José Fonseca | f311bac | 2009-08-23 14:25:31 +0100 | [diff] [blame] | 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 | |
José Fonseca | 47d241b | 2009-10-25 09:09:23 +0000 | [diff] [blame] | 28 | /** |
| 29 | * @file |
| 30 | * AoS pixel format manipulation. |
| 31 | * |
| 32 | * @author Jose Fonseca <jfonseca@vmware.com> |
| 33 | */ |
José Fonseca | f311bac | 2009-08-23 14:25:31 +0100 | [diff] [blame] | 34 | |
José Fonseca | 47d241b | 2009-10-25 09:09:23 +0000 | [diff] [blame] | 35 | |
| 36 | #include "util/u_cpu_detect.h" |
José Fonseca | f311bac | 2009-08-23 14:25:31 +0100 | [diff] [blame] | 37 | #include "util/u_format.h" |
| 38 | |
José Fonseca | 47d241b | 2009-10-25 09:09:23 +0000 | [diff] [blame] | 39 | #include "lp_bld_type.h" |
| 40 | #include "lp_bld_const.h" |
José Fonseca | 47d241b | 2009-10-25 09:09:23 +0000 | [diff] [blame] | 41 | #include "lp_bld_swizzle.h" |
José Fonseca | f311bac | 2009-08-23 14:25:31 +0100 | [diff] [blame] | 42 | #include "lp_bld_format.h" |
| 43 | |
| 44 | |
José Fonseca | 47d241b | 2009-10-25 09:09:23 +0000 | [diff] [blame] | 45 | /** |
| 46 | * Unpack a single pixel into its RGBA components. |
| 47 | * |
| 48 | * @param packed integer. |
| 49 | * |
| 50 | * @return RGBA in a 4 floats vector. |
| 51 | * |
| 52 | * XXX: This is mostly for reference and testing -- operating a single pixel at |
| 53 | * a time is rarely if ever needed. |
| 54 | */ |
José Fonseca | f311bac | 2009-08-23 14:25:31 +0100 | [diff] [blame] | 55 | LLVMValueRef |
José Fonseca | 866fbac | 2009-09-07 14:24:31 +0100 | [diff] [blame] | 56 | lp_build_unpack_rgba_aos(LLVMBuilderRef builder, |
José Fonseca | 232b586 | 2009-10-22 20:58:35 +0100 | [diff] [blame] | 57 | const struct util_format_description *desc, |
José Fonseca | 866fbac | 2009-09-07 14:24:31 +0100 | [diff] [blame] | 58 | LLVMValueRef packed) |
José Fonseca | f311bac | 2009-08-23 14:25:31 +0100 | [diff] [blame] | 59 | { |
José Fonseca | f311bac | 2009-08-23 14:25:31 +0100 | [diff] [blame] | 60 | LLVMTypeRef type; |
| 61 | LLVMValueRef shifted, casted, scaled, masked; |
| 62 | LLVMValueRef shifts[4]; |
| 63 | LLVMValueRef masks[4]; |
| 64 | LLVMValueRef scales[4]; |
| 65 | LLVMValueRef swizzles[4]; |
| 66 | LLVMValueRef aux[4]; |
| 67 | bool normalized; |
| 68 | int empty_channel; |
| 69 | unsigned shift; |
| 70 | unsigned i; |
| 71 | |
José Fonseca | f311bac | 2009-08-23 14:25:31 +0100 | [diff] [blame] | 72 | /* FIXME: Support more formats */ |
| 73 | assert(desc->layout == UTIL_FORMAT_LAYOUT_ARITH); |
| 74 | assert(desc->block.width == 1); |
| 75 | assert(desc->block.height == 1); |
| 76 | assert(desc->block.bits <= 32); |
| 77 | |
| 78 | type = LLVMIntType(desc->block.bits); |
| 79 | |
| 80 | /* Do the intermediate integer computations with 32bit integers since it |
| 81 | * matches floating point size */ |
| 82 | if (desc->block.bits < 32) |
| 83 | packed = LLVMBuildZExt(builder, packed, LLVMInt32Type(), ""); |
| 84 | |
| 85 | /* Broadcast the packed value to all four channels */ |
| 86 | packed = LLVMBuildInsertElement(builder, |
| 87 | LLVMGetUndef(LLVMVectorType(LLVMInt32Type(), 4)), |
| 88 | packed, |
| 89 | LLVMConstNull(LLVMInt32Type()), |
| 90 | ""); |
| 91 | packed = LLVMBuildShuffleVector(builder, |
| 92 | packed, |
| 93 | LLVMGetUndef(LLVMVectorType(LLVMInt32Type(), 4)), |
| 94 | LLVMConstNull(LLVMVectorType(LLVMInt32Type(), 4)), |
| 95 | ""); |
| 96 | |
| 97 | /* Initialize vector constants */ |
| 98 | normalized = FALSE; |
| 99 | empty_channel = -1; |
| 100 | shift = 0; |
| 101 | for (i = 0; i < 4; ++i) { |
| 102 | unsigned bits = desc->channel[i].size; |
| 103 | |
| 104 | if (desc->channel[i].type == UTIL_FORMAT_TYPE_VOID) { |
| 105 | shifts[i] = LLVMGetUndef(LLVMInt32Type()); |
| 106 | masks[i] = LLVMConstNull(LLVMInt32Type()); |
| 107 | scales[i] = LLVMConstNull(LLVMFloatType()); |
| 108 | empty_channel = i; |
| 109 | } |
| 110 | else { |
| 111 | unsigned mask = (1 << bits) - 1; |
| 112 | |
| 113 | assert(desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED); |
| 114 | assert(bits < 32); |
| 115 | |
| 116 | shifts[i] = LLVMConstInt(LLVMInt32Type(), shift, 0); |
| 117 | masks[i] = LLVMConstInt(LLVMInt32Type(), mask, 0); |
| 118 | |
| 119 | if (desc->channel[i].normalized) { |
| 120 | scales[i] = LLVMConstReal(LLVMFloatType(), 1.0/mask); |
| 121 | normalized = TRUE; |
| 122 | } |
| 123 | else |
| 124 | scales[i] = LLVMConstReal(LLVMFloatType(), 1.0); |
| 125 | } |
| 126 | |
| 127 | shift += bits; |
| 128 | } |
| 129 | |
| 130 | shifted = LLVMBuildLShr(builder, packed, LLVMConstVector(shifts, 4), ""); |
| 131 | masked = LLVMBuildAnd(builder, shifted, LLVMConstVector(masks, 4), ""); |
Vinson Lee | 31d1822 | 2009-12-28 00:44:30 -0800 | [diff] [blame] | 132 | /* UIToFP can't be expressed in SSE2 */ |
José Fonseca | f311bac | 2009-08-23 14:25:31 +0100 | [diff] [blame] | 133 | casted = LLVMBuildSIToFP(builder, masked, LLVMVectorType(LLVMFloatType(), 4), ""); |
| 134 | |
| 135 | if (normalized) |
| 136 | scaled = LLVMBuildMul(builder, casted, LLVMConstVector(scales, 4), ""); |
| 137 | else |
| 138 | scaled = casted; |
| 139 | |
| 140 | for (i = 0; i < 4; ++i) |
| 141 | aux[i] = LLVMGetUndef(LLVMFloatType()); |
| 142 | |
| 143 | for (i = 0; i < 4; ++i) { |
| 144 | enum util_format_swizzle swizzle = desc->swizzle[i]; |
| 145 | |
| 146 | switch (swizzle) { |
| 147 | case UTIL_FORMAT_SWIZZLE_X: |
| 148 | case UTIL_FORMAT_SWIZZLE_Y: |
| 149 | case UTIL_FORMAT_SWIZZLE_Z: |
| 150 | case UTIL_FORMAT_SWIZZLE_W: |
| 151 | swizzles[i] = LLVMConstInt(LLVMInt32Type(), swizzle, 0); |
| 152 | break; |
| 153 | case UTIL_FORMAT_SWIZZLE_0: |
| 154 | assert(empty_channel >= 0); |
| 155 | swizzles[i] = LLVMConstInt(LLVMInt32Type(), empty_channel, 0); |
| 156 | break; |
| 157 | case UTIL_FORMAT_SWIZZLE_1: |
| 158 | swizzles[i] = LLVMConstInt(LLVMInt32Type(), 4, 0); |
| 159 | aux[0] = LLVMConstReal(LLVMFloatType(), 1.0); |
| 160 | break; |
| 161 | case UTIL_FORMAT_SWIZZLE_NONE: |
| 162 | swizzles[i] = LLVMGetUndef(LLVMFloatType()); |
| 163 | assert(0); |
| 164 | break; |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | return LLVMBuildShuffleVector(builder, scaled, LLVMConstVector(aux, 4), LLVMConstVector(swizzles, 4), ""); |
| 169 | } |
| 170 | |
| 171 | |
José Fonseca | 47d241b | 2009-10-25 09:09:23 +0000 | [diff] [blame] | 172 | /** |
| 173 | * Take a vector with packed pixels and unpack into a rgba8 vector. |
| 174 | * |
| 175 | * Formats with bit depth smaller than 32bits are accepted, but they must be |
| 176 | * padded to 32bits. |
| 177 | */ |
| 178 | LLVMValueRef |
| 179 | lp_build_unpack_rgba8_aos(LLVMBuilderRef builder, |
| 180 | const struct util_format_description *desc, |
| 181 | struct lp_type type, |
| 182 | LLVMValueRef packed) |
| 183 | { |
| 184 | struct lp_build_context bld; |
| 185 | bool rgba8; |
| 186 | LLVMValueRef res; |
| 187 | unsigned i; |
| 188 | |
| 189 | lp_build_context_init(&bld, builder, type); |
| 190 | |
| 191 | /* FIXME: Support more formats */ |
| 192 | assert(desc->layout == UTIL_FORMAT_LAYOUT_ARITH); |
| 193 | assert(desc->block.width == 1); |
| 194 | assert(desc->block.height == 1); |
| 195 | assert(desc->block.bits <= 32); |
| 196 | |
| 197 | assert(!type.floating); |
| 198 | assert(!type.fixed); |
| 199 | assert(type.norm); |
| 200 | assert(type.width == 8); |
| 201 | assert(type.length % 4 == 0); |
| 202 | |
| 203 | rgba8 = TRUE; |
| 204 | for(i = 0; i < 4; ++i) { |
| 205 | assert(desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED || |
| 206 | desc->channel[i].type == UTIL_FORMAT_TYPE_VOID); |
| 207 | if(desc->channel[0].size != 8) |
| 208 | rgba8 = FALSE; |
| 209 | } |
| 210 | |
| 211 | if(rgba8) { |
| 212 | /* |
| 213 | * The pixel is already in a rgba8 format variant. All it is necessary |
| 214 | * is to swizzle the channels. |
| 215 | */ |
| 216 | |
| 217 | unsigned char swizzles[4]; |
| 218 | boolean zeros[4]; /* bitwise AND mask */ |
| 219 | boolean ones[4]; /* bitwise OR mask */ |
| 220 | boolean swizzles_needed = FALSE; |
| 221 | boolean zeros_needed = FALSE; |
| 222 | boolean ones_needed = FALSE; |
| 223 | |
| 224 | for(i = 0; i < 4; ++i) { |
| 225 | enum util_format_swizzle swizzle = desc->swizzle[i]; |
| 226 | |
| 227 | /* Initialize with the no-op case */ |
| 228 | swizzles[i] = util_cpu_caps.little_endian ? 3 - i : i; |
| 229 | zeros[i] = TRUE; |
| 230 | ones[i] = FALSE; |
| 231 | |
| 232 | switch (swizzle) { |
| 233 | case UTIL_FORMAT_SWIZZLE_X: |
| 234 | case UTIL_FORMAT_SWIZZLE_Y: |
| 235 | case UTIL_FORMAT_SWIZZLE_Z: |
| 236 | case UTIL_FORMAT_SWIZZLE_W: |
| 237 | if(swizzle != swizzles[i]) { |
| 238 | swizzles[i] = swizzle; |
| 239 | swizzles_needed = TRUE; |
| 240 | } |
| 241 | break; |
| 242 | case UTIL_FORMAT_SWIZZLE_0: |
| 243 | zeros[i] = FALSE; |
| 244 | zeros_needed = TRUE; |
| 245 | break; |
| 246 | case UTIL_FORMAT_SWIZZLE_1: |
| 247 | ones[i] = TRUE; |
| 248 | ones_needed = TRUE; |
| 249 | break; |
| 250 | case UTIL_FORMAT_SWIZZLE_NONE: |
| 251 | assert(0); |
| 252 | break; |
| 253 | } |
| 254 | } |
| 255 | |
| 256 | res = packed; |
| 257 | |
| 258 | if(swizzles_needed) |
| 259 | res = lp_build_swizzle1_aos(&bld, res, swizzles); |
| 260 | |
| 261 | if(zeros_needed) { |
| 262 | /* Mask out zero channels */ |
| 263 | LLVMValueRef mask = lp_build_const_mask_aos(type, zeros); |
| 264 | res = LLVMBuildAnd(builder, res, mask, ""); |
| 265 | } |
| 266 | |
| 267 | if(ones_needed) { |
| 268 | /* Or one channels */ |
| 269 | LLVMValueRef mask = lp_build_const_mask_aos(type, ones); |
| 270 | res = LLVMBuildOr(builder, res, mask, ""); |
| 271 | } |
| 272 | } |
| 273 | else { |
| 274 | /* FIXME */ |
| 275 | assert(0); |
| 276 | res = lp_build_undef(type); |
| 277 | } |
| 278 | |
| 279 | return res; |
| 280 | } |
| 281 | |
| 282 | |
| 283 | /** |
| 284 | * Pack a single pixel. |
| 285 | * |
| 286 | * @param rgba 4 float vector with the unpacked components. |
| 287 | * |
| 288 | * XXX: This is mostly for reference and testing -- operating a single pixel at |
| 289 | * a time is rarely if ever needed. |
| 290 | */ |
José Fonseca | f311bac | 2009-08-23 14:25:31 +0100 | [diff] [blame] | 291 | LLVMValueRef |
José Fonseca | 866fbac | 2009-09-07 14:24:31 +0100 | [diff] [blame] | 292 | lp_build_pack_rgba_aos(LLVMBuilderRef builder, |
José Fonseca | 17afb6d | 2009-10-22 21:06:03 +0100 | [diff] [blame] | 293 | const struct util_format_description *desc, |
José Fonseca | 866fbac | 2009-09-07 14:24:31 +0100 | [diff] [blame] | 294 | LLVMValueRef rgba) |
José Fonseca | f311bac | 2009-08-23 14:25:31 +0100 | [diff] [blame] | 295 | { |
José Fonseca | f311bac | 2009-08-23 14:25:31 +0100 | [diff] [blame] | 296 | LLVMTypeRef type; |
| 297 | LLVMValueRef packed = NULL; |
| 298 | LLVMValueRef swizzles[4]; |
| 299 | LLVMValueRef shifted, casted, scaled, unswizzled; |
| 300 | LLVMValueRef shifts[4]; |
| 301 | LLVMValueRef scales[4]; |
| 302 | bool normalized; |
| 303 | unsigned shift; |
| 304 | unsigned i, j; |
| 305 | |
José Fonseca | f311bac | 2009-08-23 14:25:31 +0100 | [diff] [blame] | 306 | assert(desc->layout == UTIL_FORMAT_LAYOUT_ARITH); |
| 307 | assert(desc->block.width == 1); |
| 308 | assert(desc->block.height == 1); |
| 309 | |
| 310 | type = LLVMIntType(desc->block.bits); |
| 311 | |
| 312 | /* Unswizzle the color components into the source vector. */ |
| 313 | for (i = 0; i < 4; ++i) { |
| 314 | for (j = 0; j < 4; ++j) { |
| 315 | if (desc->swizzle[j] == i) |
| 316 | break; |
| 317 | } |
| 318 | if (j < 4) |
| 319 | swizzles[i] = LLVMConstInt(LLVMInt32Type(), j, 0); |
| 320 | else |
| 321 | swizzles[i] = LLVMGetUndef(LLVMInt32Type()); |
| 322 | } |
| 323 | |
| 324 | unswizzled = LLVMBuildShuffleVector(builder, rgba, |
| 325 | LLVMGetUndef(LLVMVectorType(LLVMFloatType(), 4)), |
| 326 | LLVMConstVector(swizzles, 4), ""); |
| 327 | |
| 328 | normalized = FALSE; |
| 329 | shift = 0; |
| 330 | for (i = 0; i < 4; ++i) { |
| 331 | unsigned bits = desc->channel[i].size; |
| 332 | |
| 333 | if (desc->channel[i].type == UTIL_FORMAT_TYPE_VOID) { |
| 334 | shifts[i] = LLVMGetUndef(LLVMInt32Type()); |
| 335 | scales[i] = LLVMGetUndef(LLVMFloatType()); |
| 336 | } |
| 337 | else { |
| 338 | unsigned mask = (1 << bits) - 1; |
| 339 | |
| 340 | assert(desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED); |
| 341 | assert(bits < 32); |
| 342 | |
| 343 | shifts[i] = LLVMConstInt(LLVMInt32Type(), shift, 0); |
| 344 | |
| 345 | if (desc->channel[i].normalized) { |
| 346 | scales[i] = LLVMConstReal(LLVMFloatType(), mask); |
| 347 | normalized = TRUE; |
| 348 | } |
| 349 | else |
| 350 | scales[i] = LLVMConstReal(LLVMFloatType(), 1.0); |
| 351 | } |
| 352 | |
| 353 | shift += bits; |
| 354 | } |
| 355 | |
| 356 | if (normalized) |
| 357 | scaled = LLVMBuildMul(builder, unswizzled, LLVMConstVector(scales, 4), ""); |
| 358 | else |
| 359 | scaled = unswizzled; |
| 360 | |
| 361 | casted = LLVMBuildFPToSI(builder, scaled, LLVMVectorType(LLVMInt32Type(), 4), ""); |
| 362 | |
| 363 | shifted = LLVMBuildShl(builder, casted, LLVMConstVector(shifts, 4), ""); |
| 364 | |
| 365 | /* Bitwise or all components */ |
| 366 | for (i = 0; i < 4; ++i) { |
| 367 | if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED) { |
| 368 | LLVMValueRef component = LLVMBuildExtractElement(builder, shifted, LLVMConstInt(LLVMInt32Type(), i, 0), ""); |
| 369 | if (packed) |
| 370 | packed = LLVMBuildOr(builder, packed, component, ""); |
| 371 | else |
| 372 | packed = component; |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | if (!packed) |
| 377 | packed = LLVMGetUndef(LLVMInt32Type()); |
| 378 | |
| 379 | if (desc->block.bits < 32) |
| 380 | packed = LLVMBuildTrunc(builder, packed, type, ""); |
| 381 | |
| 382 | return packed; |
| 383 | } |