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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5564 | serge | 1 | /* |
| 2 | * Copyright (C) 2008-2009 Nicolai Haehnle. |
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| 3 | * |
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| 4 | * All Rights Reserved. |
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| 5 | * |
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| 6 | * Permission is hereby granted, free of charge, to any person obtaining |
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| 7 | * a copy of this software and associated documentation files (the |
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| 8 | * "Software"), to deal in the Software without restriction, including |
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| 9 | * without limitation the rights to use, copy, modify, merge, publish, |
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| 10 | * distribute, sublicense, and/or sell copies of the Software, and to |
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| 11 | * permit persons to whom the Software is furnished to do so, subject to |
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| 12 | * the following conditions: |
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| 13 | * |
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| 14 | * The above copyright notice and this permission notice (including the |
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| 15 | * next paragraph) shall be included in all copies or substantial |
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| 16 | * portions of the Software. |
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| 17 | * |
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| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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| 19 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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| 20 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
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| 21 | * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE |
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| 22 | * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
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| 23 | * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
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| 24 | * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 25 | * |
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| 26 | */ |
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| 27 | |||
| 28 | #include "radeon_program_pair.h" |
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| 29 | |||
| 30 | #include "radeon_compiler_util.h" |
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| 31 | |||
| 32 | #include |
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| 33 | |||
| 34 | /** |
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| 35 | * Return the source slot where we installed the given register access, |
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| 36 | * or -1 if no slot was free anymore. |
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| 37 | */ |
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| 38 | int rc_pair_alloc_source(struct rc_pair_instruction *pair, |
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| 39 | unsigned int rgb, unsigned int alpha, |
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| 40 | rc_register_file file, unsigned int index) |
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| 41 | { |
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| 42 | int candidate = -1; |
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| 43 | int candidate_quality = -1; |
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| 44 | unsigned int alpha_used = 0; |
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| 45 | unsigned int rgb_used = 0; |
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| 46 | int i; |
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| 47 | |||
| 48 | if ((!rgb && !alpha) || file == RC_FILE_NONE) |
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| 49 | return 0; |
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| 50 | |||
| 51 | /* Make sure only one presubtract operation is used per instruction. */ |
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| 52 | if (file == RC_FILE_PRESUB) { |
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| 53 | if (rgb && pair->RGB.Src[RC_PAIR_PRESUB_SRC].Used |
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| 54 | && index != pair->RGB.Src[RC_PAIR_PRESUB_SRC].Index) { |
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| 55 | return -1; |
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| 56 | } |
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| 57 | |||
| 58 | if (alpha && pair->Alpha.Src[RC_PAIR_PRESUB_SRC].Used |
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| 59 | && index != pair->Alpha.Src[RC_PAIR_PRESUB_SRC].Index) { |
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| 60 | return -1; |
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| 61 | } |
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| 62 | } |
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| 63 | |||
| 64 | for(i = 0; i < 3; ++i) { |
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| 65 | int q = 0; |
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| 66 | if (rgb) { |
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| 67 | if (pair->RGB.Src[i].Used) { |
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| 68 | if (pair->RGB.Src[i].File != file || |
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| 69 | pair->RGB.Src[i].Index != index) { |
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| 70 | rgb_used++; |
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| 71 | continue; |
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| 72 | } |
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| 73 | q++; |
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| 74 | } |
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| 75 | } |
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| 76 | if (alpha) { |
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| 77 | if (pair->Alpha.Src[i].Used) { |
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| 78 | if (pair->Alpha.Src[i].File != file || |
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| 79 | pair->Alpha.Src[i].Index != index) { |
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| 80 | alpha_used++; |
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| 81 | continue; |
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| 82 | } |
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| 83 | q++; |
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| 84 | } |
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| 85 | } |
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| 86 | if (q > candidate_quality) { |
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| 87 | candidate_quality = q; |
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| 88 | candidate = i; |
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| 89 | } |
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| 90 | } |
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| 91 | |||
| 92 | if (file == RC_FILE_PRESUB) { |
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| 93 | candidate = RC_PAIR_PRESUB_SRC; |
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| 94 | } else if (candidate < 0 || (rgb && rgb_used > 2) |
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| 95 | || (alpha && alpha_used > 2)) { |
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| 96 | return -1; |
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| 97 | } |
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| 98 | |||
| 99 | /* candidate >= 0 */ |
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| 100 | |||
| 101 | if (rgb) { |
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| 102 | pair->RGB.Src[candidate].Used = 1; |
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| 103 | pair->RGB.Src[candidate].File = file; |
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| 104 | pair->RGB.Src[candidate].Index = index; |
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| 105 | if (candidate == RC_PAIR_PRESUB_SRC) { |
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| 106 | /* For registers with the RC_FILE_PRESUB file, |
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| 107 | * the index stores the presubtract op. */ |
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| 108 | int src_regs = rc_presubtract_src_reg_count(index); |
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| 109 | for(i = 0; i < src_regs; i++) { |
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| 110 | pair->RGB.Src[i].Used = 1; |
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| 111 | } |
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| 112 | } |
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| 113 | } |
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| 114 | if (alpha) { |
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| 115 | pair->Alpha.Src[candidate].Used = 1; |
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| 116 | pair->Alpha.Src[candidate].File = file; |
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| 117 | pair->Alpha.Src[candidate].Index = index; |
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| 118 | if (candidate == RC_PAIR_PRESUB_SRC) { |
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| 119 | /* For registers with the RC_FILE_PRESUB file, |
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| 120 | * the index stores the presubtract op. */ |
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| 121 | int src_regs = rc_presubtract_src_reg_count(index); |
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| 122 | for(i=0; i < src_regs; i++) { |
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| 123 | pair->Alpha.Src[i].Used = 1; |
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| 124 | } |
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| 125 | } |
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| 126 | } |
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| 127 | |||
| 128 | return candidate; |
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| 129 | } |
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| 130 | |||
| 131 | static void pair_foreach_source_callback( |
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| 132 | struct rc_pair_instruction * pair, |
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| 133 | void * data, |
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| 134 | rc_pair_foreach_src_fn cb, |
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| 135 | unsigned int swz, |
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| 136 | unsigned int src) |
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| 137 | { |
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| 138 | /* swz > 3 means that the swizzle is either not used, or a constant |
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| 139 | * swizzle (e.g. 0, 1, 0.5). */ |
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| 140 | if(swz > 3) |
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| 141 | return; |
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| 142 | |||
| 143 | if(swz == RC_SWIZZLE_W) { |
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| 144 | if (src == RC_PAIR_PRESUB_SRC) { |
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| 145 | unsigned int i; |
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| 146 | unsigned int src_count = rc_presubtract_src_reg_count( |
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| 147 | pair->Alpha.Src[RC_PAIR_PRESUB_SRC].Index); |
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| 148 | for(i = 0; i < src_count; i++) { |
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| 149 | cb(data, &pair->Alpha.Src[i]); |
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| 150 | } |
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| 151 | } else { |
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| 152 | cb(data, &pair->Alpha.Src[src]); |
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| 153 | } |
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| 154 | } else { |
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| 155 | if (src == RC_PAIR_PRESUB_SRC) { |
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| 156 | unsigned int i; |
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| 157 | unsigned int src_count = rc_presubtract_src_reg_count( |
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| 158 | pair->RGB.Src[RC_PAIR_PRESUB_SRC].Index); |
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| 159 | for(i = 0; i < src_count; i++) { |
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| 160 | cb(data, &pair->RGB.Src[i]); |
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| 161 | } |
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| 162 | } |
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| 163 | else { |
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| 164 | cb(data, &pair->RGB.Src[src]); |
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| 165 | } |
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| 166 | } |
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| 167 | } |
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| 168 | |||
| 169 | void rc_pair_foreach_source_that_alpha_reads( |
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| 170 | struct rc_pair_instruction * pair, |
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| 171 | void * data, |
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| 172 | rc_pair_foreach_src_fn cb) |
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| 173 | { |
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| 174 | unsigned int i; |
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| 175 | const struct rc_opcode_info * info = |
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| 176 | rc_get_opcode_info(pair->Alpha.Opcode); |
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| 177 | for(i = 0; i < info->NumSrcRegs; i++) { |
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| 178 | pair_foreach_source_callback(pair, data, cb, |
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| 179 | GET_SWZ(pair->Alpha.Arg[i].Swizzle, 0), |
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| 180 | pair->Alpha.Arg[i].Source); |
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| 181 | } |
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| 182 | } |
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| 183 | |||
| 184 | void rc_pair_foreach_source_that_rgb_reads( |
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| 185 | struct rc_pair_instruction * pair, |
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| 186 | void * data, |
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| 187 | rc_pair_foreach_src_fn cb) |
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| 188 | { |
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| 189 | unsigned int i; |
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| 190 | const struct rc_opcode_info * info = |
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| 191 | rc_get_opcode_info(pair->RGB.Opcode); |
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| 192 | for(i = 0; i < info->NumSrcRegs; i++) { |
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| 193 | unsigned int chan; |
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| 194 | unsigned int swz = RC_SWIZZLE_UNUSED; |
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| 195 | /* Find a swizzle that is either X,Y,Z,or W. We assume here |
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| 196 | * that if one channel swizzles X,Y, or Z, then none of the |
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| 197 | * other channels swizzle W, and vice-versa. */ |
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| 198 | for(chan = 0; chan < 4; chan++) { |
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| 199 | swz = GET_SWZ(pair->RGB.Arg[i].Swizzle, chan); |
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| 200 | if(swz == RC_SWIZZLE_X || swz == RC_SWIZZLE_Y |
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| 201 | || swz == RC_SWIZZLE_Z || swz == RC_SWIZZLE_W) |
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| 202 | continue; |
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| 203 | } |
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| 204 | pair_foreach_source_callback(pair, data, cb, |
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| 205 | swz, |
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| 206 | pair->RGB.Arg[i].Source); |
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| 207 | } |
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| 208 | } |
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| 209 | |||
| 210 | struct rc_pair_instruction_source * rc_pair_get_src( |
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| 211 | struct rc_pair_instruction * pair_inst, |
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| 212 | struct rc_pair_instruction_arg * arg) |
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| 213 | { |
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| 214 | unsigned int type; |
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| 215 | |||
| 216 | type = rc_source_type_swz(arg->Swizzle); |
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| 217 | |||
| 218 | if (type & RC_SOURCE_RGB) { |
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| 219 | return &pair_inst->RGB.Src[arg->Source]; |
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| 220 | } else if (type & RC_SOURCE_ALPHA) { |
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| 221 | return &pair_inst->Alpha.Src[arg->Source]; |
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| 222 | } else { |
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| 223 | return NULL; |
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| 224 | } |
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| 225 | } |
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| 226 | |||
| 227 | int rc_pair_get_src_index( |
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| 228 | struct rc_pair_instruction * pair_inst, |
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| 229 | struct rc_pair_instruction_source * src) |
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| 230 | { |
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| 231 | int i; |
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| 232 | for (i = 0; i < 3; i++) { |
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| 233 | if (&pair_inst->RGB.Src[i] == src |
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| 234 | || &pair_inst->Alpha.Src[i] == src) { |
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| 235 | return i; |
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| 236 | } |
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| 237 | } |
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| 238 | return -1; |
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| 239 | } |