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
2011-01-04 13:46:13 +08:00
parent 7bd2c5d1f9
commit 9977297ad9
1 changed files with 4 additions and 1 deletions
@@ -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) |