diff options
| author | Zhenyu Wang <[email protected]> | 2011-01-04 13:46:13 +0800 |
|---|---|---|
| committer | Zhenyu Wang <[email protected]> | 2011-01-04 13:51:39 +0800 |
| commit | 9977297ad9bc0e816810bd3a39d89e5c1cffff72 (patch) | |
| tree | d089ae7c199f8ae106bf7af22615f0fe089d8487 | |
| parent | 7bd2c5d1f98d0cfcf896a58c3d66713165f6bedd (diff) | |
i965: Fix provoking vertex select in clip state for sandybridge
Triangle fan provoking vertex for first convention should be
'vertex 1' in sandybridge clip state.
Partly fix glean/clipFlat case
| -rw-r--r-- | src/mesa/drivers/dri/i965/gen6_clip_state.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/gen6_clip_state.c b/src/mesa/drivers/dri/i965/gen6_clip_state.c index c7c4eb1f27d..e25d1bf7879 100644 --- a/src/mesa/drivers/dri/i965/gen6_clip_state.c +++ b/src/mesa/drivers/dri/i965/gen6_clip_state.c @@ -43,7 +43,10 @@ upload_clip_state(struct brw_context *brw) depth_clamp = GEN6_CLIP_Z_TEST; if (ctx->Light.ProvokingVertex == GL_FIRST_VERTEX_CONVENTION) { - provoking = 0; + provoking = + (0 << GEN6_CLIP_TRI_PROVOKE_SHIFT) | + (1 << GEN6_CLIP_TRIFAN_PROVOKE_SHIFT) | + (0 << GEN6_CLIP_LINE_PROVOKE_SHIFT); } else { provoking = (2 << GEN6_CLIP_TRI_PROVOKE_SHIFT) | |