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llvmpipe: Handle floating point selection.

This commit is contained in:
José Fonseca 2009-08-17 07:50:45 +01:00
parent 4d7a8194c5
commit 81e7ec485d
1 changed files with 17 additions and 1 deletions
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18
src/gallium/drivers/llvmpipe/lp_bld_swizzle.c
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@ -137,9 +137,18 @@ lp_build_select(struct lp_build_context *bld,
LLVMValueRef a,
LLVMValueRef b)
{
union lp_type type = bld->type;
LLVMValueRef res;
if(a == b)
return a;
if(type.floating) {
LLVMTypeRef int_vec_type = lp_build_int_vec_type(type);
a = LLVMBuildBitCast(bld->builder, a, int_vec_type, "");
b = LLVMBuildBitCast(bld->builder, b, int_vec_type, "");
}
/* TODO: On SSE4 we could do this with a single instruction -- PBLENDVB */
a = LLVMBuildAnd(bld->builder, a, mask, "");
@ -151,7 +160,14 @@ lp_build_select(struct lp_build_context *bld,
*/
b = LLVMBuildAnd(bld->builder, b, LLVMBuildNot(bld->builder, mask, ""), "");
return LLVMBuildOr(bld->builder, a, b, "");
res = LLVMBuildOr(bld->builder, a, b, "");
if(type.floating) {
LLVMTypeRef vec_type = lp_build_vec_type(type);
res = LLVMBuildBitCast(bld->builder, res, vec_type, "");
}
return res;
}