diff options
Diffstat (limited to 'src/gallium/drivers/llvmpipe/lp_setup_tri.c')
| -rw-r--r-- | src/gallium/drivers/llvmpipe/lp_setup_tri.c | 17 |
1 files changed, 3 insertions, 14 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_setup_tri.c b/src/gallium/drivers/llvmpipe/lp_setup_tri.c index cf3d536eb1d..b2c8cb52500 100644 --- a/src/gallium/drivers/llvmpipe/lp_setup_tri.c +++ b/src/gallium/drivers/llvmpipe/lp_setup_tri.c @@ -365,7 +365,7 @@ do_triangle_ccw(struct lp_setup_context *setup, dcdx_zero_mask = _mm_cmpeq_epi32(dcdx, zero); dcdy_neg_mask = _mm_srai_epi32(dcdy, 31); - top_left_flag = _mm_set1_epi32((setup->pixel_offset == 0) ? ~0 : 0); + top_left_flag = _mm_set1_epi32((setup->bottom_edge_rule == 0) ? ~0 : 0); c_inc_mask = _mm_or_si128(dcdx_neg_mask, _mm_and_si128(dcdx_zero_mask, @@ -417,25 +417,14 @@ do_triangle_ccw(struct lp_setup_context *setup, */ plane[i].c = plane[i].dcdx * position->x[i] - plane[i].dcdy * position->y[i]; - /* correct for top-left vs. bottom-left fill convention. - * - * note that we're overloading gl_rasterization_rules to mean - * both (0.5,0.5) pixel centers *and* bottom-left filling - * convention. - * - * GL actually has a top-left filling convention, but GL's - * notion of "top" differs from gallium's... - * - * Also, sometimes (in FBO cases) GL will render upside down - * to its usual method, in which case it will probably want - * to use the opposite, top-left convention. + /* correct for top-left vs. bottom-left fill convention. */ if (plane[i].dcdx < 0) { /* both fill conventions want this - adjust for left edges */ plane[i].c++; } else if (plane[i].dcdx == 0) { - if (setup->pixel_offset == 0) { + if (setup->bottom_edge_rule == 0){ /* correct for top-left fill convention: */ if (plane[i].dcdy > 0) plane[i].c++; |