diff options
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c index def731e9d95..6b1509c7cfa 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c @@ -1130,6 +1130,17 @@ lp_build_sample_image_linear(struct lp_build_sample_context *bld, */ /* should always have normalized coords, and offsets are undefined */ assert(bld->static_sampler_state->normalized_coords); + /* + * The coords should all be between [0,1] however we can have NaNs, + * which will wreak havoc. In particular the y1_clamped value below + * can be -INT_MAX (on x86) and be propagated right through (probably + * other values might be bogus in the end too). + * So kill off the NaNs here. + */ + coords[0] = lp_build_max_ext(coord_bld, coords[0], coord_bld->zero, + GALLIVM_NAN_RETURN_OTHER_SECOND_NONNAN); + coords[1] = lp_build_max_ext(coord_bld, coords[1], coord_bld->zero, + GALLIVM_NAN_RETURN_OTHER_SECOND_NONNAN); coord = lp_build_mul(coord_bld, coords[0], flt_width_vec); /* instead of clamp, build mask if overflowed */ coord = lp_build_sub(coord_bld, coord, half); |