/*
============
ProcessModel
============
*/
bool ProcessModel( uEntity_t *e, bool floodFill ) {
bspface_t *faces;
// build a bsp tree using all of the sides
// of all of the structural brushes
faces = MakeStructuralBspFaceList ( e->primitives );
e->tree = FaceBSP( faces );
// create portals at every leaf intersection
// to allow flood filling
MakeTreePortals( e->tree );
// classify the leafs as opaque or areaportal
FilterBrushesIntoTree( e );
// see if the bsp is completely enclosed
if ( floodFill && !dmapGlobals.noFlood ) {
if ( FloodEntities( e->tree ) ) {
// set the outside leafs to opaque
FillOutside( e );
} else {
common->Printf ( "**********************\n" );
common->Warning( "******* leaked *******" );
common->Printf ( "**********************\n" );
LeakFile( e->tree );
// bail out here. If someone really wants to
// process a map that leaks, they should use
// -noFlood
return false;
}
}
// get minimum convex hulls for each visible side
// this must be done before creating area portals,
// because the visible hull is used as the portal
ClipSidesByTree( e );
// determine areas before clipping tris into the
// tree, so tris will never cross area boundaries
FloodAreas( e );
// we now have a BSP tree with solid and non-solid leafs marked with areas
// all primitives will now be clipped into this, throwing away
// fragments in the solid areas
PutPrimitivesInAreas( e );
// now build shadow volumes for the lights and split
// the optimize lists by the light beam trees
// so there won't be unneeded overdraw in the static
// case
Prelight( e );
// optimizing is a superset of fixing tjunctions
if ( !dmapGlobals.noOptimize ) {
OptimizeEntity( e );
} else if ( !dmapGlobals.noTJunc ) {
FixEntityTjunctions( e );
}
// now fix t junctions across areas
FixGlobalTjunctions( e );
return true;
}
/*
* ProcessWorldModel
*/
static void ProcessWorldModel(void){
entity_t *e;
tree_t *tree;
boolean_t leaked;
boolean_t optimize;
e = &entities[entity_num];
brush_start = e->first_brush;
brush_end = brush_start + e->num_brushes;
leaked = false;
// perform per-block operations
if(block_xh * 1024 > map_maxs[0])
block_xh = floor(map_maxs[0] / 1024.0);
if((block_xl + 1) * 1024 < map_mins[0])
block_xl = floor(map_mins[0] / 1024.0);
if(block_yh * 1024 > map_maxs[1])
block_yh = floor(map_maxs[1] / 1024.0);
if((block_yl + 1) * 1024 < map_mins[1])
block_yl = floor(map_mins[1] / 1024.0);
if(block_xl < -4)
block_xl = -4;
if(block_yl < -4)
block_yl = -4;
if(block_xh > 3)
block_xh = 3;
if(block_yh > 3)
block_yh = 3;
for(optimize = false; optimize <= true; optimize++){
Com_Verbose("--------------------------------------------\n");
RunThreadsOn((block_xh - block_xl + 1) * (block_yh - block_yl + 1),
!verbose, ProcessBlock_Thread);
// build the division tree
// oversizing the blocks guarantees that all the boundaries
// will also get nodes.
Com_Verbose("--------------------------------------------\n");
tree = AllocTree();
tree->head_node = BlockTree(block_xl - 1, block_yl - 1, block_xh + 1, block_yh + 1);
tree->mins[0] = (block_xl) * 1024;
tree->mins[1] = (block_yl) * 1024;
tree->mins[2] = map_mins[2] - 8;
tree->maxs[0] = (block_xh + 1) * 1024;
tree->maxs[1] = (block_yh + 1) * 1024;
tree->maxs[2] = map_maxs[2] + 8;
// perform the global operations
MakeTreePortals(tree);
if(FloodEntities(tree))
FillOutside(tree->head_node);
else {
leaked = true;
LeakFile(tree);
if(leaktest){
Com_Error(ERR_FATAL, "--- MAP LEAKED, ABORTING LEAKTEST ---\n");
}
Com_Verbose("**** leaked ****\n");
}
MarkVisibleSides(tree, brush_start, brush_end);
if(noopt || leaked)
break;
if(!optimize){
FreeTree(tree);
}
}
FloodAreas(tree);
MakeFaces(tree->head_node);
FixTjuncs(tree->head_node);
if(!noprune)
PruneNodes(tree->head_node);
WriteBSP(tree->head_node);
if(!leaked)
WritePortalFile(tree);
FreeTree(tree);
}
void ProcessWorldModel( void )
{
int i, s;
entity_t *e;
tree_t *tree;
face_t *faces;
qboolean ignoreLeaks, leaked;
xmlNodePtr polyline, leaknode;
char level[ 2 ], shader[ 1024 ];
const char *value;
/* sets integer blockSize from worldspawn "_blocksize" key if it exists */
value = ValueForKey( &entities[ 0 ], "_blocksize" );
if( value[ 0 ] == '\0' )
value = ValueForKey( &entities[ 0 ], "blocksize" );
if( value[ 0 ] == '\0' )
value = ValueForKey( &entities[ 0 ], "chopsize" ); /* sof2 */
if( value[ 0 ] != '\0' )
{
/* scan 3 numbers */
s = sscanf( value, "%d %d %d", &blockSize[ 0 ], &blockSize[ 1 ], &blockSize[ 2 ] );
/* handle legacy case */
if( s == 1 )
{
blockSize[ 1 ] = blockSize[ 0 ];
blockSize[ 2 ] = blockSize[ 0 ];
}
}
Sys_Printf( "block size = { %d %d %d }\n", blockSize[ 0 ], blockSize[ 1 ], blockSize[ 2 ] );
/* sof2: ignore leaks? */
value = ValueForKey( &entities[ 0 ], "_ignoreleaks" ); /* ydnar */
if( value[ 0 ] == '\0' )
value = ValueForKey( &entities[ 0 ], "ignoreleaks" );
if( value[ 0 ] == '1' )
ignoreLeaks = qtrue;
else
ignoreLeaks = qfalse;
/* begin worldspawn model */
BeginModel();
e = &entities[ 0 ];
e->firstDrawSurf = 0;
/* ydnar: gs mods */
ClearMetaTriangles();
/* check for patches with adjacent edges that need to lod together */
PatchMapDrawSurfs( e );
/* build an initial bsp tree using all of the sides of all of the structural brushes */
faces = MakeStructuralBSPFaceList( entities[ 0 ].brushes );
tree = FaceBSP( faces );
MakeTreePortals( tree );
FilterStructuralBrushesIntoTree( e, tree );
/* see if the bsp is completely enclosed */
if( FloodEntities( tree ) || ignoreLeaks )
{
/* rebuild a better bsp tree using only the sides that are visible from the inside */
FillOutside( tree->headnode );
/* chop the sides to the convex hull of their visible fragments, giving us the smallest polygons */
ClipSidesIntoTree( e, tree );
/* build a visible face tree */
faces = MakeVisibleBSPFaceList( entities[ 0 ].brushes );
FreeTree( tree );
tree = FaceBSP( faces );
MakeTreePortals( tree );
FilterStructuralBrushesIntoTree( e, tree );
leaked = qfalse;
/* ydnar: flood again for skybox */
if( skyboxPresent )
FloodEntities( tree );
}
else
{
Sys_FPrintf( SYS_NOXML, "**********************\n" );
Sys_FPrintf( SYS_NOXML, "******* leaked *******\n" );
Sys_FPrintf( SYS_NOXML, "**********************\n" );
polyline = LeakFile( tree );
leaknode = xmlNewNode( NULL, "message" );
xmlNodeSetContent( leaknode, "MAP LEAKED\n" );
xmlAddChild( leaknode, polyline );
level[0] = (int) '0' + SYS_ERR;
level[1] = 0;
xmlSetProp( leaknode, "level", (char*) &level );
xml_SendNode( leaknode );
if( leaktest )
{
Sys_Printf ("--- MAP LEAKED, ABORTING LEAKTEST ---\n");
exit( 0 );
}
leaked = qtrue;
/* chop the sides to the convex hull of their visible fragments, giving us the smallest polygons */
ClipSidesIntoTree( e, tree );
}
/* save out information for visibility processing */
NumberClusters( tree );
if( !leaked )
WritePortalFile( tree );
/* flood from entities */
FloodAreas( tree );
/* create drawsurfs for triangle models */
AddTriangleModels( e );
/* create drawsurfs for surface models */
AddEntitySurfaceModels( e );
/* generate bsp brushes from map brushes */
EmitBrushes( e->brushes, &e->firstBrush, &e->numBrushes );
/* add references to the detail brushes */
FilterDetailBrushesIntoTree( e, tree );
/* drawsurfs that cross fog boundaries will need to be split along the fog boundary */
if( !nofog )
FogDrawSurfaces( e );
/* subdivide each drawsurf as required by shader tesselation */
if( !nosubdivide )
SubdivideFaceSurfaces( e, tree );
/* add in any vertexes required to fix t-junctions */
if( !notjunc )
FixTJunctions( e );
/* ydnar: classify the surfaces */
ClassifyEntitySurfaces( e );
/* ydnar: project decals */
MakeEntityDecals( e );
/* ydnar: meta surfaces */
MakeEntityMetaTriangles( e );
SmoothMetaTriangles();
FixMetaTJunctions();
MergeMetaTriangles();
/* ydnar: debug portals */
if( debugPortals )
MakeDebugPortalSurfs( tree );
/* ydnar: fog hull */
value = ValueForKey( &entities[ 0 ], "_foghull" );
if( value[ 0 ] != '\0' )
{
sprintf( shader, "textures/%s", value );
MakeFogHullSurfs( e, tree, shader );
}
/* ydnar: bug 645: do flares for lights */
for( i = 0; i < numEntities && emitFlares; i++ )
{
entity_t *light, *target;
const char *value, *flareShader;
vec3_t origin, targetOrigin, normal, color;
int lightStyle;
/* get light */
light = &entities[ i ];
value = ValueForKey( light, "classname" );
if( !strcmp( value, "light" ) )
{
/* get flare shader */
flareShader = ValueForKey( light, "_flareshader" );
value = ValueForKey( light, "_flare" );
if( flareShader[ 0 ] != '\0' || value[ 0 ] != '\0' )
{
/* get specifics */
GetVectorForKey( light, "origin", origin );
GetVectorForKey( light, "_color", color );
lightStyle = IntForKey( light, "_style" );
if( lightStyle == 0 )
lightStyle = IntForKey( light, "style" );
/* handle directional spotlights */
value = ValueForKey( light, "target" );
if( value[ 0 ] != '\0' )
{
/* get target light */
target = FindTargetEntity( value );
if( target != NULL )
{
GetVectorForKey( target, "origin", targetOrigin );
VectorSubtract( targetOrigin, origin, normal );
VectorNormalize( normal, normal );
}
}
else
//% VectorClear( normal );
VectorSet( normal, 0, 0, -1 );
/* create the flare surface (note shader defaults automatically) */
DrawSurfaceForFlare( mapEntityNum, origin, normal, color, (char*) flareShader, lightStyle );
}
}
}
/* add references to the final drawsurfs in the apropriate clusters */
FilterDrawsurfsIntoTree( e, tree );
/* match drawsurfaces back to original brushsides (sof2) */
FixBrushSides( e );
/* finish */
EndModel( e, tree->headnode );
FreeTree( tree );
}
/*
============
ProcessWorldModel
============
*/
void ProcessWorldModel (void)
{
entity_t *e;
tree_t *tree;
qboolean leaked;
qboolean optimize;
e = &entities[entity_num];
brush_start = e->firstbrush;
brush_end = brush_start + e->numbrushes;
leaked = false;
//
// perform per-block operations
//
if (block_xh * 1024 > map_maxs[0])
block_xh = floor(map_maxs[0]/1024.0);
if ( (block_xl+1) * 1024 < map_mins[0])
block_xl = floor(map_mins[0]/1024.0);
if (block_yh * 1024 > map_maxs[1])
block_yh = floor(map_maxs[1]/1024.0);
if ( (block_yl+1) * 1024 < map_mins[1])
block_yl = floor(map_mins[1]/1024.0);
if (block_xl <-4)
block_xl = -4;
if (block_yl <-4)
block_yl = -4;
if (block_xh > 3)
block_xh = 3;
if (block_yh > 3)
block_yh = 3;
for (optimize = false ; optimize <= true ; optimize++)
{
qprintf ("--------------------------------------------\n");
RunThreadsOnIndividual ((block_xh-block_xl+1)*(block_yh-block_yl+1),
!verbose, ProcessBlock_Thread);
//
// build the division tree
// oversizing the blocks guarantees that all the boundaries
// will also get nodes.
//
qprintf ("--------------------------------------------\n");
tree = AllocTree ();
tree->headnode = BlockTree (block_xl-1, block_yl-1, block_xh+1, block_yh+1);
tree->mins[0] = (block_xl)*1024;
tree->mins[1] = (block_yl)*1024;
tree->mins[2] = map_mins[2] - 8;
tree->maxs[0] = (block_xh+1)*1024;
tree->maxs[1] = (block_yh+1)*1024;
tree->maxs[2] = map_maxs[2] + 8;
//
// perform the global operations
//
MakeTreePortals (tree);
if (FloodEntities (tree))
FillOutside (tree->headnode);
else
{
printf ("**** leaked ****\n");
leaked = true;
LeakFile (tree);
if (leaktest)
{
printf ("--- MAP LEAKED ---\n");
exit (0);
}
}
MarkVisibleSides (tree, brush_start, brush_end);
if (noopt || leaked)
break;
if (!optimize)
{
FreeTree (tree);
}
}
FloodAreas (tree);
if (glview)
WriteGLView (tree, source);
MakeFaces (tree->headnode);
FixTjuncs (tree->headnode);
if (!noprune)
PruneNodes (tree->headnode);
WriteBSP (tree->headnode);
if (!leaked)
WritePortalFile (tree);
FreeTree (tree);
}
void ProcessWorldModel (void)
{
entity_t *e;
tree_t *tree = NULL;
qboolean leaked;
int optimize;
int start;
e = &entities[entity_num];
brush_start = e->firstbrush;
brush_end = brush_start + e->numbrushes;
leaked = false;
//
// perform per-block operations
//
if (block_xh * BLOCKS_SIZE > g_MainMap->map_maxs[0])
{
block_xh = floor(g_MainMap->map_maxs[0]/BLOCKS_SIZE);
}
if ( (block_xl+1) * BLOCKS_SIZE < g_MainMap->map_mins[0])
{
block_xl = floor(g_MainMap->map_mins[0]/BLOCKS_SIZE);
}
if (block_yh * BLOCKS_SIZE > g_MainMap->map_maxs[1])
{
block_yh = floor(g_MainMap->map_maxs[1]/BLOCKS_SIZE);
}
if ( (block_yl+1) * BLOCKS_SIZE < g_MainMap->map_mins[1])
{
block_yl = floor(g_MainMap->map_mins[1]/BLOCKS_SIZE);
}
// HLTOOLS: updated to +/- MAX_COORD_INTEGER ( new world size limits / worldsize.h )
if (block_xl < BLOCKS_MIN)
{
block_xl = BLOCKS_MIN;
}
if (block_yl < BLOCKS_MIN)
{
block_yl = BLOCKS_MIN;
}
if (block_xh > BLOCKS_MAX)
{
block_xh = BLOCKS_MAX;
}
if (block_yh > BLOCKS_MAX)
{
block_yh = BLOCKS_MAX;
}
for (optimize = 0 ; optimize <= 1 ; optimize++)
{
qprintf ("--------------------------------------------\n");
RunThreadsOnIndividual ((block_xh-block_xl+1)*(block_yh-block_yl+1),
!verbose, ProcessBlock_Thread);
//
// build the division tree
// oversizing the blocks guarantees that all the boundaries
// will also get nodes.
//
qprintf ("--------------------------------------------\n");
tree = AllocTree ();
tree->headnode = BlockTree (block_xl-1, block_yl-1, block_xh+1, block_yh+1);
tree->mins[0] = (block_xl)*BLOCKS_SIZE;
tree->mins[1] = (block_yl)*BLOCKS_SIZE;
tree->mins[2] = g_MainMap->map_mins[2] - 8;
tree->maxs[0] = (block_xh+1)*BLOCKS_SIZE;
tree->maxs[1] = (block_yh+1)*BLOCKS_SIZE;
tree->maxs[2] = g_MainMap->map_maxs[2] + 8;
//
// perform the global operations
//
// make the portals/faces by traversing down to each empty leaf
MakeTreePortals (tree);
if (FloodEntities (tree))
{
// turns everthing outside into solid
FillOutside (tree->headnode);
}
else
{
Warning( ("**** leaked ****\n") );
leaked = true;
LeakFile (tree);
if (leaktest)
{
Warning( ("--- MAP LEAKED ---\n") );
exit (0);
}
}
// mark the brush sides that actually turned into faces
MarkVisibleSides (tree, brush_start, brush_end, NO_DETAIL);
if (noopt || leaked)
break;
if (!optimize)
{
// If we are optimizing, free the tree. Next time we will construct it again, but
// we'll use the information in MarkVisibleSides() so we'll only split with planes that
// actually contribute renderable geometry
FreeTree (tree);
}
}
FloodAreas (tree);
RemoveAreaPortalBrushes_R( tree->headnode );
start = Plat_FloatTime();
Msg("Building Faces...");
// this turns portals with one solid side into faces
// it also subdivides each face if necessary to fit max lightmap dimensions
MakeFaces (tree->headnode);
Msg("done (%d)\n", (int)(Plat_FloatTime() - start) );
if (glview)
{
WriteGLView (tree, source);
}
AssignOccluderAreas( tree );
Compute3DSkyboxAreas( tree->headnode, g_SkyAreas );
face_t *pLeafFaceList = NULL;
if ( !nodetail )
{
pLeafFaceList = MergeDetailTree( tree, brush_start, brush_end );
}
start = Plat_FloatTime();
Msg("FixTjuncs...\n");
// This unifies the vertex list for all edges (splits collinear edges to remove t-junctions)
// It also welds the list of vertices out of each winding/portal and rounds nearly integer verts to integer
pLeafFaceList = FixTjuncs (tree->headnode, pLeafFaceList);
// this merges all of the solid nodes that have separating planes
if (!noprune)
{
Msg("PruneNodes...\n");
PruneNodes (tree->headnode);
}
// Msg( "SplitSubdividedFaces...\n" );
// SplitSubdividedFaces( tree->headnode );
Msg("WriteBSP...\n");
WriteBSP (tree->headnode, pLeafFaceList);
Msg("done (%d)\n", (int)(Plat_FloatTime() - start) );
if (!leaked)
{
WritePortalFile (tree);
}
FreeTree( tree );
FreeLeafFaces( pLeafFaceList );
}
/*
============
ProcessWorldModel
============
*/
void ProcessWorldModel( void ) {
entity_t *e;
tree_t *tree;
bspface_t *faces;
qboolean leaked;
BeginModel();
e = &entities[0];
e->firstDrawSurf = 0;//numMapDrawSurfs;
// check for patches with adjacent edges that need to LOD together
PatchMapDrawSurfs( e );
// build an initial bsp tree using all of the sides
// of all of the structural brushes
faces = MakeStructuralBspFaceList ( entities[0].brushes );
tree = FaceBSP( faces );
MakeTreePortals (tree);
FilterStructuralBrushesIntoTree( e, tree );
// see if the bsp is completely enclosed
if ( FloodEntities (tree) ) {
// rebuild a better bsp tree using only the
// sides that are visible from the inside
FillOutside (tree->headnode);
// chop the sides to the convex hull of
// their visible fragments, giving us the smallest
// polygons
ClipSidesIntoTree( e, tree );
faces = MakeVisibleBspFaceList( entities[0].brushes );
FreeTree (tree);
tree = FaceBSP( faces );
MakeTreePortals( tree );
FilterStructuralBrushesIntoTree( e, tree );
leaked = qfalse;
} else {
_printf ("**********************\n");
_printf ("******* leaked *******\n");
_printf ("**********************\n");
LeakFile (tree);
if ( leaktest ) {
_printf ("--- MAP LEAKED, ABORTING LEAKTEST ---\n");
exit (0);
}
leaked = qtrue;
// chop the sides to the convex hull of
// their visible fragments, giving us the smallest
// polygons
ClipSidesIntoTree( e, tree );
}
// save out information for visibility processing
NumberClusters( tree );
if ( !leaked ) {
WritePortalFile( tree );
}
if ( glview ) {
// dump the portals for debugging
WriteGLView( tree, source );
}
FloodAreas (tree);
// add references to the detail brushes
FilterDetailBrushesIntoTree( e, tree );
// create drawsurfs for triangle models
AddTriangleModels( tree );
// drawsurfs that cross fog boundaries will need to
// be split along the bound
if ( !nofog ) {
FogDrawSurfs(); // may fragment drawsurfs
}
// subdivide each drawsurf as required by shader tesselation
if ( !nosubdivide ) {
SubdivideDrawSurfs( e, tree );
}
// merge together all common shaders on the same plane and remove
// all colinear points, so extra tjunctions won't be generated
if ( !nomerge ) {
MergeSides( e, tree ); // !@# testing
}
// add in any vertexes required to fix tjunctions
if ( !notjunc ) {
FixTJunctions( e );
}
// allocate lightmaps for faces and patches
AllocateLightmaps( e );
// add references to the final drawsurfs in the apropriate clusters
FilterDrawsurfsIntoTree( e, tree );
EndModel( tree->headnode );
FreeTree (tree);
}
/*
============
ProcessWorldModel
============
*/
void ProcessWorldModel(void)
{
int s;
entity_t *e;
tree_t *tree;
bspFace_t *faces;
qboolean leaked;
xmlNodePtr polyline, leaknode;
char level[2];
const char *value;
e = &entities[0];
e->firstDrawSurf = 0; //numMapDrawSurfs;
// sets integer blockSize from worldspawn "_blocksize" key if it exists
value = ValueForKey(e, "_blocksize");
if(value[0] == '\0')
value = ValueForKey(e, "blocksize");
if(value[0] == '\0')
value = ValueForKey(e, "chopsize"); // sof2
if(value[0] != '\0')
{
// scan 3 numbers
s = sscanf(value, "%d %d %d", &blockSize[0], &blockSize[1], &blockSize[2]);
// handle legacy case
if(s == 1)
{
blockSize[1] = blockSize[0];
blockSize[2] = blockSize[0];
}
}
Sys_Printf("block size = { %d %d %d }\n", blockSize[0], blockSize[1], blockSize[2]);
BeginModel(e);
// check for patches with adjacent edges that need to LOD together
PatchMapDrawSurfs(e);
// build an initial bsp tree using all of the sides
// of all of the structural brushes
faces = MakeStructuralBspFaceList(entities[0].brushes);
tree = FaceBSP(faces);
MakeTreePortals(tree);
FilterStructuralBrushesIntoTree(e, tree);
if(drawFlag)
{
// draw unoptimized portals in new window
drawTree = tree;
Draw_Scene(DrawTree);
}
// see if the bsp is completely enclosed
if(FloodEntities(tree))
{
// rebuild a better bsp tree using only the
// sides that are visible from the inside
FillOutside(tree->headnode);
// chop the sides to the convex hull of
// their visible fragments, giving us the smallest
// polygons
ClipSidesIntoTree(e, tree);
faces = MakeVisibleBspFaceList(entities[0].brushes);
FreeTree(tree);
tree = FaceBSP(faces);
MakeTreePortals(tree);
FilterStructuralBrushesIntoTree(e, tree);
leaked = qfalse;
}
else
{
Sys_FPrintf(SYS_NOXML, "**********************\n");
Sys_FPrintf(SYS_NOXML, "******* leaked *******\n");
Sys_FPrintf(SYS_NOXML, "**********************\n");
polyline = LeakFile(tree);
leaknode = xmlNewNode(NULL, "message");
xmlNodeSetContent(leaknode, "MAP LEAKED\n");
xmlAddChild(leaknode, polyline);
level[0] = (int)'0' + SYS_ERR;
level[1] = 0;
xmlSetProp(leaknode, "level", (char *)&level);
xml_SendNode(leaknode);
if(leaktest)
{
Sys_Printf("--- MAP LEAKED, ABORTING LEAKTEST ---\n");
exit(0);
}
leaked = qtrue;
// chop the sides to the convex hull of
// their visible fragments, giving us the smallest
// polygons
ClipSidesIntoTree(e, tree);
}
// save out information for visibility processing
NumberClusters(tree);
if(!leaked)
{
WritePortalFile(tree);
}
if(glview)
{
// dump the portals for debugging
WriteGLView(tree, source);
}
FloodAreas(tree);
if(drawFlag)
{
// draw optimized portals in new window
drawTree = tree;
Draw_Scene(DrawTree);
}
// add references to the detail brushes
FilterDetailBrushesIntoTree(e, tree);
// create drawsurfs for triangle models
AddTriangleModels();
// drawsurfs that cross fog boundaries will need to
// be split along the bound
if(!nofog)
{
FogDrawSurfs(); // may fragment drawsurfs
}
// subdivide each drawsurf as required by shader tesselation
if(!nosubdivide)
{
SubdivideDrawSurfs(e, tree);
}
// merge together all common shaders on the same plane and remove
// all colinear points, so extra tjunctions won't be generated
if(!nomerge)
{
MergeSides(e, tree); // !@# testing
}
// add in any vertexes required to fix tjunctions
if(!notjunc)
{
FixTJunctions(e);
}
// allocate lightmaps for faces and patches
AllocateLightmaps(e);
// add references to the final drawsurfs in the apropriate clusters
FilterDrawsurfsIntoTree(e, tree);
EndModel(e, tree->headnode);
FreeTree(tree);
}