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sort vbo contents by texture

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This commit is contained in:
Eric Wasylishen 2014-10-27 00:09:42 -06:00
parent 6763f8138c
commit a8103911f7
1 changed files with 22 additions and 6 deletions
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18
quakespasm/Quake/r_brush.c
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@ -1008,14 +1008,30 @@ void GL_BuildVBOs (void)
if (!m || m->name[0] == '*' || m->type != mod_brush)
continue;
// sort by texture (don't clear chain_world because that needs to persist between pvs updates
// and we could be doing a video mode switch)
R_ClearTextureChains(m, chain_model);
for (i=0 ; i<m->numsurfaces ; i++)
{
msurface_t *s = &m->surfaces[i];
R_ChainSurface(&m->surfaces[i], chain_model);
}
// add the sorted surfaces
for (i=0 ; i<m->numtextures ; i++)
{
texture_t *t;
msurface_t *s;
t = m->textures[i];
if (!t) continue;
for (s = t->texturechains[chain_model]; 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;
}
}
}
// upload to GPU
GL_BindBufferFunc (GL_ARRAY_BUFFER, gl_bmodel_vbo);