X-Git-Url: http://de.git.xonotic.org/?p=xonotic%2Fdarkplaces.git;a=blobdiff_plain;f=gl_rsurf.c;h=58c4695992ec205fce3da31ef90e413d7c3625b4;hp=6f1d9625f74996bfdb24fb1d3aa80ab8e2580497;hb=2075ae43356d724bae305ce8fd36ea570718b14a;hpb=f08d68a017c085bf75f45914b5a80d844f0e232b

diff --git a/gl_rsurf.c b/gl_rsurf.c
index 6f1d9625..58c46959 100644
--- a/gl_rsurf.c
+++ b/gl_rsurf.c
@@ -22,13 +22,22 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include "quakedef.h"
 #include "r_shadow.h"
 #include "portals.h"
-
-#define MAX_LIGHTMAP_SIZE 256
+#include "csprogs.h"
+#include "image.h"
 
 cvar_t r_ambient = {0, "r_ambient", "0", "brightens map, value is 0-128"};
 cvar_t r_lockpvs = {0, "r_lockpvs", "0", "disables pvs switching, allows you to walk around and inspect what is visible from a given location in the map (anything not visible from your current location will not be drawn)"};
 cvar_t r_lockvisibility = {0, "r_lockvisibility", "0", "disables visibility updates, allows you to walk around and inspect what is visible from a given viewpoint in the map (anything offscreen at the moment this is enabled will not be drawn)"};
-cvar_t r_useportalculling = {0, "r_useportalculling", "1", "use advanced portal culling visibility method to improve performance over just Potentially Visible Set, provides an even more significant speed improvement in unvised maps"};
+cvar_t r_useportalculling = {0, "r_useportalculling", "2", "improve framerate with r_novis 1 by using portal culling - still not as good as compiled visibility data in the map, but it helps (a value of 2 forces use of this even with vis data, which improves framerates in maps without too much complexity, but hurts in extremely complex maps, which is why 2 is not the default mode)"};
+cvar_t r_usesurfaceculling = {0, "r_usesurfaceculling", "1", "skip off-screen surfaces (1 = cull surfaces if the map is likely to benefit, 2 = always cull surfaces)"};
+cvar_t r_vis_trace = {0, "r_vis_trace", "0", "test if each portal or leaf is visible using tracelines"};
+cvar_t r_vis_trace_samples = {0, "r_vis_trace_samples", "1", "use this many randomly positioned tracelines each frame to refresh the visible timer"};
+cvar_t r_vis_trace_delay = {0, "r_vis_trace_delay", "1", "keep a portal visible for this many seconds"};
+cvar_t r_vis_trace_eyejitter = {0, "r_vis_trace_eyejitter", "8", "use a random offset of this much on the start of each traceline"};
+cvar_t r_vis_trace_enlarge = {0, "r_vis_trace_enlarge", "0", "make portal bounds bigger for tests by (1+this)*size"};
+cvar_t r_vis_trace_expand = {0, "r_vis_trace_expand", "0", "make portal bounds bigger for tests by this many units"};
+cvar_t r_vis_trace_pad = {0, "r_vis_trace_pad", "8", "accept traces that hit within this many units of the portal"};
+cvar_t r_vis_trace_surfaces = {0, "r_vis_trace_surfaces", "0", "also use tracelines to cull surfaces"};
 cvar_t r_q3bsp_renderskydepth = {0, "r_q3bsp_renderskydepth", "0", "draws sky depth masking in q3 maps (as in q1 maps), this means for example that sky polygons can hide other things"};
 
 /*
@@ -43,7 +52,7 @@ void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
 	int smax, tmax, i, size, size3, maps, l;
 	int *bl, scale;
 	unsigned char *lightmap, *out, *stain;
-	model_t *model = ent->model;
+	dp_model_t *model = ent->model;
 	int *intblocklights;
 	unsigned char *templight;
 
@@ -52,12 +61,15 @@ void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
 	size = smax*tmax;
 	size3 = size*3;
 
+	r_refdef.stats[r_stat_lightmapupdatepixels] += size;
+	r_refdef.stats[r_stat_lightmapupdates]++;
+
 	if (cl.buildlightmapmemorysize < size*sizeof(int[3]))
 	{
 		cl.buildlightmapmemorysize = size*sizeof(int[3]);
 		if (cl.buildlightmapmemory)
 			Mem_Free(cl.buildlightmapmemory);
-		cl.buildlightmapmemory = Mem_Alloc(cls.levelmempool, cl.buildlightmapmemorysize);
+		cl.buildlightmapmemory = (unsigned char *) Mem_Alloc(cls.levelmempool, cl.buildlightmapmemorysize);
 	}
 
 	// these both point at the same buffer, templight is only used for final
@@ -66,7 +78,7 @@ void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
 	templight = (unsigned char *)cl.buildlightmapmemory;
 
 	// update cached lighting info
-	surface->cached_dlight = 0;
+	model->brushq1.lightmapupdateflags[surface - model->data_surfaces] = false;
 
 	lightmap = surface->lightmapinfo->samples;
 
@@ -85,7 +97,7 @@ void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
 // add all the lightmaps
 		if (lightmap)
 			for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3)
-				for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size3;i++)
+				for (scale = r_refdef.scene.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size3;i++)
 					bl[i] += lightmap[i] * scale;
 	}
 
@@ -96,27 +108,30 @@ void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
 	// scaling, and remaps the 0-65536 (2x overbright) to 0-256, it will
 	// be doubled during rendering to achieve 2x overbright
 	// (0 = 0.0, 128 = 1.0, 256 = 2.0)
-	if (model->brushq1.lightmaprgba)
+	if (stain)
 	{
-		for (i = 0;i < size;i++)
+		for (i = 0;i < size;i++, bl += 3, stain += 3, out += 4)
 		{
-			l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
-			l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
-			l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
-			*out++ = 255;
+			l = (bl[0] * stain[0]) >> 16;out[2] = min(l, 255);
+			l = (bl[1] * stain[1]) >> 16;out[1] = min(l, 255);
+			l = (bl[2] * stain[2]) >> 16;out[0] = min(l, 255);
+			out[3] = 255;
 		}
 	}
 	else
 	{
-		for (i = 0;i < size;i++)
+		for (i = 0;i < size;i++, bl += 3, out += 4)
 		{
-			l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
-			l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
-			l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
+			l = bl[0] >> 8;out[2] = min(l, 255);
+			l = bl[1] >> 8;out[1] = min(l, 255);
+			l = bl[2] >> 8;out[0] = min(l, 255);
+			out[3] = 255;
 		}
 	}
 
-	R_UpdateTexture(surface->lightmaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
+	if(vid_sRGB.integer && vid_sRGB_fallback.integer && !vid.sRGB3D)
+		Image_MakesRGBColorsFromLinear_Lightmap(templight, templight, size);
+	R_UpdateTexture(surface->lightmaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], 0, smax, tmax, 1);
 
 	// update the surface's deluxemap if it has one
 	if (surface->deluxemaptexture != r_texture_blanknormalmap)
@@ -132,7 +147,7 @@ void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
 		{
 			for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3, normalmap += size3)
 			{
-				for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size;i++)
+				for (scale = r_refdef.scene.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size;i++)
 				{
 					// add the normalmap with weighting proportional to the style's lightmap intensity
 					l = (int)(VectorLength(lightmap + i*3) * scale);
@@ -145,34 +160,20 @@ void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
 		bl = intblocklights;
 		out = templight;
 		// we simply renormalize the weighted normals to get a valid deluxemap
-		if (model->brushq1.lightmaprgba)
-		{
-			for (i = 0;i < size;i++, bl += 3)
-			{
-				VectorCopy(bl, n);
-				VectorNormalize(n);
-				l = (int)(n[0] * 128 + 128);*out++ = bound(0, l, 255);
-				l = (int)(n[1] * 128 + 128);*out++ = bound(0, l, 255);
-				l = (int)(n[2] * 128 + 128);*out++ = bound(0, l, 255);
-				*out++ = 255;
-			}
-		}
-		else
+		for (i = 0;i < size;i++, bl += 3, out += 4)
 		{
-			for (i = 0;i < size;i++, bl += 3)
-			{
-				VectorCopy(bl, n);
-				VectorNormalize(n);
-				l = (int)(n[0] * 128 + 128);*out++ = bound(0, l, 255);
-				l = (int)(n[1] * 128 + 128);*out++ = bound(0, l, 255);
-				l = (int)(n[2] * 128 + 128);*out++ = bound(0, l, 255);
-			}
+			VectorCopy(bl, n);
+			VectorNormalize(n);
+			l = (int)(n[0] * 128 + 128);out[2] = bound(0, l, 255);
+			l = (int)(n[1] * 128 + 128);out[1] = bound(0, l, 255);
+			l = (int)(n[2] * 128 + 128);out[0] = bound(0, l, 255);
+			out[3] = 255;
 		}
-		R_UpdateTexture(surface->deluxemaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
+		R_UpdateTexture(surface->deluxemaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], 0, smax, tmax, 1);
 	}
 }
 
-void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
+static void R_StainNode (mnode_t *node, dp_model_t *model, const vec3_t origin, float radius, const float fcolor[8])
 {
 	float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 	msurface_t *surface, *endsurface;
@@ -226,7 +227,7 @@ loc0:
 			s = bound(0, impacts, smax * 16) - impacts;
 			t = bound(0, impactt, tmax * 16) - impactt;
 			i = (int)(s * s + t * t + dist2);
-			if (i > maxdist)
+			if ((i > maxdist) || (smax > (int)(sizeof(sdtable)/sizeof(sdtable[0])))) // smax overflow fix from Andreas Dehmel
 				continue;
 
 			// reduce calculations
@@ -269,7 +270,7 @@ loc0:
 			}
 			// force lightmap upload
 			if (stained)
-				surface->cached_dlight = true;
+				model->brushq1.lightmapupdateflags[surface - model->data_surfaces] = true;
 		}
 	}
 
@@ -299,9 +300,9 @@ void R_Stain (const vec3_t origin, float radius, int cr1, int cg1, int cb1, int
 	int n;
 	float fcolor[8];
 	entity_render_t *ent;
-	model_t *model;
+	dp_model_t *model;
 	vec3_t org;
-	if (r_refdef.worldmodel == NULL || !r_refdef.worldmodel->brush.data_nodes || !r_refdef.worldmodel->brushq1.lightdata)
+	if (r_refdef.scene.worldmodel == NULL || !r_refdef.scene.worldmodel->brush.data_nodes || !r_refdef.scene.worldmodel->brushq1.lightdata)
 		return;
 	fcolor[0] = cr1;
 	fcolor[1] = cg1;
@@ -312,7 +313,7 @@ void R_Stain (const vec3_t origin, float radius, int cr1, int cg1, int cb1, int
 	fcolor[6] = cb2 - cb1;
 	fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
 
-	R_StainNode(r_refdef.worldmodel->brush.data_nodes + r_refdef.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.worldmodel, origin, radius, fcolor);
+	R_StainNode(r_refdef.scene.worldmodel->brush.data_nodes + r_refdef.scene.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.scene.worldmodel, origin, radius, fcolor);
 
 	// look for embedded bmodels
 	for (n = 0;n < cl.num_brushmodel_entities;n++)
@@ -345,6 +346,7 @@ static void R_DrawPortal_Callback(const entity_render_t *ent, const rtlight_t *r
 	// called with a batch, so numsurfaces is always 1, and the surfacelist
 	// contains only a leaf number for coloring purposes
 	const mportal_t *portal = (mportal_t *)ent;
+	qboolean isvis;
 	int i, numpoints;
 	float *v;
 	float vertex3f[POLYGONELEMENTS_MAXPOINTS*3];
@@ -352,24 +354,27 @@ static void R_DrawPortal_Callback(const entity_render_t *ent, const rtlight_t *r
 	GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 	GL_DepthMask(false);
 	GL_DepthRange(0, 1);
+	GL_PolygonOffset(r_refdef.polygonfactor, r_refdef.polygonoffset);
 	GL_DepthTest(true);
 	GL_CullFace(GL_NONE);
-	R_Mesh_Matrix(&identitymatrix);
+	R_EntityMatrix(&identitymatrix);
 
 	numpoints = min(portal->numpoints, POLYGONELEMENTS_MAXPOINTS);
 
-	R_Mesh_VertexPointer(vertex3f, 0, 0);
-	R_Mesh_ColorPointer(NULL, 0, 0);
-	R_Mesh_ResetTextureState();
+//	R_Mesh_ResetTextureState();
+
+	isvis = (portal->here->clusterindex >= 0 && portal->past->clusterindex >= 0 && portal->here->clusterindex != portal->past->clusterindex);
 
-	i = surfacelist[0];
-	GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f) * r_view.colorscale,
-			 ((i & 0x0038) >> 3) * (1.0f / 7.0f) * r_view.colorscale,
-			 ((i & 0x01C0) >> 6) * (1.0f / 7.0f) * r_view.colorscale,
-			 0.125f);
+	i = surfacelist[0] >> 1;
+	GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f) * r_refdef.view.colorscale,
+			 ((i & 0x0038) >> 3) * (1.0f / 7.0f) * r_refdef.view.colorscale,
+			 ((i & 0x01C0) >> 6) * (1.0f / 7.0f) * r_refdef.view.colorscale,
+			 isvis ? 0.125f : 0.03125f);
 	for (i = 0, v = vertex3f;i < numpoints;i++, v += 3)
 		VectorCopy(portal->points[i].position, v);
-	R_Mesh_Draw(0, numpoints, numpoints - 2, polygonelements, 0, 0);
+	R_Mesh_PrepareVertices_Generic_Arrays(numpoints, vertex3f, NULL, NULL);
+	R_SetupShader_Generic_NoTexture(false, false);
+	R_Mesh_Draw(0, numpoints, 0, numpoints - 2, polygonelement3i, NULL, 0, polygonelement3s, NULL, 0);
 }
 
 // LordHavoc: this is just a nice debugging tool, very slow
@@ -378,15 +383,15 @@ void R_DrawPortals(void)
 	int i, leafnum;
 	mportal_t *portal;
 	float center[3], f;
-	model_t *model = r_refdef.worldmodel;
+	dp_model_t *model = r_refdef.scene.worldmodel;
 	if (model == NULL)
 		return;
-	for (leafnum = 0;leafnum < r_refdef.worldmodel->brush.num_leafs;leafnum++)
+	for (leafnum = 0;leafnum < r_refdef.scene.worldmodel->brush.num_leafs;leafnum++)
 	{
-		if (r_viewcache.world_leafvisible[leafnum])
+		if (r_refdef.viewcache.world_leafvisible[leafnum])
 		{
 			//for (portalnum = 0, portal = model->brush.data_portals;portalnum < model->brush.num_portals;portalnum++, portal++)
-			for (portal = r_refdef.worldmodel->brush.data_leafs[leafnum].portals;portal;portal = portal->next)
+			for (portal = r_refdef.scene.worldmodel->brush.data_leafs[leafnum].portals;portal;portal = portal->next)
 			{
 				if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
 				if (!R_CullBox(portal->mins, portal->maxs))
@@ -396,61 +401,116 @@ void R_DrawPortals(void)
 						VectorAdd(center, portal->points[i].position, center);
 					f = ixtable[portal->numpoints];
 					VectorScale(center, f, center);
-					R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, (entity_render_t *)portal, leafnum, r_shadow_rtlight);
+					R_MeshQueue_AddTransparent(TRANSPARENTSORT_DISTANCE, center, R_DrawPortal_Callback, (entity_render_t *)portal, leafnum, rsurface.rtlight);
 				}
 			}
 		}
 	}
 }
 
-void R_View_WorldVisibility(void)
+static void R_View_WorldVisibility_CullSurfaces(void)
+{
+	int surfaceindex;
+	int surfaceindexstart;
+	int surfaceindexend;
+	unsigned char *surfacevisible;
+	msurface_t *surfaces;
+	dp_model_t *model = r_refdef.scene.worldmodel;
+	if (!model)
+		return;
+	if (r_trippy.integer)
+		return;
+	if (r_usesurfaceculling.integer < 1)
+		return;
+	surfaceindexstart = model->firstmodelsurface;
+	surfaceindexend = surfaceindexstart + model->nummodelsurfaces;
+	surfaces = model->data_surfaces;
+	surfacevisible = r_refdef.viewcache.world_surfacevisible;
+	for (surfaceindex = surfaceindexstart; surfaceindex < surfaceindexend; surfaceindex++)
+	{
+		if (surfacevisible[surfaceindex])
+		{
+			if (R_CullBox(surfaces[surfaceindex].mins, surfaces[surfaceindex].maxs)
+			 || (r_vis_trace_surfaces.integer && !R_CanSeeBox(r_vis_trace_samples.integer, r_vis_trace_eyejitter.value, r_vis_trace_enlarge.value, r_vis_trace_expand.value, r_vis_trace_pad.value, r_refdef.view.origin, surfaces[surfaceindex].mins, surfaces[surfaceindex].maxs)))
+				surfacevisible[surfaceindex] = 0;
+		}
+	}
+}
+
+void R_View_WorldVisibility(qboolean forcenovis)
 {
 	int i, j, *mark;
 	mleaf_t *leaf;
 	mleaf_t *viewleaf;
-	model_t *model = r_refdef.worldmodel;
+	dp_model_t *model = r_refdef.scene.worldmodel;
 
 	if (!model)
 		return;
 
+	if (r_refdef.view.usecustompvs)
+	{
+		// clear the visible surface and leaf flags arrays
+		memset(r_refdef.viewcache.world_surfacevisible, 0, model->num_surfaces);
+		memset(r_refdef.viewcache.world_leafvisible, 0, model->brush.num_leafs);
+		r_refdef.viewcache.world_novis = false;
+
+		// simply cull each marked leaf to the frustum (view pyramid)
+		for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
+		{
+			// if leaf is in current pvs and on the screen, mark its surfaces
+			if (CHECKPVSBIT(r_refdef.viewcache.world_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
+			{
+				r_refdef.stats[r_stat_world_leafs]++;
+				r_refdef.viewcache.world_leafvisible[j] = true;
+				if (leaf->numleafsurfaces)
+					for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
+						r_refdef.viewcache.world_surfacevisible[*mark] = true;
+			}
+		}
+		R_View_WorldVisibility_CullSurfaces();
+		return;
+	}
+
 	// if possible find the leaf the view origin is in
-	viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_view.origin) : NULL;
+	viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_refdef.view.origin) : NULL;
 	// if possible fetch the visible cluster bits
 	if (!r_lockpvs.integer && model->brush.FatPVS)
-		model->brush.FatPVS(model, r_view.origin, 2, r_viewcache.world_pvsbits, sizeof(r_viewcache.world_pvsbits));
+		model->brush.FatPVS(model, r_refdef.view.origin, 2, r_refdef.viewcache.world_pvsbits, (r_refdef.viewcache.world_numclusters+7)>>3, false);
 
 	if (!r_lockvisibility.integer)
 	{
 		// clear the visible surface and leaf flags arrays
-		memset(r_viewcache.world_surfacevisible, 0, model->num_surfaces);
-		memset(r_viewcache.world_leafvisible, 0, model->brush.num_leafs);
+		memset(r_refdef.viewcache.world_surfacevisible, 0, model->num_surfaces);
+		memset(r_refdef.viewcache.world_leafvisible, 0, model->brush.num_leafs);
 
-		r_viewcache.world_novis = false;
+		r_refdef.viewcache.world_novis = false;
 
 		// if floating around in the void (no pvs data available, and no
 		// portals available), simply use all on-screen leafs.
-		if (!viewleaf || viewleaf->clusterindex < 0)
+		if (!viewleaf || viewleaf->clusterindex < 0 || forcenovis || !r_refdef.view.usevieworiginculling)
 		{
 			// no visibility method: (used when floating around in the void)
 			// simply cull each leaf to the frustum (view pyramid)
 			// similar to quake's RecursiveWorldNode but without cache misses
-			r_viewcache.world_novis = true;
+			r_refdef.viewcache.world_novis = true;
 			for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 			{
+				if (leaf->clusterindex < 0)
+					continue;
 				// if leaf is in current pvs and on the screen, mark its surfaces
 				if (!R_CullBox(leaf->mins, leaf->maxs))
 				{
-					r_refdef.stats.world_leafs++;
-					r_viewcache.world_leafvisible[j] = true;
+					r_refdef.stats[r_stat_world_leafs]++;
+					r_refdef.viewcache.world_leafvisible[j] = true;
 					if (leaf->numleafsurfaces)
 						for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
-							r_viewcache.world_surfacevisible[*mark] = true;
+							r_refdef.viewcache.world_surfacevisible[*mark] = true;
 				}
 			}
 		}
-		// if the user prefers to disable portal culling (testing?), simply
-		// use all on-screen leafs that are in the pvs.
-		else if (!r_useportalculling.integer)
+		// just check if each leaf in the PVS is on screen
+		// (unless portal culling is enabled)
+		else if (!model->brush.data_portals || r_useportalculling.integer < 1 || (r_useportalculling.integer < 2 && !r_novis.integer))
 		{
 			// pvs method:
 			// simply check if each leaf is in the Potentially Visible Set,
@@ -458,24 +518,28 @@ void R_View_WorldVisibility(void)
 			// similar to quake's RecursiveWorldNode but without cache misses
 			for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 			{
+				if (leaf->clusterindex < 0)
+					continue;
 				// if leaf is in current pvs and on the screen, mark its surfaces
-				if (CHECKPVSBIT(r_viewcache.world_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
+				if (CHECKPVSBIT(r_refdef.viewcache.world_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 				{
-					r_refdef.stats.world_leafs++;
-					r_viewcache.world_leafvisible[j] = true;
+					r_refdef.stats[r_stat_world_leafs]++;
+					r_refdef.viewcache.world_leafvisible[j] = true;
 					if (leaf->numleafsurfaces)
 						for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
-							r_viewcache.world_surfacevisible[*mark] = true;
+							r_refdef.viewcache.world_surfacevisible[*mark] = true;
 				}
 			}
 		}
-		// otherwise use a recursive portal flow, culling each portal to
+		// if desired use a recursive portal flow, culling each portal to
 		// frustum and checking if the leaf the portal leads to is in the pvs
 		else
 		{
 			int leafstackpos;
 			mportal_t *p;
 			mleaf_t *leafstack[8192];
+			vec3_t cullmins, cullmaxs;
+			float cullbias = r_nearclip.value * 2.0f; // the nearclip plane can easily end up culling portals in certain perfectly-aligned views, causing view blackouts
 			// simple-frustum portal method:
 			// follows portals leading outward from viewleaf, does not venture
 			// offscreen or into leafs that are not visible, faster than
@@ -488,76 +552,148 @@ void R_View_WorldVisibility(void)
 			while (leafstackpos)
 			{
 				leaf = leafstack[--leafstackpos];
-				if (r_viewcache.world_leafvisible[leaf - model->brush.data_leafs])
+				if (r_refdef.viewcache.world_leafvisible[leaf - model->brush.data_leafs])
+					continue;
+				if (leaf->clusterindex < 0)
 					continue;
-				r_refdef.stats.world_leafs++;
-				r_viewcache.world_leafvisible[leaf - model->brush.data_leafs] = true;
+				r_refdef.stats[r_stat_world_leafs]++;
+				r_refdef.viewcache.world_leafvisible[leaf - model->brush.data_leafs] = true;
 				// mark any surfaces bounding this leaf
 				if (leaf->numleafsurfaces)
 					for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
-						r_viewcache.world_surfacevisible[*mark] = true;
+						r_refdef.viewcache.world_surfacevisible[*mark] = true;
 				// follow portals into other leafs
 				// the checks are:
-				// if viewer is behind portal (portal faces outward into the scene)
-				// and the portal polygon's bounding box is on the screen
-				// and the leaf has not been visited yet
+				// the leaf has not been visited yet
 				// and the leaf is visible in the pvs
-				// (the first two checks won't cause as many cache misses as the leaf checks)
+				// the portal polygon's bounding box is on the screen
 				for (p = leaf->portals;p;p = p->next)
 				{
-					r_refdef.stats.world_portals++;
-					if (DotProduct(r_view.origin, p->plane.normal) < (p->plane.dist + 1)
-					 && !r_viewcache.world_leafvisible[p->past - model->brush.data_leafs]
-					 && CHECKPVSBIT(r_viewcache.world_pvsbits, p->past->clusterindex)
-					 && !R_CullBox(p->mins, p->maxs)
-					 && leafstackpos < (int)(sizeof(leafstack) / sizeof(leafstack[0])))
-						leafstack[leafstackpos++] = p->past;
+					r_refdef.stats[r_stat_world_portals]++;
+					if (r_refdef.viewcache.world_leafvisible[p->past - model->brush.data_leafs])
+						continue;
+					if (!CHECKPVSBIT(r_refdef.viewcache.world_pvsbits, p->past->clusterindex))
+						continue;
+					cullmins[0] = p->mins[0] - cullbias;
+					cullmins[1] = p->mins[1] - cullbias;
+					cullmins[2] = p->mins[2] - cullbias;
+					cullmaxs[0] = p->maxs[0] + cullbias;
+					cullmaxs[1] = p->maxs[1] + cullbias;
+					cullmaxs[2] = p->maxs[2] + cullbias;
+					if (R_CullBox(cullmins, cullmaxs))
+						continue;
+					if (r_vis_trace.integer)
+					{
+						if (p->tracetime != realtime && R_CanSeeBox(r_vis_trace_samples.value, r_vis_trace_eyejitter.value, r_vis_trace_enlarge.value, r_vis_trace_expand.value, r_vis_trace_pad.value, r_refdef.view.origin, cullmins, cullmaxs))
+							p->tracetime = realtime;
+						if (realtime - p->tracetime > r_vis_trace_delay.value)
+							continue;
+					}
+					if (leafstackpos >= (int)(sizeof(leafstack) / sizeof(leafstack[0])))
+						break;
+					leafstack[leafstackpos++] = p->past;
 				}
 			}
 		}
 	}
+
+	R_View_WorldVisibility_CullSurfaces();
 }
 
 void R_Q1BSP_DrawSky(entity_render_t *ent)
 {
 	if (ent->model == NULL)
 		return;
-	if (ent == r_refdef.worldentity)
-		R_DrawWorldSurfaces(true, true, false);
+	R_DrawModelSurfaces(ent, true, true, false, false, false, false);
+}
+
+void R_Q1BSP_DrawAddWaterPlanes(entity_render_t *ent)
+{
+	int i, j, n, flagsmask;
+	dp_model_t *model = ent->model;
+	msurface_t *surfaces;
+	if (model == NULL)
+		return;
+
+	RSurf_ActiveModelEntity(ent, true, false, false);
+
+	surfaces = model->data_surfaces;
+	flagsmask = MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA;
+
+	// add visible surfaces to draw list
+	if (ent == r_refdef.scene.worldentity)
+	{
+		for (i = 0;i < model->nummodelsurfaces;i++)
+		{
+			j = model->sortedmodelsurfaces[i];
+			if (r_refdef.viewcache.world_surfacevisible[j])
+				if (surfaces[j].texture->basematerialflags & flagsmask)
+					R_Water_AddWaterPlane(surfaces + j, 0);
+		}
+	}
 	else
-		R_DrawModelSurfaces(ent, true, true, false);
+	{
+		if(ent->entitynumber >= MAX_EDICTS) // && CL_VM_TransformView(ent->entitynumber - MAX_EDICTS, NULL, NULL, NULL))
+			n = ent->entitynumber;
+		else
+			n = 0;
+		for (i = 0;i < model->nummodelsurfaces;i++)
+		{
+			j = model->sortedmodelsurfaces[i];
+			if (surfaces[j].texture->basematerialflags & flagsmask)
+				R_Water_AddWaterPlane(surfaces + j, n);
+		}
+	}
+	rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveModelEntity
 }
 
 void R_Q1BSP_Draw(entity_render_t *ent)
 {
-	model_t *model = ent->model;
+	dp_model_t *model = ent->model;
 	if (model == NULL)
 		return;
-	if (ent == r_refdef.worldentity)
-		R_DrawWorldSurfaces(false, true, false);
-	else
-		R_DrawModelSurfaces(ent, false, true, false);
+	R_DrawModelSurfaces(ent, false, true, false, false, false, false);
 }
 
 void R_Q1BSP_DrawDepth(entity_render_t *ent)
 {
-	model_t *model = ent->model;
+	dp_model_t *model = ent->model;
+	if (model == NULL || model->surfmesh.isanimated)
+		return;
+	GL_ColorMask(0,0,0,0);
+	GL_Color(1,1,1,1);
+	GL_DepthTest(true);
+	GL_BlendFunc(GL_ONE, GL_ZERO);
+	GL_DepthMask(true);
+//	R_Mesh_ResetTextureState();
+	R_DrawModelSurfaces(ent, false, false, true, false, false, false);
+	GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
+}
+
+void R_Q1BSP_DrawDebug(entity_render_t *ent)
+{
+	if (ent->model == NULL)
+		return;
+	R_DrawModelSurfaces(ent, false, false, false, true, false, false);
+}
+
+void R_Q1BSP_DrawPrepass(entity_render_t *ent)
+{
+	dp_model_t *model = ent->model;
 	if (model == NULL)
 		return;
-	if (ent == r_refdef.worldentity)
-		R_DrawWorldSurfaces(false, false, true);
-	else
-		R_DrawModelSurfaces(ent, false, false, true);
+	R_DrawModelSurfaces(ent, false, true, false, false, true, false);
 }
 
 typedef struct r_q1bsp_getlightinfo_s
 {
-	model_t *model;
+	dp_model_t *model;
 	vec3_t relativelightorigin;
 	float lightradius;
 	int *outleaflist;
 	unsigned char *outleafpvs;
 	int outnumleafs;
+	unsigned char *visitingleafpvs;
 	int *outsurfacelist;
 	unsigned char *outsurfacepvs;
 	unsigned char *tempsurfacepvs;
@@ -571,231 +707,443 @@ typedef struct r_q1bsp_getlightinfo_s
 	const unsigned char *pvs;
 	qboolean svbsp_active;
 	qboolean svbsp_insertoccluder;
+	qboolean noocclusion; // avoids PVS culling
+	qboolean frontsidecasting; // casts shadows from surfaces facing the light (otherwise ones facing away)
+	int numfrustumplanes;
+	const mplane_t *frustumplanes;
 }
 r_q1bsp_getlightinfo_t;
 
-void R_Q1BSP_RecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, mnode_t *node)
+#define GETLIGHTINFO_MAXNODESTACK 4096
+
+static void R_Q1BSP_RecursiveGetLightInfo_BSP(r_q1bsp_getlightinfo_t *info, qboolean skipsurfaces)
 {
+	// nodestack
+	mnode_t *nodestack[GETLIGHTINFO_MAXNODESTACK];
+	int nodestackpos = 0;
+	// node processing
+	mplane_t *plane;
+	mnode_t *node;
 	int sides;
+	// leaf processing
 	mleaf_t *leaf;
-	for (;;)
+	const msurface_t *surface;
+	const msurface_t *surfaces = info->model->data_surfaces;
+	int numleafsurfaces;
+	int leafsurfaceindex;
+	int surfaceindex;
+	int triangleindex, t;
+	int currentmaterialflags;
+	qboolean castshadow;
+	const int *e;
+	const vec_t *v[3];
+	float v2[3][3];
+	qboolean insidebox;
+	qboolean noocclusion = info->noocclusion;
+	qboolean frontsidecasting = info->frontsidecasting;
+	qboolean svbspactive = info->svbsp_active;
+	qboolean svbspinsertoccluder = info->svbsp_insertoccluder;
+	const int *leafsurfaceindices;
+	qboolean addedtris;
+	int i;
+	mportal_t *portal;
+	static float points[128][3];
+	// push the root node onto our nodestack
+	nodestack[nodestackpos++] = info->model->brush.data_nodes;
+	// we'll be done when the nodestack is empty
+	while (nodestackpos)
 	{
-		mplane_t *plane = node->plane;
-		//if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
-		//	return;
-		if (!plane)
-			break;
-		//if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, r_shadow_rtlight_numfrustumplanes, r_shadow_rtlight_frustumplanes))
-		//	return;
-		if (plane->type < 3)
+		// get a node from the stack to process
+		node = nodestack[--nodestackpos];
+		// is it a node or a leaf?
+		plane = node->plane;
+		if (plane)
 		{
-			if (info->lightmins[plane->type] > plane->dist)
-				node = node->children[0];
-			else if (info->lightmaxs[plane->type] < plane->dist)
-				node = node->children[1];
-			else if (info->relativelightorigin[plane->type] >= plane->dist)
+			// node
+#if 0
+			if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
+				continue;
+#endif
+#if 0
+			if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, rtlight->cached_numfrustumplanes, rtlight->cached_frustumplanes))
+				continue;
+#endif
+			// axial planes can be processed much more quickly
+			if (plane->type < 3)
 			{
-				R_Q1BSP_RecursiveGetLightInfo(info, node->children[0]);
-				node = node->children[1];
+				// axial plane
+				if (info->lightmins[plane->type] > plane->dist)
+					nodestack[nodestackpos++] = node->children[0];
+				else if (info->lightmaxs[plane->type] < plane->dist)
+					nodestack[nodestackpos++] = node->children[1];
+				else
+				{
+					// recurse front side first because the svbsp building prefers it
+					if (info->relativelightorigin[plane->type] >= plane->dist)
+					{
+						if (nodestackpos < GETLIGHTINFO_MAXNODESTACK-1)
+							nodestack[nodestackpos++] = node->children[0];
+						nodestack[nodestackpos++] = node->children[1];
+					}
+					else
+					{
+						if (nodestackpos < GETLIGHTINFO_MAXNODESTACK-1)
+							nodestack[nodestackpos++] = node->children[1];
+						nodestack[nodestackpos++] = node->children[0];
+					}
+				}
 			}
 			else
 			{
-				R_Q1BSP_RecursiveGetLightInfo(info, node->children[1]);
-				node = node->children[0];
+				// sloped plane
+				sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, plane);
+				switch (sides)
+				{
+				default:
+					continue; // ERROR: NAN bounding box!
+				case 1:
+					nodestack[nodestackpos++] = node->children[0];
+					break;
+				case 2:
+					nodestack[nodestackpos++] = node->children[1];
+					break;
+				case 3:
+					// recurse front side first because the svbsp building prefers it
+					if (PlaneDist(info->relativelightorigin, plane) >= 0)
+					{
+						if (nodestackpos < GETLIGHTINFO_MAXNODESTACK-1)
+							nodestack[nodestackpos++] = node->children[0];
+						nodestack[nodestackpos++] = node->children[1];
+					}
+					else
+					{
+						if (nodestackpos < GETLIGHTINFO_MAXNODESTACK-1)
+							nodestack[nodestackpos++] = node->children[1];
+						nodestack[nodestackpos++] = node->children[0];
+					}
+					break;
+				}
 			}
 		}
 		else
 		{
-			sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, plane);
-			if (sides == 3)
+			// leaf
+			leaf = (mleaf_t *)node;
+#if 1
+			if (!info->noocclusion && info->pvs != NULL && !CHECKPVSBIT(info->pvs, leaf->clusterindex))
+				continue;
+#endif
+#if 1
+			if (!BoxesOverlap(info->lightmins, info->lightmaxs, leaf->mins, leaf->maxs))
+				continue;
+#endif
+#if 1
+			if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(leaf->mins, leaf->maxs, info->numfrustumplanes, info->frustumplanes))
+				continue;
+#endif
+
+			if (svbspactive)
 			{
-				// recurse front side first because the svbsp building prefers it
-				if (PlaneDist(info->relativelightorigin, plane) >= 0)
+				// we can occlusion test the leaf by checking if all of its portals
+				// are occluded (unless the light is in this leaf - but that was
+				// already handled by the caller)
+				for (portal = leaf->portals;portal;portal = portal->next)
 				{
-					R_Q1BSP_RecursiveGetLightInfo(info, node->children[0]);
-					node = node->children[1];
+					for (i = 0;i < portal->numpoints;i++)
+						VectorCopy(portal->points[i].position, points[i]);
+					if (SVBSP_AddPolygon(&r_svbsp, portal->numpoints, points[0], false, NULL, NULL, 0) & 2)
+						break;
 				}
-				else
+				if (leaf->portals && portal == NULL)
+					continue; // no portals of this leaf visible
+			}
+
+			// add this leaf to the reduced light bounds
+			info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
+			info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
+			info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
+			info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
+			info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
+			info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
+
+			// mark this leaf as being visible to the light
+			if (info->outleafpvs)
+			{
+				int leafindex = leaf - info->model->brush.data_leafs;
+				if (!CHECKPVSBIT(info->outleafpvs, leafindex))
 				{
-					R_Q1BSP_RecursiveGetLightInfo(info, node->children[1]);
-					node = node->children[0];
+					SETPVSBIT(info->outleafpvs, leafindex);
+					info->outleaflist[info->outnumleafs++] = leafindex;
 				}
 			}
-			else if (sides == 0)
-				return; // ERROR: NAN bounding box!
-			else
-				node = node->children[sides - 1];
-		}
-	}
-	if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, r_shadow_rtlight_numfrustumplanes, r_shadow_rtlight_frustumplanes))
-		return;
-	leaf = (mleaf_t *)node;
-	if (info->svbsp_active)
-	{
-		int i;
-		mportal_t *portal;
-		double points[128][3];
-		for (portal = leaf->portals;portal;portal = portal->next)
-		{
-			for (i = 0;i < portal->numpoints;i++)
-				VectorCopy(portal->points[i].position, points[i]);
-			if (SVBSP_AddPolygon(&r_svbsp, portal->numpoints, points[0], false, NULL, NULL, 0) & 2)
-				break;
-		}
-		if (portal == NULL)
-			return; // no portals of this leaf visible
-	}
-	else
-	{
-		if (r_shadow_frontsidecasting.integer && info->pvs != NULL && !CHECKPVSBIT(info->pvs, leaf->clusterindex))
-			return;
-	}
-	// inserting occluders does not alter the leaf info
-	if (!info->svbsp_insertoccluder)
-	{
-		info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
-		info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
-		info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
-		info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
-		info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
-		info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
-		if (info->outleafpvs)
-		{
-			int leafindex = leaf - info->model->brush.data_leafs;
-			if (!CHECKPVSBIT(info->outleafpvs, leafindex))
+
+			// when using BIH, we skip the surfaces here
+			if (skipsurfaces)
+				continue;
+
+			// iterate the surfaces linked by this leaf and check their triangles
+			leafsurfaceindices = leaf->firstleafsurface;
+			numleafsurfaces = leaf->numleafsurfaces;
+			if (svbspinsertoccluder)
 			{
-				SETPVSBIT(info->outleafpvs, leafindex);
-				info->outleaflist[info->outnumleafs++] = leafindex;
+				for (leafsurfaceindex = 0;leafsurfaceindex < numleafsurfaces;leafsurfaceindex++)
+				{
+					surfaceindex = leafsurfaceindices[leafsurfaceindex];
+					if (CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
+						continue;
+					SETPVSBIT(info->outsurfacepvs, surfaceindex);
+					surface = surfaces + surfaceindex;
+					if (!BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
+						continue;
+					currentmaterialflags = R_GetCurrentTexture(surface->texture)->currentmaterialflags;
+					castshadow = !(currentmaterialflags & MATERIALFLAG_NOSHADOW);
+					if (!castshadow)
+						continue;
+					insidebox = BoxInsideBox(surface->mins, surface->maxs, info->lightmins, info->lightmaxs);
+					for (triangleindex = 0, t = surface->num_firsttriangle, e = info->model->surfmesh.data_element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
+					{
+						v[0] = info->model->surfmesh.data_vertex3f + e[0] * 3;
+						v[1] = info->model->surfmesh.data_vertex3f + e[1] * 3;
+						v[2] = info->model->surfmesh.data_vertex3f + e[2] * 3;
+						VectorCopy(v[0], v2[0]);
+						VectorCopy(v[1], v2[1]);
+						VectorCopy(v[2], v2[2]);
+						if (insidebox || TriangleBBoxOverlapsBox(v2[0], v2[1], v2[2], info->lightmins, info->lightmaxs))
+							SVBSP_AddPolygon(&r_svbsp, 3, v2[0], true, NULL, NULL, 0);
+					}
+				}
 			}
-		}
-	}
-	if (info->outsurfacepvs)
-	{
-		int leafsurfaceindex;
-		int surfaceindex;
-		int triangleindex, t;
-		msurface_t *surface;
-		const int *e;
-		const vec_t *v[3];
-		double v2[3][3];
-		for (leafsurfaceindex = 0;leafsurfaceindex < leaf->numleafsurfaces;leafsurfaceindex++)
-		{
-			surfaceindex = leaf->firstleafsurface[leafsurfaceindex];
-			if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
+			else
 			{
-				surface = info->model->data_surfaces + surfaceindex;
-				if (BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs)
-				 && (!info->svbsp_insertoccluder || !(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW)))
+				for (leafsurfaceindex = 0;leafsurfaceindex < numleafsurfaces;leafsurfaceindex++)
 				{
-					qboolean addedtris = false;
-					qboolean insidebox = BoxInsideBox(surface->mins, surface->maxs, info->lightmins, info->lightmaxs);
-					for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
+					surfaceindex = leafsurfaceindices[leafsurfaceindex];
+					if (CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
+						continue;
+					SETPVSBIT(info->outsurfacepvs, surfaceindex);
+					surface = surfaces + surfaceindex;
+					if (!BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
+						continue;
+					addedtris = false;
+					currentmaterialflags = R_GetCurrentTexture(surface->texture)->currentmaterialflags;
+					castshadow = !(currentmaterialflags & MATERIALFLAG_NOSHADOW);
+					insidebox = BoxInsideBox(surface->mins, surface->maxs, info->lightmins, info->lightmaxs);
+					for (triangleindex = 0, t = surface->num_firsttriangle, e = info->model->surfmesh.data_element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
 					{
-						v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
-						v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
-						v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
-						if (insidebox || TriangleOverlapsBox(v[0], v[1], v[2], info->lightmins, info->lightmaxs))
+						v[0] = info->model->surfmesh.data_vertex3f + e[0] * 3;
+						v[1] = info->model->surfmesh.data_vertex3f + e[1] * 3;
+						v[2] = info->model->surfmesh.data_vertex3f + e[2] * 3;
+						VectorCopy(v[0], v2[0]);
+						VectorCopy(v[1], v2[1]);
+						VectorCopy(v[2], v2[2]);
+						if (!insidebox && !TriangleBBoxOverlapsBox(v2[0], v2[1], v2[2], info->lightmins, info->lightmaxs))
+							continue;
+						if (svbspactive && !(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], false, NULL, NULL, 0) & 2))
+							continue;
+						// we don't omit triangles from lighting even if they are
+						// backfacing, because when using shadowmapping they are often
+						// not fully occluded on the horizon of an edge
+						SETPVSBIT(info->outlighttrispvs, t);
+						addedtris = true;
+						if (castshadow)
 						{
-							if (info->svbsp_insertoccluder)
+							if (noocclusion || (currentmaterialflags & MATERIALFLAG_NOCULLFACE))
+							{
+								// if the material is double sided we
+								// can't cull by direction
+								SETPVSBIT(info->outshadowtrispvs, t);
+							}
+							else if (frontsidecasting)
 							{
-								if (!(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOCULLFACE) && r_shadow_frontsidecasting.integer != PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]))
-									continue;
-								if (surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW)
-									continue;
-								VectorCopy(v[0], v2[0]);
-								VectorCopy(v[1], v2[1]);
-								VectorCopy(v[2], v2[2]);
-								if (!(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], true, NULL, NULL, 0) & 2))
-									continue;
-								addedtris = true;
+								// front side casting occludes backfaces,
+								// so they are completely useless as both
+								// casters and lit polygons
+								if (PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
+									SETPVSBIT(info->outshadowtrispvs, t);
 							}
 							else
 							{
-								if (info->svbsp_active)
-								{
-									VectorCopy(v[0], v2[0]);
-									VectorCopy(v[1], v2[1]);
-									VectorCopy(v[2], v2[2]);
-									if (!(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], false, NULL, NULL, 0) & 2))
-										continue;
-								}
-								if (surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOCULLFACE)
-								{
-									// if the material is double sided we
-									// can't cull by direction
-									SETPVSBIT(info->outlighttrispvs, t);
-									addedtris = true;
-									if (!(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW))
-										SETPVSBIT(info->outshadowtrispvs, t);
-								}
-								else if (r_shadow_frontsidecasting.integer)
-								{
-									// front side casting occludes backfaces,
-									// so they are completely useless as both
-									// casters and lit polygons
-									if (!PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]))
-										continue;
-									SETPVSBIT(info->outlighttrispvs, t);
-									addedtris = true;
-									if (!(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW))
-										SETPVSBIT(info->outshadowtrispvs, t);
-								}
-								else
-								{
-									// back side casting does not occlude
-									// anything so we can't cull lit polygons
-									SETPVSBIT(info->outlighttrispvs, t);
-									addedtris = true;
-									if (!PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]) && !(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW))
-										SETPVSBIT(info->outshadowtrispvs, t);
-								}
+								// back side casting does not occlude
+								// anything so we can't cull lit polygons
+								if (!PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
+									SETPVSBIT(info->outshadowtrispvs, t);
 							}
 						}
 					}
 					if (addedtris)
-					{
-						SETPVSBIT(info->outsurfacepvs, surfaceindex);
 						info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
+				}
+			}
+		}
+	}
+}
+
+static void R_Q1BSP_RecursiveGetLightInfo_BIH(r_q1bsp_getlightinfo_t *info, const bih_t *bih)
+{
+	bih_leaf_t *leaf;
+	bih_node_t *node;
+	int nodenum;
+	int axis;
+	int surfaceindex;
+	int t;
+	int nodeleafindex;
+	int currentmaterialflags;
+	qboolean castshadow;
+	qboolean noocclusion = info->noocclusion;
+	qboolean frontsidecasting = info->frontsidecasting;
+	msurface_t *surface;
+	const int *e;
+	const vec_t *v[3];
+	float v2[3][3];
+	int nodestack[GETLIGHTINFO_MAXNODESTACK];
+	int nodestackpos = 0;
+	// note: because the BSP leafs are not in the BIH tree, the _BSP function
+	// must be called to mark leafs visible for entity culling...
+	// we start at the root node
+	nodestack[nodestackpos++] = bih->rootnode;
+	// we'll be done when the stack is empty
+	while (nodestackpos)
+	{
+		// pop one off the stack to process
+		nodenum = nodestack[--nodestackpos];
+		// node
+		node = bih->nodes + nodenum;
+		if (node->type == BIH_UNORDERED)
+		{
+			for (nodeleafindex = 0;nodeleafindex < BIH_MAXUNORDEREDCHILDREN && node->children[nodeleafindex] >= 0;nodeleafindex++)
+			{
+				leaf = bih->leafs + node->children[nodeleafindex];
+				if (leaf->type != BIH_RENDERTRIANGLE)
+					continue;
+#if 1
+				if (!BoxesOverlap(info->lightmins, info->lightmaxs, leaf->mins, leaf->maxs))
+					continue;
+#endif
+#if 1
+				if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(leaf->mins, leaf->maxs, info->numfrustumplanes, info->frustumplanes))
+					continue;
+#endif
+				surfaceindex = leaf->surfaceindex;
+				surface = info->model->data_surfaces + surfaceindex;
+				currentmaterialflags = R_GetCurrentTexture(surface->texture)->currentmaterialflags;
+				castshadow = !(currentmaterialflags & MATERIALFLAG_NOSHADOW);
+				t = leaf->itemindex;
+				e = info->model->surfmesh.data_element3i + t * 3;
+				v[0] = info->model->surfmesh.data_vertex3f + e[0] * 3;
+				v[1] = info->model->surfmesh.data_vertex3f + e[1] * 3;
+				v[2] = info->model->surfmesh.data_vertex3f + e[2] * 3;
+				VectorCopy(v[0], v2[0]);
+				VectorCopy(v[1], v2[1]);
+				VectorCopy(v[2], v2[2]);
+				if (info->svbsp_insertoccluder)
+				{
+					if (castshadow)
+						SVBSP_AddPolygon(&r_svbsp, 3, v2[0], true, NULL, NULL, 0);
+					continue;
+				}
+				if (info->svbsp_active && !(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], false, NULL, NULL, 0) & 2))
+					continue;
+				// we don't occlude triangles from lighting even
+				// if they are backfacing, because when using
+				// shadowmapping they are often not fully occluded
+				// on the horizon of an edge
+				SETPVSBIT(info->outlighttrispvs, t);
+				if (castshadow)
+				{
+					if (noocclusion || (currentmaterialflags & MATERIALFLAG_NOCULLFACE))
+					{
+						// if the material is double sided we
+						// can't cull by direction
+						SETPVSBIT(info->outshadowtrispvs, t);
+					}
+					else if (frontsidecasting)
+					{
+						// front side casting occludes backfaces,
+						// so they are completely useless as both
+						// casters and lit polygons
+						if (PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
+							SETPVSBIT(info->outshadowtrispvs, t);
+					}
+					else
+					{
+						// back side casting does not occlude
+						// anything so we can't cull lit polygons
+						if (!PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
+							SETPVSBIT(info->outshadowtrispvs, t);
 					}
 				}
+				if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
+				{
+					SETPVSBIT(info->outsurfacepvs, surfaceindex);
+					info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
+				}
 			}
 		}
+		else
+		{
+			axis = node->type - BIH_SPLITX;
+#if 0
+			if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
+				continue;
+#endif
+#if 0
+			if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, rtlight->cached_numfrustumplanes, rtlight->cached_frustumplanes))
+				continue;
+#endif
+			if (info->lightmins[axis] <= node->backmax)
+			{
+				if (info->lightmaxs[axis] >= node->frontmin && nodestackpos < GETLIGHTINFO_MAXNODESTACK-1)
+					nodestack[nodestackpos++] = node->front;
+				nodestack[nodestackpos++] = node->back;
+				continue;
+			}
+			else if (info->lightmaxs[axis] >= node->frontmin)
+			{
+				nodestack[nodestackpos++] = node->front;
+				continue;
+			}
+			else
+				continue; // light falls between children, nothing here
+		}
 	}
 }
 
-void R_Q1BSP_CallRecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, qboolean use_svbsp)
+static void R_Q1BSP_CallRecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, qboolean use_svbsp)
 {
+	extern cvar_t r_shadow_usebihculling;
 	if (use_svbsp)
 	{
-		double origin[3];
+		float origin[3];
 		VectorCopy(info->relativelightorigin, origin);
-		if (!r_svbsp.nodes)
-		{
-			r_svbsp.maxnodes = max(r_svbsp.maxnodes, 1<<18);
-			r_svbsp.nodes = Mem_Alloc(r_main_mempool, r_svbsp.maxnodes * sizeof(svbsp_node_t));
-		}
+		r_svbsp.maxnodes = max(r_svbsp.maxnodes, 1<<12);
+		r_svbsp.nodes = (svbsp_node_t*) R_FrameData_Alloc(r_svbsp.maxnodes * sizeof(svbsp_node_t));
 		info->svbsp_active = true;
 		info->svbsp_insertoccluder = true;
 		for (;;)
 		{
 			SVBSP_Init(&r_svbsp, origin, r_svbsp.maxnodes, r_svbsp.nodes);
-			R_Q1BSP_RecursiveGetLightInfo(info, info->model->brush.data_nodes);
+			R_Q1BSP_RecursiveGetLightInfo_BSP(info, false);
 			// if that failed, retry with more nodes
 			if (r_svbsp.ranoutofnodes)
 			{
 				// an upper limit is imposed
 				if (r_svbsp.maxnodes >= 2<<22)
 					break;
-				Mem_Free(r_svbsp.nodes);
 				r_svbsp.maxnodes *= 2;
-				r_svbsp.nodes = Mem_Alloc(tempmempool, r_svbsp.maxnodes * sizeof(svbsp_node_t));
+				r_svbsp.nodes = (svbsp_node_t*) R_FrameData_Alloc(r_svbsp.maxnodes * sizeof(svbsp_node_t));
+				//Mem_Free(r_svbsp.nodes);
+				//r_svbsp.nodes = (svbsp_node_t*) Mem_Alloc(tempmempool, r_svbsp.maxnodes * sizeof(svbsp_node_t));
 			}
 			else
 				break;
 		}
-		// now clear the surfacepvs array because we need to redo it
-		memset(info->outsurfacepvs, 0, (info->model->nummodelsurfaces + 7) >> 3);
+		// now clear the visibility arrays because we need to redo it
+		info->outnumleafs = 0;
 		info->outnumsurfaces = 0;
+		memset(info->outleafpvs, 0, (info->model->brush.num_leafs + 7) >> 3);
+		memset(info->outsurfacepvs, 0, (info->model->nummodelsurfaces + 7) >> 3);
+		memset(info->outshadowtrispvs, 0, (info->model->surfmesh.num_triangles + 7) >> 3);
+		memset(info->outlighttrispvs, 0, (info->model->surfmesh.num_triangles + 7) >> 3);
 	}
 	else
 		info->svbsp_active = false;
@@ -827,18 +1175,46 @@ void R_Q1BSP_CallRecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, qboolean us
 	}
 
 	info->svbsp_insertoccluder = false;
-	R_Q1BSP_RecursiveGetLightInfo(info, info->model->brush.data_nodes);
-	if (developer.integer >= 100 && use_svbsp)
+	// use BIH culling on single leaf maps (generally this only happens if running a model as a map), otherwise use BSP culling to make use of vis data
+	if (r_shadow_usebihculling.integer > 0 && (r_shadow_usebihculling.integer == 2 || info->model->brush.num_leafs == 1) && info->model->render_bih.leafs != NULL)
+	{
+		R_Q1BSP_RecursiveGetLightInfo_BSP(info, true);
+		R_Q1BSP_RecursiveGetLightInfo_BIH(info, &info->model->render_bih);
+	}
+	else
+		R_Q1BSP_RecursiveGetLightInfo_BSP(info, false);
+	// we're using temporary framedata memory, so this pointer will be invalid soon, clear it
+	r_svbsp.nodes = NULL;
+	if (developer_extra.integer && use_svbsp)
 	{
-		Con_Printf("GetLightInfo: svbsp built with %i nodes, polygon stats:\n", r_svbsp.numnodes);
-		Con_Printf("occluders: %i accepted, %i rejected, %i fragments accepted, %i fragments rejected.\n", r_svbsp.stat_occluders_accepted, r_svbsp.stat_occluders_rejected, r_svbsp.stat_occluders_fragments_accepted, r_svbsp.stat_occluders_fragments_rejected);
-		Con_Printf("queries  : %i accepted, %i rejected, %i fragments accepted, %i fragments rejected.\n", r_svbsp.stat_queries_accepted, r_svbsp.stat_queries_rejected, r_svbsp.stat_queries_fragments_accepted, r_svbsp.stat_queries_fragments_rejected);
+		Con_DPrintf("GetLightInfo: svbsp built with %i nodes, polygon stats:\n", r_svbsp.numnodes);
+		Con_DPrintf("occluders: %i accepted, %i rejected, %i fragments accepted, %i fragments rejected.\n", r_svbsp.stat_occluders_accepted, r_svbsp.stat_occluders_rejected, r_svbsp.stat_occluders_fragments_accepted, r_svbsp.stat_occluders_fragments_rejected);
+		Con_DPrintf("queries  : %i accepted, %i rejected, %i fragments accepted, %i fragments rejected.\n", r_svbsp.stat_queries_accepted, r_svbsp.stat_queries_rejected, r_svbsp.stat_queries_fragments_accepted, r_svbsp.stat_queries_fragments_rejected);
 	}
 }
 
-void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, vec3_t outmins, vec3_t outmaxs, int *outleaflist, unsigned char *outleafpvs, int *outnumleafspointer, int *outsurfacelist, unsigned char *outsurfacepvs, int *outnumsurfacespointer, unsigned char *outshadowtrispvs, unsigned char *outlighttrispvs)
+static msurface_t *r_q1bsp_getlightinfo_surfaces;
+
+static int R_Q1BSP_GetLightInfo_comparefunc(const void *ap, const void *bp)
+{
+	int a = *(int*)ap;
+	int b = *(int*)bp;
+	const msurface_t *as = r_q1bsp_getlightinfo_surfaces + a;
+	const msurface_t *bs = r_q1bsp_getlightinfo_surfaces + b;
+	if (as->texture < bs->texture)
+		return -1;
+	if (as->texture > bs->texture)
+		return 1;
+	return a - b;
+}
+
+extern cvar_t r_shadow_sortsurfaces;
+
+void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, vec3_t outmins, vec3_t outmaxs, int *outleaflist, unsigned char *outleafpvs, int *outnumleafspointer, int *outsurfacelist, unsigned char *outsurfacepvs, int *outnumsurfacespointer, unsigned char *outshadowtrispvs, unsigned char *outlighttrispvs, unsigned char *visitingleafpvs, int numfrustumplanes, const mplane_t *frustumplanes, qboolean noocclusion)
 {
 	r_q1bsp_getlightinfo_t info;
+	info.frontsidecasting = r_shadow_frontsidecasting.integer != 0;
+	info.noocclusion = noocclusion || !info.frontsidecasting;
 	VectorCopy(relativelightorigin, info.relativelightorigin);
 	info.lightradius = lightradius;
 	info.lightmins[0] = info.relativelightorigin[0] - info.lightradius;
@@ -859,35 +1235,36 @@ void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, floa
 	info.outleaflist = outleaflist;
 	info.outleafpvs = outleafpvs;
 	info.outnumleafs = 0;
+	info.visitingleafpvs = visitingleafpvs;
 	info.outsurfacelist = outsurfacelist;
 	info.outsurfacepvs = outsurfacepvs;
 	info.outshadowtrispvs = outshadowtrispvs;
 	info.outlighttrispvs = outlighttrispvs;
 	info.outnumsurfaces = 0;
+	info.numfrustumplanes = numfrustumplanes;
+	info.frustumplanes = frustumplanes;
 	VectorCopy(info.relativelightorigin, info.outmins);
 	VectorCopy(info.relativelightorigin, info.outmaxs);
+	memset(visitingleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
 	memset(outleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
 	memset(outsurfacepvs, 0, (info.model->nummodelsurfaces + 7) >> 3);
-	if (info.model->brush.shadowmesh)
-		memset(outshadowtrispvs, 0, (info.model->brush.shadowmesh->numtriangles + 7) >> 3);
-	else
-		memset(outshadowtrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
+	memset(outshadowtrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
 	memset(outlighttrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
-	if (info.model->brush.GetPVS && r_shadow_frontsidecasting.integer)
+	if (info.model->brush.GetPVS && !info.noocclusion)
 		info.pvs = info.model->brush.GetPVS(info.model, info.relativelightorigin);
 	else
 		info.pvs = NULL;
-	R_UpdateAllTextureInfo(ent);
+	RSurf_ActiveModelEntity(r_refdef.scene.worldentity, false, false, false);
 
-	if (r_shadow_frontsidecasting.integer && r_shadow_compilingrtlight && r_shadow_realtime_world_compileportalculling.integer)
+	if (!info.noocclusion && r_shadow_compilingrtlight && r_shadow_realtime_world_compileportalculling.integer && info.model->brush.data_portals)
 	{
 		// use portal recursion for exact light volume culling, and exact surface checking
-		Portal_Visibility(info.model, info.relativelightorigin, info.outleaflist, info.outleafpvs, &info.outnumleafs, info.outsurfacelist, info.outsurfacepvs, &info.outnumsurfaces, NULL, 0, true, info.lightmins, info.lightmaxs, info.outmins, info.outmaxs, info.outshadowtrispvs, info.outlighttrispvs);
+		Portal_Visibility(info.model, info.relativelightorigin, info.outleaflist, info.outleafpvs, &info.outnumleafs, info.outsurfacelist, info.outsurfacepvs, &info.outnumsurfaces, NULL, 0, true, info.lightmins, info.lightmaxs, info.outmins, info.outmaxs, info.outshadowtrispvs, info.outlighttrispvs, info.visitingleafpvs);
 	}
-	else if (r_shadow_frontsidecasting.integer && r_shadow_realtime_dlight_portalculling.integer)
+	else if (!info.noocclusion && r_shadow_realtime_dlight_portalculling.integer && info.model->brush.data_portals)
 	{
 		// use portal recursion for exact light volume culling, but not the expensive exact surface checking
-		Portal_Visibility(info.model, info.relativelightorigin, info.outleaflist, info.outleafpvs, &info.outnumleafs, info.outsurfacelist, info.outsurfacepvs, &info.outnumsurfaces, NULL, 0, r_shadow_realtime_dlight_portalculling.integer >= 2, info.lightmins, info.lightmaxs, info.outmins, info.outmaxs, info.outshadowtrispvs, info.outlighttrispvs);
+		Portal_Visibility(info.model, info.relativelightorigin, info.outleaflist, info.outleafpvs, &info.outnumleafs, info.outsurfacelist, info.outsurfacepvs, &info.outnumsurfaces, NULL, 0, r_shadow_realtime_dlight_portalculling.integer >= 2, info.lightmins, info.lightmaxs, info.outmins, info.outmaxs, info.outshadowtrispvs, info.outlighttrispvs, info.visitingleafpvs);
 	}
 	else
 	{
@@ -895,9 +1272,11 @@ void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, floa
 		// optionally using svbsp for exact culling of compiled lights
 		// (or if the user enables dlight svbsp culling, which is mostly for
 		//  debugging not actual use)
-		R_Q1BSP_CallRecursiveGetLightInfo(&info, r_shadow_compilingrtlight ? r_shadow_realtime_world_compilesvbsp.integer : r_shadow_realtime_dlight_svbspculling.integer);
+		R_Q1BSP_CallRecursiveGetLightInfo(&info, !info.noocclusion && (r_shadow_compilingrtlight ? r_shadow_realtime_world_compilesvbsp.integer : r_shadow_realtime_dlight_svbspculling.integer) != 0);
 	}
 
+	rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveModelEntity
+
 	// limit combined leaf box to light boundaries
 	outmins[0] = max(info.outmins[0] - 1, info.lightmins[0]);
 	outmins[1] = max(info.outmins[1] - 1, info.lightmins[1]);
@@ -908,65 +1287,88 @@ void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, floa
 
 	*outnumleafspointer = info.outnumleafs;
 	*outnumsurfacespointer = info.outnumsurfaces;
+
+	// now sort surfaces by texture for faster rendering
+	r_q1bsp_getlightinfo_surfaces = info.model->data_surfaces;
+	if (r_shadow_sortsurfaces.integer)
+		qsort(info.outsurfacelist, info.outnumsurfaces, sizeof(*info.outsurfacelist), R_Q1BSP_GetLightInfo_comparefunc);
 }
 
-void R_Q1BSP_CompileShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativelightdirection, float lightradius, int numsurfaces, const int *surfacelist)
+void R_Q1BSP_CompileShadowMap(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativelightdirection, float lightradius, int numsurfaces, const int *surfacelist)
 {
-	model_t *model = ent->model;
+	dp_model_t *model = ent->model;
 	msurface_t *surface;
 	int surfacelistindex;
-	float projectdistance = relativelightdirection ? lightradius : lightradius + model->radius*2 + r_shadow_projectdistance.value;
-	r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Begin(r_main_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
-	R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
+	int sidetotals[6] = { 0, 0, 0, 0, 0, 0 }, sidemasks = 0;
+	int i;
+	// FIXME: the sidetotals code incorrectly assumes that static_meshchain is
+	// a single mesh - to prevent that from crashing (sideoffsets, sidetotals
+	// exceeding the number of triangles in a single mesh) we have to make sure
+	// that we make only a single mesh - so over-estimate the size of the mesh
+	// to match the model.
+	r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap = Mod_ShadowMesh_Begin(r_main_mempool, model->surfmesh.num_vertices, model->surfmesh.num_triangles);
+	R_Shadow_PrepareShadowSides(model->surfmesh.num_triangles);
 	for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 	{
 		surface = model->data_surfaces + surfacelist[surfacelistindex];
-		if (surface->texture->currentframe->basematerialflags & MATERIALFLAG_NOSHADOW)
-			continue;
-		R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, relativelightdirection, r_shadow_compilingrtlight->cullmins, r_shadow_compilingrtlight->cullmaxs, surface->mins, surface->maxs);
+		sidemasks |= R_Shadow_ChooseSidesFromBox(surface->num_firsttriangle, surface->num_triangles, model->surfmesh.data_vertex3f, model->surfmesh.data_element3i, &r_shadow_compilingrtlight->matrix_worldtolight, relativelightorigin, relativelightdirection, r_shadow_compilingrtlight->cullmins, r_shadow_compilingrtlight->cullmaxs, surface->mins, surface->maxs, surface->texture->basematerialflags & MATERIALFLAG_NOSHADOW ? NULL : sidetotals);
 	}
-	R_Shadow_VolumeFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, model->brush.shadowmesh->neighbor3i, relativelightorigin, relativelightdirection, projectdistance, numshadowmark, shadowmarklist);
-	r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Finish(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow, false, false, true);
+	R_Shadow_ShadowMapFromList(model->surfmesh.num_vertices, model->surfmesh.num_triangles, model->surfmesh.data_vertex3f, model->surfmesh.data_element3i, numshadowsides, sidetotals, shadowsides, shadowsideslist);
+	r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap = Mod_ShadowMesh_Finish(r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap, true);
+	r_shadow_compilingrtlight->static_shadowmap_receivers &= sidemasks;
+	for(i = 0;i<6;i++)
+		if(!sidetotals[i])
+			r_shadow_compilingrtlight->static_shadowmap_casters &= ~(1 << i);
 }
 
-void R_Q1BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativelightdirection, float lightradius, int modelnumsurfaces, const int *modelsurfacelist, const vec3_t lightmins, const vec3_t lightmaxs)
+#define RSURF_MAX_BATCHSURFACES 8192
+
+static const msurface_t *batchsurfacelist[RSURF_MAX_BATCHSURFACES];
+
+void R_Q1BSP_DrawShadowMap(int side, entity_render_t *ent, const vec3_t relativelightorigin, const vec3_t relativelightdirection, float lightradius, int modelnumsurfaces, const int *modelsurfacelist, const unsigned char *surfacesides, const vec3_t lightmins, const vec3_t lightmaxs)
 {
-	model_t *model = ent->model;
-	msurface_t *surface;
-	int modelsurfacelistindex;
-	float projectdistance = relativelightdirection ? lightradius : lightradius + model->radius*2 + r_shadow_projectdistance.value;
+	dp_model_t *model = ent->model;
+	const msurface_t *surface;
+	int modelsurfacelistindex, batchnumsurfaces;
 	// check the box in modelspace, it was already checked in worldspace
 	if (!BoxesOverlap(model->normalmins, model->normalmaxs, lightmins, lightmaxs))
 		return;
-	R_UpdateAllTextureInfo(ent);
-	if (model->brush.shadowmesh)
+	R_FrameData_SetMark();
+	// identify lit faces within the bounding box
+	for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
 	{
-		R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
-		for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
+		surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
+		if (surfacesides && !(surfacesides[modelsurfacelistindex] && (1 << side)))
+			continue;
+		rsurface.texture = R_GetCurrentTexture(surface->texture);
+		if (rsurface.texture->currentmaterialflags & MATERIALFLAG_NOSHADOW)
+			continue;
+		if (!BoxesOverlap(lightmins, lightmaxs, surface->mins, surface->maxs))
+			continue;
+		r_refdef.stats[r_stat_lights_dynamicshadowtriangles] += surface->num_triangles;
+		r_refdef.stats[r_stat_lights_shadowtriangles] += surface->num_triangles;
+		batchsurfacelist[0] = surface;
+		batchnumsurfaces = 1;
+		while(++modelsurfacelistindex < modelnumsurfaces && batchnumsurfaces < RSURF_MAX_BATCHSURFACES)
 		{
 			surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
-			if (surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW)
+			if (surfacesides && !(surfacesides[modelsurfacelistindex] & (1 << side)))
 				continue;
-			R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, relativelightdirection, lightmins, lightmaxs, surface->mins, surface->maxs);
-		}
-		R_Shadow_VolumeFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, model->brush.shadowmesh->neighbor3i, relativelightorigin, relativelightdirection, projectdistance, numshadowmark, shadowmarklist);
-	}
-	else
-	{
-		projectdistance = lightradius + model->radius*2;
-		R_Shadow_PrepareShadowMark(model->surfmesh.num_triangles);
-		// identify lit faces within the bounding box
-		for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
-		{
-			surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
-			rsurface_texture = surface->texture->currentframe;
-			if (rsurface_texture->currentmaterialflags & MATERIALFLAG_NOSHADOW)
+			if (surface->texture != batchsurfacelist[0]->texture)
+				break;
+			if (!BoxesOverlap(lightmins, lightmaxs, surface->mins, surface->maxs))
 				continue;
-			RSurf_PrepareVerticesForBatch(false, false, 1, &surface);
-			R_Shadow_MarkVolumeFromBox(surface->num_firsttriangle, surface->num_triangles, rsurface_vertex3f, rsurface_model->surfmesh.data_element3i, relativelightorigin, relativelightdirection, lightmins, lightmaxs, surface->mins, surface->maxs);
+			r_refdef.stats[r_stat_lights_dynamicshadowtriangles] += surface->num_triangles;
+			r_refdef.stats[r_stat_lights_shadowtriangles] += surface->num_triangles;
+			batchsurfacelist[batchnumsurfaces++] = surface;
 		}
-		R_Shadow_VolumeFromList(model->surfmesh.num_vertices, model->surfmesh.num_triangles, rsurface_vertex3f, model->surfmesh.data_element3i, model->surfmesh.data_neighbor3i, relativelightorigin, relativelightdirection, projectdistance, numshadowmark, shadowmarklist);
+		--modelsurfacelistindex;
+		GL_CullFace(rsurface.texture->currentmaterialflags & MATERIALFLAG_NOCULLFACE ? GL_NONE : r_refdef.view.cullface_back);
+		RSurf_PrepareVerticesForBatch(BATCHNEED_ARRAY_VERTEX | BATCHNEED_ALLOWMULTIDRAW, batchnumsurfaces, batchsurfacelist);
+		R_Mesh_PrepareVertices_Vertex3f(rsurface.batchnumvertices, rsurface.batchvertex3f, rsurface.batchvertex3f_vertexbuffer, rsurface.batchvertex3f_bufferoffset);
+		RSurf_DrawBatch();
 	}
+	R_FrameData_ReturnToMark();
 }
 
 #define BATCHSIZE 1024
@@ -975,50 +1377,42 @@ static void R_Q1BSP_DrawLight_TransparentCallback(const entity_render_t *ent, co
 {
 	int i, j, endsurface;
 	texture_t *t;
-	msurface_t *surface;
-	// note: in practice this never actually receives batches), oh well
+	const msurface_t *surface;
+	R_FrameData_SetMark();
+	// note: in practice this never actually receives batches
 	R_Shadow_RenderMode_Begin();
-	R_Shadow_RenderMode_ActiveLight((rtlight_t *)rtlight);
-	R_Shadow_RenderMode_Lighting(false, true);
+	R_Shadow_RenderMode_ActiveLight(rtlight);
+	R_Shadow_RenderMode_Lighting(true, rtlight->shadowmapatlassidesize != 0, (ent->flags & RENDER_NOSELFSHADOW) != 0);
 	R_Shadow_SetupEntityLight(ent);
 	for (i = 0;i < numsurfaces;i = j)
 	{
 		j = i + 1;
-		surface = rsurface_model->data_surfaces + surfacelist[i];
+		surface = rsurface.modelsurfaces + surfacelist[i];
 		t = surface->texture;
-		R_UpdateTextureInfo(ent, t);
-		rsurface_texture = t->currentframe;
+		rsurface.texture = R_GetCurrentTexture(t);
 		endsurface = min(j + BATCHSIZE, numsurfaces);
 		for (j = i;j < endsurface;j++)
 		{
-			surface = rsurface_model->data_surfaces + surfacelist[j];
+			surface = rsurface.modelsurfaces + surfacelist[j];
 			if (t != surface->texture)
 				break;
-			RSurf_PrepareVerticesForBatch(true, true, 1, &surface);
-			R_Shadow_RenderLighting(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, ent->model->surfmesh.data_element3i + surface->num_firsttriangle * 3, ent->model->surfmesh.ebo, (sizeof(int[3]) * surface->num_firsttriangle));
+			R_Shadow_RenderLighting(1, &surface);
 		}
 	}
 	R_Shadow_RenderMode_End();
+	R_FrameData_ReturnToMark();
 }
 
-#define RSURF_MAX_BATCHSURFACES 1024
-
-void R_Q1BSP_DrawLight(entity_render_t *ent, int numsurfaces, const int *surfacelist, const unsigned char *trispvs)
+extern qboolean r_shadow_usingdeferredprepass;
+void R_Q1BSP_DrawLight(entity_render_t *ent, int numsurfaces, const int *surfacelist, const unsigned char *lighttrispvs)
 {
-	model_t *model = ent->model;
-	msurface_t *surface;
-	int i, k, l, m, mend, endsurface, batchnumsurfaces, batchnumtriangles, batchfirstvertex, batchlastvertex;
-	qboolean usebufferobject, culltriangles;
-	const int *element3i;
-	msurface_t *batchsurfacelist[RSURF_MAX_BATCHSURFACES];
-	int batchelements[BATCHSIZE*3];
+	dp_model_t *model = ent->model;
+	const msurface_t *surface;
+	int i, k, kend, l, endsurface, batchnumsurfaces, texturenumsurfaces;
+	const msurface_t **texturesurfacelist;
 	texture_t *tex;
 	CHECKGLERROR
-	RSurf_ActiveModelEntity(ent, true, true);
-	R_UpdateAllTextureInfo(ent);
-	CHECKGLERROR
-	culltriangles = r_shadow_culltriangles.integer && !(ent->flags & RENDER_NOSELFSHADOW);
-	element3i = rsurface_model->surfmesh.data_element3i;
+	R_FrameData_SetMark();
 	// this is a double loop because non-visible surface skipping has to be
 	// fast, and even if this is not the world model (and hence no visibility
 	// checking) the input surface list and batch buffer are different formats
@@ -1027,10 +1421,10 @@ void R_Q1BSP_DrawLight(entity_render_t *ent, int numsurfaces, const int *surface
 	{
 		batchnumsurfaces = 0;
 		endsurface = min(i + RSURF_MAX_BATCHSURFACES, numsurfaces);
-		if (ent == r_refdef.worldentity)
+		if (ent == r_refdef.scene.worldentity)
 		{
 			for (;i < endsurface;i++)
-				if (r_viewcache.world_surfacevisible[surfacelist[i]])
+				if (r_refdef.viewcache.world_surfacevisible[surfacelist[i]])
 					batchsurfacelist[batchnumsurfaces++] = model->data_surfaces + surfacelist[i];
 		}
 		else
@@ -1040,104 +1434,73 @@ void R_Q1BSP_DrawLight(entity_render_t *ent, int numsurfaces, const int *surface
 		}
 		if (!batchnumsurfaces)
 			continue;
-		for (k = 0;k < batchnumsurfaces;k = l)
+		for (k = 0;k < batchnumsurfaces;k = kend)
 		{
 			surface = batchsurfacelist[k];
 			tex = surface->texture;
-			rsurface_texture = tex->currentframe;
-			if (rsurface_texture->currentmaterialflags & (MATERIALFLAG_WALL | MATERIALFLAG_WATER))
+			rsurface.texture = R_GetCurrentTexture(tex);
+			// gather surfaces into a batch range
+			for (kend = k;kend < batchnumsurfaces && tex == batchsurfacelist[kend]->texture;kend++)
+				;
+			// now figure out what to do with this particular range of surfaces
+			// VorteX: added MATERIALFLAG_NORTLIGHT
+			if ((rsurface.texture->currentmaterialflags & (MATERIALFLAG_WALL | MATERIALFLAG_NORTLIGHT)) != MATERIALFLAG_WALL)
+				continue;
+			if (r_fb.water.renderingscene && (rsurface.texture->currentmaterialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA)))
+				continue;
+			if (rsurface.texture->currentmaterialflags & MATERIALFLAGMASK_DEPTHSORTED)
 			{
-				if (rsurface_texture->currentmaterialflags & MATERIALFLAGMASK_DEPTHSORTED)
+				vec3_t tempcenter, center;
+				for (l = k;l < kend;l++)
 				{
-					vec3_t tempcenter, center;
-					for (l = k;l < batchnumsurfaces && tex == batchsurfacelist[l]->texture;l++)
+					surface = batchsurfacelist[l];
+					if (r_transparent_sortsurfacesbynearest.integer)
+					{
+						tempcenter[0] = bound(surface->mins[0], rsurface.localvieworigin[0], surface->maxs[0]);
+						tempcenter[1] = bound(surface->mins[1], rsurface.localvieworigin[1], surface->maxs[1]);
+						tempcenter[2] = bound(surface->mins[2], rsurface.localvieworigin[2], surface->maxs[2]);
+					}
+					else
 					{
-						surface = batchsurfacelist[l];
 						tempcenter[0] = (surface->mins[0] + surface->maxs[0]) * 0.5f;
 						tempcenter[1] = (surface->mins[1] + surface->maxs[1]) * 0.5f;
 						tempcenter[2] = (surface->mins[2] + surface->maxs[2]) * 0.5f;
-						Matrix4x4_Transform(&rsurface_matrix, tempcenter, center);
-						R_MeshQueue_AddTransparent(rsurface_texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST ? r_view.origin : center, R_Q1BSP_DrawLight_TransparentCallback, ent, surface - rsurface_model->data_surfaces, r_shadow_rtlight);
 					}
-				}
-				else
-				{
-					// use the bufferobject if all triangles are accepted
-					usebufferobject = true;
-					batchnumtriangles = 0;
-					// note: this only accepts consecutive surfaces because
-					// non-consecutive surfaces often have extreme vertex
-					// ranges (due to large numbers of surfaces omitted
-					// between them)
-					surface = batchsurfacelist[k];
-					for (l = k;l < batchnumsurfaces && surface == batchsurfacelist[l] && tex == surface->texture;l++, surface++)
+					Matrix4x4_Transform(&rsurface.matrix, tempcenter, center);
+					if (ent->transparent_offset) // transparent offset
 					{
-						RSurf_PrepareVerticesForBatch(true, true, 1, &surface);
-						for (m = surface->num_firsttriangle, mend = m + surface->num_triangles;m < mend;m++)
-						{
-							if (culltriangles)
-							{
-								if (trispvs)
-								{
-									if (!CHECKPVSBIT(trispvs, m))
-									{
-										usebufferobject = false;
-										continue;
-									}
-								}
-								else
-								{
-									if (r_shadow_frontsidecasting.integer && !PointInfrontOfTriangle(r_shadow_entitylightorigin, rsurface_vertex3f + element3i[m*3+0]*3, rsurface_vertex3f + element3i[m*3+1]*3, rsurface_vertex3f + element3i[m*3+2]*3))
-									{
-										usebufferobject = false;
-										continue;
-									}
-								}
-							}
-							batchelements[batchnumtriangles*3+0] = element3i[m*3+0];
-							batchelements[batchnumtriangles*3+1] = element3i[m*3+1];
-							batchelements[batchnumtriangles*3+2] = element3i[m*3+2];
-							batchnumtriangles++;
-							r_refdef.stats.lights_lighttriangles++;
-							if (batchnumtriangles >= BATCHSIZE)
-							{
-								Mod_VertexRangeFromElements(batchnumtriangles*3, batchelements, &batchfirstvertex, &batchlastvertex);
-								R_Shadow_RenderLighting(batchfirstvertex, batchlastvertex + 1 - batchfirstvertex, batchnumtriangles, batchelements, 0, 0);
-								batchnumtriangles = 0;
-								usebufferobject = false;
-							}
-						}
-						r_refdef.stats.lights_lighttriangles += batchsurfacelist[l]->num_triangles;
-					}
-					if (batchnumtriangles > 0)
-					{
-						Mod_VertexRangeFromElements(batchnumtriangles*3, batchelements, &batchfirstvertex, &batchlastvertex);
-						if (usebufferobject)
-							R_Shadow_RenderLighting(batchfirstvertex, batchlastvertex + 1 - batchfirstvertex, batchnumtriangles, batchelements, ent->model->surfmesh.ebo, sizeof(int[3]) * batchsurfacelist[k]->num_firsttriangle);
-						else
-							R_Shadow_RenderLighting(batchfirstvertex, batchlastvertex + 1 - batchfirstvertex, batchnumtriangles, batchelements, 0, 0);
+						center[0] += r_refdef.view.forward[0]*ent->transparent_offset;
+						center[1] += r_refdef.view.forward[1]*ent->transparent_offset;
+						center[2] += r_refdef.view.forward[2]*ent->transparent_offset;
 					}
+					R_MeshQueue_AddTransparent((rsurface.entity->flags & RENDER_WORLDOBJECT) ? TRANSPARENTSORT_SKY : ((rsurface.texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST) ? TRANSPARENTSORT_HUD : rsurface.texture->transparentsort), center, R_Q1BSP_DrawLight_TransparentCallback, ent, surface - rsurface.modelsurfaces, rsurface.rtlight);
 				}
+				continue;
 			}
-			else
-			{
-				// skip ahead to the next texture
-				for (l = k;l < batchnumsurfaces && tex == batchsurfacelist[l]->texture;l++)
-					;
-			}
+			if (r_shadow_usingdeferredprepass)
+				continue;
+			texturenumsurfaces = kend - k;
+			texturesurfacelist = batchsurfacelist + k;
+			R_Shadow_RenderLighting(texturenumsurfaces, texturesurfacelist);
 		}
 	}
+	R_FrameData_ReturnToMark();
 }
 
 //Made by [515]
-void R_ReplaceWorldTexture (void)
+static void R_ReplaceWorldTexture (void)
 {
-	model_t		*m;
+	dp_model_t		*m;
 	texture_t	*t;
 	int			i;
 	const char	*r, *newt;
 	skinframe_t *skinframe;
-	m = r_refdef.worldmodel;
+	if (!r_refdef.scene.worldmodel)
+	{
+		Con_Printf("There is no worldmodel\n");
+		return;
+	}
+	m = r_refdef.scene.worldmodel;
 
 	if(Cmd_Argc() < 2)
 	{
@@ -1156,13 +1519,13 @@ void R_ReplaceWorldTexture (void)
 		newt = r;
 	for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
 	{
-		if(t->width && !strcasecmp(t->name, r))
+		if(/*t->width && !strcasecmp(t->name, r)*/ matchpattern( t->name, r, true ) )
 		{
-			if ((skinframe = R_SkinFrame_LoadExternal((char*)newt, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, true)))
+			if ((skinframe = R_SkinFrame_LoadExternal(newt, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PICMIP, true, false)))
 			{
-				t->skinframes[0] = skinframe;
+//				t->skinframes[0] = skinframe;
+				t->currentskinframe = skinframe;
 				Con_Printf("%s replaced with %s\n", r, newt);
-				return;
 			}
 			else
 			{
@@ -1174,16 +1537,21 @@ void R_ReplaceWorldTexture (void)
 }
 
 //Made by [515]
-void R_ListWorldTextures (void)
+static void R_ListWorldTextures (void)
 {
-	model_t		*m;
+	dp_model_t		*m;
 	texture_t	*t;
 	int			i;
-	m = r_refdef.worldmodel;
+	if (!r_refdef.scene.worldmodel)
+	{
+		Con_Printf("There is no worldmodel\n");
+		return;
+	}
+	m = r_refdef.scene.worldmodel;
 
 	Con_Print("Worldmodel textures :\n");
 	for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
-		if (t->numskinframes)
+		if (t->name[0] && strcasecmp(t->name, "NO TEXTURE FOUND"))
 			Con_Printf("%s\n", t->name);
 }
 
@@ -1208,6 +1576,15 @@ void GL_Surf_Init(void)
 	Cvar_RegisterVariable(&r_lockpvs);
 	Cvar_RegisterVariable(&r_lockvisibility);
 	Cvar_RegisterVariable(&r_useportalculling);
+	Cvar_RegisterVariable(&r_usesurfaceculling);
+	Cvar_RegisterVariable(&r_vis_trace);
+	Cvar_RegisterVariable(&r_vis_trace_samples);
+	Cvar_RegisterVariable(&r_vis_trace_delay);
+	Cvar_RegisterVariable(&r_vis_trace_eyejitter);
+	Cvar_RegisterVariable(&r_vis_trace_enlarge);
+	Cvar_RegisterVariable(&r_vis_trace_expand);
+	Cvar_RegisterVariable(&r_vis_trace_pad);
+	Cvar_RegisterVariable(&r_vis_trace_surfaces);
 	Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
 
 	Cmd_AddCommand ("r_replacemaptexture", R_ReplaceWorldTexture, "override a map texture for testing purposes");