a3faa22b9978608091edf8c7a8c254c234f42a6f
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29 * Alpha testing to LLVM IR translation.
31 * @author Jose Fonseca <jfonseca@vmware.com>
34 #include "pipe/p_state.h"
36 #include "lp_bld_type.h"
37 #include "lp_bld_const.h"
38 #include "lp_bld_arit.h"
39 #include "lp_bld_logic.h"
40 #include "lp_bld_debug.h"
41 #include "lp_bld_alpha.h"
45 lp_build_alpha_test(LLVMBuilderRef builder
,
46 const struct pipe_alpha_state
*state
,
51 struct lp_build_context bld
;
53 lp_build_context_init(&bld
, builder
, type
);
56 LLVMValueRef ref
= lp_build_const_uni(type
, state
->ref_value
);
57 LLVMValueRef test
= lp_build_cmp(&bld
, state
->func
, alpha
, ref
);
59 lp_build_name(test
, "alpha_mask");
62 mask
= LLVMBuildAnd(builder
, mask
, test
, "");