teximage.c revision 58d11524dace34f6e9e513b23eaeb098d1eafd0b
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 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 * Is the given texture format a generic compressed format? 545 */ 546static GLboolean 547is_generic_compressed_format(GLenum format) 548{ 549 switch (format) { 550 case GL_COMPRESSED_RED: 551 case GL_COMPRESSED_RG: 552 case GL_COMPRESSED_RGB: 553 case GL_COMPRESSED_RGBA: 554 case GL_COMPRESSED_ALPHA: 555 case GL_COMPRESSED_LUMINANCE: 556 case GL_COMPRESSED_LUMINANCE_ALPHA: 557 case GL_COMPRESSED_INTENSITY: 558 case GL_COMPRESSED_SRGB: 559 case GL_COMPRESSED_SRGB_ALPHA: 560 case GL_COMPRESSED_SLUMINANCE: 561 case GL_COMPRESSED_SLUMINANCE_ALPHA: 562 return GL_TRUE; 563 default: 564 return GL_FALSE; 565 } 566} 567 568 569/** 570 * For cube map faces, return a face index in [0,5]. 571 * For other targets return 0; 572 */ 573GLuint 574_mesa_tex_target_to_face(GLenum target) 575{ 576 if (_mesa_is_cube_face(target)) 577 return (GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X; 578 else 579 return 0; 580} 581 582 583 584/** 585 * Install gl_texture_image in a gl_texture_object according to the target 586 * and level parameters. 587 * 588 * \param tObj texture object. 589 * \param target texture target. 590 * \param level image level. 591 * \param texImage texture image. 592 */ 593static void 594set_tex_image(struct gl_texture_object *tObj, 595 GLenum target, GLint level, 596 struct gl_texture_image *texImage) 597{ 598 const GLuint face = _mesa_tex_target_to_face(target); 599 600 ASSERT(tObj); 601 ASSERT(texImage); 602 if (target == GL_TEXTURE_RECTANGLE_NV || target == GL_TEXTURE_EXTERNAL_OES) 603 assert(level == 0); 604 605 tObj->Image[face][level] = texImage; 606 607 /* Set the 'back' pointer */ 608 texImage->TexObject = tObj; 609 texImage->Level = level; 610 texImage->Face = face; 611} 612 613 614/** 615 * Allocate a texture image structure. 616 * 617 * Called via ctx->Driver.NewTextureImage() unless overriden by a device 618 * driver. 619 * 620 * \return a pointer to gl_texture_image struct with all fields initialized to 621 * zero. 622 */ 623struct gl_texture_image * 624_mesa_new_texture_image( struct gl_context *ctx ) 625{ 626 (void) ctx; 627 return CALLOC_STRUCT(gl_texture_image); 628} 629 630 631/** 632 * Free a gl_texture_image and associated data. 633 * This function is a fallback called via ctx->Driver.DeleteTextureImage(). 634 * 635 * \param texImage texture image. 636 * 637 * Free the texture image structure and the associated image data. 638 */ 639void 640_mesa_delete_texture_image(struct gl_context *ctx, 641 struct gl_texture_image *texImage) 642{ 643 /* Free texImage->Data and/or any other driver-specific texture 644 * image storage. 645 */ 646 ASSERT(ctx->Driver.FreeTextureImageBuffer); 647 ctx->Driver.FreeTextureImageBuffer( ctx, texImage ); 648 free(texImage); 649} 650 651 652/** 653 * Test if a target is a proxy target. 654 * 655 * \param target texture target. 656 * 657 * \return GL_TRUE if the target is a proxy target, GL_FALSE otherwise. 658 */ 659GLboolean 660_mesa_is_proxy_texture(GLenum target) 661{ 662 /* 663 * NUM_TEXTURE_TARGETS should match number of terms below, except there's no 664 * proxy for GL_TEXTURE_BUFFER and GL_TEXTURE_EXTERNAL_OES. 665 */ 666 assert(NUM_TEXTURE_TARGETS == 7 + 2); 667 668 return (target == GL_PROXY_TEXTURE_1D || 669 target == GL_PROXY_TEXTURE_2D || 670 target == GL_PROXY_TEXTURE_3D || 671 target == GL_PROXY_TEXTURE_CUBE_MAP_ARB || 672 target == GL_PROXY_TEXTURE_RECTANGLE_NV || 673 target == GL_PROXY_TEXTURE_1D_ARRAY_EXT || 674 target == GL_PROXY_TEXTURE_2D_ARRAY_EXT); 675} 676 677 678/** 679 * Return the proxy target which corresponds to the given texture target 680 */ 681static GLenum 682get_proxy_target(GLenum target) 683{ 684 switch (target) { 685 case GL_TEXTURE_1D: 686 case GL_PROXY_TEXTURE_1D: 687 return GL_PROXY_TEXTURE_1D; 688 case GL_TEXTURE_2D: 689 case GL_PROXY_TEXTURE_2D: 690 return GL_PROXY_TEXTURE_2D; 691 case GL_TEXTURE_3D: 692 case GL_PROXY_TEXTURE_3D: 693 return GL_PROXY_TEXTURE_3D; 694 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: 695 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: 696 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: 697 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: 698 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: 699 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: 700 case GL_TEXTURE_CUBE_MAP_ARB: 701 case GL_PROXY_TEXTURE_CUBE_MAP_ARB: 702 return GL_PROXY_TEXTURE_CUBE_MAP_ARB; 703 case GL_TEXTURE_RECTANGLE_NV: 704 case GL_PROXY_TEXTURE_RECTANGLE_NV: 705 return GL_PROXY_TEXTURE_RECTANGLE_NV; 706 case GL_TEXTURE_1D_ARRAY_EXT: 707 case GL_PROXY_TEXTURE_1D_ARRAY_EXT: 708 return GL_PROXY_TEXTURE_1D_ARRAY_EXT; 709 case GL_TEXTURE_2D_ARRAY_EXT: 710 case GL_PROXY_TEXTURE_2D_ARRAY_EXT: 711 return GL_PROXY_TEXTURE_2D_ARRAY_EXT; 712 default: 713 _mesa_problem(NULL, "unexpected target in get_proxy_target()"); 714 return 0; 715 } 716} 717 718 719/** 720 * Get the texture object that corresponds to the target of the given 721 * texture unit. The target should have already been checked for validity. 722 * 723 * \param ctx GL context. 724 * \param texUnit texture unit. 725 * \param target texture target. 726 * 727 * \return pointer to the texture object on success, or NULL on failure. 728 */ 729struct gl_texture_object * 730_mesa_select_tex_object(struct gl_context *ctx, 731 const struct gl_texture_unit *texUnit, 732 GLenum target) 733{ 734 const GLboolean arrayTex = (ctx->Extensions.MESA_texture_array || 735 ctx->Extensions.EXT_texture_array); 736 737 switch (target) { 738 case GL_TEXTURE_1D: 739 return texUnit->CurrentTex[TEXTURE_1D_INDEX]; 740 case GL_PROXY_TEXTURE_1D: 741 return ctx->Texture.ProxyTex[TEXTURE_1D_INDEX]; 742 case GL_TEXTURE_2D: 743 return texUnit->CurrentTex[TEXTURE_2D_INDEX]; 744 case GL_PROXY_TEXTURE_2D: 745 return ctx->Texture.ProxyTex[TEXTURE_2D_INDEX]; 746 case GL_TEXTURE_3D: 747 return texUnit->CurrentTex[TEXTURE_3D_INDEX]; 748 case GL_PROXY_TEXTURE_3D: 749 return ctx->Texture.ProxyTex[TEXTURE_3D_INDEX]; 750 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: 751 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: 752 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: 753 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: 754 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: 755 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: 756 case GL_TEXTURE_CUBE_MAP_ARB: 757 return ctx->Extensions.ARB_texture_cube_map 758 ? texUnit->CurrentTex[TEXTURE_CUBE_INDEX] : NULL; 759 case GL_PROXY_TEXTURE_CUBE_MAP_ARB: 760 return ctx->Extensions.ARB_texture_cube_map 761 ? ctx->Texture.ProxyTex[TEXTURE_CUBE_INDEX] : NULL; 762 case GL_TEXTURE_RECTANGLE_NV: 763 return ctx->Extensions.NV_texture_rectangle 764 ? texUnit->CurrentTex[TEXTURE_RECT_INDEX] : NULL; 765 case GL_PROXY_TEXTURE_RECTANGLE_NV: 766 return ctx->Extensions.NV_texture_rectangle 767 ? ctx->Texture.ProxyTex[TEXTURE_RECT_INDEX] : NULL; 768 case GL_TEXTURE_1D_ARRAY_EXT: 769 return arrayTex ? texUnit->CurrentTex[TEXTURE_1D_ARRAY_INDEX] : NULL; 770 case GL_PROXY_TEXTURE_1D_ARRAY_EXT: 771 return arrayTex ? ctx->Texture.ProxyTex[TEXTURE_1D_ARRAY_INDEX] : NULL; 772 case GL_TEXTURE_2D_ARRAY_EXT: 773 return arrayTex ? texUnit->CurrentTex[TEXTURE_2D_ARRAY_INDEX] : NULL; 774 case GL_PROXY_TEXTURE_2D_ARRAY_EXT: 775 return arrayTex ? ctx->Texture.ProxyTex[TEXTURE_2D_ARRAY_INDEX] : NULL; 776 case GL_TEXTURE_BUFFER: 777 return ctx->Extensions.ARB_texture_buffer_object 778 ? texUnit->CurrentTex[TEXTURE_BUFFER_INDEX] : NULL; 779 case GL_TEXTURE_EXTERNAL_OES: 780 return ctx->Extensions.OES_EGL_image_external 781 ? texUnit->CurrentTex[TEXTURE_EXTERNAL_INDEX] : NULL; 782 default: 783 _mesa_problem(NULL, "bad target in _mesa_select_tex_object()"); 784 return NULL; 785 } 786} 787 788 789/** 790 * Return pointer to texture object for given target on current texture unit. 791 */ 792struct gl_texture_object * 793_mesa_get_current_tex_object(struct gl_context *ctx, GLenum target) 794{ 795 struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx); 796 return _mesa_select_tex_object(ctx, texUnit, target); 797} 798 799 800/** 801 * Get a texture image pointer from a texture object, given a texture 802 * target and mipmap level. The target and level parameters should 803 * have already been error-checked. 804 * 805 * \param ctx GL context. 806 * \param texObj texture unit. 807 * \param target texture target. 808 * \param level image level. 809 * 810 * \return pointer to the texture image structure, or NULL on failure. 811 */ 812struct gl_texture_image * 813_mesa_select_tex_image(struct gl_context *ctx, 814 const struct gl_texture_object *texObj, 815 GLenum target, GLint level) 816{ 817 const GLuint face = _mesa_tex_target_to_face(target); 818 819 ASSERT(texObj); 820 ASSERT(level >= 0); 821 ASSERT(level < MAX_TEXTURE_LEVELS); 822 823 return texObj->Image[face][level]; 824} 825 826 827/** 828 * Like _mesa_select_tex_image() but if the image doesn't exist, allocate 829 * it and install it. Only return NULL if passed a bad parameter or run 830 * out of memory. 831 */ 832struct gl_texture_image * 833_mesa_get_tex_image(struct gl_context *ctx, struct gl_texture_object *texObj, 834 GLenum target, GLint level) 835{ 836 struct gl_texture_image *texImage; 837 838 if (!texObj) 839 return NULL; 840 841 texImage = _mesa_select_tex_image(ctx, texObj, target, level); 842 if (!texImage) { 843 texImage = ctx->Driver.NewTextureImage(ctx); 844 if (!texImage) { 845 _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture image allocation"); 846 return NULL; 847 } 848 849 set_tex_image(texObj, target, level, texImage); 850 } 851 852 return texImage; 853} 854 855 856/** 857 * Return pointer to the specified proxy texture image. 858 * Note that proxy textures are per-context, not per-texture unit. 859 * \return pointer to texture image or NULL if invalid target, invalid 860 * level, or out of memory. 861 */ 862struct gl_texture_image * 863_mesa_get_proxy_tex_image(struct gl_context *ctx, GLenum target, GLint level) 864{ 865 struct gl_texture_image *texImage; 866 GLuint texIndex; 867 868 if (level < 0) 869 return NULL; 870 871 switch (target) { 872 case GL_PROXY_TEXTURE_1D: 873 if (level >= ctx->Const.MaxTextureLevels) 874 return NULL; 875 texIndex = TEXTURE_1D_INDEX; 876 break; 877 case GL_PROXY_TEXTURE_2D: 878 if (level >= ctx->Const.MaxTextureLevels) 879 return NULL; 880 texIndex = TEXTURE_2D_INDEX; 881 break; 882 case GL_PROXY_TEXTURE_3D: 883 if (level >= ctx->Const.Max3DTextureLevels) 884 return NULL; 885 texIndex = TEXTURE_3D_INDEX; 886 break; 887 case GL_PROXY_TEXTURE_CUBE_MAP: 888 if (level >= ctx->Const.MaxCubeTextureLevels) 889 return NULL; 890 texIndex = TEXTURE_CUBE_INDEX; 891 break; 892 case GL_PROXY_TEXTURE_RECTANGLE_NV: 893 if (level > 0) 894 return NULL; 895 texIndex = TEXTURE_RECT_INDEX; 896 break; 897 case GL_PROXY_TEXTURE_1D_ARRAY_EXT: 898 if (level >= ctx->Const.MaxTextureLevels) 899 return NULL; 900 texIndex = TEXTURE_1D_ARRAY_INDEX; 901 break; 902 case GL_PROXY_TEXTURE_2D_ARRAY_EXT: 903 if (level >= ctx->Const.MaxTextureLevels) 904 return NULL; 905 texIndex = TEXTURE_2D_ARRAY_INDEX; 906 break; 907 default: 908 return NULL; 909 } 910 911 texImage = ctx->Texture.ProxyTex[texIndex]->Image[0][level]; 912 if (!texImage) { 913 texImage = ctx->Driver.NewTextureImage(ctx); 914 if (!texImage) { 915 _mesa_error(ctx, GL_OUT_OF_MEMORY, "proxy texture allocation"); 916 return NULL; 917 } 918 ctx->Texture.ProxyTex[texIndex]->Image[0][level] = texImage; 919 /* Set the 'back' pointer */ 920 texImage->TexObject = ctx->Texture.ProxyTex[texIndex]; 921 } 922 return texImage; 923} 924 925 926/** 927 * Get the maximum number of allowed mipmap levels. 928 * 929 * \param ctx GL context. 930 * \param target texture target. 931 * 932 * \return the maximum number of allowed mipmap levels for the given 933 * texture target, or zero if passed a bad target. 934 * 935 * \sa gl_constants. 936 */ 937GLint 938_mesa_max_texture_levels(struct gl_context *ctx, GLenum target) 939{ 940 switch (target) { 941 case GL_TEXTURE_1D: 942 case GL_PROXY_TEXTURE_1D: 943 case GL_TEXTURE_2D: 944 case GL_PROXY_TEXTURE_2D: 945 return ctx->Const.MaxTextureLevels; 946 case GL_TEXTURE_3D: 947 case GL_PROXY_TEXTURE_3D: 948 return ctx->Const.Max3DTextureLevels; 949 case GL_TEXTURE_CUBE_MAP: 950 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: 951 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: 952 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: 953 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: 954 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: 955 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: 956 case GL_PROXY_TEXTURE_CUBE_MAP_ARB: 957 return ctx->Extensions.ARB_texture_cube_map 958 ? ctx->Const.MaxCubeTextureLevels : 0; 959 case GL_TEXTURE_RECTANGLE_NV: 960 case GL_PROXY_TEXTURE_RECTANGLE_NV: 961 return ctx->Extensions.NV_texture_rectangle ? 1 : 0; 962 case GL_TEXTURE_1D_ARRAY_EXT: 963 case GL_PROXY_TEXTURE_1D_ARRAY_EXT: 964 case GL_TEXTURE_2D_ARRAY_EXT: 965 case GL_PROXY_TEXTURE_2D_ARRAY_EXT: 966 return (ctx->Extensions.MESA_texture_array || 967 ctx->Extensions.EXT_texture_array) 968 ? ctx->Const.MaxTextureLevels : 0; 969 case GL_TEXTURE_BUFFER: 970 case GL_TEXTURE_EXTERNAL_OES: 971 /* fall-through */ 972 default: 973 return 0; /* bad target */ 974 } 975} 976 977 978/** 979 * Return number of dimensions per mipmap level for the given texture target. 980 */ 981GLint 982_mesa_get_texture_dimensions(GLenum target) 983{ 984 switch (target) { 985 case GL_TEXTURE_1D: 986 case GL_PROXY_TEXTURE_1D: 987 return 1; 988 case GL_TEXTURE_2D: 989 case GL_TEXTURE_RECTANGLE: 990 case GL_TEXTURE_CUBE_MAP: 991 case GL_PROXY_TEXTURE_2D: 992 case GL_PROXY_TEXTURE_RECTANGLE: 993 case GL_PROXY_TEXTURE_CUBE_MAP: 994 case GL_TEXTURE_CUBE_MAP_POSITIVE_X: 995 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: 996 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: 997 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: 998 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: 999 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: 1000 case GL_TEXTURE_1D_ARRAY: 1001 case GL_PROXY_TEXTURE_1D_ARRAY: 1002 case GL_TEXTURE_EXTERNAL_OES: 1003 return 2; 1004 case GL_TEXTURE_3D: 1005 case GL_PROXY_TEXTURE_3D: 1006 case GL_TEXTURE_2D_ARRAY: 1007 case GL_PROXY_TEXTURE_2D_ARRAY: 1008 return 3; 1009 case GL_TEXTURE_BUFFER: 1010 /* fall-through */ 1011 default: 1012 _mesa_problem(NULL, "invalid target 0x%x in get_texture_dimensions()", 1013 target); 1014 return 2; 1015 } 1016} 1017 1018 1019 1020 1021#if 000 /* not used anymore */ 1022/* 1023 * glTexImage[123]D can accept a NULL image pointer. In this case we 1024 * create a texture image with unspecified image contents per the OpenGL 1025 * spec. 1026 */ 1027static GLubyte * 1028make_null_texture(GLint width, GLint height, GLint depth, GLenum format) 1029{ 1030 const GLint components = _mesa_components_in_format(format); 1031 const GLint numPixels = width * height * depth; 1032 GLubyte *data = (GLubyte *) MALLOC(numPixels * components * sizeof(GLubyte)); 1033 1034#ifdef DEBUG 1035 /* 1036 * Let's see if anyone finds this. If glTexImage2D() is called with 1037 * a NULL image pointer then load the texture image with something 1038 * interesting instead of leaving it indeterminate. 1039 */ 1040 if (data) { 1041 static const char message[8][32] = { 1042 " X X XXXXX XXX X ", 1043 " XX XX X X X X X ", 1044 " X X X X X X X ", 1045 " X X XXXX XXX XXXXX ", 1046 " X X X X X X ", 1047 " X X X X X X X ", 1048 " X X XXXXX XXX X X ", 1049 " " 1050 }; 1051 1052 GLubyte *imgPtr = data; 1053 GLint h, i, j, k; 1054 for (h = 0; h < depth; h++) { 1055 for (i = 0; i < height; i++) { 1056 GLint srcRow = 7 - (i % 8); 1057 for (j = 0; j < width; j++) { 1058 GLint srcCol = j % 32; 1059 GLubyte texel = (message[srcRow][srcCol]=='X') ? 255 : 70; 1060 for (k = 0; k < components; k++) { 1061 *imgPtr++ = texel; 1062 } 1063 } 1064 } 1065 } 1066 } 1067#endif 1068 1069 return data; 1070} 1071#endif 1072 1073 1074 1075/** 1076 * Set the size and format-related fields of a gl_texture_image struct 1077 * to zero. This is used when a proxy texture test fails. 1078 */ 1079static void 1080clear_teximage_fields(struct gl_texture_image *img) 1081{ 1082 ASSERT(img); 1083 img->_BaseFormat = 0; 1084 img->InternalFormat = 0; 1085 img->Border = 0; 1086 img->Width = 0; 1087 img->Height = 0; 1088 img->Depth = 0; 1089 img->Width2 = 0; 1090 img->Height2 = 0; 1091 img->Depth2 = 0; 1092 img->WidthLog2 = 0; 1093 img->HeightLog2 = 0; 1094 img->DepthLog2 = 0; 1095 img->TexFormat = MESA_FORMAT_NONE; 1096} 1097 1098 1099/** 1100 * Initialize basic fields of the gl_texture_image struct. 1101 * 1102 * \param ctx GL context. 1103 * \param img texture image structure to be initialized. 1104 * \param width image width. 1105 * \param height image height. 1106 * \param depth image depth. 1107 * \param border image border. 1108 * \param internalFormat internal format. 1109 * \param format the actual hardware format (one of MESA_FORMAT_*) 1110 * 1111 * Fills in the fields of \p img with the given information. 1112 * Note: width, height and depth include the border. 1113 */ 1114void 1115_mesa_init_teximage_fields(struct gl_context *ctx, 1116 struct gl_texture_image *img, 1117 GLsizei width, GLsizei height, GLsizei depth, 1118 GLint border, GLenum internalFormat, 1119 gl_format format) 1120{ 1121 GLenum target; 1122 ASSERT(img); 1123 ASSERT(width >= 0); 1124 ASSERT(height >= 0); 1125 ASSERT(depth >= 0); 1126 1127 target = img->TexObject->Target; 1128 img->_BaseFormat = _mesa_base_tex_format( ctx, internalFormat ); 1129 ASSERT(img->_BaseFormat > 0); 1130 img->InternalFormat = internalFormat; 1131 img->Border = border; 1132 img->Width = width; 1133 img->Height = height; 1134 img->Depth = depth; 1135 1136 img->Width2 = width - 2 * border; /* == 1 << img->WidthLog2; */ 1137 img->WidthLog2 = _mesa_logbase2(img->Width2); 1138 1139 switch(target) { 1140 case GL_TEXTURE_1D: 1141 case GL_TEXTURE_BUFFER: 1142 case GL_PROXY_TEXTURE_1D: 1143 if (height == 0) 1144 img->Height2 = 0; 1145 else 1146 img->Height2 = 1; 1147 img->HeightLog2 = 0; 1148 if (depth == 0) 1149 img->Depth2 = 0; 1150 else 1151 img->Depth2 = 1; 1152 img->DepthLog2 = 0; 1153 break; 1154 case GL_TEXTURE_1D_ARRAY: 1155 case GL_PROXY_TEXTURE_1D_ARRAY: 1156 img->Height2 = height; /* no border */ 1157 img->HeightLog2 = 0; /* not used */ 1158 if (depth == 0) 1159 img->Depth2 = 0; 1160 else 1161 img->Depth2 = 1; 1162 img->DepthLog2 = 0; 1163 break; 1164 case GL_TEXTURE_2D: 1165 case GL_TEXTURE_RECTANGLE: 1166 case GL_TEXTURE_CUBE_MAP: 1167 case GL_TEXTURE_CUBE_MAP_POSITIVE_X: 1168 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: 1169 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: 1170 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: 1171 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: 1172 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: 1173 case GL_TEXTURE_EXTERNAL_OES: 1174 case GL_PROXY_TEXTURE_2D: 1175 case GL_PROXY_TEXTURE_RECTANGLE: 1176 case GL_PROXY_TEXTURE_CUBE_MAP: 1177 img->Height2 = height - 2 * border; /* == 1 << img->HeightLog2; */ 1178 img->HeightLog2 = _mesa_logbase2(img->Height2); 1179 if (depth == 0) 1180 img->Depth2 = 0; 1181 else 1182 img->Depth2 = 1; 1183 img->DepthLog2 = 0; 1184 break; 1185 case GL_TEXTURE_2D_ARRAY: 1186 case GL_PROXY_TEXTURE_2D_ARRAY: 1187 img->Height2 = height - 2 * border; /* == 1 << img->HeightLog2; */ 1188 img->HeightLog2 = _mesa_logbase2(img->Height2); 1189 img->Depth2 = depth; /* no border */ 1190 img->DepthLog2 = 0; /* not used */ 1191 break; 1192 case GL_TEXTURE_3D: 1193 case GL_PROXY_TEXTURE_3D: 1194 img->Height2 = height - 2 * border; /* == 1 << img->HeightLog2; */ 1195 img->HeightLog2 = _mesa_logbase2(img->Height2); 1196 img->Depth2 = depth - 2 * border; /* == 1 << img->DepthLog2; */ 1197 img->DepthLog2 = _mesa_logbase2(img->Depth2); 1198 break; 1199 default: 1200 _mesa_problem(NULL, "invalid target 0x%x in _mesa_init_teximage_fields()", 1201 target); 1202 } 1203 1204 img->MaxLog2 = MAX2(img->WidthLog2, img->HeightLog2); 1205 img->TexFormat = format; 1206} 1207 1208 1209/** 1210 * Free and clear fields of the gl_texture_image struct. 1211 * 1212 * \param ctx GL context. 1213 * \param texImage texture image structure to be cleared. 1214 * 1215 * After the call, \p texImage will have no data associated with it. Its 1216 * fields are cleared so that its parent object will test incomplete. 1217 */ 1218void 1219_mesa_clear_texture_image(struct gl_context *ctx, 1220 struct gl_texture_image *texImage) 1221{ 1222 ctx->Driver.FreeTextureImageBuffer(ctx, texImage); 1223 clear_teximage_fields(texImage); 1224} 1225 1226 1227/** 1228 * This is the fallback for Driver.TestProxyTexImage(). Test the texture 1229 * level, width, height and depth against the ctx->Const limits for textures. 1230 * 1231 * A hardware driver might override this function if, for example, the 1232 * max 3D texture size is 512x512x64 (i.e. not a cube). 1233 * 1234 * Note that width, height, depth == 0 is not an error. However, a 1235 * texture with zero width/height/depth will be considered "incomplete" 1236 * and texturing will effectively be disabled. 1237 * 1238 * \param target one of GL_PROXY_TEXTURE_1D, GL_PROXY_TEXTURE_2D, 1239 * GL_PROXY_TEXTURE_3D, GL_PROXY_TEXTURE_RECTANGLE_NV, 1240 * GL_PROXY_TEXTURE_CUBE_MAP_ARB. 1241 * \param level as passed to glTexImage 1242 * \param internalFormat as passed to glTexImage 1243 * \param format as passed to glTexImage 1244 * \param type as passed to glTexImage 1245 * \param width as passed to glTexImage 1246 * \param height as passed to glTexImage 1247 * \param depth as passed to glTexImage 1248 * \param border as passed to glTexImage 1249 * \return GL_TRUE if the image is acceptable, GL_FALSE if not acceptable. 1250 */ 1251GLboolean 1252_mesa_test_proxy_teximage(struct gl_context *ctx, GLenum target, GLint level, 1253 GLint internalFormat, GLenum format, GLenum type, 1254 GLint width, GLint height, GLint depth, GLint border) 1255{ 1256 GLint maxSize; 1257 1258 (void) internalFormat; 1259 (void) format; 1260 (void) type; 1261 1262 switch (target) { 1263 case GL_PROXY_TEXTURE_1D: 1264 maxSize = 1 << (ctx->Const.MaxTextureLevels - 1); 1265 if (width < 2 * border || width > 2 * border + maxSize) 1266 return GL_FALSE; 1267 if (level >= ctx->Const.MaxTextureLevels) 1268 return GL_FALSE; 1269 if (!ctx->Extensions.ARB_texture_non_power_of_two) { 1270 if (width > 0 && !_mesa_is_pow_two(width - 2 * border)) 1271 return GL_FALSE; 1272 } 1273 return GL_TRUE; 1274 1275 case GL_PROXY_TEXTURE_2D: 1276 maxSize = 1 << (ctx->Const.MaxTextureLevels - 1); 1277 if (width < 2 * border || width > 2 * border + maxSize) 1278 return GL_FALSE; 1279 if (height < 2 * border || height > 2 * border + maxSize) 1280 return GL_FALSE; 1281 if (level >= ctx->Const.MaxTextureLevels) 1282 return GL_FALSE; 1283 if (!ctx->Extensions.ARB_texture_non_power_of_two) { 1284 if (width > 0 && !_mesa_is_pow_two(width - 2 * border)) 1285 return GL_FALSE; 1286 if (height > 0 && !_mesa_is_pow_two(height - 2 * border)) 1287 return GL_FALSE; 1288 } 1289 return GL_TRUE; 1290 1291 case GL_PROXY_TEXTURE_3D: 1292 maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1); 1293 if (width < 2 * border || width > 2 * border + maxSize) 1294 return GL_FALSE; 1295 if (height < 2 * border || height > 2 * border + maxSize) 1296 return GL_FALSE; 1297 if (depth < 2 * border || depth > 2 * border + maxSize) 1298 return GL_FALSE; 1299 if (level >= ctx->Const.Max3DTextureLevels) 1300 return GL_FALSE; 1301 if (!ctx->Extensions.ARB_texture_non_power_of_two) { 1302 if (width > 0 && !_mesa_is_pow_two(width - 2 * border)) 1303 return GL_FALSE; 1304 if (height > 0 && !_mesa_is_pow_two(height - 2 * border)) 1305 return GL_FALSE; 1306 if (depth > 0 && !_mesa_is_pow_two(depth - 2 * border)) 1307 return GL_FALSE; 1308 } 1309 return GL_TRUE; 1310 1311 case GL_PROXY_TEXTURE_RECTANGLE_NV: 1312 maxSize = ctx->Const.MaxTextureRectSize; 1313 if (width < 0 || width > maxSize) 1314 return GL_FALSE; 1315 if (height < 0 || height > maxSize) 1316 return GL_FALSE; 1317 if (level != 0) 1318 return GL_FALSE; 1319 return GL_TRUE; 1320 1321 case GL_PROXY_TEXTURE_CUBE_MAP_ARB: 1322 maxSize = 1 << (ctx->Const.MaxCubeTextureLevels - 1); 1323 if (width < 2 * border || width > 2 * border + maxSize) 1324 return GL_FALSE; 1325 if (height < 2 * border || height > 2 * border + maxSize) 1326 return GL_FALSE; 1327 if (level >= ctx->Const.MaxCubeTextureLevels) 1328 return GL_FALSE; 1329 if (!ctx->Extensions.ARB_texture_non_power_of_two) { 1330 if (width > 0 && !_mesa_is_pow_two(width - 2 * border)) 1331 return GL_FALSE; 1332 if (height > 0 && !_mesa_is_pow_two(height - 2 * border)) 1333 return GL_FALSE; 1334 } 1335 return GL_TRUE; 1336 1337 case GL_PROXY_TEXTURE_1D_ARRAY_EXT: 1338 maxSize = 1 << (ctx->Const.MaxTextureLevels - 1); 1339 if (width < 2 * border || width > 2 * border + maxSize) 1340 return GL_FALSE; 1341 if (height < 1 || height > ctx->Const.MaxArrayTextureLayers) 1342 return GL_FALSE; 1343 if (level >= ctx->Const.MaxTextureLevels) 1344 return GL_FALSE; 1345 if (!ctx->Extensions.ARB_texture_non_power_of_two) { 1346 if (width > 0 && !_mesa_is_pow_two(width - 2 * border)) 1347 return GL_FALSE; 1348 } 1349 return GL_TRUE; 1350 1351 case GL_PROXY_TEXTURE_2D_ARRAY_EXT: 1352 maxSize = 1 << (ctx->Const.MaxTextureLevels - 1); 1353 if (width < 2 * border || width > 2 * border + maxSize) 1354 return GL_FALSE; 1355 if (height < 2 * border || height > 2 * border + maxSize) 1356 return GL_FALSE; 1357 if (depth < 1 || depth > ctx->Const.MaxArrayTextureLayers) 1358 return GL_FALSE; 1359 if (level >= ctx->Const.MaxTextureLevels) 1360 return GL_FALSE; 1361 if (!ctx->Extensions.ARB_texture_non_power_of_two) { 1362 if (width > 0 && !_mesa_is_pow_two(width - 2 * border)) 1363 return GL_FALSE; 1364 if (height > 0 && !_mesa_is_pow_two(height - 2 * border)) 1365 return GL_FALSE; 1366 } 1367 return GL_TRUE; 1368 1369 default: 1370 _mesa_problem(ctx, "Invalid target in _mesa_test_proxy_teximage"); 1371 return GL_FALSE; 1372 } 1373} 1374 1375 1376/** 1377 * Check if the memory used by the texture would exceed the driver's limit. 1378 * This lets us support a max 3D texture size of 8K (for example) but 1379 * prevents allocating a full 8K x 8K x 8K texture. 1380 * XXX this could be rolled into the proxy texture size test (above) but 1381 * we don't have the actual texture internal format at that point. 1382 */ 1383static GLboolean 1384legal_texture_size(struct gl_context *ctx, gl_format format, 1385 GLint width, GLint height, GLint depth) 1386{ 1387 uint64_t bytes = _mesa_format_image_size64(format, width, height, depth); 1388 uint64_t mbytes = bytes / (1024 * 1024); /* convert to MB */ 1389 return mbytes <= (uint64_t) ctx->Const.MaxTextureMbytes; 1390} 1391 1392 1393/** 1394 * Return true if the format is only valid for glCompressedTexImage. 1395 */ 1396static GLboolean 1397compressedteximage_only_format(const struct gl_context *ctx, GLenum format) 1398{ 1399 switch (format) { 1400 case GL_ETC1_RGB8_OES: 1401 return GL_TRUE; 1402 default: 1403 return GL_FALSE; 1404 } 1405} 1406 1407 1408/** 1409 * Helper function to determine whether a target and specific compression 1410 * format are supported. 1411 */ 1412static GLboolean 1413target_can_be_compressed(const struct gl_context *ctx, GLenum target, 1414 GLenum intFormat) 1415{ 1416 (void) intFormat; /* not used yet */ 1417 1418 switch (target) { 1419 case GL_TEXTURE_2D: 1420 case GL_PROXY_TEXTURE_2D: 1421 return GL_TRUE; /* true for any compressed format so far */ 1422 case GL_PROXY_TEXTURE_CUBE_MAP: 1423 case GL_TEXTURE_CUBE_MAP_POSITIVE_X: 1424 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: 1425 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: 1426 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: 1427 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: 1428 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: 1429 return ctx->Extensions.ARB_texture_cube_map; 1430 case GL_PROXY_TEXTURE_2D_ARRAY_EXT: 1431 case GL_TEXTURE_2D_ARRAY_EXT: 1432 return (ctx->Extensions.MESA_texture_array || 1433 ctx->Extensions.EXT_texture_array); 1434 default: 1435 return GL_FALSE; 1436 } 1437} 1438 1439 1440/** 1441 * Check if the given texture target value is legal for a 1442 * glTexImage1/2/3D call. 1443 */ 1444static GLboolean 1445legal_teximage_target(struct gl_context *ctx, GLuint dims, GLenum target) 1446{ 1447 switch (dims) { 1448 case 1: 1449 switch (target) { 1450 case GL_TEXTURE_1D: 1451 case GL_PROXY_TEXTURE_1D: 1452 return GL_TRUE; 1453 default: 1454 return GL_FALSE; 1455 } 1456 case 2: 1457 switch (target) { 1458 case GL_TEXTURE_2D: 1459 case GL_PROXY_TEXTURE_2D: 1460 return GL_TRUE; 1461 case GL_PROXY_TEXTURE_CUBE_MAP: 1462 case GL_TEXTURE_CUBE_MAP_POSITIVE_X: 1463 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: 1464 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: 1465 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: 1466 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: 1467 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: 1468 return ctx->Extensions.ARB_texture_cube_map; 1469 case GL_TEXTURE_RECTANGLE_NV: 1470 case GL_PROXY_TEXTURE_RECTANGLE_NV: 1471 return ctx->Extensions.NV_texture_rectangle; 1472 case GL_TEXTURE_1D_ARRAY_EXT: 1473 case GL_PROXY_TEXTURE_1D_ARRAY_EXT: 1474 return (ctx->Extensions.MESA_texture_array || 1475 ctx->Extensions.EXT_texture_array); 1476 default: 1477 return GL_FALSE; 1478 } 1479 case 3: 1480 switch (target) { 1481 case GL_TEXTURE_3D: 1482 case GL_PROXY_TEXTURE_3D: 1483 return GL_TRUE; 1484 case GL_TEXTURE_2D_ARRAY_EXT: 1485 case GL_PROXY_TEXTURE_2D_ARRAY_EXT: 1486 return (ctx->Extensions.MESA_texture_array || 1487 ctx->Extensions.EXT_texture_array); 1488 default: 1489 return GL_FALSE; 1490 } 1491 default: 1492 _mesa_problem(ctx, "invalid dims=%u in legal_teximage_target()", dims); 1493 return GL_FALSE; 1494 } 1495} 1496 1497 1498/** 1499 * Check if the given texture target value is legal for a 1500 * glTexSubImage, glCopyTexSubImage or glCopyTexImage call. 1501 * The difference compared to legal_teximage_target() above is that 1502 * proxy targets are not supported. 1503 */ 1504static GLboolean 1505legal_texsubimage_target(struct gl_context *ctx, GLuint dims, GLenum target) 1506{ 1507 switch (dims) { 1508 case 1: 1509 return target == GL_TEXTURE_1D; 1510 case 2: 1511 switch (target) { 1512 case GL_TEXTURE_2D: 1513 return GL_TRUE; 1514 case GL_TEXTURE_CUBE_MAP_POSITIVE_X: 1515 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: 1516 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: 1517 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: 1518 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: 1519 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: 1520 return ctx->Extensions.ARB_texture_cube_map; 1521 case GL_TEXTURE_RECTANGLE_NV: 1522 return ctx->Extensions.NV_texture_rectangle; 1523 case GL_TEXTURE_1D_ARRAY_EXT: 1524 return (ctx->Extensions.MESA_texture_array || 1525 ctx->Extensions.EXT_texture_array); 1526 default: 1527 return GL_FALSE; 1528 } 1529 case 3: 1530 switch (target) { 1531 case GL_TEXTURE_3D: 1532 return GL_TRUE; 1533 case GL_TEXTURE_2D_ARRAY_EXT: 1534 return (ctx->Extensions.MESA_texture_array || 1535 ctx->Extensions.EXT_texture_array); 1536 default: 1537 return GL_FALSE; 1538 } 1539 default: 1540 _mesa_problem(ctx, "invalid dims=%u in legal_texsubimage_target()", 1541 dims); 1542 return GL_FALSE; 1543 } 1544} 1545 1546 1547/** 1548 * Helper function to determine if a texture object is mutable (in terms 1549 * of GL_ARB_texture_storage). 1550 */ 1551static GLboolean 1552mutable_tex_object(struct gl_context *ctx, GLenum target) 1553{ 1554 if (ctx->Extensions.ARB_texture_storage) { 1555 struct gl_texture_object *texObj = 1556 _mesa_get_current_tex_object(ctx, target); 1557 return !texObj->Immutable; 1558 } 1559 return GL_TRUE; 1560} 1561 1562 1563 1564/** 1565 * Test the glTexImage[123]D() parameters for errors. 1566 * 1567 * \param ctx GL context. 1568 * \param dimensions texture image dimensions (must be 1, 2 or 3). 1569 * \param target texture target given by the user. 1570 * \param level image level given by the user. 1571 * \param internalFormat internal format given by the user. 1572 * \param format pixel data format given by the user. 1573 * \param type pixel data type given by the user. 1574 * \param width image width given by the user. 1575 * \param height image height given by the user. 1576 * \param depth image depth given by the user. 1577 * \param border image border given by the user. 1578 * 1579 * \return GL_TRUE if an error was detected, or GL_FALSE if no errors. 1580 * 1581 * Verifies each of the parameters against the constants specified in 1582 * __struct gl_contextRec::Const and the supported extensions, and according 1583 * to the OpenGL specification. 1584 */ 1585static GLboolean 1586texture_error_check( struct gl_context *ctx, 1587 GLuint dimensions, GLenum target, 1588 GLint level, GLint internalFormat, 1589 GLenum format, GLenum type, 1590 GLint width, GLint height, 1591 GLint depth, GLint border ) 1592{ 1593 const GLenum proxyTarget = get_proxy_target(target); 1594 const GLboolean isProxy = target == proxyTarget; 1595 GLboolean sizeOK = GL_TRUE; 1596 GLboolean colorFormat; 1597 GLenum err; 1598 1599 /* Even though there are no color-index textures, we still have to support 1600 * uploading color-index data and remapping it to RGB via the 1601 * GL_PIXEL_MAP_I_TO_[RGBA] tables. 1602 */ 1603 const GLboolean indexFormat = (format == GL_COLOR_INDEX); 1604 1605 /* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */ 1606 if (level < 0 || level >= MAX_TEXTURE_LEVELS) { 1607 if (!isProxy) { 1608 _mesa_error(ctx, GL_INVALID_VALUE, 1609 "glTexImage%dD(level=%d)", dimensions, level); 1610 } 1611 return GL_TRUE; 1612 } 1613 1614 /* Check border */ 1615 if (border < 0 || border > 1 || 1616 ((target == GL_TEXTURE_RECTANGLE_NV || 1617 target == GL_PROXY_TEXTURE_RECTANGLE_NV) && border != 0)) { 1618 if (!isProxy) { 1619 _mesa_error(ctx, GL_INVALID_VALUE, 1620 "glTexImage%dD(border=%d)", dimensions, border); 1621 } 1622 return GL_TRUE; 1623 } 1624 1625 if (width < 0 || height < 0 || depth < 0) { 1626 if (!isProxy) { 1627 _mesa_error(ctx, GL_INVALID_VALUE, 1628 "glTexImage%dD(width, height or depth < 0)", dimensions); 1629 } 1630 return GL_TRUE; 1631 } 1632 1633 /* Do this simple check before calling the TestProxyTexImage() function */ 1634 if (proxyTarget == GL_PROXY_TEXTURE_CUBE_MAP_ARB) { 1635 sizeOK = (width == height); 1636 } 1637 1638 /* 1639 * Use the proxy texture driver hook to see if the size/level/etc are 1640 * legal. 1641 */ 1642 sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level, 1643 internalFormat, format, 1644 type, width, height, 1645 depth, border); 1646 if (!sizeOK) { 1647 if (!isProxy) { 1648 _mesa_error(ctx, GL_INVALID_VALUE, 1649 "glTexImage%dD(level=%d, width=%d, height=%d, depth=%d)", 1650 dimensions, level, width, height, depth); 1651 } 1652 return GL_TRUE; 1653 } 1654 1655 /* Check internalFormat */ 1656 if (_mesa_base_tex_format(ctx, internalFormat) < 0) { 1657 if (!isProxy) { 1658 _mesa_error(ctx, GL_INVALID_VALUE, 1659 "glTexImage%dD(internalFormat=%s)", 1660 dimensions, _mesa_lookup_enum_by_nr(internalFormat)); 1661 } 1662 return GL_TRUE; 1663 } 1664 1665 /* Check incoming image format and type */ 1666 err = _mesa_error_check_format_and_type(ctx, format, type); 1667 if (err != GL_NO_ERROR) { 1668 if (!isProxy) { 1669 _mesa_error(ctx, err, 1670 "glTexImage%dD(incompatible format 0x%x, type 0x%x)", 1671 dimensions, format, type); 1672 } 1673 return GL_TRUE; 1674 } 1675 1676 /* make sure internal format and format basically agree */ 1677 colorFormat = _mesa_is_color_format(format); 1678 if ((_mesa_is_color_format(internalFormat) && !colorFormat && !indexFormat) || 1679 (_mesa_is_depth_format(internalFormat) != _mesa_is_depth_format(format)) || 1680 (_mesa_is_ycbcr_format(internalFormat) != _mesa_is_ycbcr_format(format)) || 1681 (_mesa_is_depthstencil_format(internalFormat) != _mesa_is_depthstencil_format(format)) || 1682 (_mesa_is_dudv_format(internalFormat) != _mesa_is_dudv_format(format))) { 1683 if (!isProxy) 1684 _mesa_error(ctx, GL_INVALID_OPERATION, 1685 "glTexImage%dD(incompatible internalFormat 0x%x, format 0x%x)", 1686 dimensions, internalFormat, format); 1687 return GL_TRUE; 1688 } 1689 1690 /* additional checks for ycbcr textures */ 1691 if (internalFormat == GL_YCBCR_MESA) { 1692 ASSERT(ctx->Extensions.MESA_ycbcr_texture); 1693 if (type != GL_UNSIGNED_SHORT_8_8_MESA && 1694 type != GL_UNSIGNED_SHORT_8_8_REV_MESA) { 1695 char message[100]; 1696 _mesa_snprintf(message, sizeof(message), 1697 "glTexImage%dD(format/type YCBCR mismatch", dimensions); 1698 _mesa_error(ctx, GL_INVALID_ENUM, "%s", message); 1699 return GL_TRUE; /* error */ 1700 } 1701 if (target != GL_TEXTURE_2D && 1702 target != GL_PROXY_TEXTURE_2D && 1703 target != GL_TEXTURE_RECTANGLE_NV && 1704 target != GL_PROXY_TEXTURE_RECTANGLE_NV) { 1705 if (!isProxy) 1706 _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage(target)"); 1707 return GL_TRUE; 1708 } 1709 if (border != 0) { 1710 if (!isProxy) { 1711 char message[100]; 1712 _mesa_snprintf(message, sizeof(message), 1713 "glTexImage%dD(format=GL_YCBCR_MESA and border=%d)", 1714 dimensions, border); 1715 _mesa_error(ctx, GL_INVALID_VALUE, "%s", message); 1716 } 1717 return GL_TRUE; 1718 } 1719 } 1720 1721 /* additional checks for depth textures */ 1722 if (_mesa_base_tex_format(ctx, internalFormat) == GL_DEPTH_COMPONENT) { 1723 /* Only 1D, 2D, rect, array and cube textures supported, not 3D 1724 * Cubemaps are only supported for GL version > 3.0 or with EXT_gpu_shader4 */ 1725 if (target != GL_TEXTURE_1D && 1726 target != GL_PROXY_TEXTURE_1D && 1727 target != GL_TEXTURE_2D && 1728 target != GL_PROXY_TEXTURE_2D && 1729 target != GL_TEXTURE_1D_ARRAY && 1730 target != GL_PROXY_TEXTURE_1D_ARRAY && 1731 target != GL_TEXTURE_2D_ARRAY && 1732 target != GL_PROXY_TEXTURE_2D_ARRAY && 1733 target != GL_TEXTURE_RECTANGLE_ARB && 1734 target != GL_PROXY_TEXTURE_RECTANGLE_ARB && 1735 !((_mesa_is_cube_face(target) || target == GL_PROXY_TEXTURE_CUBE_MAP) && 1736 (ctx->Version >= 30 || ctx->Extensions.EXT_gpu_shader4))) { 1737 if (!isProxy) 1738 _mesa_error(ctx, GL_INVALID_ENUM, 1739 "glTexImage(target/internalFormat)"); 1740 return GL_TRUE; 1741 } 1742 } 1743 1744 /* additional checks for compressed textures */ 1745 if (_mesa_is_compressed_format(ctx, internalFormat) || 1746 is_generic_compressed_format(internalFormat)) { 1747 if (!target_can_be_compressed(ctx, target, internalFormat)) { 1748 if (!isProxy) 1749 _mesa_error(ctx, GL_INVALID_ENUM, 1750 "glTexImage%dD(target)", dimensions); 1751 return GL_TRUE; 1752 } 1753 if (compressedteximage_only_format(ctx, internalFormat)) { 1754 _mesa_error(ctx, GL_INVALID_OPERATION, 1755 "glTexImage%dD(no compression for format)", dimensions); 1756 return GL_TRUE; 1757 } 1758 if (border != 0) { 1759 if (!isProxy) { 1760 _mesa_error(ctx, GL_INVALID_OPERATION, 1761 "glTexImage%dD(border!=0)", dimensions); 1762 } 1763 return GL_TRUE; 1764 } 1765 } 1766 1767 /* additional checks for integer textures */ 1768 if ((ctx->Version >= 30 || ctx->Extensions.EXT_texture_integer) && 1769 (_mesa_is_enum_format_integer(format) != 1770 _mesa_is_enum_format_integer(internalFormat))) { 1771 if (!isProxy) { 1772 _mesa_error(ctx, GL_INVALID_OPERATION, 1773 "glTexImage%dD(integer/non-integer format mismatch)", 1774 dimensions); 1775 } 1776 return GL_TRUE; 1777 } 1778 1779 if (!mutable_tex_object(ctx, target)) { 1780 _mesa_error(ctx, GL_INVALID_OPERATION, 1781 "glTexImage%dD(immutable texture)", dimensions); 1782 return GL_TRUE; 1783 } 1784 1785 /* if we get here, the parameters are OK */ 1786 return GL_FALSE; 1787} 1788 1789 1790/** 1791 * Test glTexSubImage[123]D() parameters for errors. 1792 * 1793 * \param ctx GL context. 1794 * \param dimensions texture image dimensions (must be 1, 2 or 3). 1795 * \param target texture target given by the user. 1796 * \param level image level given by the user. 1797 * \param xoffset sub-image x offset given by the user. 1798 * \param yoffset sub-image y offset given by the user. 1799 * \param zoffset sub-image z offset given by the user. 1800 * \param format pixel data format given by the user. 1801 * \param type pixel data type given by the user. 1802 * \param width image width given by the user. 1803 * \param height image height given by the user. 1804 * \param depth image depth given by the user. 1805 * 1806 * \return GL_TRUE if an error was detected, or GL_FALSE if no errors. 1807 * 1808 * Verifies each of the parameters against the constants specified in 1809 * __struct gl_contextRec::Const and the supported extensions, and according 1810 * to the OpenGL specification. 1811 */ 1812static GLboolean 1813subtexture_error_check( struct gl_context *ctx, GLuint dimensions, 1814 GLenum target, GLint level, 1815 GLint xoffset, GLint yoffset, GLint zoffset, 1816 GLint width, GLint height, GLint depth, 1817 GLenum format, GLenum type ) 1818{ 1819 GLenum err; 1820 1821 /* Basic level check */ 1822 if (level < 0 || level >= MAX_TEXTURE_LEVELS) { 1823 _mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage2D(level=%d)", level); 1824 return GL_TRUE; 1825 } 1826 1827 /* Check for negative sizes */ 1828 if (width < 0) { 1829 _mesa_error(ctx, GL_INVALID_VALUE, 1830 "glTexSubImage%dD(width=%d)", dimensions, width); 1831 return GL_TRUE; 1832 } 1833 if (height < 0 && dimensions > 1) { 1834 _mesa_error(ctx, GL_INVALID_VALUE, 1835 "glTexSubImage%dD(height=%d)", dimensions, height); 1836 return GL_TRUE; 1837 } 1838 if (depth < 0 && dimensions > 2) { 1839 _mesa_error(ctx, GL_INVALID_VALUE, 1840 "glTexSubImage%dD(depth=%d)", dimensions, depth); 1841 return GL_TRUE; 1842 } 1843 1844 err = _mesa_error_check_format_and_type(ctx, format, type); 1845 if (err != GL_NO_ERROR) { 1846 _mesa_error(ctx, err, 1847 "glTexSubImage%dD(incompatible format 0x%x, type 0x%x)", 1848 dimensions, format, type); 1849 return GL_TRUE; 1850 } 1851 1852 return GL_FALSE; 1853} 1854 1855 1856/** 1857 * Do second part of glTexSubImage which depends on the destination texture. 1858 * \return GL_TRUE if error recorded, GL_FALSE otherwise 1859 */ 1860static GLboolean 1861subtexture_error_check2( struct gl_context *ctx, GLuint dimensions, 1862 GLenum target, GLint level, 1863 GLint xoffset, GLint yoffset, GLint zoffset, 1864 GLint width, GLint height, GLint depth, 1865 GLenum format, GLenum type, 1866 const struct gl_texture_image *destTex ) 1867{ 1868 if (!destTex) { 1869 /* undefined image level */ 1870 _mesa_error(ctx, GL_INVALID_OPERATION, "glTexSubImage%dD", dimensions); 1871 return GL_TRUE; 1872 } 1873 1874 if (xoffset < -((GLint)destTex->Border)) { 1875 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(xoffset)", 1876 dimensions); 1877 return GL_TRUE; 1878 } 1879 if (xoffset + width > (GLint) (destTex->Width + destTex->Border)) { 1880 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(xoffset+width)", 1881 dimensions); 1882 return GL_TRUE; 1883 } 1884 if (dimensions > 1) { 1885 GLint yBorder = (target == GL_TEXTURE_1D_ARRAY) ? 0 : destTex->Border; 1886 if (yoffset < -yBorder) { 1887 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(yoffset)", 1888 dimensions); 1889 return GL_TRUE; 1890 } 1891 if (yoffset + height > (GLint) destTex->Height + yBorder) { 1892 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(yoffset+height)", 1893 dimensions); 1894 return GL_TRUE; 1895 } 1896 } 1897 if (dimensions > 2) { 1898 GLint zBorder = (target == GL_TEXTURE_2D_ARRAY) ? 0 : destTex->Border; 1899 if (zoffset < -zBorder) { 1900 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage3D(zoffset)"); 1901 return GL_TRUE; 1902 } 1903 if (zoffset + depth > (GLint) destTex->Depth + zBorder) { 1904 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage3D(zoffset+depth)"); 1905 return GL_TRUE; 1906 } 1907 } 1908 1909 if (_mesa_is_format_compressed(destTex->TexFormat)) { 1910 GLuint bw, bh; 1911 1912 if (compressedteximage_only_format(ctx, destTex->InternalFormat)) { 1913 _mesa_error(ctx, GL_INVALID_OPERATION, 1914 "glTexSubImage%dD(no compression for format)", dimensions); 1915 return GL_TRUE; 1916 } 1917 1918 /* do tests which depend on compression block size */ 1919 _mesa_get_format_block_size(destTex->TexFormat, &bw, &bh); 1920 1921 /* offset must be multiple of block size */ 1922 if ((xoffset % bw != 0) || (yoffset % bh != 0)) { 1923 _mesa_error(ctx, GL_INVALID_OPERATION, 1924 "glTexSubImage%dD(xoffset = %d, yoffset = %d)", 1925 dimensions, xoffset, yoffset); 1926 return GL_TRUE; 1927 } 1928 /* size must be multiple of bw by bh or equal to whole texture size */ 1929 if ((width % bw != 0) && (GLuint) width != destTex->Width) { 1930 _mesa_error(ctx, GL_INVALID_OPERATION, 1931 "glTexSubImage%dD(width = %d)", dimensions, width); 1932 return GL_TRUE; 1933 } 1934 if ((height % bh != 0) && (GLuint) height != destTex->Height) { 1935 _mesa_error(ctx, GL_INVALID_OPERATION, 1936 "glTexSubImage%dD(height = %d)", dimensions, height); 1937 return GL_TRUE; 1938 } 1939 } 1940 1941 if (ctx->Version >= 30 || ctx->Extensions.EXT_texture_integer) { 1942 /* both source and dest must be integer-valued, or neither */ 1943 if (_mesa_is_format_integer_color(destTex->TexFormat) != 1944 _mesa_is_enum_format_integer(format)) { 1945 _mesa_error(ctx, GL_INVALID_OPERATION, 1946 "glTexSubImage%dD(integer/non-integer format mismatch)", 1947 dimensions); 1948 return GL_TRUE; 1949 } 1950 } 1951 1952 return GL_FALSE; 1953} 1954 1955 1956/** 1957 * Test glCopyTexImage[12]D() parameters for errors. 1958 * 1959 * \param ctx GL context. 1960 * \param dimensions texture image dimensions (must be 1, 2 or 3). 1961 * \param target texture target given by the user. 1962 * \param level image level given by the user. 1963 * \param internalFormat internal format given by the user. 1964 * \param width image width given by the user. 1965 * \param height image height given by the user. 1966 * \param border texture border. 1967 * 1968 * \return GL_TRUE if an error was detected, or GL_FALSE if no errors. 1969 * 1970 * Verifies each of the parameters against the constants specified in 1971 * __struct gl_contextRec::Const and the supported extensions, and according 1972 * to the OpenGL specification. 1973 */ 1974static GLboolean 1975copytexture_error_check( struct gl_context *ctx, GLuint dimensions, 1976 GLenum target, GLint level, GLint internalFormat, 1977 GLint width, GLint height, GLint border ) 1978{ 1979 const GLenum proxyTarget = get_proxy_target(target); 1980 const GLenum type = GL_FLOAT; 1981 GLboolean sizeOK; 1982 GLint baseFormat; 1983 1984 /* check target */ 1985 if (!legal_texsubimage_target(ctx, dimensions, target)) { 1986 _mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexImage%uD(target=%s)", 1987 dimensions, _mesa_lookup_enum_by_nr(target)); 1988 return GL_TRUE; 1989 } 1990 1991 /* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */ 1992 if (level < 0 || level >= MAX_TEXTURE_LEVELS) { 1993 _mesa_error(ctx, GL_INVALID_VALUE, 1994 "glCopyTexImage%dD(level=%d)", dimensions, level); 1995 return GL_TRUE; 1996 } 1997 1998 /* Check that the source buffer is complete */ 1999 if (_mesa_is_user_fbo(ctx->ReadBuffer)) { 2000 if (ctx->ReadBuffer->_Status == 0) { 2001 _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer); 2002 } 2003 if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) { 2004 _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT, 2005 "glCopyTexImage%dD(invalid readbuffer)", dimensions); 2006 return GL_TRUE; 2007 } 2008 2009 if (ctx->ReadBuffer->Visual.samples > 0) { 2010 _mesa_error(ctx, GL_INVALID_OPERATION, 2011 "glCopyTexImage%dD(multisample FBO)", 2012 dimensions); 2013 return GL_TRUE; 2014 } 2015 } 2016 2017 /* Check border */ 2018 if (border < 0 || border > 1 || 2019 ((target == GL_TEXTURE_RECTANGLE_NV || 2020 target == GL_PROXY_TEXTURE_RECTANGLE_NV) && border != 0)) { 2021 return GL_TRUE; 2022 } 2023 2024 baseFormat = _mesa_base_tex_format(ctx, internalFormat); 2025 if (baseFormat < 0) { 2026 _mesa_error(ctx, GL_INVALID_VALUE, 2027 "glCopyTexImage%dD(internalFormat)", dimensions); 2028 return GL_TRUE; 2029 } 2030 2031 if (!_mesa_source_buffer_exists(ctx, baseFormat)) { 2032 _mesa_error(ctx, GL_INVALID_OPERATION, 2033 "glCopyTexImage%dD(missing readbuffer)", dimensions); 2034 return GL_TRUE; 2035 } 2036 2037 /* From the EXT_texture_integer spec: 2038 * 2039 * "INVALID_OPERATION is generated by CopyTexImage* and CopyTexSubImage* 2040 * if the texture internalformat is an integer format and the read color 2041 * buffer is not an integer format, or if the internalformat is not an 2042 * integer format and the read color buffer is an integer format." 2043 */ 2044 if (_mesa_is_color_format(internalFormat)) { 2045 struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer; 2046 2047 if (_mesa_is_enum_format_integer(rb->InternalFormat) != 2048 _mesa_is_enum_format_integer(internalFormat)) { 2049 _mesa_error(ctx, GL_INVALID_OPERATION, 2050 "glCopyTexImage%dD(integer vs non-integer)", dimensions); 2051 return GL_TRUE; 2052 } 2053 } 2054 2055 /* Do size, level checking */ 2056 sizeOK = (proxyTarget == GL_PROXY_TEXTURE_CUBE_MAP_ARB) 2057 ? (width == height) : 1; 2058 2059 sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level, 2060 internalFormat, baseFormat, 2061 type, width, height, 2062 1, border); 2063 2064 if (!sizeOK) { 2065 if (dimensions == 1) { 2066 _mesa_error(ctx, GL_INVALID_VALUE, 2067 "glCopyTexImage1D(width=%d)", width); 2068 } 2069 else { 2070 ASSERT(dimensions == 2); 2071 _mesa_error(ctx, GL_INVALID_VALUE, 2072 "glCopyTexImage2D(width=%d, height=%d)", width, height); 2073 } 2074 return GL_TRUE; 2075 } 2076 2077 if (_mesa_is_compressed_format(ctx, internalFormat) || 2078 is_generic_compressed_format(internalFormat)) { 2079 if (!target_can_be_compressed(ctx, target, internalFormat)) { 2080 _mesa_error(ctx, GL_INVALID_ENUM, 2081 "glCopyTexImage%dD(target)", dimensions); 2082 return GL_TRUE; 2083 } 2084 if (compressedteximage_only_format(ctx, internalFormat)) { 2085 _mesa_error(ctx, GL_INVALID_OPERATION, 2086 "glCopyTexImage%dD(no compression for format)", dimensions); 2087 return GL_TRUE; 2088 } 2089 if (border != 0) { 2090 _mesa_error(ctx, GL_INVALID_OPERATION, 2091 "glCopyTexImage%dD(border!=0)", dimensions); 2092 return GL_TRUE; 2093 } 2094 } 2095 2096 if (!mutable_tex_object(ctx, target)) { 2097 _mesa_error(ctx, GL_INVALID_OPERATION, 2098 "glCopyTexImage%dD(immutable texture)", dimensions); 2099 return GL_TRUE; 2100 } 2101 2102 /* if we get here, the parameters are OK */ 2103 return GL_FALSE; 2104} 2105 2106 2107/** 2108 * Test glCopyTexSubImage[12]D() parameters for errors. 2109 * Note that this is the first part of error checking. 2110 * See also copytexsubimage_error_check2() below for the second part. 2111 * 2112 * \param ctx GL context. 2113 * \param dimensions texture image dimensions (must be 1, 2 or 3). 2114 * \param target texture target given by the user. 2115 * \param level image level given by the user. 2116 * 2117 * \return GL_TRUE if an error was detected, or GL_FALSE if no errors. 2118 */ 2119static GLboolean 2120copytexsubimage_error_check1( struct gl_context *ctx, GLuint dimensions, 2121 GLenum target, GLint level) 2122{ 2123 /* Check that the source buffer is complete */ 2124 if (_mesa_is_user_fbo(ctx->ReadBuffer)) { 2125 if (ctx->ReadBuffer->_Status == 0) { 2126 _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer); 2127 } 2128 if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) { 2129 _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT, 2130 "glCopyTexImage%dD(invalid readbuffer)", dimensions); 2131 return GL_TRUE; 2132 } 2133 2134 if (ctx->ReadBuffer->Visual.samples > 0) { 2135 _mesa_error(ctx, GL_INVALID_OPERATION, 2136 "glCopyTexSubImage%dD(multisample FBO)", 2137 dimensions); 2138 return GL_TRUE; 2139 } 2140 } 2141 2142 /* check target (proxies not allowed) */ 2143 if (!legal_texsubimage_target(ctx, dimensions, target)) { 2144 _mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexSubImage%uD(target=%s)", 2145 dimensions, _mesa_lookup_enum_by_nr(target)); 2146 return GL_TRUE; 2147 } 2148 2149 /* Check level */ 2150 if (level < 0 || level >= MAX_TEXTURE_LEVELS) { 2151 _mesa_error(ctx, GL_INVALID_VALUE, 2152 "glCopyTexSubImage%dD(level=%d)", dimensions, level); 2153 return GL_TRUE; 2154 } 2155 2156 return GL_FALSE; 2157} 2158 2159 2160/** 2161 * Second part of error checking for glCopyTexSubImage[12]D(). 2162 * \param xoffset sub-image x offset given by the user. 2163 * \param yoffset sub-image y offset given by the user. 2164 * \param zoffset sub-image z offset given by the user. 2165 * \param width image width given by the user. 2166 * \param height image height given by the user. 2167 */ 2168static GLboolean 2169copytexsubimage_error_check2( struct gl_context *ctx, GLuint dimensions, 2170 GLenum target, GLint level, 2171 GLint xoffset, GLint yoffset, GLint zoffset, 2172 GLsizei width, GLsizei height, 2173 const struct gl_texture_image *teximage ) 2174{ 2175 /* check that dest tex image exists */ 2176 if (!teximage) { 2177 _mesa_error(ctx, GL_INVALID_OPERATION, 2178 "glCopyTexSubImage%dD(undefined texture level: %d)", 2179 dimensions, level); 2180 return GL_TRUE; 2181 } 2182 2183 /* Check size */ 2184 if (width < 0) { 2185 _mesa_error(ctx, GL_INVALID_VALUE, 2186 "glCopyTexSubImage%dD(width=%d)", dimensions, width); 2187 return GL_TRUE; 2188 } 2189 if (dimensions > 1 && height < 0) { 2190 _mesa_error(ctx, GL_INVALID_VALUE, 2191 "glCopyTexSubImage%dD(height=%d)", dimensions, height); 2192 return GL_TRUE; 2193 } 2194 2195 /* check x/y offsets */ 2196 if (xoffset < -((GLint)teximage->Border)) { 2197 _mesa_error(ctx, GL_INVALID_VALUE, 2198 "glCopyTexSubImage%dD(xoffset=%d)", dimensions, xoffset); 2199 return GL_TRUE; 2200 } 2201 if (xoffset + width > (GLint) (teximage->Width + teximage->Border)) { 2202 _mesa_error(ctx, GL_INVALID_VALUE, 2203 "glCopyTexSubImage%dD(xoffset+width)", dimensions); 2204 return GL_TRUE; 2205 } 2206 if (dimensions > 1) { 2207 GLint yBorder = (target == GL_TEXTURE_1D_ARRAY) ? 0 : teximage->Border; 2208 if (yoffset < -yBorder) { 2209 _mesa_error(ctx, GL_INVALID_VALUE, 2210 "glCopyTexSubImage%dD(yoffset=%d)", dimensions, yoffset); 2211 return GL_TRUE; 2212 } 2213 /* NOTE: we're adding the border here, not subtracting! */ 2214 if (yoffset + height > (GLint) teximage->Height + yBorder) { 2215 _mesa_error(ctx, GL_INVALID_VALUE, 2216 "glCopyTexSubImage%dD(yoffset+height)", dimensions); 2217 return GL_TRUE; 2218 } 2219 } 2220 2221 /* check z offset */ 2222 if (dimensions > 2) { 2223 GLint zBorder = (target == GL_TEXTURE_2D_ARRAY) ? 0 : teximage->Border; 2224 if (zoffset < -zBorder) { 2225 _mesa_error(ctx, GL_INVALID_VALUE, 2226 "glCopyTexSubImage%dD(zoffset)", dimensions); 2227 return GL_TRUE; 2228 } 2229 if (zoffset > (GLint) teximage->Depth + zBorder) { 2230 _mesa_error(ctx, GL_INVALID_VALUE, 2231 "glCopyTexSubImage%dD(zoffset+depth)", dimensions); 2232 return GL_TRUE; 2233 } 2234 } 2235 2236 if (_mesa_is_format_compressed(teximage->TexFormat)) { 2237 if (compressedteximage_only_format(ctx, teximage->InternalFormat)) { 2238 _mesa_error(ctx, GL_INVALID_OPERATION, 2239 "glCopyTexSubImage%dD(no compression for format)", dimensions); 2240 return GL_TRUE; 2241 } 2242 /* offset must be multiple of 4 */ 2243 if ((xoffset & 3) || (yoffset & 3)) { 2244 _mesa_error(ctx, GL_INVALID_VALUE, 2245 "glCopyTexSubImage%dD(xoffset or yoffset)", dimensions); 2246 return GL_TRUE; 2247 } 2248 /* size must be multiple of 4 */ 2249 if ((width & 3) != 0 && (GLuint) width != teximage->Width) { 2250 _mesa_error(ctx, GL_INVALID_VALUE, 2251 "glCopyTexSubImage%dD(width)", dimensions); 2252 return GL_TRUE; 2253 } 2254 if ((height & 3) != 0 && (GLuint) height != teximage->Height) { 2255 _mesa_error(ctx, GL_INVALID_VALUE, 2256 "glCopyTexSubImage%dD(height)", dimensions); 2257 return GL_TRUE; 2258 } 2259 } 2260 2261 if (teximage->InternalFormat == GL_YCBCR_MESA) { 2262 _mesa_error(ctx, GL_INVALID_OPERATION, "glCopyTexSubImage2D"); 2263 return GL_TRUE; 2264 } 2265 2266 if (!_mesa_source_buffer_exists(ctx, teximage->_BaseFormat)) { 2267 _mesa_error(ctx, GL_INVALID_OPERATION, 2268 "glCopyTexSubImage%dD(missing readbuffer, format=0x%x)", 2269 dimensions, teximage->_BaseFormat); 2270 return GL_TRUE; 2271 } 2272 2273 /* From the EXT_texture_integer spec: 2274 * 2275 * "INVALID_OPERATION is generated by CopyTexImage* and CopyTexSubImage* 2276 * if the texture internalformat is an integer format and the read color 2277 * buffer is not an integer format, or if the internalformat is not an 2278 * integer format and the read color buffer is an integer format." 2279 */ 2280 if (_mesa_is_color_format(teximage->InternalFormat)) { 2281 struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer; 2282 2283 if (_mesa_is_format_integer_color(rb->Format) != 2284 _mesa_is_format_integer_color(teximage->TexFormat)) { 2285 _mesa_error(ctx, GL_INVALID_OPERATION, 2286 "glCopyTexImage%dD(integer vs non-integer)", dimensions); 2287 return GL_TRUE; 2288 } 2289 } 2290 2291 /* if we get here, the parameters are OK */ 2292 return GL_FALSE; 2293} 2294 2295 2296/** Callback info for walking over FBO hash table */ 2297struct cb_info 2298{ 2299 struct gl_context *ctx; 2300 struct gl_texture_object *texObj; 2301 GLuint level, face; 2302}; 2303 2304 2305/** 2306 * Check render to texture callback. Called from _mesa_HashWalk(). 2307 */ 2308static void 2309check_rtt_cb(GLuint key, void *data, void *userData) 2310{ 2311 struct gl_framebuffer *fb = (struct gl_framebuffer *) data; 2312 const struct cb_info *info = (struct cb_info *) userData; 2313 struct gl_context *ctx = info->ctx; 2314 const struct gl_texture_object *texObj = info->texObj; 2315 const GLuint level = info->level, face = info->face; 2316 2317 /* If this is a user-created FBO */ 2318 if (_mesa_is_user_fbo(fb)) { 2319 GLuint i; 2320 /* check if any of the FBO's attachments point to 'texObj' */ 2321 for (i = 0; i < BUFFER_COUNT; i++) { 2322 struct gl_renderbuffer_attachment *att = fb->Attachment + i; 2323 if (att->Type == GL_TEXTURE && 2324 att->Texture == texObj && 2325 att->TextureLevel == level && 2326 att->CubeMapFace == face) { 2327 ASSERT(_mesa_get_attachment_teximage(att)); 2328 /* Tell driver about the new renderbuffer texture */ 2329 ctx->Driver.RenderTexture(ctx, ctx->DrawBuffer, att); 2330 /* Mark fb status as indeterminate to force re-validation */ 2331 fb->_Status = 0; 2332 } 2333 } 2334 } 2335} 2336 2337 2338/** 2339 * When a texture image is specified we have to check if it's bound to 2340 * any framebuffer objects (render to texture) in order to detect changes 2341 * in size or format since that effects FBO completeness. 2342 * Any FBOs rendering into the texture must be re-validated. 2343 */ 2344void 2345_mesa_update_fbo_texture(struct gl_context *ctx, 2346 struct gl_texture_object *texObj, 2347 GLuint face, GLuint level) 2348{ 2349 /* Only check this texture if it's been marked as RenderToTexture */ 2350 if (texObj->_RenderToTexture) { 2351 struct cb_info info; 2352 info.ctx = ctx; 2353 info.texObj = texObj; 2354 info.level = level; 2355 info.face = face; 2356 _mesa_HashWalk(ctx->Shared->FrameBuffers, check_rtt_cb, &info); 2357 } 2358} 2359 2360 2361/** 2362 * If the texture object's GenerateMipmap flag is set and we've 2363 * changed the texture base level image, regenerate the rest of the 2364 * mipmap levels now. 2365 */ 2366static inline void 2367check_gen_mipmap(struct gl_context *ctx, GLenum target, 2368 struct gl_texture_object *texObj, GLint level) 2369{ 2370 ASSERT(target != GL_TEXTURE_CUBE_MAP); 2371 if (texObj->GenerateMipmap && 2372 level == texObj->BaseLevel && 2373 level < texObj->MaxLevel) { 2374 ASSERT(ctx->Driver.GenerateMipmap); 2375 ctx->Driver.GenerateMipmap(ctx, target, texObj); 2376 } 2377} 2378 2379 2380/** Debug helper: override the user-requested internal format */ 2381static GLenum 2382override_internal_format(GLenum internalFormat, GLint width, GLint height) 2383{ 2384#if 0 2385 if (internalFormat == GL_RGBA16F_ARB || 2386 internalFormat == GL_RGBA32F_ARB) { 2387 printf("Convert rgba float tex to int %d x %d\n", width, height); 2388 return GL_RGBA; 2389 } 2390 else if (internalFormat == GL_RGB16F_ARB || 2391 internalFormat == GL_RGB32F_ARB) { 2392 printf("Convert rgb float tex to int %d x %d\n", width, height); 2393 return GL_RGB; 2394 } 2395 else if (internalFormat == GL_LUMINANCE_ALPHA16F_ARB || 2396 internalFormat == GL_LUMINANCE_ALPHA32F_ARB) { 2397 printf("Convert luminance float tex to int %d x %d\n", width, height); 2398 return GL_LUMINANCE_ALPHA; 2399 } 2400 else if (internalFormat == GL_LUMINANCE16F_ARB || 2401 internalFormat == GL_LUMINANCE32F_ARB) { 2402 printf("Convert luminance float tex to int %d x %d\n", width, height); 2403 return GL_LUMINANCE; 2404 } 2405 else if (internalFormat == GL_ALPHA16F_ARB || 2406 internalFormat == GL_ALPHA32F_ARB) { 2407 printf("Convert luminance float tex to int %d x %d\n", width, height); 2408 return GL_ALPHA; 2409 } 2410 /* 2411 else if (internalFormat == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT) { 2412 internalFormat = GL_RGBA; 2413 } 2414 */ 2415 else { 2416 return internalFormat; 2417 } 2418#else 2419 return internalFormat; 2420#endif 2421} 2422 2423 2424/** 2425 * Choose the actual hardware format for a texture image. 2426 * Try to use the same format as the previous image level when possible. 2427 * Otherwise, ask the driver for the best format. 2428 * It's important to try to choose a consistant format for all levels 2429 * for efficient texture memory layout/allocation. In particular, this 2430 * comes up during automatic mipmap generation. 2431 */ 2432gl_format 2433_mesa_choose_texture_format(struct gl_context *ctx, 2434 struct gl_texture_object *texObj, 2435 GLenum target, GLint level, 2436 GLenum internalFormat, GLenum format, GLenum type) 2437{ 2438 gl_format f; 2439 2440 /* see if we've already chosen a format for the previous level */ 2441 if (level > 0) { 2442 struct gl_texture_image *prevImage = 2443 _mesa_select_tex_image(ctx, texObj, target, level - 1); 2444 /* See if the prev level is defined and has an internal format which 2445 * matches the new internal format. 2446 */ 2447 if (prevImage && 2448 prevImage->Width > 0 && 2449 prevImage->InternalFormat == internalFormat) { 2450 /* use the same format */ 2451 ASSERT(prevImage->TexFormat != MESA_FORMAT_NONE); 2452 return prevImage->TexFormat; 2453 } 2454 } 2455 2456 /* choose format from scratch */ 2457 f = ctx->Driver.ChooseTextureFormat(ctx, internalFormat, format, type); 2458 ASSERT(f != MESA_FORMAT_NONE); 2459 return f; 2460} 2461 2462/** 2463 * Adjust pixel unpack params and image dimensions to strip off the 2464 * one-pixel texture border. 2465 * 2466 * Gallium and intel don't support texture borders. They've seldem been used 2467 * and seldom been implemented correctly anyway. 2468 * 2469 * \param unpackNew returns the new pixel unpack parameters 2470 */ 2471static void 2472strip_texture_border(GLenum target, 2473 GLint *width, GLint *height, GLint *depth, 2474 const struct gl_pixelstore_attrib *unpack, 2475 struct gl_pixelstore_attrib *unpackNew) 2476{ 2477 assert(width); 2478 assert(height); 2479 assert(depth); 2480 2481 *unpackNew = *unpack; 2482 2483 if (unpackNew->RowLength == 0) 2484 unpackNew->RowLength = *width; 2485 2486 if (unpackNew->ImageHeight == 0) 2487 unpackNew->ImageHeight = *height; 2488 2489 assert(*width >= 3); 2490 unpackNew->SkipPixels++; /* skip the border */ 2491 *width = *width - 2; /* reduce the width by two border pixels */ 2492 2493 /* The min height of a texture with a border is 3 */ 2494 if (*height >= 3 && target != GL_TEXTURE_1D_ARRAY) { 2495 unpackNew->SkipRows++; /* skip the border */ 2496 *height = *height - 2; /* reduce the height by two border pixels */ 2497 } 2498 2499 if (*depth >= 3 && target != GL_TEXTURE_2D_ARRAY) { 2500 unpackNew->SkipImages++; /* skip the border */ 2501 *depth = *depth - 2; /* reduce the depth by two border pixels */ 2502 } 2503} 2504 2505/** 2506 * Common code to implement all the glTexImage1D/2D/3D functions. 2507 */ 2508static void 2509teximage(struct gl_context *ctx, GLuint dims, 2510 GLenum target, GLint level, GLint internalFormat, 2511 GLsizei width, GLsizei height, GLsizei depth, 2512 GLint border, GLenum format, GLenum type, 2513 const GLvoid *pixels) 2514{ 2515 GLboolean error; 2516 struct gl_pixelstore_attrib unpack_no_border; 2517 const struct gl_pixelstore_attrib *unpack = &ctx->Unpack; 2518 2519 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); 2520 2521 if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) 2522 _mesa_debug(ctx, "glTexImage%uD %s %d %s %d %d %d %d %s %s %p\n", 2523 dims, 2524 _mesa_lookup_enum_by_nr(target), level, 2525 _mesa_lookup_enum_by_nr(internalFormat), 2526 width, height, depth, border, 2527 _mesa_lookup_enum_by_nr(format), 2528 _mesa_lookup_enum_by_nr(type), pixels); 2529 2530 internalFormat = override_internal_format(internalFormat, width, height); 2531 2532 /* target error checking */ 2533 if (!legal_teximage_target(ctx, dims, target)) { 2534 _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage%uD(target=%s)", 2535 dims, _mesa_lookup_enum_by_nr(target)); 2536 return; 2537 } 2538 2539 /* general error checking */ 2540 error = texture_error_check(ctx, dims, target, level, internalFormat, 2541 format, type, width, height, depth, border); 2542 2543 if (_mesa_is_proxy_texture(target)) { 2544 /* Proxy texture: just clear or set state depending on error checking */ 2545 struct gl_texture_image *texImage = 2546 _mesa_get_proxy_tex_image(ctx, target, level); 2547 2548 if (error) { 2549 /* when error, clear all proxy texture image parameters */ 2550 if (texImage) 2551 clear_teximage_fields(texImage); 2552 } 2553 else { 2554 /* no error, set the tex image parameters */ 2555 struct gl_texture_object *texObj = 2556 _mesa_get_current_tex_object(ctx, target); 2557 gl_format texFormat = _mesa_choose_texture_format(ctx, texObj, 2558 target, level, 2559 internalFormat, 2560 format, type); 2561 2562 if (legal_texture_size(ctx, texFormat, width, height, depth)) { 2563 _mesa_init_teximage_fields(ctx, texImage, width, height, 2564 depth, border, internalFormat, 2565 texFormat); 2566 } 2567 else if (texImage) { 2568 clear_teximage_fields(texImage); 2569 } 2570 } 2571 } 2572 else { 2573 /* non-proxy target */ 2574 const GLuint face = _mesa_tex_target_to_face(target); 2575 struct gl_texture_object *texObj; 2576 struct gl_texture_image *texImage; 2577 2578 if (error) { 2579 return; /* error was recorded */ 2580 } 2581 2582 /* Allow a hardware driver to just strip out the border, to provide 2583 * reliable but slightly incorrect hardware rendering instead of 2584 * rarely-tested software fallback rendering. 2585 */ 2586 if (border && ctx->Const.StripTextureBorder) { 2587 strip_texture_border(target, &width, &height, &depth, unpack, 2588 &unpack_no_border); 2589 border = 0; 2590 unpack = &unpack_no_border; 2591 } 2592 2593 if (ctx->NewState & _NEW_PIXEL) 2594 _mesa_update_state(ctx); 2595 2596 texObj = _mesa_get_current_tex_object(ctx, target); 2597 2598 _mesa_lock_texture(ctx, texObj); 2599 { 2600 texImage = _mesa_get_tex_image(ctx, texObj, target, level); 2601 2602 if (!texImage) { 2603 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims); 2604 } 2605 else { 2606 gl_format texFormat; 2607 2608 ctx->Driver.FreeTextureImageBuffer(ctx, texImage); 2609 2610 texFormat = _mesa_choose_texture_format(ctx, texObj, target, level, 2611 internalFormat, format, 2612 type); 2613 2614 if (legal_texture_size(ctx, texFormat, width, height, depth)) { 2615 _mesa_init_teximage_fields(ctx, texImage, 2616 width, height, depth, 2617 border, internalFormat, texFormat); 2618 2619 /* Give the texture to the driver. <pixels> may be null. */ 2620 ctx->Driver.TexImage(ctx, dims, texImage, format, 2621 type, pixels, unpack); 2622 2623 check_gen_mipmap(ctx, target, texObj, level); 2624 2625 _mesa_update_fbo_texture(ctx, texObj, face, level); 2626 2627 _mesa_dirty_texobj(ctx, texObj, GL_TRUE); 2628 } 2629 else { 2630 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims); 2631 } 2632 } 2633 } 2634 _mesa_unlock_texture(ctx, texObj); 2635 } 2636} 2637 2638 2639/* 2640 * Called from the API. Note that width includes the border. 2641 */ 2642void GLAPIENTRY 2643_mesa_TexImage1D( GLenum target, GLint level, GLint internalFormat, 2644 GLsizei width, GLint border, GLenum format, 2645 GLenum type, const GLvoid *pixels ) 2646{ 2647 GET_CURRENT_CONTEXT(ctx); 2648 teximage(ctx, 1, target, level, internalFormat, width, 1, 1, 2649 border, format, type, pixels); 2650} 2651 2652 2653void GLAPIENTRY 2654_mesa_TexImage2D( GLenum target, GLint level, GLint internalFormat, 2655 GLsizei width, GLsizei height, GLint border, 2656 GLenum format, GLenum type, 2657 const GLvoid *pixels ) 2658{ 2659 GET_CURRENT_CONTEXT(ctx); 2660 teximage(ctx, 2, target, level, internalFormat, width, height, 1, 2661 border, format, type, pixels); 2662} 2663 2664 2665/* 2666 * Called by the API or display list executor. 2667 * Note that width and height include the border. 2668 */ 2669void GLAPIENTRY 2670_mesa_TexImage3D( GLenum target, GLint level, GLint internalFormat, 2671 GLsizei width, GLsizei height, GLsizei depth, 2672 GLint border, GLenum format, GLenum type, 2673 const GLvoid *pixels ) 2674{ 2675 GET_CURRENT_CONTEXT(ctx); 2676 teximage(ctx, 3, target, level, internalFormat, width, height, depth, 2677 border, format, type, pixels); 2678} 2679 2680 2681void GLAPIENTRY 2682_mesa_TexImage3DEXT( GLenum target, GLint level, GLenum internalFormat, 2683 GLsizei width, GLsizei height, GLsizei depth, 2684 GLint border, GLenum format, GLenum type, 2685 const GLvoid *pixels ) 2686{ 2687 _mesa_TexImage3D(target, level, (GLint) internalFormat, width, height, 2688 depth, border, format, type, pixels); 2689} 2690 2691 2692#if FEATURE_OES_EGL_image 2693void GLAPIENTRY 2694_mesa_EGLImageTargetTexture2DOES (GLenum target, GLeglImageOES image) 2695{ 2696 struct gl_texture_object *texObj; 2697 struct gl_texture_image *texImage; 2698 GET_CURRENT_CONTEXT(ctx); 2699 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); 2700 2701 if ((target == GL_TEXTURE_2D && 2702 !ctx->Extensions.OES_EGL_image) || 2703 (target == GL_TEXTURE_EXTERNAL_OES && 2704 !ctx->Extensions.OES_EGL_image_external)) { 2705 _mesa_error(ctx, GL_INVALID_ENUM, 2706 "glEGLImageTargetTexture2D(target=%d)", target); 2707 return; 2708 } 2709 2710 if (ctx->NewState & _NEW_PIXEL) 2711 _mesa_update_state(ctx); 2712 2713 texObj = _mesa_get_current_tex_object(ctx, target); 2714 _mesa_lock_texture(ctx, texObj); 2715 2716 if (texObj->Immutable) { 2717 _mesa_error(ctx, GL_INVALID_OPERATION, 2718 "glEGLImageTargetTexture2D(texture is immutable)"); 2719 _mesa_unlock_texture(ctx, texObj); 2720 return; 2721 } 2722 2723 texImage = _mesa_get_tex_image(ctx, texObj, target, 0); 2724 if (!texImage) { 2725 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glEGLImageTargetTexture2D"); 2726 } else { 2727 ctx->Driver.FreeTextureImageBuffer(ctx, texImage); 2728 2729 ctx->Driver.EGLImageTargetTexture2D(ctx, target, 2730 texObj, texImage, image); 2731 2732 _mesa_dirty_texobj(ctx, texObj, GL_TRUE); 2733 } 2734 _mesa_unlock_texture(ctx, texObj); 2735 2736} 2737#endif 2738 2739 2740 2741/** 2742 * Implement all the glTexSubImage1/2/3D() functions. 2743 */ 2744static void 2745texsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level, 2746 GLint xoffset, GLint yoffset, GLint zoffset, 2747 GLsizei width, GLsizei height, GLsizei depth, 2748 GLenum format, GLenum type, const GLvoid *pixels ) 2749{ 2750 struct gl_texture_object *texObj; 2751 struct gl_texture_image *texImage; 2752 2753 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); 2754 2755 if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) 2756 _mesa_debug(ctx, "glTexSubImage%uD %s %d %d %d %d %d %d %d %s %s %p\n", 2757 dims, 2758 _mesa_lookup_enum_by_nr(target), level, 2759 xoffset, yoffset, zoffset, width, height, depth, 2760 _mesa_lookup_enum_by_nr(format), 2761 _mesa_lookup_enum_by_nr(type), pixels); 2762 2763 /* check target (proxies not allowed) */ 2764 if (!legal_texsubimage_target(ctx, dims, target)) { 2765 _mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage%uD(target=%s)", 2766 dims, _mesa_lookup_enum_by_nr(target)); 2767 return; 2768 } 2769 2770 if (ctx->NewState & _NEW_PIXEL) 2771 _mesa_update_state(ctx); 2772 2773 if (subtexture_error_check(ctx, dims, target, level, xoffset, yoffset, zoffset, 2774 width, height, depth, format, type)) { 2775 return; /* error was detected */ 2776 } 2777 2778 texObj = _mesa_get_current_tex_object(ctx, target); 2779 2780 _mesa_lock_texture(ctx, texObj); 2781 { 2782 texImage = _mesa_select_tex_image(ctx, texObj, target, level); 2783 2784 if (subtexture_error_check2(ctx, dims, target, level, 2785 xoffset, yoffset, zoffset, 2786 width, height, depth, 2787 format, type, texImage)) { 2788 /* error was recorded */ 2789 } 2790 else if (width > 0 && height > 0 && depth > 0) { 2791 /* If we have a border, offset=-1 is legal. Bias by border width. */ 2792 switch (dims) { 2793 case 3: 2794 if (target != GL_TEXTURE_2D_ARRAY) 2795 zoffset += texImage->Border; 2796 /* fall-through */ 2797 case 2: 2798 if (target != GL_TEXTURE_1D_ARRAY) 2799 yoffset += texImage->Border; 2800 /* fall-through */ 2801 case 1: 2802 xoffset += texImage->Border; 2803 } 2804 2805 ctx->Driver.TexSubImage(ctx, dims, texImage, 2806 xoffset, yoffset, zoffset, 2807 width, height, depth, 2808 format, type, pixels, &ctx->Unpack); 2809 2810 check_gen_mipmap(ctx, target, texObj, level); 2811 2812 ctx->NewState |= _NEW_TEXTURE; 2813 } 2814 } 2815 _mesa_unlock_texture(ctx, texObj); 2816} 2817 2818 2819void GLAPIENTRY 2820_mesa_TexSubImage1D( GLenum target, GLint level, 2821 GLint xoffset, GLsizei width, 2822 GLenum format, GLenum type, 2823 const GLvoid *pixels ) 2824{ 2825 GET_CURRENT_CONTEXT(ctx); 2826 texsubimage(ctx, 1, target, level, 2827 xoffset, 0, 0, 2828 width, 1, 1, 2829 format, type, pixels); 2830} 2831 2832 2833void GLAPIENTRY 2834_mesa_TexSubImage2D( GLenum target, GLint level, 2835 GLint xoffset, GLint yoffset, 2836 GLsizei width, GLsizei height, 2837 GLenum format, GLenum type, 2838 const GLvoid *pixels ) 2839{ 2840 GET_CURRENT_CONTEXT(ctx); 2841 texsubimage(ctx, 2, target, level, 2842 xoffset, yoffset, 0, 2843 width, height, 1, 2844 format, type, pixels); 2845} 2846 2847 2848 2849void GLAPIENTRY 2850_mesa_TexSubImage3D( GLenum target, GLint level, 2851 GLint xoffset, GLint yoffset, GLint zoffset, 2852 GLsizei width, GLsizei height, GLsizei depth, 2853 GLenum format, GLenum type, 2854 const GLvoid *pixels ) 2855{ 2856 GET_CURRENT_CONTEXT(ctx); 2857 texsubimage(ctx, 3, target, level, 2858 xoffset, yoffset, zoffset, 2859 width, height, depth, 2860 format, type, pixels); 2861} 2862 2863 2864 2865/** 2866 * For glCopyTexSubImage, return the source renderbuffer to copy texel data 2867 * from. This depends on whether the texture contains color or depth values. 2868 */ 2869static struct gl_renderbuffer * 2870get_copy_tex_image_source(struct gl_context *ctx, gl_format texFormat) 2871{ 2872 if (_mesa_get_format_bits(texFormat, GL_DEPTH_BITS) > 0) { 2873 /* reading from depth/stencil buffer */ 2874 return ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Renderbuffer; 2875 } 2876 else { 2877 /* copying from color buffer */ 2878 return ctx->ReadBuffer->_ColorReadBuffer; 2879 } 2880} 2881 2882 2883 2884/** 2885 * Implement the glCopyTexImage1/2D() functions. 2886 */ 2887static void 2888copyteximage(struct gl_context *ctx, GLuint dims, 2889 GLenum target, GLint level, GLenum internalFormat, 2890 GLint x, GLint y, GLsizei width, GLsizei height, GLint border ) 2891{ 2892 struct gl_texture_object *texObj; 2893 struct gl_texture_image *texImage; 2894 const GLuint face = _mesa_tex_target_to_face(target); 2895 2896 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); 2897 2898 if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) 2899 _mesa_debug(ctx, "glCopyTexImage%uD %s %d %s %d %d %d %d %d\n", 2900 dims, 2901 _mesa_lookup_enum_by_nr(target), level, 2902 _mesa_lookup_enum_by_nr(internalFormat), 2903 x, y, width, height, border); 2904 2905 if (ctx->NewState & NEW_COPY_TEX_STATE) 2906 _mesa_update_state(ctx); 2907 2908 if (copytexture_error_check(ctx, dims, target, level, internalFormat, 2909 width, height, border)) 2910 return; 2911 2912 texObj = _mesa_get_current_tex_object(ctx, target); 2913 2914 if (border && ctx->Const.StripTextureBorder) { 2915 x += border; 2916 width -= border * 2; 2917 if (dims == 2) { 2918 y += border; 2919 height -= border * 2; 2920 } 2921 border = 0; 2922 } 2923 2924 _mesa_lock_texture(ctx, texObj); 2925 { 2926 texImage = _mesa_get_tex_image(ctx, texObj, target, level); 2927 2928 if (!texImage) { 2929 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims); 2930 } 2931 else { 2932 /* choose actual hw format */ 2933 gl_format texFormat = _mesa_choose_texture_format(ctx, texObj, 2934 target, level, 2935 internalFormat, 2936 GL_NONE, GL_NONE); 2937 2938 if (legal_texture_size(ctx, texFormat, width, height, 1)) { 2939 GLint srcX = x, srcY = y, dstX = 0, dstY = 0, dstZ = 0; 2940 2941 /* Free old texture image */ 2942 ctx->Driver.FreeTextureImageBuffer(ctx, texImage); 2943 2944 _mesa_init_teximage_fields(ctx, texImage, width, height, 1, 2945 border, internalFormat, texFormat); 2946 2947 /* Allocate texture memory (no pixel data yet) */ 2948 ctx->Driver.TexImage(ctx, dims, texImage, 2949 GL_NONE, GL_NONE, 2950 NULL, &ctx->Unpack); 2951 2952 if (_mesa_clip_copytexsubimage(ctx, &dstX, &dstY, &srcX, &srcY, 2953 &width, &height)) { 2954 struct gl_renderbuffer *srcRb = 2955 get_copy_tex_image_source(ctx, texImage->TexFormat); 2956 2957 ctx->Driver.CopyTexSubImage(ctx, dims, texImage, dstX, dstY, dstZ, 2958 srcRb, srcX, srcY, width, height); 2959 } 2960 2961 check_gen_mipmap(ctx, target, texObj, level); 2962 2963 _mesa_update_fbo_texture(ctx, texObj, face, level); 2964 2965 _mesa_dirty_texobj(ctx, texObj, GL_TRUE); 2966 } 2967 else { 2968 /* probably too large of image */ 2969 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims); 2970 } 2971 } 2972 } 2973 _mesa_unlock_texture(ctx, texObj); 2974} 2975 2976 2977 2978void GLAPIENTRY 2979_mesa_CopyTexImage1D( GLenum target, GLint level, 2980 GLenum internalFormat, 2981 GLint x, GLint y, 2982 GLsizei width, GLint border ) 2983{ 2984 GET_CURRENT_CONTEXT(ctx); 2985 copyteximage(ctx, 1, target, level, internalFormat, x, y, width, 1, border); 2986} 2987 2988 2989 2990void GLAPIENTRY 2991_mesa_CopyTexImage2D( GLenum target, GLint level, GLenum internalFormat, 2992 GLint x, GLint y, GLsizei width, GLsizei height, 2993 GLint border ) 2994{ 2995 GET_CURRENT_CONTEXT(ctx); 2996 copyteximage(ctx, 2, target, level, internalFormat, 2997 x, y, width, height, border); 2998} 2999 3000 3001 3002/** 3003 * Implementation for glCopyTexSubImage1/2/3D() functions. 3004 */ 3005static void 3006copytexsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level, 3007 GLint xoffset, GLint yoffset, GLint zoffset, 3008 GLint x, GLint y, GLsizei width, GLsizei height) 3009{ 3010 struct gl_texture_object *texObj; 3011 struct gl_texture_image *texImage; 3012 3013 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); 3014 3015 if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) 3016 _mesa_debug(ctx, "glCopyTexSubImage%uD %s %d %d %d %d %d %d %d %d\n", 3017 dims, 3018 _mesa_lookup_enum_by_nr(target), 3019 level, xoffset, yoffset, zoffset, x, y, width, height); 3020 3021 if (ctx->NewState & NEW_COPY_TEX_STATE) 3022 _mesa_update_state(ctx); 3023 3024 if (copytexsubimage_error_check1(ctx, dims, target, level)) 3025 return; 3026 3027 texObj = _mesa_get_current_tex_object(ctx, target); 3028 3029 _mesa_lock_texture(ctx, texObj); 3030 { 3031 texImage = _mesa_select_tex_image(ctx, texObj, target, level); 3032 3033 if (copytexsubimage_error_check2(ctx, dims, target, level, xoffset, yoffset, 3034 zoffset, width, height, texImage)) { 3035 /* error was recored */ 3036 } 3037 else { 3038 /* If we have a border, offset=-1 is legal. Bias by border width. */ 3039 switch (dims) { 3040 case 3: 3041 if (target != GL_TEXTURE_2D_ARRAY) 3042 zoffset += texImage->Border; 3043 /* fall-through */ 3044 case 2: 3045 if (target != GL_TEXTURE_1D_ARRAY) 3046 yoffset += texImage->Border; 3047 /* fall-through */ 3048 case 1: 3049 xoffset += texImage->Border; 3050 } 3051 3052 if (_mesa_clip_copytexsubimage(ctx, &xoffset, &yoffset, &x, &y, 3053 &width, &height)) { 3054 struct gl_renderbuffer *srcRb = 3055 get_copy_tex_image_source(ctx, texImage->TexFormat); 3056 3057 ctx->Driver.CopyTexSubImage(ctx, dims, texImage, 3058 xoffset, yoffset, zoffset, 3059 srcRb, x, y, width, height); 3060 3061 check_gen_mipmap(ctx, target, texObj, level); 3062 3063 ctx->NewState |= _NEW_TEXTURE; 3064 } 3065 } 3066 } 3067 _mesa_unlock_texture(ctx, texObj); 3068} 3069 3070 3071void GLAPIENTRY 3072_mesa_CopyTexSubImage1D( GLenum target, GLint level, 3073 GLint xoffset, GLint x, GLint y, GLsizei width ) 3074{ 3075 GET_CURRENT_CONTEXT(ctx); 3076 copytexsubimage(ctx, 1, target, level, xoffset, 0, 0, x, y, width, 1); 3077} 3078 3079 3080 3081void GLAPIENTRY 3082_mesa_CopyTexSubImage2D( GLenum target, GLint level, 3083 GLint xoffset, GLint yoffset, 3084 GLint x, GLint y, GLsizei width, GLsizei height ) 3085{ 3086 GET_CURRENT_CONTEXT(ctx); 3087 copytexsubimage(ctx, 2, target, level, xoffset, yoffset, 0, x, y, 3088 width, height); 3089} 3090 3091 3092 3093void GLAPIENTRY 3094_mesa_CopyTexSubImage3D( GLenum target, GLint level, 3095 GLint xoffset, GLint yoffset, GLint zoffset, 3096 GLint x, GLint y, GLsizei width, GLsizei height ) 3097{ 3098 GET_CURRENT_CONTEXT(ctx); 3099 copytexsubimage(ctx, 3, target, level, xoffset, yoffset, zoffset, 3100 x, y, width, height); 3101} 3102 3103 3104 3105 3106/**********************************************************************/ 3107/****** Compressed Textures ******/ 3108/**********************************************************************/ 3109 3110 3111/** 3112 * Return expected size of a compressed texture. 3113 */ 3114static GLuint 3115compressed_tex_size(GLsizei width, GLsizei height, GLsizei depth, 3116 GLenum glformat) 3117{ 3118 gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat); 3119 return _mesa_format_image_size(mesaFormat, width, height, depth); 3120} 3121 3122 3123/* 3124 * Return compressed texture block size, in pixels. 3125 */ 3126static void 3127get_compressed_block_size(GLenum glformat, GLuint *bw, GLuint *bh) 3128{ 3129 gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat); 3130 _mesa_get_format_block_size(mesaFormat, bw, bh); 3131} 3132 3133 3134/** 3135 * Error checking for glCompressedTexImage[123]D(). 3136 * \param reason returns reason for error, if any 3137 * \return error code or GL_NO_ERROR. 3138 */ 3139static GLenum 3140compressed_texture_error_check(struct gl_context *ctx, GLint dimensions, 3141 GLenum target, GLint level, 3142 GLenum internalFormat, GLsizei width, 3143 GLsizei height, GLsizei depth, GLint border, 3144 GLsizei imageSize, char **reason) 3145{ 3146 const GLenum proxyTarget = get_proxy_target(target); 3147 const GLint maxLevels = _mesa_max_texture_levels(ctx, target); 3148 GLint expectedSize; 3149 GLenum choose_format; 3150 GLenum choose_type; 3151 GLenum proxy_format; 3152 3153 *reason = ""; /* no error */ 3154 3155 if (!target_can_be_compressed(ctx, target, internalFormat)) { 3156 *reason = "target"; 3157 return GL_INVALID_ENUM; 3158 } 3159 3160 /* This will detect any invalid internalFormat value */ 3161 if (!_mesa_is_compressed_format(ctx, internalFormat)) { 3162 *reason = "internalFormat"; 3163 return GL_INVALID_ENUM; 3164 } 3165 3166 switch (internalFormat) { 3167#if FEATURE_ES 3168 case GL_PALETTE4_RGB8_OES: 3169 case GL_PALETTE4_RGBA8_OES: 3170 case GL_PALETTE4_R5_G6_B5_OES: 3171 case GL_PALETTE4_RGBA4_OES: 3172 case GL_PALETTE4_RGB5_A1_OES: 3173 case GL_PALETTE8_RGB8_OES: 3174 case GL_PALETTE8_RGBA8_OES: 3175 case GL_PALETTE8_R5_G6_B5_OES: 3176 case GL_PALETTE8_RGBA4_OES: 3177 case GL_PALETTE8_RGB5_A1_OES: 3178 _mesa_cpal_compressed_format_type(internalFormat, &choose_format, 3179 &choose_type); 3180 proxy_format = choose_format; 3181 3182 /* check level */ 3183 if (level > 0 || level < -maxLevels) { 3184 *reason = "level"; 3185 return GL_INVALID_VALUE; 3186 } 3187 3188 if (dimensions != 2) { 3189 *reason = "compressed paletted textures must be 2D"; 3190 return GL_INVALID_OPERATION; 3191 } 3192 3193 /* Figure out the expected texture size (in bytes). This will be 3194 * checked against the actual size later. 3195 */ 3196 expectedSize = _mesa_cpal_compressed_size(level, internalFormat, 3197 width, height); 3198 3199 /* This is for the benefit of the TestProxyTexImage below. It expects 3200 * level to be non-negative. OES_compressed_paletted_texture uses a 3201 * weird mechanism where the level specified to glCompressedTexImage2D 3202 * is -(n-1) number of levels in the texture, and the data specifies the 3203 * complete mipmap stack. This is done to ensure the palette is the 3204 * same for all levels. 3205 */ 3206 level = -level; 3207 break; 3208#endif 3209 3210 default: 3211 choose_format = GL_NONE; 3212 choose_type = GL_NONE; 3213 proxy_format = internalFormat; 3214 3215 /* check level */ 3216 if (level < 0 || level >= maxLevels) { 3217 *reason = "level"; 3218 return GL_INVALID_VALUE; 3219 } 3220 3221 /* Figure out the expected texture size (in bytes). This will be 3222 * checked against the actual size later. 3223 */ 3224 expectedSize = compressed_tex_size(width, height, depth, internalFormat); 3225 break; 3226 } 3227 3228 /* This should really never fail */ 3229 if (_mesa_base_tex_format(ctx, internalFormat) < 0) { 3230 *reason = "internalFormat"; 3231 return GL_INVALID_ENUM; 3232 } 3233 3234 /* No compressed formats support borders at this time */ 3235 if (border != 0) { 3236 *reason = "border != 0"; 3237 return GL_INVALID_VALUE; 3238 } 3239 3240 /* For cube map, width must equal height */ 3241 if (_mesa_is_cube_face(target) && width != height) { 3242 *reason = "width != height"; 3243 return GL_INVALID_VALUE; 3244 } 3245 3246 /* check image size against compression block size */ 3247 { 3248 gl_format texFormat = 3249 ctx->Driver.ChooseTextureFormat(ctx, proxy_format, 3250 choose_format, choose_type); 3251 GLuint bw, bh; 3252 3253 _mesa_get_format_block_size(texFormat, &bw, &bh); 3254 if ((width > bw && width % bw > 0) || 3255 (height > bh && height % bh > 0)) { 3256 /* 3257 * Per GL_ARB_texture_compression: GL_INVALID_OPERATION is 3258 * generated [...] if any parameter combinations are not 3259 * supported by the specific compressed internal format. 3260 */ 3261 *reason = "invalid width or height for compression format"; 3262 return GL_INVALID_OPERATION; 3263 } 3264 } 3265 3266 /* check image sizes */ 3267 if (!ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level, 3268 proxy_format, choose_format, 3269 choose_type, 3270 width, height, depth, border)) { 3271 /* See error comment above */ 3272 *reason = "invalid width, height or format"; 3273 return GL_INVALID_OPERATION; 3274 } 3275 3276 /* check image size in bytes */ 3277 if (expectedSize != imageSize) { 3278 /* Per GL_ARB_texture_compression: GL_INVALID_VALUE is generated [...] 3279 * if <imageSize> is not consistent with the format, dimensions, and 3280 * contents of the specified image. 3281 */ 3282 *reason = "imageSize inconsistant with width/height/format"; 3283 return GL_INVALID_VALUE; 3284 } 3285 3286 if (!mutable_tex_object(ctx, target)) { 3287 *reason = "immutable texture"; 3288 return GL_INVALID_OPERATION; 3289 } 3290 3291 return GL_NO_ERROR; 3292} 3293 3294 3295/** 3296 * Error checking for glCompressedTexSubImage[123]D(). 3297 * \warning There are some bad assumptions here about the size of compressed 3298 * texture tiles (multiple of 4) used to test the validity of the 3299 * offset and size parameters. 3300 * \return error code or GL_NO_ERROR. 3301 */ 3302static GLenum 3303compressed_subtexture_error_check(struct gl_context *ctx, GLint dimensions, 3304 GLenum target, GLint level, 3305 GLint xoffset, GLint yoffset, GLint zoffset, 3306 GLsizei width, GLsizei height, GLsizei depth, 3307 GLenum format, GLsizei imageSize) 3308{ 3309 GLint expectedSize, maxLevels = 0, maxTextureSize; 3310 GLuint bw, bh; 3311 (void) zoffset; 3312 3313 if (dimensions == 1) { 3314 /* 1D compressed textures not allowed */ 3315 return GL_INVALID_ENUM; 3316 } 3317 else if (dimensions == 2) { 3318 if (target == GL_PROXY_TEXTURE_2D) { 3319 maxLevels = ctx->Const.MaxTextureLevels; 3320 } 3321 else if (target == GL_TEXTURE_2D) { 3322 maxLevels = ctx->Const.MaxTextureLevels; 3323 } 3324 else if (target == GL_PROXY_TEXTURE_CUBE_MAP_ARB) { 3325 if (!ctx->Extensions.ARB_texture_cube_map) 3326 return GL_INVALID_ENUM; /*target*/ 3327 maxLevels = ctx->Const.MaxCubeTextureLevels; 3328 } 3329 else if (_mesa_is_cube_face(target)) { 3330 if (!ctx->Extensions.ARB_texture_cube_map) 3331 return GL_INVALID_ENUM; /*target*/ 3332 maxLevels = ctx->Const.MaxCubeTextureLevels; 3333 } 3334 else { 3335 return GL_INVALID_ENUM; /*target*/ 3336 } 3337 } 3338 else if (dimensions == 3) { 3339 /* 3D compressed textures not allowed */ 3340 return GL_INVALID_ENUM; 3341 } 3342 3343 maxTextureSize = 1 << (maxLevels - 1); 3344 3345 /* this will catch any invalid compressed format token */ 3346 if (!_mesa_is_compressed_format(ctx, format)) 3347 return GL_INVALID_ENUM; 3348 3349 if (width < 1 || width > maxTextureSize) 3350 return GL_INVALID_VALUE; 3351 3352 if ((height < 1 || height > maxTextureSize) 3353 && dimensions > 1) 3354 return GL_INVALID_VALUE; 3355 3356 if (level < 0 || level >= maxLevels) 3357 return GL_INVALID_VALUE; 3358 3359 /* 3360 * do checks which depend on compression block size 3361 */ 3362 get_compressed_block_size(format, &bw, &bh); 3363 3364 if ((xoffset % bw != 0) || (yoffset % bh != 0)) 3365 return GL_INVALID_VALUE; 3366 3367 if ((width % bw != 0) && width != 2 && width != 1) 3368 return GL_INVALID_VALUE; 3369 3370 if ((height % bh != 0) && height != 2 && height != 1) 3371 return GL_INVALID_VALUE; 3372 3373 expectedSize = compressed_tex_size(width, height, depth, format); 3374 if (expectedSize != imageSize) 3375 return GL_INVALID_VALUE; 3376 3377 return GL_NO_ERROR; 3378} 3379 3380 3381/** 3382 * Do second part of glCompressedTexSubImage error checking. 3383 * \return GL_TRUE if error found, GL_FALSE otherwise. 3384 */ 3385static GLboolean 3386compressed_subtexture_error_check2(struct gl_context *ctx, GLuint dims, 3387 GLsizei width, GLsizei height, 3388 GLsizei depth, GLenum format, 3389 struct gl_texture_image *texImage) 3390{ 3391 3392 if ((GLint) format != texImage->InternalFormat) { 3393 _mesa_error(ctx, GL_INVALID_OPERATION, 3394 "glCompressedTexSubImage%uD(format=0x%x)", dims, format); 3395 return GL_TRUE; 3396 } 3397 3398 if (compressedteximage_only_format(ctx, format)) { 3399 _mesa_error(ctx, GL_INVALID_OPERATION, 3400 "glCompressedTexSubImage%uD(format=0x%x cannot be updated)" 3401 , dims, format); 3402 return GL_TRUE; 3403 } 3404 3405 if (((width == 1 || width == 2) && 3406 width != (GLsizei) texImage->Width) || 3407 (width > (GLsizei) texImage->Width)) { 3408 _mesa_error(ctx, GL_INVALID_VALUE, 3409 "glCompressedTexSubImage%uD(width=%d)", dims, width); 3410 return GL_TRUE; 3411 } 3412 3413 if (dims >= 2) { 3414 if (((height == 1 || height == 2) && 3415 height != (GLsizei) texImage->Height) || 3416 (height > (GLsizei) texImage->Height)) { 3417 _mesa_error(ctx, GL_INVALID_VALUE, 3418 "glCompressedTexSubImage%uD(height=%d)", dims, height); 3419 return GL_TRUE; 3420 } 3421 } 3422 3423 if (dims >= 3) { 3424 if (((depth == 1 || depth == 2) && 3425 depth != (GLsizei) texImage->Depth) || 3426 (depth > (GLsizei) texImage->Depth)) { 3427 _mesa_error(ctx, GL_INVALID_VALUE, 3428 "glCompressedTexSubImage%uD(depth=%d)", dims, depth); 3429 return GL_TRUE; 3430 } 3431 } 3432 3433 return GL_FALSE; 3434} 3435 3436 3437/** 3438 * Implementation of the glCompressedTexImage1/2/3D() functions. 3439 */ 3440static void 3441compressedteximage(struct gl_context *ctx, GLuint dims, 3442 GLenum target, GLint level, 3443 GLenum internalFormat, GLsizei width, 3444 GLsizei height, GLsizei depth, GLint border, 3445 GLsizei imageSize, const GLvoid *data) 3446{ 3447 GLenum error; 3448 char *reason = ""; 3449 3450 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); 3451 3452 if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) 3453 _mesa_debug(ctx, 3454 "glCompressedTexImage%uDARB %s %d %s %d %d %d %d %d %p\n", 3455 dims, 3456 _mesa_lookup_enum_by_nr(target), level, 3457 _mesa_lookup_enum_by_nr(internalFormat), 3458 width, height, depth, border, imageSize, data); 3459 3460 /* check target */ 3461 if (!legal_teximage_target(ctx, dims, target)) { 3462 _mesa_error(ctx, GL_INVALID_ENUM, "glCompressedTexImage%uD(target=%s)", 3463 dims, _mesa_lookup_enum_by_nr(target)); 3464 return; 3465 } 3466 3467 error = compressed_texture_error_check(ctx, dims, target, level, 3468 internalFormat, width, height, depth, 3469 border, imageSize, &reason); 3470 3471#if FEATURE_ES 3472 /* XXX this is kind of a hack */ 3473 if (!error && dims == 2) { 3474 switch (internalFormat) { 3475 case GL_PALETTE4_RGB8_OES: 3476 case GL_PALETTE4_RGBA8_OES: 3477 case GL_PALETTE4_R5_G6_B5_OES: 3478 case GL_PALETTE4_RGBA4_OES: 3479 case GL_PALETTE4_RGB5_A1_OES: 3480 case GL_PALETTE8_RGB8_OES: 3481 case GL_PALETTE8_RGBA8_OES: 3482 case GL_PALETTE8_R5_G6_B5_OES: 3483 case GL_PALETTE8_RGBA4_OES: 3484 case GL_PALETTE8_RGB5_A1_OES: 3485 _mesa_cpal_compressed_teximage2d(target, level, internalFormat, 3486 width, height, imageSize, data); 3487 return; 3488 } 3489 } 3490#endif 3491 3492 if (_mesa_is_proxy_texture(target)) { 3493 /* Proxy texture: just check for errors and update proxy state */ 3494 struct gl_texture_image *texImage; 3495 3496 if (!error) { 3497 struct gl_texture_object *texObj = 3498 _mesa_get_current_tex_object(ctx, target); 3499 gl_format texFormat = 3500 _mesa_choose_texture_format(ctx, texObj, target, level, 3501 internalFormat, GL_NONE, GL_NONE); 3502 if (!legal_texture_size(ctx, texFormat, width, height, depth)) { 3503 error = GL_OUT_OF_MEMORY; 3504 } 3505 } 3506 3507 texImage = _mesa_get_proxy_tex_image(ctx, target, level); 3508 if (texImage) { 3509 if (error) { 3510 /* if error, clear all proxy texture image parameters */ 3511 clear_teximage_fields(texImage); 3512 } 3513 else { 3514 /* no error: store the teximage parameters */ 3515 _mesa_init_teximage_fields(ctx, texImage, width, height, 3516 depth, border, internalFormat, 3517 MESA_FORMAT_NONE); 3518 } 3519 } 3520 } 3521 else { 3522 /* non-proxy target */ 3523 struct gl_texture_object *texObj; 3524 struct gl_texture_image *texImage; 3525 3526 if (error) { 3527 _mesa_error(ctx, error, "glCompressedTexImage%uD(%s)", dims, reason); 3528 return; 3529 } 3530 3531 texObj = _mesa_get_current_tex_object(ctx, target); 3532 3533 _mesa_lock_texture(ctx, texObj); 3534 { 3535 texImage = _mesa_get_tex_image(ctx, texObj, target, level); 3536 if (!texImage) { 3537 _mesa_error(ctx, GL_OUT_OF_MEMORY, 3538 "glCompressedTexImage%uD", dims); 3539 } 3540 else { 3541 gl_format texFormat; 3542 3543 ctx->Driver.FreeTextureImageBuffer(ctx, texImage); 3544 3545 texFormat = _mesa_choose_texture_format(ctx, texObj, target, level, 3546 internalFormat, GL_NONE, 3547 GL_NONE); 3548 3549 if (legal_texture_size(ctx, texFormat, width, height, depth)) { 3550 _mesa_init_teximage_fields(ctx, texImage, 3551 width, height, depth, 3552 border, internalFormat, texFormat); 3553 3554 ctx->Driver.CompressedTexImage(ctx, dims, texImage, imageSize, 3555 data); 3556 3557 check_gen_mipmap(ctx, target, texObj, level); 3558 3559 _mesa_dirty_texobj(ctx, texObj, GL_TRUE); 3560 } 3561 else { 3562 _mesa_error(ctx, GL_OUT_OF_MEMORY, 3563 "glCompressedTexImage%uD", dims); 3564 } 3565 } 3566 } 3567 _mesa_unlock_texture(ctx, texObj); 3568 } 3569} 3570 3571 3572void GLAPIENTRY 3573_mesa_CompressedTexImage1DARB(GLenum target, GLint level, 3574 GLenum internalFormat, GLsizei width, 3575 GLint border, GLsizei imageSize, 3576 const GLvoid *data) 3577{ 3578 GET_CURRENT_CONTEXT(ctx); 3579 compressedteximage(ctx, 1, target, level, internalFormat, 3580 width, 1, 1, border, imageSize, data); 3581} 3582 3583 3584void GLAPIENTRY 3585_mesa_CompressedTexImage2DARB(GLenum target, GLint level, 3586 GLenum internalFormat, GLsizei width, 3587 GLsizei height, GLint border, GLsizei imageSize, 3588 const GLvoid *data) 3589{ 3590 GET_CURRENT_CONTEXT(ctx); 3591 compressedteximage(ctx, 2, target, level, internalFormat, 3592 width, height, 1, border, imageSize, data); 3593} 3594 3595 3596void GLAPIENTRY 3597_mesa_CompressedTexImage3DARB(GLenum target, GLint level, 3598 GLenum internalFormat, GLsizei width, 3599 GLsizei height, GLsizei depth, GLint border, 3600 GLsizei imageSize, const GLvoid *data) 3601{ 3602 GET_CURRENT_CONTEXT(ctx); 3603 compressedteximage(ctx, 3, target, level, internalFormat, 3604 width, height, depth, border, imageSize, data); 3605} 3606 3607 3608/** 3609 * Common helper for glCompressedTexSubImage1/2/3D(). 3610 */ 3611static void 3612compressed_tex_sub_image(GLuint dims, GLenum target, GLint level, 3613 GLint xoffset, GLint yoffset, GLint zoffset, 3614 GLsizei width, GLsizei height, GLsizei depth, 3615 GLenum format, GLsizei imageSize, const GLvoid *data) 3616{ 3617 struct gl_texture_object *texObj; 3618 struct gl_texture_image *texImage; 3619 GLenum error; 3620 GET_CURRENT_CONTEXT(ctx); 3621 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); 3622 3623 error = compressed_subtexture_error_check(ctx, dims, target, level, 3624 xoffset, 0, 0, /* pos */ 3625 width, height, depth, /* size */ 3626 format, imageSize); 3627 if (error) { 3628 _mesa_error(ctx, error, "glCompressedTexSubImage%uD", dims); 3629 return; 3630 } 3631 3632 texObj = _mesa_get_current_tex_object(ctx, target); 3633 3634 _mesa_lock_texture(ctx, texObj); 3635 { 3636 texImage = _mesa_select_tex_image(ctx, texObj, target, level); 3637 assert(texImage); 3638 3639 if (compressed_subtexture_error_check2(ctx, dims, width, height, depth, 3640 format, texImage)) { 3641 /* error was recorded */ 3642 } 3643 else if (width > 0 && height > 0 && depth > 0) { 3644 ctx->Driver.CompressedTexSubImage(ctx, dims, texImage, 3645 xoffset, yoffset, zoffset, 3646 width, height, depth, 3647 format, imageSize, data); 3648 3649 check_gen_mipmap(ctx, target, texObj, level); 3650 3651 ctx->NewState |= _NEW_TEXTURE; 3652 } 3653 } 3654 _mesa_unlock_texture(ctx, texObj); 3655} 3656 3657 3658void GLAPIENTRY 3659_mesa_CompressedTexSubImage1DARB(GLenum target, GLint level, GLint xoffset, 3660 GLsizei width, GLenum format, 3661 GLsizei imageSize, const GLvoid *data) 3662{ 3663 compressed_tex_sub_image(1, target, level, xoffset, 0, 0, width, 1, 1, 3664 format, imageSize, data); 3665} 3666 3667 3668void GLAPIENTRY 3669_mesa_CompressedTexSubImage2DARB(GLenum target, GLint level, GLint xoffset, 3670 GLint yoffset, GLsizei width, GLsizei height, 3671 GLenum format, GLsizei imageSize, 3672 const GLvoid *data) 3673{ 3674 compressed_tex_sub_image(2, target, level, xoffset, yoffset, 0, 3675 width, height, 1, format, imageSize, data); 3676} 3677 3678 3679void GLAPIENTRY 3680_mesa_CompressedTexSubImage3DARB(GLenum target, GLint level, GLint xoffset, 3681 GLint yoffset, GLint zoffset, GLsizei width, 3682 GLsizei height, GLsizei depth, GLenum format, 3683 GLsizei imageSize, const GLvoid *data) 3684{ 3685 compressed_tex_sub_image(3, target, level, xoffset, yoffset, zoffset, 3686 width, height, depth, format, imageSize, data); 3687} 3688 3689static gl_format 3690get_texbuffer_format(const struct gl_context *ctx, GLenum internalFormat) 3691{ 3692 switch (internalFormat) { 3693 case GL_ALPHA8: 3694 return MESA_FORMAT_A8; 3695 case GL_ALPHA16: 3696 return MESA_FORMAT_A16; 3697 case GL_ALPHA16F_ARB: 3698 return MESA_FORMAT_ALPHA_FLOAT16; 3699 case GL_ALPHA32F_ARB: 3700 return MESA_FORMAT_ALPHA_FLOAT32; 3701 case GL_ALPHA8I_EXT: 3702 return MESA_FORMAT_ALPHA_INT8; 3703 case GL_ALPHA16I_EXT: 3704 return MESA_FORMAT_ALPHA_INT16; 3705 case GL_ALPHA32I_EXT: 3706 return MESA_FORMAT_ALPHA_INT32; 3707 case GL_ALPHA8UI_EXT: 3708 return MESA_FORMAT_ALPHA_UINT8; 3709 case GL_ALPHA16UI_EXT: 3710 return MESA_FORMAT_ALPHA_UINT16; 3711 case GL_ALPHA32UI_EXT: 3712 return MESA_FORMAT_ALPHA_UINT32; 3713 case GL_LUMINANCE8: 3714 return MESA_FORMAT_L8; 3715 case GL_LUMINANCE16: 3716 return MESA_FORMAT_L16; 3717 case GL_LUMINANCE16F_ARB: 3718 return MESA_FORMAT_LUMINANCE_FLOAT16; 3719 case GL_LUMINANCE32F_ARB: 3720 return MESA_FORMAT_LUMINANCE_FLOAT32; 3721 case GL_LUMINANCE8I_EXT: 3722 return MESA_FORMAT_LUMINANCE_INT8; 3723 case GL_LUMINANCE16I_EXT: 3724 return MESA_FORMAT_LUMINANCE_INT16; 3725 case GL_LUMINANCE32I_EXT: 3726 return MESA_FORMAT_LUMINANCE_INT32; 3727 case GL_LUMINANCE8UI_EXT: 3728 return MESA_FORMAT_LUMINANCE_UINT8; 3729 case GL_LUMINANCE16UI_EXT: 3730 return MESA_FORMAT_LUMINANCE_UINT16; 3731 case GL_LUMINANCE32UI_EXT: 3732 return MESA_FORMAT_LUMINANCE_UINT32; 3733 case GL_LUMINANCE8_ALPHA8: 3734 return MESA_FORMAT_AL88; 3735 case GL_LUMINANCE16_ALPHA16: 3736 return MESA_FORMAT_AL1616; 3737 case GL_LUMINANCE_ALPHA16F_ARB: 3738 return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16; 3739 case GL_LUMINANCE_ALPHA32F_ARB: 3740 return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32; 3741 case GL_LUMINANCE_ALPHA8I_EXT: 3742 return MESA_FORMAT_LUMINANCE_ALPHA_INT8; 3743 case GL_LUMINANCE_ALPHA16I_EXT: 3744 return MESA_FORMAT_LUMINANCE_ALPHA_INT8; 3745 case GL_LUMINANCE_ALPHA32I_EXT: 3746 return MESA_FORMAT_LUMINANCE_ALPHA_INT16; 3747 case GL_LUMINANCE_ALPHA8UI_EXT: 3748 return MESA_FORMAT_LUMINANCE_ALPHA_UINT8; 3749 case GL_LUMINANCE_ALPHA16UI_EXT: 3750 return MESA_FORMAT_LUMINANCE_ALPHA_UINT16; 3751 case GL_LUMINANCE_ALPHA32UI_EXT: 3752 return MESA_FORMAT_LUMINANCE_ALPHA_UINT32; 3753 case GL_INTENSITY8: 3754 return MESA_FORMAT_I8; 3755 case GL_INTENSITY16: 3756 return MESA_FORMAT_I16; 3757 case GL_INTENSITY16F_ARB: 3758 return MESA_FORMAT_INTENSITY_FLOAT16; 3759 case GL_INTENSITY32F_ARB: 3760 return MESA_FORMAT_INTENSITY_FLOAT32; 3761 case GL_INTENSITY8I_EXT: 3762 return MESA_FORMAT_INTENSITY_INT8; 3763 case GL_INTENSITY16I_EXT: 3764 return MESA_FORMAT_INTENSITY_INT16; 3765 case GL_INTENSITY32I_EXT: 3766 return MESA_FORMAT_INTENSITY_INT32; 3767 case GL_INTENSITY8UI_EXT: 3768 return MESA_FORMAT_INTENSITY_UINT8; 3769 case GL_INTENSITY16UI_EXT: 3770 return MESA_FORMAT_INTENSITY_UINT16; 3771 case GL_INTENSITY32UI_EXT: 3772 return MESA_FORMAT_INTENSITY_UINT32; 3773 case GL_RGBA8: 3774 return MESA_FORMAT_RGBA8888_REV; 3775 case GL_RGBA16: 3776 return MESA_FORMAT_RGBA_16; 3777 case GL_RGBA16F_ARB: 3778 return MESA_FORMAT_RGBA_FLOAT16; 3779 case GL_RGBA32F_ARB: 3780 return MESA_FORMAT_RGBA_FLOAT32; 3781 case GL_RGBA8I_EXT: 3782 return MESA_FORMAT_RGBA_INT8; 3783 case GL_RGBA16I_EXT: 3784 return MESA_FORMAT_RGBA_INT16; 3785 case GL_RGBA32I_EXT: 3786 return MESA_FORMAT_RGBA_INT32; 3787 case GL_RGBA8UI_EXT: 3788 return MESA_FORMAT_RGBA_UINT8; 3789 case GL_RGBA16UI_EXT: 3790 return MESA_FORMAT_RGBA_UINT16; 3791 case GL_RGBA32UI_EXT: 3792 return MESA_FORMAT_RGBA_UINT32; 3793 3794 case GL_RG8: 3795 return MESA_FORMAT_GR88; 3796 case GL_RG16: 3797 return MESA_FORMAT_RG1616; 3798 case GL_RG16F: 3799 return MESA_FORMAT_RG_FLOAT16; 3800 case GL_RG32F: 3801 return MESA_FORMAT_RG_FLOAT32; 3802 case GL_RG8I: 3803 return MESA_FORMAT_RG_INT8; 3804 case GL_RG16I: 3805 return MESA_FORMAT_RG_INT16; 3806 case GL_RG32I: 3807 return MESA_FORMAT_RG_INT32; 3808 case GL_RG8UI: 3809 return MESA_FORMAT_RG_UINT8; 3810 case GL_RG16UI: 3811 return MESA_FORMAT_RG_UINT16; 3812 case GL_RG32UI: 3813 return MESA_FORMAT_RG_UINT32; 3814 3815 case GL_R8: 3816 return MESA_FORMAT_R8; 3817 case GL_R16: 3818 return MESA_FORMAT_R16; 3819 case GL_R16F: 3820 return MESA_FORMAT_R_FLOAT16; 3821 case GL_R32F: 3822 return MESA_FORMAT_R_FLOAT32; 3823 case GL_R8I: 3824 return MESA_FORMAT_R_INT8; 3825 case GL_R16I: 3826 return MESA_FORMAT_R_INT16; 3827 case GL_R32I: 3828 return MESA_FORMAT_R_INT32; 3829 case GL_R8UI: 3830 return MESA_FORMAT_R_UINT8; 3831 case GL_R16UI: 3832 return MESA_FORMAT_R_UINT16; 3833 case GL_R32UI: 3834 return MESA_FORMAT_R_UINT32; 3835 3836 default: 3837 return MESA_FORMAT_NONE; 3838 } 3839} 3840 3841static gl_format 3842validate_texbuffer_format(const struct gl_context *ctx, GLenum internalFormat) 3843{ 3844 gl_format format = get_texbuffer_format(ctx, internalFormat); 3845 GLenum datatype; 3846 3847 if (format == MESA_FORMAT_NONE) 3848 return MESA_FORMAT_NONE; 3849 3850 datatype = _mesa_get_format_datatype(format); 3851 if (datatype == GL_FLOAT && !ctx->Extensions.ARB_texture_float) 3852 return MESA_FORMAT_NONE; 3853 3854 if (datatype == GL_HALF_FLOAT && !ctx->Extensions.ARB_half_float_pixel) 3855 return MESA_FORMAT_NONE; 3856 3857 /* The GL_ARB_texture_rg and GL_ARB_texture_buffer_object specs don't make 3858 * any mention of R/RG formats, but they appear in the GL 3.1 core 3859 * specification. 3860 */ 3861 if (ctx->Version <= 30) { 3862 GLenum base_format = _mesa_get_format_base_format(format); 3863 3864 if (base_format == GL_R || base_format == GL_RG) 3865 return MESA_FORMAT_NONE; 3866 } 3867 return format; 3868} 3869 3870 3871/** GL_ARB_texture_buffer_object */ 3872void GLAPIENTRY 3873_mesa_TexBuffer(GLenum target, GLenum internalFormat, GLuint buffer) 3874{ 3875 struct gl_texture_object *texObj; 3876 struct gl_buffer_object *bufObj; 3877 gl_format format; 3878 3879 GET_CURRENT_CONTEXT(ctx); 3880 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); 3881 3882 if (!ctx->Extensions.ARB_texture_buffer_object) { 3883 _mesa_error(ctx, GL_INVALID_OPERATION, "glTexBuffer"); 3884 return; 3885 } 3886 3887 if (target != GL_TEXTURE_BUFFER_ARB) { 3888 _mesa_error(ctx, GL_INVALID_ENUM, "glTexBuffer(target)"); 3889 return; 3890 } 3891 3892 format = validate_texbuffer_format(ctx, internalFormat); 3893 if (format == MESA_FORMAT_NONE) { 3894 _mesa_error(ctx, GL_INVALID_ENUM, "glTexBuffer(internalFormat 0x%x)", 3895 internalFormat); 3896 return; 3897 } 3898 3899 bufObj = _mesa_lookup_bufferobj(ctx, buffer); 3900 if (buffer && !bufObj) { 3901 _mesa_error(ctx, GL_INVALID_OPERATION, "glTexBuffer(buffer %u)", buffer); 3902 return; 3903 } 3904 3905 texObj = _mesa_get_current_tex_object(ctx, target); 3906 3907 _mesa_lock_texture(ctx, texObj); 3908 { 3909 _mesa_reference_buffer_object(ctx, &texObj->BufferObject, bufObj); 3910 texObj->BufferObjectFormat = internalFormat; 3911 texObj->_BufferObjectFormat = format; 3912 } 3913 _mesa_unlock_texture(ctx, texObj); 3914} 3915