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llvmpipe: Use lp_build_select_bitwise() where appropriate.

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Fixes fdo 29269.
This commit is contained in:
José Fonseca
2010-07-27 13:09:12 +01:00
parent 2a45972fb2
commit 4fbffb7d90
1 changed files with 11 additions and 11 deletions
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src/gallium/drivers/llvmpipe/lp_bld_depth.c
+11 -11
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@@ -258,16 +258,16 @@ lp_build_stencil_op_single(struct lp_build_context *bld,
}
if (stencil->writemask != stencilMax) {
/* compute res = (res & mask) | (stencilVals & ~mask) */
LLVMValueRef mask = lp_build_const_int_vec(type, stencil->writemask);
LLVMValueRef cmask = LLVMBuildNot(bld->builder, mask, "notWritemask");
LLVMValueRef t1 = LLVMBuildAnd(bld->builder, res, mask, "t1");
LLVMValueRef t2 = LLVMBuildAnd(bld->builder, stencilVals, cmask, "t2");
res = LLVMBuildOr(bld->builder, t1, t2, "t1_or_t2");
/* mask &= stencil->writemask */
LLVMValueRef writemask = lp_build_const_int_vec(type, stencil->writemask);
mask = LLVMBuildAnd(bld->builder, mask, writemask, "");
/* res = (res & mask) | (stencilVals & ~mask) */
res = lp_build_select_bitwise(bld, writemask, res, stencilVals);
}
else {
/* res = mask ? res : stencilVals */
res = lp_build_select(bld, mask, res, stencilVals);
}
/* only the update the vector elements enabled by 'mask' */
res = lp_build_select(bld, mask, res, stencilVals);
return res;
}
@@ -662,9 +662,9 @@ lp_build_depth_stencil_test(LLVMBuilderRef builder,
}
/* Mix the old and new Z buffer values.
* z_dst[i] = zselectmask[i] ? z_src[i] : z_dst[i]
* z_dst[i] = (zselectmask[i] & z_src[i]) | (~zselectmask[i] & z_dst[i])
*/
z_dst = lp_build_select(&bld, zselectmask, z_src, z_dst);
z_dst = lp_build_select_bitwise(&bld, zselectmask, z_src, z_dst);
}
if (stencil[0].enabled) {