diff options
Diffstat (limited to 'src/gallium/auxiliary/gallivm/lp_bld_sample.c')
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_sample.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_sample.c b/src/gallium/auxiliary/gallivm/lp_bld_sample.c index d339abaea04..696855b1335 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_sample.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_sample.c @@ -700,6 +700,14 @@ lp_build_lod_selector(struct lp_build_sample_context *bld, if (mip_filter == PIPE_TEX_MIPFILTER_NONE || mip_filter == PIPE_TEX_MIPFILTER_NEAREST) { + /* + * XXX: this is not entirely correct, as out_lod_ipart is used + * both for mip level determination as well as mag/min switchover + * point (if different min/mag filters are used). In particular, + * lod values between [-0.5,0] (rho between [sqrt(2), 1.0]) will + * incorrectly use min filter instead of mag (the non-optimized + * calculation further down has exactly the same problem). + */ *out_lod_ipart = lp_build_ilog2(levelf_bld, rho); *out_lod_fpart = levelf_bld->zero; return; |