Module: Mesa Branch: master Commit: 4e84dc8729cac4c78e521436ae091638a490da76 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=4e84dc8729cac4c78e521436ae091638a490da76
Author: Eric Anholt <[email protected]> Date: Fri May 14 15:34:35 2010 -0700 i965: Set the correct provoking vertex for clipped first-mode trifans. Bug #24470: glean clipFlat test. --- 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 b27fe65..916a99e 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); _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
