X-Git-Url: http://de.git.xonotic.org/?p=xonotic%2Fdarkplaces.git;a=blobdiff_plain;f=model_shared.c;h=9c63e458bea43b4251615a07248c3faef00edf61;hp=ab7de28c4d95f1a99042852480711dfc723ce30f;hb=76ed5d5ee3a2517bfae3df09fb0b8d912f7286bc;hpb=603987edca0ef1132be0d2e1698c9e850cf3b08f

diff --git a/model_shared.c b/model_shared.c
index ab7de28c..9c63e458 100644
--- a/model_shared.c
+++ b/model_shared.c
@@ -26,42 +26,71 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include "image.h"
 #include "r_shadow.h"
 
-cvar_t r_mipskins = {CVAR_SAVE, "r_mipskins", "0"};
+cvar_t r_mipskins = {CVAR_SAVE, "r_mipskins", "0", "mipmaps skins (so they become blurrier in the distance), disabled by default because it tends to blur with strange border colors from the skin"};
 
 model_t *loadmodel;
 
+#if 0
+// LordHavoc: was 512
+static int mod_numknown = 0;
+static int mod_maxknown = 0;
+static model_t *mod_known = NULL;
+#else
 // LordHavoc: was 512
 #define MAX_MOD_KNOWN (MAX_MODELS + 256)
+static int mod_numknown = 0;
+static int mod_maxknown = MAX_MOD_KNOWN;
 static model_t mod_known[MAX_MOD_KNOWN];
+#endif
 
 static void mod_start(void)
 {
 	int i;
-	for (i = 0;i < MAX_MOD_KNOWN;i++)
-		if (mod_known[i].name[0])
-			Mod_UnloadModel(&mod_known[i]);
-	Mod_LoadModels();
+	model_t *mod;
+
+	for (i = 0, mod = mod_known;i < mod_numknown;i++, mod++)
+		if (mod->name[0] && mod->name[0] != '*')
+			if (mod->used)
+				Mod_LoadModel(mod, true, false, mod->isworldmodel);
 }
 
 static void mod_shutdown(void)
 {
 	int i;
-	for (i = 0;i < MAX_MOD_KNOWN;i++)
-		if (mod_known[i].name[0])
-			Mod_UnloadModel(&mod_known[i]);
+	model_t *mod;
+
+	for (i = 0, mod = mod_known;i < mod_numknown;i++, mod++)
+		if (mod->loaded || mod->mempool)
+			Mod_UnloadModel(mod);
 }
 
 static void mod_newmap(void)
 {
 	msurface_t *surface;
-	int i, surfacenum, ssize, tsize;
+	int i, j, k, surfacenum, ssize, tsize;
+
+	R_SkinFrame_PrepareForPurge();
+	for (i = 0;i < mod_numknown;i++)
+	{
+		if (mod_known[i].mempool && mod_known[i].data_textures)
+		{
+			for (j = 0;j < mod_known[i].num_textures;j++)
+			{
+				for (k = 0;k < mod_known[i].data_textures[j].numskinframes;k++)
+					R_SkinFrame_MarkUsed(mod_known[i].data_textures[j].skinframes[k]);
+				for (k = 0;k < mod_known[i].data_textures[j].backgroundnumskinframes;k++)
+					R_SkinFrame_MarkUsed(mod_known[i].data_textures[j].backgroundskinframes[k]);
+			}
+		}
+	}
+	R_SkinFrame_Purge();
 
 	if (!cl_stainmaps_clearonload.integer)
 		return;
 
-	for (i = 0;i < MAX_MOD_KNOWN;i++)
+	for (i = 0;i < mod_numknown;i++)
 	{
-		if (mod_known[i].name[0])
+		if (mod_known[i].mempool && mod_known[i].data_surfaces)
 		{
 			for (surfacenum = 0, surface = mod_known[i].data_surfaces;surfacenum < mod_known[i].num_surfaces;surfacenum++, surface++)
 			{
@@ -84,6 +113,7 @@ Mod_Init
 */
 static void Mod_Print(void);
 static void Mod_Precache (void);
+static void Mod_BuildVBOs(void);
 void Mod_Init (void)
 {
 	Mod_BrushInit();
@@ -91,8 +121,8 @@ void Mod_Init (void)
 	Mod_SpriteInit();
 
 	Cvar_RegisterVariable(&r_mipskins);
-	Cmd_AddCommand ("modellist", Mod_Print);
-	Cmd_AddCommand ("modelprecache", Mod_Precache);
+	Cmd_AddCommand ("modellist", Mod_Print, "prints a list of loaded models");
+	Cmd_AddCommand ("modelprecache", Mod_Precache, "load a model");
 }
 
 void Mod_RenderInit(void)
@@ -100,25 +130,25 @@ void Mod_RenderInit(void)
 	R_RegisterModule("Models", mod_start, mod_shutdown, mod_newmap);
 }
 
-void Mod_FreeModel (model_t *mod)
-{
-	R_FreeTexturePool(&mod->texturepool);
-	Mem_FreePool(&mod->mempool);
-
-	// clear the struct to make it available
-	memset(mod, 0, sizeof(model_t));
-}
-
 void Mod_UnloadModel (model_t *mod)
 {
 	char name[MAX_QPATH];
 	qboolean isworldmodel;
 	qboolean used;
-	strcpy(name, mod->name);
+	strlcpy(name, mod->name, sizeof(name));
 	isworldmodel = mod->isworldmodel;
 	used = mod->used;
-	Mod_FreeModel(mod);
-	strcpy(mod->name, name);
+	if (mod->surfmesh.ebo)
+		R_Mesh_DestroyBufferObject(mod->surfmesh.ebo);
+	if (mod->surfmesh.vbo)
+		R_Mesh_DestroyBufferObject(mod->surfmesh.vbo);
+	// free textures/memory attached to the model
+	R_FreeTexturePool(&mod->texturepool);
+	Mem_FreePool(&mod->mempool);
+	// clear the struct to make it available
+	memset(mod, 0, sizeof(model_t));
+	// restore the fields we want to preserve
+	strlcpy(mod->name, name, sizeof(mod->name));
 	mod->isworldmodel = isworldmodel;
 	mod->used = used;
 	mod->loaded = false;
@@ -136,6 +166,7 @@ model_t *Mod_LoadModel(model_t *mod, qboolean crash, qboolean checkdisk, qboolea
 	int num;
 	unsigned int crc;
 	void *buf;
+	fs_offset_t filesize;
 
 	mod->used = true;
 
@@ -144,26 +175,42 @@ model_t *Mod_LoadModel(model_t *mod, qboolean crash, qboolean checkdisk, qboolea
 
 	crc = 0;
 	buf = NULL;
+
+	// even if the model is loaded it still may need reloading...
+
+	// if the model is a worldmodel and is being referred to as a
+	// non-worldmodel here, then it needs reloading to get rid of the
+	// submodels
 	if (mod->isworldmodel != isworldmodel)
 		mod->loaded = false;
+
+	// if it is not loaded or checkdisk is true we need to calculate the crc
 	if (!mod->loaded || checkdisk)
 	{
 		if (checkdisk && mod->loaded)
 			Con_DPrintf("checking model %s\n", mod->name);
-		buf = FS_LoadFile (mod->name, tempmempool, false);
+		buf = FS_LoadFile (mod->name, tempmempool, false, &filesize);
 		if (buf)
 		{
-			crc = CRC_Block(buf, fs_filesize);
+			crc = CRC_Block((unsigned char *)buf, filesize);
+			// we need to reload the model if the crc does not match
 			if (mod->crc != crc)
 				mod->loaded = false;
 		}
 	}
+
+	// if the model is already loaded and checks passed, just return
 	if (mod->loaded)
-		return mod; // already loaded
+	{
+		if (buf)
+			Mem_Free(buf);
+		return mod;
+	}
 
 	Con_DPrintf("loading model %s\n", mod->name);
 	// LordHavoc: unload the existing model in this slot (if there is one)
-	Mod_UnloadModel(mod);
+	if (mod->loaded || mod->mempool)
+		Mod_UnloadModel(mod);
 
 	// load the model
 	mod->isworldmodel = isworldmodel;
@@ -181,15 +228,13 @@ model_t *Mod_LoadModel(model_t *mod, qboolean crash, qboolean checkdisk, qboolea
 	VectorSet(mod->rotatedmins, -mod->radius, -mod->radius, -mod->radius);
 	VectorSet(mod->rotatedmaxs, mod->radius, mod->radius, mod->radius);
 
-	// all models use memory, so allocate a memory pool
-	mod->mempool = Mem_AllocPool(mod->name, 0, NULL);
-	// all models load textures, so allocate a texture pool
-	if (cls.state != ca_dedicated)
-		mod->texturepool = R_AllocTexturePool();
-
 	if (buf)
 	{
-		char *bufend = (char *)buf + fs_filesize;
+		char *bufend = (char *)buf + filesize;
+
+		// all models use memory, so allocate a memory pool
+		mod->mempool = Mem_AllocPool(mod->name, 0, NULL);
+
 		num = LittleLong(*((int *)buf));
 		// call the apropriate loader
 		loadmodel = mod;
@@ -201,40 +246,36 @@ model_t *Mod_LoadModel(model_t *mod, qboolean crash, qboolean checkdisk, qboolea
 		else if (!memcmp(buf, "IBSP", 4)) Mod_IBSP_Load(mod, buf, bufend);
 		else if (!memcmp(buf, "ZYMOTICMODEL", 12)) Mod_ZYMOTICMODEL_Load(mod, buf, bufend);
 		else if (!memcmp(buf, "DARKPLACESMODEL", 16)) Mod_DARKPLACESMODEL_Load(mod, buf, bufend);
-		else if (!strcmp(buf, "ACTRHEAD")) Mod_PSKMODEL_Load(mod, buf, bufend);
+		else if (!memcmp(buf, "ACTRHEAD", 8)) Mod_PSKMODEL_Load(mod, buf, bufend);
 		else if (strlen(mod->name) >= 4 && !strcmp(mod->name - 4, ".map")) Mod_MAP_Load(mod, buf, bufend);
+		else if (!memcmp(buf, "MCBSPpad", 8)) Mod_Q1BSP_Load(mod, buf, bufend);
 		else if (num == BSPVERSION || num == 30) Mod_Q1BSP_Load(mod, buf, bufend);
 		else Con_Printf("Mod_LoadModel: model \"%s\" is of unknown/unsupported type\n", mod->name);
 		Mem_Free(buf);
+
+		Mod_BuildVBOs();
+
+		// no fatal errors occurred, so this model is ready to use.
+		mod->loaded = true;
 	}
 	else if (crash)
 	{
 		// LordHavoc: Sys_Error was *ANNOYING*
 		Con_Printf ("Mod_LoadModel: %s not found\n", mod->name);
 	}
-
-	// no errors occurred
-	mod->loaded = true;
 	return mod;
 }
 
-/*
-===================
-Mod_ClearAll
-===================
-*/
-void Mod_ClearAll(void)
-{
-}
-
 void Mod_ClearUsed(void)
 {
+#if 0
 	int i;
 	model_t *mod;
 
-	for (i = 0, mod = mod_known;i < MAX_MOD_KNOWN;i++, mod++)
+	for (i = 0, mod = mod_known;i < mod_numknown;i++, mod++)
 		if (mod->name[0])
 			mod->used = false;
+#endif
 }
 
 void Mod_PurgeUnused(void)
@@ -242,30 +283,27 @@ void Mod_PurgeUnused(void)
 	int i;
 	model_t *mod;
 
-	for (i = 0, mod = mod_known;i < MAX_MOD_KNOWN;i++, mod++)
+	for (i = 0, mod = mod_known;i < mod_numknown;i++, mod++)
 		if (mod->name[0])
 			if (!mod->used)
-				Mod_FreeModel(mod);
+				Mod_UnloadModel(mod);
 }
 
 // only used during loading!
 void Mod_RemoveStaleWorldModels(model_t *skip)
-{
-	int i;
-	for (i = 0;i < MAX_MOD_KNOWN;i++)
-		if (mod_known[i].isworldmodel && skip != &mod_known[i])
-			Mod_UnloadModel(mod_known + i);
-}
-
-void Mod_LoadModels(void)
 {
 	int i;
 	model_t *mod;
 
-	for (i = 0, mod = mod_known;i < MAX_MOD_KNOWN;i++, mod++)
-		if (mod->name[0])
-			if (mod->used)
-				Mod_CheckLoaded(mod);
+	for (i = 0, mod = mod_known;i < mod_numknown;i++, mod++)
+	{
+		if (mod->isworldmodel && mod->loaded && skip != mod)
+		{
+			Mod_UnloadModel(mod);
+			mod->isworldmodel = false;
+			mod->used = false;
+		}
+	}
 }
 
 /*
@@ -277,38 +315,49 @@ Mod_FindName
 model_t *Mod_FindName(const char *name)
 {
 	int i;
-	model_t *mod, *freemod;
+	model_t *mod;
 
 	if (!name[0])
 		Host_Error ("Mod_ForName: NULL name");
 
 // search the currently loaded models
-	freemod = NULL;
-	for (i = 0, mod = mod_known;i < MAX_MOD_KNOWN;i++, mod++)
+	for (i = 0, mod = mod_known;i < mod_numknown;i++, mod++)
 	{
-		if (mod->name[0])
+		if (mod->name[0] && !strcmp(mod->name, name))
 		{
-			if (!strcmp (mod->name, name))
-			{
-				mod->used = true;
-				return mod;
-			}
+			mod->used = true;
+			return mod;
 		}
-		else if (freemod == NULL)
-			freemod = mod;
 	}
 
-	if (freemod)
+	// no match found, find room for a new one
+	for (i = 0;i < mod_numknown;i++)
+		if (!mod_known[i].name[0])
+			break;
+
+	if (mod_maxknown == i)
 	{
-		mod = freemod;
-		strcpy (mod->name, name);
-		mod->loaded = false;
-		mod->used = true;
-		return mod;
+#if 0
+		model_t *old;
+		mod_maxknown += 256;
+		old = mod_known;
+		mod_known = Mem_Alloc(mod_mempool, mod_maxknown * sizeof(model_t));
+		if (old)
+		{
+			memcpy(mod_known, old, mod_numknown * sizeof(model_t));
+			Mem_Free(old);
+		}
+#else
+		Host_Error ("Mod_FindName: ran out of models");
+#endif
 	}
-
-	Host_Error ("Mod_FindName: ran out of models\n");
-	return NULL;
+	if (mod_numknown == i)
+		mod_numknown++;
+	mod = mod_known + i;
+	strlcpy (mod->name, name, sizeof(mod->name));
+	mod->loaded = false;
+	mod->used = true;
+	return mod;
 }
 
 /*
@@ -320,10 +369,32 @@ Loads in a model for the given name
 */
 model_t *Mod_ForName(const char *name, qboolean crash, qboolean checkdisk, qboolean isworldmodel)
 {
-	return Mod_LoadModel(Mod_FindName(name), crash, checkdisk, isworldmodel);
+	model_t *model;
+	model = Mod_FindName(name);
+	if (model->name[0] != '*' && (!model->loaded || checkdisk))
+		Mod_LoadModel(model, crash, checkdisk, isworldmodel);
+	return model;
 }
 
-qbyte *mod_base;
+/*
+==================
+Mod_Reload
+
+Reloads all models if they have changed
+==================
+*/
+void Mod_Reload()
+{
+	int i;
+	model_t *mod;
+
+	for (i = 0, mod = mod_known;i < mod_numknown;i++, mod++)
+		if (mod->name[0] && mod->name[0] != '*')
+			if (mod->used)
+				Mod_LoadModel(mod, true, true, mod->isworldmodel);
+}
+
+unsigned char *mod_base;
 
 
 //=============================================================================
@@ -339,9 +410,9 @@ static void Mod_Print(void)
 	model_t	*mod;
 
 	Con_Print("Loaded models:\n");
-	for (i = 0, mod = mod_known;i < MAX_MOD_KNOWN;i++, mod++)
+	for (i = 0, mod = mod_known;i < mod_numknown;i++, mod++)
 		if (mod->name[0])
-			Con_Printf("%4iK %s\n", mod->mempool ? (mod->mempool->totalsize + 1023) / 1024 : 0, mod->name);
+			Con_Printf("%4iK %s\n", mod->mempool ? (int)((mod->mempool->totalsize + 1023) / 1024) : 0, mod->name);
 }
 
 /*
@@ -360,8 +431,8 @@ static void Mod_Precache(void)
 int Mod_BuildVertexRemapTableFromElements(int numelements, const int *elements, int numvertices, int *remapvertices)
 {
 	int i, count;
-	qbyte *used;
-	used = Mem_Alloc(tempmempool, numvertices);
+	unsigned char *used;
+	used = (unsigned char *)Mem_Alloc(tempmempool, numvertices);
 	memset(used, 0, numvertices);
 	for (i = 0;i < numelements;i++)
 		used[elements[i]] = 1;
@@ -390,7 +461,7 @@ void Mod_BuildTriangleNeighbors(int *neighbors, const int *elements, int numtria
 	edgehashentries = edgehashentriesbuffer;
 	// if there are too many triangles for the stack array, allocate larger buffer
 	if (numtriangles > TRIANGLEEDGEHASH)
-		edgehashentries = Mem_Alloc(tempmempool, numtriangles * 3 * sizeof(edgehashentry_t));
+		edgehashentries = (edgehashentry_t *)Mem_Alloc(tempmempool, numtriangles * 3 * sizeof(edgehashentry_t));
 	// find neighboring triangles
 	for (i = 0, e = elements, n = neighbors;i < numtriangles;i++, e += 3, n += 3)
 	{
@@ -480,12 +551,21 @@ void Mod_BuildTriangleNeighbors(int *neighbors, const int *elements, int numtria
 }
 #endif
 
-void Mod_ValidateElements(const int *elements, int numtriangles, int numverts, const char *filename, int fileline)
+void Mod_ValidateElements(int *elements, int numtriangles, int firstvertex, int numverts, const char *filename, int fileline)
 {
-	int i;
+	int i, warned = false, endvertex = firstvertex + numverts;
 	for (i = 0;i < numtriangles * 3;i++)
-		if ((unsigned int)elements[i] >= (unsigned int)numverts)
-			Con_Printf("Mod_ValidateElements: out of bounds element detected at %s:%d\n", filename, fileline);
+	{
+		if (elements[i] < firstvertex || elements[i] >= endvertex)
+		{
+			if (!warned)
+			{
+				warned = true;
+				Con_Printf("Mod_ValidateElements: out of bounds elements detected at %s:%d\n", filename, fileline);
+			}
+			elements[i] = firstvertex;
+		}
+	}
 }
 
 // warning: this is an expensive function!
@@ -538,9 +618,9 @@ void Mod_BuildBumpVectors(const float *v0, const float *v1, const float *v2, con
 	// 6 multiply, 9 subtract
 	VectorSubtract(v1, v0, v10);
 	VectorSubtract(v2, v0, v20);
-	normal3f[0] = v10[1] * v20[2] - v10[2] * v20[1];
-	normal3f[1] = v10[2] * v20[0] - v10[0] * v20[2];
-	normal3f[2] = v10[0] * v20[1] - v10[1] * v20[0];
+	normal3f[0] = v20[1] * v10[2] - v20[2] * v10[1];
+	normal3f[1] = v20[2] * v10[0] - v20[0] * v10[2];
+	normal3f[2] = v20[0] * v10[1] - v20[1] * v10[0];
 	// 12 multiply, 10 subtract
 	tc10[1] = tc1[1] - tc0[1];
 	tc20[1] = tc2[1] - tc0[1];
@@ -574,91 +654,117 @@ void Mod_BuildBumpVectors(const float *v0, const float *v1, const float *v2, con
 }
 
 // warning: this is a very expensive function!
-void Mod_BuildTextureVectorsAndNormals(int firstvertex, int numvertices, int numtriangles, const float *vertex3f, const float *texcoord2f, const int *elements, float *svector3f, float *tvector3f, float *normal3f, qboolean areaweighting)
+void Mod_BuildTextureVectorsFromNormals(int firstvertex, int numvertices, int numtriangles, const float *vertex3f, const float *texcoord2f, const float *normal3f, const int *elements, float *svector3f, float *tvector3f, qboolean areaweighting)
 {
 	int i, tnum;
-	float sdir[3], tdir[3], normal[3], *v;
+	float sdir[3], tdir[3], normal[3], *sv, *tv;
+	const float *v0, *v1, *v2, *tc0, *tc1, *tc2, *n;
+	float f, tangentcross[3], v10[3], v20[3], tc10[2], tc20[2];
 	const int *e;
 	// clear the vectors
-	if (svector3f)
-		memset(svector3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
-	if (tvector3f)
-		memset(tvector3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
-	if (normal3f)
-		memset(normal3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
+	memset(svector3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
+	memset(tvector3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
 	// process each vertex of each triangle and accumulate the results
 	for (tnum = 0, e = elements;tnum < numtriangles;tnum++, e += 3)
 	{
-		Mod_BuildBumpVectors(vertex3f + e[0] * 3, vertex3f + e[1] * 3, vertex3f + e[2] * 3, texcoord2f + e[0] * 2, texcoord2f + e[1] * 2, texcoord2f + e[2] * 2, sdir, tdir, normal);
+		v0 = vertex3f + e[0] * 3;
+		v1 = vertex3f + e[1] * 3;
+		v2 = vertex3f + e[2] * 3;
+		tc0 = texcoord2f + e[0] * 2;
+		tc1 = texcoord2f + e[1] * 2;
+		tc2 = texcoord2f + e[2] * 2;
+
+		// 79 add/sub/negate/multiply (1 cycle), 1 compare (3 cycle?), total cycles not counting load/store/exchange roughly 82 cycles
+		// 6 add, 28 subtract, 39 multiply, 1 compare, 50% chance of 6 negates
+
+		// calculate the edge directions and surface normal
+		// 6 multiply, 9 subtract
+		VectorSubtract(v1, v0, v10);
+		VectorSubtract(v2, v0, v20);
+		normal[0] = v20[1] * v10[2] - v20[2] * v10[1];
+		normal[1] = v20[2] * v10[0] - v20[0] * v10[2];
+		normal[2] = v20[0] * v10[1] - v20[1] * v10[0];
+
+		// calculate the tangents
+		// 12 multiply, 10 subtract
+		tc10[1] = tc1[1] - tc0[1];
+		tc20[1] = tc2[1] - tc0[1];
+		sdir[0] = tc10[1] * v20[0] - tc20[1] * v10[0];
+		sdir[1] = tc10[1] * v20[1] - tc20[1] * v10[1];
+		sdir[2] = tc10[1] * v20[2] - tc20[1] * v10[2];
+		tc10[0] = tc1[0] - tc0[0];
+		tc20[0] = tc2[0] - tc0[0];
+		tdir[0] = tc10[0] * v20[0] - tc20[0] * v10[0];
+		tdir[1] = tc10[0] * v20[1] - tc20[0] * v10[1];
+		tdir[2] = tc10[0] * v20[2] - tc20[0] * v10[2];
+
+		// if texture is mapped the wrong way (counterclockwise), the tangents
+		// have to be flipped, this is detected by calculating a normal from the
+		// two tangents, and seeing if it is opposite the surface normal
+		// 9 multiply, 2 add, 3 subtract, 1 compare, 50% chance of: 6 negates
+		CrossProduct(tdir, sdir, tangentcross);
+		if (DotProduct(tangentcross, normal) < 0)
+		{
+			VectorNegate(sdir, sdir);
+			VectorNegate(tdir, tdir);
+		}
+
 		if (!areaweighting)
 		{
 			VectorNormalize(sdir);
 			VectorNormalize(tdir);
-			VectorNormalize(normal);
 		}
-		if (svector3f)
-			for (i = 0;i < 3;i++)
-				VectorAdd(svector3f + e[i]*3, sdir, svector3f + e[i]*3);
-		if (tvector3f)
-			for (i = 0;i < 3;i++)
-				VectorAdd(tvector3f + e[i]*3, tdir, tvector3f + e[i]*3);
-		if (normal3f)
-			for (i = 0;i < 3;i++)
-				VectorAdd(normal3f + e[i]*3, normal, normal3f + e[i]*3);
+		for (i = 0;i < 3;i++)
+		{
+			VectorAdd(svector3f + e[i]*3, sdir, svector3f + e[i]*3);
+			VectorAdd(tvector3f + e[i]*3, tdir, tvector3f + e[i]*3);
+		}
+	}
+	// make the tangents completely perpendicular to the surface normal, and
+	// then normalize them
+	// 16 assignments, 2 divide, 2 sqrt, 2 negates, 14 adds, 24 multiplies
+	for (i = 0, sv = svector3f + 3 * firstvertex, tv = tvector3f + 3 * firstvertex, n = normal3f + 3 * firstvertex;i < numvertices;i++, sv += 3, tv += 3, n += 3)
+	{
+		f = -DotProduct(sv, n);
+		VectorMA(sv, f, n, sv);
+		VectorNormalize(sv);
+		f = -DotProduct(tv, n);
+		VectorMA(tv, f, n, tv);
+		VectorNormalize(tv);
 	}
-	// now we could divide the vectors by the number of averaged values on
-	// each vertex...  but instead normalize them
-	// 4 assignments, 1 divide, 1 sqrt, 2 adds, 6 multiplies
-	if (svector3f)
-		for (i = 0, v = svector3f + 3 * firstvertex;i < numvertices;i++, v += 3)
-			VectorNormalize(v);
-	// 4 assignments, 1 divide, 1 sqrt, 2 adds, 6 multiplies
-	if (tvector3f)
-		for (i = 0, v = tvector3f + 3 * firstvertex;i < numvertices;i++, v += 3)
-			VectorNormalize(v);
-	// 4 assignments, 1 divide, 1 sqrt, 2 adds, 6 multiplies
-	if (normal3f)
-		for (i = 0, v = normal3f + 3 * firstvertex;i < numvertices;i++, v += 3)
-			VectorNormalize(v);
 }
 
-surfmesh_t *Mod_AllocSurfMesh(mempool_t *mempool, int numvertices, int numtriangles, qboolean detailtexcoords, qboolean lightmapoffsets, qboolean vertexcolors, qboolean neighbors)
+void Mod_AllocSurfMesh(mempool_t *mempool, int numvertices, int numtriangles, qboolean lightmapoffsets, qboolean vertexcolors, qboolean neighbors)
 {
-	surfmesh_t *mesh;
-	qbyte *data;
-	mesh = Mem_Alloc(mempool, sizeof(surfmesh_t) + numvertices * (3 + 3 + 3 + 3 + 2 + 2 + (detailtexcoords ? 2 : 0) + (vertexcolors ? 4 : 0)) * sizeof(float) + numvertices * (lightmapoffsets ? 1 : 0) * sizeof(int) + numtriangles * (3 + 3 + (neighbors ? 3 : 0)) * sizeof(int));
-	mesh->num_vertices = numvertices;
-	mesh->num_triangles = numtriangles;
-	data = (qbyte *)(mesh + 1);
-	if (mesh->num_vertices)
+	unsigned char *data;
+	data = (unsigned char *)Mem_Alloc(mempool, numvertices * (3 + 3 + 3 + 3 + 2 + 2 + (vertexcolors ? 4 : 0)) * sizeof(float) + numvertices * (lightmapoffsets ? 1 : 0) * sizeof(int) + numtriangles * (3 + (neighbors ? 3 : 0)) * sizeof(int));
+	loadmodel->surfmesh.num_vertices = numvertices;
+	loadmodel->surfmesh.num_triangles = numtriangles;
+	if (loadmodel->surfmesh.num_vertices)
 	{
-		mesh->data_vertex3f = (float *)data, data += sizeof(float[3]) * mesh->num_vertices;
-		mesh->data_svector3f = (float *)data, data += sizeof(float[3]) * mesh->num_vertices;
-		mesh->data_tvector3f = (float *)data, data += sizeof(float[3]) * mesh->num_vertices;
-		mesh->data_normal3f = (float *)data, data += sizeof(float[3]) * mesh->num_vertices;
-		mesh->data_texcoordtexture2f = (float *)data, data += sizeof(float[2]) * mesh->num_vertices;
-		mesh->data_texcoordlightmap2f = (float *)data, data += sizeof(float[2]) * mesh->num_vertices;
-		if (detailtexcoords)
-			mesh->data_texcoorddetail2f = (float *)data, data += sizeof(float[2]) * mesh->num_vertices;
+		loadmodel->surfmesh.data_vertex3f = (float *)data, data += sizeof(float[3]) * loadmodel->surfmesh.num_vertices;
+		loadmodel->surfmesh.data_svector3f = (float *)data, data += sizeof(float[3]) * loadmodel->surfmesh.num_vertices;
+		loadmodel->surfmesh.data_tvector3f = (float *)data, data += sizeof(float[3]) * loadmodel->surfmesh.num_vertices;
+		loadmodel->surfmesh.data_normal3f = (float *)data, data += sizeof(float[3]) * loadmodel->surfmesh.num_vertices;
+		loadmodel->surfmesh.data_texcoordtexture2f = (float *)data, data += sizeof(float[2]) * loadmodel->surfmesh.num_vertices;
+		loadmodel->surfmesh.data_texcoordlightmap2f = (float *)data, data += sizeof(float[2]) * loadmodel->surfmesh.num_vertices;
 		if (vertexcolors)
-			mesh->data_lightmapcolor4f = (float *)data, data += sizeof(float[4]) * mesh->num_vertices;
+			loadmodel->surfmesh.data_lightmapcolor4f = (float *)data, data += sizeof(float[4]) * loadmodel->surfmesh.num_vertices;
 		if (lightmapoffsets)
-			mesh->data_lightmapoffsets = (int *)data, data += sizeof(int) * mesh->num_vertices;
+			loadmodel->surfmesh.data_lightmapoffsets = (int *)data, data += sizeof(int) * loadmodel->surfmesh.num_vertices;
 	}
-	if (mesh->num_triangles)
+	if (loadmodel->surfmesh.num_triangles)
 	{
-		mesh->data_element3i = (int *)data, data += sizeof(int[3]) * mesh->num_triangles;
-		mesh->data_element3i = (int *)data, data += sizeof(int[3]) * mesh->num_triangles;
+		loadmodel->surfmesh.data_element3i = (int *)data, data += sizeof(int[3]) * loadmodel->surfmesh.num_triangles;
 		if (neighbors)
-			mesh->data_neighbor3i = (int *)data, data += sizeof(int[3]) * mesh->num_triangles;
+			loadmodel->surfmesh.data_neighbor3i = (int *)data, data += sizeof(int[3]) * loadmodel->surfmesh.num_triangles;
 	}
-	return mesh;
 }
 
 shadowmesh_t *Mod_ShadowMesh_Alloc(mempool_t *mempool, int maxverts, int maxtriangles, rtexture_t *map_diffuse, rtexture_t *map_specular, rtexture_t *map_normal, int light, int neighbors, int expandable)
 {
 	shadowmesh_t *newmesh;
-	qbyte *data;
+	unsigned char *data;
 	int size;
 	size = sizeof(shadowmesh_t);
 	size += maxverts * sizeof(float[3]);
@@ -669,8 +775,8 @@ shadowmesh_t *Mod_ShadowMesh_Alloc(mempool_t *mempool, int maxverts, int maxtria
 		size += maxtriangles * sizeof(int[3]);
 	if (expandable)
 		size += SHADOWMESHVERTEXHASH * sizeof(shadowmeshvertexhash_t *) + maxverts * sizeof(shadowmeshvertexhash_t);
-	data = Mem_Alloc(mempool, size);
-	newmesh = (void *)data;data += sizeof(*newmesh);
+	data = (unsigned char *)Mem_Alloc(mempool, size);
+	newmesh = (shadowmesh_t *)data;data += sizeof(*newmesh);
 	newmesh->map_diffuse = map_diffuse;
 	newmesh->map_specular = map_specular;
 	newmesh->map_normal = map_normal;
@@ -679,23 +785,23 @@ shadowmesh_t *Mod_ShadowMesh_Alloc(mempool_t *mempool, int maxverts, int maxtria
 	newmesh->numverts = 0;
 	newmesh->numtriangles = 0;
 
-	newmesh->vertex3f = (void *)data;data += maxverts * sizeof(float[3]);
+	newmesh->vertex3f = (float *)data;data += maxverts * sizeof(float[3]);
 	if (light)
 	{
-		newmesh->svector3f = (void *)data;data += maxverts * sizeof(float[3]);
-		newmesh->tvector3f = (void *)data;data += maxverts * sizeof(float[3]);
-		newmesh->normal3f = (void *)data;data += maxverts * sizeof(float[3]);
-		newmesh->texcoord2f = (void *)data;data += maxverts * sizeof(float[2]);
+		newmesh->svector3f = (float *)data;data += maxverts * sizeof(float[3]);
+		newmesh->tvector3f = (float *)data;data += maxverts * sizeof(float[3]);
+		newmesh->normal3f = (float *)data;data += maxverts * sizeof(float[3]);
+		newmesh->texcoord2f = (float *)data;data += maxverts * sizeof(float[2]);
 	}
-	newmesh->element3i = (void *)data;data += maxtriangles * sizeof(int[3]);
+	newmesh->element3i = (int *)data;data += maxtriangles * sizeof(int[3]);
 	if (neighbors)
 	{
-		newmesh->neighbor3i = (void *)data;data += maxtriangles * sizeof(int[3]);
+		newmesh->neighbor3i = (int *)data;data += maxtriangles * sizeof(int[3]);
 	}
 	if (expandable)
 	{
-		newmesh->vertexhashtable = (void *)data;data += SHADOWMESHVERTEXHASH * sizeof(shadowmeshvertexhash_t *);
-		newmesh->vertexhashentries = (void *)data;data += maxverts * sizeof(shadowmeshvertexhash_t);
+		newmesh->vertexhashtable = (shadowmeshvertexhash_t **)data;data += SHADOWMESHVERTEXHASH * sizeof(shadowmeshvertexhash_t *);
+		newmesh->vertexhashentries = (shadowmeshvertexhash_t *)data;data += maxverts * sizeof(shadowmeshvertexhash_t);
 	}
 	return newmesh;
 }
@@ -820,7 +926,42 @@ shadowmesh_t *Mod_ShadowMesh_Begin(mempool_t *mempool, int maxverts, int maxtria
 	return Mod_ShadowMesh_Alloc(mempool, maxverts, maxtriangles, map_diffuse, map_specular, map_normal, light, neighbors, expandable);
 }
 
-shadowmesh_t *Mod_ShadowMesh_Finish(mempool_t *mempool, shadowmesh_t *firstmesh, int light, int neighbors)
+static void Mod_ShadowMesh_CreateVBOs(shadowmesh_t *mesh)
+{
+	if (!gl_support_arb_vertex_buffer_object)
+		return;
+
+	// element buffer is easy because it's just one array
+	if (mesh->numtriangles)
+		mesh->ebo = R_Mesh_CreateStaticBufferObject(GL_ELEMENT_ARRAY_BUFFER_ARB, mesh->element3i, mesh->numtriangles * sizeof(int[3]), "shadowmesh");
+
+	// vertex buffer is several arrays and we put them in the same buffer
+	//
+	// is this wise?  the texcoordtexture2f array is used with dynamic
+	// vertex/svector/tvector/normal when rendering animated models, on the
+	// other hand animated models don't use a lot of vertices anyway...
+	if (mesh->numverts)
+	{
+		size_t size;
+		unsigned char *mem;
+		size = 0;
+		mesh->vbooffset_vertex3f           = size;if (mesh->vertex3f          ) size += mesh->numverts * sizeof(float[3]);
+		mesh->vbooffset_svector3f          = size;if (mesh->svector3f         ) size += mesh->numverts * sizeof(float[3]);
+		mesh->vbooffset_tvector3f          = size;if (mesh->tvector3f         ) size += mesh->numverts * sizeof(float[3]);
+		mesh->vbooffset_normal3f           = size;if (mesh->normal3f          ) size += mesh->numverts * sizeof(float[3]);
+		mesh->vbooffset_texcoord2f         = size;if (mesh->texcoord2f        ) size += mesh->numverts * sizeof(float[2]);
+		mem = (unsigned char *)Mem_Alloc(tempmempool, size);
+		if (mesh->vertex3f          ) memcpy(mem + mesh->vbooffset_vertex3f          , mesh->vertex3f          , mesh->numverts * sizeof(float[3]));
+		if (mesh->svector3f         ) memcpy(mem + mesh->vbooffset_svector3f         , mesh->svector3f         , mesh->numverts * sizeof(float[3]));
+		if (mesh->tvector3f         ) memcpy(mem + mesh->vbooffset_tvector3f         , mesh->tvector3f         , mesh->numverts * sizeof(float[3]));
+		if (mesh->normal3f          ) memcpy(mem + mesh->vbooffset_normal3f          , mesh->normal3f          , mesh->numverts * sizeof(float[3]));
+		if (mesh->texcoord2f        ) memcpy(mem + mesh->vbooffset_texcoord2f        , mesh->texcoord2f        , mesh->numverts * sizeof(float[2]));
+		mesh->vbo = R_Mesh_CreateStaticBufferObject(GL_ARRAY_BUFFER_ARB, mem, size, "shadowmesh");
+		Mem_Free(mem);
+	}
+}
+
+shadowmesh_t *Mod_ShadowMesh_Finish(mempool_t *mempool, shadowmesh_t *firstmesh, qboolean light, qboolean neighbors, qboolean createvbo)
 {
 	shadowmesh_t *mesh, *newmesh, *nextmesh;
 	// reallocate meshs to conserve space
@@ -832,6 +973,8 @@ shadowmesh_t *Mod_ShadowMesh_Finish(mempool_t *mempool, shadowmesh_t *firstmesh,
 			newmesh = Mod_ShadowMesh_ReAlloc(mempool, mesh, light, neighbors);
 			newmesh->next = firstmesh;
 			firstmesh = newmesh;
+			if (createvbo)
+				Mod_ShadowMesh_CreateVBOs(newmesh);
 		}
 		Mem_Free(mesh);
 	}
@@ -844,6 +987,8 @@ void Mod_ShadowMesh_CalcBBox(shadowmesh_t *firstmesh, vec3_t mins, vec3_t maxs,
 	shadowmesh_t *mesh;
 	vec3_t nmins, nmaxs, ncenter, temp;
 	float nradius2, dist2, *v;
+	VectorClear(nmins);
+	VectorClear(nmaxs);
 	// calculate bbox
 	for (mesh = firstmesh;mesh;mesh = mesh->next)
 	{
@@ -890,93 +1035,16 @@ void Mod_ShadowMesh_Free(shadowmesh_t *mesh)
 	shadowmesh_t *nextmesh;
 	for (;mesh;mesh = nextmesh)
 	{
+		if (mesh->ebo)
+			R_Mesh_DestroyBufferObject(mesh->ebo);
+		if (mesh->vbo)
+			R_Mesh_DestroyBufferObject(mesh->vbo);
 		nextmesh = mesh->next;
 		Mem_Free(mesh);
 	}
 }
 
-static rtexture_t *GL_TextureForSkinLayer(const qbyte *in, int width, int height, const char *name, const unsigned int *palette, int textureflags)
-{
-	int i;
-	for (i = 0;i < width*height;i++)
-		if (((qbyte *)&palette[in[i]])[3] > 0)
-			return R_LoadTexture2D (loadmodel->texturepool, name, width, height, in, TEXTYPE_PALETTE, textureflags, palette);
-	return NULL;
-}
-
-static int detailtexturecycle = 0;
-int Mod_LoadSkinFrame(skinframe_t *skinframe, char *basename, int textureflags, int loadpantsandshirt, int usedetailtexture, int loadglowtexture)
-{
-	imageskin_t s;
-	memset(skinframe, 0, sizeof(*skinframe));
-	if (!image_loadskin(&s, basename))
-		return false;
-	if (usedetailtexture)
-		skinframe->detail = r_texture_detailtextures[(detailtexturecycle++) % NUM_DETAILTEXTURES];
-	skinframe->base = R_LoadTexture2D (loadmodel->texturepool, basename, s.basepixels_width, s.basepixels_height, s.basepixels, TEXTYPE_RGBA, textureflags, NULL);
-	if (s.nmappixels != NULL)
-		skinframe->nmap = R_LoadTexture2D (loadmodel->texturepool, va("%s_nmap", basename), s.nmappixels_width, s.nmappixels_height, s.nmappixels, TEXTYPE_RGBA, textureflags, NULL);
-	if (s.glosspixels != NULL)
-		skinframe->gloss = R_LoadTexture2D (loadmodel->texturepool, va("%s_gloss", basename), s.glosspixels_width, s.glosspixels_height, s.glosspixels, TEXTYPE_RGBA, textureflags, NULL);
-	if (s.glowpixels != NULL && loadglowtexture)
-		skinframe->glow = R_LoadTexture2D (loadmodel->texturepool, va("%s_glow", basename), s.glowpixels_width, s.glowpixels_height, s.glowpixels, TEXTYPE_RGBA, textureflags, NULL);
-	if (s.maskpixels != NULL)
-		skinframe->fog = R_LoadTexture2D (loadmodel->texturepool, va("%s_mask", basename), s.maskpixels_width, s.maskpixels_height, s.maskpixels, TEXTYPE_RGBA, textureflags, NULL);
-	if (loadpantsandshirt)
-	{
-		if (s.pantspixels != NULL)
-			skinframe->pants = R_LoadTexture2D (loadmodel->texturepool, va("%s_pants", basename), s.pantspixels_width, s.pantspixels_height, s.pantspixels, TEXTYPE_RGBA, textureflags, NULL);
-		if (s.shirtpixels != NULL)
-			skinframe->shirt = R_LoadTexture2D (loadmodel->texturepool, va("%s_shirt", basename), s.shirtpixels_width, s.shirtpixels_height, s.shirtpixels, TEXTYPE_RGBA, textureflags, NULL);
-	}
-	image_freeskin(&s);
-	return true;
-}
-
-int Mod_LoadSkinFrame_Internal(skinframe_t *skinframe, char *basename, int textureflags, int loadpantsandshirt, int usedetailtexture, int loadglowtexture, qbyte *skindata, int width, int height)
-{
-	qbyte *temp1, *temp2;
-	memset(skinframe, 0, sizeof(*skinframe));
-	if (!skindata)
-		return false;
-	if (usedetailtexture)
-		skinframe->detail = r_texture_detailtextures[(detailtexturecycle++) % NUM_DETAILTEXTURES];
-	if (r_shadow_bumpscale_basetexture.value > 0)
-	{
-		temp1 = Mem_Alloc(loadmodel->mempool, width * height * 8);
-		temp2 = temp1 + width * height * 4;
-		Image_Copy8bitRGBA(skindata, temp1, width * height, palette_nofullbrights);
-		Image_HeightmapToNormalmap(temp1, temp2, width, height, false, r_shadow_bumpscale_basetexture.value);
-		skinframe->nmap = R_LoadTexture2D(loadmodel->texturepool, va("%s_nmap", basename), width, height, temp2, TEXTYPE_RGBA, textureflags, NULL);
-		Mem_Free(temp1);
-	}
-	if (loadglowtexture)
-	{
-		skinframe->glow = GL_TextureForSkinLayer(skindata, width, height, va("%s_glow", basename), palette_onlyfullbrights, textureflags); // glow
-		skinframe->base = skinframe->merged = GL_TextureForSkinLayer(skindata, width, height, va("%s_merged", basename), palette_nofullbrights, textureflags); // all but fullbrights
-		if (loadpantsandshirt)
-		{
-			skinframe->pants = GL_TextureForSkinLayer(skindata, width, height, va("%s_pants", basename), palette_pantsaswhite, textureflags); // pants
-			skinframe->shirt = GL_TextureForSkinLayer(skindata, width, height, va("%s_shirt", basename), palette_shirtaswhite, textureflags); // shirt
-			if (skinframe->pants || skinframe->shirt)
-				skinframe->base = GL_TextureForSkinLayer(skindata, width, height, va("%s_nospecial", basename), palette_nocolormapnofullbrights, textureflags); // no special colors
-		}
-	}
-	else
-	{
-		skinframe->base = skinframe->merged = GL_TextureForSkinLayer(skindata, width, height, va("%s_merged", basename), palette_complete, textureflags); // all
-		if (loadpantsandshirt)
-		{
-			skinframe->pants = GL_TextureForSkinLayer(skindata, width, height, va("%s_pants", basename), palette_pantsaswhite, textureflags); // pants
-			skinframe->shirt = GL_TextureForSkinLayer(skindata, width, height, va("%s_shirt", basename), palette_shirtaswhite, textureflags); // shirt
-			if (skinframe->pants || skinframe->shirt)
-				skinframe->base = GL_TextureForSkinLayer(skindata, width, height, va("%s_nospecial", basename), palette_nocolormap, textureflags); // no pants or shirt
-		}
-	}
-	return true;
-}
-
-void Mod_GetTerrainVertex3fTexCoord2fFromRGBA(const qbyte *imagepixels, int imagewidth, int imageheight, int ix, int iy, float *vertex3f, float *texcoord2f, matrix4x4_t *pixelstepmatrix, matrix4x4_t *pixeltexturestepmatrix)
+void Mod_GetTerrainVertex3fTexCoord2fFromRGBA(const unsigned char *imagepixels, int imagewidth, int imageheight, int ix, int iy, float *vertex3f, float *texcoord2f, matrix4x4_t *pixelstepmatrix, matrix4x4_t *pixeltexturestepmatrix)
 {
 	float v[3], tc[3];
 	v[0] = ix;
@@ -991,7 +1059,7 @@ void Mod_GetTerrainVertex3fTexCoord2fFromRGBA(const qbyte *imagepixels, int imag
 	texcoord2f[1] = tc[1];
 }
 
-void Mod_GetTerrainVertexFromRGBA(const qbyte *imagepixels, int imagewidth, int imageheight, int ix, int iy, float *vertex3f, float *svector3f, float *tvector3f, float *normal3f, float *texcoord2f, matrix4x4_t *pixelstepmatrix, matrix4x4_t *pixeltexturestepmatrix)
+void Mod_GetTerrainVertexFromRGBA(const unsigned char *imagepixels, int imagewidth, int imageheight, int ix, int iy, float *vertex3f, float *svector3f, float *tvector3f, float *normal3f, float *texcoord2f, matrix4x4_t *pixelstepmatrix, matrix4x4_t *pixeltexturestepmatrix)
 {
 	float vup[3], vdown[3], vleft[3], vright[3];
 	float tcup[3], tcdown[3], tcleft[3], tcright[3];
@@ -1016,7 +1084,7 @@ void Mod_GetTerrainVertexFromRGBA(const qbyte *imagepixels, int imagewidth, int
 	VectorAdd(normal3f, nl, normal3f);
 }
 
-void Mod_ConstructTerrainPatchFromRGBA(const qbyte *imagepixels, int imagewidth, int imageheight, int x1, int y1, int width, int height, int *element3i, int *neighbor3i, float *vertex3f, float *svector3f, float *tvector3f, float *normal3f, float *texcoord2f, matrix4x4_t *pixelstepmatrix, matrix4x4_t *pixeltexturestepmatrix)
+void Mod_ConstructTerrainPatchFromRGBA(const unsigned char *imagepixels, int imagewidth, int imageheight, int x1, int y1, int width, int height, int *element3i, int *neighbor3i, float *vertex3f, float *svector3f, float *tvector3f, float *normal3f, float *texcoord2f, matrix4x4_t *pixelstepmatrix, matrix4x4_t *pixeltexturestepmatrix)
 {
 	int x, y, ix, iy, *e;
 	e = element3i;
@@ -1067,19 +1135,19 @@ tag_torso,
 */
 	memset(tagsets, 0, sizeof(tagsets));
 	memset(word, 0, sizeof(word));
-	for (i = 0;i < MAX_SKINS && (data = text = FS_LoadFile(va("%s_%i.skin", loadmodel->name, i), tempmempool, true));i++)
+	for (i = 0;i < MAX_SKINS && (data = text = (char *)FS_LoadFile(va("%s_%i.skin", loadmodel->name, i), tempmempool, true, NULL));i++)
 	{
 		numtags = 0;
 
 		// If it's the first file we parse
 		if (skinfile == NULL)
 		{
-			skinfile = Mem_Alloc(tempmempool, sizeof(skinfile_t));
+			skinfile = (skinfile_t *)Mem_Alloc(loadmodel->mempool, sizeof(skinfile_t));
 			first = skinfile;
 		}
 		else
 		{
-			skinfile->next = Mem_Alloc(tempmempool, sizeof(skinfile_t));
+			skinfile->next = (skinfile_t *)Mem_Alloc(loadmodel->mempool, sizeof(skinfile_t));
 			skinfile = skinfile->next;
 		}
 		skinfile->next = NULL;
@@ -1112,7 +1180,7 @@ tag_torso,
 				if (words == 3)
 				{
 					Con_DPrintf("Mod_LoadSkinFiles: parsed mesh \"%s\" shader replacement \"%s\"\n", word[1], word[2]);
-					skinfileitem = Mem_Alloc(tempmempool, sizeof(skinfileitem_t));
+					skinfileitem = (skinfileitem_t *)Mem_Alloc(loadmodel->mempool, sizeof(skinfileitem_t));
 					skinfileitem->next = skinfile->items;
 					skinfile->items = skinfileitem;
 					strlcpy (skinfileitem->name, word[1], sizeof (skinfileitem->name));
@@ -1133,7 +1201,7 @@ tag_torso,
 			{
 				// mesh shader name, like "U_RArm,models/players/Legoman/BikerA1.tga"
 				Con_DPrintf("Mod_LoadSkinFiles: parsed mesh \"%s\" shader replacement \"%s\"\n", word[0], word[2]);
-				skinfileitem = Mem_Alloc(tempmempool, sizeof(skinfileitem_t));
+				skinfileitem = (skinfileitem_t *)Mem_Alloc(loadmodel->mempool, sizeof(skinfileitem_t));
 				skinfileitem->next = skinfile->items;
 				skinfile->items = skinfileitem;
 				strlcpy (skinfileitem->name, word[0], sizeof (skinfileitem->name));
@@ -1149,14 +1217,14 @@ tag_torso,
 			overridetagnameset_t *t;
 			t = tagsets + i;
 			t->num_overridetagnames = numtags;
-			t->data_overridetagnames = Mem_Alloc(loadmodel->mempool, t->num_overridetagnames * sizeof(overridetagname_t));
+			t->data_overridetagnames = (overridetagname_t *)Mem_Alloc(loadmodel->mempool, t->num_overridetagnames * sizeof(overridetagname_t));
 			memcpy(t->data_overridetagnames, tags, t->num_overridetagnames * sizeof(overridetagname_t));
 			tagsetsused = true;
 		}
 	}
 	if (tagsetsused)
 	{
-		loadmodel->data_overridetagnamesforskin = Mem_Alloc(loadmodel->mempool, i * sizeof(overridetagnameset_t));
+		loadmodel->data_overridetagnamesforskin = (overridetagnameset_t *)Mem_Alloc(loadmodel->mempool, i * sizeof(overridetagnameset_t));
 		memcpy(loadmodel->data_overridetagnamesforskin, tagsets, i * sizeof(overridetagnameset_t));
 	}
 	if (i)
@@ -1222,3 +1290,63 @@ int Mod_RemoveDegenerateTriangles(int numtriangles, const int *inelement3i, int
 	return outtriangles;
 }
 
+void Mod_VertexRangeFromElements(int numelements, const int *elements, int *firstvertexpointer, int *lastvertexpointer)
+{
+	int i, e;
+	int firstvertex, lastvertex;
+	if (numelements > 0 && elements)
+	{
+		firstvertex = lastvertex = elements[0];
+		for (i = 1;i < numelements;i++)
+		{
+			e = elements[i];
+			firstvertex = min(firstvertex, e);
+			lastvertex = max(lastvertex, e);
+		}
+	}
+	else
+		firstvertex = lastvertex = 0;
+	if (firstvertexpointer)
+		*firstvertexpointer = firstvertex;
+	if (lastvertexpointer)
+		*lastvertexpointer = lastvertex;
+}
+
+static void Mod_BuildVBOs(void)
+{
+	if (!gl_support_arb_vertex_buffer_object)
+		return;
+
+	// element buffer is easy because it's just one array
+	if (loadmodel->surfmesh.num_triangles)
+		loadmodel->surfmesh.ebo = R_Mesh_CreateStaticBufferObject(GL_ELEMENT_ARRAY_BUFFER_ARB, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles * sizeof(int[3]), loadmodel->name);
+
+	// vertex buffer is several arrays and we put them in the same buffer
+	//
+	// is this wise?  the texcoordtexture2f array is used with dynamic
+	// vertex/svector/tvector/normal when rendering animated models, on the
+	// other hand animated models don't use a lot of vertices anyway...
+	if (loadmodel->surfmesh.num_vertices)
+	{
+		size_t size;
+		unsigned char *mem;
+		size = 0;
+		loadmodel->surfmesh.vbooffset_vertex3f           = size;if (loadmodel->surfmesh.data_vertex3f          ) size += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
+		loadmodel->surfmesh.vbooffset_svector3f          = size;if (loadmodel->surfmesh.data_svector3f         ) size += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
+		loadmodel->surfmesh.vbooffset_tvector3f          = size;if (loadmodel->surfmesh.data_tvector3f         ) size += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
+		loadmodel->surfmesh.vbooffset_normal3f           = size;if (loadmodel->surfmesh.data_normal3f          ) size += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
+		loadmodel->surfmesh.vbooffset_texcoordtexture2f  = size;if (loadmodel->surfmesh.data_texcoordtexture2f ) size += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
+		loadmodel->surfmesh.vbooffset_texcoordlightmap2f = size;if (loadmodel->surfmesh.data_texcoordlightmap2f) size += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
+		loadmodel->surfmesh.vbooffset_lightmapcolor4f    = size;if (loadmodel->surfmesh.data_lightmapcolor4f   ) size += loadmodel->surfmesh.num_vertices * sizeof(float[4]);
+		mem = (unsigned char *)Mem_Alloc(tempmempool, size);
+		if (loadmodel->surfmesh.data_vertex3f          ) memcpy(mem + loadmodel->surfmesh.vbooffset_vertex3f          , loadmodel->surfmesh.data_vertex3f          , loadmodel->surfmesh.num_vertices * sizeof(float[3]));
+		if (loadmodel->surfmesh.data_svector3f         ) memcpy(mem + loadmodel->surfmesh.vbooffset_svector3f         , loadmodel->surfmesh.data_svector3f         , loadmodel->surfmesh.num_vertices * sizeof(float[3]));
+		if (loadmodel->surfmesh.data_tvector3f         ) memcpy(mem + loadmodel->surfmesh.vbooffset_tvector3f         , loadmodel->surfmesh.data_tvector3f         , loadmodel->surfmesh.num_vertices * sizeof(float[3]));
+		if (loadmodel->surfmesh.data_normal3f          ) memcpy(mem + loadmodel->surfmesh.vbooffset_normal3f          , loadmodel->surfmesh.data_normal3f          , loadmodel->surfmesh.num_vertices * sizeof(float[3]));
+		if (loadmodel->surfmesh.data_texcoordtexture2f ) memcpy(mem + loadmodel->surfmesh.vbooffset_texcoordtexture2f , loadmodel->surfmesh.data_texcoordtexture2f , loadmodel->surfmesh.num_vertices * sizeof(float[2]));
+		if (loadmodel->surfmesh.data_texcoordlightmap2f) memcpy(mem + loadmodel->surfmesh.vbooffset_texcoordlightmap2f, loadmodel->surfmesh.data_texcoordlightmap2f, loadmodel->surfmesh.num_vertices * sizeof(float[2]));
+		if (loadmodel->surfmesh.data_lightmapcolor4f   ) memcpy(mem + loadmodel->surfmesh.vbooffset_lightmapcolor4f   , loadmodel->surfmesh.data_lightmapcolor4f   , loadmodel->surfmesh.num_vertices * sizeof(float[4]));
+		loadmodel->surfmesh.vbo = R_Mesh_CreateStaticBufferObject(GL_ARRAY_BUFFER_ARB, mem, size, loadmodel->name);
+		Mem_Free(mem);
+	}
+}