diff options
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_cliptest_tmp.h | 28 | ||||
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_llvm.c | 4 |
2 files changed, 18 insertions, 14 deletions
diff --git a/src/gallium/auxiliary/draw/draw_cliptest_tmp.h b/src/gallium/auxiliary/draw/draw_cliptest_tmp.h index c57e5f43f19..34add829353 100644 --- a/src/gallium/auxiliary/draw/draw_cliptest_tmp.h +++ b/src/gallium/auxiliary/draw/draw_cliptest_tmp.h @@ -94,30 +94,31 @@ static boolean TAG(do_cliptest)( struct pt_post_vs *pvs, out->clip_pos[i] = position[i]; } + /* Be careful with NaNs. Comparisons must be true for them. */ /* Do the hardwired planes first: */ if (flags & DO_CLIP_XY_GUARD_BAND) { - if (-0.50 * position[0] + position[3] < 0) mask |= (1<<0); - if ( 0.50 * position[0] + position[3] < 0) mask |= (1<<1); - if (-0.50 * position[1] + position[3] < 0) mask |= (1<<2); - if ( 0.50 * position[1] + position[3] < 0) mask |= (1<<3); + if (!(-0.50 * position[0] + position[3] >= 0)) mask |= (1<<0); + if (!( 0.50 * position[0] + position[3] >= 0)) mask |= (1<<1); + if (!(-0.50 * position[1] + position[3] >= 0)) mask |= (1<<2); + if (!( 0.50 * position[1] + position[3] >= 0)) mask |= (1<<3); } else if (flags & DO_CLIP_XY) { - if (-position[0] + position[3] < 0) mask |= (1<<0); - if ( position[0] + position[3] < 0) mask |= (1<<1); - if (-position[1] + position[3] < 0) mask |= (1<<2); - if ( position[1] + position[3] < 0) mask |= (1<<3); + if (!(-position[0] + position[3] >= 0)) mask |= (1<<0); + if (!( position[0] + position[3] >= 0)) mask |= (1<<1); + if (!(-position[1] + position[3] >= 0)) mask |= (1<<2); + if (!( position[1] + position[3] >= 0)) mask |= (1<<3); } /* Clip Z planes according to full cube, half cube or none. */ if (flags & DO_CLIP_FULL_Z) { - if ( position[2] + position[3] < 0) mask |= (1<<4); - if (-position[2] + position[3] < 0) mask |= (1<<5); + if (!( position[2] + position[3] >= 0)) mask |= (1<<4); + if (!(-position[2] + position[3] >= 0)) mask |= (1<<5); } else if (flags & DO_CLIP_HALF_Z) { - if ( position[2] < 0) mask |= (1<<4); - if (-position[2] + position[3] < 0) mask |= (1<<5); + if (!( position[2] >= 0)) mask |= (1<<4); + if (!(-position[2] + position[3] >= 0)) mask |= (1<<5); } if (flags & DO_CLIP_USER) { @@ -144,7 +145,7 @@ static boolean TAG(do_cliptest)( struct pt_post_vs *pvs, if (clipdist < 0 || util_is_inf_or_nan(clipdist)) mask |= 1 << plane_idx; } else { - if (dot4(clipvertex, plane[plane_idx]) < 0) + if (!(dot4(clipvertex, plane[plane_idx]) >= 0)) mask |= 1 << plane_idx; } } @@ -190,7 +191,6 @@ static boolean TAG(do_cliptest)( struct pt_post_vs *pvs, out = (struct vertex_header *)( (char *)out + info->stride ); } - return need_pipeline != 0; } diff --git a/src/gallium/auxiliary/draw/draw_llvm.c b/src/gallium/auxiliary/draw/draw_llvm.c index 89ed045ca34..f25dafef954 100644 --- a/src/gallium/auxiliary/draw/draw_llvm.c +++ b/src/gallium/auxiliary/draw/draw_llvm.c @@ -1201,6 +1201,10 @@ generate_clipmask(struct draw_llvm *llvm, cv_w = pos_w; } + /* + * Be careful with the comparisons and NaNs (using llvm's unordered + * comparisons here). + */ /* Cliptest, for hardwired planes */ /* * XXX should take guardband into account (currently not in key). |