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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 #ifndef LP_BLD_FORMAT_H
29 #define LP_BLD_FORMAT_H
30 
31 
32 /**
33  * @file
34  * Pixel format helpers.
35  */
36 
37 #include "gallivm/lp_bld.h"
38 #include "gallivm/lp_bld_init.h"
39 
40 #include "pipe/p_format.h"
41 
42 struct util_format_description;
43 struct lp_type;
44 struct lp_build_context;
45 
46 
47 #define LP_BUILD_FORMAT_CACHE_DEBUG 0
48 /*
49  * Block cache
50  *
51  * Optional block cache to be used when unpacking big pixel blocks.
52  * Must be a power of 2
53  */
54 
55 #define LP_BUILD_FORMAT_CACHE_SIZE 128
56 
57 /*
58  * Note: cache_data needs 16 byte alignment.
59  */
60 struct lp_build_format_cache
61 {
62    PIPE_ALIGN_VAR(16) uint32_t cache_data[LP_BUILD_FORMAT_CACHE_SIZE][4][4];
63    uint64_t cache_tags[LP_BUILD_FORMAT_CACHE_SIZE];
64 #if LP_BUILD_FORMAT_CACHE_DEBUG
65    uint64_t cache_access_total;
66    uint64_t cache_access_miss;
67 #endif
68 };
69 
70 
71 enum {
72    LP_BUILD_FORMAT_CACHE_MEMBER_DATA = 0,
73    LP_BUILD_FORMAT_CACHE_MEMBER_TAGS,
74 #if LP_BUILD_FORMAT_CACHE_DEBUG
75    LP_BUILD_FORMAT_CACHE_MEMBER_ACCESS_TOTAL,
76    LP_BUILD_FORMAT_CACHE_MEMBER_ACCESS_MISS,
77 #endif
78    LP_BUILD_FORMAT_CACHE_MEMBER_COUNT
79 };
80 
81 
82 LLVMTypeRef
83 lp_build_format_cache_type(struct gallivm_state *gallivm);
84 
85 
86 /*
87  * AoS
88  */
89 
90 LLVMValueRef
91 lp_build_format_swizzle_aos(const struct util_format_description *desc,
92                             struct lp_build_context *bld,
93                             LLVMValueRef unswizzled);
94 
95 LLVMValueRef
96 lp_build_pack_rgba_aos(struct gallivm_state *gallivm,
97                        const struct util_format_description *desc,
98                        LLVMValueRef rgba);
99 
100 LLVMValueRef
101 lp_build_fetch_rgba_aos(struct gallivm_state *gallivm,
102                         const struct util_format_description *format_desc,
103                         struct lp_type type,
104                         boolean aligned,
105                         LLVMValueRef base_ptr,
106                         LLVMValueRef offset,
107                         LLVMValueRef i,
108                         LLVMValueRef j,
109                         LLVMValueRef cache);
110 
111 LLVMValueRef
112 lp_build_fetch_rgba_aos_array(struct gallivm_state *gallivm,
113                         const struct util_format_description *format_desc,
114                         struct lp_type type,
115                         LLVMValueRef base_ptr,
116                         LLVMValueRef offset);
117 
118 
119 /*
120  * SoA
121  */
122 
123 void
124 lp_build_format_swizzle_soa(const struct util_format_description *format_desc,
125                             struct lp_build_context *bld,
126                             const LLVMValueRef unswizzled[4],
127                             LLVMValueRef swizzled_out[4]);
128 
129 void
130 lp_build_unpack_rgba_soa(struct gallivm_state *gallivm,
131                          const struct util_format_description *format_desc,
132                          struct lp_type type,
133                          LLVMValueRef packed,
134                          LLVMValueRef rgba_out[4]);
135 
136 void
137 lp_build_rgba8_to_fi32_soa(struct gallivm_state *gallivm,
138                           struct lp_type dst_type,
139                           LLVMValueRef packed,
140                           LLVMValueRef *rgba);
141 
142 void
143 lp_build_fetch_rgba_soa(struct gallivm_state *gallivm,
144                         const struct util_format_description *format_desc,
145                         struct lp_type type,
146                         boolean aligned,
147                         LLVMValueRef base_ptr,
148                         LLVMValueRef offsets,
149                         LLVMValueRef i,
150                         LLVMValueRef j,
151                         LLVMValueRef cache,
152                         LLVMValueRef rgba_out[4]);
153 
154 /*
155  * YUV
156  */
157 
158 LLVMValueRef
159 lp_build_fetch_subsampled_rgba_aos(struct gallivm_state *gallivm,
160                                    const struct util_format_description *format_desc,
161                                    unsigned n,
162                                    LLVMValueRef base_ptr,
163                                    LLVMValueRef offset,
164                                    LLVMValueRef i,
165                                    LLVMValueRef j);
166 
167 
168 LLVMValueRef
169 lp_build_fetch_cached_texels(struct gallivm_state *gallivm,
170                              const struct util_format_description *format_desc,
171                              unsigned n,
172                              LLVMValueRef base_ptr,
173                              LLVMValueRef offset,
174                              LLVMValueRef i,
175                              LLVMValueRef j,
176                              LLVMValueRef cache);
177 
178 
179 /*
180  * special float formats
181  */
182 
183 LLVMValueRef
184 lp_build_float_to_smallfloat(struct gallivm_state *gallivm,
185                              struct lp_type i32_type,
186                              LLVMValueRef src,
187                              unsigned mantissa_bits,
188                              unsigned exponent_bits,
189                              unsigned mantissa_start,
190                              boolean has_sign);
191 
192 LLVMValueRef
193 lp_build_smallfloat_to_float(struct gallivm_state *gallivm,
194                              struct lp_type f32_type,
195                              LLVMValueRef src,
196                              unsigned mantissa_bits,
197                              unsigned exponent_bits,
198                              unsigned mantissa_start,
199                              boolean has_sign);
200 
201 LLVMValueRef
202 lp_build_float_to_r11g11b10(struct gallivm_state *gallivm,
203                             LLVMValueRef *src);
204 
205 void
206 lp_build_r11g11b10_to_float(struct gallivm_state *gallivm,
207                             LLVMValueRef src,
208                             LLVMValueRef *dst);
209 
210 void
211 lp_build_rgb9e5_to_float(struct gallivm_state *gallivm,
212                          LLVMValueRef src,
213                          LLVMValueRef *dst);
214 
215 LLVMValueRef
216 lp_build_float_to_srgb_packed(struct gallivm_state *gallivm,
217                               const struct util_format_description *dst_fmt,
218                               struct lp_type src_type,
219                               LLVMValueRef *src);
220 
221 LLVMValueRef
222 lp_build_srgb_to_linear(struct gallivm_state *gallivm,
223                         struct lp_type src_type,
224                         unsigned chan_bits,
225                         LLVMValueRef src);
226 
227 
228 #endif /* !LP_BLD_FORMAT_H */
229