/**
* @brief Projects a decal onto a world surface
* @param[in] dp
* @param[in] surf
* @param[in] bmodel
*/
void R_ProjectDecalOntoSurface(decalProjector_t *dp, msurface_t *surf, bmodel_t *bmodel)
{
srfGeneric_t *gen;
int i;
// early outs
if (dp->shader == NULL)
{
return;
}
//if( surf->viewCount == tr.viewCount )
// return;
if ((surf->shader->surfaceFlags & (SURF_NOIMPACT | SURF_NOMARKS)) || (surf->shader->contentFlags & CONTENTS_FOG))
{
return;
}
// get generic surface
gen = (srfGeneric_t *) surf->data;
// ignore certain surfacetypes
if (gen->surfaceType != SF_FACE && gen->surfaceType != SF_TRIANGLES && gen->surfaceType != SF_GRID)
{
return;
}
// test bounding sphere
if (!R_TestDecalBoundingSphere(dp, gen->origin, (gen->radius * gen->radius)))
{
return;
}
// planar surface
if (gen->plane.normal[0] != 0.f || gen->plane.normal[1] != 0.f || gen->plane.normal[2] != 0.f)
{
float d;
// backface check
d = DotProduct(dp->planes[0], gen->plane.normal);
if (d < -0.0001f)
{
return;
}
// plane-sphere check
d = DotProduct(dp->center, gen->plane.normal) - gen->plane.dist;
if (Q_fabs(d) >= dp->radius)
{
return;
}
}
// add to counts
tr.pc.c_decalClipSurfaces++;
// check if this projector already has a decal on this surface
{
int count = (bmodel == tr.world->bmodels ? MAX_WORLD_DECALS : MAX_ENTITY_DECALS);
decal_t *decal = bmodel->decals;
for (i = 0; i < count; i++, decal++)
{
if (decal->parent == surf && decal->projectorNum == dp->projectorNum)
{
return;
}
}
// add to counts
tr.pc.c_decalTestSurfaces++;
}
// switch on type
switch (gen->surfaceType)
{
case SF_FACE:
case SF_TRIANGLES:
ProjectDecalOntoTriangles(dp, surf, bmodel);
break;
case SF_GRID:
ProjectDecalOntoGrid(dp, surf, bmodel);
break;
default:
break;
}
}
void R_ProjectDecalOntoSurface( decalProjector_t *dp, bspSurface_t *surf, bspModel_t *bmodel )
{
float d;
srfGeneric_t *gen;
/* early outs */
if ( dp->shader == NULL )
{
return;
}
//% if( surf->viewCount == tr.viewCount )
//% return;
if ( ( surf->shader->surfaceFlags & ( SURF_NOIMPACT | SURF_NOMARKS ) ) || ( surf->shader->contentFlags & CONTENTS_FOG ) )
{
return;
}
/* add to counts */
tr.pc.c_decalTestSurfaces++;
/* get generic surface */
gen = ( srfGeneric_t * ) surf->data;
/* ignore certain surfacetypes */
if ( gen->surfaceType != SF_FACE && gen->surfaceType != SF_TRIANGLES && gen->surfaceType != SF_GRID )
{
return;
}
/* test bounding sphere */
if ( !R_TestDecalBoundingSphere( dp, gen->origin, ( gen->radius * gen->radius ) ) )
// if(!R_TestDecalBoundingBox(dp, gen->bounds[0], gen->bounds[1]))
{
return;
}
/* planar surface */
if ( gen->surfaceType == SF_FACE )
{
srfSurfaceFace_t *srf = ( srfSurfaceFace_t * )surf->data;
if ( srf->plane.normal[ 0 ] || srf->plane.normal[ 1 ] || srf->plane.normal[ 2 ] )
{
/* backface check */
d = DotProduct( dp->planes[ 0 ], srf->plane.normal );
if ( d < -0.0001 )
{
return;
}
/* plane-sphere check */
d = DotProduct( dp->center, srf->plane.normal ) - srf->plane.dist;
if ( fabs( d ) >= dp->radius )
{
return;
}
}
}
/* add to counts */
tr.pc.c_decalClipSurfaces++;
/* switch on type */
switch ( gen->surfaceType )
{
case SF_FACE:
case SF_TRIANGLES:
ProjectDecalOntoTriangles( dp, surf, bmodel );
break;
case SF_GRID:
ProjectDecalOntoGrid( dp, surf, bmodel );
break;
default:
break;
}
}
void MakeEntityDecals( entity_t *e )
{
int i, j, k, f, fOld;
double start;
decalProjector_t dp;
mapDrawSurface_t *ds;
vec3_t identityAxis[ 3 ] = { { 1, 0, 0 }, { 0, 1, 0 }, { 0, 0, 1 } };
/* note it */
MsgDev( D_NOTE, "--- MakeEntityDecals ---\n" );
/* set entity origin */
VectorCopy( e->origin, entityOrigin );
/* transform projector instead of geometry */
VectorClear( entityOrigin );
/* init pacifier */
fOld = -1;
start = Sys_DoubleTime();
/* walk the list of decal projectors */
for( i = 0; i < numProjectors; i++ )
{
/* print pacifier */
f = 10 * i / numProjectors;
if( f != fOld )
{
fOld = f;
MsgDev( D_NOTE, "%d...", f );
}
/* get projector */
TransformDecalProjector( &projectors[ i ], identityAxis, e->origin, &dp );
/* walk the list of surfaces in the entity */
for( j = e->firstDrawSurf; j < numMapDrawSurfs; j++ )
{
/* get surface */
ds = &mapDrawSurfs[ j ];
if( ds->numVerts <= 0 )
continue;
/* ignore autosprite or nomarks */
if( ds->shaderInfo->autosprite || (ds->shaderInfo->compileFlags & C_NOMARKS) )
continue;
/* bounds check */
for( k = 0; k < 3; k++ )
if( ds->mins[ k ] >= (dp.center[ k ] + dp.radius) ||
ds->maxs[ k ] <= (dp.center[ k ] - dp.radius) )
break;
if( k < 3 )
continue;
/* switch on type */
switch( ds->type )
{
case SURFACE_FACE:
ProjectDecalOntoFace( &dp, ds );
break;
case SURFACE_PATCH:
ProjectDecalOntoPatch( &dp, ds );
break;
case SURFACE_TRIANGLES:
case SURFACE_FORCED_META:
case SURFACE_META:
ProjectDecalOntoTriangles( &dp, ds );
break;
default:
break;
}
}
}
MsgDev( D_NOTE, " (%g) second elapsed\n", (Sys_DoubleTime() - start ));
MsgDev( D_NOTE, "%9d decal surfaces\n", numDecalSurfaces );
}
