fteqw/engine/gl/gl_model.c

/*
Copyright (C) 1996-1997 Id Software, Inc.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
// models.c -- model loading and caching

// models are the only shared resource between a client and server running
// on the same machine.

#include "quakedef.h"


#ifndef SERVERONLY	//FIXME
#include "glquake.h"
#include "com_mesh.h"

extern cvar_t r_shadow_bumpscale_basetexture;
extern cvar_t r_replacemodels;

qboolean isnotmap = true;	//used to not warp ammo models.

model_t	*loadmodel;
char	loadname[32];	// for hunk tags

void CM_Init(void);

qboolean QDECL Mod_LoadSpriteModel (model_t *mod, void *buffer);
qboolean QDECL Mod_LoadSprite2Model (model_t *mod, void *buffer);
qboolean QDECL Mod_LoadBrushModel (model_t *mod, void *buffer);
#ifdef Q2BSPS
qboolean QDECL Mod_LoadQ2BrushModel (model_t *mod, void *buffer);
#endif
model_t *Mod_LoadModel (model_t *mod, qboolean crash);

#ifdef MAP_DOOM
qboolean Mod_LoadDoomLevel(model_t *mod);
#endif

#ifdef DOOMWADS
void Mod_LoadDoomSprite (model_t *mod);
#endif

#define	MAX_MOD_KNOWN	8192
model_t	mod_known[MAX_MOD_KNOWN];
int		mod_numknown;

extern cvar_t r_loadlits;
#ifdef SPECULAR
extern cvar_t gl_specular;
#endif
extern cvar_t r_fb_bmodels;
mesh_t nullmesh;
void Mod_SortShaders(void);

#ifdef RUNTIMELIGHTING
model_t *lightmodel;
int numlightdata;
qboolean writelitfile;

long relitsurface;
void Mod_UpdateLightmap(int snum)
{
	msurface_t *s;	
	if (lightmodel)
	{
//		int i;
//		for (s = lightmodel->surfaces,i=0; i < lightmodel->numsurfaces; i++,s++)
//			s->cached_dlight = -1;

		if (snum < lightmodel->numsurfaces)
		{
			s = lightmodel->surfaces + snum;
			s->cached_dlight = -1;
		}
		else
			Con_Printf("lit non-existant surface\n");
	}
}
#endif


void Mod_MemList_f(void)
{
	int m;
	model_t *mod;
	int total = 0;
	for (m=0 , mod=mod_known ; m<mod_numknown ; m++, mod++)
	{
		if (mod->memgroup.bytes)
			Con_Printf("%s: %i bytes\n", mod->name, mod->memgroup.bytes);
		total += mod->memgroup.bytes;
	}
	Con_Printf("Total: %i bytes\n", total);
}

void Mod_BatchList_f(void)
{
	int m, i;
	model_t *mod;
	batch_t *batch;
	unsigned int count;
	for (m=0 , mod=mod_known ; m<mod_numknown ; m++, mod++)
	{
		if (mod->type == mod_brush && !mod->needload)
		{
			Con_Printf("%s:\n", mod->name);
			count = 0;
			for (i = 0; i < SHADER_SORT_COUNT; i++)
			{
				for (batch = mod->batches[i]; batch; batch = batch->next)
				{
#if MAXRLIGHTMAPS > 1
					if (batch->lightmap[3] >= 0)
						Con_Printf("%s lm=(%i:%i %i:%i %i:%i %i:%i) surfs=%u\n", batch->texture->shader->name, batch->lightmap[0], batch->lmlightstyle[0], batch->lightmap[1], batch->lmlightstyle[1], batch->lightmap[2], batch->lmlightstyle[2], batch->lightmap[3], batch->lmlightstyle[3], batch->maxmeshes);
					else if (batch->lightmap[2] >= 0)
						Con_Printf("%s lm=(%i:%i %i:%i %i:%i) surfs=%u\n", batch->texture->shader->name, batch->lightmap[0], batch->lmlightstyle[0], batch->lightmap[1], batch->lmlightstyle[1], batch->lightmap[2], batch->lmlightstyle[2], batch->maxmeshes);
					else if (batch->lightmap[1] >= 0)
						Con_Printf("%s lm=(%i:%i %i:%i) surfs=%u\n", batch->texture->shader->name, batch->lightmap[0], batch->lmlightstyle[0], batch->lightmap[1], batch->lmlightstyle[1], batch->maxmeshes);
					else
#endif
						if (batch->lmlightstyle[0] != 255)
						Con_Printf("%s lm=(%i:%i) surfs=%u\n", batch->texture->shader->name, batch->lightmap[0], batch->lmlightstyle[0], batch->maxmeshes);
					else
						Con_Printf("%s lm=%i surfs=%u\n", batch->texture->shader->name, batch->lightmap[0], batch->maxmeshes);
					count++;
				}
			}
			Con_Printf("%u\n", count);
		}
	}
}

void Mod_TextureList_f(void)
{
	int m, i;
	texture_t *tx;
	model_t *mod;
	qboolean shownmodelname = false;
	int count = 0;
	for (m=0 , mod=mod_known ; m<mod_numknown ; m++, mod++)
	{
		if (shownmodelname)
			Con_Printf("%u\n", count);
		shownmodelname = false;

		if (mod->type == mod_brush && !mod->needload)
		{
			if (*mod->name == '*')
				continue;//	inlines don't count
			if (shownmodelname)
				Con_Printf("%u\n", count);
			count = 0;
			shownmodelname = false;
			for (i = 0; i < mod->numtextures; i++)
			{
				tx = mod->textures[i];
				if (!tx)
					continue;	//happens on e1m2

				if (!shownmodelname)
				{
					shownmodelname = true;
					Con_Printf("%s\n", mod->name);
					count = 0;
				}

				Con_Printf("%s\n", tx->name);
				count++;
			}
		}
	}
	if (shownmodelname)
		Con_Printf("%u\n", count);
}

void Mod_BlockTextureColour_f (void)
{
	char texname[64];
	model_t *mod;
	texture_t *tx;
	shader_t *s;
	char *match = Cmd_Argv(1);

	int i, m;
	unsigned int colour[8*8];
	unsigned int rgba;

	((char *)&rgba)[0] = atoi(Cmd_Argv(2));
	((char *)&rgba)[1] = atoi(Cmd_Argv(3));
	((char *)&rgba)[2] = atoi(Cmd_Argv(4));
	((char *)&rgba)[3] = 255;

	sprintf(texname, "8*8_%i_%i_%i", (int)((char *)&rgba)[0], (int)((char *)&rgba)[1], (int)((char *)&rgba)[2]);

	s = R_RegisterCustom(Cmd_Argv(2), SUF_LIGHTMAP, NULL, NULL);
	if (!s)
	{
		s = R_RegisterCustom (texname, SUF_LIGHTMAP, Shader_DefaultBSPQ1, NULL);
	}

	for (i = 0; i < sizeof(colour)/sizeof(colour[0]); i++)
		colour[i] = rgba;

	for (m=0 , mod=mod_known ; m<mod_numknown ; m++, mod++)
	{
		if (mod->type == mod_brush && !mod->needload)
		{
			for (i = 0; i < mod->numtextures; i++)
			{
				tx = mod->textures[i];
				if (!tx)
					continue;	//happens on e1m2

				if (!stricmp(tx->name, match))
				{
					tx->shader = s;
				}
			}
		}
	}
}



#if defined(RUNTIMELIGHTING) && defined(MULTITHREAD)
void *relightthread[8];
unsigned int relightthreads;
volatile qboolean wantrelight;

int RelightThread(void *arg)
{
	int surf;
	while (wantrelight)
	{
#ifdef _WIN32
		surf = InterlockedIncrement(&relitsurface);
#else
		surf = relightthreads++;
#endif
		if (surf >= lightmodel->numsurfaces)
			break;
		LightFace(surf);
		lightmodel->surfaces[surf].cached_dlight = -1;
	}
	return 0;
}
#endif

void Mod_Think (void)
{
#ifdef RUNTIMELIGHTING
	if (lightmodel)
	{
#ifdef MULTITHREAD
		if (!relightthreads)
		{
			int i;
#ifdef _WIN32
			HANDLE me = GetCurrentProcess();
			DWORD_PTR proc, sys;
			/*count cpus*/
			GetProcessAffinityMask(me, &proc, &sys);
			relightthreads = 0;
			for (i = 0; i < sizeof(proc)*8; i++)
				if (proc & ((size_t)1u<<i))
					relightthreads++;
			/*subtract 1*/
			if (relightthreads <= 1)
				relightthreads = 1;
			else
				relightthreads--;
#else
			/*can't do atomics*/
			relightthreads = 1;
#endif
			if (relightthreads > sizeof(relightthread)/sizeof(relightthread[0]))
				relightthreads = sizeof(relightthread)/sizeof(relightthread[0]);
			wantrelight = true;
			for (i = 0; i < relightthreads; i++)
				relightthread[i] = Sys_CreateThread("relight", RelightThread, lightmodel, THREADP_NORMAL, 0);
		}
		if (relitsurface < lightmodel->numsurfaces)
		{
			return;
		}
#else
		LightFace(relitsurface);
		Mod_UpdateLightmap(relitsurface);

		relitsurface++;
#endif
		if (relitsurface >= lightmodel->numsurfaces)
		{
			vfsfile_t *f;
			char filename[MAX_QPATH];
			Con_Printf("Finished lighting %s\n", lightmodel->name);

#ifdef MULTITHREAD
			if (relightthreads)
			{
				int i;
				wantrelight = false;
				for (i = 0; i < relightthreads; i++)
				{
					Sys_WaitOnThread(relightthread[i]);
					relightthread[i] = NULL;
				}
				relightthreads = 0;
			}
#endif

			if (lightmodel->deluxdata)
			{
				COM_StripExtension(lightmodel->name, filename, sizeof(filename));
				COM_DefaultExtension(filename, ".lux", sizeof(filename));
				f = FS_OpenVFS(filename, "wb", FS_GAME);
				if (f)
				{
					VFS_WRITE(f, "QLIT\1\0\0\0", 8);
					VFS_WRITE(f, lightmodel->deluxdata, numlightdata*3);
					VFS_CLOSE(f);
				}
				else
					Con_Printf("Unable to write \"%s\"\n", filename);
			}

			if (writelitfile)	//the user might already have a lit file (don't overwrite it).
			{
				COM_StripExtension(lightmodel->name, filename, sizeof(filename));
				COM_DefaultExtension(filename, ".lit", sizeof(filename));

				f = FS_OpenVFS(filename, "wb", FS_GAME);
				if (f)
				{
					VFS_WRITE(f, "QLIT\1\0\0\0", 8);
					VFS_WRITE(f, lightmodel->lightdata, numlightdata*3);
					VFS_CLOSE(f);
				}
				else
					Con_Printf("Unable to write \"%s\"\n", filename);
			}
			lightmodel = NULL;
		}
	}
#endif
}

void Mod_RebuildLightmaps (void)
{
	int i, j;
	msurface_t *surf;
	model_t	*mod;

	for (i=0 , mod=mod_known ; i<mod_numknown ; i++, mod++)
	{
		if (mod->needload)
			continue;

		if (mod->type == mod_brush)
		{
			for (j=0, surf = mod->surfaces; j<mod->numsurfaces ; j++, surf++)
				surf->cached_dlight=-1;//force it
		}
	}
}

void Mod_ResortShaders(void)
{
	//called when some shader changed its sort key.
	//this means we have to hunt down all models and update their batches.
	//really its only bsps that need this.
	batch_t *oldlists[SHADER_SORT_COUNT], *b;
	int i, j, bs;
	model_t	*mod;
	for (i=0, mod=mod_known ; i<mod_numknown ; i++, mod++)
	{
		if (mod->needload)
			continue;

		memcpy(oldlists, mod->batches, sizeof(oldlists));
		memset(mod->batches, 0, sizeof(oldlists));
	
		for (j = 0; j < SHADER_SORT_COUNT; j++)
		{
			while((b=oldlists[j]))
			{
				oldlists[j] = b->next;
				bs = b->shader?b->shader->sort:j;

				b->next = mod->batches[bs];
				mod->batches[bs] = b;
			}
		}
	}
}
/*
===================
Mod_ClearAll
===================

called before new content is loaded.
*/
static int mod_datasequence;
void Mod_ClearAll (void)
{
#ifdef RUNTIMELIGHTING
#ifdef MULTITHREAD
	int		i;
	wantrelight = false;
	for (i = 0; i < relightthreads; i++)
	{
		Sys_WaitOnThread(relightthread[i]);
		relightthread[i] = NULL;
	}
	relightthreads = 0;
#endif
	lightmodel = NULL;
#endif

	mod_datasequence++;
}

//can be called in one of two ways.
//force=true: explicit flush. everything goes, even if its still in use.
//force=false: map change. lots of stuff is no longer in use and can be freely flushed.
//certain models cannot be safely flushed while still in use. such models will not be flushed even if forced (they may still be partially flushed).
void Mod_Purge(enum mod_purge_e ptype)
{
	int		i;
	model_t	*mod;
	qboolean unused;

	for (i=0 , mod=mod_known ; i<mod_numknown ; i++, mod++)
	{
		if (mod->needload)
			continue;

		unused = mod->datasequence != mod_datasequence;

		//this model isn't active any more.
		if (unused || ptype != MP_MAPCHANGED)
		{
			if (unused)
				Con_DPrintf("model \"%s\" no longer needed\n", mod->name);

#ifdef TERRAIN
			//we can safely flush all terrain sections at any time
			if (mod->terrain && ptype != MP_MAPCHANGED)
				Terr_PurgeTerrainModel(mod, false, true);
#endif

			//purge any vbos
			if (mod->type == mod_brush)
			{
				//brush models cannot be safely flushed.
				if (!unused && ptype != MP_RESET)
					continue;
				Surf_Clear(mod);
			}

#ifdef TERRAIN
			if (mod->type == mod_brush || mod->type == mod_heightmap)
			{
				//heightmap/terrain models cannot be safely flushed (brush models might have terrain embedded).
				if (!unused && ptype != MP_RESET)
					continue;
				Terr_FreeModel(mod);
			}
#endif

			//and obliterate anything else remaining in memory.
			ZG_FreeGroup(&mod->memgroup);
			mod->meshinfo = NULL;
			mod->needload = true;
		}
	}
}

/*
===============
Mod_Init
===============
*/
void Mod_Init (qboolean initial)
{
	if (!initial)
	{
		Mod_ClearAll();	//shouldn't be needed
		Mod_Purge(MP_RESET);//shouldn't be needed
		mod_numknown = 0;
		Q1BSP_Init();

		Cmd_AddCommand("mod_memlist", Mod_MemList_f);
		Cmd_AddCommand("mod_batchlist", Mod_BatchList_f);
		Cmd_AddCommand("mod_texturelist", Mod_TextureList_f);
		Cmd_AddCommand("mod_usetexture", Mod_BlockTextureColour_f);
	}

	if (initial)
	{
		Alias_Register();

		Mod_RegisterModelFormatMagic(NULL, "Quake1 Sprite (spr)",			IDSPRITEHEADER,							Mod_LoadSpriteModel);
#ifdef SP2MODELS
		Mod_RegisterModelFormatMagic(NULL, "Quake2 Sprite (sp2)",			IDSPRITE2HEADER,						Mod_LoadSprite2Model);
#endif

		//q2/q3bsps
#ifdef Q2BSPS
		Mod_RegisterModelFormatMagic(NULL, "Quake2/Quake2 Map (bsp)",		IDBSPHEADER,							Mod_LoadQ2BrushModel);
#endif
#ifdef Q3BSPS
		Mod_RegisterModelFormatMagic(NULL, "Raven Map (bsp)",				('R'<<0)+('B'<<8)+('S'<<16)+('P'<<24),	Mod_LoadQ2BrushModel);
		Mod_RegisterModelFormatMagic(NULL, "QFusion Map (bsp)",				('F'<<0)+('B'<<8)+('S'<<16)+('P'<<24),	Mod_LoadQ2BrushModel);
#endif

		//doom maps
#ifdef MAP_DOOM
		Mod_RegisterModelFormatMagic(NULL, "Doom IWad Map",					(('D'<<24)+('A'<<16)+('W'<<8)+'I'),		Mod_LoadDoomLevel);
		Mod_RegisterModelFormatMagic(NULL, "Doom PWad Map",					(('D'<<24)+('A'<<16)+('W'<<8)+'P'),		Mod_LoadDoomLevel);
#endif

#ifdef MAP_PROC
		Mod_RegisterModelFormatText(NULL, "Doom3 (cm)",						"CM",									D3_LoadMap_CollisionMap);
#endif

		//q1-based formats
		Mod_RegisterModelFormatMagic(NULL, "Quake1 2PSB Map(bsp)",			BSPVERSION_LONG1,						Mod_LoadBrushModel);
		Mod_RegisterModelFormatMagic(NULL, "Quake1 BSP2 Map(bsp)",			BSPVERSION_LONG2,						Mod_LoadBrushModel);
		Mod_RegisterModelFormatMagic(NULL, "Half-Life Map (bsp)",			30,										Mod_LoadBrushModel);
		Mod_RegisterModelFormatMagic(NULL, "Quake1 Map (bsp)",				29,										Mod_LoadBrushModel);
		Mod_RegisterModelFormatMagic(NULL, "Quake1 Prerelease Map (bsp)",	28,										Mod_LoadBrushModel);
	}
}

void Mod_Shutdown (qboolean final)
{
	if (final)
	{
		Mod_UnRegisterAllModelFormats(NULL);
	}
	else
	{
		Mod_ClearAll();
		Mod_Purge(MP_RESET);
		mod_numknown = 0;

		Cmd_RemoveCommand("mod_memlist");
		Cmd_RemoveCommand("mod_batchlist");
		Cmd_RemoveCommand("mod_texturelist");
		Cmd_RemoveCommand("mod_usetexture");
	}
}

/*
===============
Mod_Init

Caches the data if needed
===============
*/
void *Mod_Extradata (model_t *mod)
{
	void	*r;
	
	r = mod->meshinfo;
	if (r)
		return r;

	Mod_LoadModel (mod, true);
	
	if (!mod->meshinfo)
		Sys_Error ("Mod_Extradata: caching failed");
	return mod->meshinfo;
}

/*
===============
Mod_PointInLeaf
===============
*/
mleaf_t *Mod_PointInLeaf (model_t *model, vec3_t p)
{
	mnode_t		*node;
	float		d;
	mplane_t	*plane;
	
	if (!model)
	{		
		Sys_Error ("Mod_PointInLeaf: bad model");
	}
	if (!model->nodes)
		return NULL;
#ifdef Q2BSPS
	if (model->fromgame == fg_quake2 || model->fromgame == fg_quake3)
	{
		return model->leafs + CM_PointLeafnum(model, p);
	}
#endif
	if (model->fromgame == fg_doom)
	{
		return NULL;
	}

	node = model->nodes;
	while (1)
	{
		if (node->contents < 0)
			return (mleaf_t *)node;
		plane = node->plane;
		d = DotProduct (p,plane->normal) - plane->dist;
		if (d > 0)
			node = node->children[0];
		else
			node = node->children[1];
	}
	
	return NULL;	// never reached
}

/*
==================
Mod_FindName

==================
*/
model_t *Mod_FindName (char *name)
{
	int		i;
	model_t	*mod;
	
//	if (!name[0])
//		Sys_Error ("Mod_ForName: NULL name");
		
//
// search the currently loaded models
//
	for (i=0 , mod=mod_known ; i<mod_numknown ; i++, mod++)
		if (!strcmp (mod->name, name) )
			break;
			
	if (i == mod_numknown)
	{
		if (mod_numknown == MAX_MOD_KNOWN)
			Sys_Error ("mod_numknown == MAX_MOD_KNOWN");
		if (strlen(name) >= sizeof(mod->name))
			Sys_Error ("model name is too long: %s", name);
		memset(mod, 0, sizeof(model_t));	//clear the old model as the renderers use the same globals
		strcpy (mod->name, name);
		mod->needload = true;
		mod_numknown++;
		mod->particleeffect = -1;
		mod->particletrail = -1;
	}

	if (mod->needload == 2)
		mod->needload = true;

	//mark it as active, so it doesn't get flushed prematurely
	mod->datasequence = mod_datasequence;
	return mod;
}

/*
==================
Mod_TouchModel

==================
*/
void Mod_TouchModel (char *name)
{
	model_t	*mod;
	
	mod = Mod_FindName (name);
	
	if (!mod->needload)
	{
//		if (mod->type == mod_alias
//			|| mod->type == mod_halflife
//			)
//			Cache_Check (&mod->cache);
	}
}

static struct
{
	void *module;
	char *formatname;
	char *ident;
	unsigned int magic;
	qboolean (QDECL *load) (model_t *mod, void *buffer);
} modelloaders[64];

int Mod_RegisterModelFormatText(void *module, const char *formatname, char *magictext, qboolean (QDECL *load) (model_t *mod, void *buffer))
{
	int i, free = -1;
	for (i = 0; i < sizeof(modelloaders)/sizeof(modelloaders[0]); i++)
	{
		if (modelloaders[i].ident && !strcmp(modelloaders[i].ident, magictext))
		{
			free = i;
			break;	//extension match always replaces
		}
		else if (!modelloaders[i].load && free < 0)
			free = i;
	}
	if (free < 0)
		return 0;

	modelloaders[free].module = module;
	modelloaders[free].formatname = Z_StrDup(formatname);
	modelloaders[free].magic = 0;
	modelloaders[free].ident = Z_StrDup(magictext);
	modelloaders[free].load = load;

	return free+1;
}
int Mod_RegisterModelFormatMagic(void *module, const char *formatname, unsigned int magic, qboolean (QDECL *load) (model_t *mod, void *buffer))
{
	int i, free = -1;
	for (i = 0; i < sizeof(modelloaders)/sizeof(modelloaders[0]); i++)
	{
		if (modelloaders[i].magic && modelloaders[i].magic == magic)
		{
			free = i;
			break;	//extension match always replaces
		}
		else if (!modelloaders[i].load && free < 0)
			free = i;
	}
	if (free < 0)
		return 0;

	modelloaders[free].module = module;
	if (modelloaders[free].formatname)
		Z_Free(modelloaders[free].formatname);
	modelloaders[free].formatname = Z_StrDup(formatname);
	modelloaders[free].magic = magic;
	modelloaders[free].ident = NULL;
	modelloaders[free].load = load;

	return free+1;
}

void Mod_UnRegisterModelFormat(int idx)
{
	idx--;
	if ((unsigned int)(idx) >= sizeof(modelloaders)/sizeof(modelloaders[0]))
		return;

	Z_Free(modelloaders[idx].ident);
	modelloaders[idx].ident = NULL;
	Z_Free(modelloaders[idx].formatname);
	modelloaders[idx].formatname = NULL;
	modelloaders[idx].magic = 0;
	modelloaders[idx].load = NULL;
	modelloaders[idx].module = NULL;

	//FS_Restart will be needed
}

void Mod_UnRegisterAllModelFormats(void *module)
{
	int i;
	for (i = 0; i < sizeof(modelloaders)/sizeof(modelloaders[0]); i++)
	{
		if (modelloaders[i].module == module)
			Mod_UnRegisterModelFormat(i+1);
	}
}

/*
==================
Mod_LoadModel

Loads a model into the cache
==================
*/
model_t *Mod_LoadModel (model_t *mod, qboolean crash)
{
	unsigned *buf = NULL;
	qbyte	stackbuf[1024];		// avoid dirtying the cache heap
	char mdlbase[MAX_QPATH];
	char *replstr;
	qboolean doomsprite = false;
	unsigned int magic, i;

	char *ext;

	if (!mod->needload && mod->type != mod_dummy)
	{
		if (mod->type == mod_alias
			|| mod->type == mod_halflife
			)
		{
			if (mod->meshinfo)
				return mod;
		}
		else
			return mod;		// not cached at all
	}
	
	loadmodel = mod;

	if (!*mod->name)
	{
		mod->type = mod_dummy;
		mod->mins[0] = -16;
		mod->mins[1] = -16;
		mod->mins[2] = -16;
		mod->maxs[0] = 16;
		mod->maxs[1] = 16;
		mod->maxs[2] = 16;
		mod->needload = false;
		mod->engineflags = 0;
		P_LoadedModel(mod);
		return mod;
	}
	
#ifdef RAGDOLL
	if (mod->dollinfo)
	{
		rag_freedoll(mod->dollinfo);
		mod->dollinfo = NULL;
	}
#endif

	if (mod->needload == 2)
		return mod;

//
// load the file
//
	// set necessary engine flags for loading purposes
	if (!strcmp(mod->name, "progs/player.mdl"))
		mod->engineflags |= MDLF_PLAYER | MDLF_DOCRC;
	else if (!strcmp(mod->name, "progs/flame.mdl") || 
		!strcmp(mod->name, "progs/flame2.mdl") ||
		!strcmp(mod->name, "models/flame1.mdl") ||	//hexen2 small standing flame
		!strcmp(mod->name, "models/flame2.mdl") ||	//hexen2 large standing flame
		!strcmp(mod->name, "models/cflmtrch.mdl"))	//hexen2 wall torch
		mod->engineflags |= MDLF_FLAME;
	else if (!strcmp(mod->name, "progs/bolt.mdl") ||
		!strcmp(mod->name, "progs/bolt2.mdl") ||
		!strcmp(mod->name, "progs/bolt3.mdl") ||
		!strcmp(mod->name, "progs/beam.mdl") || 
		!strcmp(mod->name, "models/stsunsf2.mdl") || 
		!strcmp(mod->name, "models/stsunsf1.mdl") ||
		!strcmp(mod->name, "models/stice.mdl"))
		mod->engineflags |= MDLF_BOLT;
	else if (!strcmp(mod->name, "progs/backpack.mdl"))
		mod->engineflags |= MDLF_NOTREPLACEMENTS;
	else if (!strcmp(mod->name, "progs/eyes.mdl"))
		mod->engineflags |= MDLF_NOTREPLACEMENTS|MDLF_DOCRC;

	/*handle ezquake-originated cheats that would feck over fte users if fte didn't support
	these are the conditions required for r_fb_models on non-players*/
	mod->engineflags |= MDLF_EZQUAKEFBCHEAT;
	if ((mod->engineflags & MDLF_DOCRC) ||
		!strcmp(mod->name, "progs/backpack.mdl") ||
		!strcmp(mod->name, "progs/gib1.mdl") ||
		!strcmp(mod->name, "progs/gib2.mdl") ||
		!strcmp(mod->name, "progs/gib3.mdl") ||
		!strcmp(mod->name, "progs/h_player.mdl") ||
		!strncmp(mod->name, "progs/v_", 8))
		mod->engineflags &= ~MDLF_EZQUAKEFBCHEAT;

	// call the apropriate loader
	mod->needload = false;

	// get string used for replacement tokens
	ext = COM_FileExtension(mod->name);
	if (!Q_strcasecmp(ext, "spr") || !Q_strcasecmp(ext, "sp2"))
		replstr = ""; // sprite
	else if (!Q_strcasecmp(ext, "dsp")) // doom sprite
	{
		replstr = "";
		doomsprite = true;
	}
	else // assume models
		replstr = r_replacemodels.string;

	// gl_load24bit 0 disables all replacements
	if (!gl_load24bit.value)
		replstr = "";

	COM_StripExtension(mod->name, mdlbase, sizeof(mdlbase));

	while (replstr)
	{
		replstr = COM_ParseStringSet(replstr);

		if (replstr)
		{
			TRACE(("Mod_LoadModel: Trying to load (replacement) model \"%s.%s\"\n", mdlbase, com_token));
			buf = (unsigned *)COM_LoadStackFile (va("%s.%s", mdlbase, com_token), stackbuf, sizeof(stackbuf));
		}
		else
		{
			TRACE(("Mod_LoadModel: Trying to load model \"%s\"\n", mod->name));
			buf = (unsigned *)COM_LoadStackFile (mod->name, stackbuf, sizeof(stackbuf));
			if (!buf)
			{
#ifdef DOOMWADS
				if (doomsprite) // special case needed for doom sprites
				{
					mod->needload = false;
					TRACE(("Mod_LoadModel: doomsprite: \"%s\"\n", mod->name));
					Mod_LoadDoomSprite(mod);
					return mod;
				}
#endif
				break; // failed to load unreplaced file and nothing left
			}
		}
		if (!buf)
			continue;
	
//
// allocate a new model
//
		COM_FileBase (mod->name, loadname, sizeof(loadname));

//
// fill it in
//
		Mod_DoCRC(mod, (char*)buf, com_filesize);

		magic = LittleLong(*(unsigned *)buf);
		for(i = 0; i < sizeof(modelloaders) / sizeof(modelloaders[0]); i++)
		{
			if (modelloaders[i].load && modelloaders[i].magic == magic && !modelloaders[i].ident)
				break;
		}
		if (i < sizeof(modelloaders) / sizeof(modelloaders[0]))
		{
			if (!modelloaders[i].load(mod, buf))
				continue;
			if (mod->type == mod_brush)
				Surf_BuildModelLightmaps(mod);
		}
		else
		{
			COM_Parse((char*)buf);
			for(i = 0; i < sizeof(modelloaders) / sizeof(modelloaders[0]); i++)
			{
				if (modelloaders[i].load && modelloaders[i].ident && !strcmp(modelloaders[i].ident, com_token))
					break;
			}
			if (i < sizeof(modelloaders) / sizeof(modelloaders[0]))
			{
				if (!modelloaders[i].load(mod, buf))
					continue;
			}
			else
			{
				Con_Printf(CON_WARNING "Unrecognised model format 0x%x (%c%c%c%c)\n", LittleLong(*(unsigned *)buf), ((char*)buf)[0], ((char*)buf)[1], ((char*)buf)[2], ((char*)buf)[3]);
				continue;
			}
		}

/*
#ifdef MAP_PROC
			if (!strcmp(com_token, "CM"))	//doom3 map.
			{
				TRACE(("Mod_LoadModel: doom3 CM\n"));
				if (!D3_LoadMap_CollisionMap (mod, (char*)buf))
					continue;
				break;
			}
#endif
*/

		P_LoadedModel(mod);
		Validation_IncludeFile(mod->name, (char *)buf, com_filesize);

		TRACE(("Mod_LoadModel: Loaded\n"));

#ifdef RAGDOLL
		{
			int numbones = Mod_GetNumBones(mod, false);
			if (numbones)
			{
				char *dollname = va("%s.doll", mod->name);
				buf = (unsigned *)COM_LoadStackFile (dollname, stackbuf, sizeof(stackbuf));
				if (buf)
					mod->dollinfo = rag_createdollfromstring(mod, dollname, numbones, (char*)buf);
			}
		}
#endif

		return mod;
	}

	if (crash)
		Host_EndGame ("Mod_NumForName: %s not found or couldn't load", mod->name);

	if (*mod->name != '*' && strcmp(mod->name, "null"))
		Con_Printf(CON_ERROR "Unable to load or replace %s\n", mod->name);
	mod->type = mod_dummy;
	mod->mins[0] = -16;
	mod->mins[1] = -16;
	mod->mins[2] = -16;
	mod->maxs[0] = 16;
	mod->maxs[1] = 16;
	mod->maxs[2] = 16;
	mod->needload = 2;
	mod->engineflags = 0;
	P_LoadedModel(mod);
	return mod;
}

/*
==================
Mod_ForName

Loads in a model for the given name
==================
*/
model_t *Mod_ForName (char *name, qboolean crash)
{
	model_t	*mod;
	
	mod = Mod_FindName (name);
	
	return Mod_LoadModel (mod, crash);
}


/*
===============================================================================

					BRUSHMODEL LOADING

===============================================================================
*/

qbyte	*mod_base;

#if 0
char *advtexturedesc;
char *mapsection;
char *defaultsection;

static char *Mod_TD_LeaveSection(char *file)
{	//recursive routine to find the next }
	while(file)
	{
		file = COM_Parse(file);
		if (*com_token == '{')
			file = Mod_TD_LeaveSection(file);
		else if (*com_token == '}')
			return file;
	}
	return NULL;
}

static char *Mod_TD_Section(char *file, const char *sectionname)
{	//position within the open brace.
	while(file)
	{
		while(*file <= ' ')	//skip whitespace and new lines.
		{
			if (!*file)
				return NULL;
			file++;
		}
		file = COM_Parse(file);
		if (!stricmp(com_token, sectionname))
		{
			file = COM_Parse(file);
			if (*com_token != '{')
				return NULL;
			return file;
		}

		if (*com_token == '{')
			file = Mod_TD_LeaveSection(file);
	}
	return NULL;
}
void Mod_InitTextureDescs(char *mapname)
{
	if (advtexturedesc)
		FS_FreeFile(advtexturedesc);
	FS_LoadFile(va("maps/shaders/%s.shaders", mapname), (void**)&advtexturedesc);
	if (!advtexturedesc)
		FS_LoadFile(va("shaders/%s.shaders", mapname), (void**)&advtexturedesc);
	if (advtexturedesc)
	{
		mapsection = advtexturedesc;
		defaultsection = NULL;
	}
	else
	{
		FS_LoadFile(va("map.shaders", mapname), (void**)&advtexturedesc);
		mapsection = Mod_TD_Section(advtexturedesc, mapname);
		defaultsection = Mod_TD_Section(advtexturedesc, "default");
	}
}
void Mod_LoadAdvancedTextureSection(char *section, char *name, int *base, int *norm, int *luma, int *gloss, int *alphamode, qboolean *cull) //fixme: add gloss
{
	char stdname[MAX_QPATH] = "";
	char flatname[MAX_QPATH] = "";
	char bumpname[MAX_QPATH] = "";
	char normname[MAX_QPATH] = "";
	char lumaname[MAX_QPATH] = "";
	char glossname[MAX_QPATH] = "";

	section = Mod_TD_Section(section, name);

	while(section)
	{
		section = COM_Parse(section);
		if (*com_token == '}')
			break;

		while(*section <= ' ')	//get rid of nasty whitespace.
		{
			if (!*section)
				return;
			section++;
		}
		if (*section == '=')
			section++;	//evil notation.

		if (!stricmp(com_token, "texture") || !stricmp(com_token, "base"))
		{
			section = COM_Parse(section);
			Q_strncpyz(stdname, com_token, sizeof(stdname));
		}
		else if (!stricmp(com_token, "flatmap") || !stricmp(com_token, "flat")
			|| !stricmp(com_token, "diffusemap") || !stricmp(com_token, "diffuse"))
		{
			section = COM_Parse(section);
			Q_strncpyz(flatname, com_token, sizeof(flatname));
		}
		else if (!stricmp(com_token, "bumpmap") || !stricmp(com_token, "bump"))
		{
			section = COM_Parse(section);
			Q_strncpyz(bumpname, com_token, sizeof(bumpname));
		}
		else if (!stricmp(com_token, "normalmap") || !stricmp(com_token, "normal"))
		{
			section = COM_Parse(section);
			Q_strncpyz(normname, com_token, sizeof(normname));
		}
		else if (!stricmp(com_token, "glossmap") || !stricmp(com_token, "gloss"))
		{
			section = COM_Parse(section);
			Q_strncpyz(glossname, com_token, sizeof(glossname));
		}
		else if (!stricmp(com_token, "luma") || !stricmp(com_token, "glow")
			|| !stricmp(com_token, "ambient") || !stricmp(com_token, "ambientmap"))
		{
			section = COM_Parse(section);
			Q_strncpyz(lumaname, com_token, sizeof(lumaname));
		}
		else
		{
			//best thing we can do is jump to the end of the line, and hope they were a good creator...
			while(*section && *section != '\n')
				section++;
		}
	}

	//okay it's all parsed. Try and interpret the data now.

	*base = 0;
	if (norm)
		*norm = 0;
	if (luma)
		*luma = 0;
	if (gloss)
		*gloss = 0;

	if (!*stdname && !*flatname)
		return;
TRACE(("dbg: Mod_LoadAdvancedTextureSection: %s\n", name));

	if (norm && gl_bumpmappingpossible && cls.allow_bump)
	{
		*base = 0;
		*norm = 0;
		if (!*norm && *normname)
			*norm = Mod_LoadHiResTexture(normname, NULL, IF_NOALPHA|IF_NOGAMMA);
		if (!*norm && *bumpname)
			*norm = Mod_LoadBumpmapTexture(bumpname, NULL);

		if (*norm && *flatname)
			*base = Mod_LoadHiResTexture(flatname, NULL, IF_NOALPHA);
	}
	else
	{
		*base = 0;
		if (norm)
			*norm = 0;
	}
	if (!*base && *stdname)
		*base = Mod_LoadHiResTexture(stdname, NULL, IF_NOALPHA);
	if (!*base && *flatname)
		*base = Mod_LoadHiResTexture(flatname, NULL, IF_NOALPHA);
	if (luma && *lumaname)
		*luma = Mod_LoadHiResTexture(lumaname, NULL, 0);

	if (*norm && gloss && *glossname && gl_specular.value)
		*gloss = Mod_LoadHiResTexture(glossname, NULL, 0);
}

void Mod_LoadAdvancedTexture(char *name, int *base, int *norm, int *luma, int *gloss, int *alphamode, qboolean *cull)	//fixme: add gloss
{
	if (!gl_load24bit.value)
		return;

	if (mapsection)
	{
		Mod_LoadAdvancedTextureSection(mapsection, name,base,norm,luma,gloss,alphamode,cull);
		if (*base)
			return;
	}
	if (defaultsection)
		Mod_LoadAdvancedTextureSection(defaultsection, name,base,norm,luma,gloss,alphamode,cull);
}
#endif

void Mod_FinishTexture(texture_t *tx, texnums_t tn)
{
	extern cvar_t gl_shadeq1_name;
	char altname[MAX_QPATH];
	char *star;
	/*skies? just replace with the override sky*/
	if (!strncmp(tx->name, "sky", 3) && *cl.skyname)
		tx->shader = R_RegisterCustom (va("skybox_%s", cl.skyname), SUF_NONE, Shader_DefaultSkybox, NULL);	//just load the regular name.
	//find the *
	else if (!*gl_shadeq1_name.string || !strcmp(gl_shadeq1_name.string, "*"))
		tx->shader = R_RegisterCustom (tx->name, SUF_LIGHTMAP, Shader_DefaultBSPQ1, NULL);	//just load the regular name.
	else if (!(star = strchr(gl_shadeq1_name.string, '*')) || (strlen(gl_shadeq1_name.string)+strlen(tx->name)+1>=sizeof(altname)))	//it's got to fit.
		tx->shader = R_RegisterCustom (gl_shadeq1_name.string, SUF_LIGHTMAP, Shader_DefaultBSPQ1, NULL);
	else
	{
		strncpy(altname, gl_shadeq1_name.string, star-gl_shadeq1_name.string);	//copy the left
		altname[star-gl_shadeq1_name.string] = '\0';
		strcat(altname, tx->name);	//insert the *
		strcat(altname, star+1);	//add any final text.
		tx->shader = R_RegisterCustom (altname, SUF_LIGHTMAP, Shader_DefaultBSPQ1, NULL);
	}

	R_BuildDefaultTexnums(&tn, tx->shader);
}

#define LMT_DIFFUSE 1
#define LMT_FULLBRIGHT 2
#define LMT_BUMP 4
#define LMT_SPEC 8
void Mod_LoadMiptex(texture_t *tx, miptex_t *mt, texnums_t *tn, int maps)
{
	char altname[256];
	qbyte *base;
	qboolean alphaed;
	int j;
	int pixels = mt->width*mt->height/64*85;

	if (!Q_strncmp(mt->name,"sky",3))
	{
		if (maps & LMT_DIFFUSE)
			R_InitSky (tn, tx, (char *)mt + mt->offsets[0]);
	}
	else
	{
/*
		Mod_LoadAdvancedTexture(tx->name, &tn.base, &tn.bump, &tn.fullbright, &tn.specular, NULL, NULL);
		if (tn.base)
			continue;
*/

		base = (qbyte *)(mt+1);

		if (loadmodel->fromgame == fg_halflife)
		{//external textures have already been filtered.
			if (maps & LMT_DIFFUSE)
			{
				base = W_ConvertWAD3Texture(mt, &mt->width, &mt->height, &alphaed);	//convert texture to 32 bit.
				tx->alphaed = alphaed;
				tn->base = R_LoadReplacementTexture(mt->name, loadname, alphaed?0:IF_NOALPHA);
				if (!TEXVALID(tn->base))
				{
					tn->base = R_LoadReplacementTexture(mt->name, "bmodels", alphaed?0:IF_NOALPHA);
					if (base && !TEXVALID(tn->base))
						tn->base = R_LoadTexture32 (mt->name, tx->width, tx->height, (unsigned int *)base, (alphaed?0:IF_NOALPHA));
				}
				BZ_Free(base);
			}

			*tx->name = *mt->name;
		}
		else
		{
			qbyte *mipbase;
			unsigned int mipwidth, mipheight;
			extern cvar_t gl_miptexLevel;
			if ((unsigned int)gl_miptexLevel.ival < 4 && mt->offsets[gl_miptexLevel.ival])
			{
				mipbase = (qbyte*)mt + mt->offsets[gl_miptexLevel.ival];
				mipwidth = tx->width>>gl_miptexLevel.ival;
				mipheight = tx->height>>gl_miptexLevel.ival;
			}
			else
			{
				mipbase = base;
				mipwidth = tx->width;
				mipheight = tx->height;
			}

			if (maps & LMT_DIFFUSE)
			{
				tn->base = R_LoadReplacementTexture(mt->name, loadname, ((*mt->name == '{')?0:IF_NOALPHA)|IF_SUBDIRONLY|IF_MIPCAP);
				if (!TEXVALID(tn->base))
				{
					tn->base = R_LoadReplacementTexture(mt->name, "bmodels", ((*mt->name == '{')?0:IF_NOALPHA)|IF_MIPCAP);
					if (!TEXVALID(tn->base))
						tn->base = R_LoadTexture8 (mt->name, mipwidth, mipheight, mipbase, ((*mt->name == '{')?0:IF_NOALPHA)|IF_MIPCAP, 1);
				}
			}

			if (maps & LMT_FULLBRIGHT)
			{
				snprintf(altname, sizeof(altname)-1, "%s_luma", mt->name);
				if (gl_load24bit.value)
				{
					tn->fullbright = R_LoadReplacementTexture(altname, loadname, IF_NOGAMMA|IF_SUBDIRONLY|IF_MIPCAP);
					if (!TEXVALID(tn->fullbright))
						tn->fullbright = R_LoadReplacementTexture(altname, "bmodels", IF_NOGAMMA|IF_MIPCAP);
				}
				if ((*mt->name != '{') && !TEXVALID(tn->fullbright))	//generate one (if possible).
					tn->fullbright = R_LoadTextureFB(altname, mipwidth, mipheight, mipbase, IF_NOGAMMA|IF_MIPCAP);
			}
		}

		if (maps & LMT_BUMP)
		{
			snprintf(altname, sizeof(altname)-1, "%s_norm", mt->name);
			tn->bump = R_LoadReplacementTexture(altname, loadname, IF_NOGAMMA|IF_SUBDIRONLY|IF_MIPCAP);
			if (!TEXVALID(tn->bump))
				tn->bump = R_LoadReplacementTexture(altname, "bmodels", IF_NOGAMMA|IF_MIPCAP);
			if (!TEXVALID(tn->bump))
			{
				if (gl_load24bit.value)
				{
					snprintf(altname, sizeof(altname)-1, "%s_bump", mt->name);
					tn->bump = R_LoadBumpmapTexture(altname, loadname);
					if (!TEXVALID(tn->bump))
						tn->bump = R_LoadBumpmapTexture(altname, "bmodels");
				}
				else
					snprintf(altname, sizeof(altname)-1, "%s_bump", mt->name);
			}

			if (!TEXVALID(tn->bump) && loadmodel->fromgame != fg_halflife)
			{
				//no mip levels here, would be absurd.
				base = (qbyte *)(mt+1);	//convert to greyscale.
				for (j = 0; j < pixels; j++)
					base[j] = (host_basepal[base[j]*3] + host_basepal[base[j]*3+1] + host_basepal[base[j]*3+2]) / 3;

				tn->bump = R_LoadTexture8BumpPal(altname, tx->width, tx->height, base, true);	//normalise it and then bump it.
			}

			//don't do any complex quake 8bit -> glossmap. It would likly look a little ugly...
			if (maps & LMT_SPEC && gl_load24bit.value)
			{
				snprintf(altname, sizeof(altname)-1, "%s_gloss", mt->name);
				tn->specular = R_LoadHiResTexture(altname, loadname, IF_NOGAMMA|IF_SUBDIRONLY|IF_MIPCAP);
				if (!TEXVALID(tn->specular))
					tn->specular = R_LoadHiResTexture(altname, "bmodels", IF_NOGAMMA|IF_MIPCAP);
			}
		}
	}
}

/*
=================
Mod_LoadTextures
=================
*/
qboolean Mod_LoadTextures (lump_t *l)
{
	int		i, j, num, max, altmax;
	miptex_t	*mt;
	texture_t	*tx, *tx2;
	texture_t	*anims[10];
	texture_t	*altanims[10];
	dmiptexlump_t *m;
	texnums_t tn;
	int maps;

TRACE(("dbg: Mod_LoadTextures: inittexturedescs\n"));

//	Mod_InitTextureDescs(loadname);

	if (!l->filelen)
	{
		Con_Printf(CON_WARNING "warning: %s contains no texture data\n", loadmodel->name);

		loadmodel->numtextures = 1;
		loadmodel->textures = ZG_Malloc(&loadmodel->memgroup, 1 * sizeof(*loadmodel->textures));

		i = 0;
		tx = ZG_Malloc(&loadmodel->memgroup, sizeof(texture_t));
		memcpy(tx, r_notexture_mip, sizeof(texture_t));
		sprintf(tx->name, "unnamed%i", i);
		loadmodel->textures[i] = tx;

		return true;
	}
	m = (dmiptexlump_t *)(mod_base + l->fileofs);
	
	m->nummiptex = LittleLong (m->nummiptex);
	
	loadmodel->numtextures = m->nummiptex;
	loadmodel->textures = ZG_Malloc(&loadmodel->memgroup, m->nummiptex * sizeof(*loadmodel->textures));

	for (i=0 ; i<m->nummiptex ; i++)
	{
		m->dataofs[i] = LittleLong(m->dataofs[i]);
		if (m->dataofs[i] == -1)	//e1m2, this happens
		{
			tx = ZG_Malloc(&loadmodel->memgroup, sizeof(texture_t));
			memcpy(tx, r_notexture_mip, sizeof(texture_t));
			sprintf(tx->name, "unnamed%i", i);
			loadmodel->textures[i] = tx;
			continue;
		}
		mt = (miptex_t *)((qbyte *)m + m->dataofs[i]);

	TRACE(("dbg: Mod_LoadTextures: texture %s\n", loadname));

		if (!*mt->name)	//I HATE MAPPERS!
		{
			sprintf(mt->name, "unnamed%i", i);
			Con_Printf(CON_WARNING "warning: unnamed texture in %s, renaming to %s\n", loadmodel->name, mt->name);
		}

		mt->width = LittleLong (mt->width);
		mt->height = LittleLong (mt->height);
		for (j=0 ; j<MIPLEVELS ; j++)
			mt->offsets[j] = LittleLong (mt->offsets[j]);
		
		if ( (mt->width & 15) || (mt->height & 15) )
			Con_Printf (CON_WARNING "Warning: Texture %s is not 16 aligned", mt->name);
		if (mt->width < 1 || mt->height < 1)
			Con_Printf (CON_WARNING "Warning: Texture %s has no size", mt->name);
		tx = ZG_Malloc(&loadmodel->memgroup, sizeof(texture_t));
		loadmodel->textures[i] = tx;

		memcpy (tx->name, mt->name, sizeof(tx->name));
		tx->width = mt->width;
		tx->height = mt->height;

		if (!mt->offsets[0])	//this is a hl external style texture, load it a little later (from a wad)
		{
			continue;
		}

		memset(&tn, 0, sizeof(tn));

		maps = LMT_DIFFUSE;
		if (r_fb_bmodels.ival)
			maps |= LMT_FULLBRIGHT;
		if (r_loadbumpmapping)
			maps |= LMT_BUMP;
		if (gl_specular.ival)
			maps |= LMT_SPEC;

		Mod_LoadMiptex(tx, mt, &tn, maps);
		
		Mod_FinishTexture(tx, tn);

		if ((tx->shader->flags & SHADER_HASNORMALMAP) && !(maps & LMT_BUMP))
			Mod_LoadMiptex(tx, mt, &tx->shader->defaulttextures, LMT_BUMP);
	}
//
// sequence the animations
//
	for (i=0 ; i<m->nummiptex ; i++)
	{
		tx = loadmodel->textures[i];
		if (!tx || tx->name[0] != '+')
			continue;
		if (tx->anim_next)
			continue;	// already sequenced

	// find the number of frames in the animation
		memset (anims, 0, sizeof(anims));
		memset (altanims, 0, sizeof(altanims));

		max = tx->name[1];
		altmax = 0;
		if (max >= 'a' && max <= 'z')
			max -= 'a' - 'A';
		if (max >= '0' && max <= '9')
		{
			max -= '0';
			altmax = 0;
			anims[max] = tx;
			max++;
		}
		else if (max >= 'A' && max <= 'J')
		{
			altmax = max - 'A';
			max = 0;
			altanims[altmax] = tx;
			altmax++;
		}
		else
		{
			Con_Printf (CON_ERROR "Bad animating texture %s\n", tx->name);
			return false;
		}

		for (j=i+1 ; j<m->nummiptex ; j++)
		{
			tx2 = loadmodel->textures[j];
			if (!tx2 || tx2->name[0] != '+')
				continue;
			if (strcmp (tx2->name+2, tx->name+2))
				continue;

			num = tx2->name[1];
			if (num >= 'a' && num <= 'z')
				num -= 'a' - 'A';
			if (num >= '0' && num <= '9')
			{
				num -= '0';
				anims[num] = tx2;
				if (num+1 > max)
					max = num + 1;
			}
			else if (num >= 'A' && num <= 'J')
			{
				num = num - 'A';
				altanims[num] = tx2;
				if (num+1 > altmax)
					altmax = num+1;
			}
			else
			{
				Con_Printf (CON_ERROR "Bad animating texture %s\n", tx->name);
				return false;
			}
		}
		
#define	ANIM_CYCLE	2
	// link them all together
		for (j=0 ; j<max ; j++)
		{
			tx2 = anims[j];
			if (!tx2)
			{
				Con_Printf (CON_ERROR "Missing frame %i of %s\n",j, tx->name);
				return false;
			}
			tx2->anim_total = max * ANIM_CYCLE;
			tx2->anim_min = j * ANIM_CYCLE;
			tx2->anim_max = (j+1) * ANIM_CYCLE;
			tx2->anim_next = anims[ (j+1)%max ];
			if (altmax)
				tx2->alternate_anims = altanims[0];
		}
		for (j=0 ; j<altmax ; j++)
		{
			tx2 = altanims[j];
			if (!tx2)
			{
				Con_Printf (CON_ERROR "Missing frame %i of %s\n",j, tx->name);
				return false;
			}
			tx2->anim_total = altmax * ANIM_CYCLE;
			tx2->anim_min = j * ANIM_CYCLE;
			tx2->anim_max = (j+1) * ANIM_CYCLE;
			tx2->anim_next = altanims[ (j+1)%altmax ];
			if (max)
				tx2->alternate_anims = anims[0];
		}
	}

	return true;
}

void Mod_NowLoadExternal(void)
{
	int i, width, height;
	qboolean alphaed;
	texture_t	*tx;
	texnums_t tn;

	for (i=0 ; i<loadmodel->numtextures ; i++)
	{
		tx = loadmodel->textures[i];
		if (!tx)	//e1m2, this happens
			continue;

		if (tx->shader)
			continue;

		memset (&tn, 0, sizeof(tn));

		if (!TEXVALID(tn.base))
		{
			qbyte * data;

			data = W_GetTexture(tx->name, &width, &height, &alphaed);
			if (data)
			{
				tx->alphaed = alphaed;
			}

			tn.base = R_LoadHiResTexture(tx->name, loadname, IF_NOALPHA|IF_MIPCAP);
			if (!TEXVALID(tn.base))
			{
				tn.base = R_LoadHiResTexture(tx->name, "bmodels", IF_NOALPHA|IF_MIPCAP);
//				if (!TEXVALID(tn.base))
//					tn.base = R_LoadReplacementTexture("light1_4", NULL, IF_NOALPHA|IF_MIPCAP);	//a fallback. :/
			}
			BZ_Free(data);
		}
		if (!TEXVALID(tn.bump) && *tx->name != '{' && r_loadbumpmapping)
		{
			tn.bump = R_LoadBumpmapTexture(va("%s_bump", tx->name), loadname);
			if (!TEXVALID(tn.bump))
				tn.bump = R_LoadBumpmapTexture(va("%s_bump", tx->name), "bmodels");
/*			if (!TEXVALID(tn.bump))
			{
				qbyte *data;
				qbyte *heightmap;
				int width, height;
				int j;

				data = W_GetTexture(tx->name, &width, &height, &alphaed);
				if (data)
				{
					heightmap = Hunk_TempAllocMore(width*height);
					for (j = 0; j < width*height; j++)
					{
						*heightmap++ = (data[j*4+0] + data[j*4+1] + data[j*4+2])/3;
					}
					
					tn.bump = R_LoadTexture8BumpPal (va("%s_bump", tx->name), width, height, heightmap-j, true);
				}
			}
*/		}
		if (!TEXVALID(tn.base))
		{
			tn.base = R_LoadTexture8("notexture", 16, 16, r_notexture_mip+1, IF_NOALPHA, 0);
		}
		Mod_FinishTexture(tx, tn);
	}
}

qbyte lmgamma[256];
void BuildLightMapGammaTable (float g, float c)
{
	int i, inf;

//	g = bound (0.1, g, 3);
//	c = bound (1, c, 3);

	if (g == 1 && c == 1)
	{
		for (i = 0; i < 256; i++)
			lmgamma[i] = i;
		return;
	}

	for (i = 0; i < 256; i++)
	{
		inf = 255 * pow ((i + 0.5) / 255.5 * c, g) + 0.5;
		if (inf < 0)
			inf = 0;
		else if (inf > 255)
			inf = 255;		
		lmgamma[i] = inf;
	}
}

/*
=================
Mod_LoadLighting
=================
*/
void Mod_LoadLighting (lump_t *l)
{
	qboolean luxtmp = true;
	qboolean littmp = true;
	qbyte *luxdata = NULL;
	qbyte *litdata = NULL;
	qbyte *lumdata = NULL;
	qbyte *out;
	unsigned int samples;

	extern cvar_t gl_overbright;
	loadmodel->engineflags &= ~MDLF_RGBLIGHTING;

	//q3 maps have built in 4-fold overbright.
	//if we're not rendering with that, we need to brighten the lightmaps in order to keep the darker parts the same brightness. we loose the 2 upper bits. those bright areas become uniform and indistinct.
	if (loadmodel->fromgame == fg_quake3)
	{
		gl_overbright.flags |= CVAR_LATCH;
		BuildLightMapGammaTable(1, (1<<(2-gl_overbright.ival)));
	}
	else
	//lit file light intensity is made to match the world's light intensity.
//	if (cls.allow_lightmapgamma)
//		BuildLightMapGammaTable(0.6, 2);
//	else
		BuildLightMapGammaTable(1, 1);

	loadmodel->lightdata = NULL;
	loadmodel->deluxdata = NULL;
	if (loadmodel->fromgame == fg_halflife || loadmodel->fromgame == fg_quake2 || loadmodel->fromgame == fg_quake3)
	{
		litdata = mod_base + l->fileofs;
		samples = l->filelen/3;
	}
	else
	{
		lumdata = mod_base + l->fileofs;
		samples = l->filelen;
	}
	if (!samples)
		return;

	if (!luxdata && r_loadlits.ival && r_deluxemapping.ival)
	{	//the map util has a '-scalecos X' parameter. use 0 if you're going to use only just lux. without lux scalecos 0 is hideous.
		char luxname[MAX_QPATH];		
		if (!luxdata)
		{							
			strcpy(luxname, loadmodel->name);
			COM_StripExtension(loadmodel->name, luxname, sizeof(luxname));
			COM_DefaultExtension(luxname, ".lux", sizeof(luxname));
			luxdata = FS_LoadMallocGroupFile(&loadmodel->memgroup, luxname);
			luxtmp = false;
		}
		if (!luxdata)
		{
			strcpy(luxname, "luxs/");
			COM_StripExtension(COM_SkipPath(loadmodel->name), luxname+5, sizeof(luxname)-5);
			strcat(luxname, ".lux");

			luxdata = FS_LoadMallocGroupFile(&loadmodel->memgroup, luxname);
			luxtmp = false;
		}
		if (!luxdata) //dp...
		{
			COM_StripExtension(loadmodel->name, luxname, sizeof(luxname));
			COM_DefaultExtension(luxname, ".dlit", sizeof(luxname));
			luxdata = FS_LoadMallocGroupFile(&loadmodel->memgroup, luxname);
			luxtmp = false;
		}
		if (!luxdata)
		{
			int size;
			luxdata = Q1BSPX_FindLump("LIGHTINGDIR", &size);
			if (size != samples*3)
				luxdata = NULL;
			luxtmp = true;
		}
		else if (luxdata)
		{
			if (l->filelen && l->filelen != (com_filesize-8)/3)
			{
				Con_Printf("deluxmap \"%s\" doesn't match level. Ignored.\n", luxname);
				luxdata=NULL;
			}
			else if (luxdata[0] == 'Q' && luxdata[1] == 'L' && luxdata[2] == 'I' && luxdata[3] == 'T')
			{
				if (LittleLong(*(int *)&luxdata[4]) == 1)
				{
					luxdata+=8;
					loadmodel->deluxdata = luxdata;
				}
				else
				{
					Con_Printf("\"%s\" isn't a version 1 deluxmap\n", luxname);
					luxdata=NULL;
				}
			}
			else
			{
				Con_Printf("lit \"%s\" isn't a deluxmap\n", luxname);
				luxdata=NULL;
			}
		}	
	}

	if (!litdata && r_loadlits.value)
	{
		char *litname;
		char litnamemaps[MAX_QPATH];
		char litnamelits[MAX_QPATH];
		int depthmaps;
		int depthlits;
		
		{							
			strcpy(litnamemaps, loadmodel->name);
			COM_StripExtension(loadmodel->name, litnamemaps, sizeof(litnamemaps));
			COM_DefaultExtension(litnamemaps, ".lit", sizeof(litnamemaps));
			depthmaps = COM_FDepthFile(litnamemaps, false); 
		}
		{
			strcpy(litnamelits, "lits/");
			COM_StripExtension(COM_SkipPath(loadmodel->name), litnamelits+5, sizeof(litnamelits) - 5);
			strcat(litnamelits, ".lit");
			depthlits = COM_FDepthFile(litnamelits, false);
		}

		if (depthmaps <= depthlits)
			litname = litnamemaps;	//maps has priority over lits
		else
		{
			litname = litnamelits;
		}

		litdata = FS_LoadMallocGroupFile(&loadmodel->memgroup, litname);
		littmp = false;
		if (!litdata)
		{
			int size;
			litdata = Q1BSPX_FindLump("RGBLIGHTING", &size);
			if (size != samples*3)
				litdata = NULL;
			littmp = true;
		}
		else if (litdata[0] == 'Q' && litdata[1] == 'L' && litdata[2] == 'I' && litdata[3] == 'T')
		{
			if (LittleLong(*(int *)&litdata[4]) == 1 && l->filelen && samples*3 != (com_filesize-8))
			{
				litdata = NULL;
				Con_Printf("lit \"%s\" doesn't match level. Ignored.\n", litname);
			}
			else if (LittleLong(*(int *)&litdata[4]) != 1)
			{
				Con_Printf("lit \"%s\" isn't version 1.\n", litname);
				litdata = NULL;
			}
			else if (lumdata)
			{
				float prop;
				int i;
				qbyte *lum;
				qbyte *lit;

				litdata += 8;

				//now some cheat protection.
				lum = lumdata;
				lit = litdata;

				for (i = 0; i < samples; i++)	//force it to the same intensity. (or less, depending on how you see it...)
				{
#define m(a, b, c) (a>(b>c?b:c)?a:(b>c?b:c))
					prop = (float)m(lit[0],  lit[1], lit[2]);

					if (!prop)
					{
						lit[0] = *lum;
						lit[1] = *lum;
						lit[2] = *lum;
					}
					else
					{
						prop = *lum / prop;
						lit[0] *= prop;
						lit[1] *= prop;
						lit[2] *= prop;
					}

					lum++;
					lit+=3;
				}
				//end anti-cheat
			}
		}
		else if (litdata)
		{
			Con_Printf("lit \"%s\" isn't a lit\n", litname);
			litdata = NULL;
		}
//		else
			//failed to find
	}

#ifdef RUNTIMELIGHTING
	if (r_loadlits.value == 2 && !lightmodel && (!litdata || (!luxdata && r_deluxemapping.ival)))
	{
		if (!litdata)
			writelitfile = true;
		numlightdata = l->filelen;
		lightmodel = loadmodel;
		relitsurface = 0;
	}

	/*if we're relighting, make sure there's the proper lit data to be updated*/
	if (lightmodel == loadmodel && !litdata)
	{
		int i;
		litdata = ZG_Malloc(&loadmodel->memgroup, samples*3);
		littmp = false;
		if (lumdata)
		{
			for (i = 0; i < samples; i++)
			{
				litdata[i*3+0] = lumdata[i];
				litdata[i*3+1] = lumdata[i];
				litdata[i*3+2] = lumdata[i];
			}
			lumdata = NULL;
		}
	}
	/*if we're relighting, make sure there's the proper lux data to be updated*/
	if (lightmodel == loadmodel && r_deluxemapping.ival && !luxdata)
	{
		int i;
		luxdata = ZG_Malloc(&loadmodel->memgroup, samples*3);
		for (i = 0; i < samples; i++)
		{
			luxdata[i*3+0] = 0.5f*255;
			luxdata[i*3+1] = 0.5f*255;
			luxdata[i*3+2] = 255;
		}
	}
#endif
	
	if (luxdata && luxtmp)
	{
		loadmodel->engineflags |= MDLF_RGBLIGHTING;
		loadmodel->deluxdata = ZG_Malloc(&loadmodel->memgroup, samples*3);
		memcpy(loadmodel->deluxdata, luxdata, samples*3);
	}
	else if (luxdata)
	{
		loadmodel->deluxdata = luxdata;
	}

	if (litdata && littmp)
	{
		loadmodel->engineflags |= MDLF_RGBLIGHTING;
		loadmodel->lightdata = ZG_Malloc(&loadmodel->memgroup, samples*3);
		/*the memcpy is below*/
		samples*=3;
	}
	else if (litdata)
	{
		loadmodel->engineflags |= MDLF_RGBLIGHTING;
		loadmodel->lightdata = litdata;
		samples*=3;
	}
	else if (lumdata)
	{
		loadmodel->engineflags &= ~MDLF_RGBLIGHTING;
		loadmodel->lightdata = ZG_Malloc(&loadmodel->memgroup, samples);
		litdata = lumdata;
	}

	/*apply lightmap gamma to the entire lightmap*/
	out = loadmodel->lightdata;
	while(samples-- > 0)
	{
		*out++ = lmgamma[*litdata++];
	}

	if ((loadmodel->engineflags & MDLF_RGBLIGHTING) && r_lightmap_saturation.value != 1.0f)
		SaturateR8G8B8(loadmodel->lightdata, l->filelen, r_lightmap_saturation.value);
}

/*
=================
Mod_LoadVisibility
=================
*/
void Mod_LoadVisibility (lump_t *l)
{
	if (!l->filelen)
	{
		loadmodel->visdata = NULL;
		return;
	}
	loadmodel->visdata = ZG_Malloc(&loadmodel->memgroup, l->filelen);	
	memcpy (loadmodel->visdata, mod_base + l->fileofs, l->filelen);
}


/*
=================
Mod_LoadEntities
=================
*/
void Mod_LoadEntities (lump_t *l)
{
	if (!l->filelen)
	{
		loadmodel->entities = NULL;
		return;
	}
	loadmodel->entities = ZG_Malloc(&loadmodel->memgroup, l->filelen + 1);	
	memcpy (loadmodel->entities, mod_base + l->fileofs, l->filelen);
	loadmodel->entities[l->filelen] = 0;
}


/*
=================
Mod_LoadVertexes
=================
*/
qboolean Mod_LoadVertexes (lump_t *l)
{
	dvertex_t	*in;
	mvertex_t	*out;
	int			i, count;

	in = (void *)(mod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size in %s\n", loadmodel->name);
		return false;
	}
	count = l->filelen / sizeof(*in);
	out = ZG_Malloc(&loadmodel->memgroup, count*sizeof(*out));	

	loadmodel->vertexes = out;
	loadmodel->numvertexes = count;

	for ( i=0 ; i<count ; i++, in++, out++)
	{
		out->position[0] = LittleFloat (in->point[0]);
		out->position[1] = LittleFloat (in->point[1]);
		out->position[2] = LittleFloat (in->point[2]);
	}

	return true;
}

/*
=================
Mod_LoadSubmodels
=================
*/
static qboolean hexen2map;
qboolean Mod_LoadSubmodels (lump_t *l)
{
	dq1model_t	*inq;
	dh2model_t	*inh;
	mmodel_t	*out;
	int			i, j, count;

	//this is crazy!

	inq = (void *)(mod_base + l->fileofs);
	inh = (void *)(mod_base + l->fileofs);
	if (!inq->numfaces)
	{
		hexen2map = true;
		if (l->filelen % sizeof(*inh))
		{
			Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size in %s\n",loadmodel->name);
			return false;
		}
		count = l->filelen / sizeof(*inh);
		out = ZG_Malloc(&loadmodel->memgroup, count*sizeof(*out));

		loadmodel->submodels = out;
		loadmodel->numsubmodels = count;

		for ( i=0 ; i<count ; i++, inh++, out++)
		{
			for (j=0 ; j<3 ; j++)
			{	// spread the mins / maxs by a pixel
				out->mins[j] = LittleFloat (inh->mins[j]) - 1;
				out->maxs[j] = LittleFloat (inh->maxs[j]) + 1;
				out->origin[j] = LittleFloat (inh->origin[j]);
			}
			for (j=0 ; j<MAX_MAP_HULLSDH2 ; j++)
			{
				out->headnode[j] = LittleLong (inh->headnode[j]);
			}
			for ( ; j<MAX_MAP_HULLSM ; j++)
				out->headnode[j] = 0;
			for (j=0 ; j<MAX_MAP_HULLSDH2 ; j++)
				out->hullavailable[j] = true;
			for ( ; j<MAX_MAP_HULLSM ; j++)
				out->hullavailable[j] = false;
			out->visleafs = LittleLong (inh->visleafs);
			out->firstface = LittleLong (inh->firstface);
			out->numfaces = LittleLong (inh->numfaces);
		}

	}
	else
	{
		hexen2map = false;
		if (l->filelen % sizeof(*inq))
		{
			Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size in %s\n",loadmodel->name);
			return false;
		}
		count = l->filelen / sizeof(*inq);
		out = ZG_Malloc(&loadmodel->memgroup, count*sizeof(*out));	

		loadmodel->submodels = out;
		loadmodel->numsubmodels = count;

		for ( i=0 ; i<count ; i++, inq++, out++)
		{
			for (j=0 ; j<3 ; j++)
			{	// spread the mins / maxs by a pixel
				out->mins[j] = LittleFloat (inq->mins[j]) - 1;
				out->maxs[j] = LittleFloat (inq->maxs[j]) + 1;
				out->origin[j] = LittleFloat (inq->origin[j]);
			}
			for (j=0 ; j<MAX_MAP_HULLSDQ1 ; j++)
			{
				out->headnode[j] = LittleLong (inq->headnode[j]);
			}
			for ( ; j<MAX_MAP_HULLSM ; j++)
				out->headnode[j] = 0;
			for (j=0 ; j<3 ; j++)
				out->hullavailable[j] = true;
			for ( ; j<MAX_MAP_HULLSM ; j++)
				out->hullavailable[j] = false;
			out->visleafs = LittleLong (inq->visleafs);
			out->firstface = LittleLong (inq->firstface);
			out->numfaces = LittleLong (inq->numfaces);
		}
	}

	return true;
}

/*
=================
Mod_LoadEdges
=================
*/
qboolean Mod_LoadEdges (lump_t *l, qboolean lm)
{
	medge_t *out;
	int 	i, count;
	
	if (lm)
	{
		dledge_t *in = (void *)(mod_base + l->fileofs);
		if (l->filelen % sizeof(*in))
		{
			Con_Printf ("MOD_LoadBmodel: funny lump size in %s\n", loadmodel->name);
			return false;
		}
		count = l->filelen / sizeof(*in);
		out = ZG_Malloc(&loadmodel->memgroup, (count + 1) * sizeof(*out));	

		loadmodel->edges = out;
		loadmodel->numedges = count;

		for ( i=0 ; i<count ; i++, in++, out++)
		{
			out->v[0] = LittleLong(in->v[0]);
			out->v[1] = LittleLong(in->v[1]);
		}
	}
	else
	{
		dsedge_t *in = (void *)(mod_base + l->fileofs);
		if (l->filelen % sizeof(*in))
		{
			Con_Printf ("MOD_LoadBmodel: funny lump size in %s\n", loadmodel->name);
			return false;
		}
		count = l->filelen / sizeof(*in);
		out = ZG_Malloc(&loadmodel->memgroup, (count + 1) * sizeof(*out));

		loadmodel->edges = out;
		loadmodel->numedges = count;

		for ( i=0 ; i<count ; i++, in++, out++)
		{
			out->v[0] = (unsigned short)LittleShort(in->v[0]);
			out->v[1] = (unsigned short)LittleShort(in->v[1]);
		}
	}

	return true;
}

/*
=================
Mod_LoadTexinfo
=================
*/
qboolean Mod_LoadTexinfo (lump_t *l)
{
	texinfo_t *in;
	mtexinfo_t *out;
	int 	i, j, count;
	int		miptex;
	float	len1, len2;

	in = (void *)(mod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size in %s\n",loadmodel->name);
		return false;
	}
	count = l->filelen / sizeof(*in);
	out = ZG_Malloc(&loadmodel->memgroup, count*sizeof(*out));

	loadmodel->texinfo = out;
	loadmodel->numtexinfo = count;

	for ( i=0 ; i<count ; i++, in++, out++)
	{
		for (j=0 ; j<4 ; j++)
		{
			out->vecs[0][j] = LittleFloat (in->vecs[0][j]);
			out->vecs[1][j] = LittleFloat (in->vecs[1][j]);
		}
		len1 = Length (out->vecs[0]);
		len2 = Length (out->vecs[1]);
		len1 = (len1 + len2)/2;
		if (len1 < 0.32)
			out->mipadjust = 4;
		else if (len1 < 0.49)
			out->mipadjust = 3;
		else if (len1 < 0.99)
			out->mipadjust = 2;
		else
			out->mipadjust = 1;
#if 0
		if (len1 + len2 < 0.001)
			out->mipadjust = 1;		// don't crash
		else
			out->mipadjust = 1 / floor( (len1+len2)/2 + 0.1 );
#endif

		miptex = LittleLong (in->miptex);
		out->flags = LittleLong (in->flags);
	
		if (loadmodel->numtextures)
			out->texture = loadmodel->textures[miptex % loadmodel->numtextures];
		else
			out->texture = NULL;
		if (!out->texture)
		{
			out->texture = r_notexture_mip; // texture not found
			out->flags = 0;
		}
	}

	return true;
}

/*
================
CalcSurfaceExtents

Fills in s->texturemins[] and s->extents[]
================
*/

void CalcSurfaceExtents (msurface_t *s);
/*
{
	float	mins[2], maxs[2], val;
	int		i,j, e;
	mvertex_t	*v;
	mtexinfo_t	*tex;
	int		bmins[2], bmaxs[2];

	mins[0] = mins[1] = 999999;
	maxs[0] = maxs[1] = -99999;

	tex = s->texinfo;
	
	for (i=0 ; i<s->numedges ; i++)
	{
		e = loadmodel->surfedges[s->firstedge+i];
		if (e >= 0)
			v = &loadmodel->vertexes[loadmodel->edges[e].v[0]];
		else
			v = &loadmodel->vertexes[loadmodel->edges[-e].v[1]];
		
		for (j=0 ; j<2 ; j++)
		{
			val = v->position[0] * tex->vecs[j][0] + 
				v->position[1] * tex->vecs[j][1] +
				v->position[2] * tex->vecs[j][2] +
				tex->vecs[j][3];
			if (val < mins[j])
				mins[j] = val;
			if (val > maxs[j])
				maxs[j] = val;
		}
	}

	for (i=0 ; i<2 ; i++)
	{	
		bmins[i] = floor(mins[i]/16);
		bmaxs[i] = ceil(maxs[i]/16);

		s->texturemins[i] = bmins[i];
		s->extents[i] = (bmaxs[i] - bmins[i]);

//		if ( !(tex->flags & TEX_SPECIAL) && s->extents[i] > 512 )	//q2 uses 512.
//			Sys_Error ("Bad surface extents");
	}
}
*/

/*
=================
Mod_LoadFaces
=================
*/
qboolean Mod_LoadFaces (lump_t *l, qboolean lm, mesh_t **meshlist)
{
	dsface_t		*ins;
	dlface_t		*inl;
	msurface_t 	*out;
	int			count, surfnum;
	int			i, planenum, side;
	int tn, lofs;

	if (lm)
	{
		ins = NULL;
		inl = (void *)(mod_base + l->fileofs);
		if (l->filelen % sizeof(*inl))
		{
			Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size in %s\n",loadmodel->name);
			return false;
		}
		count = l->filelen / sizeof(*inl);
	}
	else
	{
		ins = (void *)(mod_base + l->fileofs);
		inl = NULL;
		if (l->filelen % sizeof(*ins))
		{
			Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size in %s\n",loadmodel->name);
			return false;
		}
		count = l->filelen / sizeof(*ins);
	}
	out = ZG_Malloc(&loadmodel->memgroup, count*sizeof(*out));

	*meshlist = ZG_Malloc(&loadmodel->memgroup, count*sizeof(**meshlist));
	loadmodel->surfaces = out;
	loadmodel->numsurfaces = count;
	for ( surfnum=0 ; surfnum<count ; surfnum++, out++)
	{
		if (lm)
		{
			planenum = LittleLong(inl->planenum);
			side = LittleLong(inl->side);
			out->firstedge = LittleLong(inl->firstedge);
			out->numedges = LittleLong(inl->numedges);
			tn = LittleLong (inl->texinfo);
			for (i=0 ; i<MAXRLIGHTMAPS ; i++)
				out->styles[i] = inl->styles[i];
			lofs = LittleLong(inl->lightofs);
			inl++;
		}
		else
		{
			planenum = LittleShort(ins->planenum);
			side = LittleShort(ins->side);
			out->firstedge = LittleLong(ins->firstedge);
			out->numedges = LittleShort(ins->numedges);
			tn = LittleShort (ins->texinfo);
			for (i=0 ; i<MAXQ1LIGHTMAPS ; i++)
				out->styles[i] = ins->styles[i];
			lofs = LittleLong(ins->lightofs);
			ins++;
		}
//		(*meshlist)[surfnum].vbofirstvert = out->firstedge;
//		(*meshlist)[surfnum].numvertexes = out->numedges;
		out->flags = 0;

		if (side)
			out->flags |= SURF_PLANEBACK;			

		out->plane = loadmodel->planes + planenum;

		if (tn < 0 || tn >= loadmodel->numtexinfo)
			Host_EndGame("Hey! That map has texinfos out of bounds!\n");
		out->texinfo = loadmodel->texinfo + tn;

		CalcSurfaceExtents (out);
		if (lofs == -1)
			out->samples = NULL;
		else if ((loadmodel->engineflags & MDLF_RGBLIGHTING) && loadmodel->fromgame != fg_halflife)
			out->samples = loadmodel->lightdata + lofs*3;
		else
			out->samples = loadmodel->lightdata + lofs;

		if (!out->texinfo->texture)
			continue;

		
	// set the drawing flags flag		
		if (!Q_strncmp(out->texinfo->texture->name,"sky",3))	// sky
		{
			out->flags |= (SURF_DRAWSKY | SURF_DRAWTILED);
			continue;
		}
		
		if (!Q_strncmp(out->texinfo->texture->name,"*",1))		// turbulent
		{
			out->flags |= (SURF_DRAWTURB | SURF_DRAWTILED);
			for (i=0 ; i<2 ; i++)
			{
				out->extents[i] = 16384;
				out->texturemins[i] = -8192;
			}
			continue;
		}

		/*if (*out->texinfo->texture->name == '~')
		{
			out->texinfo->flags |= SURF_BLENDED;
			continue;
		}*/
		if (!Q_strncmp(out->texinfo->texture->name,"{",1))		// alpha
		{
			out->flags |= (SURF_DRAWALPHA);
			continue;
		}
		if (!Q_strncmp(out->texinfo->texture->name,"glass",5))		// alpha
		{
			out->flags |= (SURF_DRAWALPHA);
			continue;
		}
		if (out->flags & SURF_DRAWALPHA)
			out->flags &= ~SURF_DRAWALPHA;
	}

	return true;
}

void ModQ1_Batches_BuildQ1Q2Poly(model_t *mod, msurface_t *surf, void *cookie)
{
	int i, lindex;
	mesh_t *mesh = surf->mesh;
	medge_t *pedge;
	float *vec;
	float s, t, d;
	int sty;

	//output the mesh's indicies
	for (i=0 ; i<mesh->numvertexes-2 ; i++)
	{
		mesh->indexes[i*3] = 0;
		mesh->indexes[i*3+1] = i+1;
		mesh->indexes[i*3+2] = i+2;
	}
	//output the renderable verticies
	for (i=0 ; i<mesh->numvertexes ; i++)
	{
		lindex = mod->surfedges[surf->firstedge + i];

		if (lindex > 0)
		{
			pedge = &mod->edges[lindex];
			vec = mod->vertexes[pedge->v[0]].position;
		}
		else
		{
			pedge = &mod->edges[-lindex];
			vec = mod->vertexes[pedge->v[1]].position;
		}

		s = DotProduct (vec, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3];
		t = DotProduct (vec, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3];

		VectorCopy (vec, mesh->xyz_array[i]);
		mesh->st_array[i][0] = s/surf->texinfo->texture->width;
		mesh->st_array[i][1] = t/surf->texinfo->texture->height;

		for (sty = 0; sty < 1; sty++)
		{
			mesh->lmst_array[sty][i][0] = (s - surf->texturemins[0] + (surf->light_s[sty]*16) + 8) / (mod->lightmaps.width*16);
			mesh->lmst_array[sty][i][1] = (t - surf->texturemins[1] + (surf->light_t[sty]*16) + 8) / (mod->lightmaps.height*16);
		}

		//figure out the texture directions, for bumpmapping and stuff
		if (surf->flags & SURF_PLANEBACK)
			VectorNegate(surf->plane->normal, mesh->normals_array[i]);
		else
			VectorCopy(surf->plane->normal, mesh->normals_array[i]);
		VectorNegate(surf->texinfo->vecs[0], mesh->snormals_array[i]);
		VectorNegate(surf->texinfo->vecs[1], mesh->tnormals_array[i]);
		//the s+t vectors are axis-aligned, so fiddle them so they're normal aligned instead
		d = -DotProduct(mesh->normals_array[i], mesh->snormals_array[i]);
		VectorMA(mesh->snormals_array[i], d, mesh->normals_array[i], mesh->snormals_array[i]);
		d = -DotProduct(mesh->normals_array[i], mesh->tnormals_array[i]);
		VectorMA(mesh->tnormals_array[i], d, mesh->normals_array[i], mesh->tnormals_array[i]);
		VectorNormalize(mesh->snormals_array[i]);
		VectorNormalize(mesh->tnormals_array[i]);

		//q1bsp has no colour information (fixme: sample from the lightmap?)
		for (sty = 0; sty < 1; sty++)
		{
			mesh->colors4f_array[sty][i][0] = 1;
			mesh->colors4f_array[sty][i][1] = 1;
			mesh->colors4f_array[sty][i][2] = 1;
			mesh->colors4f_array[sty][i][3] = 1;
		}
	}
}

static void Mod_Batches_BuildModelMeshes(model_t *mod, int maxverts, int maxindicies, void (*build)(model_t *mod, msurface_t *surf, void *cookie), void *buildcookie)
{
	batch_t *batch;
	msurface_t *surf;
	mesh_t *mesh;
	int numverts = 0;
	int numindicies = 0;
	int j;
	int sortid;
	int sty;
	vbo_t vbo;
	int styles = mod->lightmaps.surfstyles;
	char *ptr;

	vbo.indicies.dummy = ZG_Malloc(&loadmodel->memgroup, sizeof(index_t) * maxindicies);
	ptr = ZG_Malloc(&loadmodel->memgroup, (sizeof(vecV_t)+sizeof(vec2_t)*(1+styles)+sizeof(vec3_t)*3+sizeof(vec4_t)*styles)* maxverts);
	vbo.coord.dummy = ptr;
	ptr += sizeof(vecV_t)*maxverts;
	for (sty = 0; sty < styles; sty++)
	{
		vbo.colours[sty].dummy = ptr;
		ptr += sizeof(vec4_t)*maxverts;
	}
	for (; sty < MAXRLIGHTMAPS; sty++)
		vbo.colours[sty].dummy = NULL;
	vbo.texcoord.dummy = ptr;
	ptr += sizeof(vec2_t)*maxverts;
	sty = 0;
	for (; sty < styles; sty++)
	{
		vbo.lmcoord[sty].dummy = ptr;
		ptr += sizeof(vec2_t)*maxverts;
	}
	for (; sty < MAXRLIGHTMAPS; sty++)
		vbo.lmcoord[sty].dummy = NULL;
	vbo.normals.dummy = ptr;
	ptr += sizeof(vec3_t)*maxverts;
	vbo.svector.dummy = ptr;
	ptr += sizeof(vec3_t)*maxverts;
	vbo.tvector.dummy = ptr;
	ptr += sizeof(vec3_t)*maxverts;

	numindicies = 0;
	numverts = 0;

	//build each mesh
	for (sortid=0; sortid<SHADER_SORT_COUNT; sortid++)
	{
		for (batch = mod->batches[sortid]; batch; batch = batch->next)
		{
			for (j = 0; j < batch->maxmeshes; j++)
			{
				surf = (msurface_t*)batch->mesh[j];
				mesh = surf->mesh;
				batch->mesh[j] = mesh;

				mesh->vbofirstvert = numverts;
				mesh->vbofirstelement = numindicies;
				numverts += mesh->numvertexes;
				numindicies += mesh->numindexes;

				//set up the arrays. the arrangement is required for the backend to optimise vbos
				mesh->xyz_array = (vecV_t*)vbo.coord.dummy + mesh->vbofirstvert;
				mesh->st_array = (vec2_t*)vbo.texcoord.dummy + mesh->vbofirstvert;
				for (sty = 0; sty < MAXRLIGHTMAPS; sty++)
				{
					if (vbo.lmcoord[sty].dummy)
						mesh->lmst_array[sty] = (vec2_t*)vbo.lmcoord[sty].dummy + mesh->vbofirstvert;
					else
						mesh->lmst_array[sty] = NULL;
					if (vbo.colours[sty].dummy)
						mesh->colors4f_array[sty] = (vec4_t*)vbo.colours[sty].dummy + mesh->vbofirstvert;
					else
						mesh->colors4f_array[sty] = NULL;
				}
				mesh->normals_array = (vec3_t*)vbo.normals.dummy + mesh->vbofirstvert;
				mesh->snormals_array = (vec3_t*)vbo.svector.dummy + mesh->vbofirstvert;
				mesh->tnormals_array = (vec3_t*)vbo.tvector.dummy + mesh->vbofirstvert;
				mesh->indexes = (index_t*)vbo.indicies.dummy + mesh->vbofirstelement;

				mesh->vbofirstvert = 0;
				mesh->vbofirstelement = 0;

				build(mod, surf, buildcookie);
			}
			batch->meshes = 0;
			batch->firstmesh = 0;
		}
	}
}

//q1 autoanimates. if the frame is set, it uses the alternate animation.
void Mod_UpdateBatchShader_Q1 (struct batch_s *batch)
{
	texture_t *base = batch->texture;
	int		reletive;
	int		count;

	if (batch->ent->framestate.g[FS_REG].frame[0])
	{
		if (base->alternate_anims)
			base = base->alternate_anims;
	}

	if (base->anim_total)
	{
		reletive = (int)(cl.time*10) % base->anim_total;

		count = 0;
		while (base->anim_min > reletive || base->anim_max <= reletive)
		{
			base = base->anim_next;
			if (!base)
				Sys_Error ("R_TextureAnimation: broken cycle");
			if (++count > 100)
				Sys_Error ("R_TextureAnimation: infinite cycle");
		}
	}

	batch->shader = base->shader;
}

//q2 has direct control over the texture frames used, but typically has the client generate the frame (different flags autogenerate different ranges).
void Mod_UpdateBatchShader_Q2 (struct batch_s *batch)
{
	texture_t *base = batch->texture;
	int		reletive;
	int frame = batch->ent->framestate.g[FS_REG].frame[0];
	if (batch->ent == &r_worldentity)
		frame = cl.time*2;

	if (base->anim_total)
	{
		reletive = frame % base->anim_total;
		while (reletive --> 0)
		{
			base = base->anim_next;
			if (!base)
				Sys_Error ("R_TextureAnimation: broken cycle");
		}
	}

	batch->shader = base->shader;
}

/*
batch->firstmesh is set only in and for this function, its cleared out elsewhere
*/
static void Mod_Batches_Generate(model_t *mod)
{
	int i;
	msurface_t *surf;
	shader_t *shader;
	int sortid;
	batch_t *batch, *lbatch = NULL;
	vec4_t plane;

	//for each surface, find a suitable batch to insert it into.
	//we use 'firstmesh' to avoid chucking out too many verts in a single vbo (gl2 hardware tends to have a 16bit limit)
	for (i=0; i<mod->nummodelsurfaces; i++)
	{
		surf = mod->surfaces + mod->firstmodelsurface + i;
		shader = surf->texinfo->texture->shader;

		if (shader)
		{
			sortid = shader->sort;

			//shaders that are portals need to be split into separate batches to have the same surface planes
			if (sortid == SHADER_SORT_PORTAL || (shader->flags & (SHADER_HASREFLECT | SHADER_HASREFRACT)))
			{
				if (surf->flags & SURF_PLANEBACK)
				{
					VectorNegate(surf->plane->normal, plane);
					plane[3] = -surf->plane->dist;
				}
				else
				{
					VectorCopy(surf->plane->normal, plane);
					plane[3] = surf->plane->dist;
				}
			}
			else
			{
				VectorClear(plane);
				plane[3] = 0;
			}
		}
		else
		{
			sortid = SHADER_SORT_OPAQUE;
			VectorClear(plane);
			plane[3] = 0;
		}

		if (lbatch && (
					lbatch->texture == surf->texinfo->texture &&
					lbatch->lightmap[0] == surf->lightmaptexturenums[0] &&
					Vector4Compare(plane, lbatch->plane) &&
					lbatch->firstmesh + surf->mesh->numvertexes <= MAX_INDICIES) &&
#if MAXRLIGHTMAPS > 1
					lbatch->lightmap[1] == surf->lightmaptexturenums[1] &&
					lbatch->lightmap[2] == surf->lightmaptexturenums[2] &&
					lbatch->lightmap[3] == surf->lightmaptexturenums[3] &&
#endif
					lbatch->fog == surf->fog)
			batch = lbatch;
		else
		{
			for (batch = mod->batches[sortid]; batch; batch = batch->next)
			{
				if (
							batch->texture == surf->texinfo->texture &&
							batch->lightmap[0] == surf->lightmaptexturenums[0] &&
							Vector4Compare(plane, batch->plane) &&
							batch->firstmesh + surf->mesh->numvertexes <= MAX_INDICIES &&
#if MAXRLIGHTMAPS > 1
							batch->lightmap[1] == surf->lightmaptexturenums[1] &&
							batch->lightmap[2] == surf->lightmaptexturenums[2] &&
							batch->lightmap[3] == surf->lightmaptexturenums[3] &&
#endif
							batch->fog == surf->fog)
					break;
			}
		}
		if (!batch)
		{
			batch = ZG_Malloc(&loadmodel->memgroup, sizeof(*batch));
			batch->lightmap[0] = surf->lightmaptexturenums[0];
#if MAXRLIGHTMAPS > 1
			batch->lightmap[1] = surf->lightmaptexturenums[1];
			batch->lightmap[2] = surf->lightmaptexturenums[2];
			batch->lightmap[3] = surf->lightmaptexturenums[3];
#endif
			batch->texture = surf->texinfo->texture;
			batch->shader = surf->texinfo->texture->shader;
			if (surf->texinfo->texture->alternate_anims || surf->texinfo->texture->anim_total)
			{
				if (mod->fromgame == fg_quake2)
					batch->buildmeshes = Mod_UpdateBatchShader_Q2;
				else
					batch->buildmeshes = Mod_UpdateBatchShader_Q1;
			}
			batch->next = mod->batches[sortid];
			batch->ent = &r_worldentity;
			batch->fog = surf->fog;
			Vector4Copy(plane, batch->plane);

			mod->batches[sortid] = batch;
		}

		surf->sbatch = batch;	//let the surface know which batch its in
		batch->maxmeshes++;
		batch->firstmesh += surf->mesh->numvertexes;

		lbatch = batch;
	}
}

typedef struct
{
	int allocated[LMBLOCK_WIDTH];
	int lmnum;
	qboolean deluxe;
} lmalloc_t;
static void Mod_LightmapAllocInit(lmalloc_t *lmallocator, qboolean hasdeluxe)
{
	memset(lmallocator, 0, sizeof(*lmallocator));
	lmallocator->deluxe = hasdeluxe;
}
static void Mod_LightmapAllocDone(lmalloc_t *lmallocator, model_t *mod)
{
	mod->lightmaps.first = 1;
	mod->lightmaps.count = lmallocator->lmnum;
	if (lmallocator->deluxe)
	{
		mod->lightmaps.first*=2;
		mod->lightmaps.count*=2;
		mod->lightmaps.deluxemapping = true;
	}
	else
		mod->lightmaps.deluxemapping = false;
}
static void Mod_LightmapAllocBlock(lmalloc_t *lmallocator, int w, int h, unsigned short *x, unsigned short *y, int *tnum)
{
	int best, best2;
	int i, j;

	if (!lmallocator->lmnum)
		lmallocator->lmnum = 1;

	for(;;)
	{
		best = LMBLOCK_HEIGHT;

		for (i = 0; i <= LMBLOCK_WIDTH - w; i++)
		{
			best2 = 0;

			for (j=0; j < w; j++)
			{
				if (lmallocator->allocated[i+j] >= best)
					break;
				if (lmallocator->allocated[i+j] > best2)
					best2 = lmallocator->allocated[i+j];
			}
			if (j == w)
			{	// this is a valid spot
				*x = i;
				*y = best = best2;
			}
		}

		if (best + h > LMBLOCK_HEIGHT)
		{
			memset(lmallocator->allocated, 0, sizeof(lmallocator->allocated));
			lmallocator->lmnum++;
			continue;
		}

		for (i=0; i < w; i++)
			lmallocator->allocated[*x + i] = best + h;

		if (lmallocator->deluxe)
			*tnum = lmallocator->lmnum*2;
		else
			*tnum = lmallocator->lmnum;
		break;
	}
}

static void Mod_LightmapAllocSurf(lmalloc_t *lmallocator, msurface_t *surf, int surfstyle)
{
	int smax, tmax;
	smax = (surf->extents[0]>>4)+1;
	tmax = (surf->extents[1]>>4)+1;

	if (isDedicated ||
		(surf->texinfo->texture->shader && !(surf->texinfo->texture->shader->flags & SHADER_HASLIGHTMAP)) || //fte
		(surf->flags & (SURF_DRAWSKY|SURF_DRAWTURB)) ||	//q1
		(surf->texinfo->flags & TEX_SPECIAL) ||	//the original 'no lightmap'
		(surf->texinfo->flags & (TI_SKY|TI_TRANS33|TI_TRANS66|TI_WARP)) ||	//q2 surfaces
		smax > LMBLOCK_WIDTH || tmax > LMBLOCK_HEIGHT || smax < 0 || tmax < 0)	//bugs/bounds/etc
	{
		surf->lightmaptexturenums[surfstyle] = -1;
		return;
	}

	Mod_LightmapAllocBlock (lmallocator, smax, tmax, &surf->light_s[surfstyle], &surf->light_t[surfstyle], &surf->lightmaptexturenums[surfstyle]);
}

static void Mod_Batches_SplitLightmaps(model_t *mod)
{
	batch_t *batch;
	batch_t *nb;
	int i, j, sortid;
	msurface_t *surf;
	int sty;


	for (sortid = 0; sortid < SHADER_SORT_COUNT; sortid++)
	for (batch = mod->batches[sortid]; batch != NULL; batch = batch->next)
	{
		surf = (msurface_t*)batch->mesh[0];
		for (sty = 0; sty < MAXRLIGHTMAPS; sty++)
		{
			batch->lightmap[sty] = surf->lightmaptexturenums[sty];
			batch->lmlightstyle[sty] = surf->styles[sty];
		}

		for (j = 1; j < batch->maxmeshes; j++)
		{
			surf = (msurface_t*)batch->mesh[j];
			for (sty = 0; sty < MAXRLIGHTMAPS; sty++)
			{
				if (surf->lightmaptexturenums[sty] != batch->lightmap[sty] ||
					//fixme: we should merge later (reverted matching) surfaces into the prior batch
					surf->styles[sty] != batch->lmlightstyle[sty] ||
					surf->vlstyles[sty] != batch->vtlightstyle[sty])
					break;
			}
			if (sty < MAXRLIGHTMAPS)
			{
				nb = ZG_Malloc(&loadmodel->memgroup, sizeof(*batch));
				*nb = *batch;
				batch->next = nb;

				nb->mesh = batch->mesh + j*2;
				nb->maxmeshes = batch->maxmeshes - j;
				batch->maxmeshes = j;
				for (sty = 0; sty < MAXRLIGHTMAPS; sty++)
				{
					nb->lightmap[sty] = surf->lightmaptexturenums[sty];
					nb->lmlightstyle[sty] = surf->styles[sty];
					nb->vtlightstyle[sty] = surf->vlstyles[sty];
				}

				memmove(nb->mesh, batch->mesh+j, sizeof(msurface_t*)*nb->maxmeshes);

				for (i = 0; i < nb->maxmeshes; i++)
				{
					surf = (msurface_t*)nb->mesh[i];
					surf->sbatch = nb;
				}

				batch = nb;
				j = 1;
			}
		}
	}
}

/*
allocates lightmaps and splits batches upon lightmap boundaries
*/
static void Mod_Batches_AllocLightmaps(model_t *mod)
{
	batch_t *batch;
	batch_t *nb;
	lmalloc_t lmallocator;
	int i, j, sortid;
	msurface_t *surf;
	int sty;

	Mod_LightmapAllocInit(&lmallocator, mod->deluxdata != NULL);

	for (sortid = 0; sortid < SHADER_SORT_COUNT; sortid++)
	for (batch = mod->batches[sortid]; batch != NULL; batch = batch->next)
	{
		surf = (msurface_t*)batch->mesh[0];
		Mod_LightmapAllocSurf (&lmallocator, surf, 0);
		for (sty = 1; sty < MAXRLIGHTMAPS; sty++)
			surf->lightmaptexturenums[sty] = -1;
		for (sty = 0; sty < MAXRLIGHTMAPS; sty++)
		{
			batch->lightmap[sty] = surf->lightmaptexturenums[sty];
			batch->lmlightstyle[sty] = 255;//don't do special backend rendering of lightstyles.
			batch->vtlightstyle[sty] = 255;//don't do special backend rendering of lightstyles.
		}

		for (j = 1; j < batch->maxmeshes; j++)
		{
			surf = (msurface_t*)batch->mesh[j];
			Mod_LightmapAllocSurf (&lmallocator, surf, 0);
			for (sty = 1; sty < MAXRLIGHTMAPS; sty++)
				surf->lightmaptexturenums[sty] = -1;
			if (surf->lightmaptexturenums[0] != batch->lightmap[0])
			{
				nb = ZG_Malloc(&loadmodel->memgroup, sizeof(*batch));
				*nb = *batch;
				batch->next = nb;

				nb->mesh = batch->mesh + j*2;
				nb->maxmeshes = batch->maxmeshes - j;
				batch->maxmeshes = j;
				for (sty = 0; sty < MAXRLIGHTMAPS; sty++)
					nb->lightmap[sty] = surf->lightmaptexturenums[sty];

				memmove(nb->mesh, batch->mesh+j, sizeof(msurface_t*)*nb->maxmeshes);

				for (i = 0; i < nb->maxmeshes; i++)
				{
					surf = (msurface_t*)nb->mesh[i];
					surf->sbatch = nb;
				}

				batch = nb;
				j = 0;
			}
		}
	}

	Mod_LightmapAllocDone(&lmallocator, mod);
}

extern void Surf_CreateSurfaceLightmap (msurface_t *surf, int shift);
//if build is NULL, uses q1/q2 surf generation, and allocates lightmaps
void Mod_Batches_Build(mesh_t *meshlist, model_t *mod, void (*build)(model_t *mod, msurface_t *surf, void *cookie), void *buildcookie)
{
	int i;
	int numverts = 0, numindicies=0;
	msurface_t *surf;
	mesh_t *mesh;
	mesh_t **bmeshes;
	int sortid;
	batch_t *batch;

	currentmodel = mod;

	if (!mod->textures)
		return;

	if (meshlist)
		meshlist += mod->firstmodelsurface;
	else if (!build)
		meshlist = ZG_Malloc(&loadmodel->memgroup, sizeof(mesh_t) * mod->nummodelsurfaces);

	for (i=0; i<mod->nummodelsurfaces; i++)
	{
		surf = mod->surfaces + i + mod->firstmodelsurface;
		if (meshlist)
		{
			mesh = surf->mesh = &meshlist[i];
			mesh->numvertexes = surf->numedges;
			mesh->numindexes = (surf->numedges-2)*3;
		}
		else
			mesh = surf->mesh;

		numverts += mesh->numvertexes;
		numindicies += mesh->numindexes;
//		surf->lightmaptexturenum = -1;
	}

	/*assign each mesh to a batch, generating as needed*/
	Mod_Batches_Generate(mod);

	bmeshes = ZG_Malloc(&loadmodel->memgroup, sizeof(*bmeshes)*mod->nummodelsurfaces*2);

	//we now know which batch each surface is in, and how many meshes there are in each batch.
	//allocate the mesh-pointer-lists for each batch. *2 for recursion.
	for (i = 0, sortid = 0; sortid < SHADER_SORT_COUNT; sortid++)
	for (batch = mod->batches[sortid]; batch != NULL; batch = batch->next)
	{
		batch->mesh = bmeshes + i;
		i += batch->maxmeshes*2;
	}
	//store the *surface* into the batch's mesh list (yes, this is an evil cast hack, but at least both are pointers)
	for (i=0; i<mod->nummodelsurfaces; i++)
	{
		surf = mod->surfaces + mod->firstmodelsurface + i;
		surf->sbatch->mesh[surf->sbatch->meshes++] = (mesh_t*)surf;
	}
	if (build)
		Mod_Batches_SplitLightmaps(mod);
	else
		Mod_Batches_AllocLightmaps(mod);

	if (!build)
	{
		build = ModQ1_Batches_BuildQ1Q2Poly;
		mod->lightmaps.surfstyles = 1;
	}
	Mod_Batches_BuildModelMeshes(mod, numverts, numindicies, build, buildcookie);

	if (BE_GenBrushModelVBO)
		BE_GenBrushModelVBO(mod);
}


/*
=================
Mod_SetParent
=================
*/
void Mod_SetParent (mnode_t *node, mnode_t *parent)
{
	if (!node)
		return;
	node->parent = parent;
	if (node->contents < 0)
		return;
	Mod_SetParent (node->children[0], node);
	Mod_SetParent (node->children[1], node);
}

/*
=================
Mod_LoadNodes
=================
*/
qboolean Mod_LoadNodes (lump_t *l, int lm)
{
	int			i, j, count, p;
	mnode_t 	*out;

	if (lm == 2)
	{
		dl2node_t		*in;
		in = (void *)(mod_base + l->fileofs);
		if (l->filelen % sizeof(*in))
		{
			Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size in %s\n",loadmodel->name);
			return false;
		}
		count = l->filelen / sizeof(*in);
		out = ZG_Malloc(&loadmodel->memgroup, count*sizeof(*out));

		loadmodel->nodes = out;
		loadmodel->numnodes = count;

		for ( i=0 ; i<count ; i++, in++, out++)
		{
			for (j=0 ; j<3 ; j++)
			{
				out->minmaxs[j] = LittleFloat (in->mins[j]);
				out->minmaxs[3+j] = LittleFloat (in->maxs[j]);
			}
		
			p = LittleLong(in->planenum);
			out->plane = loadmodel->planes + p;

			out->firstsurface = LittleLong (in->firstface);
			out->numsurfaces = LittleLong (in->numfaces);
			
			for (j=0 ; j<2 ; j++)
			{
				p = LittleLong (in->children[j]);
				if (p >= 0)
					out->children[j] = loadmodel->nodes + p;
				else
					out->children[j] = (mnode_t *)(loadmodel->leafs + (-1 - p));
			}
		}
	}
	else if (lm)
	{
		dl1node_t		*in;
		in = (void *)(mod_base + l->fileofs);
		if (l->filelen % sizeof(*in))
		{
			Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size in %s\n",loadmodel->name);
			return false;
		}
		count = l->filelen / sizeof(*in);
		out = ZG_Malloc(&loadmodel->memgroup, count*sizeof(*out));

		loadmodel->nodes = out;
		loadmodel->numnodes = count;

		for ( i=0 ; i<count ; i++, in++, out++)
		{
			for (j=0 ; j<3 ; j++)
			{
				out->minmaxs[j] = LittleShort (in->mins[j]);
				out->minmaxs[3+j] = LittleShort (in->maxs[j]);
			}
		
			p = LittleLong(in->planenum);
			out->plane = loadmodel->planes + p;

			out->firstsurface = LittleLong (in->firstface);
			out->numsurfaces = LittleLong (in->numfaces);
			
			for (j=0 ; j<2 ; j++)
			{
				p = LittleLong (in->children[j]);
				if (p >= 0)
					out->children[j] = loadmodel->nodes + p;
				else
					out->children[j] = (mnode_t *)(loadmodel->leafs + (-1 - p));
			}
		}
	}
	else
	{
		dsnode_t		*in;
		in = (void *)(mod_base + l->fileofs);
		if (l->filelen % sizeof(*in))
		{
			Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size in %s\n",loadmodel->name);
			return false;
		}
		count = l->filelen / sizeof(*in);
		out = ZG_Malloc(&loadmodel->memgroup, count*sizeof(*out));

		loadmodel->nodes = out;
		loadmodel->numnodes = count;

		for ( i=0 ; i<count ; i++, in++, out++)
		{
			for (j=0 ; j<3 ; j++)
			{
				out->minmaxs[j] = LittleShort (in->mins[j]);
				out->minmaxs[3+j] = LittleShort (in->maxs[j]);
			}
		
			p = LittleLong(in->planenum);
			out->plane = loadmodel->planes + p;

			out->firstsurface = (unsigned short)LittleShort (in->firstface);
			out->numsurfaces = (unsigned short)LittleShort (in->numfaces);
			
			for (j=0 ; j<2 ; j++)
			{
				p = LittleShort (in->children[j]);
				if (p >= 0)
					out->children[j] = loadmodel->nodes + p;
				else
					out->children[j] = (mnode_t *)(loadmodel->leafs + (-1 - p));
			}
		}
	}
	
	Mod_SetParent (loadmodel->nodes, NULL);	// sets nodes and leafs
	return true;
}

/*
=================
Mod_LoadLeafs
=================
*/
qboolean Mod_LoadLeafs (lump_t *l, int lm)
{
	mleaf_t 	*out;
	int			i, j, count, p;

	if (lm==2)
	{
		dl2leaf_t 	*in;
		in = (void *)(mod_base + l->fileofs);
		if (l->filelen % sizeof(*in))
		{
			Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size in %s\n",loadmodel->name);
			return false;
		}
		count = l->filelen / sizeof(*in);
		out = ZG_Malloc(&loadmodel->memgroup, count*sizeof(*out));

		loadmodel->leafs = out;
		loadmodel->numleafs = count;

		for ( i=0 ; i<count ; i++, in++, out++)
		{
			for (j=0 ; j<3 ; j++)
			{
				out->minmaxs[j] = LittleFloat (in->mins[j]);
				out->minmaxs[3+j] = LittleFloat (in->maxs[j]);
			}

			p = LittleLong(in->contents);
			out->contents = p;

			out->firstmarksurface = loadmodel->marksurfaces +
				LittleLong(in->firstmarksurface);
			out->nummarksurfaces = LittleLong(in->nummarksurfaces);
			
			p = LittleLong(in->visofs);
			if (p == -1)
				out->compressed_vis = NULL;
			else
				out->compressed_vis = loadmodel->visdata + p;
			
			for (j=0 ; j<4 ; j++)
				out->ambient_sound_level[j] = in->ambient_level[j];

	#ifndef CLIENTONLY
			if (!isDedicated)
	#endif
			{
				// gl underwater warp
				if (out->contents != Q1CONTENTS_EMPTY)
				{
					for (j=0 ; j<out->nummarksurfaces ; j++)
						out->firstmarksurface[j]->flags |= SURF_UNDERWATER;
				}
				if (isnotmap)
				{
					for (j=0 ; j<out->nummarksurfaces ; j++)
						out->firstmarksurface[j]->flags |= SURF_DONTWARP;
				}
			}
		}
	}
	else if (lm)
	{
		dl1leaf_t 	*in;
		in = (void *)(mod_base + l->fileofs);
		if (l->filelen % sizeof(*in))
		{
			Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size in %s\n",loadmodel->name);
			return false;
		}
		count = l->filelen / sizeof(*in);
		out = ZG_Malloc(&loadmodel->memgroup, count*sizeof(*out));

		loadmodel->leafs = out;
		loadmodel->numleafs = count;

		for ( i=0 ; i<count ; i++, in++, out++)
		{
			for (j=0 ; j<3 ; j++)
			{
				out->minmaxs[j] = LittleShort (in->mins[j]);
				out->minmaxs[3+j] = LittleShort (in->maxs[j]);
			}

			p = LittleLong(in->contents);
			out->contents = p;

			out->firstmarksurface = loadmodel->marksurfaces +
				LittleLong(in->firstmarksurface);
			out->nummarksurfaces = LittleLong(in->nummarksurfaces);
			
			p = LittleLong(in->visofs);
			if (p == -1)
				out->compressed_vis = NULL;
			else
				out->compressed_vis = loadmodel->visdata + p;
			
			for (j=0 ; j<4 ; j++)
				out->ambient_sound_level[j] = in->ambient_level[j];

	#ifndef CLIENTONLY
			if (!isDedicated)
	#endif
			{
				// gl underwater warp
				if (out->contents != Q1CONTENTS_EMPTY)
				{
					for (j=0 ; j<out->nummarksurfaces ; j++)
						out->firstmarksurface[j]->flags |= SURF_UNDERWATER;
				}
				if (isnotmap)
				{
					for (j=0 ; j<out->nummarksurfaces ; j++)
						out->firstmarksurface[j]->flags |= SURF_DONTWARP;
				}
			}
		}
	}
	else
	{
		dsleaf_t 	*in;
		in = (void *)(mod_base + l->fileofs);
		if (l->filelen % sizeof(*in))
		{
			Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size in %s\n",loadmodel->name);
			return false;
		}
		count = l->filelen / sizeof(*in);
		out = ZG_Malloc(&loadmodel->memgroup, count*sizeof(*out));

		loadmodel->leafs = out;
		loadmodel->numleafs = count;

		for ( i=0 ; i<count ; i++, in++, out++)
		{
			for (j=0 ; j<3 ; j++)
			{
				out->minmaxs[j] = LittleShort (in->mins[j]);
				out->minmaxs[3+j] = LittleShort (in->maxs[j]);
			}

			p = LittleLong(in->contents);
			out->contents = p;

			out->firstmarksurface = loadmodel->marksurfaces +
				(unsigned short)LittleShort(in->firstmarksurface);
			out->nummarksurfaces = (unsigned short)LittleShort(in->nummarksurfaces);
			
			p = LittleLong(in->visofs);
			if (p == -1)
				out->compressed_vis = NULL;
			else
				out->compressed_vis = loadmodel->visdata + p;
			
			for (j=0 ; j<4 ; j++)
				out->ambient_sound_level[j] = in->ambient_level[j];

	#ifndef CLIENTONLY
			if (!isDedicated)
	#endif
			{
				// gl underwater warp
				if (out->contents != Q1CONTENTS_EMPTY)
				{
					for (j=0 ; j<out->nummarksurfaces ; j++)
						out->firstmarksurface[j]->flags |= SURF_UNDERWATER;
				}
				if (isnotmap)
				{
					for (j=0 ; j<out->nummarksurfaces ; j++)
						out->firstmarksurface[j]->flags |= SURF_DONTWARP;
				}
			}
		}
	}

	return true;
}




//these are used to boost other info sizes
int numsuplementryplanes;
int numsuplementryclipnodes;
void *suplementryclipnodes;
void *suplementryplanes;
void *crouchhullfile;

void Mod_LoadCrouchHull(void)
{
	int i, h;
	int numsm;
	char crouchhullname[MAX_QPATH];
	int *data;
	int hulls;

//	dclipnode_t *cn;

	memset(loadmodel->hulls, 0, sizeof(loadmodel->hulls));	//ensure all the sizes are 0 (this is how we check for the existance of a hull

	numsuplementryplanes = numsuplementryclipnodes = 0;

	//find a name for a ccn and try to load it.
	strcpy(crouchhullname, loadmodel->name);
	COM_StripExtension(loadmodel->name, crouchhullname, sizeof(crouchhullname));
	COM_DefaultExtension(crouchhullname, ".crh",sizeof(crouchhullname));	//crouch hull

	FS_LoadFile(crouchhullname, &crouchhullfile);
	if (!crouchhullfile)
		return;

	data = crouchhullfile;

	if (LittleLong(*data++) != ('S') + ('C'<<8) + ('N'<<16) + ('P'<<24))	//make sure it's the right version
		return;

	if (LittleLong(*data) == 2)
	{
		data++;
		hulls = LittleLong(*data++);
	}
	else
		return;

	if (hulls > MAX_MAP_HULLSM - MAX_MAP_HULLSDQ1)
	{
		return;
	}

	numsm = LittleLong(*data++);
	if (numsm != loadmodel->numsubmodels)	//not compatible
		return;

	numsuplementryplanes = LittleLong(*data++);
	numsuplementryclipnodes = LittleLong(*data++);

	for (h = 0; h < hulls; h++)
	{
		for (i = 0; i < 3; i++)
			loadmodel->hulls[3+h].clip_mins[i] = LittleLong(*data++);
		for (i = 0; i < 3; i++)
			loadmodel->hulls[3+h].clip_maxs[i] = LittleLong(*data++);

		for (i = 0; i < numsm; i++)	//load headnode references
		{
			loadmodel->submodels[i].headnode[3+h] = LittleLong(*data)+1;
			data++;
		}
	}

	suplementryplanes = data;
	suplementryclipnodes = (qbyte*)data + sizeof(dplane_t)*numsuplementryplanes;
}

/*
=================
Mod_LoadClipnodes
=================
*/
qboolean Mod_LoadClipnodes (lump_t *l, qboolean lm)
{
	dsclipnode_t *ins;
	dlclipnode_t *inl;
	mclipnode_t *out;
	int			i, count;
	hull_t		*hull;

	if (lm)
	{
		ins = NULL;
		inl = (void *)(mod_base + l->fileofs);
		if (l->filelen % sizeof(*inl))
		{
			Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size in %s\n",loadmodel->name);
			return false;
		}
		count = l->filelen / sizeof(*inl);
	}
	else
	{
		ins = (void *)(mod_base + l->fileofs);
		inl = NULL;
		if (l->filelen % sizeof(*ins))
		{
			Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size in %s\n",loadmodel->name);
			return false;
		}
		count = l->filelen / sizeof(*ins);
	}
	out = ZG_Malloc(&loadmodel->memgroup, (count+numsuplementryclipnodes)*sizeof(*out));//space for both

	loadmodel->clipnodes = out;
	loadmodel->numclipnodes = count+numsuplementryclipnodes;


	if (hexen2map)
	{	//hexen2.
		hexen2map=false;
		hull = &loadmodel->hulls[1];
		hull->clipnodes = out;
		hull->firstclipnode = 0;
		hull->lastclipnode = count-1;
		hull->planes = loadmodel->planes;
		hull->clip_mins[0] = -16;
		hull->clip_mins[1] = -16;
		hull->clip_mins[2] = -24;
		hull->clip_maxs[0] = 16;
		hull->clip_maxs[1] = 16;
		hull->clip_maxs[2] = 32;
		hull->available = true;

		hull = &loadmodel->hulls[2];
		hull->clipnodes = out;
		hull->firstclipnode = 0;
		hull->lastclipnode = count-1;
		hull->planes = loadmodel->planes;
		hull->clip_mins[0] = -24;
		hull->clip_mins[1] = -24;
		hull->clip_mins[2] = -20;
		hull->clip_maxs[0] = 24;
		hull->clip_maxs[1] = 24;
		hull->clip_maxs[2] = 20;
		hull->available = true;

		hull = &loadmodel->hulls[3];
		hull->clipnodes = out;
		hull->firstclipnode = 0;
		hull->lastclipnode = count-1;
		hull->planes = loadmodel->planes;
		hull->clip_mins[0] = -16;
		hull->clip_mins[1] = -16;
		hull->clip_mins[2] = -12;
		hull->clip_maxs[0] = 16;
		hull->clip_maxs[1] = 16;
		hull->clip_maxs[2] = 16;
		hull->available = true;

		/*
		There is some mission-pack weirdness here
		in the missionpack, hull 4 is meant to be '-8 -8 -8' '8 8 8'
		in the original game, hull 4 is '-40 -40 -42' '40 40 42'
		*/
		hull = &loadmodel->hulls[4];
		hull->clipnodes = out;
		hull->firstclipnode = 0;
		hull->lastclipnode = count-1;
		hull->planes = loadmodel->planes;
		hull->clip_mins[0] = -8;
		hull->clip_mins[1] = -8;
		hull->clip_mins[2] = -8;
		hull->clip_maxs[0] = 8;
		hull->clip_maxs[1] = 8;
		hull->clip_maxs[2] = 8;
		hull->available = true;

		hull = &loadmodel->hulls[5];
		hull->clipnodes = out;
		hull->firstclipnode = 0;
		hull->lastclipnode = count-1;
		hull->planes = loadmodel->planes;
		hull->clip_mins[0] = -48;
		hull->clip_mins[1] = -48;
		hull->clip_mins[2] = -50;
		hull->clip_maxs[0] = 48;
		hull->clip_maxs[1] = 48;
		hull->clip_maxs[2] = 50;
		hull->available = true;

		//6 isn't used.
		//7 isn't used.
	}
	else if (loadmodel->fromgame == fg_halflife)
	{
		hull = &loadmodel->hulls[1];
		hull->clipnodes = out;
		hull->firstclipnode = 0;
		hull->lastclipnode = count-1;
		hull->planes = loadmodel->planes;
		hull->clip_mins[0] = -16;
		hull->clip_mins[1] = -16;
		hull->clip_mins[2] = -36;//-36 is correct here, but mvdsv uses -32 instead. This breaks prediction between the two
		hull->clip_maxs[0] = 16;
		hull->clip_maxs[1] = 16;
		hull->clip_maxs[2] = hull->clip_mins[2]+72;
		hull->available = true;

		hull = &loadmodel->hulls[2];
		hull->clipnodes = out;
		hull->firstclipnode = 0;
		hull->lastclipnode = count-1;
		hull->planes = loadmodel->planes;
		hull->clip_mins[0] = -32;
		hull->clip_mins[1] = -32;
		hull->clip_mins[2] = -32;
		hull->clip_maxs[0] = 32;
		hull->clip_maxs[1] = 32;
		hull->clip_maxs[2] = hull->clip_mins[2]+64;
		hull->available = true;

		hull = &loadmodel->hulls[3];
		hull->clipnodes = out;
		hull->firstclipnode = 0;
		hull->lastclipnode = count-1;
		hull->planes = loadmodel->planes;
		hull->clip_mins[0] = -16;
		hull->clip_mins[1] = -16;
		hull->clip_mins[2] = -18;
		hull->clip_maxs[0] = 16;
		hull->clip_maxs[1] = 16;
		hull->clip_maxs[2] = hull->clip_mins[2]+36;
		hull->available = true;
	}
	else
	{
		hull = &loadmodel->hulls[1];
		hull->clipnodes = out;
		hull->firstclipnode = 0;
		hull->lastclipnode = count-1;
		hull->planes = loadmodel->planes;
		hull->clip_mins[0] = -16;
		hull->clip_mins[1] = -16;
		hull->clip_mins[2] = -24;
		hull->clip_maxs[0] = 16;
		hull->clip_maxs[1] = 16;
		hull->clip_maxs[2] = 32;
		hull->available = true;

		hull = &loadmodel->hulls[2];
		hull->clipnodes = out;
		hull->firstclipnode = 0;
		hull->lastclipnode = count-1;
		hull->planes = loadmodel->planes;
		hull->clip_mins[0] = -32;
		hull->clip_mins[1] = -32;
		hull->clip_mins[2] = -24;
		hull->clip_maxs[0] = 32;
		hull->clip_maxs[1] = 32;
		hull->clip_maxs[2] = 64;
		hull->available = true;

		hull = &loadmodel->hulls[3];
		hull->clipnodes = out;
		hull->firstclipnode = 0;
		hull->lastclipnode = count-1;
		hull->planes = loadmodel->planes;
		hull->clip_mins[0] = -16;
		hull->clip_mins[1] = -16;
		hull->clip_mins[2] = -6;
		hull->clip_maxs[0] = 16;
		hull->clip_maxs[1] = 16;
		hull->clip_maxs[2] = 30;
		hull->available = false;
	}

	if (lm)
	{
		for (i=0 ; i<count ; i++, out++, inl++)
		{
			out->planenum = LittleLong(inl->planenum);
			out->children[0] = LittleLong(inl->children[0]);
			out->children[1] = LittleLong(inl->children[1]);
		}
	}
	else
	{
		for (i=0 ; i<count ; i++, out++, ins++)
		{
			out->planenum = LittleLong(ins->planenum);
			out->children[0] = LittleShort(ins->children[0]);
			out->children[1] = LittleShort(ins->children[1]);
		}
	}

	if (numsuplementryclipnodes)	//now load the crouch ones.
	{
/*This looks buggy*/
		for (i = 3; i < MAX_MAP_HULLSM; i++)
		{
			hull = &loadmodel->hulls[i];
			hull->planes = suplementryplanes;
			hull->clipnodes = out-1;
			hull->firstclipnode = 0;
			hull->lastclipnode = numsuplementryclipnodes;
			hull->available = true;
		}

		ins = suplementryclipnodes;

		for (i=0 ; i<numsuplementryclipnodes ; i++, out++, ins++)
		{
			out->planenum = LittleLong(ins->planenum);
			out->children[0] = LittleShort(ins->children[0]);
			out->children[0] += out->children[0]>=0?1:0;
			out->children[1] = LittleShort(ins->children[1]);
			out->children[1] += out->children[1]>=0?1:0;
		}
	}

	return true;
}

/*
=================
Mod_MakeHull0

Deplicate the drawing hull structure as a clipping hull
=================
*/
void Mod_MakeHull0 (void)
{
	mnode_t		*in, *child;
	mclipnode_t *out;
	int			i, j, count;
	hull_t		*hull;

	hull = &loadmodel->hulls[0];	

	in = loadmodel->nodes;
	count = loadmodel->numnodes;
	out = ZG_Malloc(&loadmodel->memgroup, count*sizeof(*out));

	hull->clipnodes = out;
	hull->firstclipnode = 0;
	hull->lastclipnode = count-1;
	hull->planes = loadmodel->planes;

	for (i=0 ; i<count ; i++, out++, in++)
	{
		out->planenum = in->plane - loadmodel->planes;
		for (j=0 ; j<2 ; j++)
		{
			child = in->children[j];
			if (child->contents < 0)
				out->children[j] = child->contents;
			else
				out->children[j] = child - loadmodel->nodes;
		}
	}
}

/*
=================
Mod_LoadMarksurfaces
=================
*/
qboolean Mod_LoadMarksurfaces (lump_t *l, qboolean lm)
{	
	int		i, j, count;
	msurface_t **out;

	if (lm)
	{
		int		*inl;
		inl = (void *)(mod_base + l->fileofs);
		if (l->filelen % sizeof(*inl))
		{
			Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size in %s\n",loadmodel->name);
			return false;
		}
		count = l->filelen / sizeof(*inl);
		out = ZG_Malloc(&loadmodel->memgroup, count*sizeof(*out));

		loadmodel->marksurfaces = out;
		loadmodel->nummarksurfaces = count;

		for ( i=0 ; i<count ; i++)
		{
			j = (unsigned int)LittleLong(inl[i]);
			if (j >= loadmodel->numsurfaces)
			{
				Con_Printf (CON_ERROR "Mod_ParseMarksurfaces: bad surface number\n");
				return false;
			}
			out[i] = loadmodel->surfaces + j;
		}
	}
	else
	{
		short		*ins;
		ins = (void *)(mod_base + l->fileofs);
		if (l->filelen % sizeof(*ins))
		{
			Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size in %s\n",loadmodel->name);
			return false;
		}
		count = l->filelen / sizeof(*ins);
		out = ZG_Malloc(&loadmodel->memgroup, count*sizeof(*out));

		loadmodel->marksurfaces = out;
		loadmodel->nummarksurfaces = count;

		for ( i=0 ; i<count ; i++)
		{
			j = (unsigned short)LittleShort(ins[i]);
			if (j >= loadmodel->numsurfaces)
			{
				Con_Printf (CON_ERROR "Mod_ParseMarksurfaces: bad surface number\n");
				return false;
			}
			out[i] = loadmodel->surfaces + j;
		}
	}

	return true;
}

/*
=================
Mod_LoadSurfedges
=================
*/
qboolean Mod_LoadSurfedges (lump_t *l)
{	
	int		i, count;
	int		*in, *out;
	
	in = (void *)(mod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size in %s\n",loadmodel->name);
		return false;
	}
	count = l->filelen / sizeof(*in);
	out = ZG_Malloc(&loadmodel->memgroup, count*sizeof(*out));

	loadmodel->surfedges = out;
	loadmodel->numsurfedges = count;

	for ( i=0 ; i<count ; i++)
		out[i] = LittleLong (in[i]);

	return true;
}


/*
=================
Mod_LoadPlanes
=================
*/
qboolean Mod_LoadPlanes (lump_t *l)
{
	int			i, j;
	mplane_t	*out;
	dplane_t 	*in;
	int			count;
	int			bits;
	
	in = (void *)(mod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size in %s\n",loadmodel->name);
		return false;
	}
	count = l->filelen / sizeof(*in);
	out = ZG_Malloc(&loadmodel->memgroup, (count+numsuplementryplanes)*2*sizeof(*out));
	
	loadmodel->planes = out;
	loadmodel->numplanes = count+numsuplementryplanes;

	for ( i=0 ; i<count ; i++, in++, out++)
	{
		bits = 0;
		for (j=0 ; j<3 ; j++)
		{
			out->normal[j] = LittleFloat (in->normal[j]);
			if (out->normal[j] < 0)
				bits |= 1<<j;
		}

		out->dist = LittleFloat (in->dist);
		out->type = LittleLong (in->type);
		out->signbits = bits;
	}

	if (numsuplementryplanes)
	{
		in = suplementryplanes;
		suplementryplanes = out;
		for ( i=0 ; i<numsuplementryplanes ; i++, in++, out++)
		{
			bits = 0;
			for (j=0 ; j<3 ; j++)
			{
				out->normal[j] = LittleFloat (in->normal[j]);
				if (out->normal[j] < 0)
					bits |= 1<<j;
			}

			out->dist = LittleFloat (in->dist);
			out->type = LittleLong (in->type);
			out->signbits = bits;
		}
	}

	return true;
}

/*
=================
RadiusFromBounds
=================
*/

float RadiusFromBounds (vec3_t mins, vec3_t maxs);
/*
{
	int		i;
	vec3_t	corner;

	for (i=0 ; i<3 ; i++)
	{
		corner[i] = fabs(mins[i]) > fabs(maxs[i]) ? fabs(mins[i]) : fabs(maxs[i]);
	}

	return Length (corner);
}
*/

//combination of R_AddDynamicLights and R_MarkLights
static void Q1BSP_StainNode (mnode_t *node, float *parms)
{
	mplane_t	*splitplane;
	float		dist;
	msurface_t	*surf;
	int			i;
	
	if (node->contents < 0)
		return;	

	splitplane = node->plane;
	dist = DotProduct ((parms+1), splitplane->normal) - splitplane->dist;
	
	if (dist > (*parms))
	{
		Q1BSP_StainNode (node->children[0], parms);
		return;
	}
	if (dist < (-*parms))
	{
		Q1BSP_StainNode (node->children[1], parms);
		return;
	}

// mark the polygons
	surf = cl.worldmodel->surfaces + node->firstsurface;
	for (i=0 ; i<node->numsurfaces ; i++, surf++)
	{
		if (surf->flags&~(SURF_DRAWALPHA|SURF_DONTWARP|SURF_PLANEBACK))
			continue;
		Surf_StainSurf(surf, parms);
	}

	Q1BSP_StainNode (node->children[0], parms);
	Q1BSP_StainNode (node->children[1], parms);
}

void Mod_FixupNodeMinsMaxs (mnode_t *node, mnode_t *parent)
{
	if (!node)
		return;

	if (node->contents >= 0)
	{
		Mod_FixupNodeMinsMaxs (node->children[0], node);
		Mod_FixupNodeMinsMaxs (node->children[1], node);
	}

	if (parent)
	{
		if (parent->minmaxs[0] > node->minmaxs[0])
			parent->minmaxs[0] = node->minmaxs[0];
		if (parent->minmaxs[1] > node->minmaxs[1])
			parent->minmaxs[1] = node->minmaxs[1];
		if (parent->minmaxs[2] > node->minmaxs[2])
			parent->minmaxs[2] = node->minmaxs[2];

		if (parent->minmaxs[3] < node->minmaxs[3])
			parent->minmaxs[3] = node->minmaxs[3];
		if (parent->minmaxs[4] < node->minmaxs[4])
			parent->minmaxs[4] = node->minmaxs[4];
		if (parent->minmaxs[5] < node->minmaxs[5])
			parent->minmaxs[5] = node->minmaxs[5];
	}

}
void Mod_FixupMinsMaxs(void)
{
	//q1 bsps are capped to +/- 32767 by the nodes/leafs
	//verts arn't though
	//so if the map is too big, let's figure out what they should be
	float *v;
	msurface_t **mark, *surf;
	mleaf_t *pleaf;
	medge_t *e, *pedges;
	int en, lindex;
	int i, c, lnumverts;
	qboolean needsfixup = false;

	if (loadmodel->mins[0] < -32768)
		needsfixup = true;
	if (loadmodel->mins[1] < -32768)
		needsfixup = true;
	if (loadmodel->mins[2] < -32768)
		needsfixup = true;

	if (loadmodel->maxs[0] > 32767)
		needsfixup = true;
	if (loadmodel->maxs[1] > 32767)
		needsfixup = true;
	if (loadmodel->maxs[2] > 32767)
		needsfixup = true;

	if (!needsfixup)
		return;

	//this is insane.
	//why am I writing this?
	//by the time the world actually gets this large, the floating point errors are going to be so immensly crazy that it's just not worth it.

	pedges = loadmodel->edges;

	for (i = 0; i < loadmodel->numleafs; i++)
	{
		pleaf = &loadmodel->leafs[i];

		mark = pleaf->firstmarksurface;
		c = pleaf->nummarksurfaces;

		if (c)
		{
			do
			{
				surf = (*mark++);

				lnumverts = surf->numedges;
				for (en=0 ; en<lnumverts ; en++)
				{
					lindex = currentmodel->surfedges[surf->firstedge + en];

					if (lindex > 0)
					{
						e = &pedges[lindex];
						v = currentmodel->vertexes[e->v[0]].position;
					}
					else
					{
						e = &pedges[-lindex];
						v = currentmodel->vertexes[e->v[1]].position;
					}

					if (pleaf->minmaxs[0] > v[0])
						pleaf->minmaxs[0] = v[0];
					if (pleaf->minmaxs[1] > v[1])
						pleaf->minmaxs[1] = v[1];
					if (pleaf->minmaxs[2] > v[2])
						pleaf->minmaxs[2] = v[2];

					if (pleaf->minmaxs[3] < v[0])
						pleaf->minmaxs[3] = v[0];
					if (pleaf->minmaxs[4] < v[1])
						pleaf->minmaxs[4] = v[1];
					if (pleaf->minmaxs[5] < v[2])
						pleaf->minmaxs[5] = v[2];

				}
			} while (--c);
		}
	}
	Mod_FixupNodeMinsMaxs (loadmodel->nodes, NULL);	// sets nodes and leafs
}

/*
=================
Mod_LoadBrushModel
=================
*/
qboolean QDECL Mod_LoadBrushModel (model_t *mod, void *buffer)
{
	int			i, j;
	dheader_t	*header;
	mmodel_t 	*bm;
	model_t *lm=mod;
	unsigned int chksum;
	qboolean noerrors;
	int longm = false;
	mesh_t *meshlist = NULL;
#if (defined(ODE_STATIC) || defined(ODE_DYNAMIC))
	qboolean ode = true;
#else
#define ode true
#endif

	loadmodel->type = mod_brush;
	
	header = (dheader_t *)buffer;

	if ((!cl.worldmodel && cls.state>=ca_connected)
#ifndef CLIENTONLY
		|| (!sv.world.worldmodel && sv.active)
#endif
		)
		isnotmap = false;
	else
		isnotmap = true;

	i = LittleLong (header->version);

	if (i == BSPVERSION || i == BSPVERSIONPREREL)
	{
		loadmodel->fromgame = fg_quake;
		loadmodel->engineflags |= MDLF_NEEDOVERBRIGHT;
	}
	else if (i == BSPVERSION_LONG1)
	{
		longm = true;
		loadmodel->fromgame = fg_quake;
		loadmodel->engineflags |= MDLF_NEEDOVERBRIGHT;
	}
	else if (i == BSPVERSION_LONG2)
	{
		longm = 2;
		loadmodel->fromgame = fg_quake;
		loadmodel->engineflags |= MDLF_NEEDOVERBRIGHT;
	}
	else if (i == BSPVERSIONHL)	//halflife support
		loadmodel->fromgame = fg_halflife;
	else
	{
		Con_Printf (CON_ERROR "Mod_LoadBrushModel: %s has wrong version number (%i should be %i)\n", mod->name, i, BSPVERSION);
		return false;
	}

	mod->lightmaps.width = LMBLOCK_WIDTH;
	mod->lightmaps.height = LMBLOCK_HEIGHT; 

// swap all the lumps
	mod_base = (qbyte *)header;

	for (i=0 ; i<sizeof(dheader_t)/4 ; i++)
		((int *)header)[i] = LittleLong ( ((int *)header)[i]);

	Q1BSPX_Setup(loadmodel, mod_base, com_filesize, header->lumps, HEADER_LUMPS);

// checksum all of the map, except for entities
	mod->checksum = 0;
	mod->checksum2 = 0;

	for (i = 0; i < HEADER_LUMPS; i++)
	{
		if ((unsigned)header->lumps[i].fileofs + (unsigned)header->lumps[i].filelen > com_filesize)
		{
			Con_Printf (CON_ERROR "Mod_LoadBrushModel: %s appears truncated\n", mod->name);
			return false;
		}
		if (i == LUMP_ENTITIES)
			continue;
		chksum = Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
		mod->checksum ^= chksum;

		if (i == LUMP_VISIBILITY || i == LUMP_LEAFS || i == LUMP_NODES)
			continue;
		mod->checksum2 ^= chksum;
	}

	if (1)//mod_ebfs.value)
	{
		char *id;
		id = (char *)(header + 1);
		if (id[0]=='P' && id[1]=='A' && id[2]=='C' && id[3]=='K')
		{	//EBFS detected.
			COM_LoadMapPackFile(mod->name, sizeof(dheader_t));
		}
	}
		
	noerrors = true;

	crouchhullfile = NULL;

	TRACE(("Loading info\n"));
#ifndef CLIENTONLY
	if (sv.state)	//if the server is running
	{
		if (!strcmp(loadmodel->name, va("maps/%s.bsp", sv.name)))
			Mod_ParseInfoFromEntityLump(loadmodel, mod_base + header->lumps[LUMP_ENTITIES].fileofs, loadname);
	}
	else
#endif
	{
		if (!cl.model_precache[1])	//not copied across yet
			Mod_ParseInfoFromEntityLump(loadmodel, mod_base + header->lumps[LUMP_ENTITIES].fileofs, loadname);
	}

// load into heap
	if (!isDedicated || ode)
	{
		TRACE(("Loading verts\n"));
		noerrors = noerrors && Mod_LoadVertexes (&header->lumps[LUMP_VERTEXES]);
		TRACE(("Loading edges\n"));
		noerrors = noerrors && Mod_LoadEdges (&header->lumps[LUMP_EDGES], longm);
		TRACE(("Loading Surfedges\n"));
		noerrors = noerrors && Mod_LoadSurfedges (&header->lumps[LUMP_SURFEDGES]);
	}
	if (!isDedicated)
	{
		TRACE(("Loading Textures\n"));
		noerrors = noerrors && Mod_LoadTextures (&header->lumps[LUMP_TEXTURES]);
		TRACE(("Loading Lighting\n"));
		if (noerrors)
			Mod_LoadLighting (&header->lumps[LUMP_LIGHTING]);	
	}
	TRACE(("Loading Submodels\n"));
	noerrors = noerrors && Mod_LoadSubmodels (&header->lumps[LUMP_MODELS]);
	if (noerrors)
	{
		TRACE(("Loading CH\n"));
		Mod_LoadCrouchHull();
	}
	TRACE(("Loading Planes\n"));
	noerrors = noerrors && Mod_LoadPlanes (&header->lumps[LUMP_PLANES]);
	if (!isDedicated || ode)
	{
		TRACE(("Loading Texinfo\n"));
		noerrors = noerrors && Mod_LoadTexinfo (&header->lumps[LUMP_TEXINFO]);
		TRACE(("Loading Faces\n"));
		noerrors = noerrors && Mod_LoadFaces (&header->lumps[LUMP_FACES], longm, &meshlist);
	}
	if (!isDedicated)
	{
		TRACE(("Loading MarkSurfaces\n"));
		noerrors = noerrors && Mod_LoadMarksurfaces (&header->lumps[LUMP_MARKSURFACES], longm);	
	}
	if (noerrors)
	{
		TRACE(("Loading Vis\n"));
		Mod_LoadVisibility (&header->lumps[LUMP_VISIBILITY]);
	}
	noerrors = noerrors && Mod_LoadLeafs (&header->lumps[LUMP_LEAFS], longm);
	TRACE(("Loading Nodes\n"));
	noerrors = noerrors && Mod_LoadNodes (&header->lumps[LUMP_NODES], longm);
	TRACE(("Loading Clipnodes\n"));
	noerrors = noerrors && Mod_LoadClipnodes (&header->lumps[LUMP_CLIPNODES], longm);
	if (noerrors)
	{
		TRACE(("Loading Entities\n"));
		Mod_LoadEntities (&header->lumps[LUMP_ENTITIES]);
		TRACE(("Loading hull 0\n"));
		Mod_MakeHull0 ();
	}

	TRACE(("sorting shaders\n"));
	if (!isDedicated && noerrors)
		Mod_SortShaders();

	if (crouchhullfile)
	{
		FS_FreeFile(crouchhullfile);
		crouchhullfile=NULL;
	}

	if (!noerrors)
	{
		return false;
	}

	TRACE(("LoadBrushModel %i\n", __LINE__));
	Q1BSP_LoadBrushes(mod);
	TRACE(("LoadBrushModel %i\n", __LINE__));
	Q1BSP_SetModelFuncs(mod);
	TRACE(("LoadBrushModel %i\n", __LINE__));
	mod->funcs.LightPointValues		= GLQ1BSP_LightPointValues;
	mod->funcs.StainNode			= Q1BSP_StainNode;
	mod->funcs.MarkLights			= Q1BSP_MarkLights;

	mod->numframes = 2;		// regular and alternate animation
	

//
// set up the submodels (FIXME: this is confusing)
//
	for (i=0 ; i<mod->numsubmodels ; i++)
	{
		bm = &mod->submodels[i];

		mod->hulls[0].firstclipnode = bm->headnode[0];
		mod->hulls[0].available = true;
		Q1BSP_CheckHullNodes(&mod->hulls[0]);

TRACE(("LoadBrushModel %i\n", __LINE__));
		for (j=1 ; j<MAX_MAP_HULLSM ; j++)
		{
			mod->hulls[j].firstclipnode = bm->headnode[j];
			mod->hulls[j].lastclipnode = mod->numclipnodes-1;

			mod->hulls[j].available &= bm->hullavailable[j];
			if (mod->hulls[j].firstclipnode > mod->hulls[j].lastclipnode)
				mod->hulls[j].available = false;

			if (mod->hulls[j].available)
				Q1BSP_CheckHullNodes(&mod->hulls[j]);
		}
		
		mod->firstmodelsurface = bm->firstface;
		mod->nummodelsurfaces = bm->numfaces;
		
		VectorCopy (bm->maxs, mod->maxs);
		VectorCopy (bm->mins, mod->mins);

		mod->radius = RadiusFromBounds (mod->mins, mod->maxs);

		mod->numleafs = bm->visleafs;

		memset(&mod->batches, 0, sizeof(mod->batches));
		mod->vbos = NULL;
		TRACE(("LoadBrushModel %i\n", __LINE__));
		if (meshlist)
		{
			Mod_Batches_Build(meshlist, mod, NULL, NULL);
		}
		TRACE(("LoadBrushModel %i\n", __LINE__));

		if (i < mod->numsubmodels-1)
		{	// duplicate the basic information
			char	name[10];

			sprintf (name, "*%i", i+1);
			loadmodel = Mod_FindName (name);
			*loadmodel = *mod;
			strcpy (loadmodel->name, name);
			mod = loadmodel;
			memset(&mod->memgroup, 0, sizeof(mod->memgroup));
		}
		TRACE(("LoadBrushModel %i\n", __LINE__));
	}
#ifdef RUNTIMELIGHTING
	TRACE(("LoadBrushModel %i\n", __LINE__));
	if (lightmodel == lm)
		LightLoadEntities(lightmodel->entities);
#endif
TRACE(("LoadBrushModel %i\n", __LINE__));
	if (1)
		Mod_FixupMinsMaxs();
TRACE(("LoadBrushModel %i\n", __LINE__));

#ifdef TERRAIN
	lm->terrain = Mod_LoadTerrainInfo(lm, loadname, false);
#endif
	return true;
}

/*
==============================================================================

ALIAS MODELS

==============================================================================
*/

//=========================================================

/*
=================
Mod_LoadSpriteFrame
=================
*/
static void * Mod_LoadSpriteFrame (void * pin, mspriteframe_t **ppframe, int framenum, int version, unsigned char *palette)
{
	dspriteframe_t		*pinframe;
	mspriteframe_t		*pspriteframe;
	int					width, height, size, origin[2];
	char				name[64];
	texid_t texnum;

	pinframe = (dspriteframe_t *)pin;

	width = LittleLong (pinframe->width);
	height = LittleLong (pinframe->height);
	size = width * height;

	pspriteframe = ZG_Malloc(&loadmodel->memgroup, sizeof (mspriteframe_t));

	Q_memset (pspriteframe, 0, sizeof (mspriteframe_t));

	*ppframe = pspriteframe;

	origin[0] = LittleLong (pinframe->origin[0]);
	origin[1] = LittleLong (pinframe->origin[1]);

	pspriteframe->up = origin[1];
	pspriteframe->down = origin[1] - height;
	pspriteframe->left = origin[0];
	pspriteframe->right = width + origin[0];

	texnum = r_nulltex;

	if (!TEXVALID(texnum))
	{	//the dp way
		Q_strncpyz(name, loadmodel->name, sizeof(name));
		Q_strncatz(name, va("_%i.tga", framenum), sizeof(name));
		texnum = R_LoadReplacementTexture(name, "sprites", 0);
	}
	if (!TEXVALID(texnum))
	{	//the older fte way.
		COM_StripExtension(loadmodel->name, name, sizeof(name));
		Q_strncatz(name, va("_%i.tga", framenum), sizeof(name));
		texnum = R_LoadReplacementTexture(name, "sprites", 0);
	}
	if (!TEXVALID(texnum))
	{	//the fuhquake way
		COM_StripExtension(COM_SkipPath(loadmodel->name), name, sizeof(name));
		Q_strncatz(name, va("_%i.tga", framenum), sizeof(name));
		texnum = R_LoadReplacementTexture(name, "sprites", 0);
	}

	if (version == SPRITE32_VERSION)
	{
		size *= 4;
		if (!TEXVALID(texnum))
			texnum = R_LoadTexture32 (name, width, height, (unsigned *)(pinframe + 1), IF_NOGAMMA|IF_CLAMP);
	}
	else if (version == SPRITEHL_VERSION)
	{
		if (!TEXVALID(texnum))
			texnum = R_LoadTexture8Pal32 (name, width, height, (qbyte *)(pinframe + 1), (qbyte*)palette, IF_NOGAMMA|IF_CLAMP);
	}
	else
	{
		if (!TEXVALID(texnum))
			texnum = R_LoadTexture8 (name, width, height, (qbyte *)(pinframe + 1), IF_NOMIPMAP|IF_NOGAMMA|IF_CLAMP, 1);
	}

	Q_strncpyz(name, loadmodel->name, sizeof(name));
	Q_strncatz(name, va("_%i.tga", framenum), sizeof(name));
	pspriteframe->shader = R_RegisterShader(name, SUF_NONE, 
			"{\n"
				"if gl_blendsprites\n"
					"program defaultsprite\n"
				"else\n"
					"program defaultsprite#MASK=1\n"
				"endif\n"
				"{\n"
					"map $diffuse\n"
					"alphafunc ge128\n"
					"depthwrite\n"
					"rgbgen vertex\n"
					"alphagen vertex\n"
				"}\n"
			"}\n"
			);
	pspriteframe->shader->defaulttextures.base = texnum;
	pspriteframe->shader->width = width;
	pspriteframe->shader->height = height;

	return (void *)((qbyte *)(pinframe+1) + size);
}


/*
=================
Mod_LoadSpriteGroup
=================
*/
static void * Mod_LoadSpriteGroup (void * pin, mspriteframe_t **ppframe, int framenum, int version, unsigned char *palette)
{
	dspritegroup_t		*pingroup;
	mspritegroup_t		*pspritegroup;
	int					i, numframes;
	dspriteinterval_t	*pin_intervals;
	float				*poutintervals;
	void				*ptemp;

	pingroup = (dspritegroup_t *)pin;

	numframes = LittleLong (pingroup->numframes);

	pspritegroup = ZG_Malloc(&loadmodel->memgroup, sizeof (mspritegroup_t) + (numframes - 1) * sizeof (pspritegroup->frames[0]));

	pspritegroup->numframes = numframes;

	*ppframe = (mspriteframe_t *)pspritegroup;

	pin_intervals = (dspriteinterval_t *)(pingroup + 1);

	poutintervals = ZG_Malloc(&loadmodel->memgroup, numframes * sizeof (float));

	pspritegroup->intervals = poutintervals;

	for (i=0 ; i<numframes ; i++)
	{
		*poutintervals = LittleFloat (pin_intervals->interval);
		if (*poutintervals <= 0.0)
		{
			Con_Printf (CON_ERROR "Mod_LoadSpriteGroup: interval<=0\n");
			return NULL;
		}

		poutintervals++;
		pin_intervals++;
	}

	ptemp = (void *)pin_intervals;

	for (i=0 ; i<numframes ; i++)
	{
		ptemp = Mod_LoadSpriteFrame (ptemp, &pspritegroup->frames[i], framenum * 100 + i, version, palette);
	}

	return ptemp;
}

/*
=================
Mod_LoadSpriteModel
=================
*/
qboolean QDECL Mod_LoadSpriteModel (model_t *mod, void *buffer)
{
	int					i;
	int					version;
	dsprite_t			*pin;
	msprite_t			*psprite;
	int					numframes;
	int					size;
	dspriteframetype_t	*pframetype;
//	int rendertype=0;
	unsigned char pal[256*4];
	int sptype;
	
	pin = (dsprite_t *)buffer;

	version = LittleLong (pin->version);
	if (version != SPRITE_VERSION)
	if (version != SPRITE32_VERSION)
	if (version != SPRITEHL_VERSION)
	{
		Con_Printf (CON_ERROR "%s has wrong version number "
				 "(%i should be %i)\n", mod->name, version, SPRITE_VERSION);
		return false;
	}

	sptype = LittleLong (pin->type);

	if (LittleLong(pin->version) == SPRITEHL_VERSION)
	{
		pin = (dsprite_t*)((char*)pin + 4);
		/*rendertype =*/ LittleLong (pin->type);	//not sure what the values mean.
	}

	numframes = LittleLong (pin->numframes);

	size = sizeof (msprite_t) +	(numframes - 1) * sizeof (psprite->frames);

	psprite = ZG_Malloc(&loadmodel->memgroup, size);

	mod->meshinfo = psprite;
	psprite->type = sptype;

	psprite->maxwidth = LittleLong (pin->width);
	psprite->maxheight = LittleLong (pin->height);
	psprite->beamlength = LittleFloat (pin->beamlength);
	mod->synctype = LittleLong (pin->synctype);
	psprite->numframes = numframes;

	mod->mins[0] = mod->mins[1] = -psprite->maxwidth/2;
	mod->maxs[0] = mod->maxs[1] = psprite->maxwidth/2;
	mod->mins[2] = -psprite->maxheight/2;
	mod->maxs[2] = psprite->maxheight/2;
	if (qrenderer == QR_NONE)
	{
		mod->type = mod_dummy;
		return true;
	}

	if (version == SPRITEHL_VERSION)
	{
		int i;
		short *numi = (short*)(pin+1);
		unsigned char *src = (unsigned char *)(numi+1);
		if (LittleShort(*numi) != 256)
		{
			Con_Printf(CON_ERROR "%s has wrong number of palette indexes (we only support 256)\n", mod->name);
			return false;
		}

		for (i = 0; i < 256; i++)
		{
			pal[i*4+0] = *src++;
			pal[i*4+1] = *src++;
			pal[i*4+2] = *src++;
			pal[i*4+3] = 255;
		}

		pframetype = (dspriteframetype_t *)(src);
	}
	else
		pframetype = (dspriteframetype_t *)(pin + 1);

//
// load the frames
//
	if (numframes < 1)
	{
		Con_Printf (CON_ERROR "Mod_LoadSpriteModel: Invalid # of frames: %d\n", numframes);
		return false;
	}

	mod->numframes = numframes;

	for (i=0 ; i<numframes ; i++)
	{
		spriteframetype_t	frametype;

		frametype = LittleLong (pframetype->type);
		psprite->frames[i].type = frametype;

		if (frametype == SPR_SINGLE)
		{
			pframetype = (dspriteframetype_t *)
					Mod_LoadSpriteFrame (pframetype + 1,
										 &psprite->frames[i].frameptr, i, version, pal);
		}
		else
		{
			pframetype = (dspriteframetype_t *)
					Mod_LoadSpriteGroup (pframetype + 1,
										 &psprite->frames[i].frameptr, i, version, pal);
		}
		if (pframetype == NULL)
		{
			return false;
		}
	}

	mod->type = mod_sprite;

	return true;
}

#ifdef SP2MODELS
qboolean QDECL Mod_LoadSprite2Model (model_t *mod, void *buffer)
{
	int					i;
	int					version;
	dmd2sprite_t		*pin;
	msprite_t			*psprite;
	int					numframes;
	int					size;
	dmd2sprframe_t		*pframetype;
	mspriteframe_t		*frame;
	int w, h;
	float origin[2];
	
	pin = (dmd2sprite_t *)buffer;

	version = LittleLong (pin->version);
	if (version != SPRITE2_VERSION)
	{
		Con_Printf (CON_ERROR "%s has wrong version number "
				 "(%i should be %i)", mod->name, version, SPRITE2_VERSION);
		return false;
	}

	numframes = LittleLong (pin->numframes);

	size = sizeof (msprite_t) +	(numframes - 1) * sizeof (psprite->frames);

	psprite = ZG_Malloc(&loadmodel->memgroup, size);

	mod->meshinfo = psprite;

	psprite->type = SPR_VP_PARALLEL;
	psprite->maxwidth = 1;
	psprite->maxheight = 1;
	psprite->beamlength = 1;
	mod->synctype = 0;
	psprite->numframes = numframes;

	mod->mins[0] = mod->mins[1] = -psprite->maxwidth/2;
	mod->maxs[0] = mod->maxs[1] = psprite->maxwidth/2;
	mod->mins[2] = -psprite->maxheight/2;
	mod->maxs[2] = psprite->maxheight/2;
	
//
// load the frames
//
	if (numframes < 1)
	{
		Con_Printf (CON_ERROR "Mod_LoadSpriteModel: Invalid # of frames: %d\n", numframes);
		return false;
	}

	mod->numframes = numframes;

	pframetype = pin->frames;

	for (i=0 ; i<numframes ; i++)
	{
		spriteframetype_t	frametype;

		frametype = SPR_SINGLE;
		psprite->frames[i].type = frametype;

		frame = psprite->frames[i].frameptr = ZG_Malloc(&loadmodel->memgroup, sizeof(mspriteframe_t));

		frame->shader = R_RegisterPic(pframetype->name);

		w = LittleLong(pframetype->width);
		h = LittleLong(pframetype->height);
		origin[0] = LittleLong (pframetype->origin_x);
		origin[1] = LittleLong (pframetype->origin_y);

		frame->down = -origin[1];
		frame->up = h - origin[1];
		frame->left = -origin[0];
		frame->right = w - origin[0];

		pframetype++;
	}

	mod->type = mod_sprite;

	return true;
}
#endif

#ifdef DOOMWADS

typedef struct {
	short width;
	short height;
	short xpos;
	short ypos;
} doomimage_t;
static int QDECL FindDoomSprites(const char *name, int size, void *param, searchpathfuncs_t *spath)
{
	if (*(int *)param + strlen(name)+1 > 16000)
		Sys_Error("Too many doom sprites\n");

	strcpy((char *)param + *(int *)param, name);
	*(int *)param += strlen(name)+1;

	return true;
}


static void LoadDoomSpriteFrame(char *imagename, mspriteframedesc_t *pdesc, int anglenum, qboolean xmirrored)
{
	int c;
	int fr;
	int rc;
	unsigned int *colpointers;
	qbyte *data;
	doomimage_t *header;

	qbyte image[256*256];
	qbyte *palette;
	qbyte *coldata;
	mspriteframe_t *pframe;

	if (!anglenum)
	{
		pdesc->type = SPR_SINGLE;
		pdesc->frameptr = pframe = ZG_Malloc(&loadmodel->memgroup, sizeof(*pframe));
	}
	else
	{
		mspritegroup_t *group;

		if (!pdesc->frameptr || pdesc->type != SPR_ANGLED)
		{
			pdesc->type = SPR_ANGLED;
			group = ZG_Malloc(&loadmodel->memgroup, sizeof(*group)+sizeof(mspriteframe_t *)*(8-1));
			pdesc->frameptr = (mspriteframe_t *)group;
			group->numframes = 8;
		}
		else
			group = (mspritegroup_t *)pdesc->frameptr;

		pframe = ZG_Malloc(&loadmodel->memgroup, sizeof(*pframe));
		group->frames[anglenum-1] = pframe;
	}

	palette = COM_LoadTempFile("wad/playpal");
	header = (doomimage_t *)COM_LoadTempMoreFile(imagename);
	data = (qbyte *)header;
	pframe->up = +header->ypos;
	pframe->down = -header->height + header->ypos;

	if (xmirrored)
	{
		pframe->right = -header->xpos;
		pframe->left = header->width - header->xpos;
	}
	else
	{
		pframe->left = -header->xpos;
		pframe->right = header->width - header->xpos;
	}

	if (header->width*header->height > sizeof(image))
		return;

	memset(image, 255, header->width*header->height);
	colpointers = (unsigned int*)(data+sizeof(doomimage_t));
	for (c = 0; c < header->width; c++)
	{
		if (colpointers[c] >= com_filesize)
			break;
		coldata = data + colpointers[c];
		while(1)
		{
			fr = *coldata++;
			if (fr == 255)
				break;

			rc = *coldata++;

			coldata++;

			if ((fr+rc) > header->height)
				break;

			while(rc)
			{
				image[c + fr*header->width] = *coldata++;
				fr++;
				rc--;
			}

			coldata++;
		}
	}

	pframe->shader = R_RegisterShader(imagename, SUF_NONE, 
		"{\n{\nmap $diffuse\nblendfunc blend\n}\n}\n");
	pframe->shader->defaulttextures.base = R_LoadTexture8Pal24(imagename, header->width, header->height, image, palette, IF_CLAMP);
	R_BuildDefaultTexnums(&pframe->shader->defaulttextures, pframe->shader);
}

/*
=================
Doom Sprites
=================
*/
void Mod_LoadDoomSprite (model_t *mod)
{
	char files[16384];
	char basename[MAX_QPATH];
	int baselen;
	char *name;

	int numframes=0;
	int ofs;

	int size;

	int elements=0;

	int framenum;
	int anglenum;

	msprite_t *psprite;


	COM_StripExtension(mod->name, basename, sizeof(basename));
	baselen = strlen(basename);
	strcat(basename, "*");
	*(int *)files=4;
	COM_EnumerateFiles(basename, FindDoomSprites, files);

	//find maxframes and validate the rest.
	for (ofs = 4; ofs < *(int*)files; ofs+=strlen(files+ofs)+1)
	{
		name = files+ofs+baselen;

		if (!*name)
			Host_Error("Doom sprite componant lacks frame name");
		if (*name - 'a'+1 > numframes)
			numframes = *name - 'a'+1;
		if (name[1] < '0' || name[1] > '8')
			Host_Error("Doom sprite componant has bad angle number");
		if (name[1] == '0')
			elements+=8;
		else
			elements++;
		if (name[2])	//is there a second element?
		{
			if (name[2] - 'a'+1 > numframes)
				numframes = name[2] - 'a'+1;
			if (name[3] < '0' || name[3] > '8')
				Host_Error("Doom sprite componant has bad angle number");

			if (name[3] == '0')
				elements+=8;
			else
				elements++;
		}
	}
	if (elements != numframes*8)
		Host_Error("Doom sprite has wrong componant count");
	if (!numframes)
		Host_Error("Doom sprite componant has no frames");

	size = sizeof (msprite_t) +	(elements - 1) * sizeof (psprite->frames);
	psprite = ZG_Malloc(&loadmodel->memgroup, size);

	psprite->numframes = numframes;

	//do the actual loading.
	for (ofs = 4; ofs < *(int*)files; ofs+=strlen(files+ofs)+1)
	{
		name = files+ofs;
		framenum = name[baselen+0] - 'a';
		anglenum = name[baselen+1] - '0';

		LoadDoomSpriteFrame(name, &psprite->frames[framenum], anglenum, false);

		if (name[baselen+2])	//is there a second element?
		{
			framenum = name[baselen+2] - 'a';
			anglenum = name[baselen+3] - '0';

			LoadDoomSpriteFrame(name, &psprite->frames[framenum], anglenum, true);
		}
	}


	psprite->type = SPR_FACING_UPRIGHT;
	mod->type = mod_sprite;

	mod->meshinfo = psprite;
}
#endif

//=============================================================================

/*
================
Mod_Print
================
*/
void Mod_Print (void)
{
	int		i;
	model_t	*mod;

	Con_Printf ("Cached models:\n");
	for (i=0, mod=mod_known ; i < mod_numknown ; i++, mod++)
	{
		Con_Printf ("%8p : %s\n", mod->meshinfo, mod->name);
	}
}


#endif