diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c | 49 |
1 files changed, 16 insertions, 33 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c index 659de9b5626..ba265b237df 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c @@ -351,20 +351,16 @@ lp_build_sample_wrap_linear(struct lp_build_sample_context *bld, } case PIPE_TEX_WRAP_CLAMP_TO_BORDER: - { - LLVMValueRef min; - if (bld->static_state->normalized_coords) { - /* scale coord to length */ - coord = lp_build_mul(coord_bld, coord, length_f); - } - /* was: clamp to [-0.5, length + 0.5], then sub 0.5 */ - coord = lp_build_sub(coord_bld, coord, half); - min = lp_build_const_vec(bld->gallivm, coord_bld->type, -1.0F); - coord = lp_build_clamp(coord_bld, coord, min, length_f); - /* convert to int, compute lerp weight */ - lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight); - coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); + if (bld->static_state->normalized_coords) { + /* scale coord to length */ + coord = lp_build_mul(coord_bld, coord, length_f); } + /* was: clamp to [-0.5, length + 0.5], then sub 0.5 */ + /* can skip clamp (though might not work for very large coord values */ + coord = lp_build_sub(coord_bld, coord, half); + /* convert to int, compute lerp weight */ + lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight); + coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); break; case PIPE_TEX_WRAP_MIRROR_REPEAT: @@ -438,9 +434,9 @@ lp_build_sample_wrap_linear(struct lp_build_sample_context *bld, } /* was: clamp to [-0.5, length + 0.5] then sub 0.5 */ - /* skip -0.5 clamp (always positive), do sub first */ + /* skip clamp - always positive, and other side + only potentially matters for very large coords */ coord = lp_build_sub(coord_bld, coord, half); - coord = lp_build_min(coord_bld, coord, length_f); /* convert to int, compute lerp weight */ lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight); @@ -514,22 +510,12 @@ lp_build_sample_wrap_nearest(struct lp_build_sample_context *bld, break; case PIPE_TEX_WRAP_CLAMP_TO_BORDER: - /* Note: this is the same as CLAMP_TO_EDGE, except min = -1 */ - { - LLVMValueRef min, max; - - if (bld->static_state->normalized_coords) { - /* scale coord to length */ - coord = lp_build_mul(coord_bld, coord, length_f); - } - - icoord = lp_build_ifloor(coord_bld, coord); - - /* clamp to [-1, length] */ - min = lp_build_negate(int_coord_bld, int_coord_bld->one); - max = length; - icoord = lp_build_clamp(int_coord_bld, icoord, min, max); + if (bld->static_state->normalized_coords) { + /* scale coord to length */ + coord = lp_build_mul(coord_bld, coord, length_f); } + /* no clamp necessary, border masking will handle this */ + icoord = lp_build_ifloor(coord_bld, coord); break; case PIPE_TEX_WRAP_MIRROR_REPEAT: @@ -573,9 +559,6 @@ lp_build_sample_wrap_nearest(struct lp_build_sample_context *bld, /* itrunc == ifloor here */ icoord = lp_build_itrunc(coord_bld, coord); - - /* clamp to [0, length] */ - icoord = lp_build_min(int_coord_bld, icoord, length); break; default: |