From c95cea50a9e14255a60c37b156271b7ab50515e9 Mon Sep 17 00:00:00 2001 From: José Fonseca Date: Tue, 15 May 2012 22:34:36 +0100 Subject: gallivm: Fix lp_build_const_xxx for negative integers. Do proper rounding. Thanks to Olivier Galibert for investigating this. --- src/gallium/auxiliary/gallivm/lp_bld_const.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/src/gallium/auxiliary/gallivm/lp_bld_const.c b/src/gallium/auxiliary/gallivm/lp_bld_const.c index f0611b158d9..59e8fb2ed6e 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_const.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_const.c @@ -36,6 +36,7 @@ #include #include "util/u_debug.h" +#include "util/u_math.h" #include "lp_bld_type.h" #include "lp_bld_const.h" @@ -297,7 +298,7 @@ lp_build_const_elem(struct gallivm_state *gallivm, else { double dscale = lp_const_scale(type); - elem = LLVMConstInt(elem_type, val*dscale + 0.5, 0); + elem = LLVMConstInt(elem_type, round(val*dscale), 0); } return elem; @@ -372,10 +373,10 @@ lp_build_const_aos(struct gallivm_state *gallivm, else { double dscale = lp_const_scale(type); - elems[swizzle[0]] = LLVMConstInt(elem_type, r*dscale + 0.5, 0); - elems[swizzle[1]] = LLVMConstInt(elem_type, g*dscale + 0.5, 0); - elems[swizzle[2]] = LLVMConstInt(elem_type, b*dscale + 0.5, 0); - elems[swizzle[3]] = LLVMConstInt(elem_type, a*dscale + 0.5, 0); + elems[swizzle[0]] = LLVMConstInt(elem_type, round(r*dscale), 0); + elems[swizzle[1]] = LLVMConstInt(elem_type, round(g*dscale), 0); + elems[swizzle[2]] = LLVMConstInt(elem_type, round(b*dscale), 0); + elems[swizzle[3]] = LLVMConstInt(elem_type, round(a*dscale), 0); } for(i = 4; i < type.length; ++i) -- cgit v1.2.3