diff options
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_arit.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_arit.c b/src/gallium/auxiliary/gallivm/lp_bld_arit.c index 4c6fd9ef7ca..8b19ebd6787 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_arit.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_arit.c @@ -1000,8 +1000,12 @@ lp_build_lerp_simple(struct lp_build_context *bld, res = lp_build_add(bld, v0, res); - if (normalized && !bld->type.sign) { + if ((normalized && !bld->type.sign) || bld->type.fixed) { /* We need to mask out the high order bits when lerping 8bit normalized colors stored on 16bits */ + /* XXX: This step is necessary for lerping 8bit colors stored on 16bits, + * but it will be wrong for true fixed point use cases. Basically we need + * a more powerful lp_type, capable of further distinguishing the values + * interpretation from the value storage. */ res = LLVMBuildAnd(builder, res, lp_build_const_int_vec(bld->gallivm, bld->type, (1 << half_width) - 1), ""); } |