fteqw/engine/common/gl_q2bsp.c

#include "quakedef.h"
#if defined(GLQUAKE) || defined(D3DQUAKE)
#include "glquake.h"
#endif
#include "com_mesh.h"

#define MAX_Q3MAP_INDICES 0x80000
#define	MAX_Q3MAP_VERTEXES	0x80000
#define	MAX_Q3MAP_BRUSHSIDES	0x30000
#define MAX_CM_BRUSHSIDES		(MAX_Q3MAP_BRUSHSIDES << 1)
#define MAX_CM_BRUSHES			(MAX_Q2MAP_BRUSHES << 1)
#define MAX_CM_PATCH_VERTS		(4096)
#define MAX_CM_FACES			(MAX_Q2MAP_FACES)
#define MAX_CM_PATCHES			(0x10000)
#define MAX_CM_LEAFFACES		(MAX_Q2MAP_LEAFFACES)
#define	MAX_CM_AREAS			MAX_Q2MAP_AREAS

#define	Q3SURF_NODRAW			0x80	// don't generate a drawsurface at all
#define	Q3SURF_SKIP				0x200	// completely ignore, allowing non-closed brushes
#define	Q3SURF_NONSOLID			0x4000	// don't collide against curves with this set

#if Q3SURF_NODRAW != TI_NODRAW
#error "nodraw isn't constant"
#endif

extern cvar_t r_shadow_bumpscale_basetexture;

//these are in model.c (or gl_model.c)
qboolean RMod_LoadVertexes (lump_t *l);
qboolean RMod_LoadEdges (lump_t *l, qboolean lm);
qboolean RMod_LoadMarksurfaces (lump_t *l, qboolean lm);
qboolean RMod_LoadSurfedges (lump_t *l);
void RMod_LoadLighting (lump_t *l);


qboolean CM_Trace(model_t *model, int forcehullnum, int frame, vec3_t axis[3], vec3_t start, vec3_t end, vec3_t mins, vec3_t maxs, trace_t *trace);
qboolean CM_NativeTrace(model_t *model, int forcehullnum, int frame, vec3_t axis[3], vec3_t start, vec3_t end, vec3_t mins, vec3_t maxs, unsigned int contents, trace_t *trace);
unsigned int CM_NativeContents(struct model_s *model, int hulloverride, int frame, vec3_t axis[3], vec3_t p, vec3_t mins, vec3_t maxs);
unsigned int Q2BSP_PointContents(model_t *mod, vec3_t axis[3], vec3_t p);



extern char	loadname[32];
extern model_t	*loadmodel;
void RMod_Batches_Build(mesh_t *meshlist, model_t *mod, void (*build)(model_t *mod, msurface_t *surf, void *cookie), void *buildcookie);
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);
}

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] * 16;
		s->extents[i] = (bmaxs[i] - bmins[i]) * 16;

//		if ( !(tex->flags & TEX_SPECIAL) && s->extents[i] > 8176 )	//q2 uses 512. probably for skys.
//			Con_Printf ("Bad surface extents (texture %s)\n", s->texinfo->texture->name);
	}
}

void AddPointToBounds (vec3_t v, vec3_t mins, vec3_t maxs)
{
	int		i;
	vec_t	val;

	for (i=0 ; i<3 ; i++)
	{
		val = v[i];
		if (val < mins[i])
			mins[i] = val;
		if (val > maxs[i])
			maxs[i] = val;
	}
}

void ClearBounds (vec3_t mins, vec3_t maxs)
{
	mins[0] = mins[1] = mins[2] = 99999;
	maxs[0] = maxs[1] = maxs[2] = -99999;
}


void Mod_SortShaders(void)
{
	texture_t *textemp;
	int i, j;

	//sort loadmodel->textures
	for (i = 0; i < loadmodel->numtextures; i++)
	{
		for (j = i+1; j < loadmodel->numtextures; j++)
		{
			if ((loadmodel->textures[i]->shader && loadmodel->textures[j]->shader) && (loadmodel->textures[j]->shader->sort < loadmodel->textures[i]->shader->sort))
			{
				textemp = loadmodel->textures[j];
				loadmodel->textures[j] = loadmodel->textures[i];
				loadmodel->textures[i] = textemp;
			}
		}
	}
}



#ifdef Q2BSPS

qbyte *ReadPCXPalette(qbyte *buf, int len, qbyte *out);

#ifdef SERVERONLY
#define Host_Error SV_Error
#endif

extern model_t	*loadmodel;
extern qbyte *mod_base;




unsigned char d_q28to24table[1024];


/*
typedef struct q2csurface_s
{
	char		name[16];
	int			flags;
	int			value;
} q2csurface_t;
*/

typedef struct q2mapsurface_s  // used internally due to name len probs //ZOID
{
	q2csurface_t	c;
	char		rname[32];
} q2mapsurface_t;

























typedef struct {
	char		shader[MAX_QPATH];
	int			brushNum;
	int			visibleSide;	// the brush side that ray tests need to clip against (-1 == none)
} dfog_t;

typedef struct
{
	mplane_t	*plane;
	q2mapsurface_t	*surface;
} q2cbrushside_t;

typedef struct
{
	int			contents;
	int			numsides;
	q2cbrushside_t *brushside;
	int			checkcount;		// to avoid repeated testings
} q2cbrush_t;

typedef struct
{
	int		numareaportals;
	int		firstareaportal;
	int		floodnum;			// if two areas have equal floodnums, they are connected
	int		floodvalid;
} q2carea_t;

typedef struct
{
	int			numareaportals[MAX_CM_AREAS];
} q3carea_t;

typedef struct
{
	vec3_t		absmins, absmaxs;

	int			numfacets;
	q2cbrush_t	*facets;
#define numbrushes numfacets
#define brushes facets

	q2mapsurface_t	*surface;
	int			checkcount;		// to avoid repeated testings
} q3cpatch_t;

typedef struct
{
	int		facetype;

	int		numverts;
	int		firstvert;

	int		shadernum;
	int		patch_cp[2];
} q3cface_t;

typedef struct cmodel_s
{
	vec3_t		mins, maxs;
	vec3_t		origin;		// for sounds or lights
	int			headnode;
	int		numsurfaces;
	int		firstsurface;

	int firstbrush;	//q3 submodels are considered small enough that you will never need to walk any sort of tree.
	int num_brushes;//the brushes are checked instead.
} cmodel_t;

/*used to trace*/
static int			checkcount;

static mfog_t		*map_fogs;
static int			map_numfogs;

static int			numbrushsides;
static q2cbrushside_t map_brushsides[MAX_Q2MAP_BRUSHSIDES];

static int numtexinfo;
static q2mapsurface_t	*map_surfaces;

static int			numplanes;
static mplane_t	map_planes[MAX_Q2MAP_PLANES+6];		// extra for box hull

static int			numleafs = 1;	// allow leaf funcs to be called without a map
static mleaf_t		map_leafs[MAX_MAP_LEAFS];
static int			emptyleaf;

static int			numleafbrushes;
static int			map_leafbrushes[MAX_Q2MAP_LEAFBRUSHES];

static int			numcmodels;
static cmodel_t		map_cmodels[MAX_Q2MAP_MODELS];

static int			numbrushes;
static q2cbrush_t	map_brushes[MAX_Q2MAP_BRUSHES];

static int			numvisibility;
static qbyte		map_visibility[MAX_Q2MAP_VISIBILITY];
static q2dvis_t		*map_q2vis = (q2dvis_t *)map_visibility;
static q3dvis_t		*map_q3pvs = (q3dvis_t *)map_visibility;
static qbyte		map_hearability[MAX_Q2MAP_VISIBILITY];
static q3dvis_t		*map_q3phs = (q3dvis_t *)map_hearability;

static int			numentitychars;
static char		*map_entitystring;

static int			numareas = 1;
static q2carea_t		map_q2areas[MAX_Q2MAP_AREAS];
static q3carea_t		map_q3areas[MAX_CM_AREAS];

static int			numareaportals;
static q2dareaportal_t map_areaportals[MAX_Q2MAP_AREAPORTALS];

static q3cpatch_t	map_patches[MAX_CM_PATCHES];
static int			numpatches;

static int			map_leafpatches[MAX_CM_LEAFFACES];
static int			numleafpatches;

static int			numclusters = 1;

static q2mapsurface_t	nullsurface;

static int			floodvalid;

static qbyte	portalopen[MAX_Q2MAP_AREAPORTALS];	//memset will work if it's a qbyte, really it should be a qboolean


static int	mapisq3;
cvar_t		map_noareas			= SCVAR("map_noareas", "1");	//1 for lack of mod support.
cvar_t		map_noCurves		= SCVARF("map_noCurves", "0", CVAR_CHEAT);
cvar_t		map_autoopenportals	= SCVAR("map_autoopenportals", "1");	//1 for lack of mod support.
cvar_t		r_subdivisions		= SCVAR("r_subdivisions", "2");

int		CM_NumInlineModels (model_t *model);
cmodel_t	*CM_InlineModel (char *name);
void	CM_InitBoxHull (void);
void	FloodAreaConnections (void);


static int		c_pointcontents;
static int		c_traces, c_brush_traces;


static vecV_t		*map_verts;	//3points
static int			numvertexes;

static vec2_t		*map_vertstmexcoords;
static vec2_t		*map_vertlstmexcoords[4];
static vec4_t		*map_colors4f_array;
static vec3_t		*map_normals_array;
static vec3_t		*map_svector_array;
static vec3_t		*map_tvector_array;

q3cface_t	*map_faces;
static int			numfaces;

static index_t *map_surfindexes;
static int	map_numsurfindexes;

static int			*map_leaffaces;
static int			numleaffaces;





int	PlaneTypeForNormal ( vec3_t normal )
{
	vec_t	ax, ay, az;

// NOTE: should these have an epsilon around 1.0?
	if ( normal[0] >= 1.0)
		return PLANE_X;
	if ( normal[1] >= 1.0 )
		return PLANE_Y;
	if ( normal[2] >= 1.0 )
		return PLANE_Z;

	ax = fabs( normal[0] );
	ay = fabs( normal[1] );
	az = fabs( normal[2] );

	if ( ax >= ay && ax >= az )
		return PLANE_ANYX;
	if ( ay >= ax && ay >= az )
		return PLANE_ANYY;
	return PLANE_ANYZ;
}

void CategorizePlane ( mplane_t *plane )
{
	int i;

	plane->signbits = 0;
	plane->type = PLANE_ANYZ;
	for (i = 0; i < 3; i++)
	{
		if (plane->normal[i] < 0)
			plane->signbits |= 1<<i;
		if (plane->normal[i] == 1.0f)
			plane->type = i;
	}
	plane->type = PlaneTypeForNormal(plane->normal);
}

void PlaneFromPoints ( vec3_t verts[3], mplane_t *plane )
{
	vec3_t	v1, v2;

	VectorSubtract( verts[1], verts[0], v1 );
	VectorSubtract( verts[2], verts[0], v2 );
	CrossProduct( v2, v1, plane->normal );
	VectorNormalize( plane->normal );
	plane->dist = DotProduct( verts[0], plane->normal );
}

qboolean BoundsIntersect (vec3_t mins1, vec3_t maxs1, vec3_t mins2, vec3_t maxs2)
{
	return (mins1[0] <= maxs2[0] && mins1[1] <= maxs2[1] && mins1[2] <= maxs2[2] &&
		 maxs1[0] >= mins2[0] && maxs1[1] >= mins2[1] && maxs1[2] >= mins2[2]);
}

/*
===============
Patch_FlatnessTest
===============
*/
static int Patch_FlatnessTest( float maxflat2, const float *point0, const float *point1, const float *point2 )
{
	float d;
	int ft0, ft1;
	vec3_t t, n;
	vec3_t v1, v2, v3;

	VectorSubtract( point2, point0, n );
	if( !VectorNormalize( n ) )
		return 0;

	VectorSubtract( point1, point0, t );
	d = -DotProduct( t, n );
	VectorMA( t, d, n, t );
	if( DotProduct( t, t ) < maxflat2 )
		return 0;

	VectorAvg( point1, point0, v1 );
	VectorAvg( point2, point1, v2 );
	VectorAvg( v1, v2, v3 );

	ft0 = Patch_FlatnessTest( maxflat2, point0, v1, v3 );
	ft1 = Patch_FlatnessTest( maxflat2, v3, v2, point2 );

	return 1 + (int)( floor( max( ft0, ft1 ) ) + 0.5f );
}

/*
===============
Patch_GetFlatness
===============
*/
void Patch_GetFlatness( float maxflat, const float *points, int comp, const int *patch_cp, int *flat )
{
	int i, p, u, v;
	float maxflat2 = maxflat * maxflat;

	flat[0] = flat[1] = 0;
	for( v = 0; v < patch_cp[1] - 1; v += 2 )
	{
		for( u = 0; u < patch_cp[0] - 1; u += 2 )
		{
			p = v * patch_cp[0] + u;

			i = Patch_FlatnessTest( maxflat2, &points[p*comp], &points[( p+1 )*comp], &points[( p+2 )*comp] );
			flat[0] = max( flat[0], i );
			i = Patch_FlatnessTest( maxflat2, &points[( p+patch_cp[0] )*comp], &points[( p+patch_cp[0]+1 )*comp], &points[( p+patch_cp[0]+2 )*comp] );
			flat[0] = max( flat[0], i );
			i = Patch_FlatnessTest( maxflat2, &points[( p+2*patch_cp[0] )*comp], &points[( p+2*patch_cp[0]+1 )*comp], &points[( p+2*patch_cp[0]+2 )*comp] );
			flat[0] = max( flat[0], i );

			i = Patch_FlatnessTest( maxflat2, &points[p*comp], &points[( p+patch_cp[0] )*comp], &points[( p+2*patch_cp[0] )*comp] );
			flat[1] = max( flat[1], i );
			i = Patch_FlatnessTest( maxflat2, &points[( p+1 )*comp], &points[( p+patch_cp[0]+1 )*comp], &points[( p+2*patch_cp[0]+1 )*comp] );
			flat[1] = max( flat[1], i );
			i = Patch_FlatnessTest( maxflat2, &points[( p+2 )*comp], &points[( p+patch_cp[0]+2 )*comp], &points[( p+2*patch_cp[0]+2 )*comp] );
			flat[1] = max( flat[1], i );
		}
	}
}

/*
===============
Patch_Evaluate_QuadricBezier
===============
*/
static void Patch_Evaluate_QuadricBezier( float t, const vec_t *point0, const vec_t *point1, const vec_t *point2, vec_t *out, int comp )
{
	int i;
	vec_t qt = t * t;
	vec_t dt = 2.0f * t, tt, tt2;

	tt = 1.0f - dt + qt;
	tt2 = dt - 2.0f * qt;

	for( i = 0; i < comp; i++ )
		out[i] = point0[i] * tt + point1[i] * tt2 + point2[i] * qt;
}

/*
===============
Patch_Evaluate
===============
*/
void Patch_Evaluate( const vec_t *p, const int *numcp, const int *tess, vec_t *dest, int comp )
{
	int num_patches[2], num_tess[2];
	int index[3], dstpitch, i, u, v, x, y;
	float s, t, step[2];
	vec_t *tvec, *tvec2;
	const vec_t *pv[3][3];
	vec4_t v1, v2, v3;

	num_patches[0] = numcp[0] / 2;
	num_patches[1] = numcp[1] / 2;
	dstpitch = ( num_patches[0] * tess[0] + 1 ) * comp;

	step[0] = 1.0f / (float)tess[0];
	step[1] = 1.0f / (float)tess[1];

	for( v = 0; v < num_patches[1]; v++ )
	{
		// last patch has one more row
		if( v < num_patches[1] - 1 )
			num_tess[1] = tess[1];
		else
			num_tess[1] = tess[1] + 1;

		for( u = 0; u < num_patches[0]; u++ )
		{
			// last patch has one more column
			if( u < num_patches[0] - 1 )
				num_tess[0] = tess[0];
			else
				num_tess[0] = tess[0] + 1;

			index[0] = ( v * numcp[0] + u ) * 2;
			index[1] = index[0] + numcp[0];
			index[2] = index[1] + numcp[0];

			// current 3x3 patch control points
			for( i = 0; i < 3; i++ )
			{
				pv[i][0] = &p[( index[0]+i ) * comp];
				pv[i][1] = &p[( index[1]+i ) * comp];
				pv[i][2] = &p[( index[2]+i ) * comp];
			}

			tvec = dest + v * tess[1] * dstpitch + u * tess[0] * comp;
			for( y = 0, t = 0.0f; y < num_tess[1]; y++, t += step[1], tvec += dstpitch )
			{
				Patch_Evaluate_QuadricBezier( t, pv[0][0], pv[0][1], pv[0][2], v1, comp );
				Patch_Evaluate_QuadricBezier( t, pv[1][0], pv[1][1], pv[1][2], v2, comp );
				Patch_Evaluate_QuadricBezier( t, pv[2][0], pv[2][1], pv[2][2], v3, comp );

				for( x = 0, tvec2 = tvec, s = 0.0f; x < num_tess[0]; x++, s += step[0], tvec2 += comp )
					Patch_Evaluate_QuadricBezier( s, v1, v2, v3, tvec2, comp );
			}
		}
	}
}


#define	PLANE_NORMAL_EPSILON	0.00001
#define	PLANE_DIST_EPSILON	0.01
static qboolean ComparePlanes( const vec3_t p1normal, vec_t p1dist, const vec3_t p2normal, vec_t p2dist )
{
	if( fabs( p1normal[0] - p2normal[0] ) < PLANE_NORMAL_EPSILON
	    && fabs( p1normal[1] - p2normal[1] ) < PLANE_NORMAL_EPSILON
	    && fabs( p1normal[2] - p2normal[2] ) < PLANE_NORMAL_EPSILON
	    && fabs( p1dist - p2dist ) < PLANE_DIST_EPSILON )
		return true;

	return false;
}

static void SnapVector( vec3_t normal )
{
	int i;

	for( i = 0; i < 3; i++ )
	{
		if( fabs( normal[i] - 1 ) < PLANE_NORMAL_EPSILON )
		{
			VectorClear( normal );
			normal[i] = 1;
			break;
		}
		if( fabs( normal[i] - -1 ) < PLANE_NORMAL_EPSILON )
		{
			VectorClear( normal );
			normal[i] = -1;
			break;
		}
	}
}

#define Q_rint( x )   ( ( x ) < 0 ? ( (int)( ( x )-0.5f ) ) : ( (int)( ( x )+0.5f ) ) )
static void SnapPlane( vec3_t normal, vec_t *dist )
{
	SnapVector( normal );

	if( fabs( *dist - Q_rint( *dist ) ) < PLANE_DIST_EPSILON )
	{
		*dist = Q_rint( *dist );
	}
}

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

					PATCH LOADING

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

#define MAX_FACET_PLANES 32
#define cm_subdivlevel	15

/*
* CM_CreateFacetFromPoints
*/
static int CM_CreateFacetFromPoints(q2cbrush_t *facet, vec3_t *verts, int numverts, q2mapsurface_t *shaderref, mplane_t *brushplanes )
{
	int i, j, k;
	int axis, dir;
	vec3_t normal, mins, maxs;
	float d, dist;
	mplane_t mainplane;
	vec3_t vec, vec2;
	int numbrushplanes;

	// set default values for brush
	facet->numsides = 0;
	facet->brushside = NULL;
	facet->contents = shaderref->c.value;

	// calculate plane for this triangle
	PlaneFromPoints( verts, &mainplane );
	if( ComparePlanes( mainplane.normal, mainplane.dist, vec3_origin, 0 ) )
		return 0;

	// test a quad case
	if( numverts > 3 )
	{
		d = DotProduct( verts[3], mainplane.normal ) - mainplane.dist;
		if( d < -0.1 || d > 0.1 )
			return 0;

		if( 0 )
		{
			vec3_t v[3];
			mplane_t plane;

			// try different combinations of planes
			for( i = 1; i < 4; i++ )
			{
				VectorCopy( verts[i], v[0] );
				VectorCopy( verts[( i+1 )%4], v[1] );
				VectorCopy( verts[( i+2 )%4], v[2] );
				PlaneFromPoints( v, &plane );

				if( fabs( DotProduct( mainplane.normal, plane.normal ) ) < 0.9 )
					return 0;
			}
		}
	}

	numbrushplanes = 0;

	// add front plane
	SnapPlane( mainplane.normal, &mainplane.dist );
	VectorCopy( mainplane.normal, brushplanes[numbrushplanes].normal );
	brushplanes[numbrushplanes].dist = mainplane.dist; numbrushplanes++;

	// calculate mins & maxs
	ClearBounds( mins, maxs );
	for( i = 0; i < numverts; i++ )
		AddPointToBounds( verts[i], mins, maxs );

	// add the axial planes
	for( axis = 0; axis < 3; axis++ )
	{
		for( dir = -1; dir <= 1; dir += 2 )
		{
			for( i = 0; i < numbrushplanes; i++ )
			{
				if( brushplanes[i].normal[axis] == dir )
					break;
			}

			if( i == numbrushplanes )
			{
				VectorClear( normal );
				normal[axis] = dir;
				if( dir == 1 )
					dist = maxs[axis];
				else
					dist = -mins[axis];

				VectorCopy( normal, brushplanes[numbrushplanes].normal );
				brushplanes[numbrushplanes].dist = dist; numbrushplanes++;
			}
		}
	}

	// add the edge bevels
	for( i = 0; i < numverts; i++ )
	{
		j = ( i + 1 ) % numverts;
		k = ( i + 2 ) % numverts;

		VectorSubtract( verts[i], verts[j], vec );
		if( VectorNormalize( vec ) < 0.5 )
			continue;

		SnapVector( vec );
		for( j = 0; j < 3; j++ )
		{
			if( vec[j] == 1 || vec[j] == -1 )
				break; // axial
		}
		if( j != 3 )
			continue; // only test non-axial edges

		// try the six possible slanted axials from this edge
		for( axis = 0; axis < 3; axis++ )
		{
			for( dir = -1; dir <= 1; dir += 2 )
			{
				// construct a plane
				VectorClear( vec2 );
				vec2[axis] = dir;
				CrossProduct( vec, vec2, normal );
				if( VectorNormalize( normal ) < 0.5 )
					continue;
				dist = DotProduct( verts[i], normal );

				for( j = 0; j < numbrushplanes; j++ )
				{
					// if this plane has already been used, skip it
					if( ComparePlanes( brushplanes[j].normal, brushplanes[j].dist, normal, dist ) )
						break;
				}
				if( j != numbrushplanes )
					continue;

				// if all other points are behind this plane, it is a proper edge bevel
				for( j = 0; j < numverts; j++ )
				{
					if( j != i )
					{
						d = DotProduct( verts[j], normal ) - dist;
						if( d > 0.1 )
							break; // point in front: this plane isn't part of the outer hull
					}
				}
				if( j != numverts )
					continue;

				// add this plane
				VectorCopy( normal, brushplanes[numbrushplanes].normal );
				brushplanes[numbrushplanes].dist = dist; numbrushplanes++;
				if( numbrushplanes == MAX_FACET_PLANES )
					break;
			}
		}
	}

	return ( facet->numsides = numbrushplanes );
}

/*
* CM_CreatePatch
*/
static void CM_CreatePatch( q3cpatch_t *patch, q2mapsurface_t *shaderref, const vec_t *verts, const int *patch_cp )
{
	int step[2], size[2], flat[2];
	int i, j, k ,u, v;
	int numsides, totalsides;
	q2cbrush_t *facets, *facet;
	vecV_t *points;
	vec3_t tverts[4];
	qbyte *data;
	mplane_t *brushplanes;

	patch->surface = shaderref;

	// find the degree of subdivision in the u and v directions
	Patch_GetFlatness( cm_subdivlevel, verts, sizeof(vecV_t)/sizeof(vec_t), patch_cp, flat );

	step[0] = 1 << flat[0];
	step[1] = 1 << flat[1];
	size[0] = ( patch_cp[0] >> 1 ) * step[0] + 1;
	size[1] = ( patch_cp[1] >> 1 ) * step[1] + 1;
	if( size[0] <= 0 || size[1] <= 0 )
		return;

	data = BZ_Malloc( size[0] * size[1] * sizeof( vecV_t ) +
		( size[0]-1 ) * ( size[1]-1 ) * 2 * ( sizeof( q2cbrush_t ) + 32 * sizeof( mplane_t ) ) );

	points = ( vecV_t * )data; data += size[0] * size[1] * sizeof( vecV_t );
	facets = ( q2cbrush_t * )data; data += ( size[0]-1 ) * ( size[1]-1 ) * 2 * sizeof( q2cbrush_t );
	brushplanes = ( mplane_t * )data; data += ( size[0]-1 ) * ( size[1]-1 ) * 2 * MAX_FACET_PLANES * sizeof( mplane_t );

	// fill in
	Patch_Evaluate(verts, patch_cp, step, points[0], sizeof(vecV_t)/sizeof(vec_t));

	totalsides = 0;
	patch->numfacets = 0;
	patch->facets = NULL;
	ClearBounds( patch->absmins, patch->absmaxs );

	// create a set of facets
	for( v = 0; v < size[1]-1; v++ )
	{
		for( u = 0; u < size[0]-1; u++ )
		{
			i = v * size[0] + u;
			VectorCopy( points[i], tverts[0] );
			VectorCopy( points[i + size[0]], tverts[1] );
			VectorCopy( points[i + size[0] + 1], tverts[2] );
			VectorCopy( points[i + 1], tverts[3] );

			for( i = 0; i < 4; i++ )
				AddPointToBounds( tverts[i], patch->absmins, patch->absmaxs );

			// try to create one facet from a quad
			numsides = CM_CreateFacetFromPoints( &facets[patch->numfacets], tverts, 4, shaderref, brushplanes + totalsides );
			if( !numsides )
			{	// create two facets from triangles
				VectorCopy( tverts[3], tverts[2] );
				numsides = CM_CreateFacetFromPoints( &facets[patch->numfacets], tverts, 3, shaderref, brushplanes + totalsides );
				if( numsides )
				{
					totalsides += numsides;
					patch->numfacets++;
				}

				VectorCopy( tverts[2], tverts[0] );
				VectorCopy( points[v *size[0] + u + size[0] + 1], tverts[2] );
				numsides = CM_CreateFacetFromPoints( &facets[patch->numfacets], tverts, 3, shaderref, brushplanes + totalsides );
			}

			if( numsides )
			{
				totalsides += numsides;
				patch->numfacets++;
			}
		}
	}

	if (patch->numfacets)
	{
		qbyte *data;

		data = Hunk_Alloc( patch->numfacets * sizeof( q2cbrush_t ) + totalsides * ( sizeof( q2cbrushside_t ) + sizeof( mplane_t ) ) );

		patch->facets = ( q2cbrush_t * )data; data += patch->numfacets * sizeof( q2cbrush_t );
		memcpy( patch->facets, facets, patch->numfacets * sizeof( q2cbrush_t ) );
		for( i = 0, k = 0, facet = patch->facets; i < patch->numfacets; i++, facet++ )
		{
			mplane_t *planes;
			q2cbrushside_t *s;

			facet->brushside = ( q2cbrushside_t * )data; data += facet->numsides * sizeof( q2cbrushside_t );
			planes = ( mplane_t * )data; data += facet->numsides * sizeof( mplane_t );

			for( j = 0, s = facet->brushside; j < facet->numsides; j++, s++ )
			{
				planes[j] = brushplanes[k++];

				s->plane = &planes[j];
				SnapPlane( s->plane->normal, &s->plane->dist );
				CategorizePlane( s->plane );
				s->surface = shaderref;
			}
		}

		for( i = 0; i < 3; i++ )
		{
			// spread the mins / maxs by a pixel
			patch->absmins[i] -= 1;
			patch->absmaxs[i] += 1;
		}
	}

	BZ_Free( points );
}

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

/*
=================
CM_CreatePatchesForLeafs
=================
*/
qboolean CM_CreatePatchesForLeafs (void)
{
	int i, j, k;
	mleaf_t *leaf;
	q3cface_t *face;
	q2mapsurface_t *surf;
	q3cpatch_t *patch;
	int checkout[MAX_CM_FACES];

	if (map_noCurves.ival)
		return true;

	memset (checkout, -1, sizeof(int)*MAX_CM_FACES);

	for (i = 0, leaf = map_leafs; i < numleafs; i++, leaf++)
	{
		leaf->numleafpatches = 0;
		leaf->firstleafpatch = numleafpatches;

		if (leaf->cluster == -1)
			continue;

		for (j=0 ; j<leaf->numleaffaces ; j++)
		{
			k = leaf->firstleafface + j;
			if (k >= numleaffaces) {
				break;
			}

			k = map_leaffaces[k];
			face = &map_faces[k];

			if (face->facetype != MST_PATCH || face->numverts <= 0)
				continue;
			if (face->patch_cp[0] <= 0 || face->patch_cp[1] <= 0)
				continue;
			if (face->shadernum < 0 || face->shadernum >= loadmodel->numtextures)
				continue;

			surf = &map_surfaces[face->shadernum];
			if ( !surf->c.value || (surf->c.flags & Q3SURF_NONSOLID) )
				continue;

			if ( numleafpatches >= MAX_CM_LEAFFACES )
			{
				Con_Printf (CON_ERROR "CM_CreatePatchesForLeafs: map has too many faces\n");
				return false;
			}

			// the patch was already built
			if (checkout[k] != -1)
			{
				map_leafpatches[numleafpatches] = checkout[k];
				patch = &map_patches[checkout[k]];
			}
			else
			{
				if (numpatches >= MAX_CM_PATCHES)
				{
					Con_Printf (CON_ERROR "CM_CreatePatchesForLeafs: map has too many patches\n");
					return false;
				}

				patch = &map_patches[numpatches];
				map_leafpatches[numleafpatches] = numpatches;
				checkout[k] = numpatches++;

//gcc warns without this cast
				CM_CreatePatch ( patch, surf, (const vec_t *)(map_verts + face->firstvert), face->patch_cp );
			}

			leaf->contents |= patch->surface->c.value;
			leaf->numleafpatches++;

			numleafpatches++;
		}
	}

	return true;
}



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

					MAP LOADING

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

qbyte	*cmod_base;

/*
=================
CMod_LoadSubmodels
=================
*/
qboolean CMod_LoadSubmodels (lump_t *l)
{
	q2dmodel_t	*in;
	cmodel_t	*out;
	int			i, j, count;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	if (count < 1)
	{
		Con_Printf (CON_ERROR "Map with no models\n");
		return false;
	}
	if (count > MAX_Q2MAP_MODELS)
	{
		Con_Printf (CON_ERROR "Map has too many models\n");
		return false;
	}

	numcmodels = count;

	for ( i=0 ; i<count ; i++, in++, out++)
	{
		out = &map_cmodels[i];

		for (j=0 ; j<3 ; j++)
		{	// spread the mins / maxs by a pixel
			out->mins[j] = LittleFloat (in->mins[j]) - 1;
			out->maxs[j] = LittleFloat (in->maxs[j]) + 1;
			out->origin[j] = LittleFloat (in->origin[j]);
		}
		out->headnode = LittleLong (in->headnode);
		out->firstsurface = LittleLong (in->firstface);
		out->numsurfaces = LittleLong (in->numfaces);
	}

	return true;
}


/*
=================
CMod_LoadSurfaces
=================
*/
qboolean CMod_LoadSurfaces (lump_t *l)
{
	q2texinfo_t	*in;
	q2mapsurface_t	*out;
	int			i, count;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);
	if (count < 1)
	{
		Con_Printf (CON_ERROR "Map with no surfaces\n");
		return false;
	}
//	if (count > MAX_Q2MAP_TEXINFO)
//		Host_Error ("Map has too many surfaces");

	numtexinfo = count;
	out = map_surfaces = Hunk_Alloc(count * sizeof(*map_surfaces));

	for ( i=0 ; i<count ; i++, in++, out++)
	{
		Q_strncpyz (out->c.name, in->texture, sizeof(out->c.name));
		Q_strncpyz (out->rname, in->texture, sizeof(out->rname));
		out->c.flags = LittleLong (in->flags);
		out->c.value = LittleLong (in->value);
	}

	return true;
}
#ifndef SERVERONLY
texture_t *Mod_LoadWall(char *name, char *sname)
{
	q2miptex_t replacementwal;
	qbyte *in, *oin;
	texture_t *tex;
	q2miptex_t *wal;
	int j;
	char ln[32];
	texnums_t tn;
	memset(&tn, 0, sizeof(tn));

	COM_FileBase(name, ln, sizeof(ln));

	wal = (void *)FS_LoadMallocFile (name);
	if (!wal)
	{
		tn.base = R_LoadReplacementTexture(name, loadname, 0);
		wal = &replacementwal;
		memset(wal, 0, sizeof(*wal));
		Q_strncpyz(wal->name, name, sizeof(wal->name));
		wal->width = image_width;
		wal->height = image_height;
	}
	else
		tn.base = R_LoadReplacementTexture(wal->name, loadname, IF_NOALPHA);

	wal->width = LittleLong(wal->width);
	wal->height = LittleLong(wal->height);
	{
		int i;

		for (i = 0; i < MIPLEVELS; i++)
			wal->offsets[i] = LittleLong(wal->offsets[i]);
	}

	wal->flags = LittleLong(wal->flags);
	wal->contents = LittleLong(wal->contents);
	wal->value = LittleLong(wal->value);

	tex = Hunk_AllocName(sizeof(texture_t), ln);

	tex->offsets[0] = wal->offsets[0];
	tex->width = wal->width;
	tex->height = wal->height;

	if (!TEXVALID(tn.base))
	{
		tn.base = R_LoadReplacementTexture(wal->name, "bmodels", IF_NOALPHA);
		if (!TEXVALID(tn.base))
		{
			if (!wal->offsets[0])
			{
				//they will download eventually...
				CL_CheckOrEnqueDownloadFile(name, NULL, 0);
				return NULL;
			}
			tn.base = R_LoadTexture8Pal24 (wal->name, tex->width, tex->height, (qbyte *)wal+wal->offsets[0], d_q28to24table, IF_NOALPHA|IF_NOGAMMA);
		}
	}

	if (wal->offsets[0])
	{
		in = Hunk_TempAllocMore(wal->width*wal->height);
		oin = (qbyte *)wal+wal->offsets[0];
		for (j = 0; j < wal->width*wal->height; j++)
			in[j] = (d_q28to24table[oin[j]*3+0] + d_q28to24table[oin[j]*3+1] + d_q28to24table[oin[j]*3+2])/3;
		tn.bump = R_LoadTexture8BumpPal (va("%s_bump", wal->name), tex->width, tex->height, in, true);
	}

	if (wal != &replacementwal)
		BZ_Free(wal);

	tex->shader = R_RegisterCustom (sname, Shader_DefaultBSPQ2, NULL);
	R_BuildDefaultTexnums(&tn, tex->shader);

	return tex;
}

qboolean CMod_LoadTexInfo (lump_t *l)	//yes I know these load from the same place
{
	q2texinfo_t *in;
	mtexinfo_t *out;
	int 	i, j, count;
	char	name[MAX_QPATH], *lwr;
	char	sname[MAX_QPATH];
	float	len1, len2;
	int texcount;

	in = (void *)(cmod_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 = Hunk_AllocName ( count*sizeof(*out), loadname);

	loadmodel->textures = Hunk_AllocName(sizeof(texture_t *)*count, loadname);
	texcount = 0;

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

	for ( i=0 ; i<count ; i++, in++, out++)
	{
		out->flags = LittleLong (in->flags);

		for (j=0 ; j<8 ; j++)
			out->vecs[0][j] = LittleFloat (in->vecs[0][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 (out->flags & TI_SKY)
			snprintf(sname, sizeof(sname), "sky/%s", in->texture);
		else if (out->flags & (TI_WARP|TI_TRANS33|TI_TRANS66))
			snprintf(sname, sizeof(sname), "%s%s/%s", ((out->flags&TI_WARP)?"warp":"trans"), ((out->flags&TI_TRANS66)?"66":(out->flags&TI_TRANS33?"33":"")), in->texture);
		else
			snprintf(sname, sizeof(sname), "wall/%s", in->texture);

		//compact the textures.
		for (j=0; j < texcount; j++)
		{
			if (!strcmp(sname, loadmodel->textures[j]->name))
			{
				out->texture = loadmodel->textures[j];
				break;
			}
		}
		if (j == texcount)	//load a new one
		{
			for (lwr = in->texture; *lwr; lwr++)
			{
				if (*lwr >= 'A' && *lwr <= 'Z')
					*lwr = *lwr - 'A' + 'a';
			}
			snprintf (name, sizeof(name), "textures/%s.wal", in->texture);

			out->texture = Mod_LoadWall (name, sname);
			if (!out->texture || !out->texture->width || !out->texture->height)
			{
				out->texture = Hunk_Alloc(sizeof(texture_t) + 16*16+8*8+4*4+2*2);

				Con_Printf (CON_WARNING "Couldn't load %s\n", name);
				memcpy(out->texture, r_notexture_mip, sizeof(texture_t) + 16*16+8*8+4*4+2*2);
			}

			Q_strncpyz(out->texture->name, sname, sizeof(out->texture->name));

			loadmodel->textures[texcount++] = out->texture;
		}
	}

	loadmodel->numtextures = texcount;

	Mod_SortShaders();
	return true;
}
#endif
/*
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] * 16;
		s->extents[i] = (bmaxs[i] - bmins[i]) * 16;

//		if ( !(tex->flags & TEX_SPECIAL) && s->extents[i] > 512 )// 256 )
//			Sys_Error ("Bad surface extents");
	}
}*/


/*
=================
Mod_LoadFaces
=================
*/
#ifndef SERVERONLY
qboolean CMod_LoadFaces (lump_t *l)
{
	dsface_t		*in;
	msurface_t 	*out;
	int			i, count, surfnum;
	int			planenum, side;
	int			ti;

	in = (void *)(cmod_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 = Hunk_AllocName ( (count+6)*sizeof(*out), loadname);	//spare for skybox

	loadmodel->surfaces = out;
	loadmodel->numsurfaces = count;

	for ( surfnum=0 ; surfnum<count ; surfnum++, in++, out++)
	{
		out->firstedge = LittleLong(in->firstedge);
		out->numedges = LittleShort(in->numedges);
		out->flags = 0;

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

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

		ti = LittleShort (in->texinfo);
		if (ti < 0 || ti >= loadmodel->numtexinfo)
		{
			Con_Printf (CON_ERROR "MOD_LoadBmodel: bad texinfo number\n");
			return false;
		}
		out->texinfo = loadmodel->texinfo + ti;

#ifndef SERVERONLY
		if (out->texinfo->flags & TI_SKY)
		{
			out->flags |= SURF_DRAWSKY;
		}
		if (out->texinfo->flags & TI_WARP)
		{
			out->flags |= SURF_DRAWTURB|SURF_DRAWTILED;
		}
#endif

		CalcSurfaceExtents (out);

	// lighting info

		for (i=0 ; i<MAXLIGHTMAPS ; i++)
			out->styles[i] = in->styles[i];
		i = LittleLong(in->lightofs);
		if (i == -1)
			out->samples = NULL;
#if defined(GLQUAKE) || defined(D3DQUAKE)
		else if (qrenderer == QR_OPENGL || qrenderer == QR_DIRECT3D)
			out->samples = loadmodel->lightdata + i;
#endif
		else
			out->samples = loadmodel->lightdata + i/3;

	// set the drawing flags

		if (out->texinfo->flags & TI_WARP)
		{
			out->flags |= SURF_DRAWTURB;
			for (i=0 ; i<2 ; i++)
			{
				out->extents[i] = 16384;
				out->texturemins[i] = -8192;
			}
		}

	}

	return true;
}
#endif

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

/*
=================
CMod_LoadNodes

=================
*/
qboolean CMod_LoadNodes (lump_t *l)
{
	q2dnode_t		*in;
	int			child;
	mnode_t		*out;
	int			i, j, count;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	if (count < 1)
	{
		Con_Printf (CON_ERROR "Map has no nodes\n");
		return false;
	}
	if (count > MAX_MAP_NODES)
	{
		Con_Printf (CON_ERROR "Map has too many nodes\n");
		return false;
	}

	out = Hunk_Alloc(sizeof(mnode_t)*count);

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

	for (i=0 ; i<count ; i++, out++, in++)
	{
		memset(out, 0, sizeof(*out));

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

		out->plane = map_planes + LittleLong(in->planenum);

		out->firstsurface = LittleShort (in->firstface);
		out->numsurfaces = LittleShort (in->numfaces);
		out->contents = -1;	// differentiate from leafs

		for (j=0 ; j<2 ; j++)
		{
			child = LittleLong (in->children[j]);
			out->childnum[j] = child;
			if (child < 0)
				out->children[j] = (mnode_t *)(map_leafs + -1-child);
			else
				out->children[j] = loadmodel->nodes + child;
		}
	}

	CMod_SetParent (loadmodel->nodes, NULL);	// sets nodes and leafs

	return true;
}

/*
=================
CMod_LoadBrushes

=================
*/
qboolean CMod_LoadBrushes (lump_t *l)
{
	q2dbrush_t	*in;
	q2cbrush_t	*out;
	int			i, count;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	if (count > MAX_Q2MAP_BRUSHES)
	{
		Con_Printf (CON_ERROR "Map has too many brushes");
		return false;
	}

	out = map_brushes;

	numbrushes = count;

	for (i=0 ; i<count ; i++, out++, in++)
	{
		//FIXME: missing bounds checks
		out->brushside = &map_brushsides[LittleLong(in->firstside)];
		out->numsides = LittleLong(in->numsides);
		out->contents = LittleLong(in->contents);
	}

	return true;
}

/*
=================
CMod_LoadLeafs
=================
*/
qboolean CMod_LoadLeafs (lump_t *l)
{
	int			i, j;
	mleaf_t		*out;
	q2dleaf_t 	*in;
	int			count;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	if (count < 1)
	{
		Con_Printf (CON_ERROR "Map with no leafs\n");
		return false;
	}
	// need to save space for box planes
	if (count > MAX_Q2MAP_PLANES)
	{
		Con_Printf (CON_ERROR "Map has too many planes\n");
		return false;
	}

	out = map_leafs;
	numleafs = count;
	numclusters = 0;

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

	for ( i=0 ; i<count ; i++, in++, out++)
	{
		memset(out, 0, sizeof(*out));

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

		out->contents = LittleLong (in->contents);
		out->cluster = (unsigned short)LittleShort (in->cluster);
		if (out->cluster == 0xffff)
			out->cluster = -1;

		out->area = LittleShort (in->area);
		out->firstleafbrush = (unsigned short)LittleShort (in->firstleafbrush);
		out->numleafbrushes = (unsigned short)LittleShort (in->numleafbrushes);

		out->firstmarksurface = loadmodel->marksurfaces +
			(unsigned short)LittleShort(in->firstleafface);
		out->nummarksurfaces = (unsigned short)LittleShort(in->numleaffaces);

		if (out->cluster >= numclusters)
			numclusters = out->cluster + 1;
	}

	if (map_leafs[0].contents != Q2CONTENTS_SOLID)
	{
		Con_Printf (CON_ERROR "Map leaf 0 is not CONTENTS_SOLID\n");
		return false;
	}

	emptyleaf = -1;
	for (i=1 ; i<numleafs ; i++)
	{
		if (!map_leafs[i].contents)
		{
			emptyleaf = i;
			break;
		}
	}
	if (emptyleaf == -1)
	{
		Con_Printf (CON_ERROR "Map does not have an empty leaf\n");
		return false;
	}
	return true;
}

/*
=================
CMod_LoadPlanes
=================
*/
qboolean CMod_LoadPlanes (lump_t *l)
{
	int			i, j;
	mplane_t	*out;
	dplane_t 	*in;
	int			count;
	int			bits;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	if (count < 1)
	{
		Con_Printf (CON_ERROR "Map with no planes\n");
		return false;
	}
	// need to save space for box planes
	if (count >= MAX_Q2MAP_PLANES)
	{
		Con_Printf (CON_ERROR "Map has too many planes\n");
		return false;
	}

	out = map_planes;
	numplanes = count;


	loadmodel->planes = out;
	loadmodel->numplanes = count;

	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;
	}

	return true;
}

/*
=================
CMod_LoadLeafBrushes
=================
*/
qboolean CMod_LoadLeafBrushes (lump_t *l)
{
	int			i;
	int	*out;
	unsigned short 	*in;
	int			count;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	if (count < 1)
	{
		Con_Printf (CON_ERROR "Map with no planes\n");
		return false;
	}
	// need to save space for box planes
	if (count > MAX_Q2MAP_LEAFBRUSHES)
	{
		Con_Printf (CON_ERROR "Map has too many leafbrushes\n");
		return false;
	}

	out = map_leafbrushes;
	numleafbrushes = count;

	for ( i=0 ; i<count ; i++, in++, out++)
		*out = LittleShort (*in);

	return true;
}

/*
=================
CMod_LoadBrushSides
=================
*/
qboolean CMod_LoadBrushSides (lump_t *l)
{
	int			i, j;
	q2cbrushside_t	*out;
	q2dbrushside_t 	*in;
	int			count;
	int			num;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	// need to save space for box planes
	if (count > MAX_Q2MAP_BRUSHSIDES)
	{
		Con_Printf (CON_ERROR "Map has too many planes\n");
		return false;
	}

	out = map_brushsides;
	numbrushsides = count;

	for ( i=0 ; i<count ; i++, in++, out++)
	{
		num = LittleShort (in->planenum);
		out->plane = &map_planes[num];
		j = LittleShort (in->texinfo);
		if (j >= numtexinfo)
		{
			Con_Printf (CON_ERROR "Bad brushside texinfo\n");
			return false;
		}
		out->surface = &map_surfaces[j];
	}

	return true;
}

/*
=================
CMod_LoadAreas
=================
*/
qboolean CMod_LoadAreas (lump_t *l)
{
	int			i;
	q2carea_t		*out;
	q2darea_t 	*in;
	int			count;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	if (count > MAX_Q2MAP_AREAS)
	{
		Con_Printf (CON_ERROR "Map has too many areas\n");
		return false;
	}

	out = map_q2areas;
	numareas = count;

	for ( i=0 ; i<count ; i++, in++, out++)
	{
		out->numareaportals = LittleLong (in->numareaportals);
		out->firstareaportal = LittleLong (in->firstareaportal);
		out->floodvalid = 0;
		out->floodnum = 0;
	}

	return true;
}

/*
=================
CMod_LoadAreaPortals
=================
*/
qboolean CMod_LoadAreaPortals (lump_t *l)
{
	int			i;
	q2dareaportal_t		*out;
	q2dareaportal_t 	*in;
	int			count;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	if (count > MAX_Q2MAP_AREAS)
	{
		Con_Printf (CON_ERROR "Map has too many areas\n");
		return false;
	}

	out = map_areaportals;
	numareaportals = count;

	for ( i=0 ; i<count ; i++, in++, out++)
	{
		out->portalnum = LittleLong (in->portalnum);
		out->otherarea = LittleLong (in->otherarea);
	}

	return true;
}

/*
=================
CMod_LoadVisibility
=================
*/
qboolean CMod_LoadVisibility (lump_t *l)
{
	int		i;

	numvisibility = l->filelen;
	if (l->filelen > MAX_Q2MAP_VISIBILITY)
	{
		Con_Printf (CON_ERROR "Map has too large visibility lump\n");
		return false;
	}

	memcpy (map_visibility, cmod_base + l->fileofs, l->filelen);

	loadmodel->vis = map_q2vis;

	map_q2vis->numclusters = LittleLong (map_q2vis->numclusters);
	for (i=0 ; i<map_q2vis->numclusters ; i++)
	{
		map_q2vis->bitofs[i][0] = LittleLong (map_q2vis->bitofs[i][0]);
		map_q2vis->bitofs[i][1] = LittleLong (map_q2vis->bitofs[i][1]);
	}

	return true;
}

/*
=================
CMod_LoadEntityString
=================
*/
void CMod_LoadEntityString (lump_t *l)
{
	numentitychars = l->filelen;
//	if (l->filelen > MAX_Q2MAP_ENTSTRING)
//		Host_Error ("Map has too large entity lump");

	map_entitystring = Hunk_Alloc(l->filelen+1);
	memcpy (map_entitystring, cmod_base + l->fileofs, l->filelen);

	loadmodel->entities = map_entitystring;
}




qboolean CModQ3_LoadMarksurfaces (lump_t *l)
{
	int		i, j, count;
	int		*in;
	msurface_t **out;

	in = (void *)(mod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "CModQ3_LoadMarksurfaces: funny lump size in %s\n",loadmodel->name);
		return false;
	}
	count = l->filelen / sizeof(*in);
	out = Hunk_AllocName ( count*sizeof(*out), loadname);

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

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

	return true;
}

qboolean CModQ3_LoadSubmodels (lump_t *l)
{
	q3dmodel_t	*in;
	cmodel_t	*out;
	int			i, j, count;
	int			*leafbrush;
	mleaf_t		*bleaf;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	if (count < 1)
	{
		Con_Printf (CON_ERROR "Map with no models\n");
		return false;
	}
	if (count > MAX_Q2MAP_MODELS)
	{
		Con_Printf (CON_ERROR "Map has too many models\n");
		return false;
	}

	numcmodels = count;

	mapisq3 = true;

	for ( i=0 ; i<count ; i++, in++, out++)
	{
		out = &map_cmodels[i];

		for (j=0 ; j<3 ; j++)
		{	// spread the mins / maxs by a pixel
			out->mins[j] = LittleFloat (in->mins[j]) - 1;
			out->maxs[j] = LittleFloat (in->maxs[j]) + 1;
			out->origin[j] = (out->maxs[j] + out->mins[j])/2;
		}
		out->firstsurface = LittleLong (in->firstsurface);
		out->numsurfaces = LittleLong (in->num_surfaces);
		if (!i)
			out->headnode = 0;
		else
		{
//create a new leaf to hold the bruses and be directly clipped
			out->headnode = -1 - numleafs;

//			out->firstbrush = LittleLong(in->firstbrush);
//			out->num_brushes = LittleLong(in->num_brushes);

			bleaf = &map_leafs[numleafs++];
			bleaf->numleafbrushes = LittleLong ( in->num_brushes );
			bleaf->firstleafbrush = numleafbrushes;
			bleaf->contents = 0;

			leafbrush = &map_leafbrushes[numleafbrushes];
			for ( j = 0; j < bleaf->numleafbrushes; j++, leafbrush++ ) {
				*leafbrush = LittleLong ( in->firstbrush ) + j;
				bleaf->contents |= map_brushes[*leafbrush].contents;
			}
			numleafbrushes += bleaf->numleafbrushes;
		}
		//submodels
	}

	VectorCopy(map_cmodels[0].mins, loadmodel->mins);
	VectorCopy(map_cmodels[0].maxs, loadmodel->maxs);

	return true;
}

qboolean CModQ3_LoadShaders (lump_t *l)
{
	dq3shader_t	*in;
	q2mapsurface_t	*out;
	int				i, count;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	if (count < 1)
	{
		Con_Printf (CON_ERROR "Map with no shaders\n");
		return false;
	}
//	else if (count > MAX_Q2MAP_TEXINFO)
//		Host_Error ("Map has too many shaders");

	numtexinfo = count;
	out = map_surfaces = Hunk_Alloc(count*sizeof(*out));

	loadmodel->texinfo = Hunk_Alloc(sizeof(mtexinfo_t)*count);
	loadmodel->numtextures = count;
	loadmodel->textures = Hunk_Alloc(sizeof(texture_t*)*count);

	for ( i=0 ; i<count ; i++, in++, out++ )
	{
		loadmodel->texinfo[i].texture = Hunk_Alloc(sizeof(texture_t));
		Q_strncpyz(loadmodel->texinfo[i].texture->name, in->shadername, sizeof(loadmodel->texinfo[i].texture->name));
		loadmodel->textures[i] = loadmodel->texinfo[i].texture;

		out->c.flags = LittleLong ( in->surfflags );
		out->c.value = LittleLong ( in->contents );
	}

	return true;
}

qboolean CModQ3_LoadVertexes (lump_t *l)
{
	q3dvertex_t	*in;
	vecV_t		*out;
	vec3_t		*nout, *sout, *tout;
	int			i, count, j;
	vec2_t		*lmout, *stout;
	vec4_t *cout;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "CMOD_LoadVertexes: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	if (count > MAX_Q3MAP_VERTEXES)
	{
		Con_Printf (CON_ERROR "Map has too many vertexes\n");
		return false;
	}

	out = Hunk_Alloc ( count*sizeof(*out) );
	stout = Hunk_Alloc ( count*sizeof(*stout) );
	lmout = Hunk_Alloc ( count*sizeof(*lmout) );
	cout = Hunk_Alloc ( count*sizeof(*cout) );
	nout = Hunk_Alloc ( count*sizeof(*nout) );
	sout = Hunk_Alloc ( count*sizeof(*nout) );
	tout = Hunk_Alloc ( count*sizeof(*nout) );
	map_verts = out;
	map_vertstmexcoords = stout;
	map_vertlstmexcoords[0] = lmout;
	map_vertlstmexcoords[1] = lmout;
	map_vertlstmexcoords[2] = lmout;
	map_vertlstmexcoords[3] = lmout;
	map_colors4f_array = cout;
	map_normals_array = nout;
	map_svector_array = sout;
	map_tvector_array = tout;
	numvertexes = count;

	for ( i=0 ; i<count ; i++, in++)
	{
		for ( j=0 ; j < 3 ; j++)
		{
			out[i][j] = LittleFloat ( in->point[j] );
			nout[i][j] = LittleFloat (in->normal[j]);
		}
		for ( j=0 ; j < 2 ; j++)
		{
			stout[i][j] = LittleFloat ( ((float *)in->texcoords)[j] );
			lmout[i][j] = LittleFloat ( ((float *)in->texcoords)[j+2] );
		}
		for ( j=0 ; j < 4 ; j++)
		{
			cout[i][j] = in->color[j]/255.0f;
		}
	}

	return true;
}

qboolean CModRBSP_LoadVertexes (lump_t *l)
{
	rbspvertex_t	*in;
	vecV_t		*out;
	vec3_t		*nout, *sout, *tout;
	int			i, count, j;
	vec2_t		*lmout, *stout;
	vec4_t *cout;
	int sty;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "CMOD_LoadVertexes: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	if (count > MAX_Q3MAP_VERTEXES)
	{
		Con_Printf (CON_ERROR "Map has too many vertexes\n");
		return false;
	}

	out = Hunk_Alloc ( count*sizeof(*out) );
	stout = Hunk_Alloc ( count*sizeof(*stout) );
	lmout = Hunk_Alloc ( MAXLIGHTMAPS*count*sizeof(*lmout) );
	cout = Hunk_Alloc ( count*sizeof(*cout) );
	nout = Hunk_Alloc ( count*sizeof(*nout) );
	sout = Hunk_Alloc ( count*sizeof(*sout) );
	tout = Hunk_Alloc ( count*sizeof(*tout) );
	map_verts = out;
	map_vertstmexcoords = stout;
	for (sty = 0; sty < MAXLIGHTMAPS; sty++)
		map_vertlstmexcoords[sty] = lmout + sty*count;
	map_colors4f_array = cout;
	map_normals_array = nout;
	map_svector_array = sout;
	map_tvector_array = tout;
	numvertexes = count;

	for ( i=0 ; i<count ; i++, in++)
	{
		for ( j=0 ; j < 3 ; j++)
		{
			out[i][j] = LittleFloat ( in->point[j] );
			nout[i][j] = LittleFloat (in->normal[j]);
		}
		for ( j=0 ; j < 2 ; j++)
		{
			stout[i][j] = LittleFloat ( ((float *)in->texcoords)[j] );
			for (sty = 0; sty < MAXLIGHTMAPS; sty++)
				map_vertlstmexcoords[sty][i][j] = LittleFloat ( ((float *)in->texcoords)[j+2*(sty+1)] );
		}
		for ( j=0 ; j < 4 ; j++)
		{
			cout[i][j] = in->color[0][j];
		}
	}

	return true;
}


qboolean CModQ3_LoadIndexes (lump_t *l)
{
	int		i, count;
	int		*in;
	index_t	*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);
	if (count < 1 || count >= MAX_Q3MAP_INDICES || count > MAX_INDICIES)
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: too many indicies in %s: %i\n",
					loadmodel->name, count);
		return false;
	}

	out = Hunk_AllocName ( count*sizeof(*out), loadmodel->name );

	map_surfindexes = out;
	map_numsurfindexes = count;

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

	return true;
}

/*
=================
CMod_LoadFaces
=================
*/
qboolean CModQ3_LoadFaces (lump_t *l)
{
	q3dface_t		*in;
	q3cface_t		*out;
	int			i, count;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	if (count > MAX_MAP_FACES)
	{
		Con_Printf (CON_ERROR "Map has too many faces\n");
		return false;
	}

	out = BZ_Malloc ( count*sizeof(*out) );
	map_faces = out;
	numfaces = count;

	for ( i=0 ; i<count ; i++, in++, out++)
	{
		out->facetype = LittleLong ( in->facetype );
		out->shadernum = LittleLong ( in->shadernum );

		out->numverts = LittleLong ( in->num_vertices );
		out->firstvert = LittleLong ( in->firstvertex );

		out->patch_cp[0] = LittleLong ( in->patchwidth );
		out->patch_cp[1] = LittleLong ( in->patchheight );
	}

	loadmodel->numsurfaces = i;

	return true;
}

qboolean CModRBSP_LoadFaces (lump_t *l)
{
	rbspface_t		*in;
	q3cface_t		*out;
	int			i, count;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	if (count > MAX_MAP_FACES)
	{
		Con_Printf (CON_ERROR "Map has too many faces\n");
		return false;
	}

	out = BZ_Malloc ( count*sizeof(*out) );
	map_faces = out;
	numfaces = count;

	for ( i=0 ; i<count ; i++, in++, out++)
	{
		out->facetype = LittleLong ( in->facetype );
		out->shadernum = LittleLong ( in->shadernum );

		out->numverts = LittleLong ( in->num_vertices );
		out->firstvert = LittleLong ( in->firstvertex );

		out->patch_cp[0] = LittleLong ( in->patchwidth );
		out->patch_cp[1] = LittleLong ( in->patchheight );
	}

	loadmodel->numsurfaces = i;
	return true;
}

#if defined(GLQUAKE) || defined(D3DQUAKE)

/*
=================
Mod_LoadFogs
=================
*/
qboolean CModQ3_LoadFogs (lump_t *l)
{
	dfog_t 	*in;
	mfog_t 	*out;
	q2cbrush_t *brush;
	q2cbrushside_t *visibleside, *brushsides;
	int		i, j, 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 = Hunk_Alloc ( count*sizeof(*out) );

	map_fogs = out;
	map_numfogs = count;

	for ( i=0 ; i<count ; i++, in++, out++)
	{
		if ( LittleLong ( in->visibleSide ) == -1 )
		{
			continue;
		}

		brush = map_brushes + LittleLong ( in->brushNum );
		brushsides = brush->brushside;
		visibleside = brushsides + LittleLong ( in->visibleSide );

		out->visibleplane = visibleside->plane;
		out->shader = R_RegisterShader_Lightmap ( in->shader );
		R_BuildDefaultTexnums(&out->shader->defaulttextures, out->shader);
		out->numplanes = brush->numsides;
		out->planes = Hunk_Alloc ( out->numplanes*sizeof(cplane_t *) );

		for ( j = 0; j < out->numplanes; j++ )
		{
			out->planes[j] = brushsides[j].plane;
		}
	}

	return true;
}

mfog_t *CM_FogForOrigin(vec3_t org)
{
	int i, j;
	mfog_t 	*ret = map_fogs;
	float dot;
	if (!cl.worldmodel || cl.worldmodel->fromgame != fg_quake3)
		return NULL;

	for ( i=0 ; i<map_numfogs ; i++, ret++)
	{
		if (!ret->numplanes)
			continue;
		for (j = 0; j < ret->numplanes; j++)
		{
			dot = DotProduct(ret->planes[j]->normal, org);
			if (dot - ret->planes[j]->dist > 0)
				break;
		}
		if (j == ret->numplanes)
		{
			return ret;
		}
	}

	return NULL;
}

//Convert a patch in to a list of glpolys

#define MAX_ARRAY_VERTS 65535

index_t tempIndexesArray[MAX_ARRAY_VERTS*6];

void GL_SizePatch(mesh_t *mesh, int patchwidth, int patchheight, int numverts, int firstvert)
{
	int patch_cp[2], step[2], size[2], flat[2];
	float subdivlevel;

	patch_cp[0] = patchwidth;
	patch_cp[1] = patchheight;

	if (patch_cp[0] <= 0 || patch_cp[1] <= 0 )
	{
		mesh->numindexes = 0;
		mesh->numvertexes = 0;
		return;
	}

	subdivlevel = r_subdivisions.value;
	if ( subdivlevel < 1 )
		subdivlevel = 1;

// find the degree of subdivision in the u and v directions
	Patch_GetFlatness ( subdivlevel, map_verts[firstvert], sizeof(vecV_t)/sizeof(vec_t), patch_cp, flat );

// allocate space for mesh
	step[0] = (1 << flat[0]);
	step[1] = (1 << flat[1]);
	size[0] = (patch_cp[0] / 2) * step[0] + 1;
	size[1] = (patch_cp[1] / 2) * step[1] + 1;

	mesh->numvertexes = size[0] * size[1];
	mesh->numindexes = (size[0]-1) * (size[1]-1) * 6;
}

//mesh_t *GL_CreateMeshForPatch ( model_t *mod, q3dface_t *surf )
void GL_CreateMeshForPatch (model_t *mod, mesh_t *mesh, int patchwidth, int patchheight, int numverts, int firstvert)
{
    int numindexes, patch_cp[2], step[2], size[2], flat[2], i, u, v, p;
	index_t	*indexes;
	float subdivlevel;
	int sty;

	patch_cp[0] = patchwidth;
	patch_cp[1] = patchheight;

	if (patch_cp[0] <= 0 || patch_cp[1] <= 0 )
	{
		mesh->numindexes = 0;
		mesh->numvertexes = 0;
		return;
	}

	subdivlevel = r_subdivisions.value;
	if ( subdivlevel < 1 )
		subdivlevel = 1;

// find the degree of subdivision in the u and v directions
	Patch_GetFlatness ( subdivlevel, map_verts[firstvert], sizeof(vecV_t)/sizeof(vec_t), patch_cp, flat );

// allocate space for mesh
	step[0] = (1 << flat[0]);
	step[1] = (1 << flat[1]);
	size[0] = (patch_cp[0] / 2) * step[0] + 1;
	size[1] = (patch_cp[1] / 2) * step[1] + 1;
	numverts = size[0] * size[1];

	if ( numverts < 0 || numverts > MAX_ARRAY_VERTS )
	{
		mesh->numindexes = 0;
		mesh->numvertexes = 0;
		return;
	}


	if (mesh->numvertexes != numverts)
	{
		mesh->numindexes = 0;
		mesh->numvertexes = 0;
		return;
	}

// fill in

	Patch_Evaluate ( map_verts[firstvert], patch_cp, step, mesh->xyz_array[0], sizeof(vecV_t)/sizeof(vec_t));
	Patch_Evaluate ( map_colors4f_array[firstvert], patch_cp, step, mesh->colors4f_array[0], 4 );
	Patch_Evaluate ( map_normals_array[firstvert], patch_cp, step, mesh->normals_array[0], 3 );
	Patch_Evaluate ( map_vertstmexcoords[firstvert], patch_cp, step, mesh->st_array[0], 2 );
	for (sty = 0; sty < MAXLIGHTMAPS; sty++)
	{
		if (mesh->lmst_array[sty])
			Patch_Evaluate ( map_vertlstmexcoords[sty][firstvert], patch_cp, step, mesh->lmst_array[sty][0], 2 );
	}

// compute new indexes avoiding adding invalid triangles
	numindexes = 0;
	indexes = tempIndexesArray;
    for (v = 0, i = 0; v < size[1]-1; v++)
	{
		for (u = 0; u < size[0]-1; u++, i += 6)
		{
			indexes[0] = p = v * size[0] + u;
			indexes[1] = p + size[0];
			indexes[2] = p + 1;

//			if ( !VectorEquals(mesh->xyz_array[indexes[0]], mesh->xyz_array[indexes[1]]) &&
//				!VectorEquals(mesh->xyz_array[indexes[0]], mesh->xyz_array[indexes[2]]) &&
//				!VectorEquals(mesh->xyz_array[indexes[1]], mesh->xyz_array[indexes[2]]) )
			{
				indexes += 3;
				numindexes += 3;
			}

			indexes[0] = p + 1;
			indexes[1] = p + size[0];
			indexes[2] = p + size[0] + 1;

//			if ( !VectorEquals(mesh->xyz_array[indexes[0]], mesh->xyz_array[indexes[1]]) &&
//				!VectorEquals(mesh->xyz_array[indexes[0]], mesh->xyz_array[indexes[2]]) &&
//				!VectorEquals(mesh->xyz_array[indexes[1]], mesh->xyz_array[indexes[2]]) )
			{
				indexes += 3;
				numindexes += 3;
			}
		}
	}

// allocate and fill index table
	if (mesh->numindexes != numindexes)
		Con_Printf("DEBUGY\n");

	mesh->numindexes = numindexes;

	memcpy (mesh->indexes, tempIndexesArray, numindexes * sizeof(index_t) );
}

void CModRBSP_BuildSurfMesh(model_t *mod, msurface_t *out, void *cookie)
{
	rbspface_t *in = cookie;
	int idx = out - loadmodel->surfaces;
	int sty;
	in += idx;

	if (LittleLong(in->facetype) == MST_PATCH)
	{
//		out->mesh->numindexes = 0;
//		out->mesh->numvertexes = 0;
		//FIXME
		GL_CreateMeshForPatch(loadmodel, out->mesh, LittleLong(in->patchwidth), LittleLong(in->patchheight), LittleLong(in->num_vertices), LittleLong(in->firstvertex));
//		if (out->mesh)
//		{
//			Mod_AccumulateMeshTextureVectors(out->mesh);
//			Mod_NormaliseTextureVectors(out->mesh->normals_array, out->mesh->snormals_array, out->mesh->tnormals_array, out->mesh->numvertexes);
//		}
	}
	else if (LittleLong(in->facetype) == MST_PLANAR || LittleLong(in->facetype) == MST_TRIANGLE_SOUP)
	{
		unsigned int fv = LittleLong(in->firstvertex), i;
		for (i = 0; i < out->mesh->numvertexes; i++)
		{
			VectorCopy(map_verts[fv + i], out->mesh->xyz_array[i]);
			Vector2Copy(map_vertstmexcoords[fv + i], out->mesh->st_array[i]);
			for (sty = 0; sty < MAXLIGHTMAPS; sty++)
			{
				Vector2Copy(map_vertlstmexcoords[sty][fv + i], out->mesh->lmst_array[sty][i]);
			}
			Vector4Copy(map_colors4f_array[fv + i], out->mesh->colors4f_array[i]);

			VectorCopy(map_normals_array[fv + i], out->mesh->normals_array[i]);
		}
		fv = LittleLong(in->firstindex);
		for (i = 0; i < out->mesh->numindexes; i++)
		{
			out->mesh->indexes[i] = map_surfindexes[fv + i];
		}

/*		numindexes = LittleLong(in->num_indexes);
		numverts = LittleLong(in->num_vertices);
		if (numindexes%3 || numindexes < 0 || numverts < 0)
		{
			Con_Printf(CON_ERROR "mesh indexes should be multiples of 3\n");
			return false;
		}

		out->mesh = Hunk_Alloc(sizeof(mesh_t));
		out->mesh->normals_array= map_normals_array + LittleLong(in->firstvertex);
		out->mesh->snormals_array = map_svector_array + LittleLong(in->firstvertex);
		out->mesh->tnormals_array = map_tvector_array + LittleLong(in->firstvertex);

		out->mesh->colors4f_array	= map_colors4f_array + LittleLong(in->firstvertex);
		out->mesh->indexes		= map_surfindexes + LittleLong(in->firstindex);
		out->mesh->xyz_array	= map_verts + LittleLong(in->firstvertex);
		out->mesh->st_array		= map_vertstmexcoords + LittleLong(in->firstvertex);
		out->mesh->lmst_array	= map_vertlstmexcoords + LittleLong(in->firstvertex);

		out->mesh->numindexes = numindexes;
		out->mesh->numvertexes = numverts;

		if (LittleLong(in->facetype) == MST_PLANAR)
			if (out->mesh->numindexes == (out->mesh->numvertexes-2)*3)
				out->mesh->istrifan = true;

		Mod_AccumulateMeshTextureVectors(out->mesh);
*/
	}
	else
	{
/*		//flare
		int r, g, b;
		extern index_t r_quad_indexes[6];
		static vec2_t	st[4] = {{0,0},{0,1},{1,1},{1,0}};

		mesh = out->mesh = (mesh_t *)Hunk_Alloc(sizeof(mesh_t));
		mesh->xyz_array = (vecV_t *)Hunk_Alloc(sizeof(vecV_t)*4);
		mesh->colors4b_array = (byte_vec4_t *)Hunk_Alloc(sizeof(byte_vec4_t)*4);
		mesh->numvertexes = 4;
		mesh->indexes = r_quad_indexes;
		mesh->st_array = st;
		mesh->numindexes = 6;

		VectorCopy (in->lightmap_origin, mesh->xyz_array[0]);
		VectorCopy (in->lightmap_origin, mesh->xyz_array[1]);
		VectorCopy (in->lightmap_origin, mesh->xyz_array[2]);
		VectorCopy (in->lightmap_origin, mesh->xyz_array[3]);

		r = LittleFloat(in->lightmap_vecs[0][0]) * 255.0f;
		r = bound (0, r, 255);
		g = LittleFloat(in->lightmap_vecs[0][1]) * 255.0f;
		g = bound (0, g, 255);
		b = LittleFloat(in->lightmap_vecs[0][2]) * 255.0f;
		b = bound (0, b, 255);

		mesh->colors4b_array[0][0] = r;
		mesh->colors4b_array[0][1] = g;
		mesh->colors4b_array[0][2] = b;
		mesh->colors4b_array[0][3] = 255;
		Vector4Copy(mesh->colors4b_array[0], mesh->colors4b_array[1]);
		Vector4Copy(mesh->colors4b_array[0], mesh->colors4b_array[2]);
		Vector4Copy(mesh->colors4b_array[0], mesh->colors4b_array[3]);
*/
	}
}

void CModQ3_BuildSurfMesh(model_t *mod, msurface_t *out, void *cookie)
{
	q3dface_t *in = cookie;
	int idx = out - loadmodel->surfaces;
	in += idx;

	if (LittleLong(in->facetype) == MST_PATCH)
	{
//		out->mesh->numindexes = 0;
//		out->mesh->numvertexes = 0;
		//FIXME
		GL_CreateMeshForPatch(loadmodel, out->mesh, LittleLong(in->patchwidth), LittleLong(in->patchheight), LittleLong(in->num_vertices), LittleLong(in->firstvertex));
//		if (out->mesh)
//		{
//			Mod_AccumulateMeshTextureVectors(out->mesh);
//			Mod_NormaliseTextureVectors(out->mesh->normals_array, out->mesh->snormals_array, out->mesh->tnormals_array, out->mesh->numvertexes);
//		}
	}
	else if (LittleLong(in->facetype) == MST_PLANAR || LittleLong(in->facetype) == MST_TRIANGLE_SOUP)
	{
		unsigned int fv = LittleLong(in->firstvertex), i;
		for (i = 0; i < out->mesh->numvertexes; i++)
		{
			VectorCopy(map_verts[fv + i], out->mesh->xyz_array[i]);
			Vector2Copy(map_vertstmexcoords[fv + i], out->mesh->st_array[i]);
			Vector2Copy(map_vertlstmexcoords[0][fv + i], out->mesh->lmst_array[0][i]);
			Vector4Copy(map_colors4f_array[fv + i], out->mesh->colors4f_array[i]);

			VectorCopy(map_normals_array[fv + i], out->mesh->normals_array[i]);
		}
		fv = LittleLong(in->firstindex);
		for (i = 0; i < out->mesh->numindexes; i++)
		{
			out->mesh->indexes[i] = map_surfindexes[fv + i];
		}

/*		numindexes = LittleLong(in->num_indexes);
		numverts = LittleLong(in->num_vertices);
		if (numindexes%3 || numindexes < 0 || numverts < 0)
		{
			Con_Printf(CON_ERROR "mesh indexes should be multiples of 3\n");
			return false;
		}

		out->mesh = Hunk_Alloc(sizeof(mesh_t));
		out->mesh->normals_array= map_normals_array + LittleLong(in->firstvertex);
		out->mesh->snormals_array = map_svector_array + LittleLong(in->firstvertex);
		out->mesh->tnormals_array = map_tvector_array + LittleLong(in->firstvertex);

		out->mesh->colors4f_array	= map_colors4f_array + LittleLong(in->firstvertex);
		out->mesh->indexes		= map_surfindexes + LittleLong(in->firstindex);
		out->mesh->xyz_array	= map_verts + LittleLong(in->firstvertex);
		out->mesh->st_array		= map_vertstmexcoords + LittleLong(in->firstvertex);
		out->mesh->lmst_array	= map_vertlstmexcoords + LittleLong(in->firstvertex);

		out->mesh->numindexes = numindexes;
		out->mesh->numvertexes = numverts;

		if (LittleLong(in->facetype) == MST_PLANAR)
			if (out->mesh->numindexes == (out->mesh->numvertexes-2)*3)
				out->mesh->istrifan = true;

		Mod_AccumulateMeshTextureVectors(out->mesh);
*/
	}
	else
	{
/*		//flare
		int r, g, b;
		extern index_t r_quad_indexes[6];
		static vec2_t	st[4] = {{0,0},{0,1},{1,1},{1,0}};

		mesh = out->mesh = (mesh_t *)Hunk_Alloc(sizeof(mesh_t));
		mesh->xyz_array = (vecV_t *)Hunk_Alloc(sizeof(vecV_t)*4);
		mesh->colors4b_array = (byte_vec4_t *)Hunk_Alloc(sizeof(byte_vec4_t)*4);
		mesh->numvertexes = 4;
		mesh->indexes = r_quad_indexes;
		mesh->st_array = st;
		mesh->numindexes = 6;

		VectorCopy (in->lightmap_origin, mesh->xyz_array[0]);
		VectorCopy (in->lightmap_origin, mesh->xyz_array[1]);
		VectorCopy (in->lightmap_origin, mesh->xyz_array[2]);
		VectorCopy (in->lightmap_origin, mesh->xyz_array[3]);

		r = LittleFloat(in->lightmap_vecs[0][0]) * 255.0f;
		r = bound (0, r, 255);
		g = LittleFloat(in->lightmap_vecs[0][1]) * 255.0f;
		g = bound (0, g, 255);
		b = LittleFloat(in->lightmap_vecs[0][2]) * 255.0f;
		b = bound (0, b, 255);

		mesh->colors4b_array[0][0] = r;
		mesh->colors4b_array[0][1] = g;
		mesh->colors4b_array[0][2] = b;
		mesh->colors4b_array[0][3] = 255;
		Vector4Copy(mesh->colors4b_array[0], mesh->colors4b_array[1]);
		Vector4Copy(mesh->colors4b_array[0], mesh->colors4b_array[2]);
		Vector4Copy(mesh->colors4b_array[0], mesh->colors4b_array[3]);
*/
	}


}

qboolean CModQ3_LoadRFaces (lump_t *l)
{
	q3dface_t *in;
	msurface_t *out;
	mplane_t *pl;

	int count;
	int surfnum;

	int fv;
	int sty; 

	mesh_t *mesh;

	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 = Hunk_AllocName ( count*sizeof(*out), loadmodel->name );
	pl = Hunk_AllocName (count*sizeof(*pl), loadmodel->name);//create a new array of planes for speed.
	mesh = Hunk_AllocName (count*sizeof(*mesh), loadmodel->name);

	loadmodel->surfaces = out;
	loadmodel->numsurfaces = count;

	for (surfnum = 0; surfnum < count; surfnum++, out++, in++, pl++)
	{
		out->plane = pl;
		out->texinfo = loadmodel->texinfo + LittleLong(in->shadernum);
		out->lightmaptexturenums[0] = LittleLong(in->lightmapnum);
		out->light_s[0] = LittleLong(in->lightmap_x);
		out->light_t[0] = LittleLong(in->lightmap_y);
		out->styles[0] = 255;
		for (sty = 1; sty < MAXLIGHTMAPS; sty++)
		{
			out->styles[sty] = 255;
			out->lightmaptexturenums[sty] = -1;
		}
		out->extents[0] = (LittleLong(in->lightmap_width)-1)<<4;
		out->extents[1] = (LittleLong(in->lightmap_height)-1)<<4;
		out->samples=NULL;

		if (loadmodel->lightmaps.count < out->lightmaptexturenums[0]+1)
			loadmodel->lightmaps.count = out->lightmaptexturenums[0]+1;

		fv = LittleLong(in->firstvertex);
		{
			vec3_t v[3];
			VectorCopy(map_verts[fv+0], v[0]);
			VectorCopy(map_verts[fv+1], v[1]);
			VectorCopy(map_verts[fv+2], v[2]);
			PlaneFromPoints(v, pl);
			CategorizePlane(pl);
		}

		if (map_surfaces[LittleLong(in->shadernum)].c.value == 0 || map_surfaces[LittleLong(in->shadernum)].c.value & Q3CONTENTS_TRANSLUCENT)
				//q3dm10's thingie is 0
			out->flags |= SURF_DRAWALPHA;

		if (loadmodel->texinfo[LittleLong(in->shadernum)].flags & TI_SKY)
			out->flags |= SURF_DRAWSKY;

		if (!out->texinfo->texture->shader)
		{
			extern cvar_t r_vertexlight;
			if (LittleLong(in->facetype) == MST_FLARE)
				out->texinfo->texture->shader = R_RegisterShader_Flare (out->texinfo->texture->name);
			else if (LittleLong(in->facetype) == MST_TRIANGLE_SOUP || r_vertexlight.value)
				out->texinfo->texture->shader = R_RegisterShader_Vertex (out->texinfo->texture->name);
			else
				out->texinfo->texture->shader = R_RegisterShader_Lightmap(out->texinfo->texture->name);

			R_BuildDefaultTexnums(&out->texinfo->texture->shader->defaulttextures, out->texinfo->texture->shader);
		}

		if (LittleLong(in->fognum) == -1 || !map_numfogs)
			out->fog = NULL;
		else
			out->fog = map_fogs + LittleLong(in->fognum);

		if (map_surfaces[LittleLong(in->shadernum)].c.flags & (Q3SURF_NODRAW | Q3SURF_SKIP))
		{
			out->mesh = &mesh[surfnum];
			out->mesh->numindexes = 0;
			out->mesh->numvertexes = 0;
		}
		else if (LittleLong(in->facetype) == MST_PATCH)
		{
			out->mesh = &mesh[surfnum];
			GL_SizePatch(out->mesh, LittleLong(in->patchwidth), LittleLong(in->patchheight), LittleLong(in->num_vertices), LittleLong(in->firstvertex));
		}
		else if (LittleLong(in->facetype) == MST_PLANAR || LittleLong(in->facetype) == MST_TRIANGLE_SOUP)
		{
			out->mesh = &mesh[surfnum];
			out->mesh->numindexes = LittleLong(in->num_indexes);
			out->mesh->numvertexes = LittleLong(in->num_vertices);
/*
			Mod_AccumulateMeshTextureVectors(out->mesh);
*/
		}
		else
		{
			out->mesh = &mesh[surfnum];
			out->mesh->numindexes = 6;
			out->mesh->numvertexes = 4;
		}
	}

	Mod_NormaliseTextureVectors(map_normals_array, map_svector_array, map_tvector_array, numvertexes);

	Mod_SortShaders();

	return true;
}

qboolean CModRBSP_LoadRFaces (lump_t *l)
{
	rbspface_t *in;
	msurface_t *out;
	mplane_t *pl;

	int count;
	int surfnum;

	int fv;
	int j;

	mesh_t *mesh;


	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 = Hunk_AllocName ( count*sizeof(*out), loadmodel->name );
	pl = Hunk_AllocName (count*sizeof(*pl), loadmodel->name);//create a new array of planes for speed.
	mesh = Hunk_AllocName (count*sizeof(*mesh), loadmodel->name);

	loadmodel->surfaces = out;
	loadmodel->numsurfaces = count;

	for (surfnum = 0; surfnum < count; surfnum++, out++, in++, pl++)
	{
		out->plane = pl;
		out->texinfo = loadmodel->texinfo + LittleLong(in->shadernum);
		in->facetype = LittleLong(in->facetype);
		for (j = 0; j < 4 && j < MAXLIGHTMAPS; j++)
		{
			out->lightmaptexturenums[j] = LittleLong(in->lightmapnum[j]);
			out->light_s[j] = LittleLong(in->lightmap_offs[0][j]);
			out->light_t[j] = LittleLong(in->lightmap_offs[1][j]);
			out->styles[j] = in->lm_styles[j];

			if (loadmodel->lightmaps.count < out->lightmaptexturenums[j]+1)
				loadmodel->lightmaps.count = out->lightmaptexturenums[j]+1;
		}
		out->extents[0] = (LittleLong(in->lightmap_width)-1)<<4;
		out->extents[1] = (LittleLong(in->lightmap_height)-1)<<4;
		out->samples=NULL;

		fv = LittleLong(in->firstvertex);
		{
			vec3_t v[3];
			VectorCopy(map_verts[fv+0], v[0]);
			VectorCopy(map_verts[fv+1], v[1]);
			VectorCopy(map_verts[fv+2], v[2]);
			PlaneFromPoints(v, pl);
			CategorizePlane(pl);
		}

		if (map_surfaces[in->shadernum].c.value == 0 || map_surfaces[in->shadernum].c.value & Q3CONTENTS_TRANSLUCENT)
				//q3dm10's thingie is 0
			out->flags |= SURF_DRAWALPHA;

		if (loadmodel->texinfo[in->shadernum].flags & TI_SKY)
			out->flags |= SURF_DRAWSKY;

		if (!out->texinfo->texture->shader)
		{
			extern cvar_t r_vertexlight;
			if (in->facetype == MST_FLARE)
				out->texinfo->texture->shader = R_RegisterShader_Flare (out->texinfo->texture->name);
			else if (in->facetype == MST_TRIANGLE_SOUP || r_vertexlight.value)
				out->texinfo->texture->shader = R_RegisterShader_Vertex (out->texinfo->texture->name);
			else
				out->texinfo->texture->shader = R_RegisterShader_Lightmap(out->texinfo->texture->name);

			R_BuildDefaultTexnums(&out->texinfo->texture->shader->defaulttextures, out->texinfo->texture->shader);
		}

		if (in->fognum < 0 || in->fognum >= map_numfogs)
			out->fog = NULL;
		else
			out->fog = map_fogs + in->fognum;

		if (map_surfaces[LittleLong(in->shadernum)].c.flags & (Q3SURF_NODRAW | Q3SURF_SKIP))
		{
			out->mesh = &mesh[surfnum];
			out->mesh->numindexes = 0;
			out->mesh->numvertexes = 0;
		}
		else if (LittleLong(in->facetype) == MST_PATCH)
		{
			out->mesh = &mesh[surfnum];
			GL_SizePatch(out->mesh, LittleLong(in->patchwidth), LittleLong(in->patchheight), LittleLong(in->num_vertices), LittleLong(in->firstvertex));
		}
		else if (LittleLong(in->facetype) == MST_PLANAR || LittleLong(in->facetype) == MST_TRIANGLE_SOUP)
		{
			out->mesh = &mesh[surfnum];
			out->mesh->numindexes = LittleLong(in->num_indexes);
			out->mesh->numvertexes = LittleLong(in->num_vertices);
/*
			Mod_AccumulateMeshTextureVectors(out->mesh);
*/
		}
		else
		{
			out->mesh = &mesh[surfnum];
			out->mesh->numindexes = 6;
			out->mesh->numvertexes = 4;
		}
	}

	return true;
}
#endif

qboolean CModQ3_LoadLeafFaces (lump_t *l)
{
	int		i, j, count;
	int		*in;
	int		*out;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	if (count > MAX_Q2MAP_LEAFFACES)
	{
		Con_Printf (CON_ERROR "Map has too many leaffaces\n");
		return false;
	}

	out = BZ_Malloc ( count*sizeof(*out) );
	map_leaffaces = out;
	numleaffaces = count;

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

		if (j < 0 ||  j >= numfaces)
		{
			Con_Printf (CON_ERROR "CMod_LoadLeafFaces: bad surface number\n");
			return false;
		}

		out[i] = j;
	}

	return true;
}

qboolean CModQ3_LoadNodes (lump_t *l)
{
	int			i, j, count, p;
	q3dnode_t	*in;
	mnode_t 	*out;
	//dnode_t

	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 = Hunk_AllocName ( count*sizeof(*out), loadname);

	if (count > MAX_MAP_NODES)
	{
		Con_Printf (CON_ERROR "Too many nodes on map\n");
		return false;
	}

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

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

		p = LittleLong(in->plane);
		out->plane = loadmodel->planes + p;

		out->firstsurface = 0;//LittleShort (in->firstface);
		out->numsurfaces = 0;//LittleShort (in->numfaces);

		out->contents = -1;

		for (j=0 ; j<2 ; j++)
		{
			p = LittleLong (in->children[j]);
			out->childnum[j] = p;
			if (p >= 0)
			{
				out->children[j] = loadmodel->nodes + p;
			}
			else
				out->children[j] = (mnode_t *)(loadmodel->leafs + (-1 - p));
		}
	}

	CMod_SetParent (loadmodel->nodes, NULL);	// sets nodes and leafs

	return true;
}

qboolean CModQ3_LoadBrushes (lump_t *l)
{
	q3dbrush_t	*in;
	q2cbrush_t	*out;
	int			i, count;
	int			shaderref;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	if (count > MAX_Q2MAP_BRUSHES)
	{
		Con_Printf (CON_ERROR "Map has too many brushes");
		return false;
	}

	out = map_brushes;

	numbrushes = count;

	for (i=0 ; i<count ; i++, out++, in++)
	{
		shaderref = LittleLong ( in->shadernum );
		out->contents = map_surfaces[shaderref].c.value;
		out->brushside = &map_brushsides[LittleLong ( in->firstside )];
		out->numsides = LittleLong ( in->num_sides );
	}

	return true;
}

qboolean CModQ3_LoadLeafs (lump_t *l)
{
	int			i, j;
	mleaf_t		*out;
	q3dleaf_t 	*in;
	int			count;
	q2cbrush_t	*brush;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	if (count < 1)
	{
		Con_Printf (CON_ERROR "Map with no leafs\n");
		return false;
	}
	// need to save space for box planes

	if (count > MAX_MAP_LEAFS)
	{
		Con_Printf (CON_ERROR "Too many leaves on map");
		return false;
	}

	out = map_leafs;
	numleafs = count;
	numclusters = 0;

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

	emptyleaf = -1;

	for ( i=0 ; i<count ; i++, in++, out++)
	{
		for (j = 0; j < 3; j++)
		{
			out->minmaxs[0+j] = LittleLong(in->mins[j]);
			out->minmaxs[3+j] = LittleLong(in->maxs[j]);
		}
		out->cluster = LittleLong ( in->cluster );
		out->area = LittleLong ( in->area ) + 1;
		out->firstleafface = LittleLong ( in->firstleafsurface );
		out->numleaffaces = LittleLong ( in->num_leafsurfaces );
		out->contents = 0;
		out->firstleafbrush = LittleLong ( in->firstleafbrush );
		out->numleafbrushes = LittleLong ( in->num_leafbrushes );

		out->firstmarksurface = loadmodel->marksurfaces +
			LittleLong(in->firstleafsurface);
		out->nummarksurfaces = LittleLong(in->num_leafsurfaces);

		if (out->minmaxs[0] > out->minmaxs[3+0] || out->minmaxs[1] > out->minmaxs[3+1] ||
			out->minmaxs[2] > out->minmaxs[3+2] || VectorEquals (out->minmaxs, out->minmaxs+3))
		{
			out->nummarksurfaces = 0;
		}

		for ( j=0 ; j<out->numleafbrushes ; j++)
		{
			brush = &map_brushes[map_leafbrushes[out->firstleafbrush + j]];
			out->contents |= brush->contents;
		}

		if ( out->area >= numareas ) {
			numareas = out->area + 1;
		}

		if ( !out->contents ) {
			emptyleaf = i;
		}
	}

	// if map doesn't have an empty leaf - force one
	if ( emptyleaf == -1 ) {
		if (numleafs >= MAX_MAP_LEAFS-1)
		{
			Con_Printf (CON_ERROR "Map does not have an empty leaf\n");
			return false;
		}

		out->cluster = -1;
		out->area = -1;
		out->numleafbrushes = 0;
		out->contents = 0;
		out->firstleafbrush = 0;

		Con_DPrintf ( "Forcing an empty leaf: %i\n", numleafs );
		emptyleaf = numleafs++;
	}

	return true;
}

qboolean CModQ3_LoadPlanes (lump_t *l)
{
	int			i, j;
	mplane_t	*out;
	Q3PLANE_t 	*in;
	int			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 = map_planes;//Hunk_AllocName ( count*2*sizeof(*out), loadname);

	if (count > MAX_MAP_PLANES)
	{
		Con_Printf (CON_ERROR "Too many planes on map\n");
		return false;
	}

	numplanes = count;

	loadmodel->planes = out;
	loadmodel->numplanes = count;

	for ( i=0 ; i<count ; i++, in++, out++)
	{
		for (j=0 ; j<3 ; j++)
		{
			out->normal[j] = LittleFloat (in->n[j]);
		}
		out->dist = LittleFloat (in->d);

		CategorizePlane(out);
	}

	return true;
}

qboolean CModQ3_LoadLeafBrushes (lump_t *l)
{
	int			i;
	int	*out;
	int 	*in;
	int			count;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	if (count < 1)
	{
		Con_Printf (CON_ERROR "Map with no leafbrushes\n");
		return false;
	}
	// need to save space for box planes
	if (count > MAX_Q2MAP_LEAFBRUSHES)
	{
		Con_Printf (CON_ERROR "Map has too many leafbrushes\n");
		return false;
	}

	out = map_leafbrushes;
	numleafbrushes = count;

	for ( i=0 ; i<count ; i++, in++, out++)
		*out = LittleLong (*in);

	return true;
}

qboolean CModQ3_LoadBrushSides (lump_t *l)
{
	int			i, j;
	q2cbrushside_t	*out;
	q3dbrushside_t 	*in;
	int			count;
	int			num;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	// need to save space for box planes
	if (count > MAX_Q2MAP_BRUSHSIDES)
	{
		Con_Printf (CON_ERROR "Map has too many planes\n");
		return false;
	}

	out = map_brushsides;
	numbrushsides = count;

	for ( i=0 ; i<count ; i++, in++, out++)
	{
		num = LittleLong (in->planenum);
		out->plane = &map_planes[num];
		j = LittleLong (in->texinfo);
		if (j >= numtexinfo)
		{
			Con_Printf (CON_ERROR "Bad brushside texinfo\n");
			return false;
		}
		out->surface = &map_surfaces[j];
	}

	return true;
}

qboolean CModRBSP_LoadBrushSides (lump_t *l)
{
	int			i, j;
	q2cbrushside_t	*out;
	rbspbrushside_t 	*in;
	int			count;
	int			num;

	in = (void *)(cmod_base + l->fileofs);
	if (l->filelen % sizeof(*in))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size\n");
		return false;
	}
	count = l->filelen / sizeof(*in);

	// need to save space for box planes
	if (count > MAX_Q2MAP_BRUSHSIDES)
	{
		Con_Printf (CON_ERROR "Map has too many planes\n");
		return false;
	}

	out = map_brushsides;
	numbrushsides = count;

	for ( i=0 ; i<count ; i++, in++, out++)
	{
		num = LittleLong (in->planenum);
		out->plane = &map_planes[num];
		j = LittleLong (in->texinfo);
		if (j >= numtexinfo)
		{
			Con_Printf (CON_ERROR "Bad brushside texinfo\n");
			return false;
		}
		out->surface = &map_surfaces[j];
	}

	return true;
}

qboolean CModQ3_LoadVisibility (lump_t *l)
{
	if (l->filelen == 0)
	{
		int i;
		numclusters = 0;
		for (i = 0; i < loadmodel->numleafs; i++)
			if (numclusters <= loadmodel->leafs[i].cluster)
				numclusters = loadmodel->leafs[i].cluster+1;

		numclusters++;

		map_q3pvs = Hunk_Alloc(sizeof(*map_q3pvs) + (numclusters+7)/8 * numclusters);
		memset (map_q3pvs, 0xff, sizeof(*map_q3pvs) + (numclusters+7)/8 * numclusters);
		map_q3pvs->numclusters = numclusters;
		numvisibility = 0;
		map_q3pvs->rowsize = (map_q3pvs->numclusters+7)/8;
	}
	else
	{
		numvisibility = l->filelen;
		if (l->filelen > MAX_Q2MAP_VISIBILITY)
		{
			Con_Printf (CON_ERROR "Map has too large visibility lump\n");
			return false;
		}

		loadmodel->vis = (q2dvis_t *)map_q3pvs;

		memcpy (map_visibility, cmod_base + l->fileofs, l->filelen);

		numclusters = map_q3pvs->numclusters = LittleLong (map_q3pvs->numclusters);
		map_q3pvs->rowsize = LittleLong (map_q3pvs->rowsize);
	}

	return true;
}

#ifndef SERVERONLY
qboolean CModQ3_LoadLightgrid (lump_t *l)
{
	dq3gridlight_t 	*in;
	dq3gridlight_t 	*out;
	q3lightgridinfo_t *grid;
	int	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);
	grid = Hunk_AllocName (sizeof(q3lightgridinfo_t) + count*sizeof(*out), loadmodel->name );
	grid->lightgrid = (dq3gridlight_t*)(grid+1);
	out = grid->lightgrid;

	loadmodel->lightgrid = grid;
	grid->numlightgridelems = count;

	// lightgrid is all 8 bit
	memcpy ( out, in, count*sizeof(*out) );

	return true;
}
qboolean CModRBSP_LoadLightgrid (lump_t *elements, lump_t *indexes)
{
	unsigned short	*iin;
	rbspgridlight_t	*ein;
	unsigned short	*iout;
	rbspgridlight_t	*eout;
	q3lightgridinfo_t *grid;
	int	ecount;
	int icount;

	int i;

	ein = (void *)(mod_base + elements->fileofs);
	iin = (void *)(mod_base + indexes->fileofs);
	if (indexes->filelen % sizeof(*iin) || elements->filelen % sizeof(*ein))
	{
		Con_Printf (CON_ERROR "MOD_LoadBmodel: funny lump size in %s\n",loadmodel->name);
		return false;
	}
	icount = indexes->filelen / sizeof(*iin);
	ecount = elements->filelen / sizeof(*ein);

	grid = Hunk_AllocName (sizeof(q3lightgridinfo_t) + ecount*sizeof(*eout) + icount*sizeof(*iout), loadmodel->name );
	grid->rbspelements = (rbspgridlight_t*)((char *)grid + sizeof(q3lightgridinfo_t));
	grid->rbspindexes = (unsigned short*)((char *)grid + sizeof(q3lightgridinfo_t) + ecount*sizeof(*eout));
	eout = grid->rbspelements;
	iout = grid->rbspindexes;

	loadmodel->lightgrid = grid;

	grid->numlightgridelems = icount;

	// elements are all 8 bit
	memcpy ( eout, ein, ecount*sizeof(*eout) );

	for (i = 0; i < icount; i++)
		iout[i] = LittleShort(iin[i]);

	return true;
}
#endif


#ifndef SERVERONLY
qbyte *ReadPCXPalette(qbyte *buf, int len, qbyte *out);
int CM_GetQ2Palette (void)
{
	char *f;
	FS_LoadFile("pics/colormap.pcx", (void**)&f);
	if (!f)
	{
		Con_Printf (CON_WARNING "Couldn't find pics/colormap.pcx\n");
		return -1;
	}
	if (!ReadPCXPalette(f, com_filesize, d_q28to24table))
	{
		Con_Printf (CON_WARNING "Couldn't read pics/colormap.pcx\n");
		FS_FreeFile(f);
		return -1;
	}
	FS_FreeFile(f);


#if defined(GLQUAKE) || defined(D3DQUAKE)
	{
		float	inf;
		qbyte	palette[768];
		qbyte *pal;
		int		i;

		pal = d_q28to24table;

		for (i=0 ; i<768 ; i++)
		{
			inf = ((pal[i]+1)/256.0)*255 + 0.5;
			if (inf < 0)
				inf = 0;
			if (inf > 255)
				inf = 255;
			palette[i] = inf;
		}

		memcpy (d_q28to24table, palette, sizeof(palette));
	}
#endif
	return 0;
}
#endif

void CM_OpenAllPortals(char *ents)	//this is a compleate hack. About as compleate as possible.
{	//q2 levels contain a thingie called area portals. Basically, doors can seperate two areas and
	//the engine knows when this portal is open, and weather to send ents from both sides of the door
	//or not. It's not just ents, but also walls. We want to just open them by default and hope the
	//progs knows how to close them.

	char style[8];
	char name[64];

	if (!map_autoopenportals.value)
		return;

	while(*ents)
	{
		if (*ents == '{')	//an entity
		{
			ents++;
			*style = '\0';
			*name = '\0';
			while (*ents)
			{
				ents = COM_Parse(ents);

				if (!strcmp(com_token, "classname"))
				{
					ents = COM_ParseOut(ents, name, sizeof(name));
				}
				else if (!strcmp(com_token, "style"))
				{
					ents = COM_ParseOut(ents, style, sizeof(style));
				}
				else if (*com_token == '}')
					break;
				else
					ents = COM_Parse(ents);	//other field
				ents++;
			}

			if (!strcmp(name, "func_areaportal"))
			{
				CMQ2_SetAreaPortalState(atoi(style), true);
			}
		}

		ents++;
	}
}


#ifndef CLIENTONLY
void CMQ3_CalcPHS (void)
{
	int		rowbytes, rowwords;
	int		i, j, k, l, index;
	int		bitbyte;
	unsigned	*dest, *src;
	qbyte	*scan;
	int		count, vcount;
	int		numclusters;

	Con_DPrintf ("Building PHS...\n");

	map_q3phs = Hunk_Alloc(sizeof(*map_q3phs) + (map_q3pvs->numclusters+7)/8 * map_q3pvs->numclusters);

	rowwords = map_q3pvs->rowsize / sizeof(long);
	rowbytes = map_q3pvs->rowsize;

	memset ( map_q3phs, 0, sizeof(*map_q3phs) + (map_q3pvs->numclusters+7)/8 * map_q3pvs->numclusters );

	map_q3phs->rowsize = map_q3pvs->rowsize;
	map_q3phs->numclusters = numclusters = map_q3pvs->numclusters;
	if (!numclusters)
		return;

	vcount = 0;
	for (i=0 ; i<numclusters ; i++)
	{
		scan = CM_ClusterPVS (sv.world.worldmodel, i, NULL, 0);
		for (j=0 ; j<numclusters ; j++)
		{
			if ( scan[j>>3] & (1<<(j&7)) )
			{
				vcount++;
			}
		}
	}

	count = 0;
	scan = (qbyte *)map_q3pvs->data;
	dest = (unsigned *)((qbyte *)map_q3phs + 8);

	for (i=0 ; i<numclusters ; i++, dest += rowwords, scan += rowbytes)
	{
		memcpy (dest, scan, rowbytes);
		for (j=0 ; j<rowbytes ; j++)
		{
			bitbyte = scan[j];
			if (!bitbyte)
				continue;
			for (k=0 ; k<8 ; k++)
			{
				if (! (bitbyte & (1<<k)) )
					continue;
				// OR this pvs row into the phs
				index = (j<<3) + k;
//				if (index >= numclusters)
//					Host_Error ("CM_CalcPHS: Bad bit in PVS");	// pad bits should be 0
				src = (unsigned *)((qbyte*)map_q3pvs->data) + index*rowwords;
				for (l=0 ; l<rowwords ; l++)
					dest[l] |= src[l];
			}
		}
		for (j=0 ; j<numclusters ; j++)
			if ( ((qbyte *)dest)[j>>3] & (1<<(j&7)) )
				count++;
	}

	Con_DPrintf ("Average clusters visible / hearable / total: %i / %i / %i\n"
		, vcount/numclusters, count/numclusters, numclusters);
}
#endif

qbyte *CM_LeafnumPVS (model_t *model, int leafnum, qbyte *buffer, unsigned int buffersize)
{
	return CM_ClusterPVS(model, CM_LeafCluster(model, leafnum), buffer, buffersize);
}

#ifndef SERVERONLY
#define GLQ2BSP_LightPointValues GLQ1BSP_LightPointValues
#define SWQ2BSP_LightPointValues SWQ1BSP_LightPointValues

extern int	r_dlightframecount;
void Q2BSP_MarkLights (dlight_t *light, int bit, mnode_t *node)
{
	mplane_t	*splitplane;
	float		dist;
	msurface_t	*surf;
	int			i;

	if (node->contents != -1)
	{
		mleaf_t *leaf = (mleaf_t *)node;
		msurface_t **mark;

		i = leaf->nummarksurfaces;
		mark = leaf->firstmarksurface;
		while(i--!=0)
		{
			surf = *mark++;
			if (surf->dlightframe != r_dlightframecount)
			{
				surf->dlightbits = 0;
				surf->dlightframe = r_dlightframecount;
			}
			surf->dlightbits |= bit;
		}
		return;
	}

	splitplane = node->plane;
	dist = DotProduct (light->origin, splitplane->normal) - splitplane->dist;

	if (dist > light->radius)
	{
		Q2BSP_MarkLights (light, bit, node->children[0]);
		return;
	}
	if (dist < -light->radius)
	{
		Q2BSP_MarkLights (light, bit, node->children[1]);
		return;
	}

// mark the polygons
	surf = cl.worldmodel->surfaces + node->firstsurface;
	for (i=0 ; i<node->numsurfaces ; i++, surf++)
	{
		if (surf->dlightframe != r_dlightframecount)
		{
			surf->dlightbits = 0;
			surf->dlightframe = r_dlightframecount;
		}
		surf->dlightbits |= bit;
	}

	Q2BSP_MarkLights (light, bit, node->children[0]);
	Q2BSP_MarkLights (light, bit, node->children[1]);
}

#ifndef SERVERONLY
void GLR_Q2BSP_StainNode (mnode_t *node, float *parms)
{
	mplane_t	*splitplane;
	float		dist;
	msurface_t	*surf;
	int			i;

	if (node->contents != -1)
		return;

	splitplane = node->plane;
	dist = DotProduct ((parms+1), splitplane->normal) - splitplane->dist;

	if (dist > (*parms))
	{
		GLR_Q2BSP_StainNode (node->children[0], parms);
		return;
	}
	if (dist < (-*parms))
	{
		GLR_Q2BSP_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_DONTWARP|SURF_PLANEBACK))
			continue;
		Surf_StainSurf(surf, parms);
	}

	GLR_Q2BSP_StainNode (node->children[0], parms);
	GLR_Q2BSP_StainNode (node->children[1], parms);
}
#endif

#endif

void GLQ2BSP_LightPointValues(model_t *mod, vec3_t point, vec3_t res_diffuse, vec3_t res_ambient, vec3_t res_dir);
void SWQ2BSP_LightPointValues(model_t *mod, vec3_t point, vec3_t res_diffuse, vec3_t res_ambient, vec3_t res_dir);

/*
==================
CM_LoadMap

Loads in the map and all submodels
==================
*/
cmodel_t *CM_LoadMap (char *name, char *filein, qboolean clientload, unsigned *checksum)
{
	unsigned		*buf;
	int				i,j;
	q2dheader_t		header;
	int				length;
	static unsigned	last_checksum;
	qboolean noerrors = true;
	int start;

	void (*buildmeshes)(model_t *mod, msurface_t *surf, void *cookie) = NULL;
	void *buildcookie = NULL;

	// free old stuff
	numplanes = 0;
	numleafs = 0;
	numcmodels = 0;
	numvisibility = 0;
	numentitychars = 0;
	map_entitystring = NULL;

	loadmodel->type = mod_brush;

	if (!name || !name[0])
	{
		numleafs = 1;
		numclusters = 1;
		numareas = 1;
		*checksum = 0;
		return &map_cmodels[0];			// cinematic servers won't have anything at all
	}

	//
	// load the file
	//
	buf = (unsigned	*)filein;
	length = com_filesize;
	if (!buf)
	{
		Con_Printf (CON_ERROR "Couldn't load %s\n", name);
		return NULL;
	}

	last_checksum = LittleLong (Com_BlockChecksum (buf, length));
	*checksum = last_checksum;

	header = *(q2dheader_t *)(buf);
	header.ident = LittleLong(header.ident);
	header.version = LittleLong(header.version);

	cmod_base = mod_base = (qbyte *)buf;
	start = Hunk_LowMark();

	if (header.ident == (('F'<<0)+('B'<<8)+('S'<<16)+('P'<<24)))
	{
		loadmodel->lightmaps.width = 512;
		loadmodel->lightmaps.height = 512;
	}
	else
	{
		loadmodel->lightmaps.width = 128;
		loadmodel->lightmaps.height = 128;
	}

	switch(header.version)
	{
	default:
		Con_Printf (CON_ERROR "Quake 2 or Quake 3 based BSP with unknown header (%s: %i should be %i or %i)\n"
			, name, header.version, Q2BSPVERSION, Q3BSPVERSION);
		return NULL;
		break;
#if 1
	case 1: //rbsp/fbsp
	case Q3BSPVERSION+1:	//rtcw
	case Q3BSPVERSION:
		mapisq3 = true;
		loadmodel->fromgame = fg_quake3;
		for (i=0 ; i<Q3LUMPS_TOTAL ; i++)
		{
			header.lumps[i].filelen = LittleLong (header.lumps[i].filelen);
			header.lumps[i].fileofs = LittleLong (header.lumps[i].fileofs);
		}
		/*
		#ifndef SERVERONLY
			GLMod_LoadVertexes		(&header.lumps[Q3LUMP_DRAWVERTS]);
//			GLMod_LoadEdges			(&header.lumps[Q3LUMP_EDGES]);
//			GLMod_LoadSurfedges		(&header.lumps[Q3LUMP_SURFEDGES]);
			GLMod_LoadLighting		(&header.lumps[Q3LUMP_LIGHTMAPS]);
		#endif
			CModQ3_LoadShaders		(&header.lumps[Q3LUMP_SHADERS]);
			CModQ3_LoadPlanes		(&header.lumps[Q3LUMP_PLANES]);
			CModQ3_LoadLeafBrushes	(&header.lumps[Q3LUMP_LEAFBRUSHES]);
			CModQ3_LoadBrushes		(&header.lumps[Q3LUMP_BRUSHES]);
			CModQ3_LoadBrushSides	(&header.lumps[Q3LUMP_BRUSHSIDES]);
		#ifndef SERVERONLY
			CMod_LoadTexInfo		(&header.lumps[Q3LUMP_SHADERS]);
			CMod_LoadFaces			(&header.lumps[Q3LUMP_SURFACES]);
//			GLMod_LoadMarksurfaces	(&header.lumps[Q3LUMP_LEAFFACES]);
		#endif
			CMod_LoadVisibility		(&header.lumps[Q3LUMP_VISIBILITY]);
			CModQ3_LoadSubmodels	(&header.lumps[Q3LUMP_MODELS]);
			CModQ3_LoadLeafs		(&header.lumps[Q3LUMP_LEAFS]);
			CModQ3_LoadNodes		(&header.lumps[Q3LUMP_NODES]);
//			CMod_LoadAreas			(&header.lumps[Q3LUMP_AREAS]);
//			CMod_LoadAreaPortals	(&header.lumps[Q3LUMP_AREAPORTALS]);
			CMod_LoadEntityString	(&header.lumps[Q3LUMP_ENTITIES]);
*/

		map_faces = NULL;
		map_leaffaces = NULL;

		Q1BSPX_Setup(loadmodel, mod_base, com_filesize, header.lumps, Q3LUMPS_TOTAL);

		switch(qrenderer)
		{
#if defined(GLQUAKE)
		case QR_OPENGL:
#endif
#if defined(D3DQUAKE)
		case QR_DIRECT3D:
#endif
		case QR_NONE:	//dedicated only
			mapisq3 = true;
			noerrors = noerrors && CModQ3_LoadShaders		(&header.lumps[Q3LUMP_SHADERS]);
			noerrors = noerrors && CModQ3_LoadPlanes		(&header.lumps[Q3LUMP_PLANES]);
			noerrors = noerrors && CModQ3_LoadLeafBrushes	(&header.lumps[Q3LUMP_LEAFBRUSHES]);
			noerrors = noerrors && CModQ3_LoadBrushes		(&header.lumps[Q3LUMP_BRUSHES]);
			if (header.version == 1)
			{
				noerrors = noerrors && CModRBSP_LoadBrushSides	(&header.lumps[Q3LUMP_BRUSHSIDES]);
				noerrors = noerrors && CModRBSP_LoadVertexes	(&header.lumps[Q3LUMP_DRAWVERTS]);
			}
			else
			{
				noerrors = noerrors && CModQ3_LoadBrushSides	(&header.lumps[Q3LUMP_BRUSHSIDES]);
				noerrors = noerrors && CModQ3_LoadVertexes		(&header.lumps[Q3LUMP_DRAWVERTS]);
			}
			if (header.version == 1)
				noerrors = noerrors && CModRBSP_LoadFaces		(&header.lumps[Q3LUMP_SURFACES]);
			else
				noerrors = noerrors && CModQ3_LoadFaces		(&header.lumps[Q3LUMP_SURFACES]);
#if defined(GLQUAKE) || defined(D3DQUAKE)
			if (qrenderer != QR_NONE)
			{
				if (noerrors)
					RMod_LoadLighting		(&header.lumps[Q3LUMP_LIGHTMAPS]);	//fixme: duplicated loading.
				if (header.version == 1)
					noerrors = noerrors && CModRBSP_LoadLightgrid	(&header.lumps[Q3LUMP_LIGHTGRID], &header.lumps[RBSPLUMP_LIGHTINDEXES]);
				else
					noerrors = noerrors && CModQ3_LoadLightgrid	(&header.lumps[Q3LUMP_LIGHTGRID]);
				noerrors = noerrors && CModQ3_LoadIndexes		(&header.lumps[Q3LUMP_DRAWINDEXES]);

				if (header.version != Q3BSPVERSION+1)
					noerrors = noerrors && CModQ3_LoadFogs			(&header.lumps[Q3LUMP_FOGS]);
				else
					map_numfogs = 0;

				buildcookie = (void *)(mod_base + header.lumps[Q3LUMP_SURFACES].fileofs);
				if (header.version == 1)
				{
					noerrors = noerrors && CModRBSP_LoadRFaces	(&header.lumps[Q3LUMP_SURFACES]);
					buildmeshes = CModRBSP_BuildSurfMesh;
				}
				else
				{
					noerrors = noerrors && CModQ3_LoadRFaces	(&header.lumps[Q3LUMP_SURFACES]);
					buildmeshes = CModQ3_BuildSurfMesh;
				}
				noerrors = noerrors && CModQ3_LoadMarksurfaces (&header.lumps[Q3LUMP_LEAFSURFACES]);	//fixme: duplicated loading.

				/*make sure all textures have a shader*/
				for (i=0; i<loadmodel->numtextures; i++)
				{
					if (!loadmodel->textures[i]->shader)
						loadmodel->textures[i]->shader = R_RegisterShader_Lightmap(loadmodel->textures[i]->name);
				}
			}
#endif
			noerrors = noerrors && CModQ3_LoadLeafFaces	(&header.lumps[Q3LUMP_LEAFSURFACES]);
			noerrors = noerrors && CModQ3_LoadLeafs		(&header.lumps[Q3LUMP_LEAFS]);
			noerrors = noerrors && CModQ3_LoadNodes		(&header.lumps[Q3LUMP_NODES]);
			noerrors = noerrors && CModQ3_LoadSubmodels	(&header.lumps[Q3LUMP_MODELS]);
			noerrors = noerrors && CModQ3_LoadVisibility	(&header.lumps[Q3LUMP_VISIBILITY]);
			if (noerrors)
				CMod_LoadEntityString	(&header.lumps[Q3LUMP_ENTITIES]);

			if (!noerrors)
			{
				if (map_faces)
					BZ_Free(map_faces);
				if (map_leaffaces)
					BZ_Free(map_leaffaces);

				Hunk_FreeToLowMark(start);
				return NULL;
			}

#ifndef CLIENTONLY
			loadmodel->funcs.FatPVS					= Q2BSP_FatPVS;
			loadmodel->funcs.EdictInFatPVS			= Q2BSP_EdictInFatPVS;
			loadmodel->funcs.FindTouchedLeafs		= Q2BSP_FindTouchedLeafs;
#endif
			loadmodel->funcs.LeafPVS				= CM_LeafnumPVS;
			loadmodel->funcs.LeafnumForPoint			= CM_PointLeafnum;

#if defined(GLQUAKE) || defined(D3DQUAKE)
			loadmodel->funcs.LightPointValues		= GLQ3_LightGrid;
			loadmodel->funcs.StainNode				= GLR_Q2BSP_StainNode;
			loadmodel->funcs.MarkLights				= Q2BSP_MarkLights;
#endif
			loadmodel->funcs.PointContents			= Q2BSP_PointContents;
			loadmodel->funcs.NativeTrace			= CM_NativeTrace;
			loadmodel->funcs.NativeContents			= CM_NativeContents;

#ifndef SERVERONLY
			//light grid info
			if (loadmodel->lightgrid)
			{
				float maxs;
				q3lightgridinfo_t *lg = loadmodel->lightgrid;
				if ( lg->gridSize[0] < 1 || lg->gridSize[1] < 1 || lg->gridSize[2] < 1 )
				{
					lg->gridSize[0] = 64;
					lg->gridSize[1] = 64;
					lg->gridSize[2] = 128;
				}

				for ( i = 0; i < 3; i++ )
				{
					lg->gridMins[i] = lg->gridSize[i] * ceil( (map_cmodels->mins[i] + 1) / lg->gridSize[i] );
					maxs = lg->gridSize[i] * floor( (map_cmodels->maxs[i] - 1) / lg->gridSize[i] );
					lg->gridBounds[i] = (maxs - lg->gridMins[i])/lg->gridSize[i] + 1;
				}

				lg->gridBounds[3] = lg->gridBounds[1] * lg->gridBounds[0];
			}
#endif

			if (!CM_CreatePatchesForLeafs ())	//for clipping
			{
				BZ_Free(map_faces);
				BZ_Free(map_leaffaces);
				Hunk_FreeToLowMark(start);
				return NULL;
			}

#ifndef CLIENTONLY
			CMQ3_CalcPHS();
#endif

//			BZ_Free(map_verts);
			BZ_Free(map_faces);
			BZ_Free(map_leaffaces);

			break;
		default:
#ifdef SERVERONLY
			SV_Error("Cannot load q3bsps with the current renderer (only dedicated and opengl renderer)\n");
#else
			Con_Printf(CON_ERROR "Cannot load q3bsps with the current renderer (only dedicated and opengl renderer)\n");
			return NULL;
#endif
		}
		break;
#endif
	case Q2BSPVERSION:
		mapisq3 = false;
		loadmodel->engineflags |= MDLF_NEEDOVERBRIGHT;
		for (i=0 ; i<Q2HEADER_LUMPS ; i++)
		{
			header.lumps[i].filelen = LittleLong (header.lumps[i].filelen);
			header.lumps[i].fileofs = LittleLong (header.lumps[i].fileofs);
		}

		Q1BSPX_Setup(loadmodel, mod_base, com_filesize, header.lumps, Q2HEADER_LUMPS);

#ifndef SERVERONLY
		if (CM_GetQ2Palette())
			memcpy(d_q28to24table, host_basepal, 768);
#endif

		switch(qrenderer)
		{
		case QR_NONE:	//dedicated only
			noerrors = noerrors && CMod_LoadSurfaces		(&header.lumps[Q2LUMP_TEXINFO]);
			noerrors = noerrors && CMod_LoadLeafBrushes	(&header.lumps[Q2LUMP_LEAFBRUSHES]);
			noerrors = noerrors && CMod_LoadPlanes			(&header.lumps[Q2LUMP_PLANES]);
			noerrors = noerrors && CMod_LoadVisibility		(&header.lumps[Q2LUMP_VISIBILITY]);
			noerrors = noerrors && CMod_LoadBrushes		(&header.lumps[Q2LUMP_BRUSHES]);
			noerrors = noerrors && CMod_LoadBrushSides		(&header.lumps[Q2LUMP_BRUSHSIDES]);
			noerrors = noerrors && CMod_LoadSubmodels		(&header.lumps[Q2LUMP_MODELS]);
			noerrors = noerrors && CMod_LoadLeafs			(&header.lumps[Q2LUMP_LEAFS]);
			noerrors = noerrors && CMod_LoadNodes			(&header.lumps[Q2LUMP_NODES]);
			noerrors = noerrors && CMod_LoadAreas			(&header.lumps[Q2LUMP_AREAS]);
			noerrors = noerrors && CMod_LoadAreaPortals	(&header.lumps[Q2LUMP_AREAPORTALS]);
			if (noerrors)
				CMod_LoadEntityString	(&header.lumps[Q2LUMP_ENTITIES]);

#ifndef CLIENTONLY
			loadmodel->funcs.FatPVS					= Q2BSP_FatPVS;
			loadmodel->funcs.EdictInFatPVS			= Q2BSP_EdictInFatPVS;
			loadmodel->funcs.FindTouchedLeafs		= Q2BSP_FindTouchedLeafs;
#endif
			loadmodel->funcs.LightPointValues		= NULL;
			loadmodel->funcs.StainNode				= NULL;
			loadmodel->funcs.MarkLights				= NULL;
			loadmodel->funcs.LeafPVS				= CM_LeafnumPVS;
			loadmodel->funcs.LeafnumForPoint		= CM_PointLeafnum;
			loadmodel->funcs.PointContents			= Q2BSP_PointContents;
			loadmodel->funcs.NativeTrace			= CM_NativeTrace;
			loadmodel->funcs.NativeContents			= CM_NativeContents;

			break;
#if defined(GLQUAKE) || defined(D3DQUAKE)
		case QR_DIRECT3D:
		case QR_OPENGL:
		// load into heap
		#ifndef SERVERONLY
			noerrors = noerrors && RMod_LoadVertexes		(&header.lumps[Q2LUMP_VERTEXES]);
			noerrors = noerrors && RMod_LoadEdges			(&header.lumps[Q2LUMP_EDGES], false);
			noerrors = noerrors && RMod_LoadSurfedges		(&header.lumps[Q2LUMP_SURFEDGES]);
			if (noerrors)
				RMod_LoadLighting		(&header.lumps[Q2LUMP_LIGHTING]);
		#endif
			noerrors = noerrors && CMod_LoadSurfaces		(&header.lumps[Q2LUMP_TEXINFO]);
			noerrors = noerrors && CMod_LoadLeafBrushes	(&header.lumps[Q2LUMP_LEAFBRUSHES]);
			noerrors = noerrors && CMod_LoadPlanes			(&header.lumps[Q2LUMP_PLANES]);
		#ifndef SERVERONLY
			noerrors = noerrors && CMod_LoadTexInfo		(&header.lumps[Q2LUMP_TEXINFO]);
			noerrors = noerrors && CMod_LoadFaces			(&header.lumps[Q2LUMP_FACES]);
			noerrors = noerrors && RMod_LoadMarksurfaces	(&header.lumps[Q2LUMP_LEAFFACES], false);
		#endif
			noerrors = noerrors && CMod_LoadVisibility		(&header.lumps[Q2LUMP_VISIBILITY]);
			noerrors = noerrors && CMod_LoadBrushes		(&header.lumps[Q2LUMP_BRUSHES]);
			noerrors = noerrors && CMod_LoadBrushSides		(&header.lumps[Q2LUMP_BRUSHSIDES]);
			noerrors = noerrors && CMod_LoadSubmodels		(&header.lumps[Q2LUMP_MODELS]);
			noerrors = noerrors && CMod_LoadLeafs			(&header.lumps[Q2LUMP_LEAFS]);
			noerrors = noerrors && CMod_LoadNodes			(&header.lumps[Q2LUMP_NODES]);
			noerrors = noerrors && CMod_LoadAreas			(&header.lumps[Q2LUMP_AREAS]);
			noerrors = noerrors && CMod_LoadAreaPortals	(&header.lumps[Q2LUMP_AREAPORTALS]);
			if (noerrors)
				CMod_LoadEntityString	(&header.lumps[Q2LUMP_ENTITIES]);

			if (!noerrors)
			{
				Hunk_FreeToLowMark(start);
				return NULL;
			}
#ifndef CLIENTONLY
			loadmodel->funcs.FatPVS					= Q2BSP_FatPVS;
			loadmodel->funcs.EdictInFatPVS			= Q2BSP_EdictInFatPVS;
			loadmodel->funcs.FindTouchedLeafs		= Q2BSP_FindTouchedLeafs;
#endif
			loadmodel->funcs.LightPointValues		= GLQ2BSP_LightPointValues;
			loadmodel->funcs.StainNode				= GLR_Q2BSP_StainNode;
			loadmodel->funcs.MarkLights				= Q2BSP_MarkLights;
			loadmodel->funcs.LeafPVS				= CM_LeafnumPVS;
			loadmodel->funcs.LeafnumForPoint		= CM_PointLeafnum;
			loadmodel->funcs.PointContents			= Q2BSP_PointContents;
			loadmodel->funcs.NativeTrace			= CM_NativeTrace;
			loadmodel->funcs.NativeContents			= CM_NativeContents;
			break;
#endif
		default:
			Hunk_FreeToLowMark(start);
			return NULL;
			Sys_Error("Bad internal renderer on q2 map load\n");
		}
	}

#ifndef SERVERONLY
	Mod_ParseInfoFromEntityLump(loadmodel, loadmodel->entities, loadname);	//only done for client's world model (or server if the server is loading it for client)
#endif

	CM_InitBoxHull ();

	if (map_autoopenportals.value)
		memset (portalopen, 1, sizeof(portalopen));	//open them all. Used for progs that havn't got a clue.
	else
		memset (portalopen, 0, sizeof(portalopen));	//make them start closed.
	FloodAreaConnections ();

	loadmodel->checksum = loadmodel->checksum2 = *checksum;

	loadmodel->nummodelsurfaces = loadmodel->numsurfaces;
	memset(&loadmodel->batches, 0, sizeof(loadmodel->batches));
	loadmodel->vbos = NULL;
#ifndef SERVERONLY
	if (qrenderer != QR_NONE)
		RMod_Batches_Build(NULL, loadmodel, buildmeshes, buildcookie);
#endif

	loadmodel->numsubmodels = CM_NumInlineModels(loadmodel);
	{
		model_t	*mod = loadmodel;

		mod->hulls[0].firstclipnode = map_cmodels[0].headnode;
		mod->hulls[0].available = true;

		for (j=1 ; j<MAX_MAP_HULLSM ; j++)
		{
			mod->hulls[j].firstclipnode = map_cmodels[0].headnode;
			mod->hulls[j].available = false;
		}

		mod->nummodelsurfaces = map_cmodels[0].numsurfaces;

		for (i=1 ; i< loadmodel->numsubmodels ; i++)
		{
			cmodel_t	*bm;

			char	name[10];

			sprintf (name, "*%i", i);
			loadmodel = Mod_FindName (name);
			*loadmodel = *mod;
			strcpy (loadmodel->name, name);
			mod = loadmodel;

			bm = CM_InlineModel (name);


			mod->hulls[0].firstclipnode = bm->headnode;
			mod->hulls[0].available = true;
			mod->nummodelsurfaces = bm->numsurfaces;
			mod->firstmodelsurface = bm->firstsurface;
			for (j=1 ; j<MAX_MAP_HULLSM ; j++)
			{
				mod->hulls[j].firstclipnode = bm->headnode;
				mod->hulls[j].lastclipnode = mod->numclipnodes-1;
				mod->hulls[j].available = false;
			}

			memset(&mod->batches, 0, sizeof(mod->batches));
			mod->vbos = NULL;
#ifndef SERVERONLY
			if (qrenderer != QR_NONE)
				RMod_Batches_Build(NULL, mod, buildmeshes, buildcookie);
#endif

			VectorCopy (bm->maxs, mod->maxs);
			VectorCopy (bm->mins, mod->mins);
#ifndef SERVERONLY
			mod->radius = RadiusFromBounds (mod->mins, mod->maxs);

			P_DefaultTrail(mod);
#endif
		}
	}


	return &map_cmodels[0];
}

/*
==================
CM_InlineModel
==================
*/
cmodel_t	*CM_InlineModel (char *name)
{
	int		num;

	if (!name)
		Host_Error("Bad model\n");
	else if (name[0] != '*')
		Host_Error("Bad model\n");

	num = atoi (name+1);

	if (num < 1 || num >= numcmodels)
		Host_Error ("CM_InlineModel: bad number");

	return &map_cmodels[num];
}

int		CM_NumClusters (model_t *model)
{
	return numclusters;
}

int		CM_ClusterSize (model_t *model)
{
	return map_q3pvs->rowsize ? map_q3pvs->rowsize : MAX_MAP_LEAFS / 8;
}

int		CM_NumInlineModels (model_t *model)
{
	return numcmodels;
}

char	*CM_EntityString (model_t *model)
{
	return map_entitystring;
}

int		CM_LeafContents (model_t *model, int leafnum)
{
	if (leafnum < 0 || leafnum >= numleafs)
		Host_Error ("CM_LeafContents: bad number");
	return map_leafs[leafnum].contents;
}

int		CM_LeafCluster (model_t *model, int leafnum)
{
	if (leafnum < 0 || leafnum >= numleafs)
		Host_Error ("CM_LeafCluster: bad number");
	return map_leafs[leafnum].cluster;
}

int		CM_LeafArea (model_t *model, int leafnum)
{
	if (leafnum < 0 || leafnum >= numleafs)
		Host_Error ("CM_LeafArea: bad number");
	return map_leafs[leafnum].area;
}

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


mplane_t	*box_planes;
int			box_headnode;
q2cbrush_t	*box_brush;
mleaf_t		*box_leaf;
model_t		box_model;

/*
===================
CM_InitBoxHull

Set up the planes and nodes so that the six floats of a bounding box
can just be stored out and get a proper clipping hull structure.
===================
*/
void CM_InitBoxHull (void)
{
	int			i;
	int			side;
	mnode_t		*c;
	mplane_t	*p;
	q2cbrushside_t	*s;


#ifndef CLIENTONLY
	box_model.funcs.FatPVS				= Q2BSP_FatPVS;
	box_model.funcs.EdictInFatPVS		= Q2BSP_EdictInFatPVS;
	box_model.funcs.FindTouchedLeafs	= Q2BSP_FindTouchedLeafs;
#endif

#ifndef SERVERONLY
	box_model.funcs.MarkLights			= Q2BSP_MarkLights;
#endif
	box_model.funcs.LeafPVS				= CM_LeafnumPVS;
	box_model.funcs.LeafnumForPoint		= CM_PointLeafnum;
	box_model.funcs.NativeContents		= CM_NativeContents;
	box_model.funcs.NativeTrace			= CM_NativeTrace;

	box_model.hulls[0].available = true;

	box_model.nodes = Hunk_Alloc(sizeof(mnode_t)*6);
	box_planes = &map_planes[numplanes];
	if (numbrushes+1 > MAX_Q2MAP_BRUSHES
		|| numleafbrushes+1 > MAX_Q2MAP_LEAFBRUSHES
		|| numbrushsides+6 > MAX_Q2MAP_BRUSHSIDES
		|| numplanes+12 > MAX_Q2MAP_PLANES)
		Host_Error ("Not enough room for box tree");

	box_brush = &map_brushes[numbrushes];
	box_brush->numsides = 6;
	box_brush->brushside = &map_brushsides[numbrushsides];
	box_brush->contents = Q2CONTENTS_MONSTER;

	box_leaf = &map_leafs[numleafs];
	box_leaf->contents = Q2CONTENTS_MONSTER;
	box_leaf->firstleafbrush = numleafbrushes;
	box_leaf->numleafbrushes = 1;

	map_leafbrushes[numleafbrushes] = numbrushes;

	for (i=0 ; i<6 ; i++)
	{
		side = i&1;

		// brush sides
		s = &map_brushsides[numbrushsides+i];
		s->plane = 	map_planes + (numplanes+i*2+side);
		s->surface = &nullsurface;

		// nodes
		c = &box_model.nodes[i];
		c->plane = map_planes + (numplanes+i*2);
		c->childnum[side] = -1 - emptyleaf;
		if (i != 5)
			c->childnum[side^1] = box_headnode+i + 1;
		else
			c->childnum[side^1] = -1 - numleafs;

		// planes
		p = &box_planes[i*2];
		p->type = i>>1;
		p->signbits = 0;
		VectorClear (p->normal);
		p->normal[i>>1] = 1;

		p = &box_planes[i*2+1];
		p->type = 3 + (i>>1);
		p->signbits = 0;
		VectorClear (p->normal);
		p->normal[i>>1] = -1;
	}
}


/*
===================
CM_HeadnodeForBox

To keep everything totally uniform, bounding boxes are turned into small
BSP trees instead of being compared directly.
===================
*/
void CM_SetTempboxSize (vec3_t mins, vec3_t maxs)
{
	box_planes[0].dist = maxs[0];
	box_planes[1].dist = -maxs[0];
	box_planes[2].dist = mins[0];
	box_planes[3].dist = -mins[0];
	box_planes[4].dist = maxs[1];
	box_planes[5].dist = -maxs[1];
	box_planes[6].dist = mins[1];
	box_planes[7].dist = -mins[1];
	box_planes[8].dist = maxs[2];
	box_planes[9].dist = -maxs[2];
	box_planes[10].dist = mins[2];
	box_planes[11].dist = -mins[2];
}

model_t *CM_TempBoxModel(vec3_t mins, vec3_t maxs)
{
	if (box_planes == NULL)
		CM_InitBoxHull();
	CM_SetTempboxSize(mins, maxs);
	return &box_model;
}

/*
==================
CM_PointLeafnum_r

==================
*/
int CM_PointLeafnum_r (model_t *mod, vec3_t p, int num)
{
	float		d;
	mnode_t		*node;
	mplane_t	*plane;

	while (num >= 0)
	{
		node = mod->nodes + num;
		plane = node->plane;

		if (plane->type < 3)
			d = p[plane->type] - plane->dist;
		else
			d = DotProduct (plane->normal, p) - plane->dist;
		if (d < 0)
			num = node->childnum[1];
		else
			num = node->childnum[0];
	}

	c_pointcontents++;		// optimize counter

	return -1 - num;
}

int CM_PointLeafnum (model_t *mod, vec3_t p)
{
	if (!numplanes)
		return 0;		// sound may call this without map loaded
	return CM_PointLeafnum_r (mod, p, 0);
}

/*
=============
CM_BoxLeafnums

Fills in a list of all the leafs touched
=============
*/
int		leaf_count, leaf_maxcount;
int		*leaf_list;
float	*leaf_mins, *leaf_maxs;
int		leaf_topnode;

void CM_BoxLeafnums_r (model_t *mod, int nodenum)
{
	mplane_t	*plane;
	mnode_t		*node;
	int		s;

	while (1)
	{
		if (nodenum < 0)
		{
			if (leaf_count >= leaf_maxcount)
			{
//				Com_Printf ("CM_BoxLeafnums_r: overflow\n");
				return;
			}
			leaf_list[leaf_count++] = -1 - nodenum;
			return;
		}

		node = &mod->nodes[nodenum];
		plane = node->plane;
//		s = BoxOnPlaneSide (leaf_mins, leaf_maxs, plane);
		s = BOX_ON_PLANE_SIDE(leaf_mins, leaf_maxs, plane);
		if (s == 1)
			nodenum = node->childnum[0];
		else if (s == 2)
			nodenum = node->childnum[1];
		else
		{	// go down both
			if (leaf_topnode == -1)
				leaf_topnode = nodenum;
			CM_BoxLeafnums_r (mod, node->childnum[0]);
			nodenum = node->childnum[1];
		}

	}
}

int	CM_BoxLeafnums_headnode (model_t *mod, vec3_t mins, vec3_t maxs, int *list, int listsize, int headnode, int *topnode)
{
	leaf_list = list;
	leaf_count = 0;
	leaf_maxcount = listsize;
	leaf_mins = mins;
	leaf_maxs = maxs;

	leaf_topnode = -1;

	CM_BoxLeafnums_r (mod, headnode);

	if (topnode)
		*topnode = leaf_topnode;

	return leaf_count;
}

int	CM_BoxLeafnums (model_t *mod, vec3_t mins, vec3_t maxs, int *list, int listsize, int *topnode)
{
	return CM_BoxLeafnums_headnode (mod, mins, maxs, list,
		listsize, mod->hulls[0].firstclipnode, topnode);
}



/*
==================
CM_PointContents

==================
*/
#define PlaneDiff(point,plane) (((plane)->type < 3 ? (point)[(plane)->type] : DotProduct((point), (plane)->normal)) - (plane)->dist)
int CM_PointContents (model_t *mod, vec3_t p)
{
	int				i, j, contents;
	mleaf_t			*leaf;
	q2cbrush_t		*brush;
	q2cbrushside_t	*brushside;

	if (!mod)	// map not loaded
		return 0;

	i = CM_PointLeafnum_r (mod, p, mod->hulls[0].firstclipnode);

	if (!mapisq3)
		return map_leafs[i].contents;	//q2 is simple.

	leaf = &map_leafs[i];

//	if ( leaf->contents & CONTENTS_NODROP ) {
//		contents = CONTENTS_NODROP;
//	} else {
		contents = 0;
//	}

	for (i = 0; i < leaf->numleafbrushes; i++)
	{
		brush = &map_brushes[map_leafbrushes[leaf->firstleafbrush + i]];

		// check if brush actually adds something to contents
		if ( (contents & brush->contents) == brush->contents ) {
			continue;
		}

		brushside = brush->brushside;
		for ( j = 0; j < brush->numsides; j++, brushside++ )
		{
			if ( PlaneDiff (p, brushside->plane) > 0 )
				break;
		}

		if (j == brush->numsides)
			contents |= brush->contents;
	}

	return contents;
}

unsigned int CM_NativeContents(struct model_s *model, int hulloverride, int frame, vec3_t axis[3], vec3_t p, vec3_t mins, vec3_t maxs)
{
	int	contents;
	if (!DotProduct(mins, mins) && !DotProduct(maxs, maxs))
		return CM_PointContents(model, p);

	if (!model)	// map not loaded
		return 0;


	{
		int i, j, k;
		mleaf_t			*leaf;
		q2cbrush_t		*brush;
		q2cbrushside_t	*brushside;
		vec3_t absmin, absmax;

		int leaflist[64];

		k = CM_BoxLeafnums (model, absmin, absmax, leaflist, 64, NULL);

		contents = 0;
		for (k--; k >= 0; k--)
		{
			leaf = &map_leafs[leaflist[k]];
			if (mapisq3)
			{
				for (i = 0; i < leaf->numleafbrushes; i++)
				{
					brush = &map_brushes[map_leafbrushes[leaf->firstleafbrush + i]];

					// check if brush actually adds something to contents
					if ( (contents & brush->contents) == brush->contents ) {
						continue;
					}

					brushside = brush->brushside;
					for ( j = 0; j < brush->numsides; j++, brushside++ )
					{
						if ( PlaneDiff (p, brushside->plane) > 0 )
							break;
					}

					if (j == brush->numsides)
						contents |= brush->contents;
				}
			}
			else
				contents |= leaf->contents;
		}
	}

	return contents;
}

/*
==================
CM_TransformedPointContents

Handles offseting and rotation of the end points for moving and
rotating entities
==================
*/
int	CM_TransformedPointContents (model_t *mod, vec3_t p, int headnode, vec3_t origin, vec3_t angles)
{
	vec3_t		p_l;
	vec3_t		temp;
	vec3_t		forward, right, up;

	// subtract origin offset
	VectorSubtract (p, origin, p_l);

	// rotate start and end into the models frame of reference
	if (headnode != box_headnode &&
	(angles[0] || angles[1] || angles[2]) )
	{
		AngleVectors (angles, forward, right, up);

		VectorCopy (p_l, temp);
		p_l[0] = DotProduct (temp, forward);
		p_l[1] = -DotProduct (temp, right);
		p_l[2] = DotProduct (temp, up);
	}

	return CM_PointContents(mod, p);
}


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

BOX TRACING

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

// 1/32 epsilon to keep floating point happy
#define	DIST_EPSILON	(0.03125)

vec3_t	trace_start, trace_end;
vec3_t	trace_mins, trace_maxs;
vec3_t	trace_extents;
vec3_t	trace_absmins, trace_absmaxs;
float	trace_truefraction;
float	trace_nearfraction;

trace_t	trace_trace;
int		trace_contents;
qboolean	trace_ispoint;		// optimized case

/*
================
CM_ClipBoxToBrush
================
*/
void CM_ClipBoxToBrush (vec3_t mins, vec3_t maxs, vec3_t p1, vec3_t p2,
					  trace_t *trace, q2cbrush_t *brush)
{
	int			i, j;
	mplane_t	*plane, *clipplane;
	float		dist;
	float		enterfrac, leavefrac;
	vec3_t		ofs;
	float		d1, d2;
	qboolean	getout, startout;
	float		f;
	q2cbrushside_t	*side, *leadside;

	float nearfrac=0;
	enterfrac = -1;
	leavefrac = 2;
	clipplane = NULL;

	if (!brush->numsides)
		return;

	c_brush_traces++;

	getout = false;
	startout = false;
	leadside = NULL;

	for (i=0 ; i<brush->numsides ; i++)
	{
		side = brush->brushside+i;
		plane = side->plane;

		// FIXME: special case for axial

		if (!trace_ispoint)
		{	// general box case

			// push the plane out apropriately for mins/maxs

			// FIXME: use signbits into 8 way lookup for each mins/maxs
			for (j=0 ; j<3 ; j++)
			{
				if (plane->normal[j] < 0)
					ofs[j] = maxs[j];
				else
					ofs[j] = mins[j];
			}
			dist = DotProduct (ofs, plane->normal);
			dist = plane->dist - dist;
		}
		else
		{	// special point case
			dist = plane->dist;
		}

		d1 = DotProduct (p1, plane->normal) - dist;
		d2 = DotProduct (p2, plane->normal) - dist;

		if (d2 > 0)
			getout = true;	// endpoint is not in solid
		if (d1 > 0)
			startout = true;

		// if completely in front of face, no intersection
		if (d1 > 0 && d2 >= d1)
			return;

		if (d1 <= 0 && d2 <= 0)
			continue;

		// crosses face
		if (d1 > d2)
		{	// enter
			f = (d1) / (d1-d2);
			if (f > enterfrac)
			{
				enterfrac = f;
				nearfrac = (d1-DIST_EPSILON) / (d1-d2);
				clipplane = plane;
				leadside = side;
			}
		}
		else
		{	// leave
			f = (d1) / (d1-d2);
			if (f < leavefrac)
				leavefrac = f;
		}
	}

	if (!startout)
	{	// original point was inside brush
		trace->startsolid = true;
		if (!getout)
			trace->allsolid = true;
		return;
	}
	if (enterfrac <= leavefrac)
	{
		if (enterfrac > -1 && enterfrac <= trace_truefraction)
		{
			if (enterfrac < 0)
				enterfrac = 0;

			trace_nearfraction = nearfrac;
			trace_truefraction = enterfrac;

			trace->plane.dist = clipplane->dist;
			VectorCopy(clipplane->normal, trace->plane.normal);
			trace->surface = &(leadside->surface->c);
			trace->contents = brush->contents;
		}
	}
}

void CM_ClipBoxToPatch (vec3_t mins, vec3_t maxs, vec3_t p1, vec3_t p2,
					  trace_t *trace, q2cbrush_t *brush)
{
	int			i, j;
	mplane_t	*plane, *clipplane;
	float		enterfrac, leavefrac, nearfrac = 0;
	vec3_t		ofs;
	float		d1, d2;
	float dist;
	qboolean	startout;
	float		f;
	q2cbrushside_t	*side, *leadside;

	if (!brush->numsides)
		return;

	c_brush_traces++;

	enterfrac = -1;
	leavefrac = 2;
	clipplane = NULL;
	startout = false;
	leadside = NULL;

	for (i=0 ; i<brush->numsides ; i++)
	{
		side = brush->brushside+i;
		plane = side->plane;

		if (!trace_ispoint)
		{	// general box case

			// push the plane out apropriately for mins/maxs

			// FIXME: use signbits into 8 way lookup for each mins/maxs
			for (j=0 ; j<3 ; j++)
			{
				if (plane->normal[j] < 0)
					ofs[j] = maxs[j];
				else
					ofs[j] = mins[j];
			}
			dist = DotProduct (ofs, plane->normal);
			dist = plane->dist - dist;
		}
		else
		{	// special point case
			dist = plane->dist;
		}

		d1 = DotProduct (p1, plane->normal) - dist;
		d2 = DotProduct (p2, plane->normal) - dist;

		// if completely in front of face, no intersection
		if (d1 > 0 && d2 >= d1)
			return;

		if (d1 > 0)
			startout = true;

		if (d1 <= 0 && d2 <= 0)
			continue;

		// crosses face
		if (d1 > d2)
		{	// enter
			f = (d1) / (d1-d2);
			if (f > enterfrac)
			{
				enterfrac = f;
				nearfrac = (d1-DIST_EPSILON) / (d1-d2);
				clipplane = plane;
				leadside = side;
			}
		}
		else
		{	// leave
			f = (d1) / (d1-d2);
			if (f < leavefrac)
				leavefrac = f;
		}
	}

	if (!startout)
	{
		trace->startsolid = true;
		return;		// original point is inside the patch
	}

	if (nearfrac <= leavefrac)
	{
		if (leadside && leadside->surface
			&& enterfrac <= trace_truefraction)
		{
			if (enterfrac < 0)
				enterfrac = 0;
			trace_truefraction = enterfrac;
			trace_nearfraction = nearfrac;
			trace->plane.dist = clipplane->dist;
			VectorCopy(clipplane->normal, trace->plane.normal);
			trace->surface = &leadside->surface->c;
			trace->contents = brush->contents;
		}
		else if (enterfrac < trace_truefraction)
			leavefrac=0;
	}
}


/*
================
CM_TestBoxInBrush
================
*/
void CM_TestBoxInBrush (vec3_t mins, vec3_t maxs, vec3_t p1,
					  trace_t *trace, q2cbrush_t *brush)
{
	int			i, j;
	mplane_t	*plane;
	float		dist;
	vec3_t		ofs;
	float		d1;
	q2cbrushside_t	*side;

	if (!brush->numsides)
		return;

	for (i=0 ; i<brush->numsides ; i++)
	{
		side = brush->brushside+i;
		plane = side->plane;

		// FIXME: special case for axial

		// general box case

		// push the plane out apropriately for mins/maxs

		// FIXME: use signbits into 8 way lookup for each mins/maxs
		for (j=0 ; j<3 ; j++)
		{
			if (plane->normal[j] < 0)
				ofs[j] = maxs[j];
			else
				ofs[j] = mins[j];
		}
		dist = DotProduct (ofs, plane->normal);
		dist = plane->dist - dist;

		d1 = DotProduct (p1, plane->normal) - dist;

		// if completely in front of face, no intersection
		if (d1 > 0)
			return;
	}

	// inside this brush
	trace->startsolid = trace->allsolid = true;
	trace->contents |= brush->contents;
}

void CM_TestBoxInPatch (vec3_t mins, vec3_t maxs, vec3_t p1,
					  trace_t *trace, q2cbrush_t *brush)
{
	int			i, j;
	mplane_t	*plane;
	vec3_t		ofs;
	float dist;
	float		d1, maxdist;
	q2cbrushside_t	*side;

	if (!brush->numsides)
		return;

	maxdist = -9999;

	for (i=0 ; i<brush->numsides ; i++)
	{
		side = brush->brushside+i;
		plane = side->plane;

		// general box case

		// push the plane out apropriately for mins/maxs

		// FIXME: use signbits into 8 way lookup for each mins/maxs
		for (j=0 ; j<3 ; j++)
		{
			if (plane->normal[j] < 0)
				ofs[j] = maxs[j];
			else
				ofs[j] = mins[j];
		}

		dist = DotProduct (ofs, plane->normal);
		dist = plane->dist - dist;

		d1 = DotProduct (p1, plane->normal) - dist;

		// if completely in front of face, no intersection
		if (d1 > 0)
			return;

		if (side->surface && d1 > maxdist)
			maxdist = d1;
	}

// FIXME
	if (maxdist < -0.25)
		return;		// deep inside the patch

	// inside this patch
	trace->startsolid = trace->allsolid = true;
	trace->contents = brush->contents;
}


/*
================
CM_TraceToLeaf
================
*/
void CM_TraceToLeaf (int leafnum)
{
	int			k, j;
	int			brushnum;
	mleaf_t		*leaf;
	q2cbrush_t	*b;

	int patchnum;
	q3cpatch_t *patch;

	leaf = &map_leafs[leafnum];
	if ( !(leaf->contents & trace_contents))
		return;
	// trace line against all brushes in the leaf
	for (k=0 ; k<leaf->numleafbrushes ; k++)
	{
		brushnum = map_leafbrushes[leaf->firstleafbrush+k];
		b = &map_brushes[brushnum];
		if (b->checkcount == checkcount)
			continue;	// already checked this brush in another leaf
		b->checkcount = checkcount;

		if ( !(b->contents & trace_contents))
			continue;
		CM_ClipBoxToBrush (trace_mins, trace_maxs, trace_start, trace_end, &trace_trace, b);
		if (trace_nearfraction <= 0)
			return;
	}

	if (!mapisq3 || map_noCurves.value)
		return;

	// trace line against all patches in the leaf
	for (k = 0; k < leaf->numleafpatches; k++)
	{
		patchnum = map_leafpatches[leaf->firstleafpatch+k];

		patch = &map_patches[patchnum];
		if (patch->checkcount == checkcount)
			continue;	// already checked this patch in another leaf
		patch->checkcount = checkcount;
		if ( !(patch->surface->c.value & trace_contents) )
			continue;
		if ( !BoundsIntersect(patch->absmins, patch->absmaxs, trace_absmins, trace_absmaxs) )
			continue;
		for (j = 0; j < patch->numbrushes; j++)
		{
			CM_ClipBoxToPatch (trace_mins, trace_maxs, trace_start, trace_end, &trace_trace, &patch->brushes[j]);
			if (trace_nearfraction<=0)
				return;
		}
	}

}


/*
================
CM_TestInLeaf
================
*/
void CM_TestInLeaf (int leafnum)
{
	int			k, j;
	int			brushnum;
	int patchnum;
	mleaf_t		*leaf;
	q2cbrush_t	*b;
	q3cpatch_t *patch;

	leaf = &map_leafs[leafnum];
	if ( !(leaf->contents & trace_contents))
		return;
	// trace line against all brushes in the leaf
	for (k=0 ; k<leaf->numleafbrushes ; k++)
	{
		brushnum = map_leafbrushes[leaf->firstleafbrush+k];
		b = &map_brushes[brushnum];
		if (b->checkcount == checkcount)
			continue;	// already checked this brush in another leaf
		b->checkcount = checkcount;

		if ( !(b->contents & trace_contents))
			continue;
		CM_TestBoxInBrush (trace_mins, trace_maxs, trace_start, &trace_trace, b);
		if (!trace_trace.fraction)
			return;
	}

	if (!mapisq3 || map_noCurves.value)
		return;

  	// trace line against all patches in the leaf
	for (k = 0; k < leaf->numleafpatches; k++)
	{
		patchnum = map_leafpatches[leaf->firstleafpatch+k];

		patch = &map_patches[patchnum];
		if (patch->checkcount == checkcount)
			continue;	// already checked this patch in another leaf
		patch->checkcount = checkcount;
		if ( !(patch->surface->c.value & trace_contents) )
			continue;
		if ( !BoundsIntersect(patch->absmins, patch->absmaxs, trace_absmins, trace_absmaxs) )
			continue;
		for (j = 0; j < patch->numbrushes; j++)
		{
			CM_TestBoxInPatch (trace_mins, trace_maxs, trace_start, &trace_trace, &patch->brushes[j]);
			if (!trace_trace.fraction)
				return;
		}
	}

}


/*
==================
CM_RecursiveHullCheck

==================
*/
void CM_RecursiveHullCheck (model_t *mod, int num, float p1f, float p2f, vec3_t p1, vec3_t p2)
{
	mnode_t		*node;
	mplane_t	*plane;
	float		t1, t2, offset;
	float		frac, frac2;
	float		idist;
	int			i;
	vec3_t		mid;
	int			side;
	float		midf;

	if (trace_truefraction <= p1f)
		return;		// already hit something nearer

	// if < 0, we are in a leaf node
	if (num < 0)
	{
		CM_TraceToLeaf (-1-num);
		return;
	}

	//
	// find the point distances to the seperating plane
	// and the offset for the size of the box
	//
	node = mod->nodes + num;
	plane = node->plane;

	if (plane->type < 3)
	{
		t1 = p1[plane->type] - plane->dist;
		t2 = p2[plane->type] - plane->dist;
		offset = trace_extents[plane->type];
	}
	else
	{
		t1 = DotProduct (plane->normal, p1) - plane->dist;
		t2 = DotProduct (plane->normal, p2) - plane->dist;
		if (trace_ispoint)
			offset = 0;
		else
			offset = fabs(trace_extents[0]*plane->normal[0]) +
				fabs(trace_extents[1]*plane->normal[1]) +
				fabs(trace_extents[2]*plane->normal[2]);
	}


#if 0
CM_RecursiveHullCheck (node->childnum[0], p1f, p2f, p1, p2);
CM_RecursiveHullCheck (node->childnum[1], p1f, p2f, p1, p2);
return;
#endif

	// see which sides we need to consider
	if (t1 >= offset && t2 >= offset)
	{
		CM_RecursiveHullCheck (mod, node->childnum[0], p1f, p2f, p1, p2);
		return;
	}
	if (t1 < -offset && t2 < -offset)
	{
		CM_RecursiveHullCheck (mod, node->childnum[1], p1f, p2f, p1, p2);
		return;
	}

	// put the crosspoint DIST_EPSILON pixels on the near side
	if (t1 < t2)
	{
		idist = 1.0/(t1-t2);
		side = 1;
		frac2 = (t1 + offset + DIST_EPSILON)*idist;
		frac = (t1 - offset + DIST_EPSILON)*idist;
	}
	else if (t1 > t2)
	{
		idist = 1.0/(t1-t2);
		side = 0;
		frac2 = (t1 - offset - DIST_EPSILON)*idist;
		frac = (t1 + offset + DIST_EPSILON)*idist;
	}
	else
	{
		side = 0;
		frac = 1;
		frac2 = 0;
	}

	// move up to the node
	if (frac < 0)
		frac = 0;
	if (frac > 1)
		frac = 1;

	midf = p1f + (p2f - p1f)*frac;
	for (i=0 ; i<3 ; i++)
		mid[i] = p1[i] + frac*(p2[i] - p1[i]);

	CM_RecursiveHullCheck (mod, node->childnum[side], p1f, midf, p1, mid);


	// go past the node
	if (frac2 < 0)
		frac2 = 0;
	if (frac2 > 1)
		frac2 = 1;

	midf = p1f + (p2f - p1f)*frac2;
	for (i=0 ; i<3 ; i++)
		mid[i] = p1[i] + frac2*(p2[i] - p1[i]);

	CM_RecursiveHullCheck (mod, node->childnum[side^1], midf, p2f, mid, p2);
}


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

/*
==================
CM_BoxTrace
==================
*/
trace_t		CM_BoxTrace (model_t *mod, vec3_t start, vec3_t end,
						  vec3_t mins, vec3_t maxs,
						  int brushmask)
{
	int		i;
#if ADJ
	int moved;
#endif
	vec3_t point;


	checkcount++;		// for multi-check avoidance

	c_traces++;			// for statistics, may be zeroed

	// fill in a default trace
	memset (&trace_trace, 0, sizeof(trace_trace));
	trace_truefraction = 1;
	trace_nearfraction = 1;
	trace_trace.fraction = 1;
	trace_trace.surface = &(nullsurface.c);

	if (!mod)	// map not loaded
		return trace_trace;

	trace_contents = brushmask;
	VectorCopy (start, trace_start);
	VectorCopy (end, trace_end);
	VectorCopy (mins, trace_mins);
	VectorCopy (maxs, trace_maxs);

	// build a bounding box of the entire move (for patches)
	ClearBounds (trace_absmins, trace_absmaxs);
	VectorAdd (start, trace_mins, point);
	AddPointToBounds (point, trace_absmins, trace_absmaxs);
	VectorAdd (start, trace_maxs, point);
	AddPointToBounds (point, trace_absmins, trace_absmaxs);
	VectorAdd (end, trace_mins, point);
	AddPointToBounds (point, trace_absmins, trace_absmaxs);
	VectorAdd (end, trace_maxs, point);
	AddPointToBounds (point, trace_absmins, trace_absmaxs);

	//
	// check for position test special case
	//
	if (start[0] == end[0] && start[1] == end[1] && start[2] == end[2])
	{
		int		leafs[1024];
		int		i, numleafs;
		vec3_t	c1, c2;
		int		topnode;
#if ADJ
		if (-mins[2] != maxs[2])	//be prepared to move the thing up to counter the different min/max
		{
			moved = (trace_maxs[2] - trace_mins[2])/2;
			trace_mins[2] = -moved;
			trace_maxs[2] = moved;
			trace_extents[2] = -trace_mins[2] > trace_maxs[2] ? -trace_mins[2] : trace_maxs[2];
			moved = (maxs[2] - trace_maxs[2]);
		}

		trace_start[2]+=moved;
		trace_end[2]+=moved;
#endif



		VectorAdd (start, mins, c1);
		VectorAdd (start, maxs, c2);
		for (i=0 ; i<3 ; i++)
		{
			c1[i] -= 1;
			c2[i] += 1;
		}

		numleafs = CM_BoxLeafnums_headnode (mod, c1, c2, leafs, sizeof(leafs)/sizeof(leafs[0]), mod->hulls[0].firstclipnode, &topnode);
		for (i=0 ; i<numleafs ; i++)
		{
			CM_TestInLeaf (leafs[i]);
			if (trace_trace.allsolid)
				break;
		}
		VectorCopy (start, trace_trace.endpos);
#if ADJ
		trace_trace.endpos[2] -= moved;
#endif
		return trace_trace;
	}
#if ADJ
	moved = 0;
#endif
	//
	// check for point special case
	//
	if (trace_mins[0] == 0 && trace_mins[1] == 0 && trace_mins[2] == 0
		&& trace_maxs[0] == 0 && trace_maxs[1] == 0 && trace_maxs[2] == 0)
	{
		trace_ispoint = true;
		VectorClear (trace_extents);
	}
	else
	{
		trace_ispoint = false;
		trace_extents[0] = -trace_mins[0] > trace_maxs[0] ? -trace_mins[0] : trace_maxs[0]+1;
		trace_extents[1] = -trace_mins[1] > trace_maxs[1] ? -trace_mins[1] : trace_maxs[1]+1;
		trace_extents[2] = -trace_mins[2] > trace_maxs[2] ? -trace_mins[2] : trace_maxs[2]+1;
#if ADJ
		if (-mins[2] != maxs[2])	//be prepared to move the thing up to counter the different min/max
		{
			moved = (trace_maxs[2] - trace_mins[2])/2;
			trace_mins[2] = -moved;
			trace_maxs[2] = moved;
			trace_extents[2] = -trace_mins[2] > trace_maxs[2] ? -trace_mins[2] : trace_maxs[2];
			moved = (maxs[2] - trace_maxs[2]);
		}

		trace_start[2]+=moved;
		trace_end[2]+=moved;
#endif
	}

	//
	// general sweeping through world
	//
	CM_RecursiveHullCheck (mod, mod->hulls[0].firstclipnode, 0, 1, trace_start, trace_end);

	if (trace_nearfraction == 1)
	{
		trace_trace.fraction = 1;
		VectorCopy (trace_end, trace_trace.endpos);
	}
	else
	{
		if (trace_nearfraction<0)
			trace_nearfraction=0;
		trace_trace.fraction = trace_nearfraction;
		for (i=0 ; i<3 ; i++)
			trace_trace.endpos[i] = trace_start[i] + trace_trace.fraction * (trace_end[i] - trace_start[i]);
	}
#if ADJ
	trace_trace.endpos[2] -= moved;
#endif
	return trace_trace;
}

qboolean CM_NativeTrace(model_t *model, int forcehullnum, int frame, vec3_t axis[3], vec3_t start, vec3_t end, vec3_t mins, vec3_t maxs, unsigned int contents, trace_t *trace)
{
	*trace = CM_BoxTrace(model, start, end, mins, maxs, contents);
	return trace->fraction != 1;
}

/*
==================
CM_TransformedBoxTrace

Handles offseting and rotation of the end points for moving and
rotating entities
==================
*/
#ifdef _MSC_VER
#pragma warning(disable : 4748)
#pragma optimize( "", off )
#endif

trace_t		CM_TransformedBoxTrace (model_t *mod, vec3_t start, vec3_t end,
						  vec3_t mins, vec3_t maxs,
						  int brushmask,
						  vec3_t origin, vec3_t angles)
{
#ifdef _MSC_VER
#pragma warning(default : 4748)
#endif
	trace_t		trace;
	vec3_t		start_l, end_l;
	vec3_t		a;
	vec3_t		forward, right, up;
	vec3_t		temp;
	qboolean	rotated;

	// subtract origin offset
	VectorSubtract (start, origin, start_l);
	VectorSubtract (end, origin, end_l);

	// rotate start and end into the models frame of reference
	if (mod != &box_model &&
	(angles[0] || angles[1] || angles[2]) )
		rotated = true;
	else
		rotated = false;

	if (rotated)
	{
		AngleVectors (angles, forward, right, up);

		VectorCopy (start_l, temp);
		start_l[0] = DotProduct (temp, forward);
		start_l[1] = -DotProduct (temp, right);
		start_l[2] = DotProduct (temp, up);

		VectorCopy (end_l, temp);
		end_l[0] = DotProduct (temp, forward);
		end_l[1] = -DotProduct (temp, right);
		end_l[2] = DotProduct (temp, up);
	}

	// sweep the box through the model
	trace = CM_BoxTrace (mod, start_l, end_l, mins, maxs, brushmask);

	if (rotated && trace.fraction != 1.0)
	{
		// FIXME: figure out how to do this with existing angles
		VectorNegate (angles, a);
		AngleVectors (a, forward, right, up);

		VectorCopy (trace.plane.normal, temp);
		trace.plane.normal[0] = DotProduct (temp, forward);
		trace.plane.normal[1] = -DotProduct (temp, right);
		trace.plane.normal[2] = DotProduct (temp, up);
	}

	if (trace.fraction == 1)
	{
		VectorCopy(end, trace.endpos);
	}
	else
	{
		trace.endpos[0] = start[0] + trace.fraction * (end[0] - start[0]);
		trace.endpos[1] = start[1] + trace.fraction * (end[1] - start[1]);
		trace.endpos[2] = start[2] + trace.fraction * (end[2] - start[2]);
	}

	return trace;
}

#ifdef _MSC_VER
#pragma optimize( "", on )
#endif



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

PVS / PHS

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

/*
===================
CM_DecompressVis
===================
*/

/*
qbyte *Mod_Q2DecompressVis (qbyte *in, model_t *model)
{
	static qbyte	decompressed[MAX_MAP_LEAFS/8];
	int		c;
	qbyte	*out;
	int		row;

	row = (model->vis->numclusters+7)>>3;
	out = decompressed;

	if (!in)
	{	// no vis info, so make all visible
		while (row)
		{
			*out++ = 0xff;
			row--;
		}
		return decompressed;
	}

	do
	{
		if (*in)
		{
			*out++ = *in++;
			continue;
		}

		c = in[1];
		in += 2;
		while (c)
		{
			*out++ = 0;
			c--;
		}
	} while (out - decompressed < row);

	return decompressed;
}

#define	DVIS_PVS	0
#define	DVIS_PHS	1
qbyte *Mod_ClusterPVS (int cluster, model_t *model)
{
	if (cluster == -1 || !model->vis)
		return mod_novis;
	return Mod_Q2DecompressVis ( (qbyte *)model->vis + model->vis->bitofs[cluster][DVIS_PVS],
		model);
}
*/
void CM_DecompressVis (qbyte *in, qbyte *out)
{
	int		c;
	qbyte	*out_p;
	int		row;

	row = (numclusters+7)>>3;
	out_p = out;

	if (!in || !numvisibility)
	{	// no vis info, so make all visible
		while (row)
		{
			*out_p++ = 0xff;
			row--;
		}
		return;
	}

	do
	{
		if (*in)
		{
			*out_p++ = *in++;
			continue;
		}

		c = in[1];
		in += 2;
		if ((out_p - out) + c > row)
		{
			c = row - (out_p - out);
			Con_DPrintf ("warning: Vis decompression overrun\n");
		}
		while (c)
		{
			*out_p++ = 0;
			c--;
		}
	} while (out_p - out < row);
}

qbyte	pvsrow[MAX_MAP_LEAFS/8];
qbyte	phsrow[MAX_MAP_LEAFS/8];



qbyte	*CM_ClusterPVS (model_t *mod, int cluster, qbyte *buffer, unsigned int buffersize)
{
	if (!buffer)
	{
		buffer = pvsrow;
		buffersize = sizeof(pvsrow);
	}
	if (buffersize < (numclusters+7)>>3)
		Sys_Error("CM_ClusterPVS with too small a buffer\n");

	if (mapisq3)
	{
		if (cluster != -1 && map_q3pvs->numclusters)
		{
			return (qbyte *)map_q3pvs->data + cluster * map_q3pvs->rowsize;
		}
		else
		{
			memset (buffer, 0, (numclusters+7)>>3);
			return buffer;
		}
	}

	if (cluster == -1)
		memset (buffer, 0, (numclusters+7)>>3);
	else
		CM_DecompressVis (map_visibility + map_q2vis->bitofs[cluster][DVIS_PVS], buffer);
	return buffer;
}

qbyte	*CM_ClusterPHS (model_t *mod, int cluster)
{
	if (mapisq3)	//phs not working yet.
	{
		if (cluster != -1 && map_q3phs->numclusters)
		{
			return (qbyte *)map_q3phs->data + cluster * map_q3phs->rowsize;
		}
		else
		{
			memset (phsrow, 0, (numclusters+7)>>3);
			return phsrow;
		}
	}

	if (cluster == -1)
		memset (phsrow, 0, (numclusters+7)>>3);
	else
		CM_DecompressVis (map_visibility + map_q2vis->bitofs[cluster][DVIS_PHS], phsrow);
	return phsrow;
}


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

AREAPORTALS

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

void FloodArea_r (q2carea_t *area, int floodnum)
{
	int		i;
	q2dareaportal_t	*p;

	if (area->floodvalid == floodvalid)
	{
		if (area->floodnum == floodnum)
			return;
		Host_Error ("FloodArea_r: reflooded");
	}

	area->floodnum = floodnum;
	area->floodvalid = floodvalid;
	p = &map_areaportals[area->firstareaportal];
	for (i=0 ; i<area->numareaportals ; i++, p++)
	{
		if (portalopen[p->portalnum])
			FloodArea_r (&map_q2areas[p->otherarea], floodnum);
	}
}

/*
====================
FloodAreaConnections


====================
*/
void	FloodAreaConnections (void)
{
	int		i, j;
	q2carea_t	*area;
	int		floodnum;

	if (mapisq3)
	{
		// area 0 is not used
		for (i=1 ; i<numareas ; i++)
		{
			for (  j = 1; j < numareas; j++ ) {
				map_q3areas[i].numareaportals[j] = ( j == i );
			}
		}
		return;
	}

	// all current floods are now invalid
	floodvalid++;
	floodnum = 0;

	// area 0 is not used
	for (i=1 ; i<numareas ; i++)
	{
		area = &map_q2areas[i];
		if (area->floodvalid == floodvalid)
			continue;		// already flooded into
		floodnum++;
		FloodArea_r (area, floodnum);
	}

}

void	VARGS CMQ2_SetAreaPortalState (int portalnum, qboolean open)
{
	if (mapisq3)
		Host_Error ("CMQ2_SetAreaPortalState on q3 map");
	if (portalnum > numareaportals)
		Host_Error ("areaportal > numareaportals");

	if (portalopen[portalnum] == open)
		return;
	portalopen[portalnum] = open;
	FloodAreaConnections ();

	return;
}

void	CMQ3_SetAreaPortalState (int area1, int area2, qboolean open)
{
	if (!mapisq3)
		return;
//		Host_Error ("CMQ3_SetAreaPortalState on non-q3 map");

	if (area1 > numareas || area2 > numareas)
		Host_Error ("CMQ3_SetAreaPortalState: area > numareas");

	if (open)
	{
		map_q3areas[area1].numareaportals[area2]++;
		map_q3areas[area2].numareaportals[area1]++;
	}
	else
	{
		map_q3areas[area1].numareaportals[area2]--;
		map_q3areas[area2].numareaportals[area1]--;
	}
}

qboolean	VARGS CM_AreasConnected (model_t *mod, int area1, int area2)
{
	if (map_noareas.value)
		return true;

	if (area1 > numareas || area2 > numareas)
		Host_Error ("area > numareas");

	if (mapisq3)
	{
		int		i;
		for (i=1 ; i<numareas ; i++)
		{
			if ( map_q3areas[i].numareaportals[area1] &&
				map_q3areas[i].numareaportals[area2] )
				return true;
		}
	}
	else
	{
		if (map_q2areas[area1].floodnum == map_q2areas[area2].floodnum)
			return true;
	}
	return false;
}


/*
=================
CM_WriteAreaBits

Writes a length qbyte followed by a bit vector of all the areas
that area in the same flood as the area parameter

This is used by the client refreshes to cull visibility
=================
*/
int CM_WriteAreaBits (model_t *mod, qbyte *buffer, int area)
{
	int		i;
	int		floodnum;
	int		bytes;

	bytes = (numareas+7)>>3;

	if (map_noareas.value)
	{	// for debugging, send everything
		memset (buffer, 255, bytes);
	}
	else
	{
		memset (buffer, 0, bytes);

		if (mapisq3)
		{
			for (i=0 ; i<numareas ; i++)
			{
				if (!area || CM_AreasConnected (mod, i, area ) || i == area)
					buffer[i>>3] |= 1<<(i&7);
			}
		}
		else
		{
			floodnum = map_q2areas[area].floodnum;
			for (i=0 ; i<numareas ; i++)
			{
				if (map_q2areas[i].floodnum == floodnum || !area)
					buffer[i>>3] |= 1<<(i&7);
			}
		}
	}

	return bytes;
}


/*
===================
CM_WritePortalState

Writes the portal state to a savegame file
===================
*/
void	CM_WritePortalState (FILE *f)
{
	fwrite (portalopen, sizeof(portalopen), 1, f);
}

/*
===================
CM_ReadPortalState

Reads the portal state from a savegame file
and recalculates the area connections
===================
*/
void	CM_ReadPortalState (FILE *f)
{
	size_t result;

	result = fread (portalopen, 1, sizeof(portalopen), f); // do something with result

	if (result != sizeof(portalopen))
		Con_Printf("CM_ReadPortalState() fread: expected %lu, result was %u\n",(long unsigned int)sizeof(portalopen),(unsigned int)result);

	FloodAreaConnections ();
}

/*
=============
CM_HeadnodeVisible

Returns true if any leaf under headnode has a cluster that
is potentially visible
=============
*/
qboolean CM_HeadnodeVisible (model_t *mod, int nodenum, qbyte *visbits)
{
	int		leafnum;
	int		cluster;
	mnode_t	*node;

	if (nodenum < 0)
	{
		leafnum = -1-nodenum;
		cluster = map_leafs[leafnum].cluster;
		if (cluster == -1)
			return false;
		if (visbits[cluster>>3] & (1<<(cluster&7)))
			return true;
		return false;
	}

	node = &mod->nodes[nodenum];
	if (CM_HeadnodeVisible(mod, node->childnum[0], visbits))
		return true;
	return CM_HeadnodeVisible(mod, node->childnum[1], visbits);
}

/*
qboolean Q2BSP_RecursiveHullCheck (hull_t *hull, int num, float p1f, float p2f, vec3_t p1, vec3_t p2, trace_t *trace)
{
	trace_t ret = CM_BoxTrace(p1, p2, hull->clip_mins, hull->clip_maxs, hull->firstclipnode, MASK_SOLID);
	memcpy(trace, &ret, sizeof(trace_t));
	if (ret.fraction==1)
		return true;
	return false;
}*/
unsigned int Q2BSP_PointContents(model_t *mod, vec3_t axis[3], vec3_t p)
{
	int pc, ret = FTECONTENTS_EMPTY;
	pc = CM_PointContents (mod, p);
	return pc;
}







int map_checksum;
qboolean Mod_LoadQ2BrushModel (model_t *mod, void *buffer)
{
	mod->fromgame = fg_quake2;
	return CM_LoadMap(mod->name, buffer, true, &map_checksum) != NULL;
}

void CM_Init(void)	//register cvars.
{
#define MAPOPTIONS "Map Cvar Options"
	Cvar_Register(&map_noareas, MAPOPTIONS);
	Cvar_Register(&map_noCurves, MAPOPTIONS);
	Cvar_Register(&map_autoopenportals, MAPOPTIONS);
	Cvar_Register(&r_subdivisions, MAPOPTIONS);
}
#endif