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/**************************************************************************
*
* Copyright 2009 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/**
* Alpha testing to LLVM IR translation.
*
* @author Jose Fonseca <jfonseca@vmware.com>
*/
#include "pipe/p_state.h"
#include "lp_bld_type.h"
#include "lp_bld_const.h"
#include "lp_bld_arit.h"
#include "lp_bld_logic.h"
#include "lp_bld_flow.h"
#include "lp_bld_debug.h"
#include "lp_bld_alpha.h"
void
lp_build_alpha_test(LLVMBuilderRef builder,
const struct pipe_alpha_state *state,
union lp_type type,
struct lp_build_mask_context *mask,
LLVMValueRef alpha)
{
struct lp_build_context bld;
lp_build_context_init(&bld, builder, type);
if(state->enabled) {
LLVMValueRef ref = lp_build_const_uni(type, state->ref_value);
LLVMValueRef test = lp_build_cmp(&bld, state->func, alpha, ref);
lp_build_name(test, "alpha_mask");
lp_build_mask_update(mask, test);
}
}
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