diff options
| author | Eric Anholt <eric@anholt.net> | 2010-05-14 15:34:35 -0700 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2010-05-14 15:37:24 -0700 |
| commit | 4e84dc8729cac4c78e521436ae091638a490da76 (patch) | |
| tree | 3aaca10da4f8a7613d940042326e15e0c0dc90ce | |
| parent | 18ed479119321cafae527511f1bccea90b0dff03 (diff) | |
i965: Set the correct provoking vertex for clipped first-mode trifans.
Bug #24470: glean clipFlat test.
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_clip_tri.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_clip_tri.c b/src/mesa/drivers/dri/i965/brw_clip_tri.c index b27fe654ca..916a99ea00 100644 --- a/src/mesa/drivers/dri/i965/brw_clip_tri.c +++ b/src/mesa/drivers/dri/i965/brw_clip_tri.c @@ -177,7 +177,7 @@ void brw_clip_tri_init_vertices( struct brw_clip_compile *c ) void brw_clip_tri_flat_shade( struct brw_clip_compile *c ) { struct brw_compile *p = &c->func; - struct brw_instruction *is_poly; + struct brw_instruction *is_poly, *is_trifan; struct brw_reg tmp0 = c->reg.loopcount; /* handy temporary */ brw_AND(p, tmp0, get_element_ud(c->reg.R0, 2), brw_imm_ud(PRIM_MASK)); @@ -195,8 +195,22 @@ void brw_clip_tri_flat_shade( struct brw_clip_compile *c ) is_poly = brw_ELSE(p, is_poly); { if (c->key.pv_first) { - brw_clip_copy_colors(c, 1, 0); - brw_clip_copy_colors(c, 2, 0); + brw_CMP(p, + vec1(brw_null_reg()), + BRW_CONDITIONAL_EQ, + tmp0, + brw_imm_ud(_3DPRIM_TRIFAN)); + is_trifan = brw_IF(p, BRW_EXECUTE_1); + { + brw_clip_copy_colors(c, 0, 1); + brw_clip_copy_colors(c, 2, 1); + } + is_trifan = brw_ELSE(p, is_trifan); + { + brw_clip_copy_colors(c, 1, 0); + brw_clip_copy_colors(c, 2, 0); + } + brw_ENDIF(p, is_trifan); } else { brw_clip_copy_colors(c, 0, 2); |