Module: Mesa
Branch: master
Commit: 9977297ad9bc0e816810bd3a39d89e5c1cffff72
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=9977297ad9bc0e816810bd3a39d89e5c1cffff72
Author: Zhenyu Wang <zhen...@linux.intel.com>
Date: Tue Jan 4 13:46:13 2011 +0800
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
---
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 c7c4eb1..e25d1bf 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) |
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