X-Git-Url: http://de.git.xonotic.org/?p=xonotic%2Fdarkplaces.git;a=blobdiff_plain;f=gl_rsurf.c;h=9a848f879fccf6a24efde1d866c8efee35a0ba99;hp=839cf24acdae33e5f9909ec9baac4fac0dea130f;hb=7fe21433f8c26bd2442ab72707f7f6063c1932e7;hpb=902f14e9a4773dd27a338562511f418763b903f7

diff --git a/gl_rsurf.c b/gl_rsurf.c
index 839cf24a..9a848f87 100644
--- a/gl_rsurf.c
+++ b/gl_rsurf.c
@@ -25,23 +25,11 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 #define MAX_LIGHTMAP_SIZE 256
 
-cvar_t r_ambient = {0, "r_ambient", "0"};
-cvar_t r_drawportals = {0, "r_drawportals", "0"};
-cvar_t r_testvis = {0, "r_testvis", "0"};
-cvar_t r_detailtextures = {CVAR_SAVE, "r_detailtextures", "1"};
-cvar_t r_surfaceworldnode = {0, "r_surfaceworldnode", "0"};
-cvar_t r_drawcollisionbrushes_polygonfactor = {0, "r_drawcollisionbrushes_polygonfactor", "-1"};
-cvar_t r_drawcollisionbrushes_polygonoffset = {0, "r_drawcollisionbrushes_polygonoffset", "0"};
-cvar_t r_q3bsp_renderskydepth = {0, "r_q3bsp_renderskydepth", "0"};
-
-// flag arrays used for visibility checking on world model
-// (all other entities have no per-surface/per-leaf visibility checks)
-// TODO: dynamic resize according to r_refdef.worldmodel->brush.num_clusters
-qbyte r_pvsbits[(32768+7)>>3];
-// TODO: dynamic resize according to r_refdef.worldmodel->brush.num_leafs
-qbyte r_worldleafvisible[32768];
-// TODO: dynamic resize according to r_refdef.worldmodel->num_surfaces
-qbyte r_worldsurfacevisible[262144];
+cvar_t r_ambient = {0, "r_ambient", "0", "brighter world cheat (not allowed in multiplayer), 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_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"};
 
 /*
 ===============
@@ -52,11 +40,12 @@ Combine and scale multiple lightmaps into the 8.8 format in blocklights
 */
 void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
 {
-	int smax, tmax, i, j, size, size3, maps, stride, l;
-	unsigned int *bl, scale;
-	qbyte *lightmap, *out, *stain;
-	static unsigned int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
-	static qbyte templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
+	int smax, tmax, i, size, size3, maps, l;
+	int *bl, scale;
+	unsigned char *lightmap, *out, *stain;
+	model_t *model = ent->model;
+	static int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
+	static unsigned char templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
 
 	// update cached lighting info
 	surface->cached_dlight = 0;
@@ -69,7 +58,7 @@ void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
 
 // set to full bright if no light data
 	bl = intblocklights;
-	if (!ent->model->brushq1.lightdata)
+	if (!model->brushq1.lightdata)
 	{
 		for (i = 0;i < size3;i++)
 			bl[i] = 255*256;
@@ -77,16 +66,13 @@ void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
 	else
 	{
 // clear to no light
-		memset(bl, 0, size*3*sizeof(unsigned int));
+		memset(bl, 0, size3*sizeof(*bl));
 
 // add all the lightmaps
 		if (lightmap)
-		{
-			bl = intblocklights;
 			for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3)
-				for (scale = d_lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size3;i++)
+				for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size3;i++)
 					bl[i] += lightmap[i] * scale;
-		}
 	}
 
 	stain = surface->lightmapinfo->stainsamples;
@@ -96,35 +82,80 @@ 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 (ent->model->brushq1.lightmaprgba)
+	if (model->brushq1.lightmaprgba)
 	{
-		stride = (surface->lightmapinfo->lightmaptexturestride - smax) * 4;
-		for (i = 0;i < tmax;i++, out += stride)
+		for (i = 0;i < size;i++)
 		{
-			for (j = 0;j < smax;j++)
-			{
-				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++ * *stain++) >> 16;*out++ = min(l, 255);
+			l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
+			l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
+			*out++ = 255;
 		}
 	}
 	else
 	{
-		stride = (surface->lightmapinfo->lightmaptexturestride - smax) * 3;
-		for (i = 0;i < tmax;i++, out += stride)
+		for (i = 0;i < size;i++)
+		{
+			l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
+			l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
+			l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
+		}
+	}
+
+	R_UpdateTexture(surface->lightmaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
+
+	// update the surface's deluxemap if it has one
+	if (surface->deluxemaptexture != r_texture_blanknormalmap)
+	{
+		vec3_t n;
+		unsigned char *normalmap = surface->lightmapinfo->nmapsamples;
+		lightmap = surface->lightmapinfo->samples;
+		// clear to no normalmap
+		bl = intblocklights;
+		memset(bl, 0, size3*sizeof(*bl));
+		// add all the normalmaps
+		if (lightmap && normalmap)
+		{
+			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++)
+				{
+					// add the normalmap with weighting proportional to the style's lightmap intensity
+					l = (int)(VectorLength(lightmap + i*3) * scale);
+					bl[i*3+0] += ((int)normalmap[i*3+0] - 128) * l;
+					bl[i*3+1] += ((int)normalmap[i*3+1] - 128) * l;
+					bl[i*3+2] += ((int)normalmap[i*3+2] - 128) * l;
+				}
+			}
+		}
+		bl = intblocklights;
+		out = templight;
+		// we simply renormalize the weighted normals to get a valid deluxemap
+		if (model->brushq1.lightmaprgba)
 		{
-			for (j = 0;j < smax;j++)
+			for (i = 0;i < size;i++, bl += 3)
 			{
-				l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
-				l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
-				l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
+				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)
+			{
+				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);
+			}
+		}
+		R_UpdateTexture(surface->deluxemaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
 	}
-
-	R_UpdateTexture(surface->lightmaptexture, templight);
 }
 
 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
@@ -132,7 +163,7 @@ void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radi
 	float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 	msurface_t *surface, *endsurface;
 	int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
-	qbyte *bl;
+	unsigned char *bl;
 	vec3_t impact;
 
 	maxdist = radius * radius;
@@ -175,12 +206,12 @@ loc0:
 			smax = (surface->lightmapinfo->extents[0] >> 4) + 1;
 			tmax = (surface->lightmapinfo->extents[1] >> 4) + 1;
 
-			impacts = DotProduct (impact, surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3] - surface->lightmapinfo->texturemins[0];
-			impactt = DotProduct (impact, surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3] - surface->lightmapinfo->texturemins[1];
+			impacts = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3] - surface->lightmapinfo->texturemins[0]);
+			impactt = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3] - surface->lightmapinfo->texturemins[1]);
 
 			s = bound(0, impacts, smax * 16) - impacts;
 			t = bound(0, impactt, tmax * 16) - impactt;
-			i = s * s + t * t + dist2;
+			i = (int)(s * s + t * t + dist2);
 			if (i > maxdist)
 				continue;
 
@@ -210,9 +241,9 @@ loc0:
 							{
 								if (a > 1)
 									a = 1;
-								bl[0] = (qbyte) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
-								bl[1] = (qbyte) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
-								bl[2] = (qbyte) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
+								bl[0] = (unsigned char) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
+								bl[1] = (unsigned char) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
+								bl[2] = (unsigned char) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
 								stained = true;
 							}
 						}
@@ -270,13 +301,12 @@ void R_Stain (const vec3_t origin, float radius, int cr1, int cg1, int cb1, int
 	R_StainNode(r_refdef.worldmodel->brush.data_nodes + r_refdef.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.worldmodel, origin, radius, fcolor);
 
 	// look for embedded bmodels
-	for (n = 0;n < cl_num_brushmodel_entities;n++)
+	for (n = 0;n < cl.num_brushmodel_entities;n++)
 	{
-		ent = &cl_entities[cl_brushmodel_entities[n]].render;
+		ent = &cl.entities[cl.brushmodel_entities[n]].render;
 		model = ent->model;
 		if (model && model->name[0] == '*')
 		{
-			Mod_CheckLoaded(model);
 			if (model->brush.data_nodes)
 			{
 				Matrix4x4_Transform(&ent->inversematrix, origin, org);
@@ -295,43 +325,42 @@ void R_Stain (const vec3_t origin, float radius, int cr1, int cg1, int cb1, int
 =============================================================
 */
 
-static void R_DrawPortal_Callback(const void *calldata1, int calldata2)
+static void R_DrawPortal_Callback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
 {
-	int i;
+	// due to the hacky nature of this function's parameters, this is never
+	// 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;
+	int i, numpoints;
 	float *v;
-	rmeshstate_t m;
-	const mportal_t *portal = calldata1;
+	float vertex3f[POLYGONELEMENTS_MAXPOINTS*3];
+	CHECKGLERROR
 	GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 	GL_DepthMask(false);
 	GL_DepthTest(true);
-	R_Mesh_Matrix(&r_identitymatrix);
+	GL_CullFace(GL_NONE);
+	R_Mesh_Matrix(&identitymatrix);
+
+	numpoints = min(portal->numpoints, POLYGONELEMENTS_MAXPOINTS);
 
-	memset(&m, 0, sizeof(m));
-	m.pointer_vertex = varray_vertex3f;
-	R_Mesh_State(&m);
+	R_Mesh_VertexPointer(vertex3f);
+	R_Mesh_ColorPointer(NULL);
+	R_Mesh_ResetTextureState();
 
-	i = calldata2;
-	GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f),
-			 ((i & 0x0038) >> 3) * (1.0f / 7.0f),
-			 ((i & 0x01C0) >> 6) * (1.0f / 7.0f),
+	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);
-	if (PlaneDiff(r_vieworigin, (&portal->plane)) < 0)
-	{
-		for (i = portal->numpoints - 1, v = varray_vertex3f;i >= 0;i--, v += 3)
-			VectorCopy(portal->points[i].position, v);
-	}
-	else
-		for (i = 0, v = varray_vertex3f;i < portal->numpoints;i++, v += 3)
-			VectorCopy(portal->points[i].position, v);
-	GL_LockArrays(0, portal->numpoints);
-	R_Mesh_Draw(0, portal->numpoints, portal->numpoints - 2, polygonelements);
-	GL_LockArrays(0, 0);
+	for (i = 0, v = vertex3f;i < numpoints;i++, v += 3)
+		VectorCopy(portal->points[i].position, v);
+	R_Mesh_Draw(0, numpoints, numpoints - 2, polygonelements);
 }
 
 // LordHavoc: this is just a nice debugging tool, very slow
-static void R_DrawPortals(void)
+void R_DrawPortals(void)
 {
-	int i, leafnum;//, portalnum;
+	int i, leafnum;
 	mportal_t *portal;
 	float center[3], f;
 	model_t *model = r_refdef.worldmodel;
@@ -339,7 +368,7 @@ static void R_DrawPortals(void)
 		return;
 	for (leafnum = 0;leafnum < r_refdef.worldmodel->brush.num_leafs;leafnum++)
 	{
-		if (r_worldleafvisible[leafnum])
+		if (r_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)
@@ -352,45 +381,14 @@ static 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, portal, portalnum);
-					R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, portal, leafnum);
+					R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, (entity_render_t *)portal, leafnum, r_shadow_rtlight);
 				}
 			}
 		}
 	}
 }
 
-static void R_DrawCollisionBrush(colbrushf_t *brush)
-{
-	int i;
-	rmeshstate_t m;
-	memset(&m, 0, sizeof(m));
-	m.pointer_vertex = brush->points->v;
-	R_Mesh_State(&m);
-	i = (int)(((size_t)brush) / sizeof(colbrushf_t));
-	GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
-	GL_LockArrays(0, brush->numpoints);
-	R_Mesh_Draw(0, brush->numpoints, brush->numtriangles, brush->elements);
-	GL_LockArrays(0, 0);
-}
-
-static void R_DrawCollisionSurface(entity_render_t *ent, msurface_t *surface)
-{
-	int i;
-	rmeshstate_t m;
-	if (!surface->num_collisiontriangles)
-		return;
-	memset(&m, 0, sizeof(m));
-	m.pointer_vertex = surface->data_collisionvertex3f;
-	R_Mesh_State(&m);
-	i = (int)(((size_t)surface) / sizeof(msurface_t));
-	GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
-	GL_LockArrays(0, surface->num_collisionvertices);
-	R_Mesh_Draw(0, surface->num_collisionvertices, surface->num_collisiontriangles, surface->data_collisionelement3i);
-	GL_LockArrays(0, 0);
-}
-
-void R_WorldVisibility(void)
+void R_View_WorldVisibility(void)
 {
 	int i, j, *mark;
 	mleaf_t *leaf;
@@ -401,106 +399,121 @@ void R_WorldVisibility(void)
 		return;
 
 	// if possible find the leaf the view origin is in
-	viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_vieworigin) : NULL;
+	viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_view.origin) : NULL;
 	// if possible fetch the visible cluster bits
-	if (model->brush.FatPVS)
-		model->brush.FatPVS(model, r_vieworigin, 2, r_pvsbits, sizeof(r_pvsbits));
+	if (!r_lockpvs.integer && model->brush.FatPVS)
+		model->brush.FatPVS(model, r_view.origin, 2, r_viewcache.world_pvsbits, sizeof(r_viewcache.world_pvsbits));
 
-	// clear the visible surface and leaf flags arrays
-	memset(r_worldsurfacevisible, 0, model->num_surfaces);
-	memset(r_worldleafvisible, 0, model->brush.num_leafs);
-
-	// if the user prefers surfaceworldnode (testing?) or the viewleaf could
-	// not be found, or the viewleaf is not part of the visible world
-	// (floating around in the void), use the pvs method
-	if (r_surfaceworldnode.integer || !viewleaf || viewleaf->clusterindex < 0)
+	if (!r_lockvisibility.integer)
 	{
-		// pvs method:
-		// similar to quake's RecursiveWorldNode but without cache misses
-		for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
+		// 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);
+
+		r_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 leaf is in current pvs and on the screen, mark its surfaces
-			if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
+			// 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;
+			for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 			{
-				c_leafs++;
-				r_worldleafvisible[j] = true;
-				if (leaf->numleafsurfaces)
-					for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
-						r_worldsurfacevisible[*mark] = true;
+				// 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;
+					if (leaf->numleafsurfaces)
+						for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
+							r_viewcache.world_surfacevisible[*mark] = true;
+				}
 			}
 		}
-	}
-	else
-	{
-		int leafstackpos;
-		mportal_t *p;
-		mleaf_t *leafstack[8192];
-		// portal method:
-		// follows portals leading outward from viewleaf, does not venture
-		// offscreen or into leafs that are not visible, faster than Quake's
-		// RecursiveWorldNode and vastly better in unvised maps, often culls a
-		// lot of surface that pvs alone would miss
-		leafstack[0] = viewleaf;
-		leafstackpos = 1;
-		while (leafstackpos)
+		// 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)
+		{
+			// pvs method:
+			// simply check if each leaf is in the Potentially Visible Set,
+			// and cull to frustum (view pyramid)
+			// 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 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))
+				{
+					r_refdef.stats.world_leafs++;
+					r_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;
+				}
+			}
+		}
+		// otherwise use a recursive portal flow, culling each portal to
+		// frustum and checking if the leaf the portal leads to is in the pvs
+		else
 		{
-			c_leafs++;
-			leaf = leafstack[--leafstackpos];
-			r_worldleafvisible[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_worldsurfacevisible[*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
-			// and the leaf is visible in the pvs
-			// (the first two checks won't cause as many cache misses as the leaf checks)
-			for (p = leaf->portals;p;p = p->next)
-				if (DotProduct(r_vieworigin, p->plane.normal) < (p->plane.dist + 1) && !R_CullBox(p->mins, p->maxs) && !r_worldleafvisible[p->past - model->brush.data_leafs] && CHECKPVSBIT(r_pvsbits, p->past->clusterindex))
-					leafstack[leafstackpos++] = p->past;
+			int leafstackpos;
+			mportal_t *p;
+			mleaf_t *leafstack[8192];
+			// simple-frustum portal method:
+			// follows portals leading outward from viewleaf, does not venture
+			// offscreen or into leafs that are not visible, faster than
+			// Quake's RecursiveWorldNode and vastly better in unvised maps,
+			// often culls some surfaces that pvs alone would miss
+			// (such as a room in pvs that is hidden behind a wall, but the
+			//  passage leading to the room is off-screen)
+			leafstack[0] = viewleaf;
+			leafstackpos = 1;
+			while (leafstackpos)
+			{
+				r_refdef.stats.world_leafs++;
+				leaf = leafstack[--leafstackpos];
+				r_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;
+				// 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
+				// and the leaf is visible in the pvs
+				// (the first two checks won't cause as many cache misses as the leaf checks)
+				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;
+				}
+			}
 		}
 	}
-
-	if (r_drawportals.integer)
-		R_DrawPortals();
 }
 
 void R_Q1BSP_DrawSky(entity_render_t *ent)
 {
 	if (ent->model == NULL)
 		return;
-	if (r_drawcollisionbrushes.integer < 2)
-		R_DrawSurfaces(ent, true);
+	R_DrawSurfaces(ent, true);
 }
 
 void R_Q1BSP_Draw(entity_render_t *ent)
 {
-	if (ent->model == NULL)
+	model_t *model = ent->model;
+	if (model == NULL)
 		return;
-	c_bmodels++;
-	if (r_drawcollisionbrushes.integer < 2)
-		R_DrawSurfaces(ent, false);
-	if (r_drawcollisionbrushes.integer >= 1 && ent->model->brush.num_brushes)
-	{
-		int i;
-		model_t *model = ent->model;
-		msurface_t *surface;
-		q3mbrush_t *brush;
-		GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
-		GL_DepthMask(false);
-		GL_DepthTest(true);
-		qglPolygonOffset(r_drawcollisionbrushes_polygonfactor.value, r_drawcollisionbrushes_polygonoffset.value);
-		for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
-			if (brush->colbrushf && brush->colbrushf->numtriangles)
-				R_DrawCollisionBrush(brush->colbrushf);
-		for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
-			if (surface->num_collisiontriangles)
-				R_DrawCollisionSurface(ent, surface);
-		qglPolygonOffset(0, 0);
-	}
+	R_DrawSurfaces(ent, false);
 }
 
 typedef struct r_q1bsp_getlightinfo_s
@@ -509,16 +522,19 @@ typedef struct r_q1bsp_getlightinfo_s
 	vec3_t relativelightorigin;
 	float lightradius;
 	int *outleaflist;
-	qbyte *outleafpvs;
+	unsigned char *outleafpvs;
 	int outnumleafs;
 	int *outsurfacelist;
-	qbyte *outsurfacepvs;
+	unsigned char *outsurfacepvs;
+	unsigned char *tempsurfacepvs;
 	int outnumsurfaces;
 	vec3_t outmins;
 	vec3_t outmaxs;
 	vec3_t lightmins;
 	vec3_t lightmaxs;
-	const qbyte *pvs;
+	const unsigned char *pvs;
+	qboolean svbsp_active;
+	qboolean svbsp_insertoccluder;
 }
 r_q1bsp_getlightinfo_t;
 
@@ -528,21 +544,57 @@ void R_Q1BSP_RecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, mnode_t *node)
 	mleaf_t *leaf;
 	for (;;)
 	{
-		if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
-			return;
-		if (!node->plane)
+		mplane_t *plane = node->plane;
+		//if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
+		//	return;
+		if (!plane)
 			break;
-		sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, node->plane) - 1;
-		if (sides == 2)
+		if (plane->type < 3)
+			sides = ((info->lightmaxs[plane->type] >= plane->dist) | ((info->lightmins[plane->type] < plane->dist) << 1));
+		else
+			sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, plane);
+		if (sides == 3)
 		{
-			R_Q1BSP_RecursiveGetLightInfo(info, node->children[0]);
-			node = node->children[1];
+			// recurse front side first because the svbsp building prefers it
+			if (PlaneDist(info->relativelightorigin, plane) > 0)
+			{
+				R_Q1BSP_RecursiveGetLightInfo(info, node->children[0]);
+				node = node->children[1];
+			}
+			else
+			{
+				R_Q1BSP_RecursiveGetLightInfo(info, node->children[1]);
+				node = node->children[0];
+			}
 		}
+		else if (sides == 0)
+			return; // ERROR: NAN bounding box!
 		else
-			node = node->children[sides];
+			node = node->children[sides - 1];
 	}
 	leaf = (mleaf_t *)node;
-	if (info->pvs == NULL || CHECKPVSBIT(info->pvs, leaf->clusterindex))
+	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]);
@@ -559,32 +611,52 @@ void R_Q1BSP_RecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, mnode_t *node)
 				info->outleaflist[info->outnumleafs++] = leafindex;
 			}
 		}
-		if (info->outsurfacepvs)
+	}
+	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++)
 		{
-			int leafsurfaceindex;
-			for (leafsurfaceindex = 0;leafsurfaceindex < leaf->numleafsurfaces;leafsurfaceindex++)
+			surfaceindex = leaf->firstleafsurface[leafsurfaceindex];
+			if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
 			{
-				int surfaceindex = leaf->firstleafsurface[leafsurfaceindex];
-				if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
+				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)))
 				{
-					msurface_t *surface = info->model->data_surfaces + surfaceindex;
-					if (BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
-					if ((surface->texture->currentmaterialflags & (MATERIALFLAG_WALL | MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT)) == MATERIALFLAG_WALL)
+					for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
 					{
-						int triangleindex, t;
-						const int *e;
-						const vec_t *v[3];
-						for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->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 ((!r_shadow_frontsidecasting.integer || PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]))
+						 && info->lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0]))
+						 && info->lightmins[0] < max(v[0][0], max(v[1][0], v[2][0]))
+						 && info->lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1]))
+						 && info->lightmins[1] < max(v[0][1], max(v[1][1], v[2][1]))
+						 && info->lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2]))
+						 && info->lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
 						{
-							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 (PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]) && info->lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0])) && info->lightmins[0] < max(v[0][0], max(v[1][0], v[2][0])) && info->lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1])) && info->lightmins[1] < max(v[0][1], max(v[1][1], v[2][1])) && info->lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2])) && info->lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
+							if (info->svbsp_active)
 							{
-								SETPVSBIT(info->outsurfacepvs, surfaceindex);
-								info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
-								break;
+								VectorCopy(v[0], v2[0]);
+								VectorCopy(v[1], v2[1]);
+								VectorCopy(v[2], v2[2]);
+								if (!(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], info->svbsp_insertoccluder, NULL, NULL, 0) & 2))
+									continue;
 							}
+							SETPVSBIT(info->outsurfacepvs, surfaceindex);
+							info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
+							if (info->svbsp_insertoccluder)
+								continue;
+							else
+								break;
 						}
 					}
 				}
@@ -593,7 +665,80 @@ void R_Q1BSP_RecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, mnode_t *node)
 	}
 }
 
-void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, vec3_t outmins, vec3_t outmaxs, int *outleaflist, qbyte *outleafpvs, int *outnumleafspointer, int *outsurfacelist, qbyte *outsurfacepvs, int *outnumsurfacespointer)
+void R_Q1BSP_CallRecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, qboolean use_svbsp)
+{
+	if (use_svbsp)
+	{
+		double 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));
+		}
+		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);
+			// 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));
+			}
+			else
+				break;
+		}
+		// now clear the surfacepvs array because we need to redo it
+		memset(info->outsurfacepvs, 0, (info->model->nummodelsurfaces + 7) >> 3);
+		info->outnumsurfaces = 0;
+	}
+	else
+		info->svbsp_active = false;
+
+	// we HAVE to mark the leaf the light is in as lit, because portals are
+	// irrelevant to a leaf that the light source is inside of
+	// (and they are all facing away, too)
+	{
+		mnode_t *node = info->model->brush.data_nodes;
+		mleaf_t *leaf;
+		while (node->plane)
+			node = node->children[(node->plane->type < 3 ? info->relativelightorigin[node->plane->type] : DotProduct(info->relativelightorigin,node->plane->normal)) < node->plane->dist];
+		leaf = (mleaf_t *)node;
+		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))
+			{
+				SETPVSBIT(info->outleafpvs, leafindex);
+				info->outleaflist[info->outnumleafs++] = leafindex;
+			}
+		}
+	}
+
+	info->svbsp_insertoccluder = false;
+	R_Q1BSP_RecursiveGetLightInfo(info, info->model->brush.data_nodes);
+	if (developer.integer >= 100 && 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);
+	}
+}
+
+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)
 {
 	r_q1bsp_getlightinfo_t info;
 	VectorCopy(relativelightorigin, info.relativelightorigin);
@@ -623,26 +768,17 @@ void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, floa
 	VectorCopy(info.relativelightorigin, info.outmaxs);
 	memset(outleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
 	memset(outsurfacepvs, 0, (info.model->nummodelsurfaces + 7) >> 3);
-	if (info.model->brush.GetPVS)
+	if (info.model->brush.GetPVS && r_shadow_frontsidecasting.integer)
 		info.pvs = info.model->brush.GetPVS(info.model, info.relativelightorigin);
 	else
 		info.pvs = NULL;
 	R_UpdateAllTextureInfo(ent);
-	if (r_shadow_compilingrtlight)
-	{
-		// 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);
-	}
-	else if (r_shadow_realtime_dlight_portalculling.integer)
-	{
-		// 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);
-	}
-	else
-	{
-		// use BSP recursion as lights are often small
-		R_Q1BSP_RecursiveGetLightInfo(&info, info.model->brush.data_nodes);
-	}
+
+	// recurse the bsp tree, checking leafs and surfaces for visibility
+	// 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);
 
 	// limit combined leaf box to light boundaries
 	outmins[0] = max(info.outmins[0] - 1, info.lightmins[0]);
@@ -656,89 +792,263 @@ void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, floa
 	*outnumsurfacespointer = info.outnumsurfaces;
 }
 
-void R_Q1BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist, const vec3_t lightmins, const vec3_t lightmaxs)
+void R_Q1BSP_CompileShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativelightdirection, float lightradius, int numsurfaces, const int *surfacelist)
 {
 	model_t *model = ent->model;
 	msurface_t *surface;
 	int surfacelistindex;
-	if (r_drawcollisionbrushes.integer < 2)
+	float projectdistance = relativelightdirection ? lightradius : lightradius + model->radius*2 + r_shadow_projectdistance.value;
+	texture_t *texture;
+	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);
+	for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
+	{
+		surface = model->data_surfaces + surfacelist[surfacelistindex];
+		texture = surface->texture;
+		if (texture->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);
+	}
+	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);
+}
+
+void R_Q1BSP_DrawShadowVolume_Batch(const vec3_t relativelightorigin, const vec3_t relativelightdirection, const vec3_t lightmins, const vec3_t lightmaxs, int texturenumsurfaces, msurface_t **texturesurfacelist)
+{
+	int texturesurfaceindex;
+	RSurf_PrepareVerticesForBatch(false, false, texturenumsurfaces, texturesurfacelist);
+	for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
+	{
+		msurface_t *surface = texturesurfacelist[texturesurfaceindex];
+		R_Shadow_MarkVolumeFromBox(surface->num_firsttriangle, surface->num_triangles, rsurface_vertex3f, rsurface_model->surfmesh.data_element3i, relativelightorigin, relativelightdirection, lightmins, lightmaxs, surface->mins, surface->maxs);
+	}
+}
+
+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)
+{
+	model_t *model = ent->model;
+	msurface_t *surface;
+	int modelsurfacelistindex;
+	int f = 0;
+	float projectdistance = relativelightdirection ? lightradius : lightradius + model->radius*2 + r_shadow_projectdistance.value;
+	texture_t *t = NULL;
+	const int maxsurfacelist = 1024;
+	int numsurfacelist = 0;
+	msurface_t *surfacelist[1024];
+	// 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_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
-		if (!r_shadow_compilingrtlight)
-			R_UpdateAllTextureInfo(ent);
-		for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
+		for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
 		{
-			surface = model->data_surfaces + surfacelist[surfacelistindex];
-			if ((surface->texture->currentmaterialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) != MATERIALFLAG_WALL)
+			surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
+			if (surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW)
 				continue;
-			if (surface->texture->textureflags & Q3TEXTUREFLAG_TWOSIDED)
-				continue;
-			R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
+			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, lightradius + model->radius + r_shadow_projectdistance.value, numshadowmark, shadowmarklist);
+		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;
+		RSurf_ActiveEntity(ent, false, false);
+		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];
+			if (t != surface->texture || numsurfacelist >= maxsurfacelist)
+			{
+				if (numsurfacelist)
+				{
+					R_Q1BSP_DrawShadowVolume_Batch(relativelightorigin, relativelightdirection, lightmins, lightmaxs, numsurfacelist, surfacelist);
+					numsurfacelist = 0;
+				}
+				t = surface->texture;
+				rsurface_texture = t->currentframe;
+				f = (rsurface_texture->currentmaterialflags & MATERIALFLAG_NOSHADOW) == 0;
+			}
+			if (f && surface->num_triangles)
+				surfacelist[numsurfacelist++] = surface;
+		}
+		if (numsurfacelist)
+			R_Q1BSP_DrawShadowVolume_Batch(relativelightorigin, relativelightdirection, lightmins, lightmaxs, numsurfacelist, surfacelist);
+		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);
 	}
 }
 
-void R_Q1BSP_DrawLight(entity_render_t *ent, float *lightcolor, int numsurfaces, const int *surfacelist)
+#define BATCHSIZE 256
+
+static void R_Q1BSP_DrawLight_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
+{
+	int surfacelistindex, batchcount;
+	texture_t *t;
+	msurface_t *batchsurfaces[BATCHSIZE];
+	// note: in practice this never actually batches, oh well
+	R_Shadow_RenderMode_Begin();
+	R_Shadow_RenderMode_ActiveLight((rtlight_t *)rtlight);
+	R_Shadow_RenderMode_Lighting(false, true);
+	R_Shadow_SetupEntityLight(ent);
+	t = NULL;
+	batchcount = 0;
+	for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
+	{
+		msurface_t *surface = ent->model->data_surfaces + surfacelist[surfacelistindex];
+		if (t != surface->texture)
+		{
+			if (batchcount > 0)
+				R_Shadow_RenderSurfacesLighting(batchcount, batchsurfaces);
+			batchcount = 0;
+			t = surface->texture;
+			R_UpdateTextureInfo(ent, t);
+			rsurface_texture = t->currentframe;
+		}
+		batchsurfaces[batchcount++] = surface;
+	}
+	if (batchcount > 0)
+		R_Shadow_RenderSurfacesLighting(batchcount, batchsurfaces);
+	R_Shadow_RenderMode_End();
+}
+
+static void R_Q1BSP_DrawLight_TransparentBatch(int batchnumsurfaces, msurface_t **batchsurfacelist)
+{
+	int batchsurfaceindex;
+	msurface_t *batchsurface;
+	vec3_t tempcenter, center;
+	for (batchsurfaceindex = 0;batchsurfaceindex < batchnumsurfaces;batchsurfaceindex++)
+	{
+		batchsurface = batchsurfacelist[batchsurfaceindex];
+		tempcenter[0] = (batchsurface->mins[0] + batchsurface->maxs[0]) * 0.5f;
+		tempcenter[1] = (batchsurface->mins[1] + batchsurface->maxs[1]) * 0.5f;
+		tempcenter[2] = (batchsurface->mins[2] + batchsurface->maxs[2]) * 0.5f;
+		Matrix4x4_Transform(&rsurface_entity->matrix, tempcenter, center);
+		R_MeshQueue_AddTransparent(rsurface_texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST ? r_view.origin : center, R_Q1BSP_DrawLight_TransparentCallback, rsurface_entity, batchsurface - rsurface_model->data_surfaces, r_shadow_rtlight);
+	}
+}
+
+#define RSURF_MAX_BATCHSURFACES 1024
+
+void R_Q1BSP_DrawLight(entity_render_t *ent, int numsurfaces, const int *surfacelist)
 {
 	model_t *model = ent->model;
 	msurface_t *surface;
-	texture_t *t;
-	int surfacelistindex;
-	if (r_drawcollisionbrushes.integer < 2)
+	int surfacelistindex, batchnumsurfaces;
+	msurface_t *batchsurfacelist[RSURF_MAX_BATCHSURFACES];
+	texture_t *tex;
+	qboolean skip;
+	CHECKGLERROR
+	RSurf_ActiveEntity(ent, true, true);
+	R_UpdateAllTextureInfo(ent);
+	tex = NULL;
+	rsurface_texture = NULL;
+	skip = false;
+	batchnumsurfaces = 0;
+	CHECKGLERROR
+	for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 	{
-		R_Mesh_Matrix(&ent->matrix);
-		if (!r_shadow_compilingrtlight)
-			R_UpdateAllTextureInfo(ent);
-		for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
+		if ((ent == r_refdef.worldentity && !r_viewcache.world_surfacevisible[surfacelist[surfacelistindex]]))
+			continue;
+		surface = model->data_surfaces + surfacelist[surfacelistindex];
+		r_refdef.stats.lights_lighttriangles += surface->num_triangles;
+		if (tex != surface->texture)
 		{
-			surface = model->data_surfaces + surfacelist[surfacelistindex];
-			if (surface->texture->basematerialflags & MATERIALFLAG_NODRAW || !surface->num_triangles)
+			if (batchnumsurfaces > 0)
+			{
+				if (rsurface_texture->currentmaterialflags & MATERIALFLAG_BLENDED)
+					R_Q1BSP_DrawLight_TransparentBatch(batchnumsurfaces, batchsurfacelist);
+				else
+					R_Shadow_RenderSurfacesLighting(batchnumsurfaces, batchsurfacelist);
+				batchnumsurfaces = 0;
+			}
+			tex = surface->texture;
+			rsurface_texture = surface->texture->currentframe;
+			skip = (rsurface_texture->currentmaterialflags & MATERIALFLAG_SKY) != 0;
+			if (skip)
 				continue;
-			if (r_shadow_compilingrtlight)
+		}
+		if (!skip && surface->num_triangles)
+		{
+			if (batchnumsurfaces == RSURF_MAX_BATCHSURFACES)
 			{
-				// if compiling an rtlight, capture the mesh
-				t = surface->texture;
-				if ((t->basematerialflags & (MATERIALFLAG_WALL | MATERIALFLAG_TRANSPARENT)) == MATERIALFLAG_WALL)
-				{
-#if 1
-					int tri;
-					int *e;
-					float *lightmins, *lightmaxs, *v[3], *vertex3f;
-					e = surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle;
-					vertex3f = surface->groupmesh->data_vertex3f;
-					lightmins = r_shadow_compilingrtlight->cullmins;
-					lightmaxs = r_shadow_compilingrtlight->cullmaxs;
-					for (tri = 0;tri < surface->num_triangles;tri++, e += 3)
-					{
-						v[0] = vertex3f + e[0] * 3;
-						v[1] = vertex3f + e[1] * 3;
-						v[2] = vertex3f + e[2] * 3;
-						if (PointInfrontOfTriangle(r_shadow_compilingrtlight->shadoworigin, v[0], v[1], v[2]) && lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0])) && lightmins[0] < max(v[0][0], max(v[1][0], v[2][0])) && lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1])) && lightmins[1] < max(v[0][1], max(v[1][1], v[2][1])) && lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2])) && lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
-							Mod_ShadowMesh_AddMesh(r_shadow_mempool, r_shadow_compilingrtlight->static_meshchain_light, surface->texture->skin.base, surface->texture->skin.gloss, surface->texture->skin.nmap, surface->groupmesh->data_vertex3f, surface->groupmesh->data_svector3f, surface->groupmesh->data_tvector3f, surface->groupmesh->data_normal3f, surface->groupmesh->data_texcoordtexture2f, 1, e);
-					}
-#else
-					Mod_ShadowMesh_AddMesh(r_shadow_mempool, r_shadow_compilingrtlight->static_meshchain_light, surface->texture->skin.base, surface->texture->skin.gloss, surface->texture->skin.nmap, surface->groupmesh->data_vertex3f, surface->groupmesh->data_svector3f, surface->groupmesh->data_tvector3f, surface->groupmesh->data_normal3f, surface->groupmesh->data_texcoordtexture2f, surface->num_triangles, (surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle));
-#endif
-				}
+				if (rsurface_texture->currentmaterialflags & MATERIALFLAG_BLENDED)
+					R_Q1BSP_DrawLight_TransparentBatch(batchnumsurfaces, batchsurfacelist);
+				else
+					R_Shadow_RenderSurfacesLighting(batchnumsurfaces, batchsurfacelist);
+				batchnumsurfaces = 0;
 			}
-			else if (ent != r_refdef.worldentity || r_worldsurfacevisible[surfacelist[surfacelistindex]])
+			batchsurfacelist[batchnumsurfaces++] = surface;
+		}
+	}
+	if (batchnumsurfaces > 0)
+	{
+		if (rsurface_texture->currentmaterialflags & MATERIALFLAG_BLENDED)
+			R_Q1BSP_DrawLight_TransparentBatch(batchnumsurfaces, batchsurfacelist);
+		else
+			R_Shadow_RenderSurfacesLighting(batchnumsurfaces, batchsurfacelist);
+		batchnumsurfaces = 0;
+	}
+}
+
+//Made by [515]
+void R_ReplaceWorldTexture (void)
+{
+	model_t		*m;
+	texture_t	*t;
+	int			i;
+	const char	*r, *newt;
+	m = r_refdef.worldmodel;
+
+	if(Cmd_Argc() < 2)
+	{
+		Con_Print("r_replacemaptexture <texname> <newtexname> - replaces texture\n");
+		Con_Print("r_replacemaptexture <texname> - switch back to default texture\n");
+		return;
+	}
+	if(!cl.islocalgame || !cl.worldmodel)
+	{
+		Con_Print("This command works only in singleplayer\n");
+		return;
+	}
+	r = Cmd_Argv(1);
+	newt = Cmd_Argv(2);
+	if(!newt[0])
+		newt = r;
+	for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
+	{
+		if(t->width && !strcasecmp(t->name, r))
+		{
+			if(Mod_LoadSkinFrame(&t->skinframes[0], (char*)newt, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer))
 			{
-				t = surface->texture->currentframe;
-				// FIXME: transparent surfaces need to be lit later
-				if ((t->currentmaterialflags & (MATERIALFLAG_WALL | MATERIALFLAG_TRANSPARENT)) == MATERIALFLAG_WALL)
-				{
-					if (surface->texture->textureflags & Q3TEXTUREFLAG_TWOSIDED)
-						qglDisable(GL_CULL_FACE);
-					R_Shadow_RenderLighting(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, (surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle), surface->groupmesh->data_vertex3f, surface->groupmesh->data_svector3f, surface->groupmesh->data_tvector3f, surface->groupmesh->data_normal3f, surface->groupmesh->data_texcoordtexture2f, lightcolor, vec3_origin, vec3_origin, t->skin.base, NULL, NULL, t->skin.nmap, t->skin.gloss);
-					if (surface->texture->textureflags & Q3TEXTUREFLAG_TWOSIDED)
-						qglEnable(GL_CULL_FACE);
-				}
+				Con_Printf("%s replaced with %s\n", r, newt);
+				return;
+			}
+			else
+			{
+				Con_Printf("%s was not found\n", newt);
+				Mod_LoadSkinFrame(&t->skinframes[0], (char*)r, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer);//back to default
+				return;
 			}
 		}
 	}
 }
 
+//Made by [515]
+void R_ListWorldTextures (void)
+{
+	model_t		*m;
+	texture_t	*t;
+	int			i;
+	m = r_refdef.worldmodel;
+
+	Con_Print("Worldmodel textures :\n");
+	for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
+		if (t->numskinframes)
+			Con_Printf("%s\n", t->name);
+}
+
 #if 0
 static void gl_surf_start(void)
 {
@@ -757,14 +1067,14 @@ void GL_Surf_Init(void)
 {
 
 	Cvar_RegisterVariable(&r_ambient);
-	Cvar_RegisterVariable(&r_drawportals);
-	Cvar_RegisterVariable(&r_testvis);
-	Cvar_RegisterVariable(&r_detailtextures);
-	Cvar_RegisterVariable(&r_surfaceworldnode);
-	Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonfactor);
-	Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonoffset);
+	Cvar_RegisterVariable(&r_lockpvs);
+	Cvar_RegisterVariable(&r_lockvisibility);
+	Cvar_RegisterVariable(&r_useportalculling);
 	Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
 
+	Cmd_AddCommand ("r_replacemaptexture", R_ReplaceWorldTexture, "override a map texture for testing purposes");	// By [515]
+	Cmd_AddCommand ("r_listmaptextures", R_ListWorldTextures, "list all textures used by the current map");	// By [515]
+
 	//R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
 }