eliminated qbyte type, now uses unsigned char throughout the engine for this purpose
[xonotic/darkplaces.git] / model_brush.c
index 90b16e7..8622d3d 100644 (file)
@@ -26,12 +26,9 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include "wad.h"
 
 
-// note: model_shared.c sets up r_notexture, and r_surf_notexture
-
-qbyte mod_q1bsp_novis[(MAX_MAP_LEAFS + 7)/ 8];
-
 //cvar_t r_subdivide_size = {CVAR_SAVE, "r_subdivide_size", "128"};
 cvar_t halflifebsp = {0, "halflifebsp", "0"};
+cvar_t mcbsp = {0, "mcbsp", "0"};
 cvar_t r_novis = {0, "r_novis", "0"};
 cvar_t r_miplightmaps = {CVAR_SAVE, "r_miplightmaps", "0"};
 cvar_t r_lightmaprgba = {0, "r_lightmaprgba", "1"};
@@ -48,11 +45,11 @@ cvar_t mod_q3bsp_curves_collisions = {0, "mod_q3bsp_curves_collisions", "1"};
 cvar_t mod_q3bsp_optimizedtraceline = {0, "mod_q3bsp_optimizedtraceline", "1"};
 cvar_t mod_q3bsp_debugtracebrush = {0, "mod_q3bsp_debugtracebrush", "0"};
 
-static void Mod_Q1BSP_Collision_Init (void);
 void Mod_BrushInit(void)
 {
 //     Cvar_RegisterVariable(&r_subdivide_size);
        Cvar_RegisterVariable(&halflifebsp);
+       Cvar_RegisterVariable(&mcbsp);
        Cvar_RegisterVariable(&r_novis);
        Cvar_RegisterVariable(&r_miplightmaps);
        Cvar_RegisterVariable(&r_lightmaprgba);
@@ -68,8 +65,6 @@ void Mod_BrushInit(void)
        Cvar_RegisterVariable(&mod_q3bsp_curves_collisions);
        Cvar_RegisterVariable(&mod_q3bsp_optimizedtraceline);
        Cvar_RegisterVariable(&mod_q3bsp_debugtracebrush);
-       memset(mod_q1bsp_novis, 0xff, sizeof(mod_q1bsp_novis));
-       Mod_Q1BSP_Collision_Init();
 }
 
 static mleaf_t *Mod_Q1BSP_PointInLeaf(model_t *model, const vec3_t p)
@@ -79,18 +74,16 @@ static mleaf_t *Mod_Q1BSP_PointInLeaf(model_t *model, const vec3_t p)
        if (model == NULL)
                return NULL;
 
-       Mod_CheckLoaded(model);
-
        // LordHavoc: modified to start at first clip node,
        // in other words: first node of the (sub)model
-       node = model->brushq1.nodes + model->brushq1.hulls[0].firstclipnode;
-       while (node->contents == 0)
+       node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
+       while (node->plane)
                node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
 
        return (mleaf_t *)node;
 }
 
-static void Mod_Q1BSP_AmbientSoundLevelsForPoint(model_t *model, const vec3_t p, qbyte *out, int outsize)
+static void Mod_Q1BSP_AmbientSoundLevelsForPoint(model_t *model, const vec3_t p, unsigned char *out, int outsize)
 {
        int i;
        mleaf_t *leaf;
@@ -109,17 +102,84 @@ static void Mod_Q1BSP_AmbientSoundLevelsForPoint(model_t *model, const vec3_t p,
                memset(out, 0, outsize);
 }
 
-static int Mod_Q1BSP_BoxTouchingPVS(model_t *model, const qbyte *pvs, const vec3_t mins, const vec3_t maxs)
+static int Mod_Q1BSP_FindBoxClusters(model_t *model, const vec3_t mins, const vec3_t maxs, int maxclusters, int *clusterlist)
+{
+       int numclusters = 0;
+       int nodestackindex = 0;
+       mnode_t *node, *nodestack[1024];
+       if (!model->brush.num_pvsclusters)
+               return -1;
+       node = model->brush.data_nodes;
+       for (;;)
+       {
+#if 1
+               if (node->plane)
+               {
+                       // node - recurse down the BSP tree
+                       int side = BoxOnPlaneSide(mins, maxs, node->plane) - 1;
+                       if (side < 2)
+                       {
+                               // box is on one side of plane, take that path
+                               node = node->children[side];
+                       }
+                       else
+                       {
+                               // box crosses plane, take one path and remember the other
+                               if (nodestackindex < 1024)
+                                       nodestack[nodestackindex++] = node->children[0];
+                               node = node->children[1];
+                       }
+                       continue;
+               }
+               else
+               {
+                       // leaf - add clusterindex to list
+                       if (numclusters < maxclusters)
+                               clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
+                       numclusters++;
+               }
+#else
+               if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
+               {
+                       if (node->plane)
+                       {
+                               if (nodestackindex < 1024)
+                                       nodestack[nodestackindex++] = node->children[0];
+                               node = node->children[1];
+                               continue;
+                       }
+                       else
+                       {
+                               // leaf - add clusterindex to list
+                               if (numclusters < maxclusters)
+                                       clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
+                               numclusters++;
+                       }
+               }
+#endif
+               // try another path we didn't take earlier
+               if (nodestackindex == 0)
+                       break;
+               node = nodestack[--nodestackindex];
+       }
+       // return number of clusters found (even if more than the maxclusters)
+       return numclusters;
+}
+
+static int Mod_Q1BSP_BoxTouchingPVS(model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 {
-       int clusterindex, side, nodestackindex = 0;
+       int nodestackindex = 0;
        mnode_t *node, *nodestack[1024];
-       node = model->brushq1.nodes + model->brushq1.hulls[0].firstclipnode;
+       if (!model->brush.num_pvsclusters)
+               return true;
+       node = model->brush.data_nodes;
        for (;;)
        {
+#if 1
                if (node->plane)
                {
                        // node - recurse down the BSP tree
-                       side = BoxOnPlaneSide(mins, maxs, node->plane) - 1;
+                       int side = BoxOnPlaneSide(mins, maxs, node->plane) - 1;
                        if (side < 2)
                        {
                                // box is on one side of plane, take that path
@@ -132,48 +192,184 @@ static int Mod_Q1BSP_BoxTouchingPVS(model_t *model, const qbyte *pvs, const vec3
                                        nodestack[nodestackindex++] = node->children[0];
                                node = node->children[1];
                        }
+                       continue;
                }
                else
                {
                        // leaf - check cluster bit
-                       clusterindex = ((mleaf_t *)node)->clusterindex;
+                       int clusterindex = ((mleaf_t *)node)->clusterindex;
                        if (CHECKPVSBIT(pvs, clusterindex))
                        {
                                // it is visible, return immediately with the news
                                return true;
                        }
+               }
+#else
+               if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
+               {
+                       if (node->plane)
+                       {
+                               if (nodestackindex < 1024)
+                                       nodestack[nodestackindex++] = node->children[0];
+                               node = node->children[1];
+                               continue;
+                       }
                        else
                        {
-                               // nothing to see here, try another path we didn't take earlier
-                               if (nodestackindex == 0)
-                                       break;
-                               node = nodestack[--nodestackindex];
+                               // leaf - check cluster bit
+                               int clusterindex = ((mleaf_t *)node)->clusterindex;
+                               if (CHECKPVSBIT(pvs, clusterindex))
+                               {
+                                       // it is visible, return immediately with the news
+                                       return true;
+                               }
                        }
                }
+#endif
+               // nothing to see here, try another path we didn't take earlier
+               if (nodestackindex == 0)
+                       break;
+               node = nodestack[--nodestackindex];
        }
        // it is not visible
        return false;
 }
 
-/*
-static int Mod_Q1BSP_PointContents(model_t *model, const vec3_t p)
+static int Mod_Q1BSP_BoxTouchingLeafPVS(model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 {
-       mnode_t *node;
-
-       if (model == NULL)
-               return CONTENTS_EMPTY;
-
-       Mod_CheckLoaded(model);
-
-       // LordHavoc: modified to start at first clip node,
-       // in other words: first node of the (sub)model
-       node = model->brushq1.nodes + model->brushq1.hulls[0].firstclipnode;
-       while (node->contents == 0)
-               node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
+       int nodestackindex = 0;
+       mnode_t *node, *nodestack[1024];
+       if (!model->brush.num_leafs)
+               return true;
+       node = model->brush.data_nodes;
+       for (;;)
+       {
+#if 1
+               if (node->plane)
+               {
+                       // node - recurse down the BSP tree
+                       int side = BoxOnPlaneSide(mins, maxs, node->plane) - 1;
+                       if (side < 2)
+                       {
+                               // box is on one side of plane, take that path
+                               node = node->children[side];
+                       }
+                       else
+                       {
+                               // box crosses plane, take one path and remember the other
+                               if (nodestackindex < 1024)
+                                       nodestack[nodestackindex++] = node->children[0];
+                               node = node->children[1];
+                       }
+                       continue;
+               }
+               else
+               {
+                       // leaf - check cluster bit
+                       int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
+                       if (CHECKPVSBIT(pvs, clusterindex))
+                       {
+                               // it is visible, return immediately with the news
+                               return true;
+                       }
+               }
+#else
+               if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
+               {
+                       if (node->plane)
+                       {
+                               if (nodestackindex < 1024)
+                                       nodestack[nodestackindex++] = node->children[0];
+                               node = node->children[1];
+                               continue;
+                       }
+                       else
+                       {
+                               // leaf - check cluster bit
+                               int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
+                               if (CHECKPVSBIT(pvs, clusterindex))
+                               {
+                                       // it is visible, return immediately with the news
+                                       return true;
+                               }
+                       }
+               }
+#endif
+               // nothing to see here, try another path we didn't take earlier
+               if (nodestackindex == 0)
+                       break;
+               node = nodestack[--nodestackindex];
+       }
+       // it is not visible
+       return false;
+}
 
-       return ((mleaf_t *)node)->contents;
+static int Mod_Q1BSP_BoxTouchingVisibleLeafs(model_t *model, const unsigned char *visibleleafs, const vec3_t mins, const vec3_t maxs)
+{
+       int nodestackindex = 0;
+       mnode_t *node, *nodestack[1024];
+       if (!model->brush.num_leafs)
+               return true;
+       node = model->brush.data_nodes;
+       for (;;)
+       {
+#if 1
+               if (node->plane)
+               {
+                       // node - recurse down the BSP tree
+                       int side = BoxOnPlaneSide(mins, maxs, node->plane) - 1;
+                       if (side < 2)
+                       {
+                               // box is on one side of plane, take that path
+                               node = node->children[side];
+                       }
+                       else
+                       {
+                               // box crosses plane, take one path and remember the other
+                               if (nodestackindex < 1024)
+                                       nodestack[nodestackindex++] = node->children[0];
+                               node = node->children[1];
+                       }
+                       continue;
+               }
+               else
+               {
+                       // leaf - check if it is visible
+                       if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
+                       {
+                               // it is visible, return immediately with the news
+                               return true;
+                       }
+               }
+#else
+               if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
+               {
+                       if (node->plane)
+                       {
+                               if (nodestackindex < 1024)
+                                       nodestack[nodestackindex++] = node->children[0];
+                               node = node->children[1];
+                               continue;
+                       }
+                       else
+                       {
+                               // leaf - check if it is visible
+                               if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
+                               {
+                                       // it is visible, return immediately with the news
+                                       return true;
+                               }
+                       }
+               }
+#endif
+               // nothing to see here, try another path we didn't take earlier
+               if (nodestackindex == 0)
+                       break;
+               node = nodestack[--nodestackindex];
+       }
+       // it is not visible
+       return false;
 }
-*/
 
 typedef struct findnonsolidlocationinfo_s
 {
@@ -185,43 +381,28 @@ typedef struct findnonsolidlocationinfo_s
 }
 findnonsolidlocationinfo_t;
 
-#if 0
-extern cvar_t samelevel;
-#endif
 static void Mod_Q1BSP_FindNonSolidLocation_r_Leaf(findnonsolidlocationinfo_t *info, mleaf_t *leaf)
 {
-       int i, surfnum, k, *tri, *mark;
+       int i, surfacenum, k, *tri, *mark;
        float dist, f, vert[3][3], edge[3][3], facenormal[3], edgenormal[3][3], point[3];
-#if 0
-       float surfnormal[3];
-#endif
-       msurface_t *surf;
-       for (surfnum = 0, mark = leaf->firstmarksurface;surfnum < leaf->nummarksurfaces;surfnum++, mark++)
+       msurface_t *surface;
+       for (surfacenum = 0, mark = leaf->firstleafsurface;surfacenum < leaf->numleafsurfaces;surfacenum++, mark++)
        {
-               surf = info->model->brushq1.surfaces + *mark;
-               if (surf->flags & SURF_SOLIDCLIP)
+               surface = info->model->data_surfaces + *mark;
+               if (surface->texture->supercontents & SUPERCONTENTS_SOLID)
                {
-#if 0
-                       VectorCopy(surf->plane->normal, surfnormal);
-                       if (surf->flags & SURF_PLANEBACK)
-                               VectorNegate(surfnormal, surfnormal);
-#endif
-                       for (k = 0;k < surf->mesh.num_triangles;k++)
+                       for (k = 0;k < surface->num_triangles;k++)
                        {
-                               tri = surf->mesh.data_element3i + k * 3;
-                               VectorCopy((surf->mesh.data_vertex3f + tri[0] * 3), vert[0]);
-                               VectorCopy((surf->mesh.data_vertex3f + tri[1] * 3), vert[1]);
-                               VectorCopy((surf->mesh.data_vertex3f + tri[2] * 3), vert[2]);
+                               tri = (surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle) + k * 3;
+                               VectorCopy((surface->groupmesh->data_vertex3f + tri[0] * 3), vert[0]);
+                               VectorCopy((surface->groupmesh->data_vertex3f + tri[1] * 3), vert[1]);
+                               VectorCopy((surface->groupmesh->data_vertex3f + tri[2] * 3), vert[2]);
                                VectorSubtract(vert[1], vert[0], edge[0]);
                                VectorSubtract(vert[2], vert[1], edge[1]);
                                CrossProduct(edge[1], edge[0], facenormal);
                                if (facenormal[0] || facenormal[1] || facenormal[2])
                                {
                                        VectorNormalize(facenormal);
-#if 0
-                                       if (VectorDistance(facenormal, surfnormal) > 0.01f)
-                                               Con_Printf("a2! %f %f %f != %f %f %f\n", facenormal[0], facenormal[1], facenormal[2], surfnormal[0], surfnormal[1], surfnormal[2]);
-#endif
                                        f = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
                                        if (f <= info->bestdist && f >= -info->bestdist)
                                        {
@@ -232,19 +413,6 @@ static void Mod_Q1BSP_FindNonSolidLocation_r_Leaf(findnonsolidlocationinfo_t *in
                                                CrossProduct(facenormal, edge[0], edgenormal[0]);
                                                CrossProduct(facenormal, edge[1], edgenormal[1]);
                                                CrossProduct(facenormal, edge[2], edgenormal[2]);
-#if 0
-                                               if (samelevel.integer & 1)
-                                                       VectorNegate(edgenormal[0], edgenormal[0]);
-                                               if (samelevel.integer & 2)
-                                                       VectorNegate(edgenormal[1], edgenormal[1]);
-                                               if (samelevel.integer & 4)
-                                                       VectorNegate(edgenormal[2], edgenormal[2]);
-                                               for (i = 0;i < 3;i++)
-                                                       if (DotProduct(vert[0], edgenormal[i]) > DotProduct(vert[i], edgenormal[i]) + 0.1f
-                                                        || DotProduct(vert[1], edgenormal[i]) > DotProduct(vert[i], edgenormal[i]) + 0.1f
-                                                        || DotProduct(vert[2], edgenormal[i]) > DotProduct(vert[i], edgenormal[i]) + 0.1f)
-                                                               Con_Printf("a! %i : %f %f %f (%f %f %f)\n", i, edgenormal[i][0], edgenormal[i][1], edgenormal[i][2], facenormal[0], facenormal[1], facenormal[2]);
-#endif
                                                // face distance
                                                if (DotProduct(info->center, edgenormal[0]) < DotProduct(vert[0], edgenormal[0])
                                                 && DotProduct(info->center, edgenormal[1]) < DotProduct(vert[1], edgenormal[1])
@@ -313,12 +481,7 @@ static void Mod_Q1BSP_FindNonSolidLocation_r_Leaf(findnonsolidlocationinfo_t *in
 
 static void Mod_Q1BSP_FindNonSolidLocation_r(findnonsolidlocationinfo_t *info, mnode_t *node)
 {
-       if (node->contents)
-       {
-               if (((mleaf_t *)node)->nummarksurfaces)
-                       Mod_Q1BSP_FindNonSolidLocation_r_Leaf(info, (mleaf_t *)node);
-       }
-       else
+       if (node->plane)
        {
                float f = PlaneDiff(info->center, node->plane);
                if (f >= -info->bestdist)
@@ -326,6 +489,11 @@ static void Mod_Q1BSP_FindNonSolidLocation_r(findnonsolidlocationinfo_t *info, m
                if (f <= info->bestdist)
                        Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[1]);
        }
+       else
+       {
+               if (((mleaf_t *)node)->numleafsurfaces)
+                       Mod_Q1BSP_FindNonSolidLocation_r_Leaf(info, (mleaf_t *)node);
+       }
 }
 
 static void Mod_Q1BSP_FindNonSolidLocation(model_t *model, const vec3_t in, vec3_t out, float radius)
@@ -345,7 +513,7 @@ static void Mod_Q1BSP_FindNonSolidLocation(model_t *model, const vec3_t in, vec3
        {
                VectorClear(info.nudge);
                info.bestdist = radius;
-               Mod_Q1BSP_FindNonSolidLocation_r(&info, model->brushq1.nodes + model->brushq1.hulls[0].firstclipnode);
+               Mod_Q1BSP_FindNonSolidLocation_r(&info, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode);
                VectorAdd(info.center, info.nudge, info.center);
        }
        while (info.bestdist < radius && ++i < 10);
@@ -387,7 +555,7 @@ int Mod_Q1BSP_NativeContentsFromSuperContents(model_t *model, int supercontents)
        return CONTENTS_EMPTY;
 }
 
-typedef struct
+typedef struct RecursiveHullCheckTraceInfo_s
 {
        // the hull we're tracing through
        const hull_t *hull;
@@ -597,6 +765,13 @@ static void Mod_Q1BSP_TraceBox(struct model_s *model, int frame, trace_t *trace,
        VectorSubtract(boxstartmaxs, boxstartmins, boxsize);
        if (boxsize[0] < 3)
                rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
+       else if (model->brush.ismcbsp)
+       {
+               if (boxsize[2] < 48) // pick the nearest of 40 or 56
+                       rhc.hull = &model->brushq1.hulls[2]; // 16x16x40
+               else
+                       rhc.hull = &model->brushq1.hulls[1]; // 16x16x56
+       }
        else if (model->brush.ishlbsp)
        {
                // LordHavoc: this has to have a minor tolerance (the .1) because of
@@ -635,40 +810,6 @@ static void Mod_Q1BSP_TraceBox(struct model_s *model, int frame, trace_t *trace,
 #endif
 }
 
-static hull_t box_hull;
-static dclipnode_t box_clipnodes[6];
-static mplane_t box_planes[6];
-
-static void Mod_Q1BSP_Collision_Init (void)
-{
-       int             i;
-       int             side;
-
-       //Set up the planes and clipnodes so that the six floats of a bounding box
-       //can just be stored out and get a proper hull_t structure.
-
-       box_hull.clipnodes = box_clipnodes;
-       box_hull.planes = box_planes;
-       box_hull.firstclipnode = 0;
-       box_hull.lastclipnode = 5;
-
-       for (i = 0;i < 6;i++)
-       {
-               box_clipnodes[i].planenum = i;
-
-               side = i&1;
-
-               box_clipnodes[i].children[side] = CONTENTS_EMPTY;
-               if (i != 5)
-                       box_clipnodes[i].children[side^1] = i + 1;
-               else
-                       box_clipnodes[i].children[side^1] = CONTENTS_SOLID;
-
-               box_planes[i].type = i>>1;
-               box_planes[i].normal[i>>1] = 1;
-       }
-}
-
 void Collision_ClipTrace_Box(trace_t *trace, const vec3_t cmins, const vec3_t cmaxs, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitsupercontentsmask, int boxsupercontents)
 {
 #if 1
@@ -701,6 +842,9 @@ void Collision_ClipTrace_Box(trace_t *trace, const vec3_t cmins, const vec3_t cm
        Collision_TraceLineBrushFloat(trace, start, end, &cbox, &cbox);
 #else
        RecursiveHullCheckTraceInfo_t rhc;
+       static hull_t box_hull;
+       static dclipnode_t box_clipnodes[6];
+       static mplane_t box_planes[6];
        // fill in a default trace
        memset(&rhc, 0, sizeof(rhc));
        memset(trace, 0, sizeof(trace_t));
@@ -716,6 +860,36 @@ void Collision_ClipTrace_Box(trace_t *trace, const vec3_t cmins, const vec3_t cm
 #if COLLISIONPARANOID >= 3
        Con_Printf("box_planes %f:%f %f:%f %f:%f\ncbox %f %f %f:%f %f %f\nbox %f %f %f:%f %f %f\n", box_planes[0].dist, box_planes[1].dist, box_planes[2].dist, box_planes[3].dist, box_planes[4].dist, box_planes[5].dist, cmins[0], cmins[1], cmins[2], cmaxs[0], cmaxs[1], cmaxs[2], mins[0], mins[1], mins[2], maxs[0], maxs[1], maxs[2]);
 #endif
+
+       if (box_hull.clipnodes == NULL)
+       {
+               int i, side;
+
+               //Set up the planes and clipnodes so that the six floats of a bounding box
+               //can just be stored out and get a proper hull_t structure.
+
+               box_hull.clipnodes = box_clipnodes;
+               box_hull.planes = box_planes;
+               box_hull.firstclipnode = 0;
+               box_hull.lastclipnode = 5;
+
+               for (i = 0;i < 6;i++)
+               {
+                       box_clipnodes[i].planenum = i;
+
+                       side = i&1;
+
+                       box_clipnodes[i].children[side] = CONTENTS_EMPTY;
+                       if (i != 5)
+                               box_clipnodes[i].children[side^1] = i + 1;
+                       else
+                               box_clipnodes[i].children[side^1] = CONTENTS_SOLID;
+
+                       box_planes[i].type = i>>1;
+                       box_planes[i].normal[i>>1] = 1;
+               }
+       }
+
        // trace a line through the generated clipping hull
        //rhc.boxsupercontents = boxsupercontents;
        rhc.hull = &box_hull;
@@ -734,14 +908,14 @@ void Collision_ClipTrace_Box(trace_t *trace, const vec3_t cmins, const vec3_t cm
 #endif
 }
 
-static int Mod_Q1BSP_LightPoint_RecursiveBSPNode(vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal, const mnode_t *node, float x, float y, float startz, float endz)
+static int Mod_Q1BSP_LightPoint_RecursiveBSPNode(model_t *model, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal, const mnode_t *node, float x, float y, float startz, float endz)
 {
        int side, distz = endz - startz;
        float front, back;
        float mid;
 
 loc0:
-       if (node->contents < 0)
+       if (!node->plane)
                return false;           // didn't hit anything
 
        switch (node->plane->type)
@@ -778,7 +952,7 @@ loc0:
        }
 
        // go down front side
-       if (node->children[side]->contents >= 0 && Mod_Q1BSP_LightPoint_RecursiveBSPNode(ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
+       if (node->children[side]->plane && Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
                return true;    // hit something
        else
        {
@@ -786,31 +960,31 @@ loc0:
                if (node->numsurfaces)
                {
                        int i, ds, dt;
-                       msurface_t *surf;
+                       msurface_t *surface;
 
-                       surf = cl.worldmodel->brushq1.surfaces + node->firstsurface;
-                       for (i = 0;i < node->numsurfaces;i++, surf++)
+                       surface = model->data_surfaces + node->firstsurface;
+                       for (i = 0;i < node->numsurfaces;i++, surface++)
                        {
-                               if (!(surf->flags & SURF_LIGHTMAP) || !surf->samples)
+                               if (!(surface->texture->basematerialflags & MATERIALFLAG_WALL) || !surface->lightmapinfo->samples)
                                        continue;       // no lightmaps
 
-                               ds = (int) (x * surf->texinfo->vecs[0][0] + y * surf->texinfo->vecs[0][1] + mid * surf->texinfo->vecs[0][2] + surf->texinfo->vecs[0][3]) - surf->texturemins[0];
-                               dt = (int) (x * surf->texinfo->vecs[1][0] + y * surf->texinfo->vecs[1][1] + mid * surf->texinfo->vecs[1][2] + surf->texinfo->vecs[1][3]) - surf->texturemins[1];
+                               ds = (int) (x * surface->lightmapinfo->texinfo->vecs[0][0] + y * surface->lightmapinfo->texinfo->vecs[0][1] + mid * surface->lightmapinfo->texinfo->vecs[0][2] + surface->lightmapinfo->texinfo->vecs[0][3]) - surface->lightmapinfo->texturemins[0];
+                               dt = (int) (x * surface->lightmapinfo->texinfo->vecs[1][0] + y * surface->lightmapinfo->texinfo->vecs[1][1] + mid * surface->lightmapinfo->texinfo->vecs[1][2] + surface->lightmapinfo->texinfo->vecs[1][3]) - surface->lightmapinfo->texturemins[1];
 
-                               if (ds >= 0 && ds < surf->extents[0] && dt >= 0 && dt < surf->extents[1])
+                               if (ds >= 0 && ds < surface->lightmapinfo->extents[0] && dt >= 0 && dt < surface->lightmapinfo->extents[1])
                                {
-                                       qbyte *lightmap;
+                                       unsigned char *lightmap;
                                        int lmwidth, lmheight, maps, line3, size3, dsfrac = ds & 15, dtfrac = dt & 15, scale = 0, r00 = 0, g00 = 0, b00 = 0, r01 = 0, g01 = 0, b01 = 0, r10 = 0, g10 = 0, b10 = 0, r11 = 0, g11 = 0, b11 = 0;
-                                       lmwidth = ((surf->extents[0]>>4)+1);
-                                       lmheight = ((surf->extents[1]>>4)+1);
+                                       lmwidth = ((surface->lightmapinfo->extents[0]>>4)+1);
+                                       lmheight = ((surface->lightmapinfo->extents[1]>>4)+1);
                                        line3 = lmwidth * 3; // LordHavoc: *3 for colored lighting
                                        size3 = lmwidth * lmheight * 3; // LordHavoc: *3 for colored lighting
 
-                                       lightmap = surf->samples + ((dt>>4) * lmwidth + (ds>>4))*3; // LordHavoc: *3 for colored lighting
+                                       lightmap = surface->lightmapinfo->samples + ((dt>>4) * lmwidth + (ds>>4))*3; // LordHavoc: *3 for colored lighting
 
-                                       for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++)
+                                       for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++)
                                        {
-                                               scale = d_lightstylevalue[surf->styles[maps]];
+                                               scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]];
                                                r00 += lightmap[      0] * scale;g00 += lightmap[      1] * scale;b00 += lightmap[      2] * scale;
                                                r01 += lightmap[      3] * scale;g01 += lightmap[      4] * scale;b01 += lightmap[      5] * scale;
                                                r10 += lightmap[line3+0] * scale;g10 += lightmap[line3+1] * scale;b10 += lightmap[line3+2] * scale;
@@ -869,18 +1043,18 @@ middle sample (the one which was requested)
 
 void Mod_Q1BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
 {
-       Mod_Q1BSP_LightPoint_RecursiveBSPNode(ambientcolor, diffusecolor, diffusenormal, cl.worldmodel->brushq1.nodes + cl.worldmodel->brushq1.hulls[0].firstclipnode, p[0], p[1], p[2], p[2] - 65536);
+       Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, p[0], p[1], p[2], p[2] - 65536);
 }
 
-static void Mod_Q1BSP_DecompressVis(const qbyte *in, const qbyte *inend, qbyte *out, qbyte *outend)
+static void Mod_Q1BSP_DecompressVis(const unsigned char *in, const unsigned char *inend, unsigned char *out, unsigned char *outend)
 {
        int c;
-       qbyte *outstart = out;
+       unsigned char *outstart = out;
        while (out < outend)
        {
                if (in == inend)
                {
-                       Con_DPrintf("Mod_Q1BSP_DecompressVis: input underrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, out - outstart, outend - outstart);
+                       Con_Printf("Mod_Q1BSP_DecompressVis: input underrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, out - outstart, outend - outstart);
                        return;
                }
                c = *in++;
@@ -890,14 +1064,14 @@ static void Mod_Q1BSP_DecompressVis(const qbyte *in, const qbyte *inend, qbyte *
                {
                        if (in == inend)
                        {
-                               Con_DPrintf("Mod_Q1BSP_DecompressVis: input underrun (during zero-run) on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, out - outstart, outend - outstart);
+                               Con_Printf("Mod_Q1BSP_DecompressVis: input underrun (during zero-run) on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, out - outstart, outend - outstart);
                                return;
                        }
                        for (c = *in++;c > 0;c--)
                        {
                                if (out == outend)
                                {
-                                       Con_DPrintf("Mod_Q1BSP_DecompressVis: output overrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, out - outstart, outend - outstart);
+                                       Con_Printf("Mod_Q1BSP_DecompressVis: output overrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, out - outstart, outend - outstart);
                                        return;
                                }
                                *out++ = 0;
@@ -913,7 +1087,7 @@ R_Q1BSP_LoadSplitSky
 A sky texture is 256*128, with the right side being a masked overlay
 ==============
 */
-void R_Q1BSP_LoadSplitSky (qbyte *src, int width, int height, int bytesperpixel)
+void R_Q1BSP_LoadSplitSky (unsigned char *src, int width, int height, int bytesperpixel)
 {
        int i, j;
        unsigned solidpixels[128*128], alphapixels[128*128];
@@ -973,8 +1147,8 @@ void R_Q1BSP_LoadSplitSky (qbyte *src, int width, int height, int bytesperpixel)
                }
        }
 
-       loadmodel->brush.solidskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_solidtexture", 128, 128, (qbyte *) solidpixels, TEXTYPE_RGBA, TEXF_PRECACHE, NULL);
-       loadmodel->brush.alphaskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_alphatexture", 128, 128, (qbyte *) alphapixels, TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
+       loadmodel->brush.solidskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_solidtexture", 128, 128, (unsigned char *) solidpixels, TEXTYPE_RGBA, TEXF_PRECACHE, NULL);
+       loadmodel->brush.alphaskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_alphatexture", 128, 128, (unsigned char *) alphapixels, TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
 }
 
 static void Mod_Q1BSP_LoadTextures(lump_t *l)
@@ -983,38 +1157,44 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
        miptex_t *dmiptex;
        texture_t *tx, *tx2, *anims[10], *altanims[10];
        dmiptexlump_t *m;
-       qbyte *data, *mtdata;
+       unsigned char *data, *mtdata;
        char name[256];
 
-       loadmodel->brushq1.textures = NULL;
+       loadmodel->data_textures = NULL;
 
        // add two slots for notexture walls and notexture liquids
        if (l->filelen)
        {
                m = (dmiptexlump_t *)(mod_base + l->fileofs);
                m->nummiptex = LittleLong (m->nummiptex);
-               loadmodel->brushq1.numtextures = m->nummiptex + 2;
+               loadmodel->num_textures = m->nummiptex + 2;
        }
        else
        {
                m = NULL;
-               loadmodel->brushq1.numtextures = 2;
+               loadmodel->num_textures = 2;
        }
 
-       loadmodel->brushq1.textures = Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numtextures * sizeof(texture_t));
+       loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_textures * sizeof(texture_t));
 
        // fill out all slots with notexture
-       for (i = 0, tx = loadmodel->brushq1.textures;i < loadmodel->brushq1.numtextures;i++, tx++)
+       for (i = 0, tx = loadmodel->data_textures;i < loadmodel->num_textures;i++, tx++)
        {
-               tx->number = i;
                strcpy(tx->name, "NO TEXTURE FOUND");
                tx->width = 16;
                tx->height = 16;
-               tx->skin.base = r_notexture;
-               if (i == loadmodel->brushq1.numtextures - 1)
-                       tx->flags = SURF_DRAWTURB | SURF_LIGHTBOTHSIDES;
+               tx->skin.base = r_texture_notexture;
+               tx->basematerialflags = 0;
+               if (i == loadmodel->num_textures - 1)
+               {
+                       tx->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES;
+                       tx->supercontents = SUPERCONTENTS_WATER;
+               }
                else
-                       tx->flags = SURF_LIGHTMAP | SURF_SOLIDCLIP;
+               {
+                       tx->basematerialflags |= MATERIALFLAG_WALL;
+                       tx->supercontents = SUPERCONTENTS_SOLID;
+               }
                tx->currentframe = tx;
        }
 
@@ -1029,7 +1209,7 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
                dofs[i] = LittleLong(dofs[i]);
                if (dofs[i] == -1 || r_nosurftextures.integer)
                        continue;
-               dmiptex = (miptex_t *)((qbyte *)m + dofs[i]);
+               dmiptex = (miptex_t *)((unsigned char *)m + dofs[i]);
 
                // make sure name is no more than 15 characters
                for (j = 0;dmiptex->name[j] && j < 15;j++)
@@ -1048,7 +1228,7 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
                                Con_Printf("Texture \"%s\" in \"%s\"is corrupt or incomplete\n", dmiptex->name, loadmodel->name);
                                continue;
                        }
-                       mtdata = (qbyte *)dmiptex + j;
+                       mtdata = (unsigned char *)dmiptex + j;
                }
 
                if ((mtwidth & 15) || (mtheight & 15))
@@ -1059,7 +1239,7 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
                        if (name[j] >= 'A' && name[j] <= 'Z')
                                name[j] += 'a' - 'A';
 
-               tx = loadmodel->brushq1.textures + i;
+               tx = loadmodel->data_textures + i;
                strcpy(tx->name, name);
                tx->width = mtwidth;
                tx->height = mtheight;
@@ -1087,13 +1267,13 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
                }
                else
                {
-                       if (!Mod_LoadSkinFrame(&tx->skin, tx->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, true, true))
+                       if (!Mod_LoadSkinFrame(&tx->skin, tx->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, true))
                        {
                                // did not find external texture, load it from the bsp or wad3
                                if (loadmodel->brush.ishlbsp)
                                {
                                        // internal texture overrides wad
-                                       qbyte *pixels, *freepixels, *fogpixels;
+                                       unsigned char *pixels, *freepixels, *fogpixels;
                                        pixels = freepixels = NULL;
                                        if (mtdata)
                                                pixels = W_ConvertWAD3Texture(dmiptex);
@@ -1106,7 +1286,7 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
                                                tx->skin.base = tx->skin.merged = R_LoadTexture2D(loadmodel->texturepool, tx->name, image_width, image_height, pixels, TEXTYPE_RGBA, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, NULL);
                                                if (Image_CheckAlpha(pixels, image_width * image_height, true))
                                                {
-                                                       fogpixels = Mem_Alloc(tempmempool, image_width * image_height * 4);
+                                                       fogpixels = (unsigned char *)Mem_Alloc(tempmempool, image_width * image_height * 4);
                                                        for (j = 0;j < image_width * image_height * 4;j += 4)
                                                        {
                                                                fogpixels[j + 0] = 255;
@@ -1122,7 +1302,7 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
                                                Mem_Free(freepixels);
                                }
                                else if (mtdata) // texture included
-                                       Mod_LoadSkinFrame_Internal(&tx->skin, tx->name, TEXF_MIPMAP | TEXF_PRECACHE | TEXF_PICMIP, false, true, tx->name[0] != '*' && r_fullbrights.integer, mtdata, tx->width, tx->height);
+                                       Mod_LoadSkinFrame_Internal(&tx->skin, tx->name, TEXF_MIPMAP | TEXF_PRECACHE | TEXF_PICMIP, false, tx->name[0] != '*' && r_fullbrights.integer, mtdata, tx->width, tx->height);
                        }
                }
                if (tx->skin.base == NULL)
@@ -1130,25 +1310,40 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
                        // no texture found
                        tx->width = 16;
                        tx->height = 16;
-                       tx->skin.base = r_notexture;
+                       tx->skin.base = r_texture_notexture;
                }
 
+               tx->basematerialflags = 0;
                if (tx->name[0] == '*')
                {
                        // turb does not block movement
-                       tx->flags = SURF_DRAWTURB | SURF_LIGHTBOTHSIDES;
+                       tx->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES;
                        // LordHavoc: some turbulent textures should be fullbright and solid
                        if (!strncmp(tx->name,"*lava",5)
                         || !strncmp(tx->name,"*teleport",9)
                         || !strncmp(tx->name,"*rift",5)) // Scourge of Armagon texture
-                               tx->flags |= SURF_DRAWFULLBRIGHT | SURF_DRAWNOALPHA;
+                               tx->basematerialflags |= MATERIALFLAG_FULLBRIGHT;
+                       else
+                               tx->basematerialflags |= MATERIALFLAG_WATERALPHA;
+                       if (!strncmp(tx->name, "*lava", 5))
+                               tx->supercontents = SUPERCONTENTS_LAVA;
+                       else if (!strncmp(tx->name, "*slime", 6))
+                               tx->supercontents = SUPERCONTENTS_SLIME;
                        else
-                               tx->flags |= SURF_WATERALPHA;
+                               tx->supercontents = SUPERCONTENTS_WATER;
                }
                else if (tx->name[0] == 's' && tx->name[1] == 'k' && tx->name[2] == 'y')
-                       tx->flags = SURF_DRAWSKY | SURF_SOLIDCLIP;
+               {
+                       tx->supercontents = SUPERCONTENTS_SKY;
+                       tx->basematerialflags |= MATERIALFLAG_SKY;
+               }
                else
-                       tx->flags = SURF_LIGHTMAP | SURF_SOLIDCLIP;
+               {
+                       tx->supercontents = SUPERCONTENTS_SOLID;
+                       tx->basematerialflags |= MATERIALFLAG_WALL;
+               }
+               if (tx->skin.fog)
+                       tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_TRANSPARENT;
 
                // start out with no animation
                tx->currentframe = tx;
@@ -1157,7 +1352,7 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
        // sequence the animations
        for (i = 0;i < m->nummiptex;i++)
        {
-               tx = loadmodel->brushq1.textures + i;
+               tx = loadmodel->data_textures + i;
                if (!tx || tx->name[0] != '+' || tx->name[1] == 0 || tx->name[2] == 0)
                        continue;
                if (tx->anim_total[0] || tx->anim_total[1])
@@ -1169,7 +1364,7 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
 
                for (j = i;j < m->nummiptex;j++)
                {
-                       tx2 = loadmodel->brushq1.textures + j;
+                       tx2 = loadmodel->data_textures + j;
                        if (!tx2 || tx2->name[0] != '+' || strcmp(tx2->name+2, tx->name+2))
                                continue;
 
@@ -1259,31 +1454,36 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
 static void Mod_Q1BSP_LoadLighting(lump_t *l)
 {
        int i;
-       qbyte *in, *out, *data, d;
+       unsigned char *in, *out, *data, d;
        char litfilename[1024];
        loadmodel->brushq1.lightdata = NULL;
        if (loadmodel->brush.ishlbsp) // LordHavoc: load the colored lighting data straight
        {
-               loadmodel->brushq1.lightdata = Mem_Alloc(loadmodel->mempool, l->filelen);
+               loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
                for (i=0; i<l->filelen; i++)
                        loadmodel->brushq1.lightdata[i] = mod_base[l->fileofs+i] >>= 1;
        }
+       else if (loadmodel->brush.ismcbsp)
+       {
+               loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
+               memcpy(loadmodel->brushq1.lightdata, mod_base + l->fileofs, l->filelen);
+       }
        else // LordHavoc: bsp version 29 (normal white lighting)
        {
                // LordHavoc: hope is not lost yet, check for a .lit file to load
                strlcpy (litfilename, loadmodel->name, sizeof (litfilename));
                FS_StripExtension (litfilename, litfilename, sizeof (litfilename));
                strlcat (litfilename, ".lit", sizeof (litfilename));
-               data = (qbyte*) FS_LoadFile(litfilename, tempmempool, false);
+               data = (unsigned char*) FS_LoadFile(litfilename, tempmempool, false);
                if (data)
                {
-                       if (fs_filesize > 8 && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
+                       if (fs_filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
                        {
                                i = LittleLong(((int *)data)[1]);
                                if (i == 1)
                                {
                                        Con_DPrintf("loaded %s\n", litfilename);
-                                       loadmodel->brushq1.lightdata = Mem_Alloc(loadmodel->mempool, fs_filesize - 8);
+                                       loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, fs_filesize - 8);
                                        memcpy(loadmodel->brushq1.lightdata, data + 8, fs_filesize - 8);
                                        Mem_Free(data);
                                        return;
@@ -1299,14 +1499,14 @@ static void Mod_Q1BSP_LoadLighting(lump_t *l)
                                if (fs_filesize == 8)
                                        Con_Print("Empty .lit file, ignoring\n");
                                else
-                                       Con_Print("Corrupt .lit file (old version?), ignoring\n");
+                                       Con_Printf("Corrupt .lit file (file size %i bytes, should be %i bytes), ignoring\n", fs_filesize, 8 + l->filelen * 3);
                                Mem_Free(data);
                        }
                }
                // LordHavoc: oh well, expand the white lighting data
                if (!l->filelen)
                        return;
-               loadmodel->brushq1.lightdata = Mem_Alloc(loadmodel->mempool, l->filelen*3);
+               loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen*3);
                in = loadmodel->brushq1.lightdata + l->filelen*2; // place the file at the end, so it will not be overwritten until the very last write
                out = loadmodel->brushq1.lightdata;
                memcpy(in, mod_base + l->fileofs, l->filelen);
@@ -1323,7 +1523,7 @@ static void Mod_Q1BSP_LoadLighting(lump_t *l)
 static void Mod_Q1BSP_LoadLightList(void)
 {
        int a, n, numlights;
-       char lightsfilename[1024], *s, *t, *lightsstring;
+       char tempchar, *s, *t, *lightsstring, lightsfilename[1024];
        mlight_t *e;
 
        strlcpy (lightsfilename, loadmodel->name, sizeof (lightsfilename));
@@ -1335,46 +1535,48 @@ static void Mod_Q1BSP_LoadLightList(void)
                numlights = 0;
                while (*s)
                {
-                       while (*s && *s != '\n')
+                       while (*s && *s != '\n' && *s != '\r')
                                s++;
                        if (!*s)
                        {
                                Mem_Free(lightsstring);
-                               Host_Error("lights file must end with a newline\n");
+                               Con_Printf("lights file must end with a newline\n");
+                               return;
                        }
                        s++;
                        numlights++;
                }
-               loadmodel->brushq1.lights = Mem_Alloc(loadmodel->mempool, numlights * sizeof(mlight_t));
+               loadmodel->brushq1.lights = (mlight_t *)Mem_Alloc(loadmodel->mempool, numlights * sizeof(mlight_t));
                s = lightsstring;
                n = 0;
                while (*s && n < numlights)
                {
                        t = s;
-                       while (*s && *s != '\n')
+                       while (*s && *s != '\n' && *s != '\r')
                                s++;
                        if (!*s)
                        {
-                               Mem_Free(lightsstring);
-                               Host_Error("misparsed lights file!\n");
+                               Con_Printf("misparsed lights file!\n");
+                               break;
                        }
                        e = loadmodel->brushq1.lights + n;
+                       tempchar = *s;
                        *s = 0;
                        a = sscanf(t, "%f %f %f %f %f %f %f %f %f %f %f %f %f %d", &e->origin[0], &e->origin[1], &e->origin[2], &e->falloff, &e->light[0], &e->light[1], &e->light[2], &e->subtract, &e->spotdir[0], &e->spotdir[1], &e->spotdir[2], &e->spotcone, &e->distbias, &e->style);
-                       *s = '\n';
+                       *s = tempchar;
                        if (a != 14)
                        {
-                               Mem_Free(lightsstring);
-                               Host_Error("invalid lights file, found %d parameters on line %i, should be 14 parameters (origin[0] origin[1] origin[2] falloff light[0] light[1] light[2] subtract spotdir[0] spotdir[1] spotdir[2] spotcone distancebias style)\n", a, n + 1);
+                               Con_Printf("invalid lights file, found %d parameters on line %i, should be 14 parameters (origin[0] origin[1] origin[2] falloff light[0] light[1] light[2] subtract spotdir[0] spotdir[1] spotdir[2] spotcone distancebias style)\n", a, n + 1);
+                               break;
                        }
-                       s++;
+                       if (*s == '\r')
+                               s++;
+                       if (*s == '\n')
+                               s++;
                        n++;
                }
                if (*s)
-               {
-                       Mem_Free(lightsstring);
-                       Host_Error("misparsed lights file!\n");
-               }
+                       Con_Printf("misparsed lights file!\n");
                loadmodel->brushq1.numlights = numlights;
                Mem_Free(lightsstring);
        }
@@ -1387,7 +1589,7 @@ static void Mod_Q1BSP_LoadVisibility(lump_t *l)
        if (!l->filelen)
                return;
        loadmodel->brushq1.num_compressedpvs = l->filelen;
-       loadmodel->brushq1.data_compressedpvs = Mem_Alloc(loadmodel->mempool, l->filelen);
+       loadmodel->brushq1.data_compressedpvs = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
        memcpy(loadmodel->brushq1.data_compressedpvs, mod_base + l->fileofs, l->filelen);
 }
 
@@ -1456,7 +1658,7 @@ static void Mod_Q1BSP_LoadEntities(lump_t *l)
        loadmodel->brush.entities = NULL;
        if (!l->filelen)
                return;
-       loadmodel->brush.entities = Mem_Alloc(loadmodel->mempool, l->filelen);
+       loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
        memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
        if (loadmodel->brush.ishlbsp)
                Mod_Q1BSP_ParseWadsFromEntityLump(loadmodel->brush.entities);
@@ -1469,11 +1671,11 @@ static void Mod_Q1BSP_LoadVertexes(lump_t *l)
        mvertex_t       *out;
        int                     i, count;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (dvertex_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q1BSP_LoadVertexes: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
+       out = (mvertex_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
 
        loadmodel->brushq1.vertexes = out;
        loadmodel->brushq1.numvertexes = count;
@@ -1486,35 +1688,63 @@ static void Mod_Q1BSP_LoadVertexes(lump_t *l)
        }
 }
 
-static void Mod_Q1BSP_LoadSubmodels(lump_t *l)
+// The following two functions should be removed and MSG_* or SZ_* function sets adjusted so they
+// can be used for this
+// REMOVEME
+int SB_ReadInt (unsigned char **buffer)
+{
+       int     i;
+       i = ((*buffer)[0]) + 256*((*buffer)[1]) + 65536*((*buffer)[2]) + 16777216*((*buffer)[3]);
+       (*buffer) += 4;
+       return i;
+}
+
+// REMOVEME
+float SB_ReadFloat (unsigned char **buffer)
 {
-       dmodel_t        *in;
+       union
+       {
+               int             i;
+               float   f;
+       } u;
+
+       u.i = SB_ReadInt (buffer);
+       return u.f;
+}
+
+static void Mod_Q1BSP_LoadSubmodels(lump_t *l, hullinfo_t *hullinfo)
+{
+       unsigned char           *index;
        dmodel_t        *out;
        int                     i, j, count;
 
-       in = (void *)(mod_base + l->fileofs);
-       if (l->filelen % sizeof(*in))
-               Host_Error("Mod_Q1BSP_LoadSubmodels: funny lump size in %s",loadmodel->name);
-       count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
+       index = (unsigned char *)(mod_base + l->fileofs);
+       if (l->filelen % (48+4*hullinfo->filehulls))
+               Host_Error ("Mod_Q1BSP_LoadSubmodels: funny lump size in %s", loadmodel->name);
+
+       count = l->filelen / (48+4*hullinfo->filehulls);
+       out = (dmodel_t *)Mem_Alloc (loadmodel->mempool, count*sizeof(*out));
 
        loadmodel->brushq1.submodels = out;
        loadmodel->brush.numsubmodels = count;
 
-       for ( i=0 ; i<count ; i++, in++, out++)
-       {
-               for (j=0 ; j<3 ; j++)
-               {
-                       // spread the mins / maxs by a pixel
-                       out->mins[j] = LittleFloat(in->mins[j]) - 1;
-                       out->maxs[j] = LittleFloat(in->maxs[j]) + 1;
-                       out->origin[j] = LittleFloat(in->origin[j]);
-               }
-               for (j=0 ; j<MAX_MAP_HULLS ; j++)
-                       out->headnode[j] = LittleLong(in->headnode[j]);
-               out->visleafs = LittleLong(in->visleafs);
-               out->firstface = LittleLong(in->firstface);
-               out->numfaces = LittleLong(in->numfaces);
+       for (i = 0; i < count; i++, out++)
+       {
+       // spread out the mins / maxs by a pixel
+               out->mins[0] = SB_ReadFloat (&index) - 1;
+               out->mins[1] = SB_ReadFloat (&index) - 1;
+               out->mins[2] = SB_ReadFloat (&index) - 1;
+               out->maxs[0] = SB_ReadFloat (&index) + 1;
+               out->maxs[1] = SB_ReadFloat (&index) + 1;
+               out->maxs[2] = SB_ReadFloat (&index) + 1;
+               out->origin[0] = SB_ReadFloat (&index);
+               out->origin[1] = SB_ReadFloat (&index);
+               out->origin[2] = SB_ReadFloat (&index);
+               for (j = 0; j < hullinfo->filehulls; j++)
+                       out->headnode[j] = SB_ReadInt (&index);
+               out->visleafs = SB_ReadInt (&index);
+               out->firstface = SB_ReadInt (&index);
+               out->numfaces = SB_ReadInt (&index);
        }
 }
 
@@ -1524,11 +1754,11 @@ static void Mod_Q1BSP_LoadEdges(lump_t *l)
        medge_t *out;
        int     i, count;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (dedge_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q1BSP_LoadEdges: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+       out = (medge_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
        loadmodel->brushq1.edges = out;
        loadmodel->brushq1.numedges = count;
@@ -1546,11 +1776,11 @@ static void Mod_Q1BSP_LoadTexinfo(lump_t *l)
        mtexinfo_t *out;
        int i, j, k, count, miptex;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (texinfo_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q1BSP_LoadTexinfo: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+       out = (mtexinfo_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
        loadmodel->brushq1.texinfo = out;
        loadmodel->brushq1.numtexinfo = count;
@@ -1565,25 +1795,25 @@ static void Mod_Q1BSP_LoadTexinfo(lump_t *l)
                out->flags = LittleLong(in->flags);
 
                out->texture = NULL;
-               if (loadmodel->brushq1.textures)
+               if (loadmodel->data_textures)
                {
-                       if ((unsigned int) miptex >= (unsigned int) loadmodel->brushq1.numtextures)
-                               Con_Printf("error in model \"%s\": invalid miptex index %i(of %i)\n", loadmodel->name, miptex, loadmodel->brushq1.numtextures);
+                       if ((unsigned int) miptex >= (unsigned int) loadmodel->num_textures)
+                               Con_Printf("error in model \"%s\": invalid miptex index %i(of %i)\n", loadmodel->name, miptex, loadmodel->num_textures);
                        else
-                               out->texture = loadmodel->brushq1.textures + miptex;
+                               out->texture = loadmodel->data_textures + miptex;
                }
                if (out->flags & TEX_SPECIAL)
                {
                        // if texture chosen is NULL or the shader needs a lightmap,
                        // force to notexture water shader
-                       if (out->texture == NULL || out->texture->flags & SURF_LIGHTMAP)
-                               out->texture = loadmodel->brushq1.textures + (loadmodel->brushq1.numtextures - 1);
+                       if (out->texture == NULL || out->texture->basematerialflags & MATERIALFLAG_WALL)
+                               out->texture = loadmodel->data_textures + (loadmodel->num_textures - 1);
                }
                else
                {
                        // if texture chosen is NULL, force to notexture
                        if (out->texture == NULL)
-                               out->texture = loadmodel->brushq1.textures + (loadmodel->brushq1.numtextures - 2);
+                               out->texture = loadmodel->data_textures + (loadmodel->num_textures - 2);
                }
        }
 }
@@ -1708,7 +1938,7 @@ static void SubdividePolygon(int numverts, float *verts)
 //Breaks a polygon up along axial 64 unit
 //boundaries so that turbulent and sky warps
 //can be done reasonably.
-static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surf)
+static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surface)
 {
        int i, j;
        surfvertex_t *v;
@@ -1716,11 +1946,11 @@ static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surf)
 
        subdivpolytriangles = 0;
        subdivpolyverts = 0;
-       SubdividePolygon(surf->poly_numverts, surf->poly_verts);
+       SubdividePolygon(surface->num_vertices, (surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex));
        if (subdivpolytriangles < 1)
                Host_Error("Mod_Q1BSP_GenerateWarpMesh: no triangles?\n");
 
-       surf->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + subdivpolytriangles * sizeof(int[3]) + subdivpolyverts * sizeof(surfvertex_t));
+       surface->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + subdivpolytriangles * sizeof(int[3]) + subdivpolyverts * sizeof(surfvertex_t));
        mesh->num_vertices = subdivpolyverts;
        mesh->num_triangles = subdivpolytriangles;
        mesh->vertex = (surfvertex_t *)(mesh + 1);
@@ -1734,112 +1964,49 @@ static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surf)
        for (i = 0, v = mesh->vertex;i < subdivpolyverts;i++, v++)
        {
                VectorCopy(subdivpolyvert[i], v->v);
-               v->st[0] = DotProduct(v->v, surf->texinfo->vecs[0]);
-               v->st[1] = DotProduct(v->v, surf->texinfo->vecs[1]);
+               v->st[0] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[0]);
+               v->st[1] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[1]);
        }
 }
 #endif
 
-static surfmesh_t *Mod_Q1BSP_AllocSurfMesh(int numverts, int numtriangles)
-{
-       surfmesh_t *mesh;
-       mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + numtriangles * sizeof(int[6]) + numverts * (3 + 2 + 2 + 2 + 3 + 3 + 3 + 1) * sizeof(float));
-       mesh->num_vertices = numverts;
-       mesh->num_triangles = numtriangles;
-       mesh->data_vertex3f = (float *)(mesh + 1);
-       mesh->data_texcoordtexture2f = mesh->data_vertex3f + mesh->num_vertices * 3;
-       mesh->data_texcoordlightmap2f = mesh->data_texcoordtexture2f + mesh->num_vertices * 2;
-       mesh->data_texcoorddetail2f = mesh->data_texcoordlightmap2f + mesh->num_vertices * 2;
-       mesh->data_svector3f = (float *)(mesh->data_texcoorddetail2f + mesh->num_vertices * 2);
-       mesh->data_tvector3f = mesh->data_svector3f + mesh->num_vertices * 3;
-       mesh->data_normal3f = mesh->data_tvector3f + mesh->num_vertices * 3;
-       mesh->data_lightmapoffsets = (int *)(mesh->data_normal3f + mesh->num_vertices * 3);
-       mesh->data_element3i = mesh->data_lightmapoffsets + mesh->num_vertices;
-       mesh->data_neighbor3i = mesh->data_element3i + mesh->num_triangles * 3;
-       return mesh;
-}
-
-static void Mod_Q1BSP_GenerateSurfacePolygon(msurface_t *surf, int firstedge, int numedges)
-{
-       int i, lindex, j;
-       float *vec, *vert, mins[3], maxs[3], val, *v;
-       mtexinfo_t *tex;
-
-       // convert edges back to a normal polygon
-       surf->poly_numverts = numedges;
-       vert = surf->poly_verts = Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * numedges);
-       for (i = 0;i < numedges;i++)
-       {
-               lindex = loadmodel->brushq1.surfedges[firstedge + i];
-               if (lindex > 0)
-                       vec = loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[lindex].v[0]].position;
-               else
-                       vec = loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[-lindex].v[1]].position;
-               VectorCopy(vec, vert);
-               vert += 3;
-       }
-
-       // calculate polygon bounding box and center
-       vert = surf->poly_verts;
-       VectorCopy(vert, mins);
-       VectorCopy(vert, maxs);
-       vert += 3;
-       for (i = 1;i < surf->poly_numverts;i++, vert += 3)
-       {
-               if (mins[0] > vert[0]) mins[0] = vert[0];if (maxs[0] < vert[0]) maxs[0] = vert[0];
-               if (mins[1] > vert[1]) mins[1] = vert[1];if (maxs[1] < vert[1]) maxs[1] = vert[1];
-               if (mins[2] > vert[2]) mins[2] = vert[2];if (maxs[2] < vert[2]) maxs[2] = vert[2];
-       }
-       VectorCopy(mins, surf->poly_mins);
-       VectorCopy(maxs, surf->poly_maxs);
-       surf->poly_center[0] = (mins[0] + maxs[0]) * 0.5f;
-       surf->poly_center[1] = (mins[1] + maxs[1]) * 0.5f;
-       surf->poly_center[2] = (mins[2] + maxs[2]) * 0.5f;
-
-       // generate surface extents information
-       tex = surf->texinfo;
-       mins[0] = maxs[0] = DotProduct(surf->poly_verts, tex->vecs[0]) + tex->vecs[0][3];
-       mins[1] = maxs[1] = DotProduct(surf->poly_verts, tex->vecs[1]) + tex->vecs[1][3];
-       for (i = 1, v = surf->poly_verts + 3;i < surf->poly_numverts;i++, v += 3)
-       {
-               for (j = 0;j < 2;j++)
-               {
-                       val = DotProduct(v, tex->vecs[j]) + tex->vecs[j][3];
-                       if (mins[j] > val)
-                               mins[j] = val;
-                       if (maxs[j] < val)
-                               maxs[j] = val;
-               }
-       }
-       for (i = 0;i < 2;i++)
-       {
-               surf->texturemins[i] = (int) floor(mins[i] / 16) * 16;
-               surf->extents[i] = (int) ceil(maxs[i] / 16) * 16 - surf->texturemins[i];
-       }
-}
-
 static void Mod_Q1BSP_LoadFaces(lump_t *l)
 {
        dface_t *in;
-       msurface_t *surf;
-       int i, count, surfnum, planenum, ssize, tsize, firstedge, numedges, totalverts, totaltris, totalmeshes;
-       surfmesh_t *mesh;
-       float s, t;
+       msurface_t *surface;
+       int i, j, count, surfacenum, planenum, smax, tmax, ssize, tsize, firstedge, numedges, totalverts, totaltris;
+       float texmins[2], texmaxs[2], val;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (dface_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q1BSP_LoadFaces: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       loadmodel->brushq1.surfaces = Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
+       loadmodel->data_surfaces = (msurface_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
+       loadmodel->data_surfaces_lightmapinfo = (msurface_lightmapinfo_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_lightmapinfo_t));
 
-       loadmodel->brushq1.numsurfaces = count;
-       loadmodel->brushq1.surfacevisframes = Mem_Alloc(loadmodel->mempool, count * sizeof(int));
-       loadmodel->brushq1.surfacepvsframes = Mem_Alloc(loadmodel->mempool, count * sizeof(int));
-       loadmodel->brushq1.pvssurflist = Mem_Alloc(loadmodel->mempool, count * sizeof(int));
+       loadmodel->num_surfaces = count;
 
-       for (surfnum = 0, surf = loadmodel->brushq1.surfaces, totalverts = 0, totaltris = 0, totalmeshes = 0;surfnum < count;surfnum++, totalverts += surf->poly_numverts, totaltris += surf->poly_numverts - 2, totalmeshes++, in++, surf++)
+       totalverts = 0;
+       totaltris = 0;
+       for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs);surfacenum < count;surfacenum++, in++)
+       {
+               numedges = LittleShort(in->numedges);
+               totalverts += numedges;
+               totaltris += numedges - 2;
+       }
+
+       // TODO: split up into multiple meshes as needed to avoid exceeding 65536
+       // vertex limit
+       loadmodel->nummeshes = 1;
+       loadmodel->meshlist = (surfmesh_t **)Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t *));
+       loadmodel->meshlist[0] = Mod_AllocSurfMesh(loadmodel->mempool, totalverts, totaltris, true, false, false);
+
+       totalverts = 0;
+       totaltris = 0;
+       for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs), surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, in++, surface++)
        {
-               surf->number = surfnum;
+               surface->lightmapinfo = loadmodel->data_surfaces_lightmapinfo + surfacenum;
+
                // FIXME: validate edges, texinfo, etc?
                firstedge = LittleLong(in->firstedge);
                numedges = LittleShort(in->numedges);
@@ -1848,142 +2015,153 @@ static void Mod_Q1BSP_LoadFaces(lump_t *l)
                i = LittleShort(in->texinfo);
                if ((unsigned int) i >= (unsigned int) loadmodel->brushq1.numtexinfo)
                        Host_Error("Mod_Q1BSP_LoadFaces: invalid texinfo index %i(model has %i texinfos)\n", i, loadmodel->brushq1.numtexinfo);
-               surf->texinfo = loadmodel->brushq1.texinfo + i;
-               surf->flags = surf->texinfo->texture->flags;
+               surface->lightmapinfo->texinfo = loadmodel->brushq1.texinfo + i;
+               surface->texture = surface->lightmapinfo->texinfo->texture;
 
                planenum = LittleShort(in->planenum);
-               if ((unsigned int) planenum >= (unsigned int) loadmodel->brushq1.numplanes)
-                       Host_Error("Mod_Q1BSP_LoadFaces: invalid plane index %i (model has %i planes)\n", planenum, loadmodel->brushq1.numplanes);
-
-               if (LittleShort(in->side))
-                       surf->flags |= SURF_PLANEBACK;
-
-               surf->plane = loadmodel->brushq1.planes + planenum;
+               if ((unsigned int) planenum >= (unsigned int) loadmodel->brush.num_planes)
+                       Host_Error("Mod_Q1BSP_LoadFaces: invalid plane index %i (model has %i planes)\n", planenum, loadmodel->brush.num_planes);
+
+               //surface->flags = surface->texture->flags;
+               //if (LittleShort(in->side))
+               //      surface->flags |= SURF_PLANEBACK;
+               //surface->plane = loadmodel->brush.data_planes + planenum;
+
+               surface->groupmesh = loadmodel->meshlist[0];
+               surface->num_firstvertex = totalverts;
+               surface->num_vertices = numedges;
+               surface->num_firsttriangle = totaltris;
+               surface->num_triangles = numedges - 2;
+               totalverts += numedges;
+               totaltris += numedges - 2;
+
+               // convert edges back to a normal polygon
+               for (i = 0;i < surface->num_vertices;i++)
+               {
+                       int lindex = loadmodel->brushq1.surfedges[firstedge + i];
+                       float s, t;
+                       if (lindex > 0)
+                               VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[lindex].v[0]].position, (surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
+                       else
+                               VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[-lindex].v[1]].position, (surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
+                       s = DotProduct(((surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
+                       t = DotProduct(((surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
+                       (surface->groupmesh->data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 0] = s / surface->texture->width;
+                       (surface->groupmesh->data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 1] = t / surface->texture->height;
+                       (surface->groupmesh->data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = 0;
+                       (surface->groupmesh->data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = 0;
+                       (surface->groupmesh->data_lightmapoffsets + surface->num_firstvertex)[i] = 0;
+               }
 
-               // clear lightmap (filled in later)
-               surf->lightmaptexture = NULL;
+               for (i = 0;i < surface->num_triangles;i++)
+               {
+                       (surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 0] = 0 + surface->num_firstvertex;
+                       (surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 1] = i + 1 + surface->num_firstvertex;
+                       (surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 2] = i + 2 + surface->num_firstvertex;
+               }
 
-               // force lightmap upload on first time seeing the surface
-               surf->cached_dlight = true;
+               // compile additional data about the surface geometry
+               Mod_BuildTextureVectorsAndNormals(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, surface->groupmesh->data_vertex3f, surface->groupmesh->data_texcoordtexture2f, (surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle), surface->groupmesh->data_svector3f, surface->groupmesh->data_tvector3f, surface->groupmesh->data_normal3f, true);
+               BoxFromPoints(surface->mins, surface->maxs, surface->num_vertices, (surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex));
 
-               Mod_Q1BSP_GenerateSurfacePolygon(surf, firstedge, numedges);
+               // generate surface extents information
+               texmins[0] = texmaxs[0] = DotProduct((surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
+               texmins[1] = texmaxs[1] = DotProduct((surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
+               for (i = 1;i < surface->num_vertices;i++)
+               {
+                       for (j = 0;j < 2;j++)
+                       {
+                               val = DotProduct((surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex) + i * 3, surface->lightmapinfo->texinfo->vecs[j]) + surface->lightmapinfo->texinfo->vecs[j][3];
+                               texmins[j] = min(texmins[j], val);
+                               texmaxs[j] = max(texmaxs[j], val);
+                       }
+               }
+               for (i = 0;i < 2;i++)
+               {
+                       surface->lightmapinfo->texturemins[i] = (int) floor(texmins[i] / 16.0) * 16;
+                       surface->lightmapinfo->extents[i] = (int) ceil(texmaxs[i] / 16.0) * 16 - surface->lightmapinfo->texturemins[i];
+               }
 
-               ssize = (surf->extents[0] >> 4) + 1;
-               tsize = (surf->extents[1] >> 4) + 1;
+               smax = surface->lightmapinfo->extents[0] >> 4;
+               tmax = surface->lightmapinfo->extents[1] >> 4;
+               ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
+               tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
 
                // lighting info
                for (i = 0;i < MAXLIGHTMAPS;i++)
-                       surf->styles[i] = in->styles[i];
+                       surface->lightmapinfo->styles[i] = in->styles[i];
+               // force lightmap upload on first time seeing the surface
+               surface->cached_dlight = true;
+               surface->lightmapinfo->lightmaptexturestride = 0;
+               surface->lightmaptexture = NULL;
                i = LittleLong(in->lightofs);
                if (i == -1)
-                       surf->samples = NULL;
+               {
+                       surface->lightmapinfo->samples = NULL;
+                       // give non-lightmapped water a 1x white lightmap
+                       if ((surface->texture->basematerialflags & MATERIALFLAG_WATER) && (surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) && ssize <= 256 && tsize <= 256)
+                       {
+                               surface->lightmapinfo->samples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
+                               surface->lightmapinfo->styles[0] = 0;
+                               memset(surface->lightmapinfo->samples, 128, ssize * tsize * 3);
+                       }
+               }
                else if (loadmodel->brush.ishlbsp) // LordHavoc: HalfLife map (bsp version 30)
-                       surf->samples = loadmodel->brushq1.lightdata + i;
+                       surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + i;
                else // LordHavoc: white lighting (bsp version 29)
-                       surf->samples = loadmodel->brushq1.lightdata + (i * 3);
+                       surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + (i * 3);
 
-               if (surf->texinfo->texture->flags & SURF_LIGHTMAP)
+               if (!(surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) || surface->lightmapinfo->samples)
                {
-                       if ((surf->extents[0] >> 4) + 1 > (256) || (surf->extents[1] >> 4) + 1 > (256))
+                       int i, iu, iv;
+                       float u, v, ubase, vbase, uscale, vscale;
+
+                       if (ssize > 256 || tsize > 256)
                                Host_Error("Bad surface extents");
                        // stainmap for permanent marks on walls
-                       surf->stainsamples = Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
+                       surface->lightmapinfo->stainsamples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
                        // clear to white
-                       memset(surf->stainsamples, 255, ssize * tsize * 3);
-               }
-       }
-
-       loadmodel->brushq1.entiremesh = Mod_Q1BSP_AllocSurfMesh(totalverts, totaltris);
-
-       for (surfnum = 0, surf = loadmodel->brushq1.surfaces, totalverts = 0, totaltris = 0, totalmeshes = 0;surfnum < count;surfnum++, totalverts += surf->poly_numverts, totaltris += surf->poly_numverts - 2, totalmeshes++, surf++)
-       {
-               mesh = &surf->mesh;
-               mesh->num_vertices = surf->poly_numverts;
-               mesh->num_triangles = surf->poly_numverts - 2;
-               mesh->data_vertex3f = loadmodel->brushq1.entiremesh->data_vertex3f + totalverts * 3;
-               mesh->data_texcoordtexture2f = loadmodel->brushq1.entiremesh->data_texcoordtexture2f + totalverts * 2;
-               mesh->data_texcoordlightmap2f = loadmodel->brushq1.entiremesh->data_texcoordlightmap2f + totalverts * 2;
-               mesh->data_texcoorddetail2f = loadmodel->brushq1.entiremesh->data_texcoorddetail2f + totalverts * 2;
-               mesh->data_svector3f = loadmodel->brushq1.entiremesh->data_svector3f + totalverts * 3;
-               mesh->data_tvector3f = loadmodel->brushq1.entiremesh->data_tvector3f + totalverts * 3;
-               mesh->data_normal3f = loadmodel->brushq1.entiremesh->data_normal3f + totalverts * 3;
-               mesh->data_lightmapoffsets = loadmodel->brushq1.entiremesh->data_lightmapoffsets + totalverts;
-               mesh->data_element3i = loadmodel->brushq1.entiremesh->data_element3i + totaltris * 3;
-               mesh->data_neighbor3i = loadmodel->brushq1.entiremesh->data_neighbor3i + totaltris * 3;
-
-               surf->lightmaptexturestride = 0;
-               surf->lightmaptexture = NULL;
-
-               for (i = 0;i < mesh->num_vertices;i++)
-               {
-                       mesh->data_vertex3f[i * 3 + 0] = surf->poly_verts[i * 3 + 0];
-                       mesh->data_vertex3f[i * 3 + 1] = surf->poly_verts[i * 3 + 1];
-                       mesh->data_vertex3f[i * 3 + 2] = surf->poly_verts[i * 3 + 2];
-                       s = DotProduct((mesh->data_vertex3f + i * 3), surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3];
-                       t = DotProduct((mesh->data_vertex3f + i * 3), surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3];
-                       mesh->data_texcoordtexture2f[i * 2 + 0] = s / surf->texinfo->texture->width;
-                       mesh->data_texcoordtexture2f[i * 2 + 1] = t / surf->texinfo->texture->height;
-                       mesh->data_texcoorddetail2f[i * 2 + 0] = s * (1.0f / 16.0f);
-                       mesh->data_texcoorddetail2f[i * 2 + 1] = t * (1.0f / 16.0f);
-                       mesh->data_texcoordlightmap2f[i * 2 + 0] = 0;
-                       mesh->data_texcoordlightmap2f[i * 2 + 1] = 0;
-                       mesh->data_lightmapoffsets[i] = 0;
-               }
-
-               for (i = 0;i < mesh->num_triangles;i++)
-               {
-                       mesh->data_element3i[i * 3 + 0] = 0;
-                       mesh->data_element3i[i * 3 + 1] = i + 1;
-                       mesh->data_element3i[i * 3 + 2] = i + 2;
-               }
-
-               Mod_BuildTriangleNeighbors(mesh->data_neighbor3i, mesh->data_element3i, mesh->num_triangles);
-               Mod_BuildTextureVectorsAndNormals(mesh->num_vertices, mesh->num_triangles, mesh->data_vertex3f, mesh->data_texcoordtexture2f, mesh->data_element3i, mesh->data_svector3f, mesh->data_tvector3f, mesh->data_normal3f);
-
-               if (surf->texinfo->texture->flags & SURF_LIGHTMAP)
-               {
-                       int i, iu, iv, smax, tmax;
-                       float u, v, ubase, vbase, uscale, vscale;
-
-                       smax = surf->extents[0] >> 4;
-                       tmax = surf->extents[1] >> 4;
+                       memset(surface->lightmapinfo->stainsamples, 255, ssize * tsize * 3);
 
                        if (r_miplightmaps.integer)
                        {
-                               surf->lightmaptexturestride = smax+1;
-                               surf->lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, NULL, surf->lightmaptexturestride, (surf->extents[1]>>4)+1, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_MIPMAP | TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
+                               surface->lightmapinfo->lightmaptexturestride = ssize;
+                               surface->lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, NULL, surface->lightmapinfo->lightmaptexturestride, tsize, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_MIPMAP | TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
                        }
                        else
                        {
-                               surf->lightmaptexturestride = R_CompatibleFragmentWidth(smax+1, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, 0);
-                               surf->lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, NULL, surf->lightmaptexturestride, (surf->extents[1]>>4)+1, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FRAGMENT | TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
+                               surface->lightmapinfo->lightmaptexturestride = R_CompatibleFragmentWidth(ssize, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, 0);
+                               surface->lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, NULL, surface->lightmapinfo->lightmaptexturestride, tsize, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FRAGMENT | TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
                        }
-                       R_FragmentLocation(surf->lightmaptexture, NULL, NULL, &ubase, &vbase, &uscale, &vscale);
-                       uscale = (uscale - ubase) / (smax + 1);
-                       vscale = (vscale - vbase) / (tmax + 1);
+                       R_FragmentLocation(surface->lightmaptexture, NULL, NULL, &ubase, &vbase, &uscale, &vscale);
+                       uscale = (uscale - ubase) / ssize;
+                       vscale = (vscale - vbase) / tsize;
 
-                       for (i = 0;i < mesh->num_vertices;i++)
+                       for (i = 0;i < surface->num_vertices;i++)
                        {
-                               u = ((DotProduct((mesh->data_vertex3f + i * 3), surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3]) + 8 - surf->texturemins[0]) * (1.0 / 16.0);
-                               v = ((DotProduct((mesh->data_vertex3f + i * 3), surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3]) + 8 - surf->texturemins[1]) * (1.0 / 16.0);
-                               mesh->data_texcoordlightmap2f[i * 2 + 0] = u * uscale + ubase;
-                               mesh->data_texcoordlightmap2f[i * 2 + 1] = v * vscale + vbase;
+                               u = ((DotProduct(((surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3]) + 8 - surface->lightmapinfo->texturemins[0]) * (1.0 / 16.0);
+                               v = ((DotProduct(((surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3]) + 8 - surface->lightmapinfo->texturemins[1]) * (1.0 / 16.0);
+                               (surface->groupmesh->data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = u * uscale + ubase;
+                               (surface->groupmesh->data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = v * vscale + vbase;
                                // LordHavoc: calc lightmap data offset for vertex lighting to use
                                iu = (int) u;
                                iv = (int) v;
-                               mesh->data_lightmapoffsets[i] = (bound(0, iv, tmax) * (smax+1) + bound(0, iu, smax)) * 3;
+                               (surface->groupmesh->data_lightmapoffsets + surface->num_firstvertex)[i] = (bound(0, iv, tmax) * ssize + bound(0, iu, smax)) * 3;
                        }
                }
        }
 }
 
-static void Mod_Q1BSP_SetParent(mnode_t *node, mnode_t *parent)
+static void Mod_Q1BSP_LoadNodes_RecursiveSetParent(mnode_t *node, mnode_t *parent)
 {
+       //if (node->parent)
+       //      Host_Error("Mod_Q1BSP_LoadNodes_RecursiveSetParent: runaway recursion\n");
        node->parent = parent;
-       if (node->contents < 0)
-               return;
-       Mod_Q1BSP_SetParent(node->children[0], node);
-       Mod_Q1BSP_SetParent(node->children[1], node);
+       if (node->plane)
+       {
+               Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[0], node);
+               Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[1], node);
+       }
 }
 
 static void Mod_Q1BSP_LoadNodes(lump_t *l)
@@ -1992,14 +2170,14 @@ static void Mod_Q1BSP_LoadNodes(lump_t *l)
        dnode_t         *in;
        mnode_t         *out;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (dnode_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q1BSP_LoadNodes: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
+       out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
 
-       loadmodel->brushq1.nodes = out;
-       loadmodel->brushq1.numnodes = count;
+       loadmodel->brush.data_nodes = out;
+       loadmodel->brush.num_nodes = count;
 
        for ( i=0 ; i<count ; i++, in++, out++)
        {
@@ -2010,7 +2188,7 @@ static void Mod_Q1BSP_LoadNodes(lump_t *l)
                }
 
                p = LittleLong(in->planenum);
-               out->plane = loadmodel->brushq1.planes + p;
+               out->plane = loadmodel->brush.data_planes + p;
 
                out->firstsurface = LittleShort(in->firstface);
                out->numsurfaces = LittleShort(in->numfaces);
@@ -2019,13 +2197,13 @@ static void Mod_Q1BSP_LoadNodes(lump_t *l)
                {
                        p = LittleShort(in->children[j]);
                        if (p >= 0)
-                               out->children[j] = loadmodel->brushq1.nodes + p;
+                               out->children[j] = loadmodel->brush.data_nodes + p;
                        else
-                               out->children[j] = (mnode_t *)(loadmodel->brushq1.data_leafs + (-1 - p));
+                               out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + (-1 - p));
                }
        }
 
-       Mod_Q1BSP_SetParent(loadmodel->brushq1.nodes, NULL);    // sets nodes and leafs
+       Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);      // sets nodes and leafs
 }
 
 static void Mod_Q1BSP_LoadLeafs(lump_t *l)
@@ -2034,18 +2212,18 @@ static void Mod_Q1BSP_LoadLeafs(lump_t *l)
        mleaf_t *out;
        int i, j, count, p;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (dleaf_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q1BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
+       out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
 
-       loadmodel->brushq1.data_leafs = out;
-       loadmodel->brushq1.num_leafs = count;
+       loadmodel->brush.data_leafs = out;
+       loadmodel->brush.num_leafs = count;
        // get visleafs from the submodel data
        loadmodel->brush.num_pvsclusters = loadmodel->brushq1.submodels[0].visleafs;
        loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters+7)>>3;
-       loadmodel->brush.data_pvsclusters = Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
+       loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
        memset(loadmodel->brush.data_pvsclusters, 0xFF, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
 
        for ( i=0 ; i<count ; i++, in++, out++)
@@ -2060,13 +2238,13 @@ static void Mod_Q1BSP_LoadLeafs(lump_t *l)
 
                out->contents = LittleLong(in->contents);
 
-               out->firstmarksurface = loadmodel->brushq1.marksurfaces + LittleShort(in->firstmarksurface);
-               out->nummarksurfaces = LittleShort(in->nummarksurfaces);
-               if (out->firstmarksurface < 0 || LittleShort(in->firstmarksurface) + out->nummarksurfaces > loadmodel->brushq1.nummarksurfaces)
+               out->firstleafsurface = loadmodel->brush.data_leafsurfaces + LittleShort(in->firstmarksurface);
+               out->numleafsurfaces = LittleShort(in->nummarksurfaces);
+               if (out->firstleafsurface < 0 || LittleShort(in->firstmarksurface) + out->numleafsurfaces > loadmodel->brush.num_leafsurfaces)
                {
-                       Con_Printf("Mod_Q1BSP_LoadLeafs: invalid marksurface range %i:%i outside range %i:%i\n", out->firstmarksurface, out->firstmarksurface + out->nummarksurfaces, 0, loadmodel->brushq1.nummarksurfaces);
-                       out->firstmarksurface = NULL;
-                       out->nummarksurfaces = 0;
+                       Con_Printf("Mod_Q1BSP_LoadLeafs: invalid leafsurface range %i:%i outside range %i:%i\n", out->firstleafsurface, out->firstleafsurface + out->numleafsurfaces, 0, loadmodel->brush.num_leafsurfaces);
+                       out->firstleafsurface = NULL;
+                       out->numleafsurfaces = 0;
                }
 
                out->clusterindex = i - 1;
@@ -2090,88 +2268,34 @@ static void Mod_Q1BSP_LoadLeafs(lump_t *l)
        }
 }
 
-static void Mod_Q1BSP_LoadClipnodes(lump_t *l)
+static void Mod_Q1BSP_LoadClipnodes(lump_t *l, hullinfo_t *hullinfo)
 {
        dclipnode_t *in, *out;
        int                     i, count;
        hull_t          *hull;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (dclipnode_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q1BSP_LoadClipnodes: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
+       out = (dclipnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
 
        loadmodel->brushq1.clipnodes = out;
        loadmodel->brushq1.numclipnodes = count;
 
-       if (loadmodel->brush.ishlbsp)
+       for (i = 1; i < hullinfo->numhulls; i++)
        {
-               hull = &loadmodel->brushq1.hulls[1];
-               hull->clipnodes = out;
-               hull->firstclipnode = 0;
-               hull->lastclipnode = count-1;
-               hull->planes = loadmodel->brushq1.planes;
-               hull->clip_mins[0] = -16;
-               hull->clip_mins[1] = -16;
-               hull->clip_mins[2] = -36;
-               hull->clip_maxs[0] = 16;
-               hull->clip_maxs[1] = 16;
-               hull->clip_maxs[2] = 36;
-               VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
-
-               hull = &loadmodel->brushq1.hulls[2];
+               hull = &loadmodel->brushq1.hulls[i];
                hull->clipnodes = out;
                hull->firstclipnode = 0;
                hull->lastclipnode = count-1;
-               hull->planes = loadmodel->brushq1.planes;
-               hull->clip_mins[0] = -32;
-               hull->clip_mins[1] = -32;
-               hull->clip_mins[2] = -32;
-               hull->clip_maxs[0] = 32;
-               hull->clip_maxs[1] = 32;
-               hull->clip_maxs[2] = 32;
-               VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
-
-               hull = &loadmodel->brushq1.hulls[3];
-               hull->clipnodes = out;
-               hull->firstclipnode = 0;
-               hull->lastclipnode = count-1;
-               hull->planes = loadmodel->brushq1.planes;
-               hull->clip_mins[0] = -16;
-               hull->clip_mins[1] = -16;
-               hull->clip_mins[2] = -18;
-               hull->clip_maxs[0] = 16;
-               hull->clip_maxs[1] = 16;
-               hull->clip_maxs[2] = 18;
-               VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
-       }
-       else
-       {
-               hull = &loadmodel->brushq1.hulls[1];
-               hull->clipnodes = out;
-               hull->firstclipnode = 0;
-               hull->lastclipnode = count-1;
-               hull->planes = loadmodel->brushq1.planes;
-               hull->clip_mins[0] = -16;
-               hull->clip_mins[1] = -16;
-               hull->clip_mins[2] = -24;
-               hull->clip_maxs[0] = 16;
-               hull->clip_maxs[1] = 16;
-               hull->clip_maxs[2] = 32;
-               VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
-
-               hull = &loadmodel->brushq1.hulls[2];
-               hull->clipnodes = out;
-               hull->firstclipnode = 0;
-               hull->lastclipnode = count-1;
-               hull->planes = loadmodel->brushq1.planes;
-               hull->clip_mins[0] = -32;
-               hull->clip_mins[1] = -32;
-               hull->clip_mins[2] = -24;
-               hull->clip_maxs[0] = 32;
-               hull->clip_maxs[1] = 32;
-               hull->clip_maxs[2] = 64;
+               hull->planes = loadmodel->brush.data_planes;
+               hull->clip_mins[0] = hullinfo->hullsizes[i][0][0];
+               hull->clip_mins[1] = hullinfo->hullsizes[i][0][1];
+               hull->clip_mins[2] = hullinfo->hullsizes[i][0][2];
+               hull->clip_maxs[0] = hullinfo->hullsizes[i][1][0];
+               hull->clip_maxs[1] = hullinfo->hullsizes[i][1][1];
+               hull->clip_maxs[2] = hullinfo->hullsizes[i][1][2];
                VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
        }
 
@@ -2195,39 +2319,39 @@ static void Mod_Q1BSP_MakeHull0(void)
 
        hull = &loadmodel->brushq1.hulls[0];
 
-       in = loadmodel->brushq1.nodes;
-       out = Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numnodes * sizeof(dclipnode_t));
+       in = loadmodel->brush.data_nodes;
+       out = (dclipnode_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(dclipnode_t));
 
        hull->clipnodes = out;
        hull->firstclipnode = 0;
-       hull->lastclipnode = loadmodel->brushq1.numnodes - 1;
-       hull->planes = loadmodel->brushq1.planes;
+       hull->lastclipnode = loadmodel->brush.num_nodes - 1;
+       hull->planes = loadmodel->brush.data_planes;
 
-       for (i = 0;i < loadmodel->brushq1.numnodes;i++, out++, in++)
+       for (i = 0;i < loadmodel->brush.num_nodes;i++, out++, in++)
        {
-               out->planenum = in->plane - loadmodel->brushq1.planes;
-               out->children[0] = in->children[0]->contents < 0 ? in->children[0]->contents : in->children[0] - loadmodel->brushq1.nodes;
-               out->children[1] = in->children[1]->contents < 0 ? in->children[1]->contents : in->children[1] - loadmodel->brushq1.nodes;
+               out->planenum = in->plane - loadmodel->brush.data_planes;
+               out->children[0] = in->children[0]->plane ? in->children[0] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[0])->contents;
+               out->children[1] = in->children[1]->plane ? in->children[1] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[1])->contents;
        }
 }
 
-static void Mod_Q1BSP_LoadMarksurfaces(lump_t *l)
+static void Mod_Q1BSP_LoadLeaffaces(lump_t *l)
 {
        int i, j;
        short *in;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (short *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
-               Host_Error("Mod_Q1BSP_LoadMarksurfaces: funny lump size in %s",loadmodel->name);
-       loadmodel->brushq1.nummarksurfaces = l->filelen / sizeof(*in);
-       loadmodel->brushq1.marksurfaces = Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.nummarksurfaces * sizeof(int));
+               Host_Error("Mod_Q1BSP_LoadLeaffaces: funny lump size in %s",loadmodel->name);
+       loadmodel->brush.num_leafsurfaces = l->filelen / sizeof(*in);
+       loadmodel->brush.data_leafsurfaces = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafsurfaces * sizeof(int));
 
-       for (i = 0;i < loadmodel->brushq1.nummarksurfaces;i++)
+       for (i = 0;i < loadmodel->brush.num_leafsurfaces;i++)
        {
                j = (unsigned) LittleShort(in[i]);
-               if (j >= loadmodel->brushq1.numsurfaces)
-                       Host_Error("Mod_Q1BSP_LoadMarksurfaces: bad surface number");
-               loadmodel->brushq1.marksurfaces[i] = j;
+               if (j >= loadmodel->num_surfaces)
+                       Host_Error("Mod_Q1BSP_LoadLeaffaces: bad surface number");
+               loadmodel->brush.data_leafsurfaces[i] = j;
        }
 }
 
@@ -2236,11 +2360,11 @@ static void Mod_Q1BSP_LoadSurfedges(lump_t *l)
        int             i;
        int             *in;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (int *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q1BSP_LoadSurfedges: funny lump size in %s",loadmodel->name);
        loadmodel->brushq1.numsurfedges = l->filelen / sizeof(*in);
-       loadmodel->brushq1.surfedges = Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numsurfedges * sizeof(int));
+       loadmodel->brushq1.surfedges = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numsurfedges * sizeof(int));
 
        for (i = 0;i < loadmodel->brushq1.numsurfedges;i++)
                loadmodel->brushq1.surfedges[i] = LittleLong(in[i]);
@@ -2253,14 +2377,14 @@ static void Mod_Q1BSP_LoadPlanes(lump_t *l)
        mplane_t        *out;
        dplane_t        *in;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (dplane_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q1BSP_LoadPlanes: funny lump size in %s", loadmodel->name);
 
-       loadmodel->brushq1.numplanes = l->filelen / sizeof(*in);
-       loadmodel->brushq1.planes = out = Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numplanes * sizeof(*out));
+       loadmodel->brush.num_planes = l->filelen / sizeof(*in);
+       loadmodel->brush.data_planes = out = (mplane_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_planes * sizeof(*out));
 
-       for (i = 0;i < loadmodel->brushq1.numplanes;i++, in++, out++)
+       for (i = 0;i < loadmodel->brush.num_planes;i++, in++, out++)
        {
                out->normal[0] = LittleFloat(in->normal[0]);
                out->normal[1] = LittleFloat(in->normal[1]);
@@ -2271,6 +2395,102 @@ static void Mod_Q1BSP_LoadPlanes(lump_t *l)
        }
 }
 
+static void Mod_Q1BSP_LoadMapBrushes(void)
+{
+#if 0
+// unfinished
+       int submodel, numbrushes;
+       qboolean firstbrush;
+       char *text, *maptext;
+       char mapfilename[MAX_QPATH];
+       FS_StripExtension (loadmodel->name, mapfilename, sizeof (mapfilename));
+       strlcat (mapfilename, ".map", sizeof (mapfilename));
+       maptext = (unsigned char*) FS_LoadFile(mapfilename, tempmempool, false);
+       if (!maptext)
+               return;
+       text = maptext;
+       if (!COM_ParseToken(&data, false))
+               return; // error
+       submodel = 0;
+       for (;;)
+       {
+               if (!COM_ParseToken(&data, false))
+                       break;
+               if (com_token[0] != '{')
+                       return; // error
+               // entity
+               firstbrush = true;
+               numbrushes = 0;
+               maxbrushes = 256;
+               brushes = Mem_Alloc(loadmodel->mempool, maxbrushes * sizeof(mbrush_t));
+               for (;;)
+               {
+                       if (!COM_ParseToken(&data, false))
+                               return; // error
+                       if (com_token[0] == '}')
+                               break; // end of entity
+                       if (com_token[0] == '{')
+                       {
+                               // brush
+                               if (firstbrush)
+                               {
+                                       if (submodel)
+                                       {
+                                               if (submodel > loadmodel->brush.numsubmodels)
+                                               {
+                                                       Con_Printf("Mod_Q1BSP_LoadMapBrushes: .map has more submodels than .bsp!\n");
+                                                       model = NULL;
+                                               }
+                                               else
+                                                       model = loadmodel->brush.submodels[submodel];
+                                       }
+                                       else
+                                               model = loadmodel;
+                               }
+                               for (;;)
+                               {
+                                       if (!COM_ParseToken(&data, false))
+                                               return; // error
+                                       if (com_token[0] == '}')
+                                               break; // end of brush
+                                       // each brush face should be this format:
+                                       // ( x y z ) ( x y z ) ( x y z ) texture scroll_s scroll_t rotateangle scale_s scale_t
+                                       // FIXME: support hl .map format
+                                       for (pointnum = 0;pointnum < 3;pointnum++)
+                                       {
+                                               COM_ParseToken(&data, false);
+                                               for (componentnum = 0;componentnum < 3;componentnum++)
+                                               {
+                                                       COM_ParseToken(&data, false);
+                                                       point[pointnum][componentnum] = atof(com_token);
+                                               }
+                                               COM_ParseToken(&data, false);
+                                       }
+                                       COM_ParseToken(&data, false);
+                                       strlcpy(facetexture, com_token, sizeof(facetexture));
+                                       COM_ParseToken(&data, false);
+                                       //scroll_s = atof(com_token);
+                                       COM_ParseToken(&data, false);
+                                       //scroll_t = atof(com_token);
+                                       COM_ParseToken(&data, false);
+                                       //rotate = atof(com_token);
+                                       COM_ParseToken(&data, false);
+                                       //scale_s = atof(com_token);
+                                       COM_ParseToken(&data, false);
+                                       //scale_t = atof(com_token);
+                                       TriangleNormal(point[0], point[1], point[2], planenormal);
+                                       VectorNormalizeDouble(planenormal);
+                                       planedist = DotProduct(point[0], planenormal);
+                                       //ChooseTexturePlane(planenormal, texturevector[0], texturevector[1]);
+                               }
+                               continue;
+                       }
+               }
+       }
+#endif
+}
+
+
 #define MAX_PORTALPOINTS 64
 
 typedef struct portal_s
@@ -2294,7 +2514,7 @@ AllocPortal
 static portal_t *AllocPortal(void)
 {
        portal_t *p;
-       p = Mem_Alloc(loadmodel->mempool, sizeof(portal_t));
+       p = (portal_t *)Mem_Alloc(loadmodel->mempool, sizeof(portal_t));
        p->chain = portalchain;
        portalchain = p;
        return p;
@@ -2307,11 +2527,13 @@ static void FreePortal(portal_t *p)
 
 static void Mod_Q1BSP_RecursiveRecalcNodeBBox(mnode_t *node)
 {
+       // process only nodes (leafs already had their box calculated)
+       if (!node->plane)
+               return;
+
        // calculate children first
-       if (node->children[0]->contents >= 0)
-               Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[0]);
-       if (node->children[1]->contents >= 0)
-               Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[1]);
+       Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[0]);
+       Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[1]);
 
        // make combined bounding box from children
        node->mins[0] = min(node->children[0]->mins[0], node->children[1]->mins[0]);
@@ -2330,78 +2552,50 @@ static void Mod_Q1BSP_FinalizePortals(void)
        mvertex_t *point;
        mleaf_t *leaf, *endleaf;
 
-       // recalculate bounding boxes for all leafs(because qbsp is very sloppy)
-       leaf = loadmodel->brushq1.data_leafs;
-       endleaf = leaf + loadmodel->brushq1.num_leafs;
+       // tally up portal and point counts and recalculate bounding boxes for all
+       // leafs (because qbsp is very sloppy)
+       leaf = loadmodel->brush.data_leafs;
+       endleaf = leaf + loadmodel->brush.num_leafs;
        for (;leaf < endleaf;leaf++)
        {
                VectorSet(leaf->mins,  2000000000,  2000000000,  2000000000);
                VectorSet(leaf->maxs, -2000000000, -2000000000, -2000000000);
        }
        p = portalchain;
-       while (p)
-       {
-               if (p->numpoints >= 3)
-               {
-                       for (i = 0;i < 2;i++)
-                       {
-                               leaf = (mleaf_t *)p->nodes[i];
-                               for (j = 0;j < p->numpoints;j++)
-                               {
-                                       if (leaf->mins[0] > p->points[j*3+0]) leaf->mins[0] = p->points[j*3+0];
-                                       if (leaf->mins[1] > p->points[j*3+1]) leaf->mins[1] = p->points[j*3+1];
-                                       if (leaf->mins[2] > p->points[j*3+2]) leaf->mins[2] = p->points[j*3+2];
-                                       if (leaf->maxs[0] < p->points[j*3+0]) leaf->maxs[0] = p->points[j*3+0];
-                                       if (leaf->maxs[1] < p->points[j*3+1]) leaf->maxs[1] = p->points[j*3+1];
-                                       if (leaf->maxs[2] < p->points[j*3+2]) leaf->maxs[2] = p->points[j*3+2];
-                               }
-                       }
-               }
-               p = p->chain;
-       }
-
-       Mod_Q1BSP_RecursiveRecalcNodeBBox(loadmodel->brushq1.nodes);
-
-       // tally up portal and point counts
-       p = portalchain;
        numportals = 0;
        numpoints = 0;
        while (p)
        {
                // note: this check must match the one below or it will usually corrupt memory
                // the nodes[0] != nodes[1] check is because leaf 0 is the shared solid leaf, it can have many portals inside with leaf 0 on both sides
-               if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1]
-                && p->nodes[0]->contents != CONTENTS_SOLID && p->nodes[1]->contents != CONTENTS_SOLID
-                && p->nodes[0]->contents != CONTENTS_SKY && p->nodes[1]->contents != CONTENTS_SKY)
+               if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1] && ((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
                {
                        numportals += 2;
                        numpoints += p->numpoints * 2;
                }
                p = p->chain;
        }
-       loadmodel->brushq1.portals = Mem_Alloc(loadmodel->mempool, numportals * sizeof(mportal_t) + numpoints * sizeof(mvertex_t));
-       loadmodel->brushq1.numportals = numportals;
-       loadmodel->brushq1.portalpoints = (void *)((qbyte *) loadmodel->brushq1.portals + numportals * sizeof(mportal_t));
-       loadmodel->brushq1.numportalpoints = numpoints;
+       loadmodel->brush.data_portals = (mportal_t *)Mem_Alloc(loadmodel->mempool, numportals * sizeof(mportal_t) + numpoints * sizeof(mvertex_t));
+       loadmodel->brush.num_portals = numportals;
+       loadmodel->brush.data_portalpoints = (mvertex_t *)((unsigned char *) loadmodel->brush.data_portals + numportals * sizeof(mportal_t));
+       loadmodel->brush.num_portalpoints = numpoints;
        // clear all leaf portal chains
-       for (i = 0;i < loadmodel->brushq1.num_leafs;i++)
-               loadmodel->brushq1.data_leafs[i].portals = NULL;
+       for (i = 0;i < loadmodel->brush.num_leafs;i++)
+               loadmodel->brush.data_leafs[i].portals = NULL;
        // process all portals in the global portal chain, while freeing them
-       portal = loadmodel->brushq1.portals;
-       point = loadmodel->brushq1.portalpoints;
+       portal = loadmodel->brush.data_portals;
+       point = loadmodel->brush.data_portalpoints;
        p = portalchain;
        portalchain = NULL;
        while (p)
        {
                pnext = p->chain;
 
-               if (p->numpoints >= 3)
+               if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1])
                {
                        // note: this check must match the one above or it will usually corrupt memory
                        // the nodes[0] != nodes[1] check is because leaf 0 is the shared solid leaf, it can have many portals inside with leaf 0 on both sides
-                       if (p->nodes[0] != p->nodes[1]
-                        && p->nodes[0]->contents != CONTENTS_SOLID && p->nodes[1]->contents != CONTENTS_SOLID
-                        && p->nodes[0]->contents != CONTENTS_SKY && p->nodes[1]->contents != CONTENTS_SKY)
+                       if (((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
                        {
                                // first make the back to front portal(forward portal)
                                portal->points = point;
@@ -2416,6 +2610,7 @@ static void Mod_Q1BSP_FinalizePortals(void)
                                        VectorCopy(p->points + j*3, point->position);
                                        point++;
                                }
+                               BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
                                PlaneClassify(&portal->plane);
 
                                // link into leaf's portal chain
@@ -2438,6 +2633,7 @@ static void Mod_Q1BSP_FinalizePortals(void)
                                        VectorCopy(p->points + j*3, point->position);
                                        point++;
                                }
+                               BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
                                PlaneClassify(&portal->plane);
 
                                // link into leaf's portal chain
@@ -2447,10 +2643,26 @@ static void Mod_Q1BSP_FinalizePortals(void)
                                // advance to next portal
                                portal++;
                        }
+                       // add the portal's polygon points to the leaf bounding boxes
+                       for (i = 0;i < 2;i++)
+                       {
+                               leaf = (mleaf_t *)p->nodes[i];
+                               for (j = 0;j < p->numpoints;j++)
+                               {
+                                       if (leaf->mins[0] > p->points[j*3+0]) leaf->mins[0] = p->points[j*3+0];
+                                       if (leaf->mins[1] > p->points[j*3+1]) leaf->mins[1] = p->points[j*3+1];
+                                       if (leaf->mins[2] > p->points[j*3+2]) leaf->mins[2] = p->points[j*3+2];
+                                       if (leaf->maxs[0] < p->points[j*3+0]) leaf->maxs[0] = p->points[j*3+0];
+                                       if (leaf->maxs[1] < p->points[j*3+1]) leaf->maxs[1] = p->points[j*3+1];
+                                       if (leaf->maxs[2] < p->points[j*3+2]) leaf->maxs[2] = p->points[j*3+2];
+                               }
+                       }
                }
                FreePortal(p);
                p = pnext;
        }
+       // now recalculate the node bounding boxes from the leafs
+       Mod_Q1BSP_RecursiveRecalcNodeBBox(loadmodel->brush.data_nodes);
 }
 
 /*
@@ -2495,7 +2707,7 @@ static void RemovePortalFromNodes(portal_t *portal)
                portalpointer = (void **) &node->portals;
                while (1)
                {
-                       t = *portalpointer;
+                       t = (portal_t *)*portalpointer;
                        if (!t)
                                Host_Error("RemovePortalFromNodes: portal not in leaf");
 
@@ -2536,7 +2748,7 @@ static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
        double frontpoints[3*MAX_PORTALPOINTS], backpoints[3*MAX_PORTALPOINTS];
 
        // if a leaf, we're done
-       if (node->contents)
+       if (!node->plane)
                return;
 
        plane = node->plane;
@@ -2587,69 +2799,69 @@ static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
                Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal has too many points\n");
                nodeportal->numpoints = 0;
        }
-       else
-       {
-               AddPortalToNodes(nodeportal, front, back);
 
-               // split the portals of this node along this node's plane and assign them to the children of this node
-               // (migrating the portals downward through the tree)
-               for (portal = (portal_t *)node->portals;portal;portal = nextportal)
-               {
-                       if (portal->nodes[0] == portal->nodes[1])
-                               Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(2)");
-                       if (portal->nodes[0] == node)
-                               side = 0;
-                       else if (portal->nodes[1] == node)
-                               side = 1;
-                       else
-                               Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
-                       nextportal = portal->next[side];
-
-                       other_node = portal->nodes[!side];
-                       RemovePortalFromNodes(portal);
+       AddPortalToNodes(nodeportal, front, back);
 
-                       // cut the portal into two portals, one on each side of the node plane
-                       PolygonD_Divide(portal->numpoints, portal->points, plane->normal[0], plane->normal[1], plane->normal[2], plane->dist, 1.0/32.0, MAX_PORTALPOINTS, frontpoints, &numfrontpoints, MAX_PORTALPOINTS, backpoints, &numbackpoints); 
+       // split the portals of this node along this node's plane and assign them to the children of this node
+       // (migrating the portals downward through the tree)
+       for (portal = (portal_t *)node->portals;portal;portal = nextportal)
+       {
+               if (portal->nodes[0] == portal->nodes[1])
+                       Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(2)");
+               if (portal->nodes[0] == node)
+                       side = 0;
+               else if (portal->nodes[1] == node)
+                       side = 1;
+               else
+                       Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
+               nextportal = portal->next[side];
+               if (!portal->numpoints)
+                       continue;
 
-                       if (!numfrontpoints)
-                       {
-                               if (side == 0)
-                                       AddPortalToNodes(portal, back, other_node);
-                               else
-                                       AddPortalToNodes(portal, other_node, back);
-                               continue;
-                       }
-                       if (!numbackpoints)
-                       {
-                               if (side == 0)
-                                       AddPortalToNodes(portal, front, other_node);
-                               else
-                                       AddPortalToNodes(portal, other_node, front);
-                               continue;
-                       }
+               other_node = portal->nodes[!side];
+               RemovePortalFromNodes(portal);
 
-                       // the portal is split
-                       splitportal = AllocPortal();
-                       temp = splitportal->chain;
-                       *splitportal = *portal;
-                       splitportal->chain = temp;
-                       for (i = 0;i < numbackpoints*3;i++)
-                               splitportal->points[i] = backpoints[i];
-                       splitportal->numpoints = numbackpoints;
-                       for (i = 0;i < numfrontpoints*3;i++)
-                               portal->points[i] = frontpoints[i];
-                       portal->numpoints = numfrontpoints;
+               // cut the portal into two portals, one on each side of the node plane
+               PolygonD_Divide(portal->numpoints, portal->points, plane->normal[0], plane->normal[1], plane->normal[2], plane->dist, 1.0/32.0, MAX_PORTALPOINTS, frontpoints, &numfrontpoints, MAX_PORTALPOINTS, backpoints, &numbackpoints);
 
+               if (!numfrontpoints)
+               {
+                       if (side == 0)
+                               AddPortalToNodes(portal, back, other_node);
+                       else
+                               AddPortalToNodes(portal, other_node, back);
+                       continue;
+               }
+               if (!numbackpoints)
+               {
                        if (side == 0)
-                       {
                                AddPortalToNodes(portal, front, other_node);
-                               AddPortalToNodes(splitportal, back, other_node);
-                       }
                        else
-                       {
                                AddPortalToNodes(portal, other_node, front);
-                               AddPortalToNodes(splitportal, other_node, back);
-                       }
+                       continue;
+               }
+
+               // the portal is split
+               splitportal = AllocPortal();
+               temp = splitportal->chain;
+               *splitportal = *portal;
+               splitportal->chain = temp;
+               for (i = 0;i < numbackpoints*3;i++)
+                       splitportal->points[i] = backpoints[i];
+               splitportal->numpoints = numbackpoints;
+               for (i = 0;i < numfrontpoints*3;i++)
+                       portal->points[i] = frontpoints[i];
+               portal->numpoints = numfrontpoints;
+
+               if (side == 0)
+               {
+                       AddPortalToNodes(portal, front, other_node);
+                       AddPortalToNodes(splitportal, back, other_node);
+               }
+               else
+               {
+                       AddPortalToNodes(portal, other_node, front);
+                       AddPortalToNodes(splitportal, other_node, back);
                }
        }
 
@@ -2660,66 +2872,20 @@ static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
 static void Mod_Q1BSP_MakePortals(void)
 {
        portalchain = NULL;
-       Mod_Q1BSP_RecursiveNodePortals(loadmodel->brushq1.nodes);
+       Mod_Q1BSP_RecursiveNodePortals(loadmodel->brush.data_nodes);
        Mod_Q1BSP_FinalizePortals();
 }
 
-static void Mod_Q1BSP_BuildSurfaceNeighbors(msurface_t *surfaces, int numsurfaces, mempool_t *mempool)
-{
-#if 0
-       int surfnum, vertnum, vertnum2, snum, vnum, vnum2;
-       msurface_t *surf, *s;
-       float *v0, *v1, *v2, *v3;
-       for (surf = surfaces, surfnum = 0;surfnum < numsurfaces;surf++, surfnum++)
-               surf->neighborsurfaces = Mem_Alloc(mempool, surf->poly_numverts * sizeof(msurface_t *));
-       for (surf = surfaces, surfnum = 0;surfnum < numsurfaces;surf++, surfnum++)
-       {
-               for (vertnum = surf->poly_numverts - 1, vertnum2 = 0, v0 = surf->poly_verts + (surf->poly_numverts - 1) * 3, v1 = surf->poly_verts;vertnum2 < surf->poly_numverts;vertnum = vertnum2, vertnum2++, v0 = v1, v1 += 3)
-               {
-                       if (surf->neighborsurfaces[vertnum])
-                               continue;
-                       surf->neighborsurfaces[vertnum] = NULL;
-                       for (s = surfaces, snum = 0;snum < numsurfaces;s++, snum++)
-                       {
-                               if (s->poly_mins[0] > (surf->poly_maxs[0] + 1) || s->poly_maxs[0] < (surf->poly_mins[0] - 1)
-                                || s->poly_mins[1] > (surf->poly_maxs[1] + 1) || s->poly_maxs[1] < (surf->poly_mins[1] - 1)
-                                || s->poly_mins[2] > (surf->poly_maxs[2] + 1) || s->poly_maxs[2] < (surf->poly_mins[2] - 1)
-                                || s == surf)
-                                       continue;
-                               for (vnum = 0;vnum < s->poly_numverts;vnum++)
-                                       if (s->neighborsurfaces[vnum] == surf)
-                                               break;
-                               if (vnum < s->poly_numverts)
-                                       continue;
-                               for (vnum = s->poly_numverts - 1, vnum2 = 0, v2 = s->poly_verts + (s->poly_numverts - 1) * 3, v3 = s->poly_verts;vnum2 < s->poly_numverts;vnum = vnum2, vnum2++, v2 = v3, v3 += 3)
-                               {
-                                       if (s->neighborsurfaces[vnum] == NULL
-                                        && ((v0[0] == v2[0] && v0[1] == v2[1] && v0[2] == v2[2] && v1[0] == v3[0] && v1[1] == v3[1] && v1[2] == v3[2])
-                                         || (v1[0] == v2[0] && v1[1] == v2[1] && v1[2] == v2[2] && v0[0] == v3[0] && v0[1] == v3[1] && v0[2] == v3[2])))
-                                       {
-                                               surf->neighborsurfaces[vertnum] = s;
-                                               s->neighborsurfaces[vnum] = surf;
-                                               break;
-                                       }
-                               }
-                               if (vnum < s->poly_numverts)
-                                       break;
-                       }
-               }
-       }
-#endif
-}
-
 static void Mod_Q1BSP_BuildLightmapUpdateChains(mempool_t *mempool, model_t *model)
 {
        int i, j, stylecounts[256], totalcount, remapstyles[256];
-       msurface_t *surf;
+       msurface_t *surface;
        memset(stylecounts, 0, sizeof(stylecounts));
        for (i = 0;i < model->nummodelsurfaces;i++)
        {
-               surf = model->brushq1.surfaces + model->firstmodelsurface + i;
+               surface = model->data_surfaces + model->firstmodelsurface + i;
                for (j = 0;j < MAXLIGHTMAPS;j++)
-                       stylecounts[surf->styles[j]]++;
+                       stylecounts[surface->lightmapinfo->styles[j]]++;
        }
        totalcount = 0;
        model->brushq1.light_styles = 0;
@@ -2733,10 +2899,10 @@ static void Mod_Q1BSP_BuildLightmapUpdateChains(mempool_t *mempool, model_t *mod
        }
        if (!totalcount)
                return;
-       model->brushq1.light_style = Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(qbyte));
-       model->brushq1.light_stylevalue = Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(int));
-       model->brushq1.light_styleupdatechains = Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(msurface_t **));
-       model->brushq1.light_styleupdatechainsbuffer = Mem_Alloc(mempool, totalcount * sizeof(msurface_t *));
+       model->brushq1.light_style = (unsigned char *)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(unsigned char));
+       model->brushq1.light_stylevalue = (int *)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(int));
+       model->brushq1.light_styleupdatechains = (msurface_t ***)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(msurface_t **));
+       model->brushq1.light_styleupdatechainsbuffer = (msurface_t **)Mem_Alloc(mempool, totalcount * sizeof(msurface_t *));
        model->brushq1.light_styles = 0;
        for (i = 0;i < 255;i++)
                if (stylecounts[i])
@@ -2749,10 +2915,10 @@ static void Mod_Q1BSP_BuildLightmapUpdateChains(mempool_t *mempool, model_t *mod
        }
        for (i = 0;i < model->nummodelsurfaces;i++)
        {
-               surf = model->brushq1.surfaces + model->firstmodelsurface + i;
+               surface = model->data_surfaces + model->firstmodelsurface + i;
                for (j = 0;j < MAXLIGHTMAPS;j++)
-                       if (surf->styles[j] != 255)
-                               *model->brushq1.light_styleupdatechains[remapstyles[surf->styles[j]]]++ = surf;
+                       if (surface->lightmapinfo->styles[j] != 255)
+                               *model->brushq1.light_styleupdatechains[remapstyles[surface->lightmapinfo->styles[j]]]++ = surface;
        }
        j = 0;
        for (i = 0;i < model->brushq1.light_styles;i++)
@@ -2763,49 +2929,12 @@ static void Mod_Q1BSP_BuildLightmapUpdateChains(mempool_t *mempool, model_t *mod
        }
 }
 
-static void Mod_Q1BSP_BuildPVSTextureChains(model_t *model)
-{
-       int i, j;
-       for (i = 0;i < model->brushq1.numtextures;i++)
-               model->brushq1.pvstexturechainslength[i] = 0;
-       for (i = 0, j = model->firstmodelsurface;i < model->nummodelsurfaces;i++, j++)
-       {
-               if (model->brushq1.surfacepvsframes[j] == model->brushq1.pvsframecount)
-               {
-                       model->brushq1.pvssurflist[model->brushq1.pvssurflistlength++] = j;
-                       model->brushq1.pvstexturechainslength[model->brushq1.surfaces[j].texinfo->texture->number]++;
-               }
-       }
-       for (i = 0, j = 0;i < model->brushq1.numtextures;i++)
-       {
-               if (model->brushq1.pvstexturechainslength[i])
-               {
-                       model->brushq1.pvstexturechains[i] = model->brushq1.pvstexturechainsbuffer + j;
-                       j += model->brushq1.pvstexturechainslength[i] + 1;
-               }
-               else
-                       model->brushq1.pvstexturechains[i] = NULL;
-       }
-       for (i = 0, j = model->firstmodelsurface;i < model->nummodelsurfaces;i++, j++)
-               if (model->brushq1.surfacepvsframes[j] == model->brushq1.pvsframecount)
-                       *model->brushq1.pvstexturechains[model->brushq1.surfaces[j].texinfo->texture->number]++ = model->brushq1.surfaces + j;
-       for (i = 0;i < model->brushq1.numtextures;i++)
-       {
-               if (model->brushq1.pvstexturechainslength[i])
-               {
-                       *model->brushq1.pvstexturechains[i] = NULL;
-                       model->brushq1.pvstexturechains[i] -= model->brushq1.pvstexturechainslength[i];
-               }
-       }
-}
-
 //Returns PVS data for a given point
 //(note: can return NULL)
-static qbyte *Mod_Q1BSP_GetPVS(model_t *model, const vec3_t p)
+static unsigned char *Mod_Q1BSP_GetPVS(model_t *model, const vec3_t p)
 {
        mnode_t *node;
-       Mod_CheckLoaded(model);
-       node = model->brushq1.nodes;
+       node = model->brush.data_nodes;
        while (node->plane)
                node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
        if (((mleaf_t *)node)->clusterindex >= 0)
@@ -2814,7 +2943,7 @@ static qbyte *Mod_Q1BSP_GetPVS(model_t *model, const vec3_t p)
                return NULL;
 }
 
-static void Mod_Q1BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org, vec_t radius, qbyte *pvsbuffer, int pvsbytes, mnode_t *node)
+static void Mod_Q1BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbytes, mnode_t *node)
 {
        while (node->plane)
        {
@@ -2834,7 +2963,7 @@ static void Mod_Q1BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org,
        if (((mleaf_t *)node)->clusterindex >= 0)
        {
                int i;
-               qbyte *pvs = model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
+               unsigned char *pvs = model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
                for (i = 0;i < pvsbytes;i++)
                        pvsbuffer[i] |= pvs[i];
        }
@@ -2842,17 +2971,17 @@ static void Mod_Q1BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org,
 
 //Calculates a PVS that is the inclusive or of all leafs within radius pixels
 //of the given point.
-static int Mod_Q1BSP_FatPVS(model_t *model, const vec3_t org, vec_t radius, qbyte *pvsbuffer, int pvsbufferlength)
+static int Mod_Q1BSP_FatPVS(model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbufferlength)
 {
-       int bytes = ((model->brushq1.num_leafs - 1) + 7) >> 3;
+       int bytes = model->brush.num_pvsclusterbytes;
        bytes = min(bytes, pvsbufferlength);
-       if (r_novis.integer || !Mod_Q1BSP_GetPVS(model, org))
+       if (r_novis.integer || !model->brush.num_pvsclusters || !Mod_Q1BSP_GetPVS(model, org))
        {
                memset(pvsbuffer, 0xFF, bytes);
                return bytes;
        }
        memset(pvsbuffer, 0, bytes);
-       Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brushq1.nodes);
+       Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brush.data_nodes);
        return bytes;
 }
 
@@ -2862,7 +2991,16 @@ static void Mod_Q1BSP_RoundUpToHullSize(model_t *cmodel, const vec3_t inmins, co
        const hull_t *hull;
 
        VectorSubtract(inmaxs, inmins, size);
-       if (cmodel->brush.ishlbsp)
+       if (cmodel->brush.ismcbsp)
+       {
+               if (size[0] < 3)
+                       hull = &cmodel->brushq1.hulls[0]; // 0x0x0
+               else if (size[2] < 48) // pick the nearest of 40 or 56
+                       hull = &cmodel->brushq1.hulls[2]; // 16x16x40
+               else
+                       hull = &cmodel->brushq1.hulls[1]; // 16x16x56
+       }
+       else if (cmodel->brush.ishlbsp)
        {
                if (size[0] < 3)
                        hull = &cmodel->brushq1.hulls[0]; // 0x0x0
@@ -2889,77 +3027,102 @@ static void Mod_Q1BSP_RoundUpToHullSize(model_t *cmodel, const vec3_t inmins, co
        VectorAdd(inmins, hull->clip_size, outmaxs);
 }
 
-/*
-void Mod_Q1BSP_RecursiveGetVisible(mnode_t *node, model_t *model, const vec3_t point, const vec3_t mins, const vec3_t maxs, int maxleafs, mleaf_t *leaflist, int *numleafs, int maxsurfaces, msurface_t *surfacelist, int *numsurfaces, const qbyte *pvs)
-{
-       mleaf_t *leaf;
-       for (;;)
-       {
-               if (!BoxesOverlap(node->mins, node->maxs, mins, maxs))
-                       return;
-               if (!node->plane)
-                       break;
-               Mod_Q1BSP_RecursiveGetVisible(node->children[0], model, point, mins, maxs, maxleafs, leaflist, numleafs, maxsurfaces, surfacelist, numsurfaces, pvs);
-               node = node->children[1];
-       }
-       leaf = (mleaf_t *)node;
-       if ((pvs == NULL || CHECKPVSBIT(pvs, leaf->clusterindex)))
-       {
-               int marksurfacenum;
-               msurface_t *surf;
-               if (maxleafs && *numleafs < maxleafs)
-                       leaflist[(*numleafs)++] = leaf;
-               if (maxsurfaces)
-               {
-                       for (marksurfacenum = 0;marksurfacenum < leaf->nummarksurfaces;marksurfacenum++)
-                       {
-                               surf = model->brushq1.surfaces + leaf->firstmarksurface[marksurfacenum];
-                               if (surf->shadowmark != shadowmarkcount)
-                               {
-                                       surf->shadowmark = shadowmarkcount;
-                                       if (BoxesOverlap(mins, maxs, surf->poly_mins, surf->poly_maxs) && ((surf->flags & SURF_PLANEBACK) ? PlaneDiff(point, surf->plane) < 0 : PlaneDiff(point, surf->plane) > 0) && *numsurfaces < maxsurfaces)
-                                               surfacelist[(*numsurfaces)++] = surf;
-                               }
-                       }
-               }
-       }
-}
-
-void Mod_Q1BSP_GetVisible(model_t *model, const vec3_t point, const vec3_t mins, const vec3_t maxs, int maxleafs, mleaf_t *leaflist, int *numleafs, int maxsurfaces, msurface_t *surfacelist, int *numsurfaces)
-{
-       // FIXME: support portals
-       if (maxsurfaces)
-               *numsurfaces = 0;
-       if (maxleafs)
-               *numleafs = 0;
-       pvs = ent->model->brush.GetPVS(ent->model, relativelightorigin);
-       Mod_Q1BSP_RecursiveGetVisible(ent->model->brushq1.nodes + ent->model->brushq1.firstclipnode, model, point, mins, maxs, maxleafs, leaflist, numleafs, maxsurfaces, surfacelist, numsurfaces);
-}
-*/
-
-extern void R_Q1BSP_DrawSky(entity_render_t *ent);
-extern void R_Q1BSP_Draw(entity_render_t *ent);
-extern void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, vec3_t outmins, vec3_t outmaxs, int *outclusterlist, qbyte *outclusterpvs, int *outnumclusterspointer, int *outsurfacelist, qbyte *outsurfacepvs, int *outnumsurfacespointer);
-extern void R_Q1BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist);
-extern void R_Q1BSP_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltolight, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz, rtexture_t *lightcubemap, int numsurfaces, const int *surfacelist);
-void Mod_Q1BSP_Load(model_t *mod, void *buffer)
+void Mod_Q1BSP_Load(model_t *mod, void *buffer, void *bufferend)
 {
        int i, j, k;
        dheader_t *header;
        dmodel_t *bm;
        mempool_t *mainmempool;
        float dist, modelyawradius, modelradius, *vec;
-       msurface_t *surf;
+       msurface_t *surface;
        int numshadowmeshtriangles;
+       dheader_t _header;
+       hullinfo_t hullinfo;
 
        mod->type = mod_brushq1;
 
-       header = (dheader_t *)buffer;
+       if (!memcmp (buffer, "MCBSPpad", 8))
+       {
+               unsigned char   *index;
 
-       i = LittleLong(header->version);
-       if (i != BSPVERSION && i != 30)
-               Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i(Quake) or 30(HalfLife))", mod->name, i, BSPVERSION);
-       mod->brush.ishlbsp = i == 30;
+               mod->brush.ismcbsp = true;
+               mod->brush.ishlbsp = false;
+
+               mod_base = (unsigned char*)buffer;
+
+               index = mod_base;
+               index += 8;
+               i = SB_ReadInt (&index);
+               if (i != MCBSPVERSION)
+                       Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i)", mod->name, i, MCBSPVERSION);
+
+       // read hull info
+               hullinfo.numhulls = LittleLong(*(int*)index); index += 4;
+               hullinfo.filehulls = hullinfo.numhulls;
+               VectorClear (hullinfo.hullsizes[0][0]);
+               VectorClear (hullinfo.hullsizes[0][1]);
+               for (i = 1; i < hullinfo.numhulls; i++)
+               {
+                       hullinfo.hullsizes[i][0][0] = SB_ReadFloat (&index);
+                       hullinfo.hullsizes[i][0][1] = SB_ReadFloat (&index);
+                       hullinfo.hullsizes[i][0][2] = SB_ReadFloat (&index);
+                       hullinfo.hullsizes[i][1][0] = SB_ReadFloat (&index);
+                       hullinfo.hullsizes[i][1][1] = SB_ReadFloat (&index);
+                       hullinfo.hullsizes[i][1][2] = SB_ReadFloat (&index);
+               }
+
+       // read lumps
+               _header.version = 0;
+               for (i = 0; i < HEADER_LUMPS; i++)
+               {
+                       _header.lumps[i].fileofs = SB_ReadInt (&index);
+                       _header.lumps[i].filelen = SB_ReadInt (&index);
+               }
+
+               header = &_header;
+       }
+       else
+       {
+               header = (dheader_t *)buffer;
+
+               i = LittleLong(header->version);
+               if (i != BSPVERSION && i != 30)
+                       Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i(Quake) or 30(HalfLife)", mod->name, i, BSPVERSION);
+               mod->brush.ishlbsp = i == 30;
+               mod->brush.ismcbsp = false;
+
+       // fill in hull info
+               VectorClear (hullinfo.hullsizes[0][0]);
+               VectorClear (hullinfo.hullsizes[0][1]);
+               if (mod->brush.ishlbsp)
+               {
+                       hullinfo.numhulls = 4;
+                       hullinfo.filehulls = 4;
+                       VectorSet (hullinfo.hullsizes[1][0], -16, -16, -36);
+                       VectorSet (hullinfo.hullsizes[1][1], 16, 16, 36);
+                       VectorSet (hullinfo.hullsizes[2][0], -32, -32, -32);
+                       VectorSet (hullinfo.hullsizes[2][1], 32, 32, 32);
+                       VectorSet (hullinfo.hullsizes[3][0], -16, -16, -18);
+                       VectorSet (hullinfo.hullsizes[3][1], 16, 16, 18);
+               }
+               else
+               {
+                       hullinfo.numhulls = 3;
+                       hullinfo.filehulls = 4;
+                       VectorSet (hullinfo.hullsizes[1][0], -16, -16, -24);
+                       VectorSet (hullinfo.hullsizes[1][1], 16, 16, 32);
+                       VectorSet (hullinfo.hullsizes[2][0], -32, -32, -24);
+                       VectorSet (hullinfo.hullsizes[2][1], 32, 32, 64);
+               }
+
+       // read lumps
+               mod_base = (unsigned char*)buffer;
+               for (i = 0; i < HEADER_LUMPS; i++)
+               {
+                       header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
+                       header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
+               }
+       }
 
        mod->soundfromcenter = true;
        mod->TraceBox = Mod_Q1BSP_TraceBox;
@@ -2968,24 +3131,19 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
        mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
        mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
        mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
+       mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
+       mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
+       mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
        mod->brush.LightPoint = Mod_Q1BSP_LightPoint;
        mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
        mod->brush.AmbientSoundLevelsForPoint = Mod_Q1BSP_AmbientSoundLevelsForPoint;
        mod->brush.RoundUpToHullSize = Mod_Q1BSP_RoundUpToHullSize;
-       mod->brushq1.PointInLeaf = Mod_Q1BSP_PointInLeaf;
-       mod->brushq1.BuildPVSTextureChains = Mod_Q1BSP_BuildPVSTextureChains;
+       mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
 
        if (loadmodel->isworldmodel)
-               Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
-
-// swap all the lumps
-       mod_base = (qbyte *)header;
-
-       header->version = LittleLong(header->version);
-       for (i = 0;i < HEADER_LUMPS;i++)
        {
-               header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
-               header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
+               Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
+               Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
        }
 
 // load into heap
@@ -3002,13 +3160,13 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
        Mod_Q1BSP_LoadPlanes(&header->lumps[LUMP_PLANES]);
        Mod_Q1BSP_LoadTexinfo(&header->lumps[LUMP_TEXINFO]);
        Mod_Q1BSP_LoadFaces(&header->lumps[LUMP_FACES]);
-       Mod_Q1BSP_LoadMarksurfaces(&header->lumps[LUMP_MARKSURFACES]);
+       Mod_Q1BSP_LoadLeaffaces(&header->lumps[LUMP_MARKSURFACES]);
        Mod_Q1BSP_LoadVisibility(&header->lumps[LUMP_VISIBILITY]);
        // load submodels before leafs because they contain the number of vis leafs
-       Mod_Q1BSP_LoadSubmodels(&header->lumps[LUMP_MODELS]);
+       Mod_Q1BSP_LoadSubmodels(&header->lumps[LUMP_MODELS], &hullinfo);
        Mod_Q1BSP_LoadLeafs(&header->lumps[LUMP_LEAFS]);
        Mod_Q1BSP_LoadNodes(&header->lumps[LUMP_NODES]);
-       Mod_Q1BSP_LoadClipnodes(&header->lumps[LUMP_CLIPNODES]);
+       Mod_Q1BSP_LoadClipnodes(&header->lumps[LUMP_CLIPNODES], &hullinfo);
 
        if (!mod->brushq1.lightdata)
                mod->brush.LightPoint = NULL;
@@ -3022,25 +3180,36 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
        Mod_Q1BSP_MakePortals();
 
        mod->numframes = 2;             // regular and alternate animation
+       mod->numskins = 1;
 
        mainmempool = mod->mempool;
 
        Mod_Q1BSP_LoadLightList();
-       loadmodel = loadmodel;
 
        // make a single combined shadow mesh to allow optimized shadow volume creation
        numshadowmeshtriangles = 0;
-       for (j = 0, surf = loadmodel->brushq1.surfaces;j < loadmodel->brushq1.numsurfaces;j++, surf++)
+       for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
        {
-               surf->num_firstshadowmeshtriangle = numshadowmeshtriangles;
-               numshadowmeshtriangles += surf->mesh.num_triangles;
+               surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
+               numshadowmeshtriangles += surface->num_triangles;
        }
        loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
-       for (j = 0, surf = loadmodel->brushq1.surfaces;j < loadmodel->brushq1.numsurfaces;j++, surf++)
-               Mod_ShadowMesh_AddMesh(loadmodel->mempool, loadmodel->brush.shadowmesh, NULL, NULL, NULL, surf->mesh.data_vertex3f, NULL, NULL, NULL, NULL, surf->mesh.num_triangles, surf->mesh.data_element3i);
+       for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
+               Mod_ShadowMesh_AddMesh(loadmodel->mempool, loadmodel->brush.shadowmesh, NULL, NULL, NULL, surface->groupmesh->data_vertex3f, NULL, NULL, NULL, NULL, surface->num_triangles, (surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle));
        loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true);
        Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
-       
+
+       if (loadmodel->brush.numsubmodels)
+               loadmodel->brush.submodels = (model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(model_t *));
+
+       if (loadmodel->isworldmodel)
+       {
+               // clear out any stale submodels or worldmodels lying around
+               // if we did this clear before now, an error might abort loading and
+               // leave things in a bad state
+               Mod_RemoveStaleWorldModels(loadmodel);
+       }
+
        // LordHavoc: to clear the fog around the original quake submodel code, I
        // will explain:
        // first of all, some background info on the submodels:
@@ -3080,6 +3249,11 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
                        mod->mempool = NULL;
                }
 
+               mod->brush.submodel = i;
+
+               if (loadmodel->brush.submodels)
+                       loadmodel->brush.submodels[i] = mod;
+
                bm = &mod->brushq1.submodels[i];
 
                mod->brushq1.hulls[0].firstclipnode = bm->headnode[0];
@@ -3093,7 +3267,7 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
                mod->nummodelsurfaces = bm->numfaces;
 
                // make the model surface list (used by shadowing/lighting)
-               mod->surfacelist = Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
+               mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
                for (j = 0;j < mod->nummodelsurfaces;j++)
                        mod->surfacelist[j] = mod->firstmodelsurface + j;
 
@@ -3101,6 +3275,7 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
                mod->DrawSky = NULL;
                mod->Draw = R_Q1BSP_Draw;
                mod->GetLightInfo = R_Q1BSP_GetLightInfo;
+               mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
                mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
                mod->DrawLight = R_Q1BSP_DrawLight;
                if (i != 0)
@@ -3108,13 +3283,12 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
                        mod->brush.GetPVS = NULL;
                        mod->brush.FatPVS = NULL;
                        mod->brush.BoxTouchingPVS = NULL;
+                       mod->brush.BoxTouchingLeafPVS = NULL;
+                       mod->brush.BoxTouchingVisibleLeafs = NULL;
+                       mod->brush.FindBoxClusters = NULL;
                        mod->brush.LightPoint = NULL;
                        mod->brush.AmbientSoundLevelsForPoint = NULL;
                }
-               mod->brushq1.pvstexturechains = Mem_Alloc(loadmodel->mempool, mod->brushq1.numtextures * sizeof(msurface_t **));
-               mod->brushq1.pvstexturechainsbuffer = Mem_Alloc(loadmodel->mempool,(mod->nummodelsurfaces + mod->brushq1.numtextures) * sizeof(msurface_t *));
-               mod->brushq1.pvstexturechainslength = Mem_Alloc(loadmodel->mempool, mod->brushq1.numtextures * sizeof(int));
-               Mod_Q1BSP_BuildPVSTextureChains(mod);
                Mod_Q1BSP_BuildLightmapUpdateChains(loadmodel->mempool, mod);
                if (mod->nummodelsurfaces)
                {
@@ -3123,16 +3297,13 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
                        mod->normalmaxs[0] = mod->normalmaxs[1] = mod->normalmaxs[2] = -1000000000.0f;
                        modelyawradius = 0;
                        modelradius = 0;
-                       for (j = 0, surf = &mod->brushq1.surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surf++)
+                       for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
                        {
                                // we only need to have a drawsky function if it is used(usually only on world model)
-                               if (surf->texinfo->texture->flags & SURF_DRAWSKY)
+                               if (surface->texture->basematerialflags & MATERIALFLAG_SKY)
                                        mod->DrawSky = R_Q1BSP_DrawSky;
-                               // LordHavoc: submodels always clip, even if water
-                               if (mod->brush.numsubmodels - 1)
-                                       surf->flags |= SURF_SOLIDCLIP;
                                // calculate bounding shapes
-                               for (k = 0, vec = surf->mesh.data_vertex3f;k < surf->mesh.num_vertices;k++, vec += 3)
+                               for (k = 0, vec = (surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex);k < surface->num_vertices;k++, vec += 3)
                                {
                                        if (mod->normalmins[0] > vec[0]) mod->normalmins[0] = vec[0];
                                        if (mod->normalmins[1] > vec[1]) mod->normalmins[1] = vec[1];
@@ -3163,15 +3334,15 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
                        // LordHavoc: empty submodel(lacrima.bsp has such a glitch)
                        Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
                }
-               Mod_Q1BSP_BuildSurfaceNeighbors(mod->brushq1.surfaces + mod->firstmodelsurface, mod->nummodelsurfaces, loadmodel->mempool);
-
-               mod->brushq1.num_visleafs = bm->visleafs;
+               //mod->brushq1.num_visleafs = bm->visleafs;
        }
 
+       Mod_Q1BSP_LoadMapBrushes();
+
        //Mod_Q1BSP_ProcessLightList();
 
        if (developer.integer)
-               Con_Printf("Some stats for q1bsp model \"%s\": %i faces, %i nodes, %i leafs, %i visleafs, %i visleafportals\n", loadmodel->name, loadmodel->brushq1.numsurfaces, loadmodel->brushq1.numnodes, loadmodel->brushq1.num_leafs, loadmodel->brushq1.num_visleafs, loadmodel->brushq1.numportals);
+               Con_Printf("Some stats for q1bsp model \"%s\": %i faces, %i nodes, %i leafs, %i visleafs, %i visleafportals\n", loadmodel->name, loadmodel->num_surfaces, loadmodel->brush.num_nodes, loadmodel->brush.num_leafs, mod->brush.num_pvsclusters, loadmodel->brush.num_portals);
 }
 
 static void Mod_Q2BSP_LoadEntities(lump_t *l)
@@ -3552,7 +3723,7 @@ static void Mod_Q2BSP_LoadModels(lump_t *l)
 */
 }
 
-void static Mod_Q2BSP_Load(model_t *mod, void *buffer)
+void static Mod_Q2BSP_Load(model_t *mod, void *buffer, void *bufferend)
 {
        int i;
        q2dheader_t *header;
@@ -3567,10 +3738,14 @@ void static Mod_Q2BSP_Load(model_t *mod, void *buffer)
        if (i != Q2BSPVERSION)
                Host_Error("Mod_Q2BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q2BSPVERSION);
        mod->brush.ishlbsp = false;
+       mod->brush.ismcbsp = false;
        if (loadmodel->isworldmodel)
+       {
                Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
+               Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
+       }
 
-       mod_base = (qbyte *)header;
+       mod_base = (unsigned char *)header;
 
        // swap all the lumps
        for (i = 0;i < (int) sizeof(*header) / 4;i++)
@@ -3613,7 +3788,7 @@ static void Mod_Q3BSP_LoadEntities(lump_t *l)
        loadmodel->brushq3.num_lightgrid_cellsize[2] = 128;
        if (!l->filelen)
                return;
-       loadmodel->brush.entities = Mem_Alloc(loadmodel->mempool, l->filelen);
+       loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
        memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
        data = loadmodel->brush.entities;
        // some Q3 maps override the lightgrid_cellsize with a worldspawn key
@@ -3646,7 +3821,7 @@ static void Mod_Q3BSP_LoadEntities(lump_t *l)
 static void Mod_Q3BSP_LoadTextures(lump_t *l)
 {
        q3dtexture_t *in;
-       q3mtexture_t *out;
+       texture_t *out;
        int i, count;
        int j, c;
        fssearch_t *search;
@@ -3658,22 +3833,20 @@ static void Mod_Q3BSP_LoadTextures(lump_t *l)
        char firstpasstexturename[Q3PATHLENGTH];
        char parameter[4][Q3PATHLENGTH];
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (q3dtexture_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q3BSP_LoadTextures: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+       out = (texture_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       loadmodel->brushq3.data_textures = out;
-       loadmodel->brushq3.num_textures = count;
+       loadmodel->data_textures = out;
+       loadmodel->num_textures = count;
 
        for (i = 0;i < count;i++, in++, out++)
        {
-               out->number = i;
                strlcpy (out->name, in->name, sizeof (out->name));
                out->surfaceflags = LittleLong(in->surfaceflags);
-               out->nativecontents = LittleLong(in->contents);
-               out->supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, out->nativecontents);
+               out->supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in->contents));
                out->surfaceparms = -1;
        }
 
@@ -3682,7 +3855,7 @@ static void Mod_Q3BSP_LoadTextures(lump_t *l)
        {
                for (i = 0;i < search->numfilenames;i++)
                {
-                       if ((f = FS_LoadFile(search->filenames[i], tempmempool, false)))
+                       if ((f = (char *)FS_LoadFile(search->filenames[i], tempmempool, false)))
                        {
                                text = f;
                                while (COM_ParseToken(&text, false))
@@ -3727,7 +3900,7 @@ static void Mod_Q3BSP_LoadTextures(lump_t *l)
                                                                        }
                                                                        if (passnumber == 0 && numparameters >= 1)
                                                                        {
-                                                                               if (!strcasecmp(parameter[0], "blendfunc"))
+                                                                               if (!strcasecmp(parameter[0], "blendfunc") && (flags & Q3SURFACEPARM_TRANS))
                                                                                {
                                                                                        if (numparameters == 2 && !strcasecmp(parameter[1], "add"))
                                                                                                flags2 |= Q3TEXTUREFLAG_ADDITIVE;
@@ -3740,6 +3913,8 @@ static void Mod_Q3BSP_LoadTextures(lump_t *l)
                                                                                        strlcpy(firstpasstexturename, parameter[1], sizeof(firstpasstexturename));
                                                                                else if (numparameters >= 3 && !strcasecmp(parameter[0], "animmap"))
                                                                                        strlcpy(firstpasstexturename, parameter[2], sizeof(firstpasstexturename));
+                                                                               else if (numparameters >= 2 && !strcasecmp(parameter[0], "alphafunc"))
+                                                                                       flags2 |= Q3TEXTUREFLAG_ALPHATEST;
                                                                        }
                                                                        // break out a level if it was }
                                                                        if (!strcasecmp(com_token, "}"))
@@ -3824,6 +3999,8 @@ static void Mod_Q3BSP_LoadTextures(lump_t *l)
                                                                        flags |= Q3SURFACEPARM_TRANS;
                                                                else if (!strcasecmp(parameter[1], "water"))
                                                                        flags |= Q3SURFACEPARM_WATER;
+                                                               else if (!strcasecmp(parameter[1], "pointlight"))
+                                                                       flags |= Q3SURFACEPARM_POINTLIGHT;
                                                                else
                                                                        Con_Printf("%s parsing warning: unknown surfaceparm \"%s\"\n", search->filenames[i], parameter[1]);
                                                        }
@@ -3851,24 +4028,44 @@ static void Mod_Q3BSP_LoadTextures(lump_t *l)
                                                                        flags2 |= Q3TEXTUREFLAG_AUTOSPRITE2;
                                                        }
                                                }
-                                               // force transparent render path for a number of odd
-                                               // shader effects to avoid bogging down the normal
-                                               // render path unnecessarily
-                                               if (flags2 & (Q3TEXTUREFLAG_ADDITIVE | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2))
-                                                       flags |= Q3SURFACEPARM_TRANS;
                                                // add shader to list (shadername and flags)
                                                // actually here we just poke into the texture settings
-                                               for (j = 0, out = loadmodel->brushq3.data_textures;j < loadmodel->brushq3.num_textures;j++, out++)
+                                               for (j = 0, out = loadmodel->data_textures;j < loadmodel->num_textures;j++, out++)
                                                {
                                                        if (!strcasecmp(out->name, shadername))
                                                        {
                                                                out->surfaceparms = flags;
                                                                out->textureflags = flags2;
+                                                               out->basematerialflags = 0;
+                                                               if (out->surfaceparms & Q3SURFACEPARM_NODRAW)
+                                                                       out->basematerialflags |= MATERIALFLAG_NODRAW;
+                                                               else if (out->surfaceparms & Q3SURFACEPARM_SKY)
+                                                                       out->basematerialflags |= MATERIALFLAG_SKY;
+                                                               else if (out->surfaceparms & Q3SURFACEPARM_LAVA)
+                                                                       out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_FULLBRIGHT;
+                                                               else if (out->surfaceparms & Q3SURFACEPARM_SLIME)
+                                                                       out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_WATERALPHA;
+                                                               else if (out->surfaceparms & Q3SURFACEPARM_WATER)
+                                                                       out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_WATERALPHA;
+                                                               else
+                                                                       out->basematerialflags |= MATERIALFLAG_WALL;
+                                                               if (out->textureflags & Q3TEXTUREFLAG_ALPHATEST)
+                                                               {
+                                                                       // FIXME: support alpha test?
+                                                                       out->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_TRANSPARENT;
+                                                               }
+                                                               else if (out->surfaceparms & Q3SURFACEPARM_TRANS)
+                                                               {
+                                                                       if (out->textureflags & Q3TEXTUREFLAG_ADDITIVE)
+                                                                               out->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_TRANSPARENT;
+                                                                       else
+                                                                               out->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_TRANSPARENT;
+                                                               }
                                                                strlcpy(out->firstpasstexturename, firstpasstexturename, sizeof(out->firstpasstexturename));
                                                                if ((flags & Q3SURFACEPARM_SKY) && sky[0])
                                                                {
                                                                        // quake3 seems to append a _ to the skybox name, so this must do so as well
-                                                                       snprintf(loadmodel->brush.skybox, sizeof(loadmodel->brush.skybox), "%s_", sky);
+                                                                       dpsnprintf(loadmodel->brush.skybox, sizeof(loadmodel->brush.skybox), "%s_", sky);
                                                                }
                                                        }
                                                }
@@ -3886,26 +4083,37 @@ parseerror:
        }
 
        c = 0;
-       for (j = 0, out = loadmodel->brushq3.data_textures;j < loadmodel->brushq3.num_textures;j++, out++)
+       for (j = 0, out = loadmodel->data_textures;j < loadmodel->num_textures;j++, out++)
        {
                if (out->surfaceparms == -1)
                {
                        c++;
                        Con_DPrintf("%s: No shader found for texture \"%s\"\n", loadmodel->name, out->name);
                        out->surfaceparms = 0;
+                       if (out->surfaceflags & Q3SURFACEFLAG_NODRAW)
+                               out->basematerialflags |= MATERIALFLAG_NODRAW;
+                       else if (out->surfaceflags & Q3SURFACEFLAG_SKY)
+                               out->basematerialflags |= MATERIALFLAG_SKY;
+                       else
+                               out->basematerialflags |= MATERIALFLAG_WALL;
                        // these are defaults
-                       if (!strncmp(out->name, "textures/skies/", 15))
-                               out->surfaceparms |= Q3SURFACEPARM_SKY;
+                       //if (!strncmp(out->name, "textures/skies/", 15))
+                       //      out->surfaceparms |= Q3SURFACEPARM_SKY;
                        //if (!strcmp(out->name, "caulk") || !strcmp(out->name, "common/caulk") || !strcmp(out->name, "textures/common/caulk")
                        // || !strcmp(out->name, "nodraw") || !strcmp(out->name, "common/nodraw") || !strcmp(out->name, "textures/common/nodraw"))
                        //      out->surfaceparms |= Q3SURFACEPARM_NODRAW;
                        //if (R_TextureHasAlpha(out->skin.base))
                        //      out->surfaceparms |= Q3SURFACEPARM_TRANS;
                }
-               if (!Mod_LoadSkinFrame(&out->skin, out->name, (((out->textureflags & Q3TEXTUREFLAG_NOMIPMAPS) || (out->surfaceparms & Q3SURFACEPARM_NOMIPMAPS)) ? 0 : TEXF_MIPMAP) | TEXF_ALPHA | TEXF_PRECACHE | (out->textureflags & Q3TEXTUREFLAG_NOPICMIP ? 0 : TEXF_PICMIP), false, true, true))
-                       Mod_LoadSkinFrame(&out->skin, out->firstpasstexturename, (((out->textureflags & Q3TEXTUREFLAG_NOMIPMAPS) || (out->surfaceparms & Q3SURFACEPARM_NOMIPMAPS)) ? 0 : TEXF_MIPMAP) | TEXF_ALPHA | TEXF_PRECACHE | (out->textureflags & Q3TEXTUREFLAG_NOPICMIP ? 0 : TEXF_PICMIP), false, true, true);
-       }
-       Con_DPrintf("%s: %i textures missing shaders\n", loadmodel->name, c);
+               if (!Mod_LoadSkinFrame(&out->skin, out->name, (((out->textureflags & Q3TEXTUREFLAG_NOMIPMAPS) || (out->surfaceparms & Q3SURFACEPARM_NOMIPMAPS)) ? 0 : TEXF_MIPMAP) | TEXF_ALPHA | TEXF_PRECACHE | (out->textureflags & Q3TEXTUREFLAG_NOPICMIP ? 0 : TEXF_PICMIP), false, true))
+                       if (!Mod_LoadSkinFrame(&out->skin, out->firstpasstexturename, (((out->textureflags & Q3TEXTUREFLAG_NOMIPMAPS) || (out->surfaceparms & Q3SURFACEPARM_NOMIPMAPS)) ? 0 : TEXF_MIPMAP) | TEXF_ALPHA | TEXF_PRECACHE | (out->textureflags & Q3TEXTUREFLAG_NOPICMIP ? 0 : TEXF_PICMIP), false, true))
+                               if (cls.state != ca_dedicated)
+                                       Con_Printf("%s: texture loading for shader \"%s\" failed (first layer \"%s\" not found either)\n", loadmodel->name, out->name, out->firstpasstexturename);
+               // no animation
+               out->currentframe = out;
+       }
+       if (c)
+               Con_DPrintf("%s: %i textures missing shaders\n", loadmodel->name, c);
 }
 
 static void Mod_Q3BSP_LoadPlanes(lump_t *l)
@@ -3914,21 +4122,21 @@ static void Mod_Q3BSP_LoadPlanes(lump_t *l)
        mplane_t *out;
        int i, count;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (q3dplane_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q3BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+       out = (mplane_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       loadmodel->brushq3.data_planes = out;
-       loadmodel->brushq3.num_planes = count;
+       loadmodel->brush.data_planes = out;
+       loadmodel->brush.num_planes = count;
 
        for (i = 0;i < count;i++, in++, out++)
        {
-               out->normal[0] = LittleLong(in->normal[0]);
-               out->normal[1] = LittleLong(in->normal[1]);
-               out->normal[2] = LittleLong(in->normal[2]);
-               out->dist = LittleLong(in->dist);
+               out->normal[0] = LittleFloat(in->normal[0]);
+               out->normal[1] = LittleFloat(in->normal[1]);
+               out->normal[2] = LittleFloat(in->normal[2]);
+               out->dist = LittleFloat(in->dist);
                PlaneClassify(out);
        }
 }
@@ -3939,25 +4147,25 @@ static void Mod_Q3BSP_LoadBrushSides(lump_t *l)
        q3mbrushside_t *out;
        int i, n, count;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (q3dbrushside_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+       out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       loadmodel->brushq3.data_brushsides = out;
-       loadmodel->brushq3.num_brushsides = count;
+       loadmodel->brush.data_brushsides = out;
+       loadmodel->brush.num_brushsides = count;
 
        for (i = 0;i < count;i++, in++, out++)
        {
                n = LittleLong(in->planeindex);
-               if (n < 0 || n >= loadmodel->brushq3.num_planes)
-                       Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)\n", n, loadmodel->brushq3.num_planes);
-               out->plane = loadmodel->brushq3.data_planes + n;
+               if (n < 0 || n >= loadmodel->brush.num_planes)
+                       Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)\n", n, loadmodel->brush.num_planes);
+               out->plane = loadmodel->brush.data_planes + n;
                n = LittleLong(in->textureindex);
-               if (n < 0 || n >= loadmodel->brushq3.num_textures)
-                       Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)\n", n, loadmodel->brushq3.num_textures);
-               out->texture = loadmodel->brushq3.data_textures + n;
+               if (n < 0 || n >= loadmodel->num_textures)
+                       Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)\n", n, loadmodel->num_textures);
+               out->texture = loadmodel->data_textures + n;
        }
 }
 
@@ -3968,14 +4176,14 @@ static void Mod_Q3BSP_LoadBrushes(lump_t *l)
        int i, j, n, c, count, maxplanes;
        mplane_t *planes;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (q3dbrush_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q3BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+       out = (q3mbrush_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       loadmodel->brushq3.data_brushes = out;
-       loadmodel->brushq3.num_brushes = count;
+       loadmodel->brush.data_brushes = out;
+       loadmodel->brush.num_brushes = count;
 
        maxplanes = 0;
        planes = NULL;
@@ -3984,14 +4192,14 @@ static void Mod_Q3BSP_LoadBrushes(lump_t *l)
        {
                n = LittleLong(in->firstbrushside);
                c = LittleLong(in->numbrushsides);
-               if (n < 0 || n + c > loadmodel->brushq3.num_brushsides)
-                       Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)\n", n, n + c, loadmodel->brushq3.num_brushsides);
-               out->firstbrushside = loadmodel->brushq3.data_brushsides + n;
+               if (n < 0 || n + c > loadmodel->brush.num_brushsides)
+                       Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)\n", n, n + c, loadmodel->brush.num_brushsides);
+               out->firstbrushside = loadmodel->brush.data_brushsides + n;
                out->numbrushsides = c;
                n = LittleLong(in->textureindex);
-               if (n < 0 || n >= loadmodel->brushq3.num_textures)
-                       Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)\n", n, loadmodel->brushq3.num_textures);
-               out->texture = loadmodel->brushq3.data_textures + n;
+               if (n < 0 || n >= loadmodel->num_textures)
+                       Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)\n", n, loadmodel->num_textures);
+               out->texture = loadmodel->data_textures + n;
 
                // make a list of mplane_t structs to construct a colbrush from
                if (maxplanes < out->numbrushsides)
@@ -3999,7 +4207,7 @@ static void Mod_Q3BSP_LoadBrushes(lump_t *l)
                        maxplanes = out->numbrushsides;
                        if (planes)
                                Mem_Free(planes);
-                       planes = Mem_Alloc(tempmempool, sizeof(mplane_t) * maxplanes);
+                       planes = (mplane_t *)Mem_Alloc(tempmempool, sizeof(mplane_t) * maxplanes);
                }
                for (j = 0;j < out->numbrushsides;j++)
                {
@@ -4016,14 +4224,14 @@ static void Mod_Q3BSP_LoadBrushes(lump_t *l)
 static void Mod_Q3BSP_LoadEffects(lump_t *l)
 {
        q3deffect_t *in;
-       q3meffect_t *out;
+       q3deffect_t *out;
        int i, n, count;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (q3deffect_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q3BSP_LoadEffects: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+       out = (q3deffect_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
        loadmodel->brushq3.data_effects = out;
        loadmodel->brushq3.num_effects = count;
@@ -4032,9 +4240,12 @@ static void Mod_Q3BSP_LoadEffects(lump_t *l)
        {
                strlcpy (out->shadername, in->shadername, sizeof (out->shadername));
                n = LittleLong(in->brushindex);
-               if (n < 0 || n >= loadmodel->brushq3.num_brushes)
-                       Host_Error("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes)\n", n, loadmodel->brushq3.num_brushes);
-               out->brush = loadmodel->brushq3.data_brushes + n;
+               if (n >= loadmodel->brush.num_brushes)
+               {
+                       Con_Printf("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes), setting to -1\n", n, loadmodel->brush.num_brushes);
+                       n = -1;
+               }
+               out->brushindex = n;
                out->unknown = LittleLong(in->unknown);
        }
 }
@@ -4044,17 +4255,14 @@ static void Mod_Q3BSP_LoadVertices(lump_t *l)
        q3dvertex_t *in;
        int i, count;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (q3dvertex_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q3BSP_LoadVertices: funny lump size in %s",loadmodel->name);
        loadmodel->brushq3.num_vertices = count = l->filelen / sizeof(*in);
-       loadmodel->brushq3.data_vertex3f = Mem_Alloc(loadmodel->mempool, count * (sizeof(float) * (3 + 2 + 2 + 3 + 3 + 3 + 4)));
+       loadmodel->brushq3.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, count * (sizeof(float) * (3 + 2 + 2 + 4)));
        loadmodel->brushq3.data_texcoordtexture2f = loadmodel->brushq3.data_vertex3f + count * 3;
        loadmodel->brushq3.data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordtexture2f + count * 2;
-       loadmodel->brushq3.data_svector3f = loadmodel->brushq3.data_texcoordlightmap2f + count * 2;
-       loadmodel->brushq3.data_tvector3f = loadmodel->brushq3.data_svector3f + count * 3;
-       loadmodel->brushq3.data_normal3f = loadmodel->brushq3.data_tvector3f + count * 3;
-       loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_normal3f + count * 3;
+       loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_texcoordlightmap2f + count * 2;
 
        for (i = 0;i < count;i++, in++)
        {
@@ -4066,15 +4274,6 @@ static void Mod_Q3BSP_LoadVertices(lump_t *l)
                loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 0] = LittleFloat(in->lightmap2f[0]);
                loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 1] = LittleFloat(in->lightmap2f[1]);
                // svector/tvector are calculated later in face loading
-               loadmodel->brushq3.data_svector3f[i * 3 + 0] = 0;
-               loadmodel->brushq3.data_svector3f[i * 3 + 1] = 0;
-               loadmodel->brushq3.data_svector3f[i * 3 + 2] = 0;
-               loadmodel->brushq3.data_tvector3f[i * 3 + 0] = 0;
-               loadmodel->brushq3.data_tvector3f[i * 3 + 1] = 0;
-               loadmodel->brushq3.data_tvector3f[i * 3 + 2] = 0;
-               loadmodel->brushq3.data_normal3f[i * 3 + 0] = LittleFloat(in->normal3f[0]);
-               loadmodel->brushq3.data_normal3f[i * 3 + 1] = LittleFloat(in->normal3f[1]);
-               loadmodel->brushq3.data_normal3f[i * 3 + 2] = LittleFloat(in->normal3f[2]);
                loadmodel->brushq3.data_color4f[i * 4 + 0] = in->color4ub[0] * (1.0f / 255.0f);
                loadmodel->brushq3.data_color4f[i * 4 + 1] = in->color4ub[1] * (1.0f / 255.0f);
                loadmodel->brushq3.data_color4f[i * 4 + 2] = in->color4ub[2] * (1.0f / 255.0f);
@@ -4088,15 +4287,14 @@ static void Mod_Q3BSP_LoadTriangles(lump_t *l)
        int *out;
        int i, count;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (int *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(int[3]))
                Host_Error("Mod_Q3BSP_LoadTriangles: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out) * 2);
+       out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
        loadmodel->brushq3.num_triangles = count / 3;
        loadmodel->brushq3.data_element3i = out;
-       loadmodel->brushq3.data_neighbor3i = out + count;
 
        for (i = 0;i < count;i++, in++, out++)
        {
@@ -4117,11 +4315,11 @@ static void Mod_Q3BSP_LoadLightmaps(lump_t *l)
 
        if (!l->filelen)
                return;
-       in = (void *)(mod_base + l->fileofs);
+       in = (q3dlightmap_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q3BSP_LoadLightmaps: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+       out = (rtexture_t **)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
        loadmodel->brushq3.data_lightmaps = out;
        loadmodel->brushq3.num_lightmaps = count;
@@ -4132,9 +4330,9 @@ static void Mod_Q3BSP_LoadLightmaps(lump_t *l)
 
 static void Mod_Q3BSP_LoadFaces(lump_t *l)
 {
-       q3dface_t *in;
-       q3msurface_t *out;
-       int i, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xtess, ytess, finalvertices, finaltriangles, firstvertex, firstelement, type, oldnumtriangles, oldnumtriangles2;
+       q3dface_t *in, *oldin;
+       msurface_t *out, *oldout;
+       int i, oldi, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xtess, ytess, finalvertices, finaltriangles, firstvertex, firstelement, type, oldnumtriangles, oldnumtriangles2, meshnum, meshvertices, meshtriangles, numvertices, numtriangles;
        //int *originalelement3i;
        //int *originalneighbor3i;
        float *originalvertex3f;
@@ -4145,381 +4343,345 @@ static void Mod_Q3BSP_LoadFaces(lump_t *l)
        float *originaltexcoordtexture2f;
        float *originaltexcoordlightmap2f;
        float *v;
+       surfmesh_t *mesh, *tempmeshlist[1024];
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (q3dface_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q3BSP_LoadFaces: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+       out = (msurface_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       loadmodel->brushq3.data_faces = out;
-       loadmodel->brushq3.num_faces = count;
+       loadmodel->data_surfaces = out;
+       loadmodel->num_surfaces = count;
 
-       for (i = 0;i < count;i++, in++, out++)
-       {
-               // check face type first
-               type = LittleLong(in->type);
-               if (type != Q3FACETYPE_POLYGON
-                && type != Q3FACETYPE_PATCH
-                && type != Q3FACETYPE_MESH
-                && type != Q3FACETYPE_FLARE)
+       i = 0;
+       for (meshnum = 0;i < count;meshnum++)
+       {
+               oldi = i;
+               oldin = in;
+               oldout = out;
+               meshvertices = 0;
+               meshtriangles = 0;
+               for (;i < count;i++, in++, out++)
                {
-                       Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, type);
-                       out->num_vertices = 0;
-                       out->num_triangles = 0;
-                       type = 0; // error
-                       continue;
-               }
+                       // check face type first
+                       type = LittleLong(in->type);
+                       if (type != Q3FACETYPE_POLYGON
+                        && type != Q3FACETYPE_PATCH
+                        && type != Q3FACETYPE_MESH
+                        && type != Q3FACETYPE_FLARE)
+                       {
+                               Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, type);
+                               continue;
+                       }
 
-               n = LittleLong(in->textureindex);
-               if (n < 0 || n >= loadmodel->brushq3.num_textures)
-               {
-                       Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->brushq3.num_textures);
-                       out->num_vertices = 0;
-                       out->num_triangles = 0;
-                       type = 0; // error
-                       continue;
-                       n = 0;
-               }
-               out->texture = loadmodel->brushq3.data_textures + n;
-               n = LittleLong(in->effectindex);
-               if (n < -1 || n >= loadmodel->brushq3.num_effects)
-               {
-                       if (developer.integer >= 2)
-                               Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
-                       n = -1;
-               }
-               if (n == -1)
-                       out->effect = NULL;
-               else
-                       out->effect = loadmodel->brushq3.data_effects + n;
-               n = LittleLong(in->lightmapindex);
-               if (n < -1 || n >= loadmodel->brushq3.num_lightmaps)
-               {
-                       Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_lightmaps);
-                       n = -1;
-               }
-               if (n == -1)
-                       out->lightmaptexture = NULL;
-               else
-                       out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n];
+                       n = LittleLong(in->textureindex);
+                       if (n < 0 || n >= loadmodel->num_textures)
+                       {
+                               Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->num_textures);
+                               continue;
+                       }
+                       out->texture = loadmodel->data_textures + n;
+                       n = LittleLong(in->effectindex);
+                       if (n < -1 || n >= loadmodel->brushq3.num_effects)
+                       {
+                               if (developer.integer >= 2)
+                                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
+                               n = -1;
+                       }
+                       if (n == -1)
+                               out->effect = NULL;
+                       else
+                               out->effect = loadmodel->brushq3.data_effects + n;
+                       n = LittleLong(in->lightmapindex);
+                       if (n >= loadmodel->brushq3.num_lightmaps)
+                       {
+                               Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_lightmaps);
+                               n = -1;
+                       }
+                       else if (n < 0)
+                               n = -1;
+                       if (n == -1)
+                               out->lightmaptexture = NULL;
+                       else
+                               out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n];
 
-               firstvertex = LittleLong(in->firstvertex);
-               out->num_vertices = LittleLong(in->numvertices);
-               firstelement = LittleLong(in->firstelement);
-               out->num_triangles = LittleLong(in->numelements) / 3;
-               if (out->num_triangles * 3 != LittleLong(in->numelements))
-               {
-                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): numelements %i is not a multiple of 3\n", i, out->texture->name, LittleLong(in->numelements));
-                       out->num_vertices = 0;
-                       out->num_triangles = 0;
-                       type = 0; // error
-                       continue;
-               }
-               if (firstvertex < 0 || firstvertex + out->num_vertices > loadmodel->brushq3.num_vertices)
-               {
-                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid vertex range %i : %i (%i vertices)\n", i, out->texture->name, firstvertex, firstvertex + out->num_vertices, loadmodel->brushq3.num_vertices);
-                       out->num_vertices = 0;
-                       out->num_triangles = 0;
-                       type = 0; // error
-                       continue;
-               }
-               if (firstelement < 0 || firstelement + out->num_triangles * 3 > loadmodel->brushq3.num_triangles * 3)
-               {
-                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid element range %i : %i (%i elements)\n", i, out->texture->name, firstelement, firstelement + out->num_triangles * 3, loadmodel->brushq3.num_triangles * 3);
-                       out->num_vertices = 0;
-                       out->num_triangles = 0;
-                       type = 0; // error
-                       continue;
-               }
-               switch(type)
-               {
-               case Q3FACETYPE_POLYGON:
-               case Q3FACETYPE_MESH:
-                       // no processing necessary
-                       out->data_vertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
-                       out->data_texcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + firstvertex * 2;
-                       out->data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + firstvertex * 2;
-                       out->data_svector3f = loadmodel->brushq3.data_svector3f + firstvertex * 3;
-                       out->data_tvector3f = loadmodel->brushq3.data_tvector3f + firstvertex * 3;
-                       out->data_normal3f = loadmodel->brushq3.data_normal3f + firstvertex * 3;
-                       out->data_color4f = loadmodel->brushq3.data_color4f + firstvertex * 4;
-                       out->data_element3i = loadmodel->brushq3.data_element3i + firstelement;
-                       out->data_neighbor3i = loadmodel->brushq3.data_neighbor3i + firstelement;
-                       break;
-               case Q3FACETYPE_PATCH:
-                       patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
-                       patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
-                       if (patchsize[0] < 3 || patchsize[1] < 3 || !(patchsize[0] & 1) || !(patchsize[1] & 1) || patchsize[0] * patchsize[1] >= min(r_subdivisions_maxvertices.integer, r_subdivisions_collision_maxvertices.integer))
+                       firstvertex = LittleLong(in->firstvertex);
+                       numvertices = LittleLong(in->numvertices);
+                       firstelement = LittleLong(in->firstelement);
+                       numtriangles = LittleLong(in->numelements) / 3;
+                       if (numtriangles * 3 != LittleLong(in->numelements))
                        {
-                               Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
-                               out->num_vertices = 0;
-                               out->num_triangles = 0;
-                               type = 0; // error
+                               Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): numelements %i is not a multiple of 3\n", i, out->texture->name, LittleLong(in->numelements));
                                continue;
                        }
-                       originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
-                       //originalsvector3f = loadmodel->brushq3.data_svector3f + firstvertex * 3;
-                       //originaltvector3f = loadmodel->brushq3.data_tvector3f + firstvertex * 3;
-                       //originalnormal3f = loadmodel->brushq3.data_normal3f + firstvertex * 3;
-                       originaltexcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + firstvertex * 2;
-                       originaltexcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + firstvertex * 2;
-                       originalcolor4f = loadmodel->brushq3.data_color4f + firstvertex * 4;
-                       //originalelement3i = loadmodel->brushq3.data_element3i + firstelement;
-                       //originalneighbor3i = loadmodel->brushq3.data_neighbor3i + firstelement;
-                       /*
-                       originalvertex3f = out->data_vertex3f;
-                       //originalsvector3f = out->data_svector3f;
-                       //originaltvector3f = out->data_tvector3f;
-                       //originalnormal3f = out->data_normal3f;
-                       originalcolor4f = out->data_color4f;
-                       originaltexcoordtexture2f = out->data_texcoordtexture2f;
-                       originaltexcoordlightmap2f = out->data_texcoordlightmap2f;
-                       //originalelement3i = out->data_element3i;
-                       //originalneighbor3i = out->data_neighbor3i;
-                       */
-                       // convert patch to Q3FACETYPE_MESH
-                       xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
-                       ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
-                       // bound to user settings
-                       xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
-                       ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
-                       // bound to sanity settings
-                       xtess = bound(1, xtess, 1024);
-                       ytess = bound(1, ytess, 1024);
-                       // bound to user limit on vertices
-                       while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
+                       if (firstvertex < 0 || firstvertex + numvertices > loadmodel->brushq3.num_vertices)
                        {
-                               if (xtess > ytess)
-                                       xtess--;
-                               else
-                                       ytess--;
+                               Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid vertex range %i : %i (%i vertices)\n", i, out->texture->name, firstvertex, firstvertex + numvertices, loadmodel->brushq3.num_vertices);
+                               continue;
                        }
-                       finalwidth = ((patchsize[0] - 1) * xtess) + 1;
-                       finalheight = ((patchsize[1] - 1) * ytess) + 1;
-                       finalvertices = finalwidth * finalheight;
-                       finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
-                       out->data_vertex3f = Mem_Alloc(loadmodel->mempool, sizeof(float[20]) * finalvertices);
-                       out->data_svector3f = out->data_vertex3f + finalvertices * 3;
-                       out->data_tvector3f = out->data_svector3f + finalvertices * 3;
-                       out->data_normal3f = out->data_tvector3f + finalvertices * 3;
-                       out->data_color4f = out->data_normal3f + finalvertices * 3;
-                       out->data_texcoordtexture2f = out->data_color4f + finalvertices * 4;
-                       out->data_texcoordlightmap2f = out->data_texcoordtexture2f + finalvertices * 2;
-                       out->data_element3i = Mem_Alloc(loadmodel->mempool, sizeof(int[6]) * finaltriangles);
-                       out->data_neighbor3i = out->data_element3i + finaltriangles * 3;
-                       type = Q3FACETYPE_MESH;
-                       firstvertex = -1;
-                       out->num_vertices = finalvertices;
-                       firstelement = -1;
-                       out->num_triangles = finaltriangles;
-                       // generate geometry
-                       // (note: normals are skipped because they get recalculated)
-                       Q3PatchTesselateFloat(3, sizeof(float[3]), out->data_vertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
-                       Q3PatchTesselateFloat(2, sizeof(float[2]), out->data_texcoordtexture2f, patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordtexture2f, xtess, ytess);
-                       Q3PatchTesselateFloat(2, sizeof(float[2]), out->data_texcoordlightmap2f, patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordlightmap2f, xtess, ytess);
-                       Q3PatchTesselateFloat(4, sizeof(float[4]), out->data_color4f, patchsize[0], patchsize[1], sizeof(float[4]), originalcolor4f, xtess, ytess);
-                       Q3PatchTriangleElements(out->data_element3i, finalwidth, finalheight);
-                       if (developer.integer >= 2)
+                       if (firstelement < 0 || firstelement + numtriangles * 3 > loadmodel->brushq3.num_triangles * 3)
                        {
-                               if (out->num_triangles < finaltriangles)
-                                       Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles, %i degenerate triangles removed (leaving %i)\n", patchsize[0], patchsize[1], out->num_vertices, finaltriangles, finaltriangles - out->num_triangles, out->num_triangles);
-                               else
-                                       Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles\n", patchsize[0], patchsize[1], out->num_vertices, out->num_triangles);
+                               Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid element range %i : %i (%i elements)\n", i, out->texture->name, firstelement, firstelement + numtriangles * 3, loadmodel->brushq3.num_triangles * 3);
+                               continue;
                        }
-                       // q3map does not put in collision brushes for curves... ugh
-                       // build the lower quality collision geometry
-                       xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
-                       ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
-                       // bound to user settings
-                       xtess = bound(r_subdivisions_collision_mintess.integer, xtess, r_subdivisions_collision_maxtess.integer);
-                       ytess = bound(r_subdivisions_collision_mintess.integer, ytess, r_subdivisions_collision_maxtess.integer);
-                       // bound to sanity settings
-                       xtess = bound(1, xtess, 1024);
-                       ytess = bound(1, ytess, 1024);
-                       // bound to user limit on vertices
-                       while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_collision_maxvertices.integer, 262144))
+                       switch(type)
                        {
-                               if (xtess > ytess)
-                                       xtess--;
-                               else
-                                       ytess--;
+                       case Q3FACETYPE_POLYGON:
+                       case Q3FACETYPE_MESH:
+                               // no processing necessary
+                               break;
+                       case Q3FACETYPE_PATCH:
+                               patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
+                               patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
+                               if (numvertices != (patchsize[0] * patchsize[1]) || patchsize[0] < 3 || patchsize[1] < 3 || !(patchsize[0] & 1) || !(patchsize[1] & 1) || patchsize[0] * patchsize[1] >= min(r_subdivisions_maxvertices.integer, r_subdivisions_collision_maxvertices.integer))
+                               {
+                                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
+                                       continue;
+                               }
+                               originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
+                               // convert patch to Q3FACETYPE_MESH
+                               xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
+                               ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
+                               // bound to user settings
+                               xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
+                               ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
+                               // bound to sanity settings
+                               xtess = bound(1, xtess, 1024);
+                               ytess = bound(1, ytess, 1024);
+                               // bound to user limit on vertices
+                               while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
+                               {
+                                       if (xtess > ytess)
+                                               xtess--;
+                                       else
+                                               ytess--;
+                               }
+                               finalwidth = ((patchsize[0] - 1) * xtess) + 1;
+                               finalheight = ((patchsize[1] - 1) * ytess) + 1;
+                               numvertices = finalwidth * finalheight;
+                               numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
+                               break;
+                       case Q3FACETYPE_FLARE:
+                               if (developer.integer >= 2)
+                                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
+                               // don't render it
+                               continue;
+                       }
+                       out->num_vertices = numvertices;
+                       out->num_triangles = numtriangles;
+                       if (meshvertices + out->num_vertices > 65536)
+                               break;
+                       meshvertices += out->num_vertices;
+                       meshtriangles += out->num_triangles;
+               }
+
+               i = oldi;
+               in = oldin;
+               out = oldout;
+               mesh = tempmeshlist[meshnum] = Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, false, true, false);
+               meshvertices = 0;
+               meshtriangles = 0;
+               for (;i < count && meshvertices + out->num_vertices <= mesh->num_vertices;i++, in++, out++)
+               {
+                       if (out->num_vertices < 3 || out->num_triangles < 1)
+                               continue;
+
+                       type = LittleLong(in->type);
+                       firstvertex = LittleLong(in->firstvertex);
+                       firstelement = LittleLong(in->firstelement);
+                       out->groupmesh = mesh;
+                       out->num_firstvertex = meshvertices;
+                       out->num_firsttriangle = meshtriangles;
+                       switch(type)
+                       {
+                       case Q3FACETYPE_POLYGON:
+                       case Q3FACETYPE_MESH:
+                               // no processing necessary
+                               for (j = 0;j < out->num_vertices;j++)
+                               {
+                                       (out->groupmesh->data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 0];
+                                       (out->groupmesh->data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 1];
+                                       (out->groupmesh->data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 2];
+                                       (out->groupmesh->data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 0];
+                                       (out->groupmesh->data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 1];
+                                       (out->groupmesh->data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 0];
+                                       (out->groupmesh->data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 1];
+                                       (out->groupmesh->data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 0] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 0];
+                                       (out->groupmesh->data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 1] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 1];
+                                       (out->groupmesh->data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 2] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 2];
+                                       (out->groupmesh->data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 3] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 3];
+                               }
+                               for (j = 0;j < out->num_triangles*3;j++)
+                                       (out->groupmesh->data_element3i + 3 * out->num_firsttriangle)[j] = loadmodel->brushq3.data_element3i[firstelement + j] + out->num_firstvertex;
+                               break;
+                       case Q3FACETYPE_PATCH:
+                               patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
+                               patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
+                               originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
+                               originaltexcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + firstvertex * 2;
+                               originaltexcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + firstvertex * 2;
+                               originalcolor4f = loadmodel->brushq3.data_color4f + firstvertex * 4;
+                               // convert patch to Q3FACETYPE_MESH
+                               xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
+                               ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
+                               // bound to user settings
+                               xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
+                               ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
+                               // bound to sanity settings
+                               xtess = bound(1, xtess, 1024);
+                               ytess = bound(1, ytess, 1024);
+                               // bound to user limit on vertices
+                               while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
+                               {
+                                       if (xtess > ytess)
+                                               xtess--;
+                                       else
+                                               ytess--;
+                               }
+                               finalwidth = ((patchsize[0] - 1) * xtess) + 1;
+                               finalheight = ((patchsize[1] - 1) * ytess) + 1;
+                               finalvertices = finalwidth * finalheight;
+                               finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
+                               type = Q3FACETYPE_MESH;
+                               // generate geometry
+                               // (note: normals are skipped because they get recalculated)
+                               Q3PatchTesselateFloat(3, sizeof(float[3]), (out->groupmesh->data_vertex3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
+                               Q3PatchTesselateFloat(2, sizeof(float[2]), (out->groupmesh->data_texcoordtexture2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordtexture2f, xtess, ytess);
+                               Q3PatchTesselateFloat(2, sizeof(float[2]), (out->groupmesh->data_texcoordlightmap2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordlightmap2f, xtess, ytess);
+                               Q3PatchTesselateFloat(4, sizeof(float[4]), (out->groupmesh->data_lightmapcolor4f + 4 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[4]), originalcolor4f, xtess, ytess);
+                               Q3PatchTriangleElements((out->groupmesh->data_element3i + 3 * out->num_firsttriangle), finalwidth, finalheight, out->num_firstvertex);
+                               out->num_triangles = Mod_RemoveDegenerateTriangles(out->num_triangles, (out->groupmesh->data_element3i + 3 * out->num_firsttriangle), (out->groupmesh->data_element3i + 3 * out->num_firsttriangle), out->groupmesh->data_vertex3f);
+                               if (developer.integer >= 2)
+                               {
+                                       if (out->num_triangles < finaltriangles)
+                                               Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles, %i degenerate triangles removed (leaving %i)\n", patchsize[0], patchsize[1], out->num_vertices, finaltriangles, finaltriangles - out->num_triangles, out->num_triangles);
+                                       else
+                                               Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles\n", patchsize[0], patchsize[1], out->num_vertices, out->num_triangles);
+                               }
+                               // q3map does not put in collision brushes for curves... ugh
+                               // build the lower quality collision geometry
+                               xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
+                               ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
+                               // bound to user settings
+                               xtess = bound(r_subdivisions_collision_mintess.integer, xtess, r_subdivisions_collision_maxtess.integer);
+                               ytess = bound(r_subdivisions_collision_mintess.integer, ytess, r_subdivisions_collision_maxtess.integer);
+                               // bound to sanity settings
+                               xtess = bound(1, xtess, 1024);
+                               ytess = bound(1, ytess, 1024);
+                               // bound to user limit on vertices
+                               while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_collision_maxvertices.integer, 262144))
+                               {
+                                       if (xtess > ytess)
+                                               xtess--;
+                                       else
+                                               ytess--;
+                               }
+                               finalwidth = ((patchsize[0] - 1) * xtess) + 1;
+                               finalheight = ((patchsize[1] - 1) * ytess) + 1;
+                               finalvertices = finalwidth * finalheight;
+                               finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
+
+                               out->data_collisionvertex3f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * finalvertices);
+                               out->data_collisionelement3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * finaltriangles);
+                               out->num_collisionvertices = finalvertices;
+                               out->num_collisiontriangles = finaltriangles;
+                               Q3PatchTesselateFloat(3, sizeof(float[3]), out->data_collisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
+                               Q3PatchTriangleElements(out->data_collisionelement3i, finalwidth, finalheight, 0);
+
+                               //Mod_SnapVertices(3, out->num_vertices, (out->groupmesh->data_vertex3f + 3 * out->num_firstvertex), 0.25);
+                               Mod_SnapVertices(3, out->num_collisionvertices, out->data_collisionvertex3f, 1);
+
+                               oldnumtriangles = out->num_triangles;
+                               oldnumtriangles2 = out->num_collisiontriangles;
+                               out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(out->num_collisiontriangles, out->data_collisionelement3i, out->data_collisionelement3i, out->data_collisionvertex3f);
+                               if (developer.integer)
+                                       Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve became %i:%i vertices / %i:%i triangles (%i:%i degenerate)\n", patchsize[0], patchsize[1], out->num_vertices, out->num_collisionvertices, oldnumtriangles, oldnumtriangles2, oldnumtriangles - out->num_triangles, oldnumtriangles2 - out->num_collisiontriangles);
+                               break;
+                       default:
+                               break;
                        }
-                       finalwidth = ((patchsize[0] - 1) * xtess) + 1;
-                       finalheight = ((patchsize[1] - 1) * ytess) + 1;
-                       finalvertices = finalwidth * finalheight;
-                       finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
-
-                       out->data_collisionvertex3f = Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * finalvertices);
-                       out->data_collisionelement3i = Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * finaltriangles);
-                       out->num_collisionvertices = finalvertices;
-                       out->num_collisiontriangles = finaltriangles;
-                       Q3PatchTesselateFloat(3, sizeof(float[3]), out->data_collisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
-                       Q3PatchTriangleElements(out->data_collisionelement3i, finalwidth, finalheight);
-
-                       Mod_SnapVertices(3, out->num_vertices, out->data_vertex3f, 0.25);
-                       Mod_SnapVertices(3, out->num_collisionvertices, out->data_collisionvertex3f, 1);
-
-                       oldnumtriangles = out->num_triangles;
-                       oldnumtriangles2 = out->num_collisiontriangles;
-                       out->num_triangles = Mod_RemoveDegenerateTriangles(out->num_triangles, out->data_element3i, out->data_element3i, out->data_vertex3f);
-                       out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(out->num_collisiontriangles, out->data_collisionelement3i, out->data_collisionelement3i, out->data_collisionvertex3f);
-                       if (developer.integer)
-                               Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve became %i:%i vertices / %i:%i triangles (%i:%i degenerate)\n", patchsize[0], patchsize[1], out->num_vertices, out->num_collisionvertices, oldnumtriangles, oldnumtriangles2, oldnumtriangles - out->num_triangles, oldnumtriangles2 - out->num_collisiontriangles);
-                       break;
-               case Q3FACETYPE_FLARE:
-                       if (developer.integer >= 2)
-                               Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
-                       // don't render it
-                       out->num_vertices = 0;
-                       out->num_triangles = 0;
-                       type = 0;
-                       break;
-               }
-               for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
-                       if (out->data_element3i[j] < 0 || out->data_element3i[j] >= out->num_vertices)
-                               invalidelements++;
-               if (invalidelements)
-               {
-                       Con_Printf("Mod_Q3BSP_LoadFaces: Warning: face #%i has %i invalid elements, type = %i, texture->name = \"%s\", texture->surfaceflags = %i, texture->nativecontents = %i, firstvertex = %i, numvertices = %i, firstelement = %i, numelements = %i, elements list:\n", i, invalidelements, type, out->texture->name, out->texture->surfaceflags, out->texture->nativecontents, firstvertex, out->num_vertices, firstelement, out->num_triangles * 3);
-                       for (j = 0;j < out->num_triangles * 3;j++)
+                       meshvertices += out->num_vertices;
+                       meshtriangles += out->num_triangles;
+                       for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
+                               if ((out->groupmesh->data_element3i + 3 * out->num_firsttriangle)[j] < out->num_firstvertex || (out->groupmesh->data_element3i + 3 * out->num_firsttriangle)[j] >= out->num_firstvertex + out->num_vertices)
+                                       invalidelements++;
+                       if (invalidelements)
                        {
-                               Con_Printf(" %i", out->data_element3i[j]);
-                               if (out->data_element3i[j] < 0 || out->data_element3i[j] >= out->num_vertices)
-                                       out->data_element3i[j] = 0;
+                               Con_Printf("Mod_Q3BSP_LoadFaces: Warning: face #%i has %i invalid elements, type = %i, texture->name = \"%s\", texture->surfaceflags = %i, firstvertex = %i, numvertices = %i, firstelement = %i, numelements = %i, elements list:\n", i, invalidelements, type, out->texture->name, out->texture->surfaceflags, firstvertex, out->num_vertices, firstelement, out->num_triangles * 3);
+                               for (j = 0;j < out->num_triangles * 3;j++)
+                               {
+                                       Con_Printf(" %i", (out->groupmesh->data_element3i + 3 * out->num_firsttriangle)[j] - out->num_firstvertex);
+                                       if ((out->groupmesh->data_element3i + 3 * out->num_firsttriangle)[j] < out->num_firstvertex || (out->groupmesh->data_element3i + 3 * out->num_firsttriangle)[j] >= out->num_firstvertex + out->num_vertices)
+                                               (out->groupmesh->data_element3i + 3 * out->num_firsttriangle)[j] = out->num_firstvertex;
+                               }
+                               Con_Print("\n");
                        }
-                       Con_Print("\n");
-               }
-               // for shadow volumes
-               Mod_BuildTriangleNeighbors(out->data_neighbor3i, out->data_element3i, out->num_triangles);
-               // for per pixel lighting
-               Mod_BuildTextureVectorsAndNormals(out->num_vertices, out->num_triangles, out->data_vertex3f, out->data_texcoordtexture2f, out->data_element3i, out->data_svector3f, out->data_tvector3f, out->data_normal3f);
-               // calculate a bounding box
-               VectorClear(out->mins);
-               VectorClear(out->maxs);
-               if (out->num_vertices)
-               {
-                       VectorCopy(out->data_vertex3f, out->mins);
-                       VectorCopy(out->data_vertex3f, out->maxs);
-                       for (j = 1, v = out->data_vertex3f + 3;j < out->num_vertices;j++, v += 3)
+                       // for per pixel lighting
+                       Mod_BuildTextureVectorsAndNormals(out->num_firstvertex, out->num_vertices, out->num_triangles, out->groupmesh->data_vertex3f, out->groupmesh->data_texcoordtexture2f, (out->groupmesh->data_element3i + 3 * out->num_firsttriangle), out->groupmesh->data_svector3f, out->groupmesh->data_tvector3f, out->groupmesh->data_normal3f, true);
+                       // calculate a bounding box
+                       VectorClear(out->mins);
+                       VectorClear(out->maxs);
+                       if (out->num_vertices)
                        {
-                               out->mins[0] = min(out->mins[0], v[0]);
-                               out->maxs[0] = max(out->maxs[0], v[0]);
-                               out->mins[1] = min(out->mins[1], v[1]);
-                               out->maxs[1] = max(out->maxs[1], v[1]);
-                               out->mins[2] = min(out->mins[2], v[2]);
-                               out->maxs[2] = max(out->maxs[2], v[2]);
+                               VectorCopy((out->groupmesh->data_vertex3f + 3 * out->num_firstvertex), out->mins);
+                               VectorCopy((out->groupmesh->data_vertex3f + 3 * out->num_firstvertex), out->maxs);
+                               for (j = 1, v = (out->groupmesh->data_vertex3f + 3 * out->num_firstvertex) + 3;j < out->num_vertices;j++, v += 3)
+                               {
+                                       out->mins[0] = min(out->mins[0], v[0]);
+                                       out->maxs[0] = max(out->maxs[0], v[0]);
+                                       out->mins[1] = min(out->mins[1], v[1]);
+                                       out->maxs[1] = max(out->maxs[1], v[1]);
+                                       out->mins[2] = min(out->mins[2], v[2]);
+                                       out->maxs[2] = max(out->maxs[2], v[2]);
+                               }
+                               out->mins[0] -= 1.0f;
+                               out->mins[1] -= 1.0f;
+                               out->mins[2] -= 1.0f;
+                               out->maxs[0] += 1.0f;
+                               out->maxs[1] += 1.0f;
+                               out->maxs[2] += 1.0f;
                        }
-                       out->mins[0] -= 1.0f;
-                       out->mins[1] -= 1.0f;
-                       out->mins[2] -= 1.0f;
-                       out->maxs[0] += 1.0f;
-                       out->maxs[1] += 1.0f;
-                       out->maxs[2] += 1.0f;
+                       // set lightmap styles for consistency with q1bsp
+                       //out->lightmapinfo->styles[0] = 0;
+                       //out->lightmapinfo->styles[1] = 255;
+                       //out->lightmapinfo->styles[2] = 255;
+                       //out->lightmapinfo->styles[3] = 255;
                }
        }
 
-       // LordHavoc: experimental array merger (disabled because it wastes time and uses 2x memory while merging)
-       /*
-       {
-       int totalverts, totaltris;
-       int originalnum_vertices;
-       float *originaldata_vertex3f;
-       float *originaldata_texcoordtexture2f;
-       float *originaldata_texcoordlightmap2f;
-       float *originaldata_svector3f;
-       float *originaldata_tvector3f;
-       float *originaldata_normal3f;
-       float *originaldata_color4f;
-       int originalnum_triangles;
-       int *originaldata_element3i;
-       int *originaldata_neighbor3i;
-
-       totalverts = 0;
-       totaltris = 0;
-       for (i = 0, out = loadmodel->brushq3.data_faces;i < count;i++, out++)
-       {
-               if (!out->type)
-                       continue;
-               totalverts += out->num_vertices;
-               totaltris += out->num_triangles;
-       }
-
-       originalnum_vertices = loadmodel->brushq3.num_vertices;
-       originaldata_vertex3f = loadmodel->brushq3.data_vertex3f;
-       originaldata_texcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f;
-       originaldata_texcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f;
-       originaldata_svector3f = loadmodel->brushq3.data_svector3f;
-       originaldata_tvector3f = loadmodel->brushq3.data_tvector3f;
-       originaldata_normal3f = loadmodel->brushq3.data_normal3f;
-       originaldata_color4f = loadmodel->brushq3.data_color4f;
-       originalnum_triangles = loadmodel->brushq3.num_triangles;
-       originaldata_element3i = loadmodel->brushq3.data_element3i;
-       originaldata_neighbor3i = loadmodel->brushq3.data_neighbor3i;
-       loadmodel->brushq3.num_vertices = totalverts;
-       loadmodel->brushq3.data_vertex3f = Mem_Alloc(loadmodel->mempool, totalverts * (sizeof(float) * (3 + 2 + 2 + 3 + 3 + 3 + 4)) + totaltris * (sizeof(int) * (3 * 2)));
-       loadmodel->brushq3.data_texcoordtexture2f = loadmodel->brushq3.data_vertex3f + totalverts * 3;
-       loadmodel->brushq3.data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordtexture2f + totalverts * 2;
-       loadmodel->brushq3.data_svector3f = loadmodel->brushq3.data_texcoordlightmap2f + totalverts * 2;
-       loadmodel->brushq3.data_tvector3f = loadmodel->brushq3.data_svector3f + totalverts * 3;
-       loadmodel->brushq3.data_normal3f = loadmodel->brushq3.data_tvector3f + totalverts * 3;
-       loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_normal3f + totalverts * 3;
-       loadmodel->brushq3.num_triangles = totaltris;
-       loadmodel->brushq3.data_element3i = (int *)(loadmodel->brushq3.data_color4f + totalverts * 4);
-       loadmodel->brushq3.data_neighbor3i = loadmodel->brushq3.data_element3i + totaltris * 3;
-       totalverts = 0;
-       totaltris = 0;
-       for (i = 0, out = loadmodel->brushq3.data_faces;i < count;i++, out++)
+       // now store the completed list of meshes
+       loadmodel->nummeshes = meshnum;
+       if (loadmodel->nummeshes)
        {
-               if (!out->type)
-                       continue;
-               Con_Printf("totalverts %i, totaltris %i\n", totalverts, totaltris);
-               memcpy(loadmodel->brushq3.data_vertex3f + totalverts * 3, out->data_vertex3f, out->num_vertices * 3 * sizeof(float));
-               memcpy(loadmodel->brushq3.data_texcoordtexture2f + totalverts * 2, out->data_texcoordtexture2f, out->num_vertices * 2 * sizeof(float));
-               memcpy(loadmodel->brushq3.data_texcoordlightmap2f + totalverts * 2, out->data_texcoordlightmap2f, out->num_vertices * 2 * sizeof(float));
-               memcpy(loadmodel->brushq3.data_svector3f + totalverts * 3, out->data_svector3f, out->num_vertices * 3 * sizeof(float));
-               memcpy(loadmodel->brushq3.data_tvector3f + totalverts * 3, out->data_tvector3f, out->num_vertices * 3 * sizeof(float));
-               memcpy(loadmodel->brushq3.data_normal3f + totalverts * 3, out->data_normal3f, out->num_vertices * 3 * sizeof(float));
-               memcpy(loadmodel->brushq3.data_color4f + totalverts * 4, out->data_color4f, out->num_vertices * 4 * sizeof(float));
-               memcpy(loadmodel->brushq3.data_element3i + totaltris * 3, out->data_element3i, out->num_triangles * 3 * sizeof(int));
-               memcpy(loadmodel->brushq3.data_neighbor3i + totaltris * 3, out->data_neighbor3i, out->num_triangles * 3 * sizeof(int));
-               if (out->firstvertex == -1)
-                       Mem_Free(out->data_vertex3f);
-               if (out->firstelement == -1)
-                       Mem_Free(out->data_element3i);
-               out->firstvertex = totalverts;
-               out->data_vertex3f = loadmodel->brushq3.data_vertex3f + out->firstvertex * 3;
-               out->data_texcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + out->firstvertex * 2;
-               out->data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + out->firstvertex * 2;
-               out->data_svector3f = loadmodel->brushq3.data_svector3f + out->firstvertex * 3;
-               out->data_tvector3f = loadmodel->brushq3.data_tvector3f + out->firstvertex * 3;
-               out->data_normal3f = loadmodel->brushq3.data_normal3f + out->firstvertex * 3;
-               out->data_color4f = loadmodel->brushq3.data_color4f + out->firstvertex * 4;
-               out->firstelement = totaltris * 3;
-               out->data_element3i = loadmodel->brushq3.data_element3i + out->firstelement;
-               out->data_neighbor3i = loadmodel->brushq3.data_neighbor3i + out->firstelement;
-               //for (j = 0;j < out->numtriangles * 3;j++)
-               //      out->data_element3i[j] += totalverts - out->firstvertex;
-               totalverts += out->num_vertices;
-               totaltris += out->num_triangles;
-       }
-       Mem_Free(originaldata_vertex3f);
-       Mem_Free(originaldata_element3i);
+               loadmodel->meshlist = (surfmesh_t **)Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t *) * loadmodel->nummeshes);
+               memcpy(loadmodel->meshlist, tempmeshlist, sizeof(surfmesh_t *) * loadmodel->nummeshes);
        }
-       */
+
+       // free the no longer needed vertex data
+       loadmodel->brushq3.num_vertices = 0;
+       Mem_Free(loadmodel->brushq3.data_vertex3f);
+       loadmodel->brushq3.data_vertex3f = NULL;
+       loadmodel->brushq3.data_texcoordtexture2f = NULL;
+       loadmodel->brushq3.data_texcoordlightmap2f = NULL;
+       loadmodel->brushq3.data_color4f = NULL;
+       // free the no longer needed triangle data
+       loadmodel->brushq3.num_triangles = 0;
+       Mem_Free(loadmodel->brushq3.data_element3i);
+       loadmodel->brushq3.data_element3i = NULL;
 }
 
 static void Mod_Q3BSP_LoadModels(lump_t *l)
 {
        q3dmodel_t *in;
-       q3mmodel_t *out;
+       q3dmodel_t *out;
        int i, j, n, c, count;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (q3dmodel_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q3BSP_LoadModels: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+       out = (q3dmodel_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
        loadmodel->brushq3.data_models = out;
        loadmodel->brushq3.num_models = count;
@@ -4533,15 +4695,15 @@ static void Mod_Q3BSP_LoadModels(lump_t *l)
                }
                n = LittleLong(in->firstface);
                c = LittleLong(in->numfaces);
-               if (n < 0 || n + c > loadmodel->brushq3.num_faces)
-                       Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)\n", n, n + c, loadmodel->brushq3.num_faces);
-               out->firstface = loadmodel->brushq3.data_faces + n;
+               if (n < 0 || n + c > loadmodel->num_surfaces)
+                       Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)\n", n, n + c, loadmodel->num_surfaces);
+               out->firstface = n;
                out->numfaces = c;
                n = LittleLong(in->firstbrush);
                c = LittleLong(in->numbrushes);
-               if (n < 0 || n + c > loadmodel->brushq3.num_brushes)
-                       Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)\n", n, n + c, loadmodel->brushq3.num_brushes);
-               out->firstbrush = loadmodel->brushq3.data_brushes + n;
+               if (n < 0 || n + c > loadmodel->brush.num_brushes)
+                       Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)\n", n, n + c, loadmodel->brush.num_brushes);
+               out->firstbrush = n;
                out->numbrushes = c;
        }
 }
@@ -4549,68 +4711,65 @@ static void Mod_Q3BSP_LoadModels(lump_t *l)
 static void Mod_Q3BSP_LoadLeafBrushes(lump_t *l)
 {
        int *in;
-       q3mbrush_t **out;
+       int *out;
        int i, n, count;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (int *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q3BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+       out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       loadmodel->brushq3.data_leafbrushes = out;
-       loadmodel->brushq3.num_leafbrushes = count;
+       loadmodel->brush.data_leafbrushes = out;
+       loadmodel->brush.num_leafbrushes = count;
 
        for (i = 0;i < count;i++, in++, out++)
        {
                n = LittleLong(*in);
-               if (n < 0 || n >= loadmodel->brushq3.num_brushes)
-                       Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)\n", n, loadmodel->brushq3.num_brushes);
-               *out = loadmodel->brushq3.data_brushes + n;
+               if (n < 0 || n >= loadmodel->brush.num_brushes)
+                       Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)\n", n, loadmodel->brush.num_brushes);
+               *out = n;
        }
 }
 
 static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
 {
        int *in;
-       q3msurface_t **out;
+       int *out;
        int i, n, count;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (int *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q3BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
-
-       loadmodel->brushq3.data_leaffaces = out;
-       loadmodel->brushq3.num_leaffaces = count;
+       out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       loadmodel->brushq3.data_leaffacenums = Mem_Alloc(loadmodel->mempool, count * sizeof(int));
+       loadmodel->brush.data_leafsurfaces = out;
+       loadmodel->brush.num_leafsurfaces = count;
 
        for (i = 0;i < count;i++, in++, out++)
        {
                n = LittleLong(*in);
-               if (n < 0 || n >= loadmodel->brushq3.num_faces)
-                       Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)\n", n, loadmodel->brushq3.num_faces);
-               *out = loadmodel->brushq3.data_faces + n;
-               loadmodel->brushq3.data_leaffacenums[i] = n;
+               if (n < 0 || n >= loadmodel->num_surfaces)
+                       Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)\n", n, loadmodel->num_surfaces);
+               *out = n;
        }
 }
 
 static void Mod_Q3BSP_LoadLeafs(lump_t *l)
 {
        q3dleaf_t *in;
-       q3mleaf_t *out;
+       mleaf_t *out;
        int i, j, n, c, count;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (q3dleaf_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q3BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+       out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       loadmodel->brushq3.data_leafs = out;
-       loadmodel->brushq3.num_leafs = count;
+       loadmodel->brush.data_leafs = out;
+       loadmodel->brush.num_leafs = count;
 
        for (i = 0;i < count;i++, in++, out++)
        {
@@ -4626,69 +4785,56 @@ static void Mod_Q3BSP_LoadLeafs(lump_t *l)
                }
                n = LittleLong(in->firstleafface);
                c = LittleLong(in->numleaffaces);
-               if (n < 0 || n + c > loadmodel->brushq3.num_leaffaces)
-                       Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafface range %i : %i (%i leaffaces)\n", n, n + c, loadmodel->brushq3.num_leaffaces);
-               out->firstleafface = loadmodel->brushq3.data_leaffaces + n;
-               out->firstleaffacenum = loadmodel->brushq3.data_leaffacenums + n;
-               out->numleaffaces = c;
+               if (n < 0 || n + c > loadmodel->brush.num_leafsurfaces)
+                       Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafsurface range %i : %i (%i leafsurfaces)\n", n, n + c, loadmodel->brush.num_leafsurfaces);
+               out->firstleafsurface = loadmodel->brush.data_leafsurfaces + n;
+               out->numleafsurfaces = c;
                n = LittleLong(in->firstleafbrush);
                c = LittleLong(in->numleafbrushes);
-               if (n < 0 || n + c > loadmodel->brushq3.num_leafbrushes)
-                       Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafbrush range %i : %i (%i leafbrushes)\n", n, n + c, loadmodel->brushq3.num_leafbrushes);
-               out->firstleafbrush = loadmodel->brushq3.data_leafbrushes + n;
+               if (n < 0 || n + c > loadmodel->brush.num_leafbrushes)
+                       Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafbrush range %i : %i (%i leafbrushes)\n", n, n + c, loadmodel->brush.num_leafbrushes);
+               out->firstleafbrush = loadmodel->brush.data_leafbrushes + n;
                out->numleafbrushes = c;
        }
 }
 
-static void Mod_Q3BSP_LoadNodes_RecursiveSetParent(q3mnode_t *node, q3mnode_t *parent)
-{
-       if (node->parent)
-               Host_Error("Mod_Q3BSP_LoadNodes_RecursiveSetParent: runaway recursion\n");
-       node->parent = parent;
-       if (node->plane)
-       {
-               Mod_Q3BSP_LoadNodes_RecursiveSetParent(node->children[0], node);
-               Mod_Q3BSP_LoadNodes_RecursiveSetParent(node->children[1], node);
-       }
-}
-
 static void Mod_Q3BSP_LoadNodes(lump_t *l)
 {
        q3dnode_t *in;
-       q3mnode_t *out;
+       mnode_t *out;
        int i, j, n, count;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (q3dnode_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q3BSP_LoadNodes: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+       out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       loadmodel->brushq3.data_nodes = out;
-       loadmodel->brushq3.num_nodes = count;
+       loadmodel->brush.data_nodes = out;
+       loadmodel->brush.num_nodes = count;
 
        for (i = 0;i < count;i++, in++, out++)
        {
                out->parent = NULL;
                n = LittleLong(in->planeindex);
-               if (n < 0 || n >= loadmodel->brushq3.num_planes)
-                       Host_Error("Mod_Q3BSP_LoadNodes: invalid planeindex %i (%i planes)\n", n, loadmodel->brushq3.num_planes);
-               out->plane = loadmodel->brushq3.data_planes + n;
+               if (n < 0 || n >= loadmodel->brush.num_planes)
+                       Host_Error("Mod_Q3BSP_LoadNodes: invalid planeindex %i (%i planes)\n", n, loadmodel->brush.num_planes);
+               out->plane = loadmodel->brush.data_planes + n;
                for (j = 0;j < 2;j++)
                {
                        n = LittleLong(in->childrenindex[j]);
                        if (n >= 0)
                        {
-                               if (n >= loadmodel->brushq3.num_nodes)
-                                       Host_Error("Mod_Q3BSP_LoadNodes: invalid child node index %i (%i nodes)\n", n, loadmodel->brushq3.num_nodes);
-                               out->children[j] = loadmodel->brushq3.data_nodes + n;
+                               if (n >= loadmodel->brush.num_nodes)
+                                       Host_Error("Mod_Q3BSP_LoadNodes: invalid child node index %i (%i nodes)\n", n, loadmodel->brush.num_nodes);
+                               out->children[j] = loadmodel->brush.data_nodes + n;
                        }
                        else
                        {
                                n = -1 - n;
-                               if (n >= loadmodel->brushq3.num_leafs)
-                                       Host_Error("Mod_Q3BSP_LoadNodes: invalid child leaf index %i (%i leafs)\n", n, loadmodel->brushq3.num_leafs);
-                               out->children[j] = (q3mnode_t *)(loadmodel->brushq3.data_leafs + n);
+                               if (n >= loadmodel->brush.num_leafs)
+                                       Host_Error("Mod_Q3BSP_LoadNodes: invalid child leaf index %i (%i leafs)\n", n, loadmodel->brush.num_leafs);
+                               out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + n);
                        }
                }
                for (j = 0;j < 3;j++)
@@ -4700,7 +4846,7 @@ static void Mod_Q3BSP_LoadNodes(lump_t *l)
        }
 
        // set the parent pointers
-       Mod_Q3BSP_LoadNodes_RecursiveSetParent(loadmodel->brushq3.data_nodes, NULL);
+       Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);
 }
 
 static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
@@ -4709,7 +4855,7 @@ static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
        q3dlightgrid_t *out;
        int count;
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (q3dlightgrid_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q3BSP_LoadLightGrid: funny lump size in %s",loadmodel->name);
        loadmodel->brushq3.num_lightgrid_scale[0] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[0];
@@ -4725,40 +4871,22 @@ static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
        loadmodel->brushq3.num_lightgrid_isize[1] = loadmodel->brushq3.num_lightgrid_imaxs[1] - loadmodel->brushq3.num_lightgrid_imins[1] + 1;
        loadmodel->brushq3.num_lightgrid_isize[2] = loadmodel->brushq3.num_lightgrid_imaxs[2] - loadmodel->brushq3.num_lightgrid_imins[2] + 1;
        count = loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2];
+       Matrix4x4_CreateScale3(&loadmodel->brushq3.num_lightgrid_indexfromworld, loadmodel->brushq3.num_lightgrid_scale[0], loadmodel->brushq3.num_lightgrid_scale[1], loadmodel->brushq3.num_lightgrid_scale[2]);
+       Matrix4x4_ConcatTranslate(&loadmodel->brushq3.num_lightgrid_indexfromworld, -loadmodel->brushq3.num_lightgrid_imins[0] * loadmodel->brushq3.num_lightgrid_cellsize[0], -loadmodel->brushq3.num_lightgrid_imins[1] * loadmodel->brushq3.num_lightgrid_cellsize[1], -loadmodel->brushq3.num_lightgrid_imins[2] * loadmodel->brushq3.num_lightgrid_cellsize[2]);
+
+       // if lump is empty there is nothing to load, we can deal with that in the LightPoint code
        if (l->filelen)
        {
                if (l->filelen < count * (int)sizeof(*in))
                        Host_Error("Mod_Q3BSP_LoadLightGrid: invalid lightgrid lump size %i bytes, should be %i bytes (%ix%ix%i)\n", l->filelen, count * sizeof(*in), loadmodel->brushq3.num_lightgrid_dimensions[0], loadmodel->brushq3.num_lightgrid_dimensions[1], loadmodel->brushq3.num_lightgrid_dimensions[2]);
                if (l->filelen != count * (int)sizeof(*in))
                        Con_Printf("Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i\n", count * sizeof(*in), l->filelen);
-       }
-
-       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
-       loadmodel->brushq3.data_lightgrid = out;
-       loadmodel->brushq3.num_lightgrid = count;
-
-       // no swapping or validation necessary
-       if (l->filelen)
+               out = (q3dlightgrid_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+               loadmodel->brushq3.data_lightgrid = out;
+               loadmodel->brushq3.num_lightgrid = count;
+               // no swapping or validation necessary
                memcpy(out, in, count * (int)sizeof(*out));
-       else
-       {
-               // no data, fill with white
-               int i;
-               for (i = 0;i < count;i++)
-               {
-                       out[i].ambientrgb[0] = 128;
-                       out[i].ambientrgb[1] = 128;
-                       out[i].ambientrgb[2] = 128;
-                       out[i].diffusergb[0] = 0;
-                       out[i].diffusergb[1] = 0;
-                       out[i].diffusergb[2] = 0;
-                       out[i].diffusepitch = 0;
-                       out[i].diffuseyaw = 0;
-               }
        }
-
-       Matrix4x4_CreateScale3(&loadmodel->brushq3.num_lightgrid_indexfromworld, loadmodel->brushq3.num_lightgrid_scale[0], loadmodel->brushq3.num_lightgrid_scale[1], loadmodel->brushq3.num_lightgrid_scale[2]);
-       Matrix4x4_ConcatTranslate(&loadmodel->brushq3.num_lightgrid_indexfromworld, -loadmodel->brushq3.num_lightgrid_imins[0] * loadmodel->brushq3.num_lightgrid_cellsize[0], -loadmodel->brushq3.num_lightgrid_imins[1] * loadmodel->brushq3.num_lightgrid_cellsize[1], -loadmodel->brushq3.num_lightgrid_imins[2] * loadmodel->brushq3.num_lightgrid_cellsize[2]);
 }
 
 static void Mod_Q3BSP_LoadPVS(lump_t *l)
@@ -4772,18 +4900,18 @@ static void Mod_Q3BSP_LoadPVS(lump_t *l)
                // unvised maps often have cluster indices even without pvs, so check
                // leafs to find real number of clusters
                loadmodel->brush.num_pvsclusters = 1;
-               for (i = 0;i < loadmodel->brushq3.num_leafs;i++)
-                       loadmodel->brush.num_pvsclusters = min(loadmodel->brush.num_pvsclusters, loadmodel->brushq3.data_leafs[i].clusterindex + 1);
+               for (i = 0;i < loadmodel->brush.num_leafs;i++)
+                       loadmodel->brush.num_pvsclusters = max(loadmodel->brush.num_pvsclusters, loadmodel->brush.data_leafs[i].clusterindex + 1);
 
                // create clusters
                loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters + 7) / 8;
                totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
-               loadmodel->brush.data_pvsclusters = Mem_Alloc(loadmodel->mempool, totalchains);
+               loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
                memset(loadmodel->brush.data_pvsclusters, 0xFF, totalchains);
                return;
        }
 
-       in = (void *)(mod_base + l->fileofs);
+       in = (q3dpvs_t *)(mod_base + l->fileofs);
        if (l->filelen < 9)
                Host_Error("Mod_Q3BSP_LoadPVS: funny lump size in %s",loadmodel->name);
 
@@ -4795,14 +4923,8 @@ static void Mod_Q3BSP_LoadPVS(lump_t *l)
        if (l->filelen < totalchains + (int)sizeof(*in))
                Host_Error("Mod_Q3BSP_LoadPVS: lump too small ((numclusters = %i) * (chainlength = %i) + sizeof(q3dpvs_t) == %i bytes, lump is %i bytes)\n", loadmodel->brush.num_pvsclusters, loadmodel->brush.num_pvsclusterbytes, totalchains + sizeof(*in), l->filelen);
 
-       loadmodel->brush.data_pvsclusters = Mem_Alloc(loadmodel->mempool, totalchains);
-       memcpy(loadmodel->brush.data_pvsclusters, (qbyte *)(in + 1), totalchains);
-}
-
-static void Mod_Q3BSP_FindNonSolidLocation(model_t *model, const vec3_t in, vec3_t out, vec_t radius)
-{
-       // FIXME: finish this code
-       VectorCopy(in, out);
+       loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
+       memcpy(loadmodel->brush.data_pvsclusters, (unsigned char *)(in + 1), totalchains);
 }
 
 static void Mod_Q3BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
@@ -4810,7 +4932,6 @@ static void Mod_Q3BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientc
        int i, j, k, index[3];
        float transformed[3], blend1, blend2, blend, yaw, pitch, sinpitch;
        q3dlightgrid_t *a, *s;
-       // FIXME: write this
        if (!model->brushq3.num_lightgrid)
        {
                ambientcolor[0] = 1;
@@ -4863,34 +4984,34 @@ static void Mod_Q3BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientc
        //Con_Printf("result: ambient %f %f %f diffuse %f %f %f diffusenormal %f %f %f\n", ambientcolor[0], ambientcolor[1], ambientcolor[2], diffusecolor[0], diffusecolor[1], diffusecolor[2], diffusenormal[0], diffusenormal[1], diffusenormal[2]);
 }
 
-static void Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace_t *trace, q3mnode_t *node, const vec3_t point, int markframe)
+static void Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace_t *trace, model_t *model, mnode_t *node, const vec3_t point, int markframe)
 {
        int i;
-       q3mleaf_t *leaf;
+       mleaf_t *leaf;
        colbrushf_t *brush;
        // find which leaf the point is in
        while (node->plane)
                node = node->children[DotProduct(point, node->plane->normal) < node->plane->dist];
        // point trace the brushes
-       leaf = (q3mleaf_t *)node;
+       leaf = (mleaf_t *)node;
        for (i = 0;i < leaf->numleafbrushes;i++)
        {
-               brush = leaf->firstleafbrush[i]->colbrushf;
+               brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
                if (brush && brush->markframe != markframe && BoxesOverlap(point, point, brush->mins, brush->maxs))
                {
                        brush->markframe = markframe;
-                       Collision_TracePointBrushFloat(trace, point, leaf->firstleafbrush[i]->colbrushf);
+                       Collision_TracePointBrushFloat(trace, point, brush);
                }
        }
        // can't do point traces on curves (they have no thickness)
 }
 
-static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, q3mnode_t *node, const vec3_t start, const vec3_t end, vec_t startfrac, vec_t endfrac, const vec3_t linestart, const vec3_t lineend, int markframe, const vec3_t segmentmins, const vec3_t segmentmaxs)
+static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, model_t *model, mnode_t *node, const vec3_t start, const vec3_t end, vec_t startfrac, vec_t endfrac, const vec3_t linestart, const vec3_t lineend, int markframe, const vec3_t segmentmins, const vec3_t segmentmaxs)
 {
        int i, startside, endside;
        float dist1, dist2, midfrac, mid[3], nodesegmentmins[3], nodesegmentmaxs[3];
-       q3mleaf_t *leaf;
-       q3msurface_t *face;
+       mleaf_t *leaf;
+       msurface_t *surface;
        colbrushf_t *brush;
        if (startfrac > trace->realfraction)
                return;
@@ -4922,9 +5043,9 @@ static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, q3mnode_t *node
                                midfrac = dist1 / (dist1 - dist2);
                                VectorLerp(start, midfrac, end, mid);
                                // take the near side first
-                               Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, node->children[startside], start, mid, startfrac, midfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
+                               Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[startside], start, mid, startfrac, midfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
                                if (midfrac <= trace->realfraction)
-                                       Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, node->children[endside], mid, end, midfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
+                                       Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[endside], mid, end, midfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
                                return;
                        }
                }
@@ -4937,14 +5058,14 @@ static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, q3mnode_t *node
        nodesegmentmaxs[1] = max(start[1], end[1]);
        nodesegmentmaxs[2] = max(start[2], end[2]);
        // line trace the brushes
-       leaf = (q3mleaf_t *)node;
+       leaf = (mleaf_t *)node;
        for (i = 0;i < leaf->numleafbrushes;i++)
        {
-               brush = leaf->firstleafbrush[i]->colbrushf;
+               brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
                if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
                {
                        brush->markframe = markframe;
-                       Collision_TraceLineBrushFloat(trace, linestart, lineend, leaf->firstleafbrush[i]->colbrushf, leaf->firstleafbrush[i]->colbrushf);
+                       Collision_TraceLineBrushFloat(trace, linestart, lineend, brush, brush);
                        if (startfrac > trace->realfraction)
                                return;
                }
@@ -4953,13 +5074,13 @@ static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, q3mnode_t *node
        if (mod_q3bsp_curves_collisions.integer && !VectorCompare(start, end))
        {
                // line trace the curves
-               for (i = 0;i < leaf->numleaffaces;i++)
+               for (i = 0;i < leaf->numleafsurfaces;i++)
                {
-                       face = leaf->firstleafface[i];
-                       if (face->num_collisiontriangles && face->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, face->mins, face->maxs))
+                       surface = model->data_surfaces + leaf->firstleafsurface[i];
+                       if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
                        {
-                               face->collisionmarkframe = markframe;
-                               Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, face->num_collisiontriangles, face->data_collisionelement3i, face->data_collisionvertex3f, face->texture->supercontents, segmentmins, segmentmaxs);
+                               surface->collisionmarkframe = markframe;
+                               Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, segmentmins, segmentmaxs);
                                if (startfrac > trace->realfraction)
                                        return;
                        }
@@ -4967,14 +5088,14 @@ static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, q3mnode_t *node
        }
 }
 
-static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, q3mnode_t *node, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int markframe, const vec3_t segmentmins, const vec3_t segmentmaxs)
+static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, model_t *model, mnode_t *node, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int markframe, const vec3_t segmentmins, const vec3_t segmentmaxs)
 {
        int i;
-       //int sides;
+       int sides;
        float nodesegmentmins[3], nodesegmentmaxs[3];
-       q3mleaf_t *leaf;
+       mleaf_t *leaf;
        colbrushf_t *brush;
-       q3msurface_t *face;
+       msurface_t *surface;
        /*
                // find which nodes the line is in and recurse for them
                while (node->plane)
@@ -5044,7 +5165,7 @@ static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, q3mnode_t *nod
                        if (dist1near >= 0 && dist2near >= 0 && dist1far <  0 && dist2far >= 0){node = node->children[0];continue;}
                        if (dist1near >= 0 && dist2near >= 0 && dist1far >= 0 && dist2far <  0){node = node->children[0];continue;}
                        if (dist1near >= 0 && dist2near >= 0 && dist1far >= 0 && dist2far >= 0){node = node->children[0];continue;}
-                       {             
+                       {
                                if (dist2near < 0) // d1n<0 && d2n<0
                                {
                                        if (dist2near < 0) // d1n<0 && d2n<0
@@ -5193,6 +5314,57 @@ static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, q3mnode_t *nod
 #if 1
        for (;;)
        {
+               mplane_t *plane = node->plane;
+               if (!plane)
+                       break;
+               // axial planes are much more common than non-axial, so an optimized
+               // axial case pays off here
+               if (plane->type < 3)
+               {
+                       // this is an axial plane, compare bounding box directly to it and
+                       // recurse sides accordingly
+                       // recurse down node sides
+                       // use an inlined axial BoxOnPlaneSide to slightly reduce overhead
+                       //sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, plane);
+                       sides = ((segmentmaxs[plane->type] >= plane->dist) | ((segmentmins[plane->type] < plane->dist) << 1));
+                       if (sides == 3)
+                       {
+                               // segment box crosses plane
+                               Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
+                               sides = 2;
+                       }
+               }
+               else
+               {
+                       // this is a non-axial plane, entire trace bounding box
+                       // comparisons against it are likely to be very sloppy, so in if
+                       // the whole box is split by the plane we then test the start/end
+                       // boxes against it to be sure
+                       sides = BoxOnPlaneSide(segmentmins, segmentmaxs, plane);
+                       if (sides == 3)
+                       {
+                               // segment box crosses plane
+                               // now check start and end brush boxes to handle a lot of 'diagonal' cases more efficiently...
+                               sides = BoxOnPlaneSide(thisbrush_start->mins, thisbrush_start->maxs, plane) | BoxOnPlaneSide(thisbrush_end->mins, thisbrush_end->maxs, plane);
+                               if (sides == 3)
+                               {
+                                       Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
+                                       sides = 2;
+                               }
+                       }
+               }
+               // take whichever side the segment box is on
+               node = node->children[sides - 1];
+       }
+       nodesegmentmins[0] = max(segmentmins[0], node->mins[0]);
+       nodesegmentmins[1] = max(segmentmins[1], node->mins[1]);
+       nodesegmentmins[2] = max(segmentmins[2], node->mins[2]);
+       nodesegmentmaxs[0] = min(segmentmaxs[0], node->maxs[0]);
+       nodesegmentmaxs[1] = min(segmentmaxs[1], node->maxs[1]);
+       nodesegmentmaxs[2] = min(segmentmaxs[2], node->maxs[2]);
+#elif 1
+       for (;;)
+       {
                nodesegmentmins[0] = max(segmentmins[0], node->mins[0]);
                nodesegmentmins[1] = max(segmentmins[1], node->mins[1]);
                nodesegmentmins[2] = max(segmentmins[2], node->mins[2]);
@@ -5203,7 +5375,7 @@ static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, q3mnode_t *nod
                        return;
                if (!node->plane)
                        break;
-               Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
+               Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
                node = node->children[1];
        }
 #elif 0
@@ -5321,25 +5493,25 @@ static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, q3mnode_t *nod
        }
 #endif
        // hit a leaf
-       leaf = (q3mleaf_t *)node;
+       leaf = (mleaf_t *)node;
        for (i = 0;i < leaf->numleafbrushes;i++)
        {
-               brush = leaf->firstleafbrush[i]->colbrushf;
+               brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
                if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
                {
                        brush->markframe = markframe;
-                       Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, leaf->firstleafbrush[i]->colbrushf, leaf->firstleafbrush[i]->colbrushf);
+                       Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush, brush);
                }
        }
        if (mod_q3bsp_curves_collisions.integer)
        {
-               for (i = 0;i < leaf->numleaffaces;i++)
+               for (i = 0;i < leaf->numleafsurfaces;i++)
                {
-                       face = leaf->firstleafface[i];
-                       if (face->num_collisiontriangles && face->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, face->mins, face->maxs))
+                       surface = model->data_surfaces + leaf->firstleafsurface[i];
+                       if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
                        {
-                               face->collisionmarkframe = markframe;
-                               Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, face->num_collisiontriangles, face->data_collisionelement3i, face->data_collisionvertex3f, face->texture->supercontents, segmentmins, segmentmaxs);
+                               surface->collisionmarkframe = markframe;
+                               Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, segmentmins, segmentmaxs);
                        }
                }
        }
@@ -5352,7 +5524,8 @@ static void Mod_Q3BSP_TraceBox(model_t *model, int frame, trace_t *trace, const
        colbrushf_t *thisbrush_start, *thisbrush_end;
        matrix4x4_t startmatrix, endmatrix;
        static int markframe = 0;
-       q3msurface_t *face;
+       msurface_t *surface;
+       q3mbrush_t *brush;
        memset(trace, 0, sizeof(*trace));
        trace->fraction = 1;
        trace->realfraction = 1;
@@ -5370,35 +5543,30 @@ static void Mod_Q3BSP_TraceBox(model_t *model, int frame, trace_t *trace, const
                if (VectorCompare(boxstartmins, boxendmins))
                {
                        // point trace
-                       if (model->brushq3.submodel)
+                       if (model->brush.submodel)
                        {
-                               for (i = 0;i < model->brushq3.data_thismodel->numbrushes;i++)
-                                       if (model->brushq3.data_thismodel->firstbrush[i].colbrushf)
-                                               Collision_TracePointBrushFloat(trace, boxstartmins, model->brushq3.data_thismodel->firstbrush[i].colbrushf);
+                               for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
+                                       if (brush->colbrushf)
+                                               Collision_TracePointBrushFloat(trace, boxstartmins, brush->colbrushf);
                        }
                        else
-                               Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace, model->brushq3.data_nodes, boxstartmins, ++markframe);
+                               Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace, model, model->brush.data_nodes, boxstartmins, ++markframe);
                }
                else
                {
                        // line trace
-                       if (model->brushq3.submodel)
+                       if (model->brush.submodel)
                        {
-                               for (i = 0;i < model->brushq3.data_thismodel->numbrushes;i++)
-                                       if (model->brushq3.data_thismodel->firstbrush[i].colbrushf)
-                                               Collision_TraceLineBrushFloat(trace, boxstartmins, boxendmins, model->brushq3.data_thismodel->firstbrush[i].colbrushf, model->brushq3.data_thismodel->firstbrush[i].colbrushf);
+                               for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
+                                       if (brush->colbrushf)
+                                               Collision_TraceLineBrushFloat(trace, boxstartmins, boxendmins, brush->colbrushf, brush->colbrushf);
                                if (mod_q3bsp_curves_collisions.integer)
-                               {
-                                       for (i = 0;i < model->brushq3.data_thismodel->numfaces;i++)
-                                       {
-                                               face = model->brushq3.data_thismodel->firstface + i;
-                                               if (face->num_collisiontriangles)
-                                                       Collision_TraceLineTriangleMeshFloat(trace, boxstartmins, boxendmins, face->num_collisiontriangles, face->data_collisionelement3i, face->data_collisionvertex3f, face->texture->supercontents, segmentmins, segmentmaxs);
-                                       }
-                               }
+                                       for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
+                                               if (surface->num_collisiontriangles)
+                                                       Collision_TraceLineTriangleMeshFloat(trace, boxstartmins, boxendmins, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, segmentmins, segmentmaxs);
                        }
                        else
-                               Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model->brushq3.data_nodes, boxstartmins, boxendmins, 0, 1, boxstartmins, boxendmins, ++markframe, segmentmins, segmentmaxs);
+                               Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, model->brush.data_nodes, boxstartmins, boxendmins, 0, 1, boxstartmins, boxendmins, ++markframe, segmentmins, segmentmaxs);
                }
        }
        else
@@ -5406,150 +5574,44 @@ static void Mod_Q3BSP_TraceBox(model_t *model, int frame, trace_t *trace, const
                // box trace, performed as brush trace
                thisbrush_start = Collision_BrushForBox(&startmatrix, boxstartmins, boxstartmaxs);
                thisbrush_end = Collision_BrushForBox(&endmatrix, boxendmins, boxendmaxs);
-               if (model->brushq3.submodel)
+               if (model->brush.submodel)
                {
-                       for (i = 0;i < model->brushq3.data_thismodel->numbrushes;i++)
-                               if (model->brushq3.data_thismodel->firstbrush[i].colbrushf)
-                                       Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, model->brushq3.data_thismodel->firstbrush[i].colbrushf, model->brushq3.data_thismodel->firstbrush[i].colbrushf);
+                       for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
+                               if (brush->colbrushf)
+                                       Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush->colbrushf, brush->colbrushf);
                        if (mod_q3bsp_curves_collisions.integer)
-                       {
-                               for (i = 0;i < model->brushq3.data_thismodel->numfaces;i++)
-                               {
-                                       face = model->brushq3.data_thismodel->firstface + i;
-                                       if (face->num_collisiontriangles)
-                                               Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, face->num_collisiontriangles, face->data_collisionelement3i, face->data_collisionvertex3f, face->texture->supercontents, segmentmins, segmentmaxs);
-                               }
-                       }
-               }
-               else
-                       Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model->brushq3.data_nodes, thisbrush_start, thisbrush_end, ++markframe, segmentmins, segmentmaxs);
-       }
-}
-
-static int Mod_Q3BSP_BoxTouchingPVS(model_t *model, const qbyte *pvs, const vec3_t mins, const vec3_t maxs)
-{
-       int clusterindex, side, nodestackindex = 0;
-       q3mnode_t *node, *nodestack[1024];
-       node = model->brushq3.data_nodes;
-       if (!model->brush.num_pvsclusters)
-               return true;
-       for (;;)
-       {
-               if (node->plane)
-               {
-                       // node - recurse down the BSP tree
-                       side = BoxOnPlaneSide(mins, maxs, node->plane) - 1;
-                       if (side < 2)
-                       {
-                               // box is on one side of plane, take that path
-                               node = node->children[side];
-                       }
-                       else
-                       {
-                               // box crosses plane, take one path and remember the other
-                               if (nodestackindex < 1024)
-                                       nodestack[nodestackindex++] = node->children[0];
-                               node = node->children[1];
-                       }
-               }
-               else
-               {
-                       // leaf - check cluster bit
-                       clusterindex = ((q3mleaf_t *)node)->clusterindex;
-#if 0
-                       if (clusterindex >= model->brush.num_pvsclusters)
-                       {
-                               Con_Printf("%i >= %i\n", clusterindex, model->brush.num_pvsclusters);
-                               return true;
-                       }
-#endif
-                       if (CHECKPVSBIT(pvs, clusterindex))
-                       {
-                               // it is visible, return immediately with the news
-                               return true;
-                       }
-                       else
-                       {
-                               // nothing to see here, try another path we didn't take earlier
-                               if (nodestackindex == 0)
-                                       break;
-                               node = nodestack[--nodestackindex];
-                       }
+                               for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
+                                       if (surface->num_collisiontriangles)
+                                               Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, segmentmins, segmentmaxs);
                }
-       }
-       // it is not visible
-       return false;
-}
-
-//Returns PVS data for a given point
-//(note: can return NULL)
-static qbyte *Mod_Q3BSP_GetPVS(model_t *model, const vec3_t p)
-{
-       q3mnode_t *node;
-       Mod_CheckLoaded(model);
-       node = model->brushq3.data_nodes;
-       while (node->plane)
-               node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
-       if (((q3mleaf_t *)node)->clusterindex >= 0)
-               return model->brush.data_pvsclusters + ((q3mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
-       else
-               return NULL;
-}
-
-static void Mod_Q3BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org, vec_t radius, qbyte *pvsbuffer, int pvsbytes, q3mnode_t *node)
-{
-       while (node->plane)
-       {
-               float d = PlaneDiff(org, node->plane);
-               if (d > radius)
-                       node = node->children[0];
-               else if (d < -radius)
-                       node = node->children[1];
                else
-               {
-                       // go down both sides
-                       Mod_Q3BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, pvsbytes, node->children[0]);
-                       node = node->children[1];
-               }
-       }
-       // if this leaf is in a cluster, accumulate the pvs bits
-       if (((q3mleaf_t *)node)->clusterindex >= 0)
-       {
-               int i;
-               qbyte *pvs = model->brush.data_pvsclusters + ((q3mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
-               for (i = 0;i < pvsbytes;i++)
-                       pvsbuffer[i] |= pvs[i];
-       }
-}
-
-//Calculates a PVS that is the inclusive or of all leafs within radius pixels
-//of the given point.
-static int Mod_Q3BSP_FatPVS(model_t *model, const vec3_t org, vec_t radius, qbyte *pvsbuffer, int pvsbufferlength)
-{
-       int bytes = model->brush.num_pvsclusterbytes;
-       bytes = min(bytes, pvsbufferlength);
-       if (r_novis.integer || !model->brush.num_pvsclusters || !Mod_Q3BSP_GetPVS(model, org))
-       {
-               memset(pvsbuffer, 0xFF, bytes);
-               return bytes;
+                       Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, model->brush.data_nodes, thisbrush_start, thisbrush_end, ++markframe, segmentmins, segmentmaxs);
        }
-       memset(pvsbuffer, 0, bytes);
-       Mod_Q3BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brushq3.data_nodes);
-       return bytes;
 }
 
-
 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents)
 {
        int supercontents = 0;
-       if (nativecontents & Q2CONTENTS_SOLID)
+       if (nativecontents & CONTENTSQ3_SOLID)
                supercontents |= SUPERCONTENTS_SOLID;
-       if (nativecontents & Q2CONTENTS_WATER)
+       if (nativecontents & CONTENTSQ3_WATER)
                supercontents |= SUPERCONTENTS_WATER;
-       if (nativecontents & Q2CONTENTS_SLIME)
+       if (nativecontents & CONTENTSQ3_SLIME)
                supercontents |= SUPERCONTENTS_SLIME;
-       if (nativecontents & Q2CONTENTS_LAVA)
+       if (nativecontents & CONTENTSQ3_LAVA)
                supercontents |= SUPERCONTENTS_LAVA;
+       if (nativecontents & CONTENTSQ3_BODY)
+               supercontents |= SUPERCONTENTS_BODY;
+       if (nativecontents & CONTENTSQ3_CORPSE)
+               supercontents |= SUPERCONTENTS_CORPSE;
+       if (nativecontents & CONTENTSQ3_NODROP)
+               supercontents |= SUPERCONTENTS_NODROP;
+       if (nativecontents & CONTENTSQ3_PLAYERCLIP)
+               supercontents |= SUPERCONTENTS_PLAYERCLIP;
+       if (nativecontents & CONTENTSQ3_MONSTERCLIP)
+               supercontents |= SUPERCONTENTS_MONSTERCLIP;
+       if (nativecontents & CONTENTSQ3_DONOTENTER)
+               supercontents |= SUPERCONTENTS_DONOTENTER;
        return supercontents;
 }
 
@@ -5557,104 +5619,29 @@ static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int superco
 {
        int nativecontents = 0;
        if (supercontents & SUPERCONTENTS_SOLID)
-               nativecontents |= Q2CONTENTS_SOLID;
+               nativecontents |= CONTENTSQ3_SOLID;
        if (supercontents & SUPERCONTENTS_WATER)
-               nativecontents |= Q2CONTENTS_WATER;
+               nativecontents |= CONTENTSQ3_WATER;
        if (supercontents & SUPERCONTENTS_SLIME)
-               nativecontents |= Q2CONTENTS_SLIME;
+               nativecontents |= CONTENTSQ3_SLIME;
        if (supercontents & SUPERCONTENTS_LAVA)
-               nativecontents |= Q2CONTENTS_LAVA;
+               nativecontents |= CONTENTSQ3_LAVA;
+       if (supercontents & SUPERCONTENTS_BODY)
+               nativecontents |= CONTENTSQ3_BODY;
+       if (supercontents & SUPERCONTENTS_CORPSE)
+               nativecontents |= CONTENTSQ3_CORPSE;
+       if (supercontents & SUPERCONTENTS_NODROP)
+               nativecontents |= CONTENTSQ3_NODROP;
+       if (supercontents & SUPERCONTENTS_PLAYERCLIP)
+               nativecontents |= CONTENTSQ3_PLAYERCLIP;
+       if (supercontents & SUPERCONTENTS_MONSTERCLIP)
+               nativecontents |= CONTENTSQ3_MONSTERCLIP;
+       if (supercontents & SUPERCONTENTS_DONOTENTER)
+               nativecontents |= CONTENTSQ3_DONOTENTER;
        return nativecontents;
 }
 
-/*
-void Mod_Q3BSP_RecursiveGetVisible(q3mnode_t *node, model_t *model, const vec3_t point, const vec3_t mins, const vec3_t maxs, int maxleafs, q3mleaf_t *leaflist, int *numleafs, int maxsurfaces, q3msurface_t *surfacelist, int *numsurfaces, const qbyte *pvs)
-{
-       mleaf_t *leaf;
-       for (;;)
-       {
-               if (!BoxesOverlap(node->mins, node->maxs, mins, maxs))
-                       return;
-               if (!node->plane)
-                       break;
-               Mod_Q3BSP_RecursiveGetVisible(node->children[0], model, point, mins, maxs, maxleafs, leaflist, numleafs, maxsurfaces, surfacelist, numsurfaces, pvs);
-               node = node->children[1];
-       }
-       leaf = (mleaf_t *)node;
-       if ((pvs == NULL || CHECKPVSBIT(pvs, leaf->clusterindex)))
-       {
-               int marksurfacenum;
-               q3msurface_t *surf;
-               if (maxleafs && *numleafs < maxleafs)
-                       leaflist[(*numleaf)++] = leaf;
-               if (maxsurfaces)
-               {
-                       for (marksurfacenum = 0;marksurfacenum < leaf->nummarksurfaces;marksurfacenum++)
-                       {
-                               face = leaf->firstleafface[marksurfacenum];
-                               if (face->shadowmark != shadowmarkcount)
-                               {
-                                       face->shadowmark = shadowmarkcount;
-                                       if (BoxesOverlap(mins, maxs, face->mins, face->maxs) && *numsurfaces < maxsurfaces)
-                                               surfacelist[(*numsurfaces)++] = face;
-                               }
-                       }
-               }
-       }
-}
-
-void Mod_Q3BSP_GetVisible(model_t *model, const vec3_t point, const vec3_t mins, const vec3_t maxs, int maxleafs, q3mleaf_t *leaflist, int *numleafs, int maxsurfaces, q3msurface_t *surfacelist, int *numsurfaces)
-{
-       // FIXME: support portals
-       if (maxsurfaces)
-               *numsurfaces = 0;
-       if (maxleafs)
-               *numleafs = 0;
-       if (model->submodel)
-       {
-               if (maxsurfaces)
-               {
-                       for (marksurfacenum = 0;marksurfacenum < leaf->nummarksurfaces;marksurfacenum++)
-                       {
-                               face = ent->model->brushq3.surfaces + leaf->firstmarksurface[marksurfacenum];
-                               if (BoxesOverlap(mins, maxs, face->mins, face->maxs) && *numsurfaces < maxsurfaces)
-                                       surfacelist[(*numsurfaces)++] = face;
-                       }
-               }
-       }
-       else
-       {
-               pvs = ent->model->brush.GetPVS(ent->model, relativelightorigin);
-               Mod_Q3BSP_RecursiveGetVisible(ent->model->brushq3.data_nodes, model, point, mins, maxs, maxleafs, leaflist, numleafs, maxsurfaces, surfacelist, numsurfaces, pvs);
-       }
-}
-*/
-
-void Mod_Q3BSP_BuildTextureFaceLists(void)
-{
-       int i, j;
-       loadmodel->brushq3.data_texturefaces = Mem_Alloc(loadmodel->mempool, loadmodel->nummodelsurfaces * sizeof(q3msurface_t *));
-       loadmodel->brushq3.data_texturefacenums = Mem_Alloc(loadmodel->mempool, loadmodel->nummodelsurfaces * sizeof(int));
-       for (i = 0;i < loadmodel->brushq3.num_textures;i++)
-               loadmodel->brushq3.data_textures[i].numfaces = 0;
-       for (i = 0;i < loadmodel->nummodelsurfaces;i++)
-               loadmodel->brushq3.data_faces[loadmodel->surfacelist[i]].texture->numfaces++;
-       j = 0;
-       for (i = 0;i < loadmodel->brushq3.num_textures;i++)
-       {
-               loadmodel->brushq3.data_textures[i].facelist = loadmodel->brushq3.data_texturefaces + j;
-               loadmodel->brushq3.data_textures[i].facenumlist = loadmodel->brushq3.data_texturefacenums + j;
-               j += loadmodel->brushq3.data_textures[i].numfaces;
-               loadmodel->brushq3.data_textures[i].numfaces = 0;
-       }
-       for (i = 0;i < loadmodel->nummodelsurfaces;i++)
-       {
-               loadmodel->brushq3.data_faces[loadmodel->surfacelist[i]].texture->facenumlist[loadmodel->brushq3.data_faces[loadmodel->surfacelist[i]].texture->numfaces] = loadmodel->surfacelist[i];
-               loadmodel->brushq3.data_faces[loadmodel->surfacelist[i]].texture->facelist[loadmodel->brushq3.data_faces[loadmodel->surfacelist[i]].texture->numfaces++] = loadmodel->brushq3.data_faces + loadmodel->surfacelist[i];
-       }
-}
-
-void Mod_Q3BSP_RecursiveFindNumLeafs(q3mnode_t *node)
+void Mod_Q3BSP_RecursiveFindNumLeafs(mnode_t *node)
 {
        int numleafs;
        while (node->plane)
@@ -5662,25 +5649,20 @@ void Mod_Q3BSP_RecursiveFindNumLeafs(q3mnode_t *node)
                Mod_Q3BSP_RecursiveFindNumLeafs(node->children[0]);
                node = node->children[1];
        }
-       numleafs = ((q3mleaf_t *)node - loadmodel->brushq3.data_leafs) + 1;
-       if (loadmodel->brushq3.num_leafs < numleafs)
-               loadmodel->brushq3.num_leafs = numleafs;
+       numleafs = ((mleaf_t *)node - loadmodel->brush.data_leafs) + 1;
+       if (loadmodel->brush.num_leafs < numleafs)
+               loadmodel->brush.num_leafs = numleafs;
 }
 
-extern void R_Q3BSP_DrawSky(struct entity_render_s *ent);
-extern void R_Q3BSP_Draw(struct entity_render_s *ent);
-extern void R_Q3BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, vec3_t outmins, vec3_t outmaxs, int *outclusterlist, qbyte *outclusterpvs, int *outnumclusterspointer, int *outsurfacelist, qbyte *outsurfacepvs, int *outnumsurfacespointer);
-extern void R_Q3BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist);
-extern void R_Q3BSP_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltolight, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz, rtexture_t *lightcubemap, int numsurfaces, const int *surfacelist);
-void Mod_Q3BSP_Load(model_t *mod, void *buffer)
+void Mod_Q3BSP_Load(model_t *mod, void *buffer, void *bufferend)
 {
        int i, j, numshadowmeshtriangles;
        q3dheader_t *header;
        float corner[3], yawradius, modelradius;
-       q3msurface_t *face;
+       msurface_t *surface;
 
        mod->type = mod_brushq3;
-       mod->numframes = 1;
+       mod->numframes = 2; // although alternate textures are not supported it is annoying to complain about no such frame 1
        mod->numskins = 1;
 
        header = (q3dheader_t *)buffer;
@@ -5688,25 +5670,34 @@ void Mod_Q3BSP_Load(model_t *mod, void *buffer)
        i = LittleLong(header->version);
        if (i != Q3BSPVERSION)
                Host_Error("Mod_Q3BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q3BSPVERSION);
-       if (mod->isworldmodel)
-               Cvar_SetValue("halflifebsp", false);
+       mod->brush.ishlbsp = false;
+       mod->brush.ismcbsp = false;
+       if (loadmodel->isworldmodel)
+       {
+               Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
+               Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
+       }
 
        mod->soundfromcenter = true;
        mod->TraceBox = Mod_Q3BSP_TraceBox;
        mod->brush.SuperContentsFromNativeContents = Mod_Q3BSP_SuperContentsFromNativeContents;
        mod->brush.NativeContentsFromSuperContents = Mod_Q3BSP_NativeContentsFromSuperContents;
-       mod->brush.GetPVS = Mod_Q3BSP_GetPVS;
-       mod->brush.FatPVS = Mod_Q3BSP_FatPVS;
-       mod->brush.BoxTouchingPVS = Mod_Q3BSP_BoxTouchingPVS;
+       mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
+       mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
+       mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
+       mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
+       mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
+       mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
        mod->brush.LightPoint = Mod_Q3BSP_LightPoint;
-       mod->brush.FindNonSolidLocation = Mod_Q3BSP_FindNonSolidLocation;
-       //mod->DrawSky = R_Q3BSP_DrawSky;
-       mod->Draw = R_Q3BSP_Draw;
-       mod->GetLightInfo = R_Q3BSP_GetLightInfo;
-       mod->DrawShadowVolume = R_Q3BSP_DrawShadowVolume;
-       mod->DrawLight = R_Q3BSP_DrawLight;
+       mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
+       mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
+       mod->Draw = R_Q1BSP_Draw;
+       mod->GetLightInfo = R_Q1BSP_GetLightInfo;
+       mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
+       mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
+       mod->DrawLight = R_Q1BSP_DrawLight;
 
-       mod_base = (qbyte *)header;
+       mod_base = (unsigned char *)header;
 
        // swap all the lumps
        header->ident = LittleLong(header->ident);
@@ -5736,24 +5727,36 @@ void Mod_Q3BSP_Load(model_t *mod, void *buffer)
        Mod_Q3BSP_LoadPVS(&header->lumps[Q3LUMP_PVS]);
        loadmodel->brush.numsubmodels = loadmodel->brushq3.num_models;
 
+       // the MakePortals code works fine on the q3bsp data as well
+       Mod_Q1BSP_MakePortals();
+
        // make a single combined shadow mesh to allow optimized shadow volume creation
        numshadowmeshtriangles = 0;
-       for (j = 0, face = loadmodel->brushq3.data_faces;j < loadmodel->brushq3.num_faces;j++, face++)
+       for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
        {
-               face->num_firstshadowmeshtriangle = numshadowmeshtriangles;
-               numshadowmeshtriangles += face->num_triangles;
+               surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
+               numshadowmeshtriangles += surface->num_triangles;
        }
        loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
-       for (j = 0, face = loadmodel->brushq3.data_faces;j < loadmodel->brushq3.num_faces;j++, face++)
-               Mod_ShadowMesh_AddMesh(loadmodel->mempool, loadmodel->brush.shadowmesh, NULL, NULL, NULL, face->data_vertex3f, NULL, NULL, NULL, NULL, face->num_triangles, face->data_element3i);
+       for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
+               if (surface->groupmesh)
+                       Mod_ShadowMesh_AddMesh(loadmodel->mempool, loadmodel->brush.shadowmesh, NULL, NULL, NULL, surface->groupmesh->data_vertex3f, NULL, NULL, NULL, NULL, surface->num_triangles, (surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle));
        loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true);
        Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
 
-       loadmodel->brushq3.num_leafs = 0;
-       Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brushq3.data_nodes);
+       loadmodel->brush.num_leafs = 0;
+       Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brush.data_nodes);
+
+       if (loadmodel->isworldmodel)
+       {
+               // clear out any stale submodels or worldmodels lying around
+               // if we did this clear before now, an error might abort loading and
+               // leave things in a bad state
+               Mod_RemoveStaleWorldModels(loadmodel);
+       }
 
        mod = loadmodel;
-       for (i = 0;i < loadmodel->brushq3.num_models;i++)
+       for (i = 0;i < loadmodel->brush.numsubmodels;i++)
        {
                if (i > 0)
                {
@@ -5774,20 +5777,25 @@ void Mod_Q3BSP_Load(model_t *mod, void *buffer)
                        mod->brush.GetPVS = NULL;
                        mod->brush.FatPVS = NULL;
                        mod->brush.BoxTouchingPVS = NULL;
+                       mod->brush.BoxTouchingLeafPVS = NULL;
+                       mod->brush.BoxTouchingVisibleLeafs = NULL;
+                       mod->brush.FindBoxClusters = NULL;
                        mod->brush.LightPoint = NULL;
-                       mod->brush.FindNonSolidLocation = Mod_Q3BSP_FindNonSolidLocation;
+                       mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
                }
-               mod->brushq3.data_thismodel = loadmodel->brushq3.data_models + i;
-               mod->brushq3.submodel = i;
+               mod->brush.submodel = i;
 
                // make the model surface list (used by shadowing/lighting)
-               mod->nummodelsurfaces = mod->brushq3.data_thismodel->numfaces;
-               mod->surfacelist = Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
+               mod->firstmodelsurface = mod->brushq3.data_models[i].firstface;
+               mod->nummodelsurfaces = mod->brushq3.data_models[i].numfaces;
+               mod->firstmodelbrush = mod->brushq3.data_models[i].firstbrush;
+               mod->nummodelbrushes = mod->brushq3.data_models[i].numbrushes;
+               mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
                for (j = 0;j < mod->nummodelsurfaces;j++)
-                       mod->surfacelist[j] = (mod->brushq3.data_thismodel->firstface - mod->brushq3.data_faces) + j;
+                       mod->surfacelist[j] = mod->firstmodelsurface + j;
 
-               VectorCopy(mod->brushq3.data_thismodel->mins, mod->normalmins);
-               VectorCopy(mod->brushq3.data_thismodel->maxs, mod->normalmaxs);
+               VectorCopy(mod->brushq3.data_models[i].mins, mod->normalmins);
+               VectorCopy(mod->brushq3.data_models[i].maxs, mod->normalmaxs);
                corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
                corner[1] = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
                corner[2] = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
@@ -5802,28 +5810,26 @@ void Mod_Q3BSP_Load(model_t *mod, void *buffer)
                mod->radius = modelradius;
                mod->radius2 = modelradius * modelradius;
 
-               for (j = 0;j < mod->brushq3.data_thismodel->numfaces;j++)
-                       if (mod->brushq3.data_thismodel->firstface[j].texture->surfaceflags & Q3SURFACEFLAG_SKY)
+               for (j = 0;j < mod->nummodelsurfaces;j++)
+                       if (mod->data_surfaces[j + mod->firstmodelsurface].texture->surfaceflags & Q3SURFACEFLAG_SKY)
                                break;
-               if (j < mod->brushq3.data_thismodel->numfaces)
-                       mod->DrawSky = R_Q3BSP_DrawSky;
+               if (j < mod->nummodelsurfaces)
+                       mod->DrawSky = R_Q1BSP_DrawSky;
        }
-
-       Mod_Q3BSP_BuildTextureFaceLists();
 }
 
-void Mod_IBSP_Load(model_t *mod, void *buffer)
+void Mod_IBSP_Load(model_t *mod, void *buffer, void *bufferend)
 {
        int i = LittleLong(((int *)buffer)[1]);
        if (i == Q3BSPVERSION)
-               Mod_Q3BSP_Load(mod,buffer);
+               Mod_Q3BSP_Load(mod,buffer, bufferend);
        else if (i == Q2BSPVERSION)
-               Mod_Q2BSP_Load(mod,buffer);
+               Mod_Q2BSP_Load(mod,buffer, bufferend);
        else
                Host_Error("Mod_IBSP_Load: unknown/unsupported version %i\n", i);
 }
 
-void Mod_MAP_Load(model_t *mod, void *buffer)
+void Mod_MAP_Load(model_t *mod, void *buffer, void *bufferend)
 {
        Host_Error("Mod_MAP_Load: not yet implemented\n");
 }