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Sort VBO contents by texture, lightmap

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This commit is contained in:
Eric Wasylishen 2014-10-18 12:13:26 -06:00
parent 94dbbc87be
commit 62a21c6b20
1 changed files with 35 additions and 4 deletions
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39
quakespasm/Quake/r_brush.c
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@ -1004,16 +1004,47 @@ void GL_BuildVBOs (void)
for (j=1 ; j<MAX_MODELS ; j++)
{
msurface_t *lightmap_chains[MAX_LIGHTMAPS];
texture_t *t;
msurface_t *s;
m = cl.model_precache[j];
if (!m || m->name[0] == '*' || m->type != mod_brush)
continue;
// sort by lightmap
memset(lightmap_chains, 0, sizeof(lightmap_chains));
for (i=0 ; i<m->numsurfaces ; i++)
{
msurface_t *s = &m->surfaces[i];
s->vbo_firstvert = varray_index;
memcpy (&varray[VERTEXSIZE * varray_index], s->polys->verts, VERTEXSIZE * sizeof(float) * s->numedges);
varray_index += s->numedges;
s->lightmapchain = lightmap_chains[s->lightmaptexturenum];
lightmap_chains[s->lightmaptexturenum] = s;
}
// sort by texture
R_ClearTextureChains(m, chain_world);
for (i = 0; i < MAX_LIGHTMAPS; i++)
{
if (!lightmap_chains[i])
continue;
for (s = lightmap_chains[i]; s; s = s->lightmapchain)
{
R_ChainSurface(s, chain_world);
}
}
// spit out the surface
for (i=0 ; i<m->numtextures ; i++)
{
t = m->textures[i];
if (!t) continue;
for (s = t->texturechains[chain_world]; s; s = s->texturechain)
{
s->vbo_firstvert = varray_index;
memcpy (&varray[VERTEXSIZE * varray_index], s->polys->verts, VERTEXSIZE * sizeof(float) * s->numedges);
varray_index += s->numedges;
}
}
}