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utils: pxrad: push overlapping vertices outside the model to prevent overdarkening, add zhlt_vertexblur #259

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Merged
SNMetamorph merged 2 commits into from
Nov 19, 2025
Merged

utils: pxrad: push overlapping vertices outside the model to prevent overdarkening, add zhlt_vertexblur #259

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1f53d6f
zhlt_vertexblur
ncuxonaT Nov 18, 2025
8439963
push vertices
ncuxonaT Nov 18, 2025
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40 changes: 37 additions & 3 deletions utils/pxrad/vertexlight.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -213,8 +213,7 @@ void BuildVertexLights( int indexnum, int thread = -1 )
NudgeVertexPosition( tv->light->pos ); // nudged vertexes will be used on indirect lighting too
VectorCopy( tv->normal, normal );

// calculate visibility for the sample
int leaf = PointInLeaf( tv->light->pos ) - g_dleafs;


// two-sided verts pos will be adjusted later
if( tv->twosided )
Expand All @@ -223,7 +222,39 @@ void BuildVertexLights( int indexnum, int thread = -1 )
{
VectorMA( tv->light->pos, DEFAULT_HUNT_OFFSET, tv->normal, point );
VectorCopy( point, tv->light->pos );

//check overlapping by back faces
if( FBitSet( mesh->flags, FMESH_SELF_SHADOW )&&( !g_studiolegacy ) )
{
vec3_t trace_end;
vec3_t trace_dir;
trace_t trace;

VectorSubtract( point, tv->point, trace_dir );
VectorAdd( trace_dir, tv->normal, trace_dir );
VectorNormalize2( trace_dir );

VectorMA( point, 8.0f, trace_dir, trace_end );

for( int i = 0; i < 8; i++ )
{
trace.contents = CONTENTS_EMPTY;
mesh->rayBVH.TraceRay( point, trace_end, &trace, false );
if( (trace.contents == CONTENTS_SOLID)&&(trace.surface == -1) )
{
VectorLerp( point, trace.fraction, trace_end, point );
VectorMA( point, DEFAULT_HUNT_OFFSET, trace_dir, point );
}
else
break;
}

VectorCopy( point, tv->light->pos );
}
}

// calculate visibility for the sample
int leaf = PointInLeaf( tv->light->pos ) - g_dleafs;

memset( light, 0, sizeof( light ));
memset( delux, 0, sizeof( delux ));
Expand Down Expand Up @@ -521,6 +552,7 @@ void FinalLightVertex( int modelnum, int threadnum = -1 )
vec3_t lb, v, direction;
int lightstyles;
vec_t minlight;
bool vertexblur;
tmesh_t *mesh;
dmodelvertlight_t *dml;
dvlightlump_t *l;
Expand Down Expand Up @@ -558,8 +590,10 @@ void FinalLightVertex( int modelnum, int threadnum = -1 )
minlight *= g_direct_scale;
if( g_numbounce > 0 ) minlight = 0.0f; // ignore for radiosity

vertexblur = BoolForKey( mapent, "zhlt_vertexblur" );
vertexblur = vertexblur || g_vertexblur;

if( g_vertexblur )
if( vertexblur )
{
for( int i = 0; i < mesh->numverts; i++ )
mesh->verts[i].light->face_counter = 0;
Expand Down
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