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      1 /**************************************************************************
      2  *
      3  * Copyright 2009 VMware, Inc.
      4  * All Rights Reserved.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the
      8  * "Software"), to deal in the Software without restriction, including
      9  * without limitation the rights to use, copy, modify, merge, publish,
     10  * distribute, sub license, and/or sell copies of the Software, and to
     11  * permit persons to whom the Software is furnished to do so, subject to
     12  * the following conditions:
     13  *
     14  * The above copyright notice and this permission notice (including the
     15  * next paragraph) shall be included in all copies or substantial portions
     16  * of the Software.
     17  *
     18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
     21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
     22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
     23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
     24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     25  *
     26  **************************************************************************/
     27 
     28 
     29 /**
     30  * Depth/stencil testing to LLVM IR translation.
     31  *
     32  * @author Jose Fonseca <jfonseca (at) vmware.com>
     33  */
     34 
     35 #ifndef LP_BLD_DEPTH_H
     36 #define LP_BLD_DEPTH_H
     37 
     38 
     39 #include "pipe/p_compiler.h"
     40 #include "pipe/p_state.h"
     41 
     42 #include "gallivm/lp_bld.h"
     43 
     44 
     45 struct pipe_depth_state;
     46 struct gallivm_state;
     47 struct util_format_description;
     48 struct lp_type;
     49 struct lp_build_mask_context;
     50 
     51 
     52 struct lp_type
     53 lp_depth_type(const struct util_format_description *format_desc,
     54               unsigned length);
     55 
     56 
     57 void
     58 lp_build_depth_stencil_test(struct gallivm_state *gallivm,
     59                             const struct pipe_depth_state *depth,
     60                             const struct pipe_stencil_state stencil[2],
     61                             struct lp_type type,
     62                             const struct util_format_description *format_desc,
     63                             struct lp_build_mask_context *mask,
     64                             LLVMValueRef stencil_refs[2],
     65                             LLVMValueRef zs_src,
     66                             LLVMValueRef zs_dst_ptr,
     67                             LLVMValueRef facing,
     68                             LLVMValueRef *zs_value,
     69                             boolean do_branch);
     70 
     71 void
     72 lp_build_depth_write(LLVMBuilderRef builder,
     73                      const struct util_format_description *format_desc,
     74                      LLVMValueRef zs_dst_ptr,
     75                      LLVMValueRef zs_value);
     76 
     77 void
     78 lp_build_deferred_depth_write(struct gallivm_state *gallivm,
     79                               struct lp_type z_src_type,
     80                               const struct util_format_description *format_desc,
     81                               struct lp_build_mask_context *mask,
     82                               LLVMValueRef zs_dst_ptr,
     83                               LLVMValueRef zs_value);
     84 
     85 void
     86 lp_build_occlusion_count(struct gallivm_state *gallivm,
     87                          struct lp_type type,
     88                          LLVMValueRef maskvalue,
     89                          LLVMValueRef counter);
     90 
     91 #endif /* !LP_BLD_DEPTH_H */
     92