/**************************************************************************
 *
 * Copyright 2009 VMware, Inc.
 * All Rights Reserved.
 *
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 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
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 * 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
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/**
 * Depth/stencil testing to LLVM IR translation.
 *
 * @author Jose Fonseca <jfonseca@vmware.com>
 */

#ifndef LP_BLD_DEPTH_H
#define LP_BLD_DEPTH_H


#include "pipe/p_compiler.h"
#include "pipe/p_state.h"

#include "gallivm/lp_bld.h"

 
struct pipe_depth_state;
struct gallivm_state;
struct util_format_description;
struct lp_type;
struct lp_build_mask_context;


struct lp_type
lp_depth_type(const struct util_format_description *format_desc,
              unsigned length);


void
lp_build_depth_stencil_test(struct gallivm_state *gallivm,
                            const struct pipe_depth_state *depth,
                            const struct pipe_stencil_state stencil[2],
                            struct lp_type type,
                            const struct util_format_description *format_desc,
                            struct lp_build_mask_context *mask,
                            LLVMValueRef stencil_refs[2],
                            LLVMValueRef zs_src,
                            LLVMValueRef zs_dst_ptr,
                            LLVMValueRef facing,
                            LLVMValueRef *zs_value,
                            boolean do_branch);

void
lp_build_depth_write(struct gallivm_state *gallivm,
                     struct lp_type z_src_type,
                     const struct util_format_description *format_desc,
                     LLVMValueRef zs_dst_ptr,
                     LLVMValueRef zs_value);

void
lp_build_deferred_depth_write(struct gallivm_state *gallivm,
                              struct lp_type z_src_type,
                              const struct util_format_description *format_desc,
                              struct lp_build_mask_context *mask,
                              LLVMValueRef zs_dst_ptr,
                              LLVMValueRef zs_value);

void
lp_build_occlusion_count(struct gallivm_state *gallivm,
                         struct lp_type type,
                         LLVMValueRef maskvalue,
                         LLVMValueRef counter);

#endif /* !LP_BLD_DEPTH_H */