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i965: Make rasterization of single and multiple quad prims match.

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This is trying to follow the spirit of the invariance rules, though
they're not specific on this point.  Fixes quad-invariance piglit test
while retaining the 22s -> 18s win on glean blendFunc.

This was a regression in c67d9d84f5.
This commit is contained in:
Eric Anholt 2010-05-17 10:42:25 -07:00
parent 32a7209c0a
commit f0fb3aa5d4
1 changed files with 6 additions and 0 deletions
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6
src/mesa/drivers/dri/i965/brw_gs.c
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@ -173,6 +173,12 @@ static void populate_key( struct brw_context *brw,
/* _NEW_LIGHT */
key->pv_first = (ctx->Light.ProvokingVertex == GL_FIRST_VERTEX_CONVENTION);
if (key->primitive == GL_QUADS && ctx->Light.ShadeModel != GL_FLAT) {
/* Provide consistent primitive order with brw_set_prim's
* optimization of single quads to trifans.
*/
key->pv_first = GL_TRUE;
}
key->need_gs_prog = (key->hint_gs_always ||
brw->primitive == GL_QUADS ||