summaryrefslogtreecommitdiff
path: root/src/gallium/auxiliary
diff options
context:
space:
mode:
authorJosé Fonseca <jfonseca@vmware.com>2010-05-08 23:16:38 +0100
committerJosé Fonseca <jfonseca@vmware.com>2010-05-08 23:29:05 +0100
commit08b3179f483c9dacc9a0a46118afff6077eb0e8b (patch)
treeaef58caf21851959537ce8559e5dc99d88ce24a4 /src/gallium/auxiliary
parentff7542ab90154769930c80d58597cfec40844bd9 (diff)
gallivm: Fix mipfiltering with negative lod bias.
In particular, don't use the clamped lod to compute level + 1, or lod in [-1, 0] range will actually interpolate with level 1. This makes Mipfilter DCT pass 100%.
Diffstat (limited to 'src/gallium/auxiliary')
-rw-r--r--src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c
index dd0053f212..3b1e6df4ec 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c
@@ -1046,8 +1046,10 @@ lp_build_linear_mip_levels(struct lp_build_sample_context *bld,
int_bld->zero,
last_level);
/* compute level 1 and clamp to legal range of levels */
- *level1_out = lp_build_add(int_bld, *level0_out, int_bld->one);
- *level1_out = lp_build_min(int_bld, *level1_out, last_level);
+ level = lp_build_add(int_bld, level, int_bld->one);
+ *level1_out = lp_build_clamp(int_bld, level,
+ int_bld->zero,
+ last_level);
*weight_out = lp_build_fract(float_bld, lod);
}