teximage.c revision ea9b212fca78eada7cc7c4449de3f31d2ceea1c3
1/* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. 5 * Copyright (C) 2009 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 "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included 15 * in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25 26/** 27 * \file teximage.c 28 * Texture image-related functions. 29 */ 30 31#include <stdbool.h> 32#include "glheader.h" 33#include "bufferobj.h" 34#include "context.h" 35#include "enums.h" 36#include "fbobject.h" 37#include "framebuffer.h" 38#include "hash.h" 39#include "image.h" 40#include "imports.h" 41#include "macros.h" 42#include "mfeatures.h" 43#include "state.h" 44#include "texcompress.h" 45#include "teximage.h" 46#include "texobj.h" 47#include "texstate.h" 48#include "texpal.h" 49#include "mtypes.h" 50#include "glformats.h" 51 52 53/** 54 * State changes which we care about for glCopyTex[Sub]Image() calls. 55 * In particular, we care about pixel transfer state and buffer state 56 * (such as glReadBuffer to make sure we read from the right renderbuffer). 57 */ 58#define NEW_COPY_TEX_STATE (_NEW_BUFFERS | _NEW_PIXEL) 59 60 61 62/** 63 * Return the simple base format for a given internal texture format. 64 * For example, given GL_LUMINANCE12_ALPHA4, return GL_LUMINANCE_ALPHA. 65 * 66 * \param ctx GL context. 67 * \param internalFormat the internal texture format token or 1, 2, 3, or 4. 68 * 69 * \return the corresponding \u base internal format (GL_ALPHA, GL_LUMINANCE, 70 * GL_LUMANCE_ALPHA, GL_INTENSITY, GL_RGB, or GL_RGBA), or -1 if invalid enum. 71 * 72 * This is the format which is used during texture application (i.e. the 73 * texture format and env mode determine the arithmetic used. 74 */ 75GLint 76_mesa_base_tex_format( struct gl_context *ctx, GLint internalFormat ) 77{ 78 switch (internalFormat) { 79 case GL_ALPHA: 80 case GL_ALPHA4: 81 case GL_ALPHA8: 82 case GL_ALPHA12: 83 case GL_ALPHA16: 84 return GL_ALPHA; 85 case 1: 86 case GL_LUMINANCE: 87 case GL_LUMINANCE4: 88 case GL_LUMINANCE8: 89 case GL_LUMINANCE12: 90 case GL_LUMINANCE16: 91 return GL_LUMINANCE; 92 case 2: 93 case GL_LUMINANCE_ALPHA: 94 case GL_LUMINANCE4_ALPHA4: 95 case GL_LUMINANCE6_ALPHA2: 96 case GL_LUMINANCE8_ALPHA8: 97 case GL_LUMINANCE12_ALPHA4: 98 case GL_LUMINANCE12_ALPHA12: 99 case GL_LUMINANCE16_ALPHA16: 100 return GL_LUMINANCE_ALPHA; 101 case GL_INTENSITY: 102 case GL_INTENSITY4: 103 case GL_INTENSITY8: 104 case GL_INTENSITY12: 105 case GL_INTENSITY16: 106 return GL_INTENSITY; 107 case 3: 108 case GL_RGB: 109 case GL_R3_G3_B2: 110 case GL_RGB4: 111 case GL_RGB5: 112 case GL_RGB8: 113 case GL_RGB10: 114 case GL_RGB12: 115 case GL_RGB16: 116 return GL_RGB; 117 case 4: 118 case GL_RGBA: 119 case GL_RGBA2: 120 case GL_RGBA4: 121 case GL_RGB5_A1: 122 case GL_RGBA8: 123 case GL_RGB10_A2: 124 case GL_RGBA12: 125 case GL_RGBA16: 126 return GL_RGBA; 127 default: 128 ; /* fallthrough */ 129 } 130 131 /* GL_BGRA can be an internal format *only* in OpenGL ES (1.x or 2.0). 132 */ 133 if (_mesa_is_gles(ctx)) { 134 switch (internalFormat) { 135 case GL_BGRA: 136 return GL_RGBA; 137 default: 138 ; /* fallthrough */ 139 } 140 } 141 142 if (ctx->Extensions.ARB_ES2_compatibility) { 143 switch (internalFormat) { 144 case GL_RGB565: 145 return GL_RGB; 146 default: 147 ; /* fallthrough */ 148 } 149 } 150 151 if (ctx->Extensions.ARB_depth_texture) { 152 switch (internalFormat) { 153 case GL_DEPTH_COMPONENT: 154 case GL_DEPTH_COMPONENT16: 155 case GL_DEPTH_COMPONENT24: 156 case GL_DEPTH_COMPONENT32: 157 return GL_DEPTH_COMPONENT; 158 default: 159 ; /* fallthrough */ 160 } 161 } 162 163 switch (internalFormat) { 164 case GL_COMPRESSED_ALPHA: 165 return GL_ALPHA; 166 case GL_COMPRESSED_LUMINANCE: 167 return GL_LUMINANCE; 168 case GL_COMPRESSED_LUMINANCE_ALPHA: 169 return GL_LUMINANCE_ALPHA; 170 case GL_COMPRESSED_INTENSITY: 171 return GL_INTENSITY; 172 case GL_COMPRESSED_RGB: 173 return GL_RGB; 174 case GL_COMPRESSED_RGBA: 175 return GL_RGBA; 176 default: 177 ; /* fallthrough */ 178 } 179 180 if (ctx->Extensions.TDFX_texture_compression_FXT1) { 181 switch (internalFormat) { 182 case GL_COMPRESSED_RGB_FXT1_3DFX: 183 return GL_RGB; 184 case GL_COMPRESSED_RGBA_FXT1_3DFX: 185 return GL_RGBA; 186 default: 187 ; /* fallthrough */ 188 } 189 } 190 191 if (ctx->Extensions.EXT_texture_compression_s3tc) { 192 switch (internalFormat) { 193 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: 194 return GL_RGB; 195 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: 196 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: 197 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: 198 return GL_RGBA; 199 default: 200 ; /* fallthrough */ 201 } 202 } 203 204 if (ctx->Extensions.S3_s3tc) { 205 switch (internalFormat) { 206 case GL_RGB_S3TC: 207 case GL_RGB4_S3TC: 208 return GL_RGB; 209 case GL_RGBA_S3TC: 210 case GL_RGBA4_S3TC: 211 return GL_RGBA; 212 default: 213 ; /* fallthrough */ 214 } 215 } 216 217 if (ctx->Extensions.MESA_ycbcr_texture) { 218 if (internalFormat == GL_YCBCR_MESA) 219 return GL_YCBCR_MESA; 220 } 221 222 if (ctx->Extensions.ARB_texture_float) { 223 switch (internalFormat) { 224 case GL_ALPHA16F_ARB: 225 case GL_ALPHA32F_ARB: 226 return GL_ALPHA; 227 case GL_RGBA16F_ARB: 228 case GL_RGBA32F_ARB: 229 return GL_RGBA; 230 case GL_RGB16F_ARB: 231 case GL_RGB32F_ARB: 232 return GL_RGB; 233 case GL_INTENSITY16F_ARB: 234 case GL_INTENSITY32F_ARB: 235 return GL_INTENSITY; 236 case GL_LUMINANCE16F_ARB: 237 case GL_LUMINANCE32F_ARB: 238 return GL_LUMINANCE; 239 case GL_LUMINANCE_ALPHA16F_ARB: 240 case GL_LUMINANCE_ALPHA32F_ARB: 241 return GL_LUMINANCE_ALPHA; 242 default: 243 ; /* fallthrough */ 244 } 245 } 246 247 if (ctx->Extensions.ATI_envmap_bumpmap) { 248 switch (internalFormat) { 249 case GL_DUDV_ATI: 250 case GL_DU8DV8_ATI: 251 return GL_DUDV_ATI; 252 default: 253 ; /* fallthrough */ 254 } 255 } 256 257 if (ctx->Extensions.EXT_texture_snorm) { 258 switch (internalFormat) { 259 case GL_RED_SNORM: 260 case GL_R8_SNORM: 261 case GL_R16_SNORM: 262 return GL_RED; 263 case GL_RG_SNORM: 264 case GL_RG8_SNORM: 265 case GL_RG16_SNORM: 266 return GL_RG; 267 case GL_RGB_SNORM: 268 case GL_RGB8_SNORM: 269 case GL_RGB16_SNORM: 270 return GL_RGB; 271 case GL_RGBA_SNORM: 272 case GL_RGBA8_SNORM: 273 case GL_RGBA16_SNORM: 274 return GL_RGBA; 275 case GL_ALPHA_SNORM: 276 case GL_ALPHA8_SNORM: 277 case GL_ALPHA16_SNORM: 278 return GL_ALPHA; 279 case GL_LUMINANCE_SNORM: 280 case GL_LUMINANCE8_SNORM: 281 case GL_LUMINANCE16_SNORM: 282 return GL_LUMINANCE; 283 case GL_LUMINANCE_ALPHA_SNORM: 284 case GL_LUMINANCE8_ALPHA8_SNORM: 285 case GL_LUMINANCE16_ALPHA16_SNORM: 286 return GL_LUMINANCE_ALPHA; 287 case GL_INTENSITY_SNORM: 288 case GL_INTENSITY8_SNORM: 289 case GL_INTENSITY16_SNORM: 290 return GL_INTENSITY; 291 default: 292 ; /* fallthrough */ 293 } 294 } 295 296 if (ctx->Extensions.EXT_packed_depth_stencil) { 297 switch (internalFormat) { 298 case GL_DEPTH_STENCIL_EXT: 299 case GL_DEPTH24_STENCIL8_EXT: 300 return GL_DEPTH_STENCIL_EXT; 301 default: 302 ; /* fallthrough */ 303 } 304 } 305 306#if FEATURE_EXT_texture_sRGB 307 if (ctx->Extensions.EXT_texture_sRGB) { 308 switch (internalFormat) { 309 case GL_SRGB_EXT: 310 case GL_SRGB8_EXT: 311 case GL_COMPRESSED_SRGB_EXT: 312 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT: 313 return GL_RGB; 314 case GL_SRGB_ALPHA_EXT: 315 case GL_SRGB8_ALPHA8_EXT: 316 case GL_COMPRESSED_SRGB_ALPHA_EXT: 317 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT: 318 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT: 319 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT: 320 return GL_RGBA; 321 case GL_SLUMINANCE_ALPHA_EXT: 322 case GL_SLUMINANCE8_ALPHA8_EXT: 323 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT: 324 return GL_LUMINANCE_ALPHA; 325 case GL_SLUMINANCE_EXT: 326 case GL_SLUMINANCE8_EXT: 327 case GL_COMPRESSED_SLUMINANCE_EXT: 328 return GL_LUMINANCE; 329 default: 330 ; /* fallthrough */ 331 } 332 } 333#endif /* FEATURE_EXT_texture_sRGB */ 334 335 if (ctx->Version >= 30 || 336 ctx->Extensions.EXT_texture_integer) { 337 switch (internalFormat) { 338 case GL_RGBA8UI_EXT: 339 case GL_RGBA16UI_EXT: 340 case GL_RGBA32UI_EXT: 341 case GL_RGBA8I_EXT: 342 case GL_RGBA16I_EXT: 343 case GL_RGBA32I_EXT: 344 case GL_RGB10_A2UI: 345 return GL_RGBA; 346 case GL_RGB8UI_EXT: 347 case GL_RGB16UI_EXT: 348 case GL_RGB32UI_EXT: 349 case GL_RGB8I_EXT: 350 case GL_RGB16I_EXT: 351 case GL_RGB32I_EXT: 352 return GL_RGB; 353 } 354 } 355 356 if (ctx->Extensions.EXT_texture_integer) { 357 switch (internalFormat) { 358 case GL_ALPHA8UI_EXT: 359 case GL_ALPHA16UI_EXT: 360 case GL_ALPHA32UI_EXT: 361 case GL_ALPHA8I_EXT: 362 case GL_ALPHA16I_EXT: 363 case GL_ALPHA32I_EXT: 364 return GL_ALPHA; 365 case GL_INTENSITY8UI_EXT: 366 case GL_INTENSITY16UI_EXT: 367 case GL_INTENSITY32UI_EXT: 368 case GL_INTENSITY8I_EXT: 369 case GL_INTENSITY16I_EXT: 370 case GL_INTENSITY32I_EXT: 371 return GL_INTENSITY; 372 case GL_LUMINANCE8UI_EXT: 373 case GL_LUMINANCE16UI_EXT: 374 case GL_LUMINANCE32UI_EXT: 375 case GL_LUMINANCE8I_EXT: 376 case GL_LUMINANCE16I_EXT: 377 case GL_LUMINANCE32I_EXT: 378 return GL_LUMINANCE; 379 case GL_LUMINANCE_ALPHA8UI_EXT: 380 case GL_LUMINANCE_ALPHA16UI_EXT: 381 case GL_LUMINANCE_ALPHA32UI_EXT: 382 case GL_LUMINANCE_ALPHA8I_EXT: 383 case GL_LUMINANCE_ALPHA16I_EXT: 384 case GL_LUMINANCE_ALPHA32I_EXT: 385 return GL_LUMINANCE_ALPHA; 386 default: 387 ; /* fallthrough */ 388 } 389 } 390 391 if (ctx->Extensions.ARB_texture_rg) { 392 switch (internalFormat) { 393 case GL_R16F: 394 /* R16F depends on both ARB_half_float_pixel and ARB_texture_float. 395 */ 396 if (!ctx->Extensions.ARB_half_float_pixel) 397 break; 398 /* FALLTHROUGH */ 399 case GL_R32F: 400 if (!ctx->Extensions.ARB_texture_float) 401 break; 402 return GL_RED; 403 case GL_R8I: 404 case GL_R8UI: 405 case GL_R16I: 406 case GL_R16UI: 407 case GL_R32I: 408 case GL_R32UI: 409 if (ctx->Version < 30 && !ctx->Extensions.EXT_texture_integer) 410 break; 411 /* FALLTHROUGH */ 412 case GL_R8: 413 case GL_R16: 414 case GL_RED: 415 case GL_COMPRESSED_RED: 416 return GL_RED; 417 418 case GL_RG16F: 419 /* RG16F depends on both ARB_half_float_pixel and ARB_texture_float. 420 */ 421 if (!ctx->Extensions.ARB_half_float_pixel) 422 break; 423 /* FALLTHROUGH */ 424 case GL_RG32F: 425 if (!ctx->Extensions.ARB_texture_float) 426 break; 427 return GL_RG; 428 case GL_RG8I: 429 case GL_RG8UI: 430 case GL_RG16I: 431 case GL_RG16UI: 432 case GL_RG32I: 433 case GL_RG32UI: 434 if (ctx->Version < 30 && !ctx->Extensions.EXT_texture_integer) 435 break; 436 /* FALLTHROUGH */ 437 case GL_RG: 438 case GL_RG8: 439 case GL_RG16: 440 case GL_COMPRESSED_RG: 441 return GL_RG; 442 default: 443 ; /* fallthrough */ 444 } 445 } 446 447 if (ctx->Extensions.EXT_texture_shared_exponent) { 448 switch (internalFormat) { 449 case GL_RGB9_E5_EXT: 450 return GL_RGB; 451 default: 452 ; /* fallthrough */ 453 } 454 } 455 456 if (ctx->Extensions.EXT_packed_float) { 457 switch (internalFormat) { 458 case GL_R11F_G11F_B10F_EXT: 459 return GL_RGB; 460 default: 461 ; /* fallthrough */ 462 } 463 } 464 465 if (ctx->Extensions.ARB_depth_buffer_float) { 466 switch (internalFormat) { 467 case GL_DEPTH_COMPONENT32F: 468 return GL_DEPTH_COMPONENT; 469 case GL_DEPTH32F_STENCIL8: 470 return GL_DEPTH_STENCIL; 471 default: 472 ; /* fallthrough */ 473 } 474 } 475 476 if (ctx->Extensions.ARB_texture_compression_rgtc) { 477 switch (internalFormat) { 478 case GL_COMPRESSED_RED_RGTC1: 479 case GL_COMPRESSED_SIGNED_RED_RGTC1: 480 return GL_RED; 481 case GL_COMPRESSED_RG_RGTC2: 482 case GL_COMPRESSED_SIGNED_RG_RGTC2: 483 return GL_RG; 484 default: 485 ; /* fallthrough */ 486 } 487 } 488 489 if (ctx->Extensions.EXT_texture_compression_latc) { 490 switch (internalFormat) { 491 case GL_COMPRESSED_LUMINANCE_LATC1_EXT: 492 case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT: 493 return GL_LUMINANCE; 494 case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT: 495 case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT: 496 return GL_LUMINANCE_ALPHA; 497 default: 498 ; /* fallthrough */ 499 } 500 } 501 502 if (ctx->Extensions.ATI_texture_compression_3dc) { 503 switch (internalFormat) { 504 case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI: 505 return GL_LUMINANCE_ALPHA; 506 default: 507 ; /* fallthrough */ 508 } 509 } 510 511 if (ctx->Extensions.OES_compressed_ETC1_RGB8_texture) { 512 switch (internalFormat) { 513 case GL_ETC1_RGB8_OES: 514 return GL_RGB; 515 default: 516 ; /* fallthrough */ 517 } 518 } 519 520 if (ctx->API == API_OPENGLES) { 521 switch (internalFormat) { 522 case GL_PALETTE4_RGB8_OES: 523 case GL_PALETTE4_R5_G6_B5_OES: 524 case GL_PALETTE8_RGB8_OES: 525 case GL_PALETTE8_R5_G6_B5_OES: 526 return GL_RGB; 527 case GL_PALETTE4_RGBA8_OES: 528 case GL_PALETTE8_RGB5_A1_OES: 529 case GL_PALETTE4_RGBA4_OES: 530 case GL_PALETTE4_RGB5_A1_OES: 531 case GL_PALETTE8_RGBA8_OES: 532 case GL_PALETTE8_RGBA4_OES: 533 return GL_RGBA; 534 default: 535 ; /* fallthrough */ 536 } 537 } 538 539 return -1; /* error */ 540} 541 542 543/** 544 * For cube map faces, return a face index in [0,5]. 545 * For other targets return 0; 546 */ 547GLuint 548_mesa_tex_target_to_face(GLenum target) 549{ 550 if (_mesa_is_cube_face(target)) 551 return (GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X; 552 else 553 return 0; 554} 555 556 557 558/** 559 * Install gl_texture_image in a gl_texture_object according to the target 560 * and level parameters. 561 * 562 * \param tObj texture object. 563 * \param target texture target. 564 * \param level image level. 565 * \param texImage texture image. 566 */ 567static void 568set_tex_image(struct gl_texture_object *tObj, 569 GLenum target, GLint level, 570 struct gl_texture_image *texImage) 571{ 572 const GLuint face = _mesa_tex_target_to_face(target); 573 574 ASSERT(tObj); 575 ASSERT(texImage); 576 if (target == GL_TEXTURE_RECTANGLE_NV || target == GL_TEXTURE_EXTERNAL_OES) 577 assert(level == 0); 578 579 tObj->Image[face][level] = texImage; 580 581 /* Set the 'back' pointer */ 582 texImage->TexObject = tObj; 583 texImage->Level = level; 584 texImage->Face = face; 585} 586 587 588/** 589 * Allocate a texture image structure. 590 * 591 * Called via ctx->Driver.NewTextureImage() unless overriden by a device 592 * driver. 593 * 594 * \return a pointer to gl_texture_image struct with all fields initialized to 595 * zero. 596 */ 597struct gl_texture_image * 598_mesa_new_texture_image( struct gl_context *ctx ) 599{ 600 (void) ctx; 601 return CALLOC_STRUCT(gl_texture_image); 602} 603 604 605/** 606 * Free a gl_texture_image and associated data. 607 * This function is a fallback called via ctx->Driver.DeleteTextureImage(). 608 * 609 * \param texImage texture image. 610 * 611 * Free the texture image structure and the associated image data. 612 */ 613void 614_mesa_delete_texture_image(struct gl_context *ctx, 615 struct gl_texture_image *texImage) 616{ 617 /* Free texImage->Data and/or any other driver-specific texture 618 * image storage. 619 */ 620 ASSERT(ctx->Driver.FreeTextureImageBuffer); 621 ctx->Driver.FreeTextureImageBuffer( ctx, texImage ); 622 free(texImage); 623} 624 625 626/** 627 * Test if a target is a proxy target. 628 * 629 * \param target texture target. 630 * 631 * \return GL_TRUE if the target is a proxy target, GL_FALSE otherwise. 632 */ 633GLboolean 634_mesa_is_proxy_texture(GLenum target) 635{ 636 /* 637 * NUM_TEXTURE_TARGETS should match number of terms below, except there's no 638 * proxy for GL_TEXTURE_BUFFER and GL_TEXTURE_EXTERNAL_OES. 639 */ 640 assert(NUM_TEXTURE_TARGETS == 7 + 2); 641 642 return (target == GL_PROXY_TEXTURE_1D || 643 target == GL_PROXY_TEXTURE_2D || 644 target == GL_PROXY_TEXTURE_3D || 645 target == GL_PROXY_TEXTURE_CUBE_MAP_ARB || 646 target == GL_PROXY_TEXTURE_RECTANGLE_NV || 647 target == GL_PROXY_TEXTURE_1D_ARRAY_EXT || 648 target == GL_PROXY_TEXTURE_2D_ARRAY_EXT); 649} 650 651 652/** 653 * Return the proxy target which corresponds to the given texture target 654 */ 655static GLenum 656get_proxy_target(GLenum target) 657{ 658 switch (target) { 659 case GL_TEXTURE_1D: 660 case GL_PROXY_TEXTURE_1D: 661 return GL_PROXY_TEXTURE_1D; 662 case GL_TEXTURE_2D: 663 case GL_PROXY_TEXTURE_2D: 664 return GL_PROXY_TEXTURE_2D; 665 case GL_TEXTURE_3D: 666 case GL_PROXY_TEXTURE_3D: 667 return GL_PROXY_TEXTURE_3D; 668 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: 669 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: 670 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: 671 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: 672 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: 673 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: 674 case GL_TEXTURE_CUBE_MAP_ARB: 675 case GL_PROXY_TEXTURE_CUBE_MAP_ARB: 676 return GL_PROXY_TEXTURE_CUBE_MAP_ARB; 677 case GL_TEXTURE_RECTANGLE_NV: 678 case GL_PROXY_TEXTURE_RECTANGLE_NV: 679 return GL_PROXY_TEXTURE_RECTANGLE_NV; 680 case GL_TEXTURE_1D_ARRAY_EXT: 681 case GL_PROXY_TEXTURE_1D_ARRAY_EXT: 682 return GL_PROXY_TEXTURE_1D_ARRAY_EXT; 683 case GL_TEXTURE_2D_ARRAY_EXT: 684 case GL_PROXY_TEXTURE_2D_ARRAY_EXT: 685 return GL_PROXY_TEXTURE_2D_ARRAY_EXT; 686 default: 687 _mesa_problem(NULL, "unexpected target in get_proxy_target()"); 688 return 0; 689 } 690} 691 692 693/** 694 * Get the texture object that corresponds to the target of the given 695 * texture unit. The target should have already been checked for validity. 696 * 697 * \param ctx GL context. 698 * \param texUnit texture unit. 699 * \param target texture target. 700 * 701 * \return pointer to the texture object on success, or NULL on failure. 702 */ 703struct gl_texture_object * 704_mesa_select_tex_object(struct gl_context *ctx, 705 const struct gl_texture_unit *texUnit, 706 GLenum target) 707{ 708 const GLboolean arrayTex = (ctx->Extensions.MESA_texture_array || 709 ctx->Extensions.EXT_texture_array); 710 711 switch (target) { 712 case GL_TEXTURE_1D: 713 return texUnit->CurrentTex[TEXTURE_1D_INDEX]; 714 case GL_PROXY_TEXTURE_1D: 715 return ctx->Texture.ProxyTex[TEXTURE_1D_INDEX]; 716 case GL_TEXTURE_2D: 717 return texUnit->CurrentTex[TEXTURE_2D_INDEX]; 718 case GL_PROXY_TEXTURE_2D: 719 return ctx->Texture.ProxyTex[TEXTURE_2D_INDEX]; 720 case GL_TEXTURE_3D: 721 return texUnit->CurrentTex[TEXTURE_3D_INDEX]; 722 case GL_PROXY_TEXTURE_3D: 723 return ctx->Texture.ProxyTex[TEXTURE_3D_INDEX]; 724 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: 725 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: 726 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: 727 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: 728 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: 729 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: 730 case GL_TEXTURE_CUBE_MAP_ARB: 731 return ctx->Extensions.ARB_texture_cube_map 732 ? texUnit->CurrentTex[TEXTURE_CUBE_INDEX] : NULL; 733 case GL_PROXY_TEXTURE_CUBE_MAP_ARB: 734 return ctx->Extensions.ARB_texture_cube_map 735 ? ctx->Texture.ProxyTex[TEXTURE_CUBE_INDEX] : NULL; 736 case GL_TEXTURE_RECTANGLE_NV: 737 return ctx->Extensions.NV_texture_rectangle 738 ? texUnit->CurrentTex[TEXTURE_RECT_INDEX] : NULL; 739 case GL_PROXY_TEXTURE_RECTANGLE_NV: 740 return ctx->Extensions.NV_texture_rectangle 741 ? ctx->Texture.ProxyTex[TEXTURE_RECT_INDEX] : NULL; 742 case GL_TEXTURE_1D_ARRAY_EXT: 743 return arrayTex ? texUnit->CurrentTex[TEXTURE_1D_ARRAY_INDEX] : NULL; 744 case GL_PROXY_TEXTURE_1D_ARRAY_EXT: 745 return arrayTex ? ctx->Texture.ProxyTex[TEXTURE_1D_ARRAY_INDEX] : NULL; 746 case GL_TEXTURE_2D_ARRAY_EXT: 747 return arrayTex ? texUnit->CurrentTex[TEXTURE_2D_ARRAY_INDEX] : NULL; 748 case GL_PROXY_TEXTURE_2D_ARRAY_EXT: 749 return arrayTex ? ctx->Texture.ProxyTex[TEXTURE_2D_ARRAY_INDEX] : NULL; 750 case GL_TEXTURE_BUFFER: 751 return ctx->Extensions.ARB_texture_buffer_object 752 ? texUnit->CurrentTex[TEXTURE_BUFFER_INDEX] : NULL; 753 case GL_TEXTURE_EXTERNAL_OES: 754 return ctx->Extensions.OES_EGL_image_external 755 ? texUnit->CurrentTex[TEXTURE_EXTERNAL_INDEX] : NULL; 756 default: 757 _mesa_problem(NULL, "bad target in _mesa_select_tex_object()"); 758 return NULL; 759 } 760} 761 762 763/** 764 * Return pointer to texture object for given target on current texture unit. 765 */ 766struct gl_texture_object * 767_mesa_get_current_tex_object(struct gl_context *ctx, GLenum target) 768{ 769 struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx); 770 return _mesa_select_tex_object(ctx, texUnit, target); 771} 772 773 774/** 775 * Get a texture image pointer from a texture object, given a texture 776 * target and mipmap level. The target and level parameters should 777 * have already been error-checked. 778 * 779 * \param ctx GL context. 780 * \param texObj texture unit. 781 * \param target texture target. 782 * \param level image level. 783 * 784 * \return pointer to the texture image structure, or NULL on failure. 785 */ 786struct gl_texture_image * 787_mesa_select_tex_image(struct gl_context *ctx, 788 const struct gl_texture_object *texObj, 789 GLenum target, GLint level) 790{ 791 const GLuint face = _mesa_tex_target_to_face(target); 792 793 ASSERT(texObj); 794 ASSERT(level >= 0); 795 ASSERT(level < MAX_TEXTURE_LEVELS); 796 797 return texObj->Image[face][level]; 798} 799 800 801/** 802 * Like _mesa_select_tex_image() but if the image doesn't exist, allocate 803 * it and install it. Only return NULL if passed a bad parameter or run 804 * out of memory. 805 */ 806struct gl_texture_image * 807_mesa_get_tex_image(struct gl_context *ctx, struct gl_texture_object *texObj, 808 GLenum target, GLint level) 809{ 810 struct gl_texture_image *texImage; 811 812 if (!texObj) 813 return NULL; 814 815 texImage = _mesa_select_tex_image(ctx, texObj, target, level); 816 if (!texImage) { 817 texImage = ctx->Driver.NewTextureImage(ctx); 818 if (!texImage) { 819 _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture image allocation"); 820 return NULL; 821 } 822 823 set_tex_image(texObj, target, level, texImage); 824 } 825 826 return texImage; 827} 828 829 830/** 831 * Return pointer to the specified proxy texture image. 832 * Note that proxy textures are per-context, not per-texture unit. 833 * \return pointer to texture image or NULL if invalid target, invalid 834 * level, or out of memory. 835 */ 836struct gl_texture_image * 837_mesa_get_proxy_tex_image(struct gl_context *ctx, GLenum target, GLint level) 838{ 839 struct gl_texture_image *texImage; 840 GLuint texIndex; 841 842 if (level < 0) 843 return NULL; 844 845 switch (target) { 846 case GL_PROXY_TEXTURE_1D: 847 if (level >= ctx->Const.MaxTextureLevels) 848 return NULL; 849 texIndex = TEXTURE_1D_INDEX; 850 break; 851 case GL_PROXY_TEXTURE_2D: 852 if (level >= ctx->Const.MaxTextureLevels) 853 return NULL; 854 texIndex = TEXTURE_2D_INDEX; 855 break; 856 case GL_PROXY_TEXTURE_3D: 857 if (level >= ctx->Const.Max3DTextureLevels) 858 return NULL; 859 texIndex = TEXTURE_3D_INDEX; 860 break; 861 case GL_PROXY_TEXTURE_CUBE_MAP: 862 if (level >= ctx->Const.MaxCubeTextureLevels) 863 return NULL; 864 texIndex = TEXTURE_CUBE_INDEX; 865 break; 866 case GL_PROXY_TEXTURE_RECTANGLE_NV: 867 if (level > 0) 868 return NULL; 869 texIndex = TEXTURE_RECT_INDEX; 870 break; 871 case GL_PROXY_TEXTURE_1D_ARRAY_EXT: 872 if (level >= ctx->Const.MaxTextureLevels) 873 return NULL; 874 texIndex = TEXTURE_1D_ARRAY_INDEX; 875 break; 876 case GL_PROXY_TEXTURE_2D_ARRAY_EXT: 877 if (level >= ctx->Const.MaxTextureLevels) 878 return NULL; 879 texIndex = TEXTURE_2D_ARRAY_INDEX; 880 break; 881 default: 882 return NULL; 883 } 884 885 texImage = ctx->Texture.ProxyTex[texIndex]->Image[0][level]; 886 if (!texImage) { 887 texImage = ctx->Driver.NewTextureImage(ctx); 888 if (!texImage) { 889 _mesa_error(ctx, GL_OUT_OF_MEMORY, "proxy texture allocation"); 890 return NULL; 891 } 892 ctx->Texture.ProxyTex[texIndex]->Image[0][level] = texImage; 893 /* Set the 'back' pointer */ 894 texImage->TexObject = ctx->Texture.ProxyTex[texIndex]; 895 } 896 return texImage; 897} 898 899 900/** 901 * Get the maximum number of allowed mipmap levels. 902 * 903 * \param ctx GL context. 904 * \param target texture target. 905 * 906 * \return the maximum number of allowed mipmap levels for the given 907 * texture target, or zero if passed a bad target. 908 * 909 * \sa gl_constants. 910 */ 911GLint 912_mesa_max_texture_levels(struct gl_context *ctx, GLenum target) 913{ 914 switch (target) { 915 case GL_TEXTURE_1D: 916 case GL_PROXY_TEXTURE_1D: 917 case GL_TEXTURE_2D: 918 case GL_PROXY_TEXTURE_2D: 919 return ctx->Const.MaxTextureLevels; 920 case GL_TEXTURE_3D: 921 case GL_PROXY_TEXTURE_3D: 922 return ctx->Const.Max3DTextureLevels; 923 case GL_TEXTURE_CUBE_MAP: 924 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: 925 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: 926 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: 927 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: 928 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: 929 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: 930 case GL_PROXY_TEXTURE_CUBE_MAP_ARB: 931 return ctx->Extensions.ARB_texture_cube_map 932 ? ctx->Const.MaxCubeTextureLevels : 0; 933 case GL_TEXTURE_RECTANGLE_NV: 934 case GL_PROXY_TEXTURE_RECTANGLE_NV: 935 return ctx->Extensions.NV_texture_rectangle ? 1 : 0; 936 case GL_TEXTURE_1D_ARRAY_EXT: 937 case GL_PROXY_TEXTURE_1D_ARRAY_EXT: 938 case GL_TEXTURE_2D_ARRAY_EXT: 939 case GL_PROXY_TEXTURE_2D_ARRAY_EXT: 940 return (ctx->Extensions.MESA_texture_array || 941 ctx->Extensions.EXT_texture_array) 942 ? ctx->Const.MaxTextureLevels : 0; 943 case GL_TEXTURE_BUFFER: 944 return _mesa_is_desktop_gl(ctx) && 945 (ctx->Extensions.ARB_texture_buffer_object || 946 (ctx->Version >= 31)) ? 1 : 0; 947 case GL_TEXTURE_EXTERNAL_OES: 948 /* fall-through */ 949 default: 950 return 0; /* bad target */ 951 } 952} 953 954 955/** 956 * Return number of dimensions per mipmap level for the given texture target. 957 */ 958GLint 959_mesa_get_texture_dimensions(GLenum target) 960{ 961 switch (target) { 962 case GL_TEXTURE_1D: 963 case GL_PROXY_TEXTURE_1D: 964 return 1; 965 case GL_TEXTURE_2D: 966 case GL_TEXTURE_RECTANGLE: 967 case GL_TEXTURE_CUBE_MAP: 968 case GL_PROXY_TEXTURE_2D: 969 case GL_PROXY_TEXTURE_RECTANGLE: 970 case GL_PROXY_TEXTURE_CUBE_MAP: 971 case GL_TEXTURE_CUBE_MAP_POSITIVE_X: 972 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: 973 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: 974 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: 975 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: 976 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: 977 case GL_TEXTURE_1D_ARRAY: 978 case GL_PROXY_TEXTURE_1D_ARRAY: 979 case GL_TEXTURE_EXTERNAL_OES: 980 return 2; 981 case GL_TEXTURE_3D: 982 case GL_PROXY_TEXTURE_3D: 983 case GL_TEXTURE_2D_ARRAY: 984 case GL_PROXY_TEXTURE_2D_ARRAY: 985 return 3; 986 case GL_TEXTURE_BUFFER: 987 /* fall-through */ 988 default: 989 _mesa_problem(NULL, "invalid target 0x%x in get_texture_dimensions()", 990 target); 991 return 2; 992 } 993} 994 995 996 997 998#if 000 /* not used anymore */ 999/* 1000 * glTexImage[123]D can accept a NULL image pointer. In this case we 1001 * create a texture image with unspecified image contents per the OpenGL 1002 * spec. 1003 */ 1004static GLubyte * 1005make_null_texture(GLint width, GLint height, GLint depth, GLenum format) 1006{ 1007 const GLint components = _mesa_components_in_format(format); 1008 const GLint numPixels = width * height * depth; 1009 GLubyte *data = (GLubyte *) MALLOC(numPixels * components * sizeof(GLubyte)); 1010 1011#ifdef DEBUG 1012 /* 1013 * Let's see if anyone finds this. If glTexImage2D() is called with 1014 * a NULL image pointer then load the texture image with something 1015 * interesting instead of leaving it indeterminate. 1016 */ 1017 if (data) { 1018 static const char message[8][32] = { 1019 " X X XXXXX XXX X ", 1020 " XX XX X X X X X ", 1021 " X X X X X X X ", 1022 " X X XXXX XXX XXXXX ", 1023 " X X X X X X ", 1024 " X X X X X X X ", 1025 " X X XXXXX XXX X X ", 1026 " " 1027 }; 1028 1029 GLubyte *imgPtr = data; 1030 GLint h, i, j, k; 1031 for (h = 0; h < depth; h++) { 1032 for (i = 0; i < height; i++) { 1033 GLint srcRow = 7 - (i % 8); 1034 for (j = 0; j < width; j++) { 1035 GLint srcCol = j % 32; 1036 GLubyte texel = (message[srcRow][srcCol]=='X') ? 255 : 70; 1037 for (k = 0; k < components; k++) { 1038 *imgPtr++ = texel; 1039 } 1040 } 1041 } 1042 } 1043 } 1044#endif 1045 1046 return data; 1047} 1048#endif 1049 1050 1051 1052/** 1053 * Set the size and format-related fields of a gl_texture_image struct 1054 * to zero. This is used when a proxy texture test fails. 1055 */ 1056static void 1057clear_teximage_fields(struct gl_texture_image *img) 1058{ 1059 ASSERT(img); 1060 img->_BaseFormat = 0; 1061 img->InternalFormat = 0; 1062 img->Border = 0; 1063 img->Width = 0; 1064 img->Height = 0; 1065 img->Depth = 0; 1066 img->Width2 = 0; 1067 img->Height2 = 0; 1068 img->Depth2 = 0; 1069 img->WidthLog2 = 0; 1070 img->HeightLog2 = 0; 1071 img->DepthLog2 = 0; 1072 img->TexFormat = MESA_FORMAT_NONE; 1073} 1074 1075 1076/** 1077 * Initialize basic fields of the gl_texture_image struct. 1078 * 1079 * \param ctx GL context. 1080 * \param img texture image structure to be initialized. 1081 * \param width image width. 1082 * \param height image height. 1083 * \param depth image depth. 1084 * \param border image border. 1085 * \param internalFormat internal format. 1086 * \param format the actual hardware format (one of MESA_FORMAT_*) 1087 * 1088 * Fills in the fields of \p img with the given information. 1089 * Note: width, height and depth include the border. 1090 */ 1091void 1092_mesa_init_teximage_fields(struct gl_context *ctx, 1093 struct gl_texture_image *img, 1094 GLsizei width, GLsizei height, GLsizei depth, 1095 GLint border, GLenum internalFormat, 1096 gl_format format) 1097{ 1098 GLenum target; 1099 ASSERT(img); 1100 ASSERT(width >= 0); 1101 ASSERT(height >= 0); 1102 ASSERT(depth >= 0); 1103 1104 target = img->TexObject->Target; 1105 img->_BaseFormat = _mesa_base_tex_format( ctx, internalFormat ); 1106 ASSERT(img->_BaseFormat > 0); 1107 img->InternalFormat = internalFormat; 1108 img->Border = border; 1109 img->Width = width; 1110 img->Height = height; 1111 img->Depth = depth; 1112 1113 img->Width2 = width - 2 * border; /* == 1 << img->WidthLog2; */ 1114 img->WidthLog2 = _mesa_logbase2(img->Width2); 1115 1116 switch(target) { 1117 case GL_TEXTURE_1D: 1118 case GL_TEXTURE_BUFFER: 1119 case GL_PROXY_TEXTURE_1D: 1120 if (height == 0) 1121 img->Height2 = 0; 1122 else 1123 img->Height2 = 1; 1124 img->HeightLog2 = 0; 1125 if (depth == 0) 1126 img->Depth2 = 0; 1127 else 1128 img->Depth2 = 1; 1129 img->DepthLog2 = 0; 1130 break; 1131 case GL_TEXTURE_1D_ARRAY: 1132 case GL_PROXY_TEXTURE_1D_ARRAY: 1133 img->Height2 = height; /* no border */ 1134 img->HeightLog2 = 0; /* not used */ 1135 if (depth == 0) 1136 img->Depth2 = 0; 1137 else 1138 img->Depth2 = 1; 1139 img->DepthLog2 = 0; 1140 break; 1141 case GL_TEXTURE_2D: 1142 case GL_TEXTURE_RECTANGLE: 1143 case GL_TEXTURE_CUBE_MAP: 1144 case GL_TEXTURE_CUBE_MAP_POSITIVE_X: 1145 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: 1146 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: 1147 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: 1148 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: 1149 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: 1150 case GL_TEXTURE_EXTERNAL_OES: 1151 case GL_PROXY_TEXTURE_2D: 1152 case GL_PROXY_TEXTURE_RECTANGLE: 1153 case GL_PROXY_TEXTURE_CUBE_MAP: 1154 img->Height2 = height - 2 * border; /* == 1 << img->HeightLog2; */ 1155 img->HeightLog2 = _mesa_logbase2(img->Height2); 1156 if (depth == 0) 1157 img->Depth2 = 0; 1158 else 1159 img->Depth2 = 1; 1160 img->DepthLog2 = 0; 1161 break; 1162 case GL_TEXTURE_2D_ARRAY: 1163 case GL_PROXY_TEXTURE_2D_ARRAY: 1164 img->Height2 = height - 2 * border; /* == 1 << img->HeightLog2; */ 1165 img->HeightLog2 = _mesa_logbase2(img->Height2); 1166 img->Depth2 = depth; /* no border */ 1167 img->DepthLog2 = 0; /* not used */ 1168 break; 1169 case GL_TEXTURE_3D: 1170 case GL_PROXY_TEXTURE_3D: 1171 img->Height2 = height - 2 * border; /* == 1 << img->HeightLog2; */ 1172 img->HeightLog2 = _mesa_logbase2(img->Height2); 1173 img->Depth2 = depth - 2 * border; /* == 1 << img->DepthLog2; */ 1174 img->DepthLog2 = _mesa_logbase2(img->Depth2); 1175 break; 1176 default: 1177 _mesa_problem(NULL, "invalid target 0x%x in _mesa_init_teximage_fields()", 1178 target); 1179 } 1180 1181 img->MaxLog2 = MAX2(img->WidthLog2, img->HeightLog2); 1182 img->TexFormat = format; 1183} 1184 1185 1186/** 1187 * Free and clear fields of the gl_texture_image struct. 1188 * 1189 * \param ctx GL context. 1190 * \param texImage texture image structure to be cleared. 1191 * 1192 * After the call, \p texImage will have no data associated with it. Its 1193 * fields are cleared so that its parent object will test incomplete. 1194 */ 1195void 1196_mesa_clear_texture_image(struct gl_context *ctx, 1197 struct gl_texture_image *texImage) 1198{ 1199 ctx->Driver.FreeTextureImageBuffer(ctx, texImage); 1200 clear_teximage_fields(texImage); 1201} 1202 1203 1204/** 1205 * This is the fallback for Driver.TestProxyTexImage(). Test the texture 1206 * level, width, height and depth against the ctx->Const limits for textures. 1207 * 1208 * A hardware driver might override this function if, for example, the 1209 * max 3D texture size is 512x512x64 (i.e. not a cube). 1210 * 1211 * Note that width, height, depth == 0 is not an error. However, a 1212 * texture with zero width/height/depth will be considered "incomplete" 1213 * and texturing will effectively be disabled. 1214 * 1215 * \param target one of GL_PROXY_TEXTURE_1D, GL_PROXY_TEXTURE_2D, 1216 * GL_PROXY_TEXTURE_3D, GL_PROXY_TEXTURE_RECTANGLE_NV, 1217 * GL_PROXY_TEXTURE_CUBE_MAP_ARB. 1218 * \param level as passed to glTexImage 1219 * \param internalFormat as passed to glTexImage 1220 * \param format as passed to glTexImage 1221 * \param type as passed to glTexImage 1222 * \param width as passed to glTexImage 1223 * \param height as passed to glTexImage 1224 * \param depth as passed to glTexImage 1225 * \param border as passed to glTexImage 1226 * \return GL_TRUE if the image is acceptable, GL_FALSE if not acceptable. 1227 */ 1228GLboolean 1229_mesa_test_proxy_teximage(struct gl_context *ctx, GLenum target, GLint level, 1230 GLint internalFormat, GLenum format, GLenum type, 1231 GLint width, GLint height, GLint depth, GLint border) 1232{ 1233 GLint maxSize; 1234 1235 (void) internalFormat; 1236 (void) format; 1237 (void) type; 1238 1239 switch (target) { 1240 case GL_PROXY_TEXTURE_1D: 1241 maxSize = 1 << (ctx->Const.MaxTextureLevels - 1); 1242 if (width < 2 * border || width > 2 * border + maxSize) 1243 return GL_FALSE; 1244 if (level >= ctx->Const.MaxTextureLevels) 1245 return GL_FALSE; 1246 if (!ctx->Extensions.ARB_texture_non_power_of_two) { 1247 if (width > 0 && !_mesa_is_pow_two(width - 2 * border)) 1248 return GL_FALSE; 1249 } 1250 return GL_TRUE; 1251 1252 case GL_PROXY_TEXTURE_2D: 1253 maxSize = 1 << (ctx->Const.MaxTextureLevels - 1); 1254 if (width < 2 * border || width > 2 * border + maxSize) 1255 return GL_FALSE; 1256 if (height < 2 * border || height > 2 * border + maxSize) 1257 return GL_FALSE; 1258 if (level >= ctx->Const.MaxTextureLevels) 1259 return GL_FALSE; 1260 if (!ctx->Extensions.ARB_texture_non_power_of_two) { 1261 if (width > 0 && !_mesa_is_pow_two(width - 2 * border)) 1262 return GL_FALSE; 1263 if (height > 0 && !_mesa_is_pow_two(height - 2 * border)) 1264 return GL_FALSE; 1265 } 1266 return GL_TRUE; 1267 1268 case GL_PROXY_TEXTURE_3D: 1269 maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1); 1270 if (width < 2 * border || width > 2 * border + maxSize) 1271 return GL_FALSE; 1272 if (height < 2 * border || height > 2 * border + maxSize) 1273 return GL_FALSE; 1274 if (depth < 2 * border || depth > 2 * border + maxSize) 1275 return GL_FALSE; 1276 if (level >= ctx->Const.Max3DTextureLevels) 1277 return GL_FALSE; 1278 if (!ctx->Extensions.ARB_texture_non_power_of_two) { 1279 if (width > 0 && !_mesa_is_pow_two(width - 2 * border)) 1280 return GL_FALSE; 1281 if (height > 0 && !_mesa_is_pow_two(height - 2 * border)) 1282 return GL_FALSE; 1283 if (depth > 0 && !_mesa_is_pow_two(depth - 2 * border)) 1284 return GL_FALSE; 1285 } 1286 return GL_TRUE; 1287 1288 case GL_PROXY_TEXTURE_RECTANGLE_NV: 1289 maxSize = ctx->Const.MaxTextureRectSize; 1290 if (width < 0 || width > maxSize) 1291 return GL_FALSE; 1292 if (height < 0 || height > maxSize) 1293 return GL_FALSE; 1294 if (level != 0) 1295 return GL_FALSE; 1296 return GL_TRUE; 1297 1298 case GL_PROXY_TEXTURE_CUBE_MAP_ARB: 1299 maxSize = 1 << (ctx->Const.MaxCubeTextureLevels - 1); 1300 if (width < 2 * border || width > 2 * border + maxSize) 1301 return GL_FALSE; 1302 if (height < 2 * border || height > 2 * border + maxSize) 1303 return GL_FALSE; 1304 if (level >= ctx->Const.MaxCubeTextureLevels) 1305 return GL_FALSE; 1306 if (!ctx->Extensions.ARB_texture_non_power_of_two) { 1307 if (width > 0 && !_mesa_is_pow_two(width - 2 * border)) 1308 return GL_FALSE; 1309 if (height > 0 && !_mesa_is_pow_two(height - 2 * border)) 1310 return GL_FALSE; 1311 } 1312 return GL_TRUE; 1313 1314 case GL_PROXY_TEXTURE_1D_ARRAY_EXT: 1315 maxSize = 1 << (ctx->Const.MaxTextureLevels - 1); 1316 if (width < 2 * border || width > 2 * border + maxSize) 1317 return GL_FALSE; 1318 if (height < 1 || height > ctx->Const.MaxArrayTextureLayers) 1319 return GL_FALSE; 1320 if (level >= ctx->Const.MaxTextureLevels) 1321 return GL_FALSE; 1322 if (!ctx->Extensions.ARB_texture_non_power_of_two) { 1323 if (width > 0 && !_mesa_is_pow_two(width - 2 * border)) 1324 return GL_FALSE; 1325 } 1326 return GL_TRUE; 1327 1328 case GL_PROXY_TEXTURE_2D_ARRAY_EXT: 1329 maxSize = 1 << (ctx->Const.MaxTextureLevels - 1); 1330 if (width < 2 * border || width > 2 * border + maxSize) 1331 return GL_FALSE; 1332 if (height < 2 * border || height > 2 * border + maxSize) 1333 return GL_FALSE; 1334 if (depth < 1 || depth > ctx->Const.MaxArrayTextureLayers) 1335 return GL_FALSE; 1336 if (level >= ctx->Const.MaxTextureLevels) 1337 return GL_FALSE; 1338 if (!ctx->Extensions.ARB_texture_non_power_of_two) { 1339 if (width > 0 && !_mesa_is_pow_two(width - 2 * border)) 1340 return GL_FALSE; 1341 if (height > 0 && !_mesa_is_pow_two(height - 2 * border)) 1342 return GL_FALSE; 1343 } 1344 return GL_TRUE; 1345 1346 default: 1347 _mesa_problem(ctx, "Invalid target in _mesa_test_proxy_teximage"); 1348 return GL_FALSE; 1349 } 1350} 1351 1352 1353/** 1354 * Check if the memory used by the texture would exceed the driver's limit. 1355 * This lets us support a max 3D texture size of 8K (for example) but 1356 * prevents allocating a full 8K x 8K x 8K texture. 1357 * XXX this could be rolled into the proxy texture size test (above) but 1358 * we don't have the actual texture internal format at that point. 1359 */ 1360static GLboolean 1361legal_texture_size(struct gl_context *ctx, gl_format format, 1362 GLint width, GLint height, GLint depth) 1363{ 1364 uint64_t bytes = _mesa_format_image_size64(format, width, height, depth); 1365 uint64_t mbytes = bytes / (1024 * 1024); /* convert to MB */ 1366 return mbytes <= (uint64_t) ctx->Const.MaxTextureMbytes; 1367} 1368 1369 1370/** 1371 * Return true if the format is only valid for glCompressedTexImage. 1372 */ 1373static GLboolean 1374compressedteximage_only_format(const struct gl_context *ctx, GLenum format) 1375{ 1376 switch (format) { 1377 case GL_ETC1_RGB8_OES: 1378 return GL_TRUE; 1379 default: 1380 return GL_FALSE; 1381 } 1382} 1383 1384 1385/** 1386 * Helper function to determine whether a target and specific compression 1387 * format are supported. 1388 */ 1389static GLboolean 1390target_can_be_compressed(const struct gl_context *ctx, GLenum target, 1391 GLenum intFormat) 1392{ 1393 (void) intFormat; /* not used yet */ 1394 1395 switch (target) { 1396 case GL_TEXTURE_2D: 1397 case GL_PROXY_TEXTURE_2D: 1398 return GL_TRUE; /* true for any compressed format so far */ 1399 case GL_PROXY_TEXTURE_CUBE_MAP: 1400 case GL_TEXTURE_CUBE_MAP_POSITIVE_X: 1401 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: 1402 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: 1403 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: 1404 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: 1405 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: 1406 return ctx->Extensions.ARB_texture_cube_map; 1407 case GL_PROXY_TEXTURE_2D_ARRAY_EXT: 1408 case GL_TEXTURE_2D_ARRAY_EXT: 1409 return (ctx->Extensions.MESA_texture_array || 1410 ctx->Extensions.EXT_texture_array); 1411 default: 1412 return GL_FALSE; 1413 } 1414} 1415 1416 1417/** 1418 * Check if the given texture target value is legal for a 1419 * glTexImage1/2/3D call. 1420 */ 1421static GLboolean 1422legal_teximage_target(struct gl_context *ctx, GLuint dims, GLenum target) 1423{ 1424 switch (dims) { 1425 case 1: 1426 switch (target) { 1427 case GL_TEXTURE_1D: 1428 case GL_PROXY_TEXTURE_1D: 1429 return GL_TRUE; 1430 default: 1431 return GL_FALSE; 1432 } 1433 case 2: 1434 switch (target) { 1435 case GL_TEXTURE_2D: 1436 case GL_PROXY_TEXTURE_2D: 1437 return GL_TRUE; 1438 case GL_PROXY_TEXTURE_CUBE_MAP: 1439 case GL_TEXTURE_CUBE_MAP_POSITIVE_X: 1440 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: 1441 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: 1442 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: 1443 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: 1444 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: 1445 return ctx->Extensions.ARB_texture_cube_map; 1446 case GL_TEXTURE_RECTANGLE_NV: 1447 case GL_PROXY_TEXTURE_RECTANGLE_NV: 1448 return ctx->Extensions.NV_texture_rectangle; 1449 case GL_TEXTURE_1D_ARRAY_EXT: 1450 case GL_PROXY_TEXTURE_1D_ARRAY_EXT: 1451 return (ctx->Extensions.MESA_texture_array || 1452 ctx->Extensions.EXT_texture_array); 1453 default: 1454 return GL_FALSE; 1455 } 1456 case 3: 1457 switch (target) { 1458 case GL_TEXTURE_3D: 1459 case GL_PROXY_TEXTURE_3D: 1460 return GL_TRUE; 1461 case GL_TEXTURE_2D_ARRAY_EXT: 1462 case GL_PROXY_TEXTURE_2D_ARRAY_EXT: 1463 return (ctx->Extensions.MESA_texture_array || 1464 ctx->Extensions.EXT_texture_array); 1465 default: 1466 return GL_FALSE; 1467 } 1468 default: 1469 _mesa_problem(ctx, "invalid dims=%u in legal_teximage_target()", dims); 1470 return GL_FALSE; 1471 } 1472} 1473 1474 1475/** 1476 * Check if the given texture target value is legal for a 1477 * glTexSubImage, glCopyTexSubImage or glCopyTexImage call. 1478 * The difference compared to legal_teximage_target() above is that 1479 * proxy targets are not supported. 1480 */ 1481static GLboolean 1482legal_texsubimage_target(struct gl_context *ctx, GLuint dims, GLenum target) 1483{ 1484 switch (dims) { 1485 case 1: 1486 return target == GL_TEXTURE_1D; 1487 case 2: 1488 switch (target) { 1489 case GL_TEXTURE_2D: 1490 return GL_TRUE; 1491 case GL_TEXTURE_CUBE_MAP_POSITIVE_X: 1492 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: 1493 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: 1494 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: 1495 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: 1496 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: 1497 return ctx->Extensions.ARB_texture_cube_map; 1498 case GL_TEXTURE_RECTANGLE_NV: 1499 return ctx->Extensions.NV_texture_rectangle; 1500 case GL_TEXTURE_1D_ARRAY_EXT: 1501 return (ctx->Extensions.MESA_texture_array || 1502 ctx->Extensions.EXT_texture_array); 1503 default: 1504 return GL_FALSE; 1505 } 1506 case 3: 1507 switch (target) { 1508 case GL_TEXTURE_3D: 1509 return GL_TRUE; 1510 case GL_TEXTURE_2D_ARRAY_EXT: 1511 return (ctx->Extensions.MESA_texture_array || 1512 ctx->Extensions.EXT_texture_array); 1513 default: 1514 return GL_FALSE; 1515 } 1516 default: 1517 _mesa_problem(ctx, "invalid dims=%u in legal_texsubimage_target()", 1518 dims); 1519 return GL_FALSE; 1520 } 1521} 1522 1523 1524/** 1525 * Helper function to determine if a texture object is mutable (in terms 1526 * of GL_ARB_texture_storage). 1527 */ 1528static GLboolean 1529mutable_tex_object(struct gl_context *ctx, GLenum target) 1530{ 1531 if (ctx->Extensions.ARB_texture_storage) { 1532 struct gl_texture_object *texObj = 1533 _mesa_get_current_tex_object(ctx, target); 1534 return !texObj->Immutable; 1535 } 1536 return GL_TRUE; 1537} 1538 1539 1540 1541/** 1542 * Test the glTexImage[123]D() parameters for errors. 1543 * 1544 * \param ctx GL context. 1545 * \param dimensions texture image dimensions (must be 1, 2 or 3). 1546 * \param target texture target given by the user. 1547 * \param level image level given by the user. 1548 * \param internalFormat internal format given by the user. 1549 * \param format pixel data format given by the user. 1550 * \param type pixel data type given by the user. 1551 * \param width image width given by the user. 1552 * \param height image height given by the user. 1553 * \param depth image depth given by the user. 1554 * \param border image border given by the user. 1555 * 1556 * \return GL_TRUE if an error was detected, or GL_FALSE if no errors. 1557 * 1558 * Verifies each of the parameters against the constants specified in 1559 * __struct gl_contextRec::Const and the supported extensions, and according 1560 * to the OpenGL specification. 1561 */ 1562static GLboolean 1563texture_error_check( struct gl_context *ctx, 1564 GLuint dimensions, GLenum target, 1565 GLint level, GLint internalFormat, 1566 GLenum format, GLenum type, 1567 GLint width, GLint height, 1568 GLint depth, GLint border ) 1569{ 1570 const GLenum proxyTarget = get_proxy_target(target); 1571 const GLboolean isProxy = target == proxyTarget; 1572 GLboolean sizeOK = GL_TRUE; 1573 GLboolean colorFormat; 1574 GLenum err; 1575 1576 /* Even though there are no color-index textures, we still have to support 1577 * uploading color-index data and remapping it to RGB via the 1578 * GL_PIXEL_MAP_I_TO_[RGBA] tables. 1579 */ 1580 const GLboolean indexFormat = (format == GL_COLOR_INDEX); 1581 1582 /* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */ 1583 if (level < 0 || level >= MAX_TEXTURE_LEVELS) { 1584 if (!isProxy) { 1585 _mesa_error(ctx, GL_INVALID_VALUE, 1586 "glTexImage%dD(level=%d)", dimensions, level); 1587 } 1588 return GL_TRUE; 1589 } 1590 1591 /* Check border */ 1592 if (border < 0 || border > 1 || 1593 ((target == GL_TEXTURE_RECTANGLE_NV || 1594 target == GL_PROXY_TEXTURE_RECTANGLE_NV) && border != 0)) { 1595 if (!isProxy) { 1596 _mesa_error(ctx, GL_INVALID_VALUE, 1597 "glTexImage%dD(border=%d)", dimensions, border); 1598 } 1599 return GL_TRUE; 1600 } 1601 1602 if (width < 0 || height < 0 || depth < 0) { 1603 if (!isProxy) { 1604 _mesa_error(ctx, GL_INVALID_VALUE, 1605 "glTexImage%dD(width, height or depth < 0)", dimensions); 1606 } 1607 return GL_TRUE; 1608 } 1609 1610 /* Do this simple check before calling the TestProxyTexImage() function */ 1611 if (proxyTarget == GL_PROXY_TEXTURE_CUBE_MAP_ARB) { 1612 sizeOK = (width == height); 1613 } 1614 1615 /* 1616 * Use the proxy texture driver hook to see if the size/level/etc are 1617 * legal. 1618 */ 1619 sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level, 1620 internalFormat, format, 1621 type, width, height, 1622 depth, border); 1623 if (!sizeOK) { 1624 if (!isProxy) { 1625 _mesa_error(ctx, GL_INVALID_VALUE, 1626 "glTexImage%dD(level=%d, width=%d, height=%d, depth=%d)", 1627 dimensions, level, width, height, depth); 1628 } 1629 return GL_TRUE; 1630 } 1631 1632 /* Check internalFormat */ 1633 if (_mesa_base_tex_format(ctx, internalFormat) < 0) { 1634 if (!isProxy) { 1635 _mesa_error(ctx, GL_INVALID_VALUE, 1636 "glTexImage%dD(internalFormat=%s)", 1637 dimensions, _mesa_lookup_enum_by_nr(internalFormat)); 1638 } 1639 return GL_TRUE; 1640 } 1641 1642 /* Check incoming image format and type */ 1643 err = _mesa_error_check_format_and_type(ctx, format, type); 1644 if (err != GL_NO_ERROR) { 1645 if (!isProxy) { 1646 _mesa_error(ctx, err, 1647 "glTexImage%dD(incompatible format 0x%x, type 0x%x)", 1648 dimensions, format, type); 1649 } 1650 return GL_TRUE; 1651 } 1652 1653 /* make sure internal format and format basically agree */ 1654 colorFormat = _mesa_is_color_format(format); 1655 if ((_mesa_is_color_format(internalFormat) && !colorFormat && !indexFormat) || 1656 (_mesa_is_depth_format(internalFormat) != _mesa_is_depth_format(format)) || 1657 (_mesa_is_ycbcr_format(internalFormat) != _mesa_is_ycbcr_format(format)) || 1658 (_mesa_is_depthstencil_format(internalFormat) != _mesa_is_depthstencil_format(format)) || 1659 (_mesa_is_dudv_format(internalFormat) != _mesa_is_dudv_format(format))) { 1660 if (!isProxy) 1661 _mesa_error(ctx, GL_INVALID_OPERATION, 1662 "glTexImage%dD(incompatible internalFormat 0x%x, format 0x%x)", 1663 dimensions, internalFormat, format); 1664 return GL_TRUE; 1665 } 1666 1667 /* additional checks for ycbcr textures */ 1668 if (internalFormat == GL_YCBCR_MESA) { 1669 ASSERT(ctx->Extensions.MESA_ycbcr_texture); 1670 if (type != GL_UNSIGNED_SHORT_8_8_MESA && 1671 type != GL_UNSIGNED_SHORT_8_8_REV_MESA) { 1672 char message[100]; 1673 _mesa_snprintf(message, sizeof(message), 1674 "glTexImage%dD(format/type YCBCR mismatch", dimensions); 1675 _mesa_error(ctx, GL_INVALID_ENUM, "%s", message); 1676 return GL_TRUE; /* error */ 1677 } 1678 if (target != GL_TEXTURE_2D && 1679 target != GL_PROXY_TEXTURE_2D && 1680 target != GL_TEXTURE_RECTANGLE_NV && 1681 target != GL_PROXY_TEXTURE_RECTANGLE_NV) { 1682 if (!isProxy) 1683 _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage(target)"); 1684 return GL_TRUE; 1685 } 1686 if (border != 0) { 1687 if (!isProxy) { 1688 char message[100]; 1689 _mesa_snprintf(message, sizeof(message), 1690 "glTexImage%dD(format=GL_YCBCR_MESA and border=%d)", 1691 dimensions, border); 1692 _mesa_error(ctx, GL_INVALID_VALUE, "%s", message); 1693 } 1694 return GL_TRUE; 1695 } 1696 } 1697 1698 /* additional checks for depth textures */ 1699 if (_mesa_base_tex_format(ctx, internalFormat) == GL_DEPTH_COMPONENT) { 1700 /* Only 1D, 2D, rect, array and cube textures supported, not 3D 1701 * Cubemaps are only supported for GL version > 3.0 or with EXT_gpu_shader4 */ 1702 if (target != GL_TEXTURE_1D && 1703 target != GL_PROXY_TEXTURE_1D && 1704 target != GL_TEXTURE_2D && 1705 target != GL_PROXY_TEXTURE_2D && 1706 target != GL_TEXTURE_1D_ARRAY && 1707 target != GL_PROXY_TEXTURE_1D_ARRAY && 1708 target != GL_TEXTURE_2D_ARRAY && 1709 target != GL_PROXY_TEXTURE_2D_ARRAY && 1710 target != GL_TEXTURE_RECTANGLE_ARB && 1711 target != GL_PROXY_TEXTURE_RECTANGLE_ARB && 1712 !((_mesa_is_cube_face(target) || target == GL_PROXY_TEXTURE_CUBE_MAP) && 1713 (ctx->Version >= 30 || ctx->Extensions.EXT_gpu_shader4))) { 1714 if (!isProxy) 1715 _mesa_error(ctx, GL_INVALID_ENUM, 1716 "glTexImage(target/internalFormat)"); 1717 return GL_TRUE; 1718 } 1719 } 1720 1721 /* additional checks for compressed textures */ 1722 if (_mesa_is_compressed_format(ctx, internalFormat)) { 1723 if (!target_can_be_compressed(ctx, target, internalFormat)) { 1724 if (!isProxy) 1725 _mesa_error(ctx, GL_INVALID_ENUM, 1726 "glTexImage%dD(target)", dimensions); 1727 return GL_TRUE; 1728 } 1729 if (compressedteximage_only_format(ctx, internalFormat)) { 1730 _mesa_error(ctx, GL_INVALID_OPERATION, 1731 "glTexImage%dD(no compression for format)", dimensions); 1732 return GL_TRUE; 1733 } 1734 if (border != 0) { 1735 if (!isProxy) { 1736 _mesa_error(ctx, GL_INVALID_OPERATION, 1737 "glTexImage%dD(border!=0)", dimensions); 1738 } 1739 return GL_TRUE; 1740 } 1741 } 1742 1743 /* additional checks for integer textures */ 1744 if ((ctx->Version >= 30 || ctx->Extensions.EXT_texture_integer) && 1745 (_mesa_is_enum_format_integer(format) != 1746 _mesa_is_enum_format_integer(internalFormat))) { 1747 if (!isProxy) { 1748 _mesa_error(ctx, GL_INVALID_OPERATION, 1749 "glTexImage%dD(integer/non-integer format mismatch)", 1750 dimensions); 1751 } 1752 return GL_TRUE; 1753 } 1754 1755 if (!mutable_tex_object(ctx, target)) { 1756 _mesa_error(ctx, GL_INVALID_OPERATION, 1757 "glTexImage%dD(immutable texture)", dimensions); 1758 return GL_TRUE; 1759 } 1760 1761 /* if we get here, the parameters are OK */ 1762 return GL_FALSE; 1763} 1764 1765 1766/** 1767 * Test glTexSubImage[123]D() parameters for errors. 1768 * 1769 * \param ctx GL context. 1770 * \param dimensions texture image dimensions (must be 1, 2 or 3). 1771 * \param target texture target given by the user. 1772 * \param level image level given by the user. 1773 * \param xoffset sub-image x offset given by the user. 1774 * \param yoffset sub-image y offset given by the user. 1775 * \param zoffset sub-image z offset given by the user. 1776 * \param format pixel data format given by the user. 1777 * \param type pixel data type given by the user. 1778 * \param width image width given by the user. 1779 * \param height image height given by the user. 1780 * \param depth image depth given by the user. 1781 * 1782 * \return GL_TRUE if an error was detected, or GL_FALSE if no errors. 1783 * 1784 * Verifies each of the parameters against the constants specified in 1785 * __struct gl_contextRec::Const and the supported extensions, and according 1786 * to the OpenGL specification. 1787 */ 1788static GLboolean 1789subtexture_error_check( struct gl_context *ctx, GLuint dimensions, 1790 GLenum target, GLint level, 1791 GLint xoffset, GLint yoffset, GLint zoffset, 1792 GLint width, GLint height, GLint depth, 1793 GLenum format, GLenum type ) 1794{ 1795 GLenum err; 1796 1797 /* Basic level check */ 1798 if (level < 0 || level >= MAX_TEXTURE_LEVELS) { 1799 _mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage2D(level=%d)", level); 1800 return GL_TRUE; 1801 } 1802 1803 /* Check for negative sizes */ 1804 if (width < 0) { 1805 _mesa_error(ctx, GL_INVALID_VALUE, 1806 "glTexSubImage%dD(width=%d)", dimensions, width); 1807 return GL_TRUE; 1808 } 1809 if (height < 0 && dimensions > 1) { 1810 _mesa_error(ctx, GL_INVALID_VALUE, 1811 "glTexSubImage%dD(height=%d)", dimensions, height); 1812 return GL_TRUE; 1813 } 1814 if (depth < 0 && dimensions > 2) { 1815 _mesa_error(ctx, GL_INVALID_VALUE, 1816 "glTexSubImage%dD(depth=%d)", dimensions, depth); 1817 return GL_TRUE; 1818 } 1819 1820 err = _mesa_error_check_format_and_type(ctx, format, type); 1821 if (err != GL_NO_ERROR) { 1822 _mesa_error(ctx, err, 1823 "glTexSubImage%dD(incompatible format 0x%x, type 0x%x)", 1824 dimensions, format, type); 1825 return GL_TRUE; 1826 } 1827 1828 return GL_FALSE; 1829} 1830 1831 1832/** 1833 * Do second part of glTexSubImage which depends on the destination texture. 1834 * \return GL_TRUE if error recorded, GL_FALSE otherwise 1835 */ 1836static GLboolean 1837subtexture_error_check2( struct gl_context *ctx, GLuint dimensions, 1838 GLenum target, GLint level, 1839 GLint xoffset, GLint yoffset, GLint zoffset, 1840 GLint width, GLint height, GLint depth, 1841 GLenum format, GLenum type, 1842 const struct gl_texture_image *destTex ) 1843{ 1844 if (!destTex) { 1845 /* undefined image level */ 1846 _mesa_error(ctx, GL_INVALID_OPERATION, "glTexSubImage%dD", dimensions); 1847 return GL_TRUE; 1848 } 1849 1850 if (xoffset < -((GLint)destTex->Border)) { 1851 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(xoffset)", 1852 dimensions); 1853 return GL_TRUE; 1854 } 1855 if (xoffset + width > (GLint) (destTex->Width + destTex->Border)) { 1856 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(xoffset+width)", 1857 dimensions); 1858 return GL_TRUE; 1859 } 1860 if (dimensions > 1) { 1861 GLint yBorder = (target == GL_TEXTURE_1D_ARRAY) ? 0 : destTex->Border; 1862 if (yoffset < -yBorder) { 1863 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(yoffset)", 1864 dimensions); 1865 return GL_TRUE; 1866 } 1867 if (yoffset + height > (GLint) destTex->Height + yBorder) { 1868 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(yoffset+height)", 1869 dimensions); 1870 return GL_TRUE; 1871 } 1872 } 1873 if (dimensions > 2) { 1874 GLint zBorder = (target == GL_TEXTURE_2D_ARRAY) ? 0 : destTex->Border; 1875 if (zoffset < -zBorder) { 1876 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage3D(zoffset)"); 1877 return GL_TRUE; 1878 } 1879 if (zoffset + depth > (GLint) destTex->Depth + zBorder) { 1880 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage3D(zoffset+depth)"); 1881 return GL_TRUE; 1882 } 1883 } 1884 1885 if (_mesa_is_format_compressed(destTex->TexFormat)) { 1886 GLuint bw, bh; 1887 1888 if (compressedteximage_only_format(ctx, destTex->InternalFormat)) { 1889 _mesa_error(ctx, GL_INVALID_OPERATION, 1890 "glTexSubImage%dD(no compression for format)", dimensions); 1891 return GL_TRUE; 1892 } 1893 1894 /* do tests which depend on compression block size */ 1895 _mesa_get_format_block_size(destTex->TexFormat, &bw, &bh); 1896 1897 /* offset must be multiple of block size */ 1898 if ((xoffset % bw != 0) || (yoffset % bh != 0)) { 1899 _mesa_error(ctx, GL_INVALID_OPERATION, 1900 "glTexSubImage%dD(xoffset = %d, yoffset = %d)", 1901 dimensions, xoffset, yoffset); 1902 return GL_TRUE; 1903 } 1904 /* size must be multiple of bw by bh or equal to whole texture size */ 1905 if ((width % bw != 0) && (GLuint) width != destTex->Width) { 1906 _mesa_error(ctx, GL_INVALID_OPERATION, 1907 "glTexSubImage%dD(width = %d)", dimensions, width); 1908 return GL_TRUE; 1909 } 1910 if ((height % bh != 0) && (GLuint) height != destTex->Height) { 1911 _mesa_error(ctx, GL_INVALID_OPERATION, 1912 "glTexSubImage%dD(height = %d)", dimensions, height); 1913 return GL_TRUE; 1914 } 1915 } 1916 1917 if (ctx->Version >= 30 || ctx->Extensions.EXT_texture_integer) { 1918 /* both source and dest must be integer-valued, or neither */ 1919 if (_mesa_is_format_integer_color(destTex->TexFormat) != 1920 _mesa_is_enum_format_integer(format)) { 1921 _mesa_error(ctx, GL_INVALID_OPERATION, 1922 "glTexSubImage%dD(integer/non-integer format mismatch)", 1923 dimensions); 1924 return GL_TRUE; 1925 } 1926 } 1927 1928 return GL_FALSE; 1929} 1930 1931 1932/** 1933 * Test glCopyTexImage[12]D() parameters for errors. 1934 * 1935 * \param ctx GL context. 1936 * \param dimensions texture image dimensions (must be 1, 2 or 3). 1937 * \param target texture target given by the user. 1938 * \param level image level given by the user. 1939 * \param internalFormat internal format given by the user. 1940 * \param width image width given by the user. 1941 * \param height image height given by the user. 1942 * \param border texture border. 1943 * 1944 * \return GL_TRUE if an error was detected, or GL_FALSE if no errors. 1945 * 1946 * Verifies each of the parameters against the constants specified in 1947 * __struct gl_contextRec::Const and the supported extensions, and according 1948 * to the OpenGL specification. 1949 */ 1950static GLboolean 1951copytexture_error_check( struct gl_context *ctx, GLuint dimensions, 1952 GLenum target, GLint level, GLint internalFormat, 1953 GLint width, GLint height, GLint border ) 1954{ 1955 const GLenum proxyTarget = get_proxy_target(target); 1956 const GLenum type = GL_FLOAT; 1957 GLboolean sizeOK; 1958 GLint baseFormat; 1959 1960 /* check target */ 1961 if (!legal_texsubimage_target(ctx, dimensions, target)) { 1962 _mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexImage%uD(target=%s)", 1963 dimensions, _mesa_lookup_enum_by_nr(target)); 1964 return GL_TRUE; 1965 } 1966 1967 /* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */ 1968 if (level < 0 || level >= MAX_TEXTURE_LEVELS) { 1969 _mesa_error(ctx, GL_INVALID_VALUE, 1970 "glCopyTexImage%dD(level=%d)", dimensions, level); 1971 return GL_TRUE; 1972 } 1973 1974 /* Check that the source buffer is complete */ 1975 if (_mesa_is_user_fbo(ctx->ReadBuffer)) { 1976 if (ctx->ReadBuffer->_Status == 0) { 1977 _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer); 1978 } 1979 if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) { 1980 _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT, 1981 "glCopyTexImage%dD(invalid readbuffer)", dimensions); 1982 return GL_TRUE; 1983 } 1984 1985 if (ctx->ReadBuffer->Visual.samples > 0) { 1986 _mesa_error(ctx, GL_INVALID_OPERATION, 1987 "glCopyTexImage%dD(multisample FBO)", 1988 dimensions); 1989 return GL_TRUE; 1990 } 1991 } 1992 1993 /* Check border */ 1994 if (border < 0 || border > 1 || 1995 ((target == GL_TEXTURE_RECTANGLE_NV || 1996 target == GL_PROXY_TEXTURE_RECTANGLE_NV) && border != 0)) { 1997 return GL_TRUE; 1998 } 1999 2000 baseFormat = _mesa_base_tex_format(ctx, internalFormat); 2001 if (baseFormat < 0) { 2002 _mesa_error(ctx, GL_INVALID_VALUE, 2003 "glCopyTexImage%dD(internalFormat)", dimensions); 2004 return GL_TRUE; 2005 } 2006 2007 if (!_mesa_source_buffer_exists(ctx, baseFormat)) { 2008 _mesa_error(ctx, GL_INVALID_OPERATION, 2009 "glCopyTexImage%dD(missing readbuffer)", dimensions); 2010 return GL_TRUE; 2011 } 2012 2013 /* From the EXT_texture_integer spec: 2014 * 2015 * "INVALID_OPERATION is generated by CopyTexImage* and CopyTexSubImage* 2016 * if the texture internalformat is an integer format and the read color 2017 * buffer is not an integer format, or if the internalformat is not an 2018 * integer format and the read color buffer is an integer format." 2019 */ 2020 if (_mesa_is_color_format(internalFormat)) { 2021 struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer; 2022 2023 if (_mesa_is_enum_format_integer(rb->InternalFormat) != 2024 _mesa_is_enum_format_integer(internalFormat)) { 2025 _mesa_error(ctx, GL_INVALID_OPERATION, 2026 "glCopyTexImage%dD(integer vs non-integer)", dimensions); 2027 return GL_TRUE; 2028 } 2029 } 2030 2031 /* Do size, level checking */ 2032 sizeOK = (proxyTarget == GL_PROXY_TEXTURE_CUBE_MAP_ARB) 2033 ? (width == height) : 1; 2034 2035 sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level, 2036 internalFormat, baseFormat, 2037 type, width, height, 2038 1, border); 2039 2040 if (!sizeOK) { 2041 if (dimensions == 1) { 2042 _mesa_error(ctx, GL_INVALID_VALUE, 2043 "glCopyTexImage1D(width=%d)", width); 2044 } 2045 else { 2046 ASSERT(dimensions == 2); 2047 _mesa_error(ctx, GL_INVALID_VALUE, 2048 "glCopyTexImage2D(width=%d, height=%d)", width, height); 2049 } 2050 return GL_TRUE; 2051 } 2052 2053 if (_mesa_is_compressed_format(ctx, internalFormat)) { 2054 if (!target_can_be_compressed(ctx, target, internalFormat)) { 2055 _mesa_error(ctx, GL_INVALID_ENUM, 2056 "glCopyTexImage%dD(target)", dimensions); 2057 return GL_TRUE; 2058 } 2059 if (compressedteximage_only_format(ctx, internalFormat)) { 2060 _mesa_error(ctx, GL_INVALID_OPERATION, 2061 "glCopyTexImage%dD(no compression for format)", dimensions); 2062 return GL_TRUE; 2063 } 2064 if (border != 0) { 2065 _mesa_error(ctx, GL_INVALID_OPERATION, 2066 "glCopyTexImage%dD(border!=0)", dimensions); 2067 return GL_TRUE; 2068 } 2069 } 2070 2071 if (!mutable_tex_object(ctx, target)) { 2072 _mesa_error(ctx, GL_INVALID_OPERATION, 2073 "glCopyTexImage%dD(immutable texture)", dimensions); 2074 return GL_TRUE; 2075 } 2076 2077 /* if we get here, the parameters are OK */ 2078 return GL_FALSE; 2079} 2080 2081 2082/** 2083 * Test glCopyTexSubImage[12]D() parameters for errors. 2084 * Note that this is the first part of error checking. 2085 * See also copytexsubimage_error_check2() below for the second part. 2086 * 2087 * \param ctx GL context. 2088 * \param dimensions texture image dimensions (must be 1, 2 or 3). 2089 * \param target texture target given by the user. 2090 * \param level image level given by the user. 2091 * 2092 * \return GL_TRUE if an error was detected, or GL_FALSE if no errors. 2093 */ 2094static GLboolean 2095copytexsubimage_error_check1( struct gl_context *ctx, GLuint dimensions, 2096 GLenum target, GLint level) 2097{ 2098 /* Check that the source buffer is complete */ 2099 if (_mesa_is_user_fbo(ctx->ReadBuffer)) { 2100 if (ctx->ReadBuffer->_Status == 0) { 2101 _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer); 2102 } 2103 if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) { 2104 _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT, 2105 "glCopyTexImage%dD(invalid readbuffer)", dimensions); 2106 return GL_TRUE; 2107 } 2108 2109 if (ctx->ReadBuffer->Visual.samples > 0) { 2110 _mesa_error(ctx, GL_INVALID_OPERATION, 2111 "glCopyTexSubImage%dD(multisample FBO)", 2112 dimensions); 2113 return GL_TRUE; 2114 } 2115 } 2116 2117 /* check target (proxies not allowed) */ 2118 if (!legal_texsubimage_target(ctx, dimensions, target)) { 2119 _mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexSubImage%uD(target=%s)", 2120 dimensions, _mesa_lookup_enum_by_nr(target)); 2121 return GL_TRUE; 2122 } 2123 2124 /* Check level */ 2125 if (level < 0 || level >= MAX_TEXTURE_LEVELS) { 2126 _mesa_error(ctx, GL_INVALID_VALUE, 2127 "glCopyTexSubImage%dD(level=%d)", dimensions, level); 2128 return GL_TRUE; 2129 } 2130 2131 return GL_FALSE; 2132} 2133 2134 2135/** 2136 * Second part of error checking for glCopyTexSubImage[12]D(). 2137 * \param xoffset sub-image x offset given by the user. 2138 * \param yoffset sub-image y offset given by the user. 2139 * \param zoffset sub-image z offset given by the user. 2140 * \param width image width given by the user. 2141 * \param height image height given by the user. 2142 */ 2143static GLboolean 2144copytexsubimage_error_check2( struct gl_context *ctx, GLuint dimensions, 2145 GLenum target, GLint level, 2146 GLint xoffset, GLint yoffset, GLint zoffset, 2147 GLsizei width, GLsizei height, 2148 const struct gl_texture_image *teximage ) 2149{ 2150 /* check that dest tex image exists */ 2151 if (!teximage) { 2152 _mesa_error(ctx, GL_INVALID_OPERATION, 2153 "glCopyTexSubImage%dD(undefined texture level: %d)", 2154 dimensions, level); 2155 return GL_TRUE; 2156 } 2157 2158 /* Check size */ 2159 if (width < 0) { 2160 _mesa_error(ctx, GL_INVALID_VALUE, 2161 "glCopyTexSubImage%dD(width=%d)", dimensions, width); 2162 return GL_TRUE; 2163 } 2164 if (dimensions > 1 && height < 0) { 2165 _mesa_error(ctx, GL_INVALID_VALUE, 2166 "glCopyTexSubImage%dD(height=%d)", dimensions, height); 2167 return GL_TRUE; 2168 } 2169 2170 /* check x/y offsets */ 2171 if (xoffset < -((GLint)teximage->Border)) { 2172 _mesa_error(ctx, GL_INVALID_VALUE, 2173 "glCopyTexSubImage%dD(xoffset=%d)", dimensions, xoffset); 2174 return GL_TRUE; 2175 } 2176 if (xoffset + width > (GLint) (teximage->Width + teximage->Border)) { 2177 _mesa_error(ctx, GL_INVALID_VALUE, 2178 "glCopyTexSubImage%dD(xoffset+width)", dimensions); 2179 return GL_TRUE; 2180 } 2181 if (dimensions > 1) { 2182 GLint yBorder = (target == GL_TEXTURE_1D_ARRAY) ? 0 : teximage->Border; 2183 if (yoffset < -yBorder) { 2184 _mesa_error(ctx, GL_INVALID_VALUE, 2185 "glCopyTexSubImage%dD(yoffset=%d)", dimensions, yoffset); 2186 return GL_TRUE; 2187 } 2188 /* NOTE: we're adding the border here, not subtracting! */ 2189 if (yoffset + height > (GLint) teximage->Height + yBorder) { 2190 _mesa_error(ctx, GL_INVALID_VALUE, 2191 "glCopyTexSubImage%dD(yoffset+height)", dimensions); 2192 return GL_TRUE; 2193 } 2194 } 2195 2196 /* check z offset */ 2197 if (dimensions > 2) { 2198 GLint zBorder = (target == GL_TEXTURE_2D_ARRAY) ? 0 : teximage->Border; 2199 if (zoffset < -zBorder) { 2200 _mesa_error(ctx, GL_INVALID_VALUE, 2201 "glCopyTexSubImage%dD(zoffset)", dimensions); 2202 return GL_TRUE; 2203 } 2204 if (zoffset > (GLint) teximage->Depth + zBorder) { 2205 _mesa_error(ctx, GL_INVALID_VALUE, 2206 "glCopyTexSubImage%dD(zoffset+depth)", dimensions); 2207 return GL_TRUE; 2208 } 2209 } 2210 2211 if (_mesa_is_format_compressed(teximage->TexFormat)) { 2212 if (compressedteximage_only_format(ctx, teximage->InternalFormat)) { 2213 _mesa_error(ctx, GL_INVALID_OPERATION, 2214 "glCopyTexSubImage%dD(no compression for format)", dimensions); 2215 return GL_TRUE; 2216 } 2217 /* offset must be multiple of 4 */ 2218 if ((xoffset & 3) || (yoffset & 3)) { 2219 _mesa_error(ctx, GL_INVALID_VALUE, 2220 "glCopyTexSubImage%dD(xoffset or yoffset)", dimensions); 2221 return GL_TRUE; 2222 } 2223 /* size must be multiple of 4 */ 2224 if ((width & 3) != 0 && (GLuint) width != teximage->Width) { 2225 _mesa_error(ctx, GL_INVALID_VALUE, 2226 "glCopyTexSubImage%dD(width)", dimensions); 2227 return GL_TRUE; 2228 } 2229 if ((height & 3) != 0 && (GLuint) height != teximage->Height) { 2230 _mesa_error(ctx, GL_INVALID_VALUE, 2231 "glCopyTexSubImage%dD(height)", dimensions); 2232 return GL_TRUE; 2233 } 2234 } 2235 2236 if (teximage->InternalFormat == GL_YCBCR_MESA) { 2237 _mesa_error(ctx, GL_INVALID_OPERATION, "glCopyTexSubImage2D"); 2238 return GL_TRUE; 2239 } 2240 2241 if (!_mesa_source_buffer_exists(ctx, teximage->_BaseFormat)) { 2242 _mesa_error(ctx, GL_INVALID_OPERATION, 2243 "glCopyTexSubImage%dD(missing readbuffer, format=0x%x)", 2244 dimensions, teximage->_BaseFormat); 2245 return GL_TRUE; 2246 } 2247 2248 /* From the EXT_texture_integer spec: 2249 * 2250 * "INVALID_OPERATION is generated by CopyTexImage* and CopyTexSubImage* 2251 * if the texture internalformat is an integer format and the read color 2252 * buffer is not an integer format, or if the internalformat is not an 2253 * integer format and the read color buffer is an integer format." 2254 */ 2255 if (_mesa_is_color_format(teximage->InternalFormat)) { 2256 struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer; 2257 2258 if (_mesa_is_format_integer_color(rb->Format) != 2259 _mesa_is_format_integer_color(teximage->TexFormat)) { 2260 _mesa_error(ctx, GL_INVALID_OPERATION, 2261 "glCopyTexImage%dD(integer vs non-integer)", dimensions); 2262 return GL_TRUE; 2263 } 2264 } 2265 2266 /* if we get here, the parameters are OK */ 2267 return GL_FALSE; 2268} 2269 2270 2271/** Callback info for walking over FBO hash table */ 2272struct cb_info 2273{ 2274 struct gl_context *ctx; 2275 struct gl_texture_object *texObj; 2276 GLuint level, face; 2277}; 2278 2279 2280/** 2281 * Check render to texture callback. Called from _mesa_HashWalk(). 2282 */ 2283static void 2284check_rtt_cb(GLuint key, void *data, void *userData) 2285{ 2286 struct gl_framebuffer *fb = (struct gl_framebuffer *) data; 2287 const struct cb_info *info = (struct cb_info *) userData; 2288 struct gl_context *ctx = info->ctx; 2289 const struct gl_texture_object *texObj = info->texObj; 2290 const GLuint level = info->level, face = info->face; 2291 2292 /* If this is a user-created FBO */ 2293 if (_mesa_is_user_fbo(fb)) { 2294 GLuint i; 2295 /* check if any of the FBO's attachments point to 'texObj' */ 2296 for (i = 0; i < BUFFER_COUNT; i++) { 2297 struct gl_renderbuffer_attachment *att = fb->Attachment + i; 2298 if (att->Type == GL_TEXTURE && 2299 att->Texture == texObj && 2300 att->TextureLevel == level && 2301 att->CubeMapFace == face) { 2302 ASSERT(_mesa_get_attachment_teximage(att)); 2303 /* Tell driver about the new renderbuffer texture */ 2304 ctx->Driver.RenderTexture(ctx, ctx->DrawBuffer, att); 2305 /* Mark fb status as indeterminate to force re-validation */ 2306 fb->_Status = 0; 2307 } 2308 } 2309 } 2310} 2311 2312 2313/** 2314 * When a texture image is specified we have to check if it's bound to 2315 * any framebuffer objects (render to texture) in order to detect changes 2316 * in size or format since that effects FBO completeness. 2317 * Any FBOs rendering into the texture must be re-validated. 2318 */ 2319void 2320_mesa_update_fbo_texture(struct gl_context *ctx, 2321 struct gl_texture_object *texObj, 2322 GLuint face, GLuint level) 2323{ 2324 /* Only check this texture if it's been marked as RenderToTexture */ 2325 if (texObj->_RenderToTexture) { 2326 struct cb_info info; 2327 info.ctx = ctx; 2328 info.texObj = texObj; 2329 info.level = level; 2330 info.face = face; 2331 _mesa_HashWalk(ctx->Shared->FrameBuffers, check_rtt_cb, &info); 2332 } 2333} 2334 2335 2336/** 2337 * If the texture object's GenerateMipmap flag is set and we've 2338 * changed the texture base level image, regenerate the rest of the 2339 * mipmap levels now. 2340 */ 2341static inline void 2342check_gen_mipmap(struct gl_context *ctx, GLenum target, 2343 struct gl_texture_object *texObj, GLint level) 2344{ 2345 ASSERT(target != GL_TEXTURE_CUBE_MAP); 2346 if (texObj->GenerateMipmap && 2347 level == texObj->BaseLevel && 2348 level < texObj->MaxLevel) { 2349 ASSERT(ctx->Driver.GenerateMipmap); 2350 ctx->Driver.GenerateMipmap(ctx, target, texObj); 2351 } 2352} 2353 2354 2355/** Debug helper: override the user-requested internal format */ 2356static GLenum 2357override_internal_format(GLenum internalFormat, GLint width, GLint height) 2358{ 2359#if 0 2360 if (internalFormat == GL_RGBA16F_ARB || 2361 internalFormat == GL_RGBA32F_ARB) { 2362 printf("Convert rgba float tex to int %d x %d\n", width, height); 2363 return GL_RGBA; 2364 } 2365 else if (internalFormat == GL_RGB16F_ARB || 2366 internalFormat == GL_RGB32F_ARB) { 2367 printf("Convert rgb float tex to int %d x %d\n", width, height); 2368 return GL_RGB; 2369 } 2370 else if (internalFormat == GL_LUMINANCE_ALPHA16F_ARB || 2371 internalFormat == GL_LUMINANCE_ALPHA32F_ARB) { 2372 printf("Convert luminance float tex to int %d x %d\n", width, height); 2373 return GL_LUMINANCE_ALPHA; 2374 } 2375 else if (internalFormat == GL_LUMINANCE16F_ARB || 2376 internalFormat == GL_LUMINANCE32F_ARB) { 2377 printf("Convert luminance float tex to int %d x %d\n", width, height); 2378 return GL_LUMINANCE; 2379 } 2380 else if (internalFormat == GL_ALPHA16F_ARB || 2381 internalFormat == GL_ALPHA32F_ARB) { 2382 printf("Convert luminance float tex to int %d x %d\n", width, height); 2383 return GL_ALPHA; 2384 } 2385 /* 2386 else if (internalFormat == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT) { 2387 internalFormat = GL_RGBA; 2388 } 2389 */ 2390 else { 2391 return internalFormat; 2392 } 2393#else 2394 return internalFormat; 2395#endif 2396} 2397 2398 2399/** 2400 * Choose the actual hardware format for a texture image. 2401 * Try to use the same format as the previous image level when possible. 2402 * Otherwise, ask the driver for the best format. 2403 * It's important to try to choose a consistant format for all levels 2404 * for efficient texture memory layout/allocation. In particular, this 2405 * comes up during automatic mipmap generation. 2406 */ 2407gl_format 2408_mesa_choose_texture_format(struct gl_context *ctx, 2409 struct gl_texture_object *texObj, 2410 GLenum target, GLint level, 2411 GLenum internalFormat, GLenum format, GLenum type) 2412{ 2413 gl_format f; 2414 2415 /* see if we've already chosen a format for the previous level */ 2416 if (level > 0) { 2417 struct gl_texture_image *prevImage = 2418 _mesa_select_tex_image(ctx, texObj, target, level - 1); 2419 /* See if the prev level is defined and has an internal format which 2420 * matches the new internal format. 2421 */ 2422 if (prevImage && 2423 prevImage->Width > 0 && 2424 prevImage->InternalFormat == internalFormat) { 2425 /* use the same format */ 2426 ASSERT(prevImage->TexFormat != MESA_FORMAT_NONE); 2427 return prevImage->TexFormat; 2428 } 2429 } 2430 2431 /* choose format from scratch */ 2432 f = ctx->Driver.ChooseTextureFormat(ctx, internalFormat, format, type); 2433 ASSERT(f != MESA_FORMAT_NONE); 2434 return f; 2435} 2436 2437/** 2438 * Adjust pixel unpack params and image dimensions to strip off the 2439 * one-pixel texture border. 2440 * 2441 * Gallium and intel don't support texture borders. They've seldem been used 2442 * and seldom been implemented correctly anyway. 2443 * 2444 * \param unpackNew returns the new pixel unpack parameters 2445 */ 2446static void 2447strip_texture_border(GLenum target, 2448 GLint *width, GLint *height, GLint *depth, 2449 const struct gl_pixelstore_attrib *unpack, 2450 struct gl_pixelstore_attrib *unpackNew) 2451{ 2452 assert(width); 2453 assert(height); 2454 assert(depth); 2455 2456 *unpackNew = *unpack; 2457 2458 if (unpackNew->RowLength == 0) 2459 unpackNew->RowLength = *width; 2460 2461 if (unpackNew->ImageHeight == 0) 2462 unpackNew->ImageHeight = *height; 2463 2464 assert(*width >= 3); 2465 unpackNew->SkipPixels++; /* skip the border */ 2466 *width = *width - 2; /* reduce the width by two border pixels */ 2467 2468 /* The min height of a texture with a border is 3 */ 2469 if (*height >= 3 && target != GL_TEXTURE_1D_ARRAY) { 2470 unpackNew->SkipRows++; /* skip the border */ 2471 *height = *height - 2; /* reduce the height by two border pixels */ 2472 } 2473 2474 if (*depth >= 3 && target != GL_TEXTURE_2D_ARRAY) { 2475 unpackNew->SkipImages++; /* skip the border */ 2476 *depth = *depth - 2; /* reduce the depth by two border pixels */ 2477 } 2478} 2479 2480/** 2481 * Common code to implement all the glTexImage1D/2D/3D functions. 2482 */ 2483static void 2484teximage(struct gl_context *ctx, GLuint dims, 2485 GLenum target, GLint level, GLint internalFormat, 2486 GLsizei width, GLsizei height, GLsizei depth, 2487 GLint border, GLenum format, GLenum type, 2488 const GLvoid *pixels) 2489{ 2490 GLboolean error; 2491 struct gl_pixelstore_attrib unpack_no_border; 2492 const struct gl_pixelstore_attrib *unpack = &ctx->Unpack; 2493 2494 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); 2495 2496 if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) 2497 _mesa_debug(ctx, "glTexImage%uD %s %d %s %d %d %d %d %s %s %p\n", 2498 dims, 2499 _mesa_lookup_enum_by_nr(target), level, 2500 _mesa_lookup_enum_by_nr(internalFormat), 2501 width, height, depth, border, 2502 _mesa_lookup_enum_by_nr(format), 2503 _mesa_lookup_enum_by_nr(type), pixels); 2504 2505 internalFormat = override_internal_format(internalFormat, width, height); 2506 2507 /* target error checking */ 2508 if (!legal_teximage_target(ctx, dims, target)) { 2509 _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage%uD(target=%s)", 2510 dims, _mesa_lookup_enum_by_nr(target)); 2511 return; 2512 } 2513 2514 /* general error checking */ 2515 error = texture_error_check(ctx, dims, target, level, internalFormat, 2516 format, type, width, height, depth, border); 2517 2518 if (_mesa_is_proxy_texture(target)) { 2519 /* Proxy texture: just clear or set state depending on error checking */ 2520 struct gl_texture_image *texImage = 2521 _mesa_get_proxy_tex_image(ctx, target, level); 2522 2523 if (error) { 2524 /* when error, clear all proxy texture image parameters */ 2525 if (texImage) 2526 clear_teximage_fields(texImage); 2527 } 2528 else { 2529 /* no error, set the tex image parameters */ 2530 struct gl_texture_object *texObj = 2531 _mesa_get_current_tex_object(ctx, target); 2532 gl_format texFormat = _mesa_choose_texture_format(ctx, texObj, 2533 target, level, 2534 internalFormat, 2535 format, type); 2536 2537 if (legal_texture_size(ctx, texFormat, width, height, depth)) { 2538 _mesa_init_teximage_fields(ctx, texImage, width, height, 2539 depth, border, internalFormat, 2540 texFormat); 2541 } 2542 else if (texImage) { 2543 clear_teximage_fields(texImage); 2544 } 2545 } 2546 } 2547 else { 2548 /* non-proxy target */ 2549 const GLuint face = _mesa_tex_target_to_face(target); 2550 struct gl_texture_object *texObj; 2551 struct gl_texture_image *texImage; 2552 2553 if (error) { 2554 return; /* error was recorded */ 2555 } 2556 2557 /* Allow a hardware driver to just strip out the border, to provide 2558 * reliable but slightly incorrect hardware rendering instead of 2559 * rarely-tested software fallback rendering. 2560 */ 2561 if (border && ctx->Const.StripTextureBorder) { 2562 strip_texture_border(target, &width, &height, &depth, unpack, 2563 &unpack_no_border); 2564 border = 0; 2565 unpack = &unpack_no_border; 2566 } 2567 2568 if (ctx->NewState & _NEW_PIXEL) 2569 _mesa_update_state(ctx); 2570 2571 texObj = _mesa_get_current_tex_object(ctx, target); 2572 2573 _mesa_lock_texture(ctx, texObj); 2574 { 2575 texImage = _mesa_get_tex_image(ctx, texObj, target, level); 2576 2577 if (!texImage) { 2578 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims); 2579 } 2580 else { 2581 gl_format texFormat; 2582 2583 ctx->Driver.FreeTextureImageBuffer(ctx, texImage); 2584 2585 texFormat = _mesa_choose_texture_format(ctx, texObj, target, level, 2586 internalFormat, format, 2587 type); 2588 2589 if (legal_texture_size(ctx, texFormat, width, height, depth)) { 2590 _mesa_init_teximage_fields(ctx, texImage, 2591 width, height, depth, 2592 border, internalFormat, texFormat); 2593 2594 /* Give the texture to the driver. <pixels> may be null. */ 2595 ctx->Driver.TexImage(ctx, dims, texImage, format, 2596 type, pixels, unpack); 2597 2598 check_gen_mipmap(ctx, target, texObj, level); 2599 2600 _mesa_update_fbo_texture(ctx, texObj, face, level); 2601 2602 _mesa_dirty_texobj(ctx, texObj, GL_TRUE); 2603 } 2604 else { 2605 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims); 2606 } 2607 } 2608 } 2609 _mesa_unlock_texture(ctx, texObj); 2610 } 2611} 2612 2613 2614/* 2615 * Called from the API. Note that width includes the border. 2616 */ 2617void GLAPIENTRY 2618_mesa_TexImage1D( GLenum target, GLint level, GLint internalFormat, 2619 GLsizei width, GLint border, GLenum format, 2620 GLenum type, const GLvoid *pixels ) 2621{ 2622 GET_CURRENT_CONTEXT(ctx); 2623 teximage(ctx, 1, target, level, internalFormat, width, 1, 1, 2624 border, format, type, pixels); 2625} 2626 2627 2628void GLAPIENTRY 2629_mesa_TexImage2D( GLenum target, GLint level, GLint internalFormat, 2630 GLsizei width, GLsizei height, GLint border, 2631 GLenum format, GLenum type, 2632 const GLvoid *pixels ) 2633{ 2634 GET_CURRENT_CONTEXT(ctx); 2635 teximage(ctx, 2, target, level, internalFormat, width, height, 1, 2636 border, format, type, pixels); 2637} 2638 2639 2640/* 2641 * Called by the API or display list executor. 2642 * Note that width and height include the border. 2643 */ 2644void GLAPIENTRY 2645_mesa_TexImage3D( GLenum target, GLint level, GLint internalFormat, 2646 GLsizei width, GLsizei height, GLsizei depth, 2647 GLint border, GLenum format, GLenum type, 2648 const GLvoid *pixels ) 2649{ 2650 GET_CURRENT_CONTEXT(ctx); 2651 teximage(ctx, 3, target, level, internalFormat, width, height, depth, 2652 border, format, type, pixels); 2653} 2654 2655 2656void GLAPIENTRY 2657_mesa_TexImage3DEXT( GLenum target, GLint level, GLenum internalFormat, 2658 GLsizei width, GLsizei height, GLsizei depth, 2659 GLint border, GLenum format, GLenum type, 2660 const GLvoid *pixels ) 2661{ 2662 _mesa_TexImage3D(target, level, (GLint) internalFormat, width, height, 2663 depth, border, format, type, pixels); 2664} 2665 2666 2667#if FEATURE_OES_EGL_image 2668void GLAPIENTRY 2669_mesa_EGLImageTargetTexture2DOES (GLenum target, GLeglImageOES image) 2670{ 2671 struct gl_texture_object *texObj; 2672 struct gl_texture_image *texImage; 2673 bool valid_target; 2674 GET_CURRENT_CONTEXT(ctx); 2675 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); 2676 2677 switch (target) { 2678 case GL_TEXTURE_2D: 2679 valid_target = ctx->Extensions.OES_EGL_image; 2680 break; 2681 case GL_TEXTURE_EXTERNAL_OES: 2682 valid_target = ctx->Extensions.OES_EGL_image_external; 2683 break; 2684 default: 2685 valid_target = false; 2686 break; 2687 } 2688 2689 if (!valid_target) { 2690 _mesa_error(ctx, GL_INVALID_ENUM, 2691 "glEGLImageTargetTexture2D(target=%d)", target); 2692 return; 2693 } 2694 2695 if (ctx->NewState & _NEW_PIXEL) 2696 _mesa_update_state(ctx); 2697 2698 texObj = _mesa_get_current_tex_object(ctx, target); 2699 _mesa_lock_texture(ctx, texObj); 2700 2701 if (texObj->Immutable) { 2702 _mesa_error(ctx, GL_INVALID_OPERATION, 2703 "glEGLImageTargetTexture2D(texture is immutable)"); 2704 _mesa_unlock_texture(ctx, texObj); 2705 return; 2706 } 2707 2708 texImage = _mesa_get_tex_image(ctx, texObj, target, 0); 2709 if (!texImage) { 2710 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glEGLImageTargetTexture2D"); 2711 } else { 2712 ctx->Driver.FreeTextureImageBuffer(ctx, texImage); 2713 2714 ctx->Driver.EGLImageTargetTexture2D(ctx, target, 2715 texObj, texImage, image); 2716 2717 _mesa_dirty_texobj(ctx, texObj, GL_TRUE); 2718 } 2719 _mesa_unlock_texture(ctx, texObj); 2720 2721} 2722#endif 2723 2724 2725 2726/** 2727 * Implement all the glTexSubImage1/2/3D() functions. 2728 */ 2729static void 2730texsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level, 2731 GLint xoffset, GLint yoffset, GLint zoffset, 2732 GLsizei width, GLsizei height, GLsizei depth, 2733 GLenum format, GLenum type, const GLvoid *pixels ) 2734{ 2735 struct gl_texture_object *texObj; 2736 struct gl_texture_image *texImage; 2737 2738 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); 2739 2740 if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) 2741 _mesa_debug(ctx, "glTexSubImage%uD %s %d %d %d %d %d %d %d %s %s %p\n", 2742 dims, 2743 _mesa_lookup_enum_by_nr(target), level, 2744 xoffset, yoffset, zoffset, width, height, depth, 2745 _mesa_lookup_enum_by_nr(format), 2746 _mesa_lookup_enum_by_nr(type), pixels); 2747 2748 /* check target (proxies not allowed) */ 2749 if (!legal_texsubimage_target(ctx, dims, target)) { 2750 _mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage%uD(target=%s)", 2751 dims, _mesa_lookup_enum_by_nr(target)); 2752 return; 2753 } 2754 2755 if (ctx->NewState & _NEW_PIXEL) 2756 _mesa_update_state(ctx); 2757 2758 if (subtexture_error_check(ctx, dims, target, level, xoffset, yoffset, zoffset, 2759 width, height, depth, format, type)) { 2760 return; /* error was detected */ 2761 } 2762 2763 texObj = _mesa_get_current_tex_object(ctx, target); 2764 2765 _mesa_lock_texture(ctx, texObj); 2766 { 2767 texImage = _mesa_select_tex_image(ctx, texObj, target, level); 2768 2769 if (subtexture_error_check2(ctx, dims, target, level, 2770 xoffset, yoffset, zoffset, 2771 width, height, depth, 2772 format, type, texImage)) { 2773 /* error was recorded */ 2774 } 2775 else if (width > 0 && height > 0 && depth > 0) { 2776 /* If we have a border, offset=-1 is legal. Bias by border width. */ 2777 switch (dims) { 2778 case 3: 2779 if (target != GL_TEXTURE_2D_ARRAY) 2780 zoffset += texImage->Border; 2781 /* fall-through */ 2782 case 2: 2783 if (target != GL_TEXTURE_1D_ARRAY) 2784 yoffset += texImage->Border; 2785 /* fall-through */ 2786 case 1: 2787 xoffset += texImage->Border; 2788 } 2789 2790 ctx->Driver.TexSubImage(ctx, dims, texImage, 2791 xoffset, yoffset, zoffset, 2792 width, height, depth, 2793 format, type, pixels, &ctx->Unpack); 2794 2795 check_gen_mipmap(ctx, target, texObj, level); 2796 2797 ctx->NewState |= _NEW_TEXTURE; 2798 } 2799 } 2800 _mesa_unlock_texture(ctx, texObj); 2801} 2802 2803 2804void GLAPIENTRY 2805_mesa_TexSubImage1D( GLenum target, GLint level, 2806 GLint xoffset, GLsizei width, 2807 GLenum format, GLenum type, 2808 const GLvoid *pixels ) 2809{ 2810 GET_CURRENT_CONTEXT(ctx); 2811 texsubimage(ctx, 1, target, level, 2812 xoffset, 0, 0, 2813 width, 1, 1, 2814 format, type, pixels); 2815} 2816 2817 2818void GLAPIENTRY 2819_mesa_TexSubImage2D( GLenum target, GLint level, 2820 GLint xoffset, GLint yoffset, 2821 GLsizei width, GLsizei height, 2822 GLenum format, GLenum type, 2823 const GLvoid *pixels ) 2824{ 2825 GET_CURRENT_CONTEXT(ctx); 2826 texsubimage(ctx, 2, target, level, 2827 xoffset, yoffset, 0, 2828 width, height, 1, 2829 format, type, pixels); 2830} 2831 2832 2833 2834void GLAPIENTRY 2835_mesa_TexSubImage3D( GLenum target, GLint level, 2836 GLint xoffset, GLint yoffset, GLint zoffset, 2837 GLsizei width, GLsizei height, GLsizei depth, 2838 GLenum format, GLenum type, 2839 const GLvoid *pixels ) 2840{ 2841 GET_CURRENT_CONTEXT(ctx); 2842 texsubimage(ctx, 3, target, level, 2843 xoffset, yoffset, zoffset, 2844 width, height, depth, 2845 format, type, pixels); 2846} 2847 2848 2849 2850/** 2851 * For glCopyTexSubImage, return the source renderbuffer to copy texel data 2852 * from. This depends on whether the texture contains color or depth values. 2853 */ 2854static struct gl_renderbuffer * 2855get_copy_tex_image_source(struct gl_context *ctx, gl_format texFormat) 2856{ 2857 if (_mesa_get_format_bits(texFormat, GL_DEPTH_BITS) > 0) { 2858 /* reading from depth/stencil buffer */ 2859 return ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Renderbuffer; 2860 } 2861 else { 2862 /* copying from color buffer */ 2863 return ctx->ReadBuffer->_ColorReadBuffer; 2864 } 2865} 2866 2867 2868 2869/** 2870 * Implement the glCopyTexImage1/2D() functions. 2871 */ 2872static void 2873copyteximage(struct gl_context *ctx, GLuint dims, 2874 GLenum target, GLint level, GLenum internalFormat, 2875 GLint x, GLint y, GLsizei width, GLsizei height, GLint border ) 2876{ 2877 struct gl_texture_object *texObj; 2878 struct gl_texture_image *texImage; 2879 const GLuint face = _mesa_tex_target_to_face(target); 2880 2881 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); 2882 2883 if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) 2884 _mesa_debug(ctx, "glCopyTexImage%uD %s %d %s %d %d %d %d %d\n", 2885 dims, 2886 _mesa_lookup_enum_by_nr(target), level, 2887 _mesa_lookup_enum_by_nr(internalFormat), 2888 x, y, width, height, border); 2889 2890 if (ctx->NewState & NEW_COPY_TEX_STATE) 2891 _mesa_update_state(ctx); 2892 2893 if (copytexture_error_check(ctx, dims, target, level, internalFormat, 2894 width, height, border)) 2895 return; 2896 2897 texObj = _mesa_get_current_tex_object(ctx, target); 2898 2899 if (border && ctx->Const.StripTextureBorder) { 2900 x += border; 2901 width -= border * 2; 2902 if (dims == 2) { 2903 y += border; 2904 height -= border * 2; 2905 } 2906 border = 0; 2907 } 2908 2909 _mesa_lock_texture(ctx, texObj); 2910 { 2911 texImage = _mesa_get_tex_image(ctx, texObj, target, level); 2912 2913 if (!texImage) { 2914 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims); 2915 } 2916 else { 2917 /* choose actual hw format */ 2918 gl_format texFormat = _mesa_choose_texture_format(ctx, texObj, 2919 target, level, 2920 internalFormat, 2921 GL_NONE, GL_NONE); 2922 2923 if (legal_texture_size(ctx, texFormat, width, height, 1)) { 2924 GLint srcX = x, srcY = y, dstX = 0, dstY = 0, dstZ = 0; 2925 2926 /* Free old texture image */ 2927 ctx->Driver.FreeTextureImageBuffer(ctx, texImage); 2928 2929 _mesa_init_teximage_fields(ctx, texImage, width, height, 1, 2930 border, internalFormat, texFormat); 2931 2932 /* Allocate texture memory (no pixel data yet) */ 2933 ctx->Driver.TexImage(ctx, dims, texImage, 2934 GL_NONE, GL_NONE, 2935 NULL, &ctx->Unpack); 2936 2937 if (_mesa_clip_copytexsubimage(ctx, &dstX, &dstY, &srcX, &srcY, 2938 &width, &height)) { 2939 struct gl_renderbuffer *srcRb = 2940 get_copy_tex_image_source(ctx, texImage->TexFormat); 2941 2942 ctx->Driver.CopyTexSubImage(ctx, dims, texImage, dstX, dstY, dstZ, 2943 srcRb, srcX, srcY, width, height); 2944 } 2945 2946 check_gen_mipmap(ctx, target, texObj, level); 2947 2948 _mesa_update_fbo_texture(ctx, texObj, face, level); 2949 2950 _mesa_dirty_texobj(ctx, texObj, GL_TRUE); 2951 } 2952 else { 2953 /* probably too large of image */ 2954 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims); 2955 } 2956 } 2957 } 2958 _mesa_unlock_texture(ctx, texObj); 2959} 2960 2961 2962 2963void GLAPIENTRY 2964_mesa_CopyTexImage1D( GLenum target, GLint level, 2965 GLenum internalFormat, 2966 GLint x, GLint y, 2967 GLsizei width, GLint border ) 2968{ 2969 GET_CURRENT_CONTEXT(ctx); 2970 copyteximage(ctx, 1, target, level, internalFormat, x, y, width, 1, border); 2971} 2972 2973 2974 2975void GLAPIENTRY 2976_mesa_CopyTexImage2D( GLenum target, GLint level, GLenum internalFormat, 2977 GLint x, GLint y, GLsizei width, GLsizei height, 2978 GLint border ) 2979{ 2980 GET_CURRENT_CONTEXT(ctx); 2981 copyteximage(ctx, 2, target, level, internalFormat, 2982 x, y, width, height, border); 2983} 2984 2985 2986 2987/** 2988 * Implementation for glCopyTexSubImage1/2/3D() functions. 2989 */ 2990static void 2991copytexsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level, 2992 GLint xoffset, GLint yoffset, GLint zoffset, 2993 GLint x, GLint y, GLsizei width, GLsizei height) 2994{ 2995 struct gl_texture_object *texObj; 2996 struct gl_texture_image *texImage; 2997 2998 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); 2999 3000 if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) 3001 _mesa_debug(ctx, "glCopyTexSubImage%uD %s %d %d %d %d %d %d %d %d\n", 3002 dims, 3003 _mesa_lookup_enum_by_nr(target), 3004 level, xoffset, yoffset, zoffset, x, y, width, height); 3005 3006 if (ctx->NewState & NEW_COPY_TEX_STATE) 3007 _mesa_update_state(ctx); 3008 3009 if (copytexsubimage_error_check1(ctx, dims, target, level)) 3010 return; 3011 3012 texObj = _mesa_get_current_tex_object(ctx, target); 3013 3014 _mesa_lock_texture(ctx, texObj); 3015 { 3016 texImage = _mesa_select_tex_image(ctx, texObj, target, level); 3017 3018 if (copytexsubimage_error_check2(ctx, dims, target, level, xoffset, yoffset, 3019 zoffset, width, height, texImage)) { 3020 /* error was recored */ 3021 } 3022 else { 3023 /* If we have a border, offset=-1 is legal. Bias by border width. */ 3024 switch (dims) { 3025 case 3: 3026 if (target != GL_TEXTURE_2D_ARRAY) 3027 zoffset += texImage->Border; 3028 /* fall-through */ 3029 case 2: 3030 if (target != GL_TEXTURE_1D_ARRAY) 3031 yoffset += texImage->Border; 3032 /* fall-through */ 3033 case 1: 3034 xoffset += texImage->Border; 3035 } 3036 3037 if (_mesa_clip_copytexsubimage(ctx, &xoffset, &yoffset, &x, &y, 3038 &width, &height)) { 3039 struct gl_renderbuffer *srcRb = 3040 get_copy_tex_image_source(ctx, texImage->TexFormat); 3041 3042 ctx->Driver.CopyTexSubImage(ctx, dims, texImage, 3043 xoffset, yoffset, zoffset, 3044 srcRb, x, y, width, height); 3045 3046 check_gen_mipmap(ctx, target, texObj, level); 3047 3048 ctx->NewState |= _NEW_TEXTURE; 3049 } 3050 } 3051 } 3052 _mesa_unlock_texture(ctx, texObj); 3053} 3054 3055 3056void GLAPIENTRY 3057_mesa_CopyTexSubImage1D( GLenum target, GLint level, 3058 GLint xoffset, GLint x, GLint y, GLsizei width ) 3059{ 3060 GET_CURRENT_CONTEXT(ctx); 3061 copytexsubimage(ctx, 1, target, level, xoffset, 0, 0, x, y, width, 1); 3062} 3063 3064 3065 3066void GLAPIENTRY 3067_mesa_CopyTexSubImage2D( GLenum target, GLint level, 3068 GLint xoffset, GLint yoffset, 3069 GLint x, GLint y, GLsizei width, GLsizei height ) 3070{ 3071 GET_CURRENT_CONTEXT(ctx); 3072 copytexsubimage(ctx, 2, target, level, xoffset, yoffset, 0, x, y, 3073 width, height); 3074} 3075 3076 3077 3078void GLAPIENTRY 3079_mesa_CopyTexSubImage3D( GLenum target, GLint level, 3080 GLint xoffset, GLint yoffset, GLint zoffset, 3081 GLint x, GLint y, GLsizei width, GLsizei height ) 3082{ 3083 GET_CURRENT_CONTEXT(ctx); 3084 copytexsubimage(ctx, 3, target, level, xoffset, yoffset, zoffset, 3085 x, y, width, height); 3086} 3087 3088 3089 3090 3091/**********************************************************************/ 3092/****** Compressed Textures ******/ 3093/**********************************************************************/ 3094 3095 3096/** 3097 * Return expected size of a compressed texture. 3098 */ 3099static GLuint 3100compressed_tex_size(GLsizei width, GLsizei height, GLsizei depth, 3101 GLenum glformat) 3102{ 3103 gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat); 3104 return _mesa_format_image_size(mesaFormat, width, height, depth); 3105} 3106 3107 3108/* 3109 * Return compressed texture block size, in pixels. 3110 */ 3111static void 3112get_compressed_block_size(GLenum glformat, GLuint *bw, GLuint *bh) 3113{ 3114 gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat); 3115 _mesa_get_format_block_size(mesaFormat, bw, bh); 3116} 3117 3118 3119/** 3120 * Error checking for glCompressedTexImage[123]D(). 3121 * \param reason returns reason for error, if any 3122 * \return error code or GL_NO_ERROR. 3123 */ 3124static GLenum 3125compressed_texture_error_check(struct gl_context *ctx, GLint dimensions, 3126 GLenum target, GLint level, 3127 GLenum internalFormat, GLsizei width, 3128 GLsizei height, GLsizei depth, GLint border, 3129 GLsizei imageSize, char **reason) 3130{ 3131 const GLenum proxyTarget = get_proxy_target(target); 3132 const GLint maxLevels = _mesa_max_texture_levels(ctx, target); 3133 GLint expectedSize; 3134 GLenum choose_format; 3135 GLenum choose_type; 3136 GLenum proxy_format; 3137 3138 *reason = ""; /* no error */ 3139 3140 if (!target_can_be_compressed(ctx, target, internalFormat)) { 3141 *reason = "target"; 3142 return GL_INVALID_ENUM; 3143 } 3144 3145 /* This will detect any invalid internalFormat value */ 3146 if (!_mesa_is_compressed_format(ctx, internalFormat)) { 3147 *reason = "internalFormat"; 3148 return GL_INVALID_ENUM; 3149 } 3150 3151 switch (internalFormat) { 3152#if FEATURE_ES 3153 case GL_PALETTE4_RGB8_OES: 3154 case GL_PALETTE4_RGBA8_OES: 3155 case GL_PALETTE4_R5_G6_B5_OES: 3156 case GL_PALETTE4_RGBA4_OES: 3157 case GL_PALETTE4_RGB5_A1_OES: 3158 case GL_PALETTE8_RGB8_OES: 3159 case GL_PALETTE8_RGBA8_OES: 3160 case GL_PALETTE8_R5_G6_B5_OES: 3161 case GL_PALETTE8_RGBA4_OES: 3162 case GL_PALETTE8_RGB5_A1_OES: 3163 _mesa_cpal_compressed_format_type(internalFormat, &choose_format, 3164 &choose_type); 3165 proxy_format = choose_format; 3166 3167 /* check level */ 3168 if (level > 0 || level < -maxLevels) { 3169 *reason = "level"; 3170 return GL_INVALID_VALUE; 3171 } 3172 3173 if (dimensions != 2) { 3174 *reason = "compressed paletted textures must be 2D"; 3175 return GL_INVALID_OPERATION; 3176 } 3177 3178 /* Figure out the expected texture size (in bytes). This will be 3179 * checked against the actual size later. 3180 */ 3181 expectedSize = _mesa_cpal_compressed_size(level, internalFormat, 3182 width, height); 3183 3184 /* This is for the benefit of the TestProxyTexImage below. It expects 3185 * level to be non-negative. OES_compressed_paletted_texture uses a 3186 * weird mechanism where the level specified to glCompressedTexImage2D 3187 * is -(n-1) number of levels in the texture, and the data specifies the 3188 * complete mipmap stack. This is done to ensure the palette is the 3189 * same for all levels. 3190 */ 3191 level = -level; 3192 break; 3193#endif 3194 3195 default: 3196 choose_format = GL_NONE; 3197 choose_type = GL_NONE; 3198 proxy_format = internalFormat; 3199 3200 /* check level */ 3201 if (level < 0 || level >= maxLevels) { 3202 *reason = "level"; 3203 return GL_INVALID_VALUE; 3204 } 3205 3206 /* Figure out the expected texture size (in bytes). This will be 3207 * checked against the actual size later. 3208 */ 3209 expectedSize = compressed_tex_size(width, height, depth, internalFormat); 3210 break; 3211 } 3212 3213 /* This should really never fail */ 3214 if (_mesa_base_tex_format(ctx, internalFormat) < 0) { 3215 *reason = "internalFormat"; 3216 return GL_INVALID_ENUM; 3217 } 3218 3219 /* No compressed formats support borders at this time */ 3220 if (border != 0) { 3221 *reason = "border != 0"; 3222 return GL_INVALID_VALUE; 3223 } 3224 3225 /* For cube map, width must equal height */ 3226 if (_mesa_is_cube_face(target) && width != height) { 3227 *reason = "width != height"; 3228 return GL_INVALID_VALUE; 3229 } 3230 3231 /* check image size against compression block size */ 3232 { 3233 gl_format texFormat = 3234 ctx->Driver.ChooseTextureFormat(ctx, proxy_format, 3235 choose_format, choose_type); 3236 GLuint bw, bh; 3237 3238 _mesa_get_format_block_size(texFormat, &bw, &bh); 3239 if ((width > bw && width % bw > 0) || 3240 (height > bh && height % bh > 0)) { 3241 /* 3242 * Per GL_ARB_texture_compression: GL_INVALID_OPERATION is 3243 * generated [...] if any parameter combinations are not 3244 * supported by the specific compressed internal format. 3245 */ 3246 *reason = "invalid width or height for compression format"; 3247 return GL_INVALID_OPERATION; 3248 } 3249 } 3250 3251 /* check image sizes */ 3252 if (!ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level, 3253 proxy_format, choose_format, 3254 choose_type, 3255 width, height, depth, border)) { 3256 /* See error comment above */ 3257 *reason = "invalid width, height or format"; 3258 return GL_INVALID_OPERATION; 3259 } 3260 3261 /* check image size in bytes */ 3262 if (expectedSize != imageSize) { 3263 /* Per GL_ARB_texture_compression: GL_INVALID_VALUE is generated [...] 3264 * if <imageSize> is not consistent with the format, dimensions, and 3265 * contents of the specified image. 3266 */ 3267 *reason = "imageSize inconsistant with width/height/format"; 3268 return GL_INVALID_VALUE; 3269 } 3270 3271 if (!mutable_tex_object(ctx, target)) { 3272 *reason = "immutable texture"; 3273 return GL_INVALID_OPERATION; 3274 } 3275 3276 return GL_NO_ERROR; 3277} 3278 3279 3280/** 3281 * Error checking for glCompressedTexSubImage[123]D(). 3282 * \warning There are some bad assumptions here about the size of compressed 3283 * texture tiles (multiple of 4) used to test the validity of the 3284 * offset and size parameters. 3285 * \return error code or GL_NO_ERROR. 3286 */ 3287static GLenum 3288compressed_subtexture_error_check(struct gl_context *ctx, GLint dimensions, 3289 GLenum target, GLint level, 3290 GLint xoffset, GLint yoffset, GLint zoffset, 3291 GLsizei width, GLsizei height, GLsizei depth, 3292 GLenum format, GLsizei imageSize) 3293{ 3294 GLint expectedSize, maxLevels = 0, maxTextureSize; 3295 GLuint bw, bh; 3296 (void) zoffset; 3297 3298 if (dimensions == 1) { 3299 /* 1D compressed textures not allowed */ 3300 return GL_INVALID_ENUM; 3301 } 3302 else if (dimensions == 2) { 3303 if (target == GL_PROXY_TEXTURE_2D) { 3304 maxLevels = ctx->Const.MaxTextureLevels; 3305 } 3306 else if (target == GL_TEXTURE_2D) { 3307 maxLevels = ctx->Const.MaxTextureLevels; 3308 } 3309 else if (target == GL_PROXY_TEXTURE_CUBE_MAP_ARB) { 3310 if (!ctx->Extensions.ARB_texture_cube_map) 3311 return GL_INVALID_ENUM; /*target*/ 3312 maxLevels = ctx->Const.MaxCubeTextureLevels; 3313 } 3314 else if (_mesa_is_cube_face(target)) { 3315 if (!ctx->Extensions.ARB_texture_cube_map) 3316 return GL_INVALID_ENUM; /*target*/ 3317 maxLevels = ctx->Const.MaxCubeTextureLevels; 3318 } 3319 else { 3320 return GL_INVALID_ENUM; /*target*/ 3321 } 3322 } 3323 else if (dimensions == 3) { 3324 /* 3D compressed textures not allowed */ 3325 return GL_INVALID_ENUM; 3326 } 3327 3328 maxTextureSize = 1 << (maxLevels - 1); 3329 3330 /* this will catch any invalid compressed format token */ 3331 if (!_mesa_is_compressed_format(ctx, format)) 3332 return GL_INVALID_ENUM; 3333 3334 if (width < 1 || width > maxTextureSize) 3335 return GL_INVALID_VALUE; 3336 3337 if ((height < 1 || height > maxTextureSize) 3338 && dimensions > 1) 3339 return GL_INVALID_VALUE; 3340 3341 if (level < 0 || level >= maxLevels) 3342 return GL_INVALID_VALUE; 3343 3344 /* 3345 * do checks which depend on compression block size 3346 */ 3347 get_compressed_block_size(format, &bw, &bh); 3348 3349 if ((xoffset % bw != 0) || (yoffset % bh != 0)) 3350 return GL_INVALID_VALUE; 3351 3352 if ((width % bw != 0) && width != 2 && width != 1) 3353 return GL_INVALID_VALUE; 3354 3355 if ((height % bh != 0) && height != 2 && height != 1) 3356 return GL_INVALID_VALUE; 3357 3358 expectedSize = compressed_tex_size(width, height, depth, format); 3359 if (expectedSize != imageSize) 3360 return GL_INVALID_VALUE; 3361 3362 return GL_NO_ERROR; 3363} 3364 3365 3366/** 3367 * Do second part of glCompressedTexSubImage error checking. 3368 * \return GL_TRUE if error found, GL_FALSE otherwise. 3369 */ 3370static GLboolean 3371compressed_subtexture_error_check2(struct gl_context *ctx, GLuint dims, 3372 GLsizei width, GLsizei height, 3373 GLsizei depth, GLenum format, 3374 struct gl_texture_image *texImage) 3375{ 3376 3377 if ((GLint) format != texImage->InternalFormat) { 3378 _mesa_error(ctx, GL_INVALID_OPERATION, 3379 "glCompressedTexSubImage%uD(format=0x%x)", dims, format); 3380 return GL_TRUE; 3381 } 3382 3383 if (compressedteximage_only_format(ctx, format)) { 3384 _mesa_error(ctx, GL_INVALID_OPERATION, 3385 "glCompressedTexSubImage%uD(format=0x%x cannot be updated)" 3386 , dims, format); 3387 return GL_TRUE; 3388 } 3389 3390 if (((width == 1 || width == 2) && 3391 width != (GLsizei) texImage->Width) || 3392 (width > (GLsizei) texImage->Width)) { 3393 _mesa_error(ctx, GL_INVALID_VALUE, 3394 "glCompressedTexSubImage%uD(width=%d)", dims, width); 3395 return GL_TRUE; 3396 } 3397 3398 if (dims >= 2) { 3399 if (((height == 1 || height == 2) && 3400 height != (GLsizei) texImage->Height) || 3401 (height > (GLsizei) texImage->Height)) { 3402 _mesa_error(ctx, GL_INVALID_VALUE, 3403 "glCompressedTexSubImage%uD(height=%d)", dims, height); 3404 return GL_TRUE; 3405 } 3406 } 3407 3408 if (dims >= 3) { 3409 if (((depth == 1 || depth == 2) && 3410 depth != (GLsizei) texImage->Depth) || 3411 (depth > (GLsizei) texImage->Depth)) { 3412 _mesa_error(ctx, GL_INVALID_VALUE, 3413 "glCompressedTexSubImage%uD(depth=%d)", dims, depth); 3414 return GL_TRUE; 3415 } 3416 } 3417 3418 return GL_FALSE; 3419} 3420 3421 3422/** 3423 * Implementation of the glCompressedTexImage1/2/3D() functions. 3424 */ 3425static void 3426compressedteximage(struct gl_context *ctx, GLuint dims, 3427 GLenum target, GLint level, 3428 GLenum internalFormat, GLsizei width, 3429 GLsizei height, GLsizei depth, GLint border, 3430 GLsizei imageSize, const GLvoid *data) 3431{ 3432 GLenum error; 3433 char *reason = ""; 3434 3435 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); 3436 3437 if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) 3438 _mesa_debug(ctx, 3439 "glCompressedTexImage%uDARB %s %d %s %d %d %d %d %d %p\n", 3440 dims, 3441 _mesa_lookup_enum_by_nr(target), level, 3442 _mesa_lookup_enum_by_nr(internalFormat), 3443 width, height, depth, border, imageSize, data); 3444 3445 /* check target */ 3446 if (!legal_teximage_target(ctx, dims, target)) { 3447 _mesa_error(ctx, GL_INVALID_ENUM, "glCompressedTexImage%uD(target=%s)", 3448 dims, _mesa_lookup_enum_by_nr(target)); 3449 return; 3450 } 3451 3452 error = compressed_texture_error_check(ctx, dims, target, level, 3453 internalFormat, width, height, depth, 3454 border, imageSize, &reason); 3455 3456#if FEATURE_ES 3457 /* XXX this is kind of a hack */ 3458 if (!error && dims == 2) { 3459 switch (internalFormat) { 3460 case GL_PALETTE4_RGB8_OES: 3461 case GL_PALETTE4_RGBA8_OES: 3462 case GL_PALETTE4_R5_G6_B5_OES: 3463 case GL_PALETTE4_RGBA4_OES: 3464 case GL_PALETTE4_RGB5_A1_OES: 3465 case GL_PALETTE8_RGB8_OES: 3466 case GL_PALETTE8_RGBA8_OES: 3467 case GL_PALETTE8_R5_G6_B5_OES: 3468 case GL_PALETTE8_RGBA4_OES: 3469 case GL_PALETTE8_RGB5_A1_OES: 3470 _mesa_cpal_compressed_teximage2d(target, level, internalFormat, 3471 width, height, imageSize, data); 3472 return; 3473 } 3474 } 3475#endif 3476 3477 if (_mesa_is_proxy_texture(target)) { 3478 /* Proxy texture: just check for errors and update proxy state */ 3479 struct gl_texture_image *texImage; 3480 3481 if (!error) { 3482 struct gl_texture_object *texObj = 3483 _mesa_get_current_tex_object(ctx, target); 3484 gl_format texFormat = 3485 _mesa_choose_texture_format(ctx, texObj, target, level, 3486 internalFormat, GL_NONE, GL_NONE); 3487 if (!legal_texture_size(ctx, texFormat, width, height, depth)) { 3488 error = GL_OUT_OF_MEMORY; 3489 } 3490 } 3491 3492 texImage = _mesa_get_proxy_tex_image(ctx, target, level); 3493 if (texImage) { 3494 if (error) { 3495 /* if error, clear all proxy texture image parameters */ 3496 clear_teximage_fields(texImage); 3497 } 3498 else { 3499 /* no error: store the teximage parameters */ 3500 _mesa_init_teximage_fields(ctx, texImage, width, height, 3501 depth, border, internalFormat, 3502 MESA_FORMAT_NONE); 3503 } 3504 } 3505 } 3506 else { 3507 /* non-proxy target */ 3508 struct gl_texture_object *texObj; 3509 struct gl_texture_image *texImage; 3510 3511 if (error) { 3512 _mesa_error(ctx, error, "glCompressedTexImage%uD(%s)", dims, reason); 3513 return; 3514 } 3515 3516 texObj = _mesa_get_current_tex_object(ctx, target); 3517 3518 _mesa_lock_texture(ctx, texObj); 3519 { 3520 texImage = _mesa_get_tex_image(ctx, texObj, target, level); 3521 if (!texImage) { 3522 _mesa_error(ctx, GL_OUT_OF_MEMORY, 3523 "glCompressedTexImage%uD", dims); 3524 } 3525 else { 3526 gl_format texFormat; 3527 3528 ctx->Driver.FreeTextureImageBuffer(ctx, texImage); 3529 3530 texFormat = _mesa_choose_texture_format(ctx, texObj, target, level, 3531 internalFormat, GL_NONE, 3532 GL_NONE); 3533 3534 if (legal_texture_size(ctx, texFormat, width, height, depth)) { 3535 _mesa_init_teximage_fields(ctx, texImage, 3536 width, height, depth, 3537 border, internalFormat, texFormat); 3538 3539 ctx->Driver.CompressedTexImage(ctx, dims, texImage, imageSize, 3540 data); 3541 3542 check_gen_mipmap(ctx, target, texObj, level); 3543 3544 _mesa_dirty_texobj(ctx, texObj, GL_TRUE); 3545 } 3546 else { 3547 _mesa_error(ctx, GL_OUT_OF_MEMORY, 3548 "glCompressedTexImage%uD", dims); 3549 } 3550 } 3551 } 3552 _mesa_unlock_texture(ctx, texObj); 3553 } 3554} 3555 3556 3557void GLAPIENTRY 3558_mesa_CompressedTexImage1DARB(GLenum target, GLint level, 3559 GLenum internalFormat, GLsizei width, 3560 GLint border, GLsizei imageSize, 3561 const GLvoid *data) 3562{ 3563 GET_CURRENT_CONTEXT(ctx); 3564 compressedteximage(ctx, 1, target, level, internalFormat, 3565 width, 1, 1, border, imageSize, data); 3566} 3567 3568 3569void GLAPIENTRY 3570_mesa_CompressedTexImage2DARB(GLenum target, GLint level, 3571 GLenum internalFormat, GLsizei width, 3572 GLsizei height, GLint border, GLsizei imageSize, 3573 const GLvoid *data) 3574{ 3575 GET_CURRENT_CONTEXT(ctx); 3576 compressedteximage(ctx, 2, target, level, internalFormat, 3577 width, height, 1, border, imageSize, data); 3578} 3579 3580 3581void GLAPIENTRY 3582_mesa_CompressedTexImage3DARB(GLenum target, GLint level, 3583 GLenum internalFormat, GLsizei width, 3584 GLsizei height, GLsizei depth, GLint border, 3585 GLsizei imageSize, const GLvoid *data) 3586{ 3587 GET_CURRENT_CONTEXT(ctx); 3588 compressedteximage(ctx, 3, target, level, internalFormat, 3589 width, height, depth, border, imageSize, data); 3590} 3591 3592 3593/** 3594 * Common helper for glCompressedTexSubImage1/2/3D(). 3595 */ 3596static void 3597compressed_tex_sub_image(GLuint dims, GLenum target, GLint level, 3598 GLint xoffset, GLint yoffset, GLint zoffset, 3599 GLsizei width, GLsizei height, GLsizei depth, 3600 GLenum format, GLsizei imageSize, const GLvoid *data) 3601{ 3602 struct gl_texture_object *texObj; 3603 struct gl_texture_image *texImage; 3604 GLenum error; 3605 GET_CURRENT_CONTEXT(ctx); 3606 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); 3607 3608 error = compressed_subtexture_error_check(ctx, dims, target, level, 3609 xoffset, 0, 0, /* pos */ 3610 width, height, depth, /* size */ 3611 format, imageSize); 3612 if (error) { 3613 _mesa_error(ctx, error, "glCompressedTexSubImage%uD", dims); 3614 return; 3615 } 3616 3617 texObj = _mesa_get_current_tex_object(ctx, target); 3618 3619 _mesa_lock_texture(ctx, texObj); 3620 { 3621 texImage = _mesa_select_tex_image(ctx, texObj, target, level); 3622 assert(texImage); 3623 3624 if (compressed_subtexture_error_check2(ctx, dims, width, height, depth, 3625 format, texImage)) { 3626 /* error was recorded */ 3627 } 3628 else if (width > 0 && height > 0 && depth > 0) { 3629 ctx->Driver.CompressedTexSubImage(ctx, dims, texImage, 3630 xoffset, yoffset, zoffset, 3631 width, height, depth, 3632 format, imageSize, data); 3633 3634 check_gen_mipmap(ctx, target, texObj, level); 3635 3636 ctx->NewState |= _NEW_TEXTURE; 3637 } 3638 } 3639 _mesa_unlock_texture(ctx, texObj); 3640} 3641 3642 3643void GLAPIENTRY 3644_mesa_CompressedTexSubImage1DARB(GLenum target, GLint level, GLint xoffset, 3645 GLsizei width, GLenum format, 3646 GLsizei imageSize, const GLvoid *data) 3647{ 3648 compressed_tex_sub_image(1, target, level, xoffset, 0, 0, width, 1, 1, 3649 format, imageSize, data); 3650} 3651 3652 3653void GLAPIENTRY 3654_mesa_CompressedTexSubImage2DARB(GLenum target, GLint level, GLint xoffset, 3655 GLint yoffset, GLsizei width, GLsizei height, 3656 GLenum format, GLsizei imageSize, 3657 const GLvoid *data) 3658{ 3659 compressed_tex_sub_image(2, target, level, xoffset, yoffset, 0, 3660 width, height, 1, format, imageSize, data); 3661} 3662 3663 3664void GLAPIENTRY 3665_mesa_CompressedTexSubImage3DARB(GLenum target, GLint level, GLint xoffset, 3666 GLint yoffset, GLint zoffset, GLsizei width, 3667 GLsizei height, GLsizei depth, GLenum format, 3668 GLsizei imageSize, const GLvoid *data) 3669{ 3670 compressed_tex_sub_image(3, target, level, xoffset, yoffset, zoffset, 3671 width, height, depth, format, imageSize, data); 3672} 3673 3674static gl_format 3675get_texbuffer_format(const struct gl_context *ctx, GLenum internalFormat) 3676{ 3677 switch (internalFormat) { 3678 case GL_ALPHA8: 3679 return MESA_FORMAT_A8; 3680 case GL_ALPHA16: 3681 return MESA_FORMAT_A16; 3682 case GL_ALPHA16F_ARB: 3683 return MESA_FORMAT_ALPHA_FLOAT16; 3684 case GL_ALPHA32F_ARB: 3685 return MESA_FORMAT_ALPHA_FLOAT32; 3686 case GL_ALPHA8I_EXT: 3687 return MESA_FORMAT_ALPHA_INT8; 3688 case GL_ALPHA16I_EXT: 3689 return MESA_FORMAT_ALPHA_INT16; 3690 case GL_ALPHA32I_EXT: 3691 return MESA_FORMAT_ALPHA_INT32; 3692 case GL_ALPHA8UI_EXT: 3693 return MESA_FORMAT_ALPHA_UINT8; 3694 case GL_ALPHA16UI_EXT: 3695 return MESA_FORMAT_ALPHA_UINT16; 3696 case GL_ALPHA32UI_EXT: 3697 return MESA_FORMAT_ALPHA_UINT32; 3698 case GL_LUMINANCE8: 3699 return MESA_FORMAT_L8; 3700 case GL_LUMINANCE16: 3701 return MESA_FORMAT_L16; 3702 case GL_LUMINANCE16F_ARB: 3703 return MESA_FORMAT_LUMINANCE_FLOAT16; 3704 case GL_LUMINANCE32F_ARB: 3705 return MESA_FORMAT_LUMINANCE_FLOAT32; 3706 case GL_LUMINANCE8I_EXT: 3707 return MESA_FORMAT_LUMINANCE_INT8; 3708 case GL_LUMINANCE16I_EXT: 3709 return MESA_FORMAT_LUMINANCE_INT16; 3710 case GL_LUMINANCE32I_EXT: 3711 return MESA_FORMAT_LUMINANCE_INT32; 3712 case GL_LUMINANCE8UI_EXT: 3713 return MESA_FORMAT_LUMINANCE_UINT8; 3714 case GL_LUMINANCE16UI_EXT: 3715 return MESA_FORMAT_LUMINANCE_UINT16; 3716 case GL_LUMINANCE32UI_EXT: 3717 return MESA_FORMAT_LUMINANCE_UINT32; 3718 case GL_LUMINANCE8_ALPHA8: 3719 return MESA_FORMAT_AL88; 3720 case GL_LUMINANCE16_ALPHA16: 3721 return MESA_FORMAT_AL1616; 3722 case GL_LUMINANCE_ALPHA16F_ARB: 3723 return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16; 3724 case GL_LUMINANCE_ALPHA32F_ARB: 3725 return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32; 3726 case GL_LUMINANCE_ALPHA8I_EXT: 3727 return MESA_FORMAT_LUMINANCE_ALPHA_INT8; 3728 case GL_LUMINANCE_ALPHA16I_EXT: 3729 return MESA_FORMAT_LUMINANCE_ALPHA_INT8; 3730 case GL_LUMINANCE_ALPHA32I_EXT: 3731 return MESA_FORMAT_LUMINANCE_ALPHA_INT16; 3732 case GL_LUMINANCE_ALPHA8UI_EXT: 3733 return MESA_FORMAT_LUMINANCE_ALPHA_UINT8; 3734 case GL_LUMINANCE_ALPHA16UI_EXT: 3735 return MESA_FORMAT_LUMINANCE_ALPHA_UINT16; 3736 case GL_LUMINANCE_ALPHA32UI_EXT: 3737 return MESA_FORMAT_LUMINANCE_ALPHA_UINT32; 3738 case GL_INTENSITY8: 3739 return MESA_FORMAT_I8; 3740 case GL_INTENSITY16: 3741 return MESA_FORMAT_I16; 3742 case GL_INTENSITY16F_ARB: 3743 return MESA_FORMAT_INTENSITY_FLOAT16; 3744 case GL_INTENSITY32F_ARB: 3745 return MESA_FORMAT_INTENSITY_FLOAT32; 3746 case GL_INTENSITY8I_EXT: 3747 return MESA_FORMAT_INTENSITY_INT8; 3748 case GL_INTENSITY16I_EXT: 3749 return MESA_FORMAT_INTENSITY_INT16; 3750 case GL_INTENSITY32I_EXT: 3751 return MESA_FORMAT_INTENSITY_INT32; 3752 case GL_INTENSITY8UI_EXT: 3753 return MESA_FORMAT_INTENSITY_UINT8; 3754 case GL_INTENSITY16UI_EXT: 3755 return MESA_FORMAT_INTENSITY_UINT16; 3756 case GL_INTENSITY32UI_EXT: 3757 return MESA_FORMAT_INTENSITY_UINT32; 3758 case GL_RGBA8: 3759 return MESA_FORMAT_RGBA8888_REV; 3760 case GL_RGBA16: 3761 return MESA_FORMAT_RGBA_16; 3762 case GL_RGBA16F_ARB: 3763 return MESA_FORMAT_RGBA_FLOAT16; 3764 case GL_RGBA32F_ARB: 3765 return MESA_FORMAT_RGBA_FLOAT32; 3766 case GL_RGBA8I_EXT: 3767 return MESA_FORMAT_RGBA_INT8; 3768 case GL_RGBA16I_EXT: 3769 return MESA_FORMAT_RGBA_INT16; 3770 case GL_RGBA32I_EXT: 3771 return MESA_FORMAT_RGBA_INT32; 3772 case GL_RGBA8UI_EXT: 3773 return MESA_FORMAT_RGBA_UINT8; 3774 case GL_RGBA16UI_EXT: 3775 return MESA_FORMAT_RGBA_UINT16; 3776 case GL_RGBA32UI_EXT: 3777 return MESA_FORMAT_RGBA_UINT32; 3778 3779 case GL_RG8: 3780 return MESA_FORMAT_GR88; 3781 case GL_RG16: 3782 return MESA_FORMAT_RG1616; 3783 case GL_RG16F: 3784 return MESA_FORMAT_RG_FLOAT16; 3785 case GL_RG32F: 3786 return MESA_FORMAT_RG_FLOAT32; 3787 case GL_RG8I: 3788 return MESA_FORMAT_RG_INT8; 3789 case GL_RG16I: 3790 return MESA_FORMAT_RG_INT16; 3791 case GL_RG32I: 3792 return MESA_FORMAT_RG_INT32; 3793 case GL_RG8UI: 3794 return MESA_FORMAT_RG_UINT8; 3795 case GL_RG16UI: 3796 return MESA_FORMAT_RG_UINT16; 3797 case GL_RG32UI: 3798 return MESA_FORMAT_RG_UINT32; 3799 3800 case GL_R8: 3801 return MESA_FORMAT_R8; 3802 case GL_R16: 3803 return MESA_FORMAT_R16; 3804 case GL_R16F: 3805 return MESA_FORMAT_R_FLOAT16; 3806 case GL_R32F: 3807 return MESA_FORMAT_R_FLOAT32; 3808 case GL_R8I: 3809 return MESA_FORMAT_R_INT8; 3810 case GL_R16I: 3811 return MESA_FORMAT_R_INT16; 3812 case GL_R32I: 3813 return MESA_FORMAT_R_INT32; 3814 case GL_R8UI: 3815 return MESA_FORMAT_R_UINT8; 3816 case GL_R16UI: 3817 return MESA_FORMAT_R_UINT16; 3818 case GL_R32UI: 3819 return MESA_FORMAT_R_UINT32; 3820 3821 default: 3822 return MESA_FORMAT_NONE; 3823 } 3824} 3825 3826static gl_format 3827validate_texbuffer_format(const struct gl_context *ctx, GLenum internalFormat) 3828{ 3829 gl_format format = get_texbuffer_format(ctx, internalFormat); 3830 GLenum datatype; 3831 3832 if (format == MESA_FORMAT_NONE) 3833 return MESA_FORMAT_NONE; 3834 3835 datatype = _mesa_get_format_datatype(format); 3836 if (datatype == GL_FLOAT && !ctx->Extensions.ARB_texture_float) 3837 return MESA_FORMAT_NONE; 3838 3839 if (datatype == GL_HALF_FLOAT && !ctx->Extensions.ARB_half_float_pixel) 3840 return MESA_FORMAT_NONE; 3841 3842 /* The GL_ARB_texture_rg and GL_ARB_texture_buffer_object specs don't make 3843 * any mention of R/RG formats, but they appear in the GL 3.1 core 3844 * specification. 3845 */ 3846 if (ctx->Version <= 30) { 3847 GLenum base_format = _mesa_get_format_base_format(format); 3848 3849 if (base_format == GL_R || base_format == GL_RG) 3850 return MESA_FORMAT_NONE; 3851 } 3852 return format; 3853} 3854 3855 3856/** GL_ARB_texture_buffer_object */ 3857void GLAPIENTRY 3858_mesa_TexBuffer(GLenum target, GLenum internalFormat, GLuint buffer) 3859{ 3860 struct gl_texture_object *texObj; 3861 struct gl_buffer_object *bufObj; 3862 gl_format format; 3863 3864 GET_CURRENT_CONTEXT(ctx); 3865 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); 3866 3867 if (!ctx->Extensions.ARB_texture_buffer_object) { 3868 _mesa_error(ctx, GL_INVALID_OPERATION, "glTexBuffer"); 3869 return; 3870 } 3871 3872 if (target != GL_TEXTURE_BUFFER_ARB) { 3873 _mesa_error(ctx, GL_INVALID_ENUM, "glTexBuffer(target)"); 3874 return; 3875 } 3876 3877 format = validate_texbuffer_format(ctx, internalFormat); 3878 if (format == MESA_FORMAT_NONE) { 3879 _mesa_error(ctx, GL_INVALID_ENUM, "glTexBuffer(internalFormat 0x%x)", 3880 internalFormat); 3881 return; 3882 } 3883 3884 bufObj = _mesa_lookup_bufferobj(ctx, buffer); 3885 if (buffer && !bufObj) { 3886 _mesa_error(ctx, GL_INVALID_OPERATION, "glTexBuffer(buffer %u)", buffer); 3887 return; 3888 } 3889 3890 texObj = _mesa_get_current_tex_object(ctx, target); 3891 3892 _mesa_lock_texture(ctx, texObj); 3893 { 3894 _mesa_reference_buffer_object(ctx, &texObj->BufferObject, bufObj); 3895 texObj->BufferObjectFormat = internalFormat; 3896 texObj->_BufferObjectFormat = format; 3897 } 3898 _mesa_unlock_texture(ctx, texObj); 3899} 3900