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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@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 z_src_type,
62                             const struct util_format_description *format_desc,
63                             struct lp_build_mask_context *mask,
64                             LLVMValueRef stencil_refs[2],
65                             LLVMValueRef z_src,
66                             LLVMValueRef z_fb,
67                             LLVMValueRef s_fb,
68                             LLVMValueRef face,
69                             LLVMValueRef *z_value,
70                             LLVMValueRef *s_value,
71                             boolean do_branch);
72 
73 void
74 lp_build_depth_stencil_load_swizzled(struct gallivm_state *gallivm,
75                                      struct lp_type z_src_type,
76                                      const struct util_format_description *format_desc,
77                                      boolean is_1d,
78                                      LLVMValueRef depth_ptr,
79                                      LLVMValueRef depth_stride,
80                                      LLVMValueRef *z_fb,
81                                      LLVMValueRef *s_fb,
82                                      LLVMValueRef loop_counter);
83 
84 void
85 lp_build_depth_stencil_write_swizzled(struct gallivm_state *gallivm,
86                                       struct lp_type z_src_type,
87                                       const struct util_format_description *format_desc,
88                                       boolean is_1d,
89                                       struct lp_build_mask_context *mask,
90                                       LLVMValueRef z_fb,
91                                       LLVMValueRef s_fb,
92                                       LLVMValueRef loop_counter,
93                                       LLVMValueRef depth_ptr,
94                                       LLVMValueRef depth_stride,
95                                       LLVMValueRef z_value,
96                                       LLVMValueRef s_value);
97 
98 
99 void
100 lp_build_occlusion_count(struct gallivm_state *gallivm,
101                          struct lp_type type,
102                          LLVMValueRef maskvalue,
103                          LLVMValueRef counter);
104 
105 #endif /* !LP_BLD_DEPTH_H */
106