/*
================
DrawSurfaceForMesh
================
*/
mapDrawSurface_t *DrawSurfaceForMesh( mesh_t *m ) {
mapDrawSurface_t *ds;
int i, j;
mesh_t *copy;
// to make valid normals for patches with degenerate edges,
// we need to make a copy of the mesh and put the aproximating
// points onto the curve
copy = CopyMesh( m );
PutMeshOnCurve( *copy );
MakeMeshNormals( *copy );
for ( j = 0 ; j < m->width ; j++ ) {
for ( i = 0 ; i < m->height ; i++ ) {
VectorCopy( copy->verts[i*m->width+j].normal, m->verts[i*m->width+j].normal );
}
}
FreeMesh( copy );
ds = AllocDrawSurf();
ds->mapBrush = NULL;
ds->side = NULL;
ds->patch = qtrue;
ds->patchWidth = m->width;
ds->patchHeight = m->height;
ds->numVerts = ds->patchWidth * ds->patchHeight;
ds->verts = malloc( ds->numVerts * sizeof( *ds->verts ) );
memcpy( ds->verts, m->verts, ds->numVerts * sizeof( *ds->verts ) );
ds->lightmapNum = -1;
ds->fogNum = -1;
return ds;
}
/*
====================
FacetsForPatch
====================
*/
void FacetsForPatch( dsurface_t *dsurf, shaderInfo_t *si, surfaceTest_t *test ) {
int i, j;
drawVert_t *v1, *v2, *v3, *v4;
int count;
mesh_t srcMesh, *subdivided, *mesh;
srcMesh.width = dsurf->patchWidth;
srcMesh.height = dsurf->patchHeight;
srcMesh.verts = &drawVerts[ dsurf->firstVert ];
//subdivided = SubdivideMesh( mesh, CURVE_FACET_ERROR, 9999 );
mesh = SubdivideMesh( srcMesh, 8, 999 );
PutMeshOnCurve( *mesh );
MakeMeshNormals( *mesh );
subdivided = RemoveLinearMeshColumnsRows( mesh );
FreeMesh(mesh);
test->patch = qtrue;
test->numFacets = ( subdivided->width - 1 ) * ( subdivided->height - 1 ) * 2;
test->facets = malloc( sizeof( test->facets[0] ) * test->numFacets );
test->shader = si;
count = 0;
for ( i = 0 ; i < subdivided->width - 1 ; i++ ) {
for ( j = 0 ; j < subdivided->height - 1 ; j++ ) {
v1 = subdivided->verts + j * subdivided->width + i;
v2 = v1 + 1;
v3 = v1 + subdivided->width + 1;
v4 = v1 + subdivided->width;
if ( CM_GenerateFacetFor4Points( &test->facets[count], v1, v4, v3, v2 ) ) {
count++;
} else {
if (CM_GenerateFacetFor3Points( &test->facets[count], v1, v4, v3 ))
count++;
if (CM_GenerateFacetFor3Points( &test->facets[count], v1, v3, v2 ))
count++;
}
}
}
test->numFacets = count;
FreeMesh(subdivided);
}
void AllocateLightmapForPatch( mapDrawSurface_t *ds ) {
int i, j, k;
drawVert_t *verts;
int w, h;
int x, y;
float s, t;
mesh_t mesh, *subdividedMesh, *tempMesh, *newmesh;
int widthtable[LIGHTMAP_WIDTH], heighttable[LIGHTMAP_HEIGHT], ssize;
verts = ds->verts;
mesh.width = ds->patchWidth;
mesh.height = ds->patchHeight;
mesh.verts = verts;
newmesh = SubdivideMesh( mesh, 8, 999 );
PutMeshOnCurve( *newmesh );
tempMesh = RemoveLinearMeshColumnsRows( newmesh );
FreeMesh(newmesh);
ssize = samplesize;
if (ds->shaderInfo->lightmapSampleSize)
ssize = ds->shaderInfo->lightmapSampleSize;
#ifdef LIGHTMAP_PATCHSHIFT
subdividedMesh = SubdivideMeshQuads( tempMesh, ssize, LIGHTMAP_WIDTH-1, widthtable, heighttable);
#else
subdividedMesh = SubdivideMeshQuads( tempMesh, ssize, LIGHTMAP_WIDTH, widthtable, heighttable);
#endif
w = subdividedMesh->width;
h = subdividedMesh->height;
#ifdef LIGHTMAP_PATCHSHIFT
w++;
h++;
#endif
FreeMesh(subdividedMesh);
// allocate the lightmap
c_exactLightmap += w * h;
if ( !AllocLMBlock( w, h, &x, &y ) ) {
PrepareNewLightmap();
if ( !AllocLMBlock( w, h, &x, &y ) ) {
Error("Entity %i, brush %i: Lightmap allocation failed",
ds->mapBrush->entitynum, ds->mapBrush->brushnum );
}
}
#ifdef LIGHTMAP_PATCHSHIFT
w--;
h--;
#endif
// set the lightmap texture coordinates in the drawVerts
ds->lightmapNum = numLightmaps - 1;
ds->lightmapWidth = w;
ds->lightmapHeight = h;
ds->lightmapX = x;
ds->lightmapY = y;
for ( i = 0 ; i < ds->patchWidth ; i++ ) {
for ( k = 0 ; k < w ; k++ ) {
if ( originalWidths[k] >= i ) {
break;
}
}
if (k >= w)
k = w-1;
s = x + k;
for ( j = 0 ; j < ds->patchHeight ; j++ ) {
for ( k = 0 ; k < h ; k++ ) {
if ( originalHeights[k] >= j ) {
break;
}
}
if (k >= h)
k = h-1;
t = y + k;
verts[i + j * ds->patchWidth].lightmap[0] = ( s + 0.5 ) / LIGHTMAP_WIDTH;
verts[i + j * ds->patchWidth].lightmap[1] = ( t + 0.5 ) / LIGHTMAP_HEIGHT;
}
}
}
static void PopulateWithBSPModel(bspModel_t * model, matrix_t transform)
{
int i, j, x, y, pw[5], r, nodeNum;
bspDrawSurface_t *ds;
surfaceInfo_t *info;
bspDrawVert_t *verts;
int *indexes;
mesh_t srcMesh, *mesh, *subdivided;
traceInfo_t ti;
traceWinding_t tw;
/* dummy check */
if(model == NULL || transform == NULL)
return;
/* walk the list of surfaces in this model and fill out the info structs */
for(i = 0; i < model->numBSPSurfaces; i++)
{
/* get surface and info */
ds = &bspDrawSurfaces[model->firstBSPSurface + i];
info = &surfaceInfos[model->firstBSPSurface + i];
if(info->si == NULL)
continue;
/* no shadows */
if(!info->castShadows)
continue;
/* patchshadows? */
if(ds->surfaceType == MST_PATCH && patchShadows == qfalse)
continue;
/* some surfaces in the bsp might have been tagged as nodraw, with a bogus shader */
if((bspShaders[ds->shaderNum].contentFlags & noDrawContentFlags) ||
(bspShaders[ds->shaderNum].surfaceFlags & noDrawSurfaceFlags))
continue;
/* translucent surfaces that are neither alphashadow or lightfilter don't cast shadows */
if((info->si->compileFlags & C_NODRAW))
continue;
if((info->si->compileFlags & C_TRANSLUCENT) &&
!(info->si->compileFlags & C_ALPHASHADOW) && !(info->si->compileFlags & C_LIGHTFILTER))
continue;
/* setup trace info */
ti.si = info->si;
ti.castShadows = info->castShadows;
ti.surfaceNum = model->firstBSPBrush + i;
ti.skipGrid = (ds->surfaceType == MST_PATCH);
/* choose which node (normal or skybox) */
if(info->parentSurfaceNum >= 0)
{
nodeNum = skyboxNodeNum;
/* sky surfaces in portal skies are ignored */
if(info->si->compileFlags & C_SKY)
continue;
}
else
nodeNum = headNodeNum;
/* setup trace winding */
memset(&tw, 0, sizeof(tw));
tw.infoNum = AddTraceInfo(&ti);
tw.numVerts = 3;
/* switch on type */
switch (ds->surfaceType)
{
/* handle patches */
case MST_PATCH:
/* subdivide the surface */
srcMesh.width = ds->patchWidth;
srcMesh.height = ds->patchHeight;
srcMesh.verts = &bspDrawVerts[ds->firstVert];
//% subdivided = SubdivideMesh( srcMesh, 8, 512 );
subdivided = SubdivideMesh2(srcMesh, info->patchIterations);
/* fit it to the curve and remove colinear verts on rows/columns */
PutMeshOnCurve(*subdivided);
mesh = RemoveLinearMeshColumnsRows(subdivided);
FreeMesh(subdivided);
/* set verts */
verts = mesh->verts;
/* subdivide each quad to place the models */
for(y = 0; y < (mesh->height - 1); y++)
{
for(x = 0; x < (mesh->width - 1); x++)
{
/* set indexes */
pw[0] = x + (y * mesh->width);
pw[1] = x + ((y + 1) * mesh->width);
pw[2] = x + 1 + ((y + 1) * mesh->width);
pw[3] = x + 1 + (y * mesh->width);
pw[4] = x + (y * mesh->width); /* same as pw[ 0 ] */
/* set radix */
r = (x + y) & 1;
/* make first triangle */
VectorCopy(verts[pw[r + 0]].xyz, tw.v[0].xyz);
Vector2Copy(verts[pw[r + 0]].st, tw.v[0].st);
VectorCopy(verts[pw[r + 1]].xyz, tw.v[1].xyz);
Vector2Copy(verts[pw[r + 1]].st, tw.v[1].st);
VectorCopy(verts[pw[r + 2]].xyz, tw.v[2].xyz);
Vector2Copy(verts[pw[r + 2]].st, tw.v[2].st);
MatrixTransformPoint2(transform, tw.v[0].xyz);
MatrixTransformPoint2(transform, tw.v[1].xyz);
MatrixTransformPoint2(transform, tw.v[2].xyz);
FilterTraceWindingIntoNodes_r(&tw, nodeNum);
/* make second triangle */
VectorCopy(verts[pw[r + 0]].xyz, tw.v[0].xyz);
Vector2Copy(verts[pw[r + 0]].st, tw.v[0].st);
VectorCopy(verts[pw[r + 2]].xyz, tw.v[1].xyz);
Vector2Copy(verts[pw[r + 2]].st, tw.v[1].st);
VectorCopy(verts[pw[r + 3]].xyz, tw.v[2].xyz);
Vector2Copy(verts[pw[r + 3]].st, tw.v[2].st);
MatrixTransformPoint2(transform, tw.v[0].xyz);
MatrixTransformPoint2(transform, tw.v[1].xyz);
MatrixTransformPoint2(transform, tw.v[2].xyz);
FilterTraceWindingIntoNodes_r(&tw, nodeNum);
}
}
/* free the subdivided mesh */
FreeMesh(mesh);
break;
/* handle triangle surfaces */
case MST_TRIANGLE_SOUP:
case MST_PLANAR:
/* set verts and indexes */
verts = &bspDrawVerts[ds->firstVert];
indexes = &bspDrawIndexes[ds->firstIndex];
/* walk the triangle list */
for(j = 0; j < ds->numIndexes; j += 3)
{
VectorCopy(verts[indexes[j]].xyz, tw.v[0].xyz);
Vector2Copy(verts[indexes[j]].st, tw.v[0].st);
VectorCopy(verts[indexes[j + 1]].xyz, tw.v[1].xyz);
Vector2Copy(verts[indexes[j + 1]].st, tw.v[1].st);
VectorCopy(verts[indexes[j + 2]].xyz, tw.v[2].xyz);
Vector2Copy(verts[indexes[j + 2]].st, tw.v[2].st);
MatrixTransformPoint2(transform, tw.v[0].xyz);
MatrixTransformPoint2(transform, tw.v[1].xyz);
MatrixTransformPoint2(transform, tw.v[2].xyz);
FilterTraceWindingIntoNodes_r(&tw, nodeNum);
}
break;
/* other surface types do not cast shadows */
default:
break;
}
}
}
void RadLightForPatch( int num, int lightmapNum, rawLightmap_t *lm, shaderInfo_t *si, float scale, float subdivide, clipWork_t *cw )
{
int i, x, y, v, t, pw[ 5 ], r;
bspDrawSurface_t *ds;
surfaceInfo_t *info;
bspDrawVert_t *bogus;
bspDrawVert_t *dv[ 4 ];
mesh_t src, *subdivided, *mesh;
float *radVertexLuxel;
float dist;
vec4_t plane;
qboolean planar;
radWinding_t rw;
/* get surface */
ds = &bspDrawSurfaces[ num ];
info = &surfaceInfos[ num ];
/* construct a bogus vert list with color index stuffed into color[ 0 ] */
bogus = safe_malloc( ds->numVerts * sizeof( bspDrawVert_t ) );
memcpy( bogus, &yDrawVerts[ ds->firstVert ], ds->numVerts * sizeof( bspDrawVert_t ) );
for( i = 0; i < ds->numVerts; i++ )
bogus[ i ].color[ 0 ][ 0 ] = i;
/* build a subdivided mesh identical to shadow facets for this patch */
/* this MUST MATCH FacetsForPatch() identically! */
src.width = ds->patchWidth;
src.height = ds->patchHeight;
src.verts = bogus;
//% subdivided = SubdivideMesh( src, 8, 512 );
subdivided = SubdivideMesh2( src, info->patchIterations );
PutMeshOnCurve( *subdivided );
//% MakeMeshNormals( *subdivided );
mesh = RemoveLinearMeshColumnsRows( subdivided );
FreeMesh( subdivided );
free( bogus );
/* FIXME: build interpolation table into color[ 1 ] */
/* fix up color indexes */
for( i = 0; i < (mesh->width * mesh->height); i++ )
{
dv[ 0 ] = &mesh->verts[ i ];
if( dv[ 0 ]->color[ 0 ][ 0 ] >= ds->numVerts )
dv[ 0 ]->color[ 0 ][ 0 ] = ds->numVerts - 1;
}
/* iterate through the mesh quads */
for( y = 0; y < (mesh->height - 1); y++ )
{
for( x = 0; x < (mesh->width - 1); x++ )
{
/* set indexes */
pw[ 0 ] = x + (y * mesh->width);
pw[ 1 ] = x + ((y + 1) * mesh->width);
pw[ 2 ] = x + 1 + ((y + 1) * mesh->width);
pw[ 3 ] = x + 1 + (y * mesh->width);
pw[ 4 ] = x + (y * mesh->width); /* same as pw[ 0 ] */
/* set radix */
r = (x + y) & 1;
/* get drawverts */
dv[ 0 ] = &mesh->verts[ pw[ r + 0 ] ];
dv[ 1 ] = &mesh->verts[ pw[ r + 1 ] ];
dv[ 2 ] = &mesh->verts[ pw[ r + 2 ] ];
dv[ 3 ] = &mesh->verts[ pw[ r + 3 ] ];
/* planar? */
planar = PlaneFromPoints( plane, dv[ 0 ]->xyz, dv[ 1 ]->xyz, dv[ 2 ]->xyz );
if( planar )
{
dist = DotProduct( dv[ 1 ]->xyz, plane ) - plane[ 3 ];
if( fabs( dist ) > PLANAR_EPSILON )
planar = qfalse;
}
/* generate a quad */
if( planar )
{
rw.numVerts = 4;
for( v = 0; v < 4; v++ )
{
/* get most everything */
memcpy( &rw.verts[ v ], dv[ v ], sizeof( bspDrawVert_t ) );
/* fix colors */
for( i = 0; i < MAX_LIGHTMAPS; i++ )
{
radVertexLuxel = RAD_VERTEX_LUXEL( i, ds->firstVert + dv[ v ]->color[ 0 ][ 0 ] );
VectorCopy( radVertexLuxel, rw.verts[ v ].color[ i ] );
rw.verts[ v ].color[ i ][ 3 ] = dv[ v ]->color[ i ][ 3 ];
}
}
/* subdivide into area lights */
RadSubdivideDiffuseLight( lightmapNum, ds, lm, si, scale, subdivide, qtrue, &rw, cw );
}
/* generate 2 tris */
else
{
rw.numVerts = 3;
for( t = 0; t < 2; t++ )
{
for( v = 0; v < 3 + t; v++ )
{
/* get "other" triangle (stupid hacky logic, but whatevah) */
if( v == 1 && t == 1 )
v++;
/* get most everything */
memcpy( &rw.verts[ v ], dv[ v ], sizeof( bspDrawVert_t ) );
/* fix colors */
for( i = 0; i < MAX_LIGHTMAPS; i++ )
{
radVertexLuxel = RAD_VERTEX_LUXEL( i, ds->firstVert + dv[ v ]->color[ 0 ][ 0 ] );
VectorCopy( radVertexLuxel, rw.verts[ v ].color[ i ] );
rw.verts[ v ].color[ i ][ 3 ] = dv[ v ]->color[ i ][ 3 ];
}
}
/* subdivide into area lights */
RadSubdivideDiffuseLight( lightmapNum, ds, lm, si, scale, subdivide, qtrue, &rw, cw );
}
}
}
}
/* free the mesh */
FreeMesh( mesh );
}
static void ProjectDecalOntoPatch( decalProjector_t *dp, mapDrawSurface_t *ds )
{
int x, y, pw[ 5 ], r, iterations;
vec4_t plane;
float d;
mesh_t src, *mesh, *subdivided;
winding_t *w;
/* backface check */
if( ds->planar )
{
VectorCopy( mapplanes[ ds->planeNum ].normal, plane );
plane[ 3 ] = mapplanes[ ds->planeNum ].dist + DotProduct( plane, entityOrigin );
d = DotProduct( dp->planes[ 0 ], plane );
if( d < -0.0001f )
return;
}
/* tesselate the patch */
src.width = ds->patchWidth;
src.height = ds->patchHeight;
src.verts = ds->verts;
iterations = IterationsForCurve( ds->longestCurve, patch_subdivide->integer );
subdivided = SubdivideMesh2( src, iterations );
/* fit it to the curve and remove colinear verts on rows/columns */
PutMeshOnCurve( *subdivided );
mesh = RemoveLinearMeshColumnsRows( subdivided );
FreeMesh( subdivided );
/* iterate through the mesh quads */
for( y = 0; y < (mesh->height - 1); y++ )
{
for( x = 0; x < (mesh->width - 1); x++ )
{
/* set indexes */
pw[ 0 ] = x + (y * mesh->width);
pw[ 1 ] = x + ((y + 1) * mesh->width);
pw[ 2 ] = x + 1 + ((y + 1) * mesh->width);
pw[ 3 ] = x + 1 + (y * mesh->width);
pw[ 4 ] = x + (y * mesh->width); /* same as pw[ 0 ] */
/* set radix */
r = (x + y) & 1;
/* generate decal for first triangle */
w = AllocWinding( 3 );
w->numpoints = 3;
VectorCopy( mesh->verts[ pw[ r + 0 ] ].xyz, w->p[ 0 ] );
VectorCopy( mesh->verts[ pw[ r + 1 ] ].xyz, w->p[ 1 ] );
VectorCopy( mesh->verts[ pw[ r + 2 ] ].xyz, w->p[ 2 ] );
ProjectDecalOntoWinding( dp, ds, w );
/* generate decal for second triangle */
w = AllocWinding( 3 );
w->numpoints = 3;
VectorCopy( mesh->verts[ pw[ r + 0 ] ].xyz, w->p[ 0 ] );
VectorCopy( mesh->verts[ pw[ r + 2 ] ].xyz, w->p[ 1 ] );
VectorCopy( mesh->verts[ pw[ r + 3 ] ].xyz, w->p[ 2 ] );
ProjectDecalOntoWinding( dp, ds, w );
}
}
/* clean up */
Mem_Free( mesh );
}
void ProcessDecals( void )
{
int i, j, x, y, pw[ 5 ], r, iterations;
float distance;
vec4_t projection, plane;
vec3_t origin, target, delta;
entity_t *e, *e2;
parseMesh_t *p;
mesh_t *mesh, *subdivided;
bspDrawVert_t *dv[4];
const char *value;
/* note it */
MsgDev( D_NOTE, "--- ProcessDecals ---\n" );
/* walk entity list */
for( i = 0; i < numEntities; i++ )
{
/* get entity */
e = &entities[ i ];
value = ValueForKey( e, "classname" );
if( com.stricmp( value, "_decal" ) )
continue;
/* any patches? */
if( e->patches == NULL )
{
MsgDev( D_WARN, "Decal entity without any patch meshes, ignoring.\n" );
e->epairs = NULL; /* fixme: leak! */
continue;
}
/* find target */
value = ValueForKey( e, "target" );
e2 = FindTargetEntity( value );
/* no target? */
if( e2 == NULL )
{
MsgDev( D_WARN, "Decal entity without a valid target, ignoring.\n" );
continue;
}
/* walk entity patches */
for( p = e->patches; p != NULL; p = e->patches )
{
/* setup projector */
if( VectorCompare( e->origin, vec3_origin ) )
{
VectorAdd( p->eMins, p->eMaxs, origin );
VectorScale( origin, 0.5f, origin );
}
else VectorCopy( e->origin, origin );
VectorCopy( e2->origin, target );
VectorSubtract( target, origin, delta );
/* setup projection plane */
distance = VectorNormalizeLength2( delta, projection );
projection[ 3 ] = DotProduct( origin, projection );
/* create projectors */
if( distance > 0.125f )
{
/* tesselate the patch */
iterations = IterationsForCurve( p->longestCurve, patch_subdivide->integer );
subdivided = SubdivideMesh2( p->mesh, iterations );
/* fit it to the curve and remove colinear verts on rows/columns */
PutMeshOnCurve( *subdivided );
mesh = RemoveLinearMeshColumnsRows( subdivided );
FreeMesh( subdivided );
/* offset by projector origin */
for( j = 0; j < (mesh->width * mesh->height); j++ )
VectorAdd( mesh->verts[ j ].xyz, e->origin, mesh->verts[ j ].xyz );
/* iterate through the mesh quads */
for( y = 0; y < (mesh->height - 1); y++ )
{
for( x = 0; x < (mesh->width - 1); x++ )
{
/* set indexes */
pw[ 0 ] = x + (y * mesh->width);
pw[ 1 ] = x + ((y + 1) * mesh->width);
pw[ 2 ] = x + 1 + ((y + 1) * mesh->width);
pw[ 3 ] = x + 1 + (y * mesh->width);
pw[ 4 ] = x + (y * mesh->width); /* same as pw[ 0 ] */
/* set radix */
r = (x + y) & 1;
/* get drawverts */
dv[ 0 ] = &mesh->verts[ pw[ r + 0 ] ];
dv[ 1 ] = &mesh->verts[ pw[ r + 1 ] ];
dv[ 2 ] = &mesh->verts[ pw[ r + 2 ] ];
dv[ 3 ] = &mesh->verts[ pw[ r + 3 ] ];
/* planar? (nuking this optimization as it doesn't work on non-rectangular quads) */
plane[ 0 ] = 0.0f; /* stupid msvc */
if( 0 && PlaneFromPoints( plane, dv[ 0 ]->xyz, dv[ 1 ]->xyz, dv[ 2 ]->xyz ) &&
fabs( DotProduct( dv[ 1 ]->xyz, plane ) - plane[ 3 ] ) <= PLANAR_EPSILON )
{
/* make a quad projector */
MakeDecalProjector( p->shaderInfo, projection, distance, 4, dv );
}
else
{
/* make first triangle */
MakeDecalProjector( p->shaderInfo, projection, distance, 3, dv );
/* make second triangle */
dv[ 1 ] = dv[ 2 ];
dv[ 2 ] = dv[ 3 ];
MakeDecalProjector( p->shaderInfo, projection, distance, 3, dv );
}
}
}
/* clean up */
Mem_Free( mesh );
}
/* remove patch from entity (fixme: leak!) */
e->patches = p->next;
/* push patch to worldspawn (enable this to debug projectors) */
#if 0
p->next = entities[ 0 ].patches;
entities[ 0 ].patches = p;
#endif
}
}
/* emit some stats */
MsgDev( D_NOTE, "%9d decal projectors\n", numProjectors );
}
void TriangulatePatchSurface( mapDrawSurface_t *ds ){
int iterations, x, y, pw[ 5 ], r;
mapDrawSurface_t *dsNew;
mesh_t src, *subdivided, *mesh;
/* try to early out */
if ( ds->numVerts == 0 || ds->type != SURFACE_PATCH || patchMeta == qfalse ) {
return;
}
/* make a mesh from the drawsurf */
src.width = ds->patchWidth;
src.height = ds->patchHeight;
src.verts = ds->verts;
//% subdivided = SubdivideMesh( src, 8, 999 );
iterations = IterationsForCurve( ds->longestCurve, patchSubdivisions );
subdivided = SubdivideMesh2( src, iterations ); //% ds->maxIterations
/* fit it to the curve and remove colinear verts on rows/columns */
PutMeshOnCurve( *subdivided );
mesh = RemoveLinearMeshColumnsRows( subdivided );
FreeMesh( subdivided );
//% MakeMeshNormals( mesh );
/* make a copy of the drawsurface */
dsNew = AllocDrawSurface( SURFACE_META );
memcpy( dsNew, ds, sizeof( *ds ) );
/* if the patch is nonsolid, then discard it */
if ( !( ds->shaderInfo->compileFlags & C_SOLID ) ) {
ClearSurface( ds );
}
/* set new pointer */
ds = dsNew;
/* basic transmogrification */
ds->type = SURFACE_META;
ds->numIndexes = 0;
ds->indexes = safe_malloc( mesh->width * mesh->height * 6 * sizeof( int ) );
/* copy the verts in */
ds->numVerts = ( mesh->width * mesh->height );
ds->verts = mesh->verts;
/* iterate through the mesh quads */
for ( y = 0; y < ( mesh->height - 1 ); y++ )
{
for ( x = 0; x < ( mesh->width - 1 ); x++ )
{
/* set indexes */
pw[ 0 ] = x + ( y * mesh->width );
pw[ 1 ] = x + ( ( y + 1 ) * mesh->width );
pw[ 2 ] = x + 1 + ( ( y + 1 ) * mesh->width );
pw[ 3 ] = x + 1 + ( y * mesh->width );
pw[ 4 ] = x + ( y * mesh->width ); /* same as pw[ 0 ] */
/* set radix */
r = ( x + y ) & 1;
/* make first triangle */
ds->indexes[ ds->numIndexes++ ] = pw[ r + 0 ];
ds->indexes[ ds->numIndexes++ ] = pw[ r + 1 ];
ds->indexes[ ds->numIndexes++ ] = pw[ r + 2 ];
/* make second triangle */
ds->indexes[ ds->numIndexes++ ] = pw[ r + 0 ];
ds->indexes[ ds->numIndexes++ ] = pw[ r + 2 ];
ds->indexes[ ds->numIndexes++ ] = pw[ r + 3 ];
}
}
/* free the mesh, but not the verts */
free( mesh );
/* add to count */
numPatchMetaSurfaces++;
/* classify it */
ClassifySurfaces( 1, ds );
}
void ProcessDecals( void )
{
int i, j, x, y, pw[ 5 ], r, iterations, smoothNormals;
float distance, lightmapScale, backfaceAngle;
vec4_t projection, plane;
vec3_t origin, target, delta, lightmapAxis;
vec3_t minlight, minvertexlight, ambient, colormod;
entity_t *e, *e2;
parseMesh_t *p;
mesh_t *mesh, *subdivided;
bspDrawVert_t *dv[ 4 ];
const char *value;
/* note it */
Sys_FPrintf( SYS_VRB, "--- ProcessDecals ---\n" );
/* no decals */
if (nodecals)
{
for( i = 0; i < numEntities; i++ )
{
/* get entity */
e = &entities[ i ];
value = ValueForKey( e, "classname" );
if( Q_stricmp( value, "_decal" ) && Q_stricmp( value, "misc_decal" ) )
continue;
/* clear entity patches */
e->patches = NULL; // fixme: LEAK!
}
return;
}
/* walk entity list */
for( i = 0; i < numEntities; i++ )
{
/* get entity */
e = &entities[ i ];
value = ValueForKey( e, "classname" );
if( Q_stricmp( value, "_decal" ) && Q_stricmp( value, "misc_decal" ) )
continue;
/* any patches? */
if( e->patches == NULL )
{
Sys_Warning( e->mapEntityNum, "Decal entity without any patch meshes, ignoring." );
e->epairs = NULL; /* fixme: leak! */
continue;
}
/* find target */
value = ValueForKey( e, "target" );
e2 = FindTargetEntity( value );
/* no target? */
if( e2 == NULL )
{
Sys_Warning( e->mapEntityNum, "Decal entity without a valid target, ignoring." );
continue;
}
/* vortex: get lightmap scaling value for this entity */
GetEntityLightmapScale( e, &lightmapScale, 0);
/* vortex: get lightmap axis for this entity */
GetEntityLightmapAxis( e, lightmapAxis, NULL );
/* vortex: per-entity normal smoothing */
GetEntityNormalSmoothing( e, &smoothNormals, 0);
/* vortex: per-entity _minlight, _ambient, _color, _colormod */
GetEntityMinlightAmbientColor( e, NULL, minlight, minvertexlight, ambient, colormod, qtrue );
/* vortex: _backfacecull */
if ( KeyExists(e, "_backfacecull") )
backfaceAngle = FloatForKey(e, "_backfacecull");
else if ( KeyExists(e, "_bfc") )
backfaceAngle = FloatForKey(e, "_bfc");
else
backfaceAngle = 90.0f;
/* walk entity patches */
for( p = e->patches; p != NULL; p = e->patches )
{
/* setup projector */
if( VectorCompare( e->origin, vec3_origin ) )
{
VectorAdd( p->eMins, p->eMaxs, origin );
VectorScale( origin, 0.5f, origin );
}
else
VectorCopy( e->origin, origin );
VectorCopy( e2->origin, target );
VectorSubtract( target, origin, delta );
/* setup projection plane */
distance = VectorNormalize( delta, projection );
projection[ 3 ] = DotProduct( origin, projection );
/* create projectors */
if( distance > 0.125f )
{
/* tesselate the patch */
iterations = IterationsForCurve( p->longestCurve, patchSubdivisions );
subdivided = SubdivideMesh2( p->mesh, iterations );
/* fit it to the curve and remove colinear verts on rows/columns */
PutMeshOnCurve( *subdivided );
mesh = RemoveLinearMeshColumnsRows( subdivided );
FreeMesh( subdivided );
/* offset by projector origin */
for( j = 0; j < (mesh->width * mesh->height); j++ )
VectorAdd( mesh->verts[ j ].xyz, e->origin, mesh->verts[ j ].xyz );
/* iterate through the mesh quads */
for( y = 0; y < (mesh->height - 1); y++ )
{
for( x = 0; x < (mesh->width - 1); x++ )
{
/* set indexes */
pw[ 0 ] = x + (y * mesh->width);
pw[ 1 ] = x + ((y + 1) * mesh->width);
pw[ 2 ] = x + 1 + ((y + 1) * mesh->width);
pw[ 3 ] = x + 1 + (y * mesh->width);
pw[ 4 ] = x + (y * mesh->width); /* same as pw[ 0 ] */
/* set radix */
r = (x + y) & 1;
/* get drawverts */
dv[ 0 ] = &mesh->verts[ pw[ r + 0 ] ];
dv[ 1 ] = &mesh->verts[ pw[ r + 1 ] ];
dv[ 2 ] = &mesh->verts[ pw[ r + 2 ] ];
dv[ 3 ] = &mesh->verts[ pw[ r + 3 ] ];
/* planar? (nuking this optimization as it doesn't work on non-rectangular quads) */
plane[ 0 ] = 0.0f; /* stupid msvc */
if( 0 && PlaneFromPoints( plane, dv[ 0 ]->xyz, dv[ 1 ]->xyz, dv[ 2 ]->xyz ) && fabs( DotProduct( dv[ 1 ]->xyz, plane ) - plane[ 3 ] ) <= PLANAR_EPSILON )
{
/* make a quad projector */
MakeDecalProjector( i, p->shaderInfo, projection, distance, 4, dv, cos(backfaceAngle / 180.0f * Q_PI), lightmapScale, lightmapAxis, minlight, minvertexlight, ambient, colormod, smoothNormals);
}
else
{
/* make first triangle */
MakeDecalProjector( i, p->shaderInfo, projection, distance, 3, dv, cos(backfaceAngle / 180.0f * Q_PI), lightmapScale, lightmapAxis, minlight, minvertexlight, ambient, colormod, smoothNormals);
/* make second triangle */
dv[ 1 ] = dv[ 2 ];
dv[ 2 ] = dv[ 3 ];
MakeDecalProjector( i, p->shaderInfo, projection, distance, 3, dv, cos(backfaceAngle / 180.0f * Q_PI), lightmapScale, lightmapAxis, minlight, minvertexlight, ambient, colormod, smoothNormals);
}
}
}
/* clean up */
free( mesh );
}
/* remove patch from entity (fixme: leak!) */
e->patches = p->next;
/* push patch to worldspawn (enable this to debug projectors) */
#if 0
p->next = entities[ 0 ].patches;
entities[ 0 ].patches = p;
#endif
}
}
/* emit some stats */
Sys_FPrintf( SYS_VRB, "%9d decal projectors\n", numProjectors );
}
