1 /************************************************************************** 2 * 3 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. 4 * All Rights Reserved. 5 * Copyright 2008 VMware, Inc. All rights reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the 9 * "Software"), to deal in the Software without restriction, including 10 * without limitation the rights to use, copy, modify, merge, publish, 11 * distribute, sub license, and/or sell copies of the Software, and to 12 * permit persons to whom the Software is furnished to do so, subject to 13 * the following conditions: 14 * 15 * The above copyright notice and this permission notice (including the 16 * next paragraph) shall be included in all copies or substantial portions 17 * of the Software. 18 * 19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 22 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 26 * 27 **************************************************************************/ 28 29 /** 30 * @file 31 * Mipmap generation utility 32 * 33 * @author Brian Paul 34 */ 35 36 37 #include "pipe/p_context.h" 38 #include "util/u_debug.h" 39 #include "pipe/p_defines.h" 40 #include "util/u_inlines.h" 41 #include "pipe/p_shader_tokens.h" 42 #include "pipe/p_state.h" 43 44 #include "util/u_format.h" 45 #include "util/u_memory.h" 46 #include "util/u_draw_quad.h" 47 #include "util/u_gen_mipmap.h" 48 #include "util/u_simple_shaders.h" 49 #include "util/u_math.h" 50 #include "util/u_texture.h" 51 #include "util/u_half.h" 52 #include "util/u_surface.h" 53 54 #include "cso_cache/cso_context.h" 55 56 57 struct gen_mipmap_state 58 { 59 struct pipe_context *pipe; 60 struct cso_context *cso; 61 62 struct pipe_blend_state blend_keep_color, blend_write_color; 63 struct pipe_depth_stencil_alpha_state dsa_keep_depth, dsa_write_depth; 64 struct pipe_rasterizer_state rasterizer; 65 struct pipe_sampler_state sampler; 66 struct pipe_vertex_element velem[2]; 67 68 void *vs; 69 70 /** Not all are used, but simplifies code */ 71 void *fs_color[TGSI_TEXTURE_COUNT]; 72 void *fs_depth[TGSI_TEXTURE_COUNT]; 73 74 struct pipe_resource *vbuf; /**< quad vertices */ 75 unsigned vbuf_slot; 76 77 float vertices[4][2][4]; /**< vertex/texcoords for quad */ 78 }; 79 80 81 82 enum dtype 83 { 84 DTYPE_UBYTE, 85 DTYPE_UBYTE_3_3_2, 86 DTYPE_USHORT, 87 DTYPE_USHORT_4_4_4_4, 88 DTYPE_USHORT_5_6_5, 89 DTYPE_USHORT_1_5_5_5_REV, 90 DTYPE_UINT, 91 DTYPE_FLOAT, 92 DTYPE_HALF_FLOAT 93 }; 94 95 96 typedef uint16_t half_float; 97 98 99 /** 100 * \name Support macros for do_row and do_row_3d 101 * 102 * The macro madness is here for two reasons. First, it compacts the code 103 * slightly. Second, it makes it much easier to adjust the specifics of the 104 * filter to tune the rounding characteristics. 105 */ 106 /*@{*/ 107 #define DECLARE_ROW_POINTERS(t, e) \ 108 const t(*rowA)[e] = (const t(*)[e]) srcRowA; \ 109 const t(*rowB)[e] = (const t(*)[e]) srcRowB; \ 110 const t(*rowC)[e] = (const t(*)[e]) srcRowC; \ 111 const t(*rowD)[e] = (const t(*)[e]) srcRowD; \ 112 t(*dst)[e] = (t(*)[e]) dstRow 113 114 #define DECLARE_ROW_POINTERS0(t) \ 115 const t *rowA = (const t *) srcRowA; \ 116 const t *rowB = (const t *) srcRowB; \ 117 const t *rowC = (const t *) srcRowC; \ 118 const t *rowD = (const t *) srcRowD; \ 119 t *dst = (t *) dstRow 120 121 #define FILTER_SUM_3D(Aj, Ak, Bj, Bk, Cj, Ck, Dj, Dk) \ 122 ((unsigned) Aj + (unsigned) Ak \ 123 + (unsigned) Bj + (unsigned) Bk \ 124 + (unsigned) Cj + (unsigned) Ck \ 125 + (unsigned) Dj + (unsigned) Dk \ 126 + 4) >> 3 127 128 #define FILTER_3D(e) \ 129 do { \ 130 dst[i][e] = FILTER_SUM_3D(rowA[j][e], rowA[k][e], \ 131 rowB[j][e], rowB[k][e], \ 132 rowC[j][e], rowC[k][e], \ 133 rowD[j][e], rowD[k][e]); \ 134 } while(0) 135 136 #define FILTER_F_3D(e) \ 137 do { \ 138 dst[i][e] = (rowA[j][e] + rowA[k][e] \ 139 + rowB[j][e] + rowB[k][e] \ 140 + rowC[j][e] + rowC[k][e] \ 141 + rowD[j][e] + rowD[k][e]) * 0.125F; \ 142 } while(0) 143 144 #define FILTER_HF_3D(e) \ 145 do { \ 146 const float aj = util_half_to_float(rowA[j][e]); \ 147 const float ak = util_half_to_float(rowA[k][e]); \ 148 const float bj = util_half_to_float(rowB[j][e]); \ 149 const float bk = util_half_to_float(rowB[k][e]); \ 150 const float cj = util_half_to_float(rowC[j][e]); \ 151 const float ck = util_half_to_float(rowC[k][e]); \ 152 const float dj = util_half_to_float(rowD[j][e]); \ 153 const float dk = util_half_to_float(rowD[k][e]); \ 154 dst[i][e] = util_float_to_half((aj + ak + bj + bk + cj + ck + dj + dk) \ 155 * 0.125F); \ 156 } while(0) 157 /*@}*/ 158 159 160 /** 161 * Average together two rows of a source image to produce a single new 162 * row in the dest image. It's legal for the two source rows to point 163 * to the same data. The source width must be equal to either the 164 * dest width or two times the dest width. 165 * \param datatype GL_UNSIGNED_BYTE, GL_UNSIGNED_SHORT, GL_FLOAT, etc. 166 * \param comps number of components per pixel (1..4) 167 */ 168 static void 169 do_row(enum dtype datatype, uint comps, int srcWidth, 170 const void *srcRowA, const void *srcRowB, 171 int dstWidth, void *dstRow) 172 { 173 const uint k0 = (srcWidth == dstWidth) ? 0 : 1; 174 const uint colStride = (srcWidth == dstWidth) ? 1 : 2; 175 176 assert(comps >= 1); 177 assert(comps <= 4); 178 179 /* This assertion is no longer valid with non-power-of-2 textures 180 assert(srcWidth == dstWidth || srcWidth == 2 * dstWidth); 181 */ 182 183 if (datatype == DTYPE_UBYTE && comps == 4) { 184 uint i, j, k; 185 const ubyte(*rowA)[4] = (const ubyte(*)[4]) srcRowA; 186 const ubyte(*rowB)[4] = (const ubyte(*)[4]) srcRowB; 187 ubyte(*dst)[4] = (ubyte(*)[4]) dstRow; 188 for (i = j = 0, k = k0; i < (uint) dstWidth; 189 i++, j += colStride, k += colStride) { 190 dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; 191 dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; 192 dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; 193 dst[i][3] = (rowA[j][3] + rowA[k][3] + rowB[j][3] + rowB[k][3]) / 4; 194 } 195 } 196 else if (datatype == DTYPE_UBYTE && comps == 3) { 197 uint i, j, k; 198 const ubyte(*rowA)[3] = (const ubyte(*)[3]) srcRowA; 199 const ubyte(*rowB)[3] = (const ubyte(*)[3]) srcRowB; 200 ubyte(*dst)[3] = (ubyte(*)[3]) dstRow; 201 for (i = j = 0, k = k0; i < (uint) dstWidth; 202 i++, j += colStride, k += colStride) { 203 dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; 204 dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; 205 dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; 206 } 207 } 208 else if (datatype == DTYPE_UBYTE && comps == 2) { 209 uint i, j, k; 210 const ubyte(*rowA)[2] = (const ubyte(*)[2]) srcRowA; 211 const ubyte(*rowB)[2] = (const ubyte(*)[2]) srcRowB; 212 ubyte(*dst)[2] = (ubyte(*)[2]) dstRow; 213 for (i = j = 0, k = k0; i < (uint) dstWidth; 214 i++, j += colStride, k += colStride) { 215 dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) >> 2; 216 dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) >> 2; 217 } 218 } 219 else if (datatype == DTYPE_UBYTE && comps == 1) { 220 uint i, j, k; 221 const ubyte *rowA = (const ubyte *) srcRowA; 222 const ubyte *rowB = (const ubyte *) srcRowB; 223 ubyte *dst = (ubyte *) dstRow; 224 for (i = j = 0, k = k0; i < (uint) dstWidth; 225 i++, j += colStride, k += colStride) { 226 dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) >> 2; 227 } 228 } 229 230 else if (datatype == DTYPE_USHORT && comps == 4) { 231 uint i, j, k; 232 const ushort(*rowA)[4] = (const ushort(*)[4]) srcRowA; 233 const ushort(*rowB)[4] = (const ushort(*)[4]) srcRowB; 234 ushort(*dst)[4] = (ushort(*)[4]) dstRow; 235 for (i = j = 0, k = k0; i < (uint) dstWidth; 236 i++, j += colStride, k += colStride) { 237 dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; 238 dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; 239 dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; 240 dst[i][3] = (rowA[j][3] + rowA[k][3] + rowB[j][3] + rowB[k][3]) / 4; 241 } 242 } 243 else if (datatype == DTYPE_USHORT && comps == 3) { 244 uint i, j, k; 245 const ushort(*rowA)[3] = (const ushort(*)[3]) srcRowA; 246 const ushort(*rowB)[3] = (const ushort(*)[3]) srcRowB; 247 ushort(*dst)[3] = (ushort(*)[3]) dstRow; 248 for (i = j = 0, k = k0; i < (uint) dstWidth; 249 i++, j += colStride, k += colStride) { 250 dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; 251 dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; 252 dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; 253 } 254 } 255 else if (datatype == DTYPE_USHORT && comps == 2) { 256 uint i, j, k; 257 const ushort(*rowA)[2] = (const ushort(*)[2]) srcRowA; 258 const ushort(*rowB)[2] = (const ushort(*)[2]) srcRowB; 259 ushort(*dst)[2] = (ushort(*)[2]) dstRow; 260 for (i = j = 0, k = k0; i < (uint) dstWidth; 261 i++, j += colStride, k += colStride) { 262 dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; 263 dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; 264 } 265 } 266 else if (datatype == DTYPE_USHORT && comps == 1) { 267 uint i, j, k; 268 const ushort *rowA = (const ushort *) srcRowA; 269 const ushort *rowB = (const ushort *) srcRowB; 270 ushort *dst = (ushort *) dstRow; 271 for (i = j = 0, k = k0; i < (uint) dstWidth; 272 i++, j += colStride, k += colStride) { 273 dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) / 4; 274 } 275 } 276 277 else if (datatype == DTYPE_FLOAT && comps == 4) { 278 uint i, j, k; 279 const float(*rowA)[4] = (const float(*)[4]) srcRowA; 280 const float(*rowB)[4] = (const float(*)[4]) srcRowB; 281 float(*dst)[4] = (float(*)[4]) dstRow; 282 for (i = j = 0, k = k0; i < (uint) dstWidth; 283 i++, j += colStride, k += colStride) { 284 dst[i][0] = (rowA[j][0] + rowA[k][0] + 285 rowB[j][0] + rowB[k][0]) * 0.25F; 286 dst[i][1] = (rowA[j][1] + rowA[k][1] + 287 rowB[j][1] + rowB[k][1]) * 0.25F; 288 dst[i][2] = (rowA[j][2] + rowA[k][2] + 289 rowB[j][2] + rowB[k][2]) * 0.25F; 290 dst[i][3] = (rowA[j][3] + rowA[k][3] + 291 rowB[j][3] + rowB[k][3]) * 0.25F; 292 } 293 } 294 else if (datatype == DTYPE_FLOAT && comps == 3) { 295 uint i, j, k; 296 const float(*rowA)[3] = (const float(*)[3]) srcRowA; 297 const float(*rowB)[3] = (const float(*)[3]) srcRowB; 298 float(*dst)[3] = (float(*)[3]) dstRow; 299 for (i = j = 0, k = k0; i < (uint) dstWidth; 300 i++, j += colStride, k += colStride) { 301 dst[i][0] = (rowA[j][0] + rowA[k][0] + 302 rowB[j][0] + rowB[k][0]) * 0.25F; 303 dst[i][1] = (rowA[j][1] + rowA[k][1] + 304 rowB[j][1] + rowB[k][1]) * 0.25F; 305 dst[i][2] = (rowA[j][2] + rowA[k][2] + 306 rowB[j][2] + rowB[k][2]) * 0.25F; 307 } 308 } 309 else if (datatype == DTYPE_FLOAT && comps == 2) { 310 uint i, j, k; 311 const float(*rowA)[2] = (const float(*)[2]) srcRowA; 312 const float(*rowB)[2] = (const float(*)[2]) srcRowB; 313 float(*dst)[2] = (float(*)[2]) dstRow; 314 for (i = j = 0, k = k0; i < (uint) dstWidth; 315 i++, j += colStride, k += colStride) { 316 dst[i][0] = (rowA[j][0] + rowA[k][0] + 317 rowB[j][0] + rowB[k][0]) * 0.25F; 318 dst[i][1] = (rowA[j][1] + rowA[k][1] + 319 rowB[j][1] + rowB[k][1]) * 0.25F; 320 } 321 } 322 else if (datatype == DTYPE_FLOAT && comps == 1) { 323 uint i, j, k; 324 const float *rowA = (const float *) srcRowA; 325 const float *rowB = (const float *) srcRowB; 326 float *dst = (float *) dstRow; 327 for (i = j = 0, k = k0; i < (uint) dstWidth; 328 i++, j += colStride, k += colStride) { 329 dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) * 0.25F; 330 } 331 } 332 333 else if (datatype == DTYPE_HALF_FLOAT && comps == 4) { 334 uint i, j, k, comp; 335 const half_float(*rowA)[4] = (const half_float(*)[4]) srcRowA; 336 const half_float(*rowB)[4] = (const half_float(*)[4]) srcRowB; 337 half_float(*dst)[4] = (half_float(*)[4]) dstRow; 338 for (i = j = 0, k = k0; i < (uint) dstWidth; 339 i++, j += colStride, k += colStride) { 340 for (comp = 0; comp < 4; comp++) { 341 float aj, ak, bj, bk; 342 aj = util_half_to_float(rowA[j][comp]); 343 ak = util_half_to_float(rowA[k][comp]); 344 bj = util_half_to_float(rowB[j][comp]); 345 bk = util_half_to_float(rowB[k][comp]); 346 dst[i][comp] = util_float_to_half((aj + ak + bj + bk) * 0.25F); 347 } 348 } 349 } 350 else if (datatype == DTYPE_HALF_FLOAT && comps == 3) { 351 uint i, j, k, comp; 352 const half_float(*rowA)[3] = (const half_float(*)[3]) srcRowA; 353 const half_float(*rowB)[3] = (const half_float(*)[3]) srcRowB; 354 half_float(*dst)[3] = (half_float(*)[3]) dstRow; 355 for (i = j = 0, k = k0; i < (uint) dstWidth; 356 i++, j += colStride, k += colStride) { 357 for (comp = 0; comp < 3; comp++) { 358 float aj, ak, bj, bk; 359 aj = util_half_to_float(rowA[j][comp]); 360 ak = util_half_to_float(rowA[k][comp]); 361 bj = util_half_to_float(rowB[j][comp]); 362 bk = util_half_to_float(rowB[k][comp]); 363 dst[i][comp] = util_float_to_half((aj + ak + bj + bk) * 0.25F); 364 } 365 } 366 } 367 else if (datatype == DTYPE_HALF_FLOAT && comps == 2) { 368 uint i, j, k, comp; 369 const half_float(*rowA)[2] = (const half_float(*)[2]) srcRowA; 370 const half_float(*rowB)[2] = (const half_float(*)[2]) srcRowB; 371 half_float(*dst)[2] = (half_float(*)[2]) dstRow; 372 for (i = j = 0, k = k0; i < (uint) dstWidth; 373 i++, j += colStride, k += colStride) { 374 for (comp = 0; comp < 2; comp++) { 375 float aj, ak, bj, bk; 376 aj = util_half_to_float(rowA[j][comp]); 377 ak = util_half_to_float(rowA[k][comp]); 378 bj = util_half_to_float(rowB[j][comp]); 379 bk = util_half_to_float(rowB[k][comp]); 380 dst[i][comp] = util_float_to_half((aj + ak + bj + bk) * 0.25F); 381 } 382 } 383 } 384 else if (datatype == DTYPE_HALF_FLOAT && comps == 1) { 385 uint i, j, k; 386 const half_float *rowA = (const half_float *) srcRowA; 387 const half_float *rowB = (const half_float *) srcRowB; 388 half_float *dst = (half_float *) dstRow; 389 for (i = j = 0, k = k0; i < (uint) dstWidth; 390 i++, j += colStride, k += colStride) { 391 float aj, ak, bj, bk; 392 aj = util_half_to_float(rowA[j]); 393 ak = util_half_to_float(rowA[k]); 394 bj = util_half_to_float(rowB[j]); 395 bk = util_half_to_float(rowB[k]); 396 dst[i] = util_float_to_half((aj + ak + bj + bk) * 0.25F); 397 } 398 } 399 400 else if (datatype == DTYPE_UINT && comps == 1) { 401 uint i, j, k; 402 const uint *rowA = (const uint *) srcRowA; 403 const uint *rowB = (const uint *) srcRowB; 404 uint *dst = (uint *) dstRow; 405 for (i = j = 0, k = k0; i < (uint) dstWidth; 406 i++, j += colStride, k += colStride) { 407 dst[i] = rowA[j] / 4 + rowA[k] / 4 + rowB[j] / 4 + rowB[k] / 4; 408 } 409 } 410 411 else if (datatype == DTYPE_USHORT_5_6_5 && comps == 3) { 412 uint i, j, k; 413 const ushort *rowA = (const ushort *) srcRowA; 414 const ushort *rowB = (const ushort *) srcRowB; 415 ushort *dst = (ushort *) dstRow; 416 for (i = j = 0, k = k0; i < (uint) dstWidth; 417 i++, j += colStride, k += colStride) { 418 const int rowAr0 = rowA[j] & 0x1f; 419 const int rowAr1 = rowA[k] & 0x1f; 420 const int rowBr0 = rowB[j] & 0x1f; 421 const int rowBr1 = rowB[k] & 0x1f; 422 const int rowAg0 = (rowA[j] >> 5) & 0x3f; 423 const int rowAg1 = (rowA[k] >> 5) & 0x3f; 424 const int rowBg0 = (rowB[j] >> 5) & 0x3f; 425 const int rowBg1 = (rowB[k] >> 5) & 0x3f; 426 const int rowAb0 = (rowA[j] >> 11) & 0x1f; 427 const int rowAb1 = (rowA[k] >> 11) & 0x1f; 428 const int rowBb0 = (rowB[j] >> 11) & 0x1f; 429 const int rowBb1 = (rowB[k] >> 11) & 0x1f; 430 const int red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2; 431 const int green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2; 432 const int blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2; 433 dst[i] = (blue << 11) | (green << 5) | red; 434 } 435 } 436 else if (datatype == DTYPE_USHORT_4_4_4_4 && comps == 4) { 437 uint i, j, k; 438 const ushort *rowA = (const ushort *) srcRowA; 439 const ushort *rowB = (const ushort *) srcRowB; 440 ushort *dst = (ushort *) dstRow; 441 for (i = j = 0, k = k0; i < (uint) dstWidth; 442 i++, j += colStride, k += colStride) { 443 const int rowAr0 = rowA[j] & 0xf; 444 const int rowAr1 = rowA[k] & 0xf; 445 const int rowBr0 = rowB[j] & 0xf; 446 const int rowBr1 = rowB[k] & 0xf; 447 const int rowAg0 = (rowA[j] >> 4) & 0xf; 448 const int rowAg1 = (rowA[k] >> 4) & 0xf; 449 const int rowBg0 = (rowB[j] >> 4) & 0xf; 450 const int rowBg1 = (rowB[k] >> 4) & 0xf; 451 const int rowAb0 = (rowA[j] >> 8) & 0xf; 452 const int rowAb1 = (rowA[k] >> 8) & 0xf; 453 const int rowBb0 = (rowB[j] >> 8) & 0xf; 454 const int rowBb1 = (rowB[k] >> 8) & 0xf; 455 const int rowAa0 = (rowA[j] >> 12) & 0xf; 456 const int rowAa1 = (rowA[k] >> 12) & 0xf; 457 const int rowBa0 = (rowB[j] >> 12) & 0xf; 458 const int rowBa1 = (rowB[k] >> 12) & 0xf; 459 const int red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2; 460 const int green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2; 461 const int blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2; 462 const int alpha = (rowAa0 + rowAa1 + rowBa0 + rowBa1) >> 2; 463 dst[i] = (alpha << 12) | (blue << 8) | (green << 4) | red; 464 } 465 } 466 else if (datatype == DTYPE_USHORT_1_5_5_5_REV && comps == 4) { 467 uint i, j, k; 468 const ushort *rowA = (const ushort *) srcRowA; 469 const ushort *rowB = (const ushort *) srcRowB; 470 ushort *dst = (ushort *) dstRow; 471 for (i = j = 0, k = k0; i < (uint) dstWidth; 472 i++, j += colStride, k += colStride) { 473 const int rowAr0 = rowA[j] & 0x1f; 474 const int rowAr1 = rowA[k] & 0x1f; 475 const int rowBr0 = rowB[j] & 0x1f; 476 const int rowBr1 = rowB[k] & 0x1f; 477 const int rowAg0 = (rowA[j] >> 5) & 0x1f; 478 const int rowAg1 = (rowA[k] >> 5) & 0x1f; 479 const int rowBg0 = (rowB[j] >> 5) & 0x1f; 480 const int rowBg1 = (rowB[k] >> 5) & 0x1f; 481 const int rowAb0 = (rowA[j] >> 10) & 0x1f; 482 const int rowAb1 = (rowA[k] >> 10) & 0x1f; 483 const int rowBb0 = (rowB[j] >> 10) & 0x1f; 484 const int rowBb1 = (rowB[k] >> 10) & 0x1f; 485 const int rowAa0 = (rowA[j] >> 15) & 0x1; 486 const int rowAa1 = (rowA[k] >> 15) & 0x1; 487 const int rowBa0 = (rowB[j] >> 15) & 0x1; 488 const int rowBa1 = (rowB[k] >> 15) & 0x1; 489 const int red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2; 490 const int green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2; 491 const int blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2; 492 const int alpha = (rowAa0 + rowAa1 + rowBa0 + rowBa1) >> 2; 493 dst[i] = (alpha << 15) | (blue << 10) | (green << 5) | red; 494 } 495 } 496 else if (datatype == DTYPE_UBYTE_3_3_2 && comps == 3) { 497 uint i, j, k; 498 const ubyte *rowA = (const ubyte *) srcRowA; 499 const ubyte *rowB = (const ubyte *) srcRowB; 500 ubyte *dst = (ubyte *) dstRow; 501 for (i = j = 0, k = k0; i < (uint) dstWidth; 502 i++, j += colStride, k += colStride) { 503 const int rowAr0 = rowA[j] & 0x3; 504 const int rowAr1 = rowA[k] & 0x3; 505 const int rowBr0 = rowB[j] & 0x3; 506 const int rowBr1 = rowB[k] & 0x3; 507 const int rowAg0 = (rowA[j] >> 2) & 0x7; 508 const int rowAg1 = (rowA[k] >> 2) & 0x7; 509 const int rowBg0 = (rowB[j] >> 2) & 0x7; 510 const int rowBg1 = (rowB[k] >> 2) & 0x7; 511 const int rowAb0 = (rowA[j] >> 5) & 0x7; 512 const int rowAb1 = (rowA[k] >> 5) & 0x7; 513 const int rowBb0 = (rowB[j] >> 5) & 0x7; 514 const int rowBb1 = (rowB[k] >> 5) & 0x7; 515 const int red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2; 516 const int green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2; 517 const int blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2; 518 dst[i] = (blue << 5) | (green << 2) | red; 519 } 520 } 521 else { 522 debug_printf("bad format in do_row()"); 523 } 524 } 525 526 527 /** 528 * Average together four rows of a source image to produce a single new 529 * row in the dest image. It's legal for the two source rows to point 530 * to the same data. The source width must be equal to either the 531 * dest width or two times the dest width. 532 * 533 * \param datatype GL pixel type \c GL_UNSIGNED_BYTE, \c GL_UNSIGNED_SHORT, 534 * \c GL_FLOAT, etc. 535 * \param comps number of components per pixel (1..4) 536 * \param srcWidth Width of a row in the source data 537 * \param srcRowA Pointer to one of the rows of source data 538 * \param srcRowB Pointer to one of the rows of source data 539 * \param srcRowC Pointer to one of the rows of source data 540 * \param srcRowD Pointer to one of the rows of source data 541 * \param dstWidth Width of a row in the destination data 542 * \param srcRowA Pointer to the row of destination data 543 */ 544 static void 545 do_row_3D(enum dtype datatype, uint comps, int srcWidth, 546 const void *srcRowA, const void *srcRowB, 547 const void *srcRowC, const void *srcRowD, 548 int dstWidth, void *dstRow) 549 { 550 const uint k0 = (srcWidth == dstWidth) ? 0 : 1; 551 const uint colStride = (srcWidth == dstWidth) ? 1 : 2; 552 uint i, j, k; 553 554 assert(comps >= 1); 555 assert(comps <= 4); 556 557 if ((datatype == DTYPE_UBYTE) && (comps == 4)) { 558 DECLARE_ROW_POINTERS(ubyte, 4); 559 560 for (i = j = 0, k = k0; i < (uint) dstWidth; 561 i++, j += colStride, k += colStride) { 562 FILTER_3D(0); 563 FILTER_3D(1); 564 FILTER_3D(2); 565 FILTER_3D(3); 566 } 567 } 568 else if ((datatype == DTYPE_UBYTE) && (comps == 3)) { 569 DECLARE_ROW_POINTERS(ubyte, 3); 570 571 for (i = j = 0, k = k0; i < (uint) dstWidth; 572 i++, j += colStride, k += colStride) { 573 FILTER_3D(0); 574 FILTER_3D(1); 575 FILTER_3D(2); 576 } 577 } 578 else if ((datatype == DTYPE_UBYTE) && (comps == 2)) { 579 DECLARE_ROW_POINTERS(ubyte, 2); 580 581 for (i = j = 0, k = k0; i < (uint) dstWidth; 582 i++, j += colStride, k += colStride) { 583 FILTER_3D(0); 584 FILTER_3D(1); 585 } 586 } 587 else if ((datatype == DTYPE_UBYTE) && (comps == 1)) { 588 DECLARE_ROW_POINTERS(ubyte, 1); 589 590 for (i = j = 0, k = k0; i < (uint) dstWidth; 591 i++, j += colStride, k += colStride) { 592 FILTER_3D(0); 593 } 594 } 595 else if ((datatype == DTYPE_USHORT) && (comps == 4)) { 596 DECLARE_ROW_POINTERS(ushort, 4); 597 598 for (i = j = 0, k = k0; i < (uint) dstWidth; 599 i++, j += colStride, k += colStride) { 600 FILTER_3D(0); 601 FILTER_3D(1); 602 FILTER_3D(2); 603 FILTER_3D(3); 604 } 605 } 606 else if ((datatype == DTYPE_USHORT) && (comps == 3)) { 607 DECLARE_ROW_POINTERS(ushort, 3); 608 609 for (i = j = 0, k = k0; i < (uint) dstWidth; 610 i++, j += colStride, k += colStride) { 611 FILTER_3D(0); 612 FILTER_3D(1); 613 FILTER_3D(2); 614 } 615 } 616 else if ((datatype == DTYPE_USHORT) && (comps == 2)) { 617 DECLARE_ROW_POINTERS(ushort, 2); 618 619 for (i = j = 0, k = k0; i < (uint) dstWidth; 620 i++, j += colStride, k += colStride) { 621 FILTER_3D(0); 622 FILTER_3D(1); 623 } 624 } 625 else if ((datatype == DTYPE_USHORT) && (comps == 1)) { 626 DECLARE_ROW_POINTERS(ushort, 1); 627 628 for (i = j = 0, k = k0; i < (uint) dstWidth; 629 i++, j += colStride, k += colStride) { 630 FILTER_3D(0); 631 } 632 } 633 else if ((datatype == DTYPE_FLOAT) && (comps == 4)) { 634 DECLARE_ROW_POINTERS(float, 4); 635 636 for (i = j = 0, k = k0; i < (uint) dstWidth; 637 i++, j += colStride, k += colStride) { 638 FILTER_F_3D(0); 639 FILTER_F_3D(1); 640 FILTER_F_3D(2); 641 FILTER_F_3D(3); 642 } 643 } 644 else if ((datatype == DTYPE_FLOAT) && (comps == 3)) { 645 DECLARE_ROW_POINTERS(float, 3); 646 647 for (i = j = 0, k = k0; i < (uint) dstWidth; 648 i++, j += colStride, k += colStride) { 649 FILTER_F_3D(0); 650 FILTER_F_3D(1); 651 FILTER_F_3D(2); 652 } 653 } 654 else if ((datatype == DTYPE_FLOAT) && (comps == 2)) { 655 DECLARE_ROW_POINTERS(float, 2); 656 657 for (i = j = 0, k = k0; i < (uint) dstWidth; 658 i++, j += colStride, k += colStride) { 659 FILTER_F_3D(0); 660 FILTER_F_3D(1); 661 } 662 } 663 else if ((datatype == DTYPE_FLOAT) && (comps == 1)) { 664 DECLARE_ROW_POINTERS(float, 1); 665 666 for (i = j = 0, k = k0; i < (uint) dstWidth; 667 i++, j += colStride, k += colStride) { 668 FILTER_F_3D(0); 669 } 670 } 671 else if ((datatype == DTYPE_HALF_FLOAT) && (comps == 4)) { 672 DECLARE_ROW_POINTERS(half_float, 4); 673 674 for (i = j = 0, k = k0; i < (uint) dstWidth; 675 i++, j += colStride, k += colStride) { 676 FILTER_HF_3D(0); 677 FILTER_HF_3D(1); 678 FILTER_HF_3D(2); 679 FILTER_HF_3D(3); 680 } 681 } 682 else if ((datatype == DTYPE_HALF_FLOAT) && (comps == 3)) { 683 DECLARE_ROW_POINTERS(half_float, 4); 684 685 for (i = j = 0, k = k0; i < (uint) dstWidth; 686 i++, j += colStride, k += colStride) { 687 FILTER_HF_3D(0); 688 FILTER_HF_3D(1); 689 FILTER_HF_3D(2); 690 } 691 } 692 else if ((datatype == DTYPE_HALF_FLOAT) && (comps == 2)) { 693 DECLARE_ROW_POINTERS(half_float, 4); 694 695 for (i = j = 0, k = k0; i < (uint) dstWidth; 696 i++, j += colStride, k += colStride) { 697 FILTER_HF_3D(0); 698 FILTER_HF_3D(1); 699 } 700 } 701 else if ((datatype == DTYPE_HALF_FLOAT) && (comps == 1)) { 702 DECLARE_ROW_POINTERS(half_float, 4); 703 704 for (i = j = 0, k = k0; i < (uint) dstWidth; 705 i++, j += colStride, k += colStride) { 706 FILTER_HF_3D(0); 707 } 708 } 709 else if ((datatype == DTYPE_UINT) && (comps == 1)) { 710 const uint *rowA = (const uint *) srcRowA; 711 const uint *rowB = (const uint *) srcRowB; 712 const uint *rowC = (const uint *) srcRowC; 713 const uint *rowD = (const uint *) srcRowD; 714 float *dst = (float *) dstRow; 715 716 for (i = j = 0, k = k0; i < (uint) dstWidth; 717 i++, j += colStride, k += colStride) { 718 const uint64_t tmp = (((uint64_t) rowA[j] + (uint64_t) rowA[k]) 719 + ((uint64_t) rowB[j] + (uint64_t) rowB[k]) 720 + ((uint64_t) rowC[j] + (uint64_t) rowC[k]) 721 + ((uint64_t) rowD[j] + (uint64_t) rowD[k])); 722 dst[i] = (float)((double) tmp * 0.125); 723 } 724 } 725 else if ((datatype == DTYPE_USHORT_5_6_5) && (comps == 3)) { 726 DECLARE_ROW_POINTERS0(ushort); 727 728 for (i = j = 0, k = k0; i < (uint) dstWidth; 729 i++, j += colStride, k += colStride) { 730 const int rowAr0 = rowA[j] & 0x1f; 731 const int rowAr1 = rowA[k] & 0x1f; 732 const int rowBr0 = rowB[j] & 0x1f; 733 const int rowBr1 = rowB[k] & 0x1f; 734 const int rowCr0 = rowC[j] & 0x1f; 735 const int rowCr1 = rowC[k] & 0x1f; 736 const int rowDr0 = rowD[j] & 0x1f; 737 const int rowDr1 = rowD[k] & 0x1f; 738 const int rowAg0 = (rowA[j] >> 5) & 0x3f; 739 const int rowAg1 = (rowA[k] >> 5) & 0x3f; 740 const int rowBg0 = (rowB[j] >> 5) & 0x3f; 741 const int rowBg1 = (rowB[k] >> 5) & 0x3f; 742 const int rowCg0 = (rowC[j] >> 5) & 0x3f; 743 const int rowCg1 = (rowC[k] >> 5) & 0x3f; 744 const int rowDg0 = (rowD[j] >> 5) & 0x3f; 745 const int rowDg1 = (rowD[k] >> 5) & 0x3f; 746 const int rowAb0 = (rowA[j] >> 11) & 0x1f; 747 const int rowAb1 = (rowA[k] >> 11) & 0x1f; 748 const int rowBb0 = (rowB[j] >> 11) & 0x1f; 749 const int rowBb1 = (rowB[k] >> 11) & 0x1f; 750 const int rowCb0 = (rowC[j] >> 11) & 0x1f; 751 const int rowCb1 = (rowC[k] >> 11) & 0x1f; 752 const int rowDb0 = (rowD[j] >> 11) & 0x1f; 753 const int rowDb1 = (rowD[k] >> 11) & 0x1f; 754 const int r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1, 755 rowCr0, rowCr1, rowDr0, rowDr1); 756 const int g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1, 757 rowCg0, rowCg1, rowDg0, rowDg1); 758 const int b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1, 759 rowCb0, rowCb1, rowDb0, rowDb1); 760 dst[i] = (b << 11) | (g << 5) | r; 761 } 762 } 763 else if ((datatype == DTYPE_USHORT_4_4_4_4) && (comps == 4)) { 764 DECLARE_ROW_POINTERS0(ushort); 765 766 for (i = j = 0, k = k0; i < (uint) dstWidth; 767 i++, j += colStride, k += colStride) { 768 const int rowAr0 = rowA[j] & 0xf; 769 const int rowAr1 = rowA[k] & 0xf; 770 const int rowBr0 = rowB[j] & 0xf; 771 const int rowBr1 = rowB[k] & 0xf; 772 const int rowCr0 = rowC[j] & 0xf; 773 const int rowCr1 = rowC[k] & 0xf; 774 const int rowDr0 = rowD[j] & 0xf; 775 const int rowDr1 = rowD[k] & 0xf; 776 const int rowAg0 = (rowA[j] >> 4) & 0xf; 777 const int rowAg1 = (rowA[k] >> 4) & 0xf; 778 const int rowBg0 = (rowB[j] >> 4) & 0xf; 779 const int rowBg1 = (rowB[k] >> 4) & 0xf; 780 const int rowCg0 = (rowC[j] >> 4) & 0xf; 781 const int rowCg1 = (rowC[k] >> 4) & 0xf; 782 const int rowDg0 = (rowD[j] >> 4) & 0xf; 783 const int rowDg1 = (rowD[k] >> 4) & 0xf; 784 const int rowAb0 = (rowA[j] >> 8) & 0xf; 785 const int rowAb1 = (rowA[k] >> 8) & 0xf; 786 const int rowBb0 = (rowB[j] >> 8) & 0xf; 787 const int rowBb1 = (rowB[k] >> 8) & 0xf; 788 const int rowCb0 = (rowC[j] >> 8) & 0xf; 789 const int rowCb1 = (rowC[k] >> 8) & 0xf; 790 const int rowDb0 = (rowD[j] >> 8) & 0xf; 791 const int rowDb1 = (rowD[k] >> 8) & 0xf; 792 const int rowAa0 = (rowA[j] >> 12) & 0xf; 793 const int rowAa1 = (rowA[k] >> 12) & 0xf; 794 const int rowBa0 = (rowB[j] >> 12) & 0xf; 795 const int rowBa1 = (rowB[k] >> 12) & 0xf; 796 const int rowCa0 = (rowC[j] >> 12) & 0xf; 797 const int rowCa1 = (rowC[k] >> 12) & 0xf; 798 const int rowDa0 = (rowD[j] >> 12) & 0xf; 799 const int rowDa1 = (rowD[k] >> 12) & 0xf; 800 const int r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1, 801 rowCr0, rowCr1, rowDr0, rowDr1); 802 const int g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1, 803 rowCg0, rowCg1, rowDg0, rowDg1); 804 const int b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1, 805 rowCb0, rowCb1, rowDb0, rowDb1); 806 const int a = FILTER_SUM_3D(rowAa0, rowAa1, rowBa0, rowBa1, 807 rowCa0, rowCa1, rowDa0, rowDa1); 808 809 dst[i] = (a << 12) | (b << 8) | (g << 4) | r; 810 } 811 } 812 else if ((datatype == DTYPE_USHORT_1_5_5_5_REV) && (comps == 4)) { 813 DECLARE_ROW_POINTERS0(ushort); 814 815 for (i = j = 0, k = k0; i < (uint) dstWidth; 816 i++, j += colStride, k += colStride) { 817 const int rowAr0 = rowA[j] & 0x1f; 818 const int rowAr1 = rowA[k] & 0x1f; 819 const int rowBr0 = rowB[j] & 0x1f; 820 const int rowBr1 = rowB[k] & 0x1f; 821 const int rowCr0 = rowC[j] & 0x1f; 822 const int rowCr1 = rowC[k] & 0x1f; 823 const int rowDr0 = rowD[j] & 0x1f; 824 const int rowDr1 = rowD[k] & 0x1f; 825 const int rowAg0 = (rowA[j] >> 5) & 0x1f; 826 const int rowAg1 = (rowA[k] >> 5) & 0x1f; 827 const int rowBg0 = (rowB[j] >> 5) & 0x1f; 828 const int rowBg1 = (rowB[k] >> 5) & 0x1f; 829 const int rowCg0 = (rowC[j] >> 5) & 0x1f; 830 const int rowCg1 = (rowC[k] >> 5) & 0x1f; 831 const int rowDg0 = (rowD[j] >> 5) & 0x1f; 832 const int rowDg1 = (rowD[k] >> 5) & 0x1f; 833 const int rowAb0 = (rowA[j] >> 10) & 0x1f; 834 const int rowAb1 = (rowA[k] >> 10) & 0x1f; 835 const int rowBb0 = (rowB[j] >> 10) & 0x1f; 836 const int rowBb1 = (rowB[k] >> 10) & 0x1f; 837 const int rowCb0 = (rowC[j] >> 10) & 0x1f; 838 const int rowCb1 = (rowC[k] >> 10) & 0x1f; 839 const int rowDb0 = (rowD[j] >> 10) & 0x1f; 840 const int rowDb1 = (rowD[k] >> 10) & 0x1f; 841 const int rowAa0 = (rowA[j] >> 15) & 0x1; 842 const int rowAa1 = (rowA[k] >> 15) & 0x1; 843 const int rowBa0 = (rowB[j] >> 15) & 0x1; 844 const int rowBa1 = (rowB[k] >> 15) & 0x1; 845 const int rowCa0 = (rowC[j] >> 15) & 0x1; 846 const int rowCa1 = (rowC[k] >> 15) & 0x1; 847 const int rowDa0 = (rowD[j] >> 15) & 0x1; 848 const int rowDa1 = (rowD[k] >> 15) & 0x1; 849 const int r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1, 850 rowCr0, rowCr1, rowDr0, rowDr1); 851 const int g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1, 852 rowCg0, rowCg1, rowDg0, rowDg1); 853 const int b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1, 854 rowCb0, rowCb1, rowDb0, rowDb1); 855 const int a = FILTER_SUM_3D(rowAa0, rowAa1, rowBa0, rowBa1, 856 rowCa0, rowCa1, rowDa0, rowDa1); 857 858 dst[i] = (a << 15) | (b << 10) | (g << 5) | r; 859 } 860 } 861 else if ((datatype == DTYPE_UBYTE_3_3_2) && (comps == 3)) { 862 DECLARE_ROW_POINTERS0(ushort); 863 864 for (i = j = 0, k = k0; i < (uint) dstWidth; 865 i++, j += colStride, k += colStride) { 866 const int rowAr0 = rowA[j] & 0x3; 867 const int rowAr1 = rowA[k] & 0x3; 868 const int rowBr0 = rowB[j] & 0x3; 869 const int rowBr1 = rowB[k] & 0x3; 870 const int rowCr0 = rowC[j] & 0x3; 871 const int rowCr1 = rowC[k] & 0x3; 872 const int rowDr0 = rowD[j] & 0x3; 873 const int rowDr1 = rowD[k] & 0x3; 874 const int rowAg0 = (rowA[j] >> 2) & 0x7; 875 const int rowAg1 = (rowA[k] >> 2) & 0x7; 876 const int rowBg0 = (rowB[j] >> 2) & 0x7; 877 const int rowBg1 = (rowB[k] >> 2) & 0x7; 878 const int rowCg0 = (rowC[j] >> 2) & 0x7; 879 const int rowCg1 = (rowC[k] >> 2) & 0x7; 880 const int rowDg0 = (rowD[j] >> 2) & 0x7; 881 const int rowDg1 = (rowD[k] >> 2) & 0x7; 882 const int rowAb0 = (rowA[j] >> 5) & 0x7; 883 const int rowAb1 = (rowA[k] >> 5) & 0x7; 884 const int rowBb0 = (rowB[j] >> 5) & 0x7; 885 const int rowBb1 = (rowB[k] >> 5) & 0x7; 886 const int rowCb0 = (rowC[j] >> 5) & 0x7; 887 const int rowCb1 = (rowC[k] >> 5) & 0x7; 888 const int rowDb0 = (rowD[j] >> 5) & 0x7; 889 const int rowDb1 = (rowD[k] >> 5) & 0x7; 890 const int r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1, 891 rowCr0, rowCr1, rowDr0, rowDr1); 892 const int g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1, 893 rowCg0, rowCg1, rowDg0, rowDg1); 894 const int b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1, 895 rowCb0, rowCb1, rowDb0, rowDb1); 896 dst[i] = (b << 5) | (g << 2) | r; 897 } 898 } 899 else { 900 debug_printf("bad format in do_row_3D()"); 901 } 902 } 903 904 905 906 static void 907 format_to_type_comps(enum pipe_format pformat, 908 enum dtype *datatype, uint *comps) 909 { 910 /* XXX I think this could be implemented in terms of the pf_*() functions */ 911 switch (pformat) { 912 case PIPE_FORMAT_B8G8R8A8_UNORM: 913 case PIPE_FORMAT_B8G8R8X8_UNORM: 914 case PIPE_FORMAT_A8R8G8B8_UNORM: 915 case PIPE_FORMAT_X8R8G8B8_UNORM: 916 case PIPE_FORMAT_A8B8G8R8_SRGB: 917 case PIPE_FORMAT_X8B8G8R8_SRGB: 918 case PIPE_FORMAT_B8G8R8A8_SRGB: 919 case PIPE_FORMAT_B8G8R8X8_SRGB: 920 case PIPE_FORMAT_A8R8G8B8_SRGB: 921 case PIPE_FORMAT_X8R8G8B8_SRGB: 922 case PIPE_FORMAT_R8G8B8_SRGB: 923 *datatype = DTYPE_UBYTE; 924 *comps = 4; 925 return; 926 case PIPE_FORMAT_B5G5R5X1_UNORM: 927 case PIPE_FORMAT_B5G5R5A1_UNORM: 928 *datatype = DTYPE_USHORT_1_5_5_5_REV; 929 *comps = 4; 930 return; 931 case PIPE_FORMAT_B4G4R4A4_UNORM: 932 *datatype = DTYPE_USHORT_4_4_4_4; 933 *comps = 4; 934 return; 935 case PIPE_FORMAT_B5G6R5_UNORM: 936 *datatype = DTYPE_USHORT_5_6_5; 937 *comps = 3; 938 return; 939 case PIPE_FORMAT_L8_UNORM: 940 case PIPE_FORMAT_L8_SRGB: 941 case PIPE_FORMAT_A8_UNORM: 942 case PIPE_FORMAT_I8_UNORM: 943 *datatype = DTYPE_UBYTE; 944 *comps = 1; 945 return; 946 case PIPE_FORMAT_L8A8_UNORM: 947 case PIPE_FORMAT_L8A8_SRGB: 948 *datatype = DTYPE_UBYTE; 949 *comps = 2; 950 return; 951 default: 952 assert(0); 953 *datatype = DTYPE_UBYTE; 954 *comps = 0; 955 break; 956 } 957 } 958 959 960 static void 961 reduce_1d(enum pipe_format pformat, 962 int srcWidth, const ubyte *srcPtr, 963 int dstWidth, ubyte *dstPtr) 964 { 965 enum dtype datatype; 966 uint comps; 967 968 format_to_type_comps(pformat, &datatype, &comps); 969 970 /* we just duplicate the input row, kind of hack, saves code */ 971 do_row(datatype, comps, 972 srcWidth, srcPtr, srcPtr, 973 dstWidth, dstPtr); 974 } 975 976 977 /** 978 * Strides are in bytes. If zero, it'll be computed as width * bpp. 979 */ 980 static void 981 reduce_2d(enum pipe_format pformat, 982 int srcWidth, int srcHeight, 983 int srcRowStride, const ubyte *srcPtr, 984 int dstWidth, int dstHeight, 985 int dstRowStride, ubyte *dstPtr) 986 { 987 enum dtype datatype; 988 uint comps; 989 const int bpt = util_format_get_blocksize(pformat); 990 const ubyte *srcA, *srcB; 991 ubyte *dst; 992 int row; 993 994 format_to_type_comps(pformat, &datatype, &comps); 995 996 if (!srcRowStride) 997 srcRowStride = bpt * srcWidth; 998 999 if (!dstRowStride) 1000 dstRowStride = bpt * dstWidth; 1001 1002 /* Compute src and dst pointers */ 1003 srcA = srcPtr; 1004 if (srcHeight > 1) 1005 srcB = srcA + srcRowStride; 1006 else 1007 srcB = srcA; 1008 dst = dstPtr; 1009 1010 for (row = 0; row < dstHeight; row++) { 1011 do_row(datatype, comps, 1012 srcWidth, srcA, srcB, 1013 dstWidth, dst); 1014 srcA += 2 * srcRowStride; 1015 srcB += 2 * srcRowStride; 1016 dst += dstRowStride; 1017 } 1018 } 1019 1020 1021 static void 1022 reduce_3d(enum pipe_format pformat, 1023 int srcWidth, int srcHeight, int srcDepth, 1024 int srcRowStride, int srcImageStride, const ubyte *srcPtr, 1025 int dstWidth, int dstHeight, int dstDepth, 1026 int dstRowStride, int dstImageStride, ubyte *dstPtr) 1027 { 1028 const int bpt = util_format_get_blocksize(pformat); 1029 int img, row; 1030 int srcImageOffset, srcRowOffset; 1031 enum dtype datatype; 1032 uint comps; 1033 1034 format_to_type_comps(pformat, &datatype, &comps); 1035 1036 /* XXX I think we should rather assert those strides */ 1037 if (!srcImageStride) 1038 srcImageStride = srcWidth * srcHeight * bpt; 1039 if (!dstImageStride) 1040 dstImageStride = dstWidth * dstHeight * bpt; 1041 1042 if (!srcRowStride) 1043 srcRowStride = srcWidth * bpt; 1044 if (!dstRowStride) 1045 dstRowStride = dstWidth * bpt; 1046 1047 /* Offset between adjacent src images to be averaged together */ 1048 srcImageOffset = (srcDepth == dstDepth) ? 0 : srcImageStride; 1049 1050 /* Offset between adjacent src rows to be averaged together */ 1051 srcRowOffset = (srcHeight == dstHeight) ? 0 : srcRowStride; 1052 1053 /* 1054 * Need to average together up to 8 src pixels for each dest pixel. 1055 * Break that down into 3 operations: 1056 * 1. take two rows from source image and average them together. 1057 * 2. take two rows from next source image and average them together. 1058 * 3. take the two averaged rows and average them for the final dst row. 1059 */ 1060 1061 /* 1062 printf("mip3d %d x %d x %d -> %d x %d x %d\n", 1063 srcWidth, srcHeight, srcDepth, dstWidth, dstHeight, dstDepth); 1064 */ 1065 1066 for (img = 0; img < dstDepth; img++) { 1067 /* first source image pointer */ 1068 const ubyte *imgSrcA = srcPtr 1069 + img * (srcImageStride + srcImageOffset); 1070 /* second source image pointer */ 1071 const ubyte *imgSrcB = imgSrcA + srcImageOffset; 1072 /* address of the dest image */ 1073 ubyte *imgDst = dstPtr + img * dstImageStride; 1074 1075 /* setup the four source row pointers and the dest row pointer */ 1076 const ubyte *srcImgARowA = imgSrcA; 1077 const ubyte *srcImgARowB = imgSrcA + srcRowOffset; 1078 const ubyte *srcImgBRowA = imgSrcB; 1079 const ubyte *srcImgBRowB = imgSrcB + srcRowOffset; 1080 ubyte *dstImgRow = imgDst; 1081 1082 for (row = 0; row < dstHeight; row++) { 1083 do_row_3D(datatype, comps, srcWidth, 1084 srcImgARowA, srcImgARowB, 1085 srcImgBRowA, srcImgBRowB, 1086 dstWidth, dstImgRow); 1087 1088 /* advance to next rows */ 1089 srcImgARowA += srcRowStride + srcRowOffset; 1090 srcImgARowB += srcRowStride + srcRowOffset; 1091 srcImgBRowA += srcRowStride + srcRowOffset; 1092 srcImgBRowB += srcRowStride + srcRowOffset; 1093 dstImgRow += dstImageStride; 1094 } 1095 } 1096 } 1097 1098 1099 1100 1101 static void 1102 make_1d_mipmap(struct gen_mipmap_state *ctx, 1103 struct pipe_resource *pt, 1104 uint layer, uint baseLevel, uint lastLevel) 1105 { 1106 struct pipe_context *pipe = ctx->pipe; 1107 uint dstLevel; 1108 1109 for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) { 1110 const uint srcLevel = dstLevel - 1; 1111 struct pipe_transfer *srcTrans, *dstTrans; 1112 void *srcMap, *dstMap; 1113 1114 srcTrans = pipe_get_transfer(pipe, pt, srcLevel, layer, 1115 PIPE_TRANSFER_READ, 0, 0, 1116 u_minify(pt->width0, srcLevel), 1117 u_minify(pt->height0, srcLevel)); 1118 dstTrans = pipe_get_transfer(pipe, pt, dstLevel, layer, 1119 PIPE_TRANSFER_WRITE, 0, 0, 1120 u_minify(pt->width0, dstLevel), 1121 u_minify(pt->height0, dstLevel)); 1122 1123 srcMap = (ubyte *) pipe->transfer_map(pipe, srcTrans); 1124 dstMap = (ubyte *) pipe->transfer_map(pipe, dstTrans); 1125 1126 reduce_1d(pt->format, 1127 srcTrans->box.width, srcMap, 1128 dstTrans->box.width, dstMap); 1129 1130 pipe->transfer_unmap(pipe, srcTrans); 1131 pipe->transfer_unmap(pipe, dstTrans); 1132 1133 pipe->transfer_destroy(pipe, srcTrans); 1134 pipe->transfer_destroy(pipe, dstTrans); 1135 } 1136 } 1137 1138 1139 static void 1140 make_2d_mipmap(struct gen_mipmap_state *ctx, 1141 struct pipe_resource *pt, 1142 uint layer, uint baseLevel, uint lastLevel) 1143 { 1144 struct pipe_context *pipe = ctx->pipe; 1145 uint dstLevel; 1146 1147 assert(util_format_get_blockwidth(pt->format) == 1); 1148 assert(util_format_get_blockheight(pt->format) == 1); 1149 1150 for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) { 1151 const uint srcLevel = dstLevel - 1; 1152 struct pipe_transfer *srcTrans, *dstTrans; 1153 ubyte *srcMap, *dstMap; 1154 1155 srcTrans = pipe_get_transfer(pipe, pt, srcLevel, layer, 1156 PIPE_TRANSFER_READ, 0, 0, 1157 u_minify(pt->width0, srcLevel), 1158 u_minify(pt->height0, srcLevel)); 1159 dstTrans = pipe_get_transfer(pipe, pt, dstLevel, layer, 1160 PIPE_TRANSFER_WRITE, 0, 0, 1161 u_minify(pt->width0, dstLevel), 1162 u_minify(pt->height0, dstLevel)); 1163 1164 srcMap = (ubyte *) pipe->transfer_map(pipe, srcTrans); 1165 dstMap = (ubyte *) pipe->transfer_map(pipe, dstTrans); 1166 1167 reduce_2d(pt->format, 1168 srcTrans->box.width, srcTrans->box.height, 1169 srcTrans->stride, srcMap, 1170 dstTrans->box.width, dstTrans->box.height, 1171 dstTrans->stride, dstMap); 1172 1173 pipe->transfer_unmap(pipe, srcTrans); 1174 pipe->transfer_unmap(pipe, dstTrans); 1175 1176 pipe->transfer_destroy(pipe, srcTrans); 1177 pipe->transfer_destroy(pipe, dstTrans); 1178 } 1179 } 1180 1181 1182 /* XXX looks a bit more like it could work now but need to test */ 1183 static void 1184 make_3d_mipmap(struct gen_mipmap_state *ctx, 1185 struct pipe_resource *pt, 1186 uint face, uint baseLevel, uint lastLevel) 1187 { 1188 struct pipe_context *pipe = ctx->pipe; 1189 uint dstLevel; 1190 struct pipe_box src_box, dst_box; 1191 1192 assert(util_format_get_blockwidth(pt->format) == 1); 1193 assert(util_format_get_blockheight(pt->format) == 1); 1194 1195 src_box.x = src_box.y = src_box.z = 0; 1196 dst_box.x = dst_box.y = dst_box.z = 0; 1197 1198 for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) { 1199 const uint srcLevel = dstLevel - 1; 1200 struct pipe_transfer *srcTrans, *dstTrans; 1201 ubyte *srcMap, *dstMap; 1202 struct pipe_box src_box, dst_box; 1203 src_box.width = u_minify(pt->width0, srcLevel); 1204 src_box.height = u_minify(pt->height0, srcLevel); 1205 src_box.depth = u_minify(pt->depth0, srcLevel); 1206 dst_box.width = u_minify(pt->width0, dstLevel); 1207 dst_box.height = u_minify(pt->height0, dstLevel); 1208 dst_box.depth = u_minify(pt->depth0, dstLevel); 1209 1210 srcTrans = pipe->get_transfer(pipe, pt, srcLevel, 1211 PIPE_TRANSFER_READ, 1212 &src_box); 1213 dstTrans = pipe->get_transfer(pipe, pt, dstLevel, 1214 PIPE_TRANSFER_WRITE, 1215 &dst_box); 1216 1217 srcMap = (ubyte *) pipe->transfer_map(pipe, srcTrans); 1218 dstMap = (ubyte *) pipe->transfer_map(pipe, dstTrans); 1219 1220 reduce_3d(pt->format, 1221 srcTrans->box.width, srcTrans->box.height, srcTrans->box.depth, 1222 srcTrans->stride, srcTrans->layer_stride, srcMap, 1223 dstTrans->box.width, dstTrans->box.height, dstTrans->box.depth, 1224 dstTrans->stride, dstTrans->layer_stride, dstMap); 1225 1226 pipe->transfer_unmap(pipe, srcTrans); 1227 pipe->transfer_unmap(pipe, dstTrans); 1228 1229 pipe->transfer_destroy(pipe, srcTrans); 1230 pipe->transfer_destroy(pipe, dstTrans); 1231 } 1232 } 1233 1234 1235 static void 1236 fallback_gen_mipmap(struct gen_mipmap_state *ctx, 1237 struct pipe_resource *pt, 1238 uint layer, uint baseLevel, uint lastLevel) 1239 { 1240 switch (pt->target) { 1241 case PIPE_TEXTURE_1D: 1242 make_1d_mipmap(ctx, pt, layer, baseLevel, lastLevel); 1243 break; 1244 case PIPE_TEXTURE_2D: 1245 case PIPE_TEXTURE_RECT: 1246 case PIPE_TEXTURE_CUBE: 1247 make_2d_mipmap(ctx, pt, layer, baseLevel, lastLevel); 1248 break; 1249 case PIPE_TEXTURE_3D: 1250 make_3d_mipmap(ctx, pt, layer, baseLevel, lastLevel); 1251 break; 1252 default: 1253 assert(0); 1254 } 1255 } 1256 1257 1258 /** 1259 * Create a mipmap generation context. 1260 * The idea is to create one of these and re-use it each time we need to 1261 * generate a mipmap. 1262 */ 1263 struct gen_mipmap_state * 1264 util_create_gen_mipmap(struct pipe_context *pipe, 1265 struct cso_context *cso) 1266 { 1267 struct gen_mipmap_state *ctx; 1268 uint i; 1269 1270 ctx = CALLOC_STRUCT(gen_mipmap_state); 1271 if (!ctx) 1272 return NULL; 1273 1274 ctx->pipe = pipe; 1275 ctx->cso = cso; 1276 1277 /* disabled blending/masking */ 1278 memset(&ctx->blend_keep_color, 0, sizeof(ctx->blend_keep_color)); 1279 memset(&ctx->blend_write_color, 0, sizeof(ctx->blend_write_color)); 1280 ctx->blend_write_color.rt[0].colormask = PIPE_MASK_RGBA; 1281 1282 /* no-op depth/stencil/alpha */ 1283 memset(&ctx->dsa_keep_depth, 0, sizeof(ctx->dsa_keep_depth)); 1284 memset(&ctx->dsa_write_depth, 0, sizeof(ctx->dsa_write_depth)); 1285 ctx->dsa_write_depth.depth.enabled = 1; 1286 ctx->dsa_write_depth.depth.func = PIPE_FUNC_ALWAYS; 1287 ctx->dsa_write_depth.depth.writemask = 1; 1288 1289 /* rasterizer */ 1290 memset(&ctx->rasterizer, 0, sizeof(ctx->rasterizer)); 1291 ctx->rasterizer.cull_face = PIPE_FACE_NONE; 1292 ctx->rasterizer.gl_rasterization_rules = 1; 1293 ctx->rasterizer.depth_clip = 1; 1294 1295 /* sampler state */ 1296 memset(&ctx->sampler, 0, sizeof(ctx->sampler)); 1297 ctx->sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE; 1298 ctx->sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE; 1299 ctx->sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE; 1300 ctx->sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST; 1301 ctx->sampler.normalized_coords = 1; 1302 1303 /* vertex elements state */ 1304 memset(&ctx->velem[0], 0, sizeof(ctx->velem[0]) * 2); 1305 for (i = 0; i < 2; i++) { 1306 ctx->velem[i].src_offset = i * 4 * sizeof(float); 1307 ctx->velem[i].instance_divisor = 0; 1308 ctx->velem[i].vertex_buffer_index = 0; 1309 ctx->velem[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; 1310 } 1311 1312 /* vertex data that doesn't change */ 1313 for (i = 0; i < 4; i++) { 1314 ctx->vertices[i][0][2] = 0.0f; /* z */ 1315 ctx->vertices[i][0][3] = 1.0f; /* w */ 1316 ctx->vertices[i][1][3] = 1.0f; /* q */ 1317 } 1318 1319 /* Note: the actual vertex buffer is allocated as needed below */ 1320 1321 return ctx; 1322 } 1323 1324 1325 /** 1326 * Helper function to set the fragment shaders. 1327 */ 1328 static INLINE void 1329 set_fragment_shader(struct gen_mipmap_state *ctx, uint type, 1330 boolean output_depth) 1331 { 1332 if (output_depth) { 1333 if (!ctx->fs_depth[type]) 1334 ctx->fs_depth[type] = 1335 util_make_fragment_tex_shader_writedepth(ctx->pipe, type, 1336 TGSI_INTERPOLATE_LINEAR); 1337 1338 cso_set_fragment_shader_handle(ctx->cso, ctx->fs_depth[type]); 1339 } 1340 else { 1341 if (!ctx->fs_color[type]) 1342 ctx->fs_color[type] = 1343 util_make_fragment_tex_shader(ctx->pipe, type, 1344 TGSI_INTERPOLATE_LINEAR); 1345 1346 cso_set_fragment_shader_handle(ctx->cso, ctx->fs_color[type]); 1347 } 1348 } 1349 1350 1351 /** 1352 * Helper function to set the vertex shader. 1353 */ 1354 static INLINE void 1355 set_vertex_shader(struct gen_mipmap_state *ctx) 1356 { 1357 /* vertex shader - still required to provide the linkage between 1358 * fragment shader input semantics and vertex_element/buffers. 1359 */ 1360 if (!ctx->vs) 1361 { 1362 const uint semantic_names[] = { TGSI_SEMANTIC_POSITION, 1363 TGSI_SEMANTIC_GENERIC }; 1364 const uint semantic_indexes[] = { 0, 0 }; 1365 ctx->vs = util_make_vertex_passthrough_shader(ctx->pipe, 2, 1366 semantic_names, 1367 semantic_indexes); 1368 } 1369 1370 cso_set_vertex_shader_handle(ctx->cso, ctx->vs); 1371 } 1372 1373 1374 /** 1375 * Get next "slot" of vertex space in the vertex buffer. 1376 * We're allocating one large vertex buffer and using it piece by piece. 1377 */ 1378 static unsigned 1379 get_next_slot(struct gen_mipmap_state *ctx) 1380 { 1381 const unsigned max_slots = 4096 / sizeof ctx->vertices; 1382 1383 if (ctx->vbuf_slot >= max_slots) { 1384 pipe_resource_reference(&ctx->vbuf, NULL); 1385 ctx->vbuf_slot = 0; 1386 } 1387 1388 if (!ctx->vbuf) { 1389 ctx->vbuf = pipe_buffer_create(ctx->pipe->screen, 1390 PIPE_BIND_VERTEX_BUFFER, 1391 PIPE_USAGE_STREAM, 1392 max_slots * sizeof ctx->vertices); 1393 } 1394 1395 return ctx->vbuf_slot++ * sizeof ctx->vertices; 1396 } 1397 1398 1399 static unsigned 1400 set_vertex_data(struct gen_mipmap_state *ctx, 1401 enum pipe_texture_target tex_target, 1402 uint layer, float r) 1403 { 1404 unsigned offset; 1405 1406 /* vert[0].position */ 1407 ctx->vertices[0][0][0] = -1.0f; /*x*/ 1408 ctx->vertices[0][0][1] = -1.0f; /*y*/ 1409 1410 /* vert[1].position */ 1411 ctx->vertices[1][0][0] = 1.0f; 1412 ctx->vertices[1][0][1] = -1.0f; 1413 1414 /* vert[2].position */ 1415 ctx->vertices[2][0][0] = 1.0f; 1416 ctx->vertices[2][0][1] = 1.0f; 1417 1418 /* vert[3].position */ 1419 ctx->vertices[3][0][0] = -1.0f; 1420 ctx->vertices[3][0][1] = 1.0f; 1421 1422 /* Setup vertex texcoords. This is a little tricky for cube maps. */ 1423 if (tex_target == PIPE_TEXTURE_CUBE) { 1424 static const float st[4][2] = { 1425 {0.0f, 0.0f}, {1.0f, 0.0f}, {1.0f, 1.0f}, {0.0f, 1.0f} 1426 }; 1427 1428 util_map_texcoords2d_onto_cubemap(layer, &st[0][0], 2, 1429 &ctx->vertices[0][1][0], 8); 1430 } 1431 else if (tex_target == PIPE_TEXTURE_1D_ARRAY) { 1432 /* 1D texture array */ 1433 ctx->vertices[0][1][0] = 0.0f; /*s*/ 1434 ctx->vertices[0][1][1] = r; /*t*/ 1435 ctx->vertices[0][1][2] = 0.0f; /*r*/ 1436 1437 ctx->vertices[1][1][0] = 1.0f; 1438 ctx->vertices[1][1][1] = r; 1439 ctx->vertices[1][1][2] = 0.0f; 1440 1441 ctx->vertices[2][1][0] = 1.0f; 1442 ctx->vertices[2][1][1] = r; 1443 ctx->vertices[2][1][2] = 0.0f; 1444 1445 ctx->vertices[3][1][0] = 0.0f; 1446 ctx->vertices[3][1][1] = r; 1447 ctx->vertices[3][1][2] = 0.0f; 1448 } else { 1449 /* 1D/2D/3D/2D array */ 1450 ctx->vertices[0][1][0] = 0.0f; /*s*/ 1451 ctx->vertices[0][1][1] = 0.0f; /*t*/ 1452 ctx->vertices[0][1][2] = r; /*r*/ 1453 1454 ctx->vertices[1][1][0] = 1.0f; 1455 ctx->vertices[1][1][1] = 0.0f; 1456 ctx->vertices[1][1][2] = r; 1457 1458 ctx->vertices[2][1][0] = 1.0f; 1459 ctx->vertices[2][1][1] = 1.0f; 1460 ctx->vertices[2][1][2] = r; 1461 1462 ctx->vertices[3][1][0] = 0.0f; 1463 ctx->vertices[3][1][1] = 1.0f; 1464 ctx->vertices[3][1][2] = r; 1465 } 1466 1467 offset = get_next_slot( ctx ); 1468 1469 pipe_buffer_write_nooverlap(ctx->pipe, ctx->vbuf, 1470 offset, sizeof(ctx->vertices), ctx->vertices); 1471 1472 return offset; 1473 } 1474 1475 1476 1477 /** 1478 * Destroy a mipmap generation context 1479 */ 1480 void 1481 util_destroy_gen_mipmap(struct gen_mipmap_state *ctx) 1482 { 1483 struct pipe_context *pipe = ctx->pipe; 1484 unsigned i; 1485 1486 for (i = 0; i < Elements(ctx->fs_color); i++) 1487 if (ctx->fs_color[i]) 1488 pipe->delete_fs_state(pipe, ctx->fs_color[i]); 1489 1490 for (i = 0; i < Elements(ctx->fs_depth); i++) 1491 if (ctx->fs_depth[i]) 1492 pipe->delete_fs_state(pipe, ctx->fs_depth[i]); 1493 1494 if (ctx->vs) 1495 pipe->delete_vs_state(pipe, ctx->vs); 1496 1497 pipe_resource_reference(&ctx->vbuf, NULL); 1498 1499 FREE(ctx); 1500 } 1501 1502 1503 /** 1504 * Generate mipmap images. It's assumed all needed texture memory is 1505 * already allocated. 1506 * 1507 * \param psv the sampler view to the texture to generate mipmap levels for 1508 * \param face which cube face to generate mipmaps for (0 for non-cube maps) 1509 * \param baseLevel the first mipmap level to use as a src 1510 * \param lastLevel the last mipmap level to generate 1511 * \param filter the minification filter used to generate mipmap levels with 1512 * \param filter one of PIPE_TEX_FILTER_LINEAR, PIPE_TEX_FILTER_NEAREST 1513 */ 1514 void 1515 util_gen_mipmap(struct gen_mipmap_state *ctx, 1516 struct pipe_sampler_view *psv, 1517 uint face, uint baseLevel, uint lastLevel, uint filter) 1518 { 1519 struct pipe_context *pipe = ctx->pipe; 1520 struct pipe_screen *screen = pipe->screen; 1521 struct pipe_framebuffer_state fb; 1522 struct pipe_resource *pt = psv->texture; 1523 uint dstLevel; 1524 uint offset; 1525 uint type; 1526 boolean is_depth = util_format_is_depth_or_stencil(psv->format); 1527 1528 /* The texture object should have room for the levels which we're 1529 * about to generate. 1530 */ 1531 assert(lastLevel <= pt->last_level); 1532 1533 /* If this fails, why are we here? */ 1534 assert(lastLevel > baseLevel); 1535 1536 assert(filter == PIPE_TEX_FILTER_LINEAR || 1537 filter == PIPE_TEX_FILTER_NEAREST); 1538 1539 switch (pt->target) { 1540 case PIPE_TEXTURE_1D: 1541 type = TGSI_TEXTURE_1D; 1542 break; 1543 case PIPE_TEXTURE_2D: 1544 type = TGSI_TEXTURE_2D; 1545 break; 1546 case PIPE_TEXTURE_3D: 1547 type = TGSI_TEXTURE_3D; 1548 break; 1549 case PIPE_TEXTURE_CUBE: 1550 type = TGSI_TEXTURE_CUBE; 1551 break; 1552 case PIPE_TEXTURE_1D_ARRAY: 1553 type = TGSI_TEXTURE_1D_ARRAY; 1554 break; 1555 case PIPE_TEXTURE_2D_ARRAY: 1556 type = TGSI_TEXTURE_2D_ARRAY; 1557 break; 1558 default: 1559 assert(0); 1560 type = TGSI_TEXTURE_2D; 1561 } 1562 1563 /* check if we can render in the texture's format */ 1564 if (!screen->is_format_supported(screen, psv->format, pt->target, 1565 pt->nr_samples, 1566 is_depth ? PIPE_BIND_DEPTH_STENCIL : 1567 PIPE_BIND_RENDER_TARGET)) { 1568 fallback_gen_mipmap(ctx, pt, face, baseLevel, lastLevel); 1569 return; 1570 } 1571 1572 /* save state (restored below) */ 1573 cso_save_blend(ctx->cso); 1574 cso_save_depth_stencil_alpha(ctx->cso); 1575 cso_save_rasterizer(ctx->cso); 1576 cso_save_sample_mask(ctx->cso); 1577 cso_save_samplers(ctx->cso, PIPE_SHADER_FRAGMENT); 1578 cso_save_sampler_views(ctx->cso, PIPE_SHADER_FRAGMENT); 1579 cso_save_stream_outputs(ctx->cso); 1580 cso_save_framebuffer(ctx->cso); 1581 cso_save_fragment_shader(ctx->cso); 1582 cso_save_vertex_shader(ctx->cso); 1583 cso_save_geometry_shader(ctx->cso); 1584 cso_save_viewport(ctx->cso); 1585 cso_save_vertex_elements(ctx->cso); 1586 cso_save_vertex_buffers(ctx->cso); 1587 1588 /* bind our state */ 1589 cso_set_blend(ctx->cso, is_depth ? &ctx->blend_keep_color : 1590 &ctx->blend_write_color); 1591 cso_set_depth_stencil_alpha(ctx->cso, is_depth ? &ctx->dsa_write_depth : 1592 &ctx->dsa_keep_depth); 1593 cso_set_rasterizer(ctx->cso, &ctx->rasterizer); 1594 cso_set_sample_mask(ctx->cso, ~0); 1595 cso_set_vertex_elements(ctx->cso, 2, ctx->velem); 1596 cso_set_stream_outputs(ctx->cso, 0, NULL, 0); 1597 1598 set_fragment_shader(ctx, type, is_depth); 1599 set_vertex_shader(ctx); 1600 cso_set_geometry_shader_handle(ctx->cso, NULL); 1601 1602 /* init framebuffer state */ 1603 memset(&fb, 0, sizeof(fb)); 1604 1605 /* set min/mag to same filter for faster sw speed */ 1606 ctx->sampler.mag_img_filter = filter; 1607 ctx->sampler.min_img_filter = filter; 1608 1609 for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) { 1610 const uint srcLevel = dstLevel - 1; 1611 struct pipe_viewport_state vp; 1612 unsigned nr_layers, layer, i; 1613 float rcoord = 0.0f; 1614 1615 if (pt->target == PIPE_TEXTURE_3D) 1616 nr_layers = u_minify(pt->depth0, dstLevel); 1617 else if (pt->target == PIPE_TEXTURE_2D_ARRAY || pt->target == PIPE_TEXTURE_1D_ARRAY) 1618 nr_layers = pt->array_size; 1619 else 1620 nr_layers = 1; 1621 1622 for (i = 0; i < nr_layers; i++) { 1623 struct pipe_surface *surf, surf_templ; 1624 if (pt->target == PIPE_TEXTURE_3D) { 1625 /* in theory with geom shaders and driver with full layer support 1626 could do that in one go. */ 1627 layer = i; 1628 /* XXX hmm really? */ 1629 rcoord = (float)layer / (float)nr_layers + 1.0f / (float)(nr_layers * 2); 1630 } else if (pt->target == PIPE_TEXTURE_2D_ARRAY || pt->target == PIPE_TEXTURE_1D_ARRAY) { 1631 layer = i; 1632 rcoord = (float)layer; 1633 } else 1634 layer = face; 1635 1636 memset(&surf_templ, 0, sizeof(surf_templ)); 1637 u_surface_default_template(&surf_templ, pt, 1638 is_depth ? PIPE_BIND_DEPTH_STENCIL : 1639 PIPE_BIND_RENDER_TARGET); 1640 surf_templ.u.tex.level = dstLevel; 1641 surf_templ.u.tex.first_layer = layer; 1642 surf_templ.u.tex.last_layer = layer; 1643 surf = pipe->create_surface(pipe, pt, &surf_templ); 1644 1645 /* 1646 * Setup framebuffer / dest surface 1647 */ 1648 if (is_depth) { 1649 fb.nr_cbufs = 0; 1650 fb.zsbuf = surf; 1651 } 1652 else { 1653 fb.nr_cbufs = 1; 1654 fb.cbufs[0] = surf; 1655 } 1656 fb.width = u_minify(pt->width0, dstLevel); 1657 fb.height = u_minify(pt->height0, dstLevel); 1658 cso_set_framebuffer(ctx->cso, &fb); 1659 1660 /* viewport */ 1661 vp.scale[0] = 0.5f * fb.width; 1662 vp.scale[1] = 0.5f * fb.height; 1663 vp.scale[2] = 1.0f; 1664 vp.scale[3] = 1.0f; 1665 vp.translate[0] = 0.5f * fb.width; 1666 vp.translate[1] = 0.5f * fb.height; 1667 vp.translate[2] = 0.0f; 1668 vp.translate[3] = 0.0f; 1669 cso_set_viewport(ctx->cso, &vp); 1670 1671 /* 1672 * Setup sampler state 1673 * Note: we should only have to set the min/max LOD clamps to ensure 1674 * we grab texels from the right mipmap level. But some hardware 1675 * has trouble with min clamping so we also set the lod_bias to 1676 * try to work around that. 1677 */ 1678 ctx->sampler.min_lod = ctx->sampler.max_lod = (float) srcLevel; 1679 ctx->sampler.lod_bias = (float) srcLevel; 1680 cso_single_sampler(ctx->cso, PIPE_SHADER_FRAGMENT, 0, &ctx->sampler); 1681 cso_single_sampler_done(ctx->cso, PIPE_SHADER_FRAGMENT); 1682 1683 cso_set_sampler_views(ctx->cso, PIPE_SHADER_FRAGMENT, 1, &psv); 1684 1685 /* quad coords in clip coords */ 1686 offset = set_vertex_data(ctx, 1687 pt->target, 1688 face, 1689 rcoord); 1690 1691 util_draw_vertex_buffer(ctx->pipe, 1692 ctx->cso, 1693 ctx->vbuf, 1694 offset, 1695 PIPE_PRIM_TRIANGLE_FAN, 1696 4, /* verts */ 1697 2); /* attribs/vert */ 1698 1699 /* need to signal that the texture has changed _after_ rendering to it */ 1700 pipe_surface_reference( &surf, NULL ); 1701 } 1702 } 1703 1704 /* restore state we changed */ 1705 cso_restore_blend(ctx->cso); 1706 cso_restore_depth_stencil_alpha(ctx->cso); 1707 cso_restore_rasterizer(ctx->cso); 1708 cso_restore_sample_mask(ctx->cso); 1709 cso_restore_samplers(ctx->cso, PIPE_SHADER_FRAGMENT); 1710 cso_restore_sampler_views(ctx->cso, PIPE_SHADER_FRAGMENT); 1711 cso_restore_framebuffer(ctx->cso); 1712 cso_restore_fragment_shader(ctx->cso); 1713 cso_restore_vertex_shader(ctx->cso); 1714 cso_restore_geometry_shader(ctx->cso); 1715 cso_restore_viewport(ctx->cso); 1716 cso_restore_vertex_elements(ctx->cso); 1717 cso_restore_stream_outputs(ctx->cso); 1718 cso_restore_vertex_buffers(ctx->cso); 1719 } 1720
