From fb6d901ad2589b393b3ed2f53e735c281af0cf50 Mon Sep 17 00:00:00 2001 From: José Fonseca Date: Tue, 4 Dec 2012 21:16:13 +0000 Subject: gallivm: Re-add the kludge for lp_build_lerp of fixed point types. I removed it in commit 7d44d354bdba853e453ce3991396e2b0933468f4 but texture sample code still relies on it. Not sure how to this cleanly, so put it pack for now. --- src/gallium/auxiliary/gallivm/lp_bld_arit.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) 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), ""); } -- cgit v1.2.3