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ref: gl: enable polygon offset for fullbright textures when rendering them in separate from VBO pass

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This commit is contained in:
Alibek Omarov
2025-02-25 11:49:31 +03:00
parent 15a6971aca
commit a3aaa87147
1 changed files with 11 additions and 0 deletions
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11
ref/gl/gl_rsurf.c
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@@ -1093,6 +1093,14 @@ static void R_RenderFullbrights( void )
pglBlendFunc( GL_ONE, GL_ONE );
pglTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
// if fullbright textures are drawn in separate pass from VBO they
// cause z-fighting, this is noticeable on `slide_waifufu.bsp` map
if( R_HasEnabledVBO() && gl_polyoffset.value )
{
pglEnable( GL_POLYGON_OFFSET_FILL );
pglPolygonOffset( -1.0f, -gl_polyoffset.value );
}
for( i = draw_fullbrights.first; i <= draw_fullbrights.last; i++ )
{
es = fullbright_surfaces[i];
@@ -1108,6 +1116,9 @@ static void R_RenderFullbrights( void )
es->lumachain = NULL;
}
if( R_HasEnabledVBO() && gl_polyoffset.value )
pglDisable( GL_POLYGON_OFFSET_FILL );
pglDisable( GL_BLEND );
pglDepthMask( GL_TRUE );
pglDisable( GL_ALPHA_TEST );