st_cb_texture.c revision 56b57aa360a8bad0c4b68fbdf7c64ac33f9e7661
1/************************************************************************** 2 * 3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28#include "main/mfeatures.h" 29#include "main/bufferobj.h" 30#include "main/enums.h" 31#include "main/fbobject.h" 32#include "main/formats.h" 33#include "main/image.h" 34#include "main/imports.h" 35#include "main/macros.h" 36#include "main/mipmap.h" 37#include "main/pack.h" 38#include "main/pbo.h" 39#include "main/pixeltransfer.h" 40#include "main/texcompress.h" 41#include "main/texgetimage.h" 42#include "main/teximage.h" 43#include "main/texobj.h" 44#include "main/texstore.h" 45 46#include "state_tracker/st_debug.h" 47#include "state_tracker/st_context.h" 48#include "state_tracker/st_cb_fbo.h" 49#include "state_tracker/st_cb_flush.h" 50#include "state_tracker/st_cb_texture.h" 51#include "state_tracker/st_format.h" 52#include "state_tracker/st_texture.h" 53#include "state_tracker/st_gen_mipmap.h" 54#include "state_tracker/st_atom.h" 55 56#include "pipe/p_context.h" 57#include "pipe/p_defines.h" 58#include "util/u_inlines.h" 59#include "pipe/p_shader_tokens.h" 60#include "util/u_tile.h" 61#include "util/u_blit.h" 62#include "util/u_format.h" 63#include "util/u_surface.h" 64#include "util/u_sampler.h" 65#include "util/u_math.h" 66#include "util/u_box.h" 67 68#define DBG if (0) printf 69 70 71static enum pipe_texture_target 72gl_target_to_pipe(GLenum target) 73{ 74 switch (target) { 75 case GL_TEXTURE_1D: 76 return PIPE_TEXTURE_1D; 77 case GL_TEXTURE_2D: 78 case GL_TEXTURE_EXTERNAL_OES: 79 return PIPE_TEXTURE_2D; 80 case GL_TEXTURE_RECTANGLE_NV: 81 return PIPE_TEXTURE_RECT; 82 case GL_TEXTURE_3D: 83 return PIPE_TEXTURE_3D; 84 case GL_TEXTURE_CUBE_MAP_ARB: 85 return PIPE_TEXTURE_CUBE; 86 case GL_TEXTURE_1D_ARRAY_EXT: 87 return PIPE_TEXTURE_1D_ARRAY; 88 case GL_TEXTURE_2D_ARRAY_EXT: 89 return PIPE_TEXTURE_2D_ARRAY; 90 case GL_TEXTURE_BUFFER: 91 return PIPE_BUFFER; 92 default: 93 assert(0); 94 return 0; 95 } 96} 97 98 99/** called via ctx->Driver.NewTextureImage() */ 100static struct gl_texture_image * 101st_NewTextureImage(struct gl_context * ctx) 102{ 103 DBG("%s\n", __FUNCTION__); 104 (void) ctx; 105 return (struct gl_texture_image *) ST_CALLOC_STRUCT(st_texture_image); 106} 107 108 109/** called via ctx->Driver.DeleteTextureImage() */ 110static void 111st_DeleteTextureImage(struct gl_context * ctx, struct gl_texture_image *img) 112{ 113 /* nothing special (yet) for st_texture_image */ 114 _mesa_delete_texture_image(ctx, img); 115} 116 117 118/** called via ctx->Driver.NewTextureObject() */ 119static struct gl_texture_object * 120st_NewTextureObject(struct gl_context * ctx, GLuint name, GLenum target) 121{ 122 struct st_texture_object *obj = ST_CALLOC_STRUCT(st_texture_object); 123 124 DBG("%s\n", __FUNCTION__); 125 _mesa_initialize_texture_object(&obj->base, name, target); 126 127 return &obj->base; 128} 129 130/** called via ctx->Driver.DeleteTextureObject() */ 131static void 132st_DeleteTextureObject(struct gl_context *ctx, 133 struct gl_texture_object *texObj) 134{ 135 struct st_context *st = st_context(ctx); 136 struct st_texture_object *stObj = st_texture_object(texObj); 137 if (stObj->pt) 138 pipe_resource_reference(&stObj->pt, NULL); 139 if (stObj->sampler_view) { 140 if (stObj->sampler_view->context != st->pipe) { 141 /* Take "ownership" of this texture sampler view by setting 142 * its context pointer to this context. This avoids potential 143 * crashes when the texture object is shared among contexts 144 * and the original/owner context has already been destroyed. 145 */ 146 stObj->sampler_view->context = st->pipe; 147 } 148 pipe_sampler_view_reference(&stObj->sampler_view, NULL); 149 } 150 _mesa_delete_texture_object(ctx, texObj); 151} 152 153 154/** called via ctx->Driver.FreeTextureImageBuffer() */ 155static void 156st_FreeTextureImageBuffer(struct gl_context *ctx, 157 struct gl_texture_image *texImage) 158{ 159 struct st_texture_image *stImage = st_texture_image(texImage); 160 161 DBG("%s\n", __FUNCTION__); 162 163 if (stImage->pt) { 164 pipe_resource_reference(&stImage->pt, NULL); 165 } 166 167 if (stImage->TexData) { 168 _mesa_align_free(stImage->TexData); 169 stImage->TexData = NULL; 170 } 171} 172 173 174/** called via ctx->Driver.MapTextureImage() */ 175static void 176st_MapTextureImage(struct gl_context *ctx, 177 struct gl_texture_image *texImage, 178 GLuint slice, GLuint x, GLuint y, GLuint w, GLuint h, 179 GLbitfield mode, 180 GLubyte **mapOut, GLint *rowStrideOut) 181{ 182 struct st_context *st = st_context(ctx); 183 struct st_texture_image *stImage = st_texture_image(texImage); 184 unsigned pipeMode; 185 GLubyte *map; 186 187 pipeMode = 0x0; 188 if (mode & GL_MAP_READ_BIT) 189 pipeMode |= PIPE_TRANSFER_READ; 190 if (mode & GL_MAP_WRITE_BIT) 191 pipeMode |= PIPE_TRANSFER_WRITE; 192 193 map = st_texture_image_map(st, stImage, slice, pipeMode, x, y, w, h); 194 if (map) { 195 *mapOut = map; 196 *rowStrideOut = stImage->transfer->stride; 197 } 198 else { 199 *mapOut = NULL; 200 *rowStrideOut = 0; 201 } 202} 203 204 205/** called via ctx->Driver.UnmapTextureImage() */ 206static void 207st_UnmapTextureImage(struct gl_context *ctx, 208 struct gl_texture_image *texImage, 209 GLuint slice) 210{ 211 struct st_context *st = st_context(ctx); 212 struct st_texture_image *stImage = st_texture_image(texImage); 213 st_texture_image_unmap(st, stImage); 214} 215 216 217/** 218 * Return default texture resource binding bitmask for the given format. 219 */ 220static GLuint 221default_bindings(struct st_context *st, enum pipe_format format) 222{ 223 struct pipe_screen *screen = st->pipe->screen; 224 const unsigned target = PIPE_TEXTURE_2D; 225 unsigned bindings; 226 227 if (util_format_is_depth_or_stencil(format)) 228 bindings = PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_DEPTH_STENCIL; 229 else 230 bindings = PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET; 231 232 if (screen->is_format_supported(screen, format, target, 0, bindings)) 233 return bindings; 234 else { 235 /* Try non-sRGB. */ 236 format = util_format_linear(format); 237 238 if (screen->is_format_supported(screen, format, target, 0, bindings)) 239 return bindings; 240 else 241 return PIPE_BIND_SAMPLER_VIEW; 242 } 243} 244 245 246/** Return number of image dimensions (1, 2 or 3) for a texture target. */ 247static GLuint 248get_texture_dims(GLenum target) 249{ 250 switch (target) { 251 case GL_TEXTURE_1D: 252 case GL_TEXTURE_1D_ARRAY_EXT: 253 case GL_TEXTURE_BUFFER: 254 return 1; 255 case GL_TEXTURE_2D: 256 case GL_TEXTURE_CUBE_MAP_ARB: 257 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: 258 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: 259 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: 260 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: 261 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: 262 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: 263 case GL_TEXTURE_RECTANGLE_NV: 264 case GL_TEXTURE_2D_ARRAY_EXT: 265 case GL_TEXTURE_EXTERNAL_OES: 266 return 2; 267 case GL_TEXTURE_3D: 268 return 3; 269 default: 270 assert(0 && "invalid texture target in get_texture_dims()"); 271 return 1; 272 } 273} 274 275 276/** 277 * Given the size of a mipmap image, try to compute the size of the level=0 278 * mipmap image. 279 * 280 * Note that this isn't always accurate for odd-sized, non-POW textures. 281 * For example, if level=1 and width=40 then the level=0 width may be 80 or 81. 282 * 283 * \return GL_TRUE for success, GL_FALSE for failure 284 */ 285static GLboolean 286guess_base_level_size(GLenum target, 287 GLuint width, GLuint height, GLuint depth, GLuint level, 288 GLuint *width0, GLuint *height0, GLuint *depth0) 289{ 290 const GLuint dims = get_texture_dims(target); 291 292 assert(width >= 1); 293 assert(height >= 1); 294 assert(depth >= 1); 295 296 if (level > 0) { 297 /* Depending on the image's size, we can't always make a guess here */ 298 if ((dims >= 1 && width == 1) || 299 (dims >= 2 && height == 1) || 300 (dims >= 3 && depth == 1)) { 301 /* we can't determine the image size at level=0 */ 302 return GL_FALSE; 303 } 304 305 /* grow the image size until we hit level = 0 */ 306 while (level > 0) { 307 if (width > 1) 308 width <<= 1; 309 if (height > 1) 310 height <<= 1; 311 if (depth > 1) 312 depth <<= 1; 313 level--; 314 } 315 } 316 317 *width0 = width; 318 *height0 = height; 319 *depth0 = depth; 320 321 return GL_TRUE; 322} 323 324 325/** 326 * Try to allocate a pipe_resource object for the given st_texture_object. 327 * 328 * We use the given st_texture_image as a clue to determine the size of the 329 * mipmap image at level=0. 330 * 331 * \return GL_TRUE for success, GL_FALSE if out of memory. 332 */ 333static GLboolean 334guess_and_alloc_texture(struct st_context *st, 335 struct st_texture_object *stObj, 336 const struct st_texture_image *stImage) 337{ 338 GLuint lastLevel, width, height, depth; 339 GLuint bindings; 340 GLuint ptWidth, ptHeight, ptDepth, ptLayers; 341 enum pipe_format fmt; 342 343 DBG("%s\n", __FUNCTION__); 344 345 assert(!stObj->pt); 346 347 if (!guess_base_level_size(stObj->base.Target, 348 stImage->base.Width2, 349 stImage->base.Height2, 350 stImage->base.Depth2, 351 stImage->base.Level, 352 &width, &height, &depth)) { 353 /* we can't determine the image size at level=0 */ 354 stObj->width0 = stObj->height0 = stObj->depth0 = 0; 355 /* this is not an out of memory error */ 356 return GL_TRUE; 357 } 358 359 /* At this point, (width x height x depth) is the expected size of 360 * the level=0 mipmap image. 361 */ 362 363 /* Guess a reasonable value for lastLevel. With OpenGL we have no 364 * idea how many mipmap levels will be in a texture until we start 365 * to render with it. Make an educated guess here but be prepared 366 * to re-allocating a texture buffer with space for more (or fewer) 367 * mipmap levels later. 368 */ 369 if ((stObj->base.Sampler.MinFilter == GL_NEAREST || 370 stObj->base.Sampler.MinFilter == GL_LINEAR || 371 stImage->base._BaseFormat == GL_DEPTH_COMPONENT || 372 stImage->base._BaseFormat == GL_DEPTH_STENCIL_EXT) && 373 !stObj->base.GenerateMipmap && 374 stImage->base.Level == 0) { 375 /* only alloc space for a single mipmap level */ 376 lastLevel = 0; 377 } 378 else { 379 /* alloc space for a full mipmap */ 380 GLuint l2width = util_logbase2(width); 381 GLuint l2height = util_logbase2(height); 382 GLuint l2depth = util_logbase2(depth); 383 lastLevel = MAX2(MAX2(l2width, l2height), l2depth); 384 } 385 386 /* Save the level=0 dimensions */ 387 stObj->width0 = width; 388 stObj->height0 = height; 389 stObj->depth0 = depth; 390 391 fmt = st_mesa_format_to_pipe_format(stImage->base.TexFormat); 392 393 bindings = default_bindings(st, fmt); 394 395 st_gl_texture_dims_to_pipe_dims(stObj->base.Target, 396 width, height, depth, 397 &ptWidth, &ptHeight, &ptDepth, &ptLayers); 398 399 stObj->pt = st_texture_create(st, 400 gl_target_to_pipe(stObj->base.Target), 401 fmt, 402 lastLevel, 403 ptWidth, 404 ptHeight, 405 ptDepth, 406 ptLayers, 407 bindings); 408 409 DBG("%s returning %d\n", __FUNCTION__, (stObj->pt != NULL)); 410 411 return stObj->pt != NULL; 412} 413 414 415/** 416 * Called via ctx->Driver.AllocTextureImageBuffer(). 417 * If the texture object/buffer already has space for the indicated image, 418 * we're done. Otherwise, allocate memory for the new texture image. 419 */ 420static GLboolean 421st_AllocTextureImageBuffer(struct gl_context *ctx, 422 struct gl_texture_image *texImage, 423 gl_format format, GLsizei width, 424 GLsizei height, GLsizei depth) 425{ 426 struct st_context *st = st_context(ctx); 427 struct st_texture_image *stImage = st_texture_image(texImage); 428 struct st_texture_object *stObj = st_texture_object(texImage->TexObject); 429 const GLuint level = texImage->Level; 430 431 DBG("%s\n", __FUNCTION__); 432 433 assert(width > 0); 434 assert(height > 0); 435 assert(depth > 0); 436 assert(!stImage->TexData); 437 assert(!stImage->pt); /* xxx this might be wrong */ 438 439 /* Look if the parent texture object has space for this image */ 440 if (stObj->pt && 441 level <= stObj->pt->last_level && 442 st_texture_match_image(stObj->pt, texImage)) { 443 /* this image will fit in the existing texture object's memory */ 444 pipe_resource_reference(&stImage->pt, stObj->pt); 445 return GL_TRUE; 446 } 447 448 /* The parent texture object does not have space for this image */ 449 450 pipe_resource_reference(&stObj->pt, NULL); 451 pipe_sampler_view_reference(&stObj->sampler_view, NULL); 452 453 if (!guess_and_alloc_texture(st, stObj, stImage)) { 454 /* Probably out of memory. 455 * Try flushing any pending rendering, then retry. 456 */ 457 st_finish(st); 458 if (!guess_and_alloc_texture(st, stObj, stImage)) { 459 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage"); 460 return GL_FALSE; 461 } 462 } 463 464 if (stObj->pt && 465 st_texture_match_image(stObj->pt, texImage)) { 466 /* The image will live in the object's mipmap memory */ 467 pipe_resource_reference(&stImage->pt, stObj->pt); 468 assert(stImage->pt); 469 return GL_TRUE; 470 } 471 else { 472 /* Create a new, temporary texture/resource/buffer to hold this 473 * one texture image. Note that when we later access this image 474 * (either for mapping or copying) we'll want to always specify 475 * mipmap level=0, even if the image represents some other mipmap 476 * level. 477 */ 478 enum pipe_format format = 479 st_mesa_format_to_pipe_format(texImage->TexFormat); 480 GLuint bindings = default_bindings(st, format); 481 GLuint ptWidth, ptHeight, ptDepth, ptLayers; 482 483 st_gl_texture_dims_to_pipe_dims(stObj->base.Target, 484 width, height, depth, 485 &ptWidth, &ptHeight, &ptDepth, &ptLayers); 486 487 stImage->pt = st_texture_create(st, 488 gl_target_to_pipe(stObj->base.Target), 489 format, 490 0, /* lastLevel */ 491 ptWidth, 492 ptHeight, 493 ptDepth, 494 ptLayers, 495 bindings); 496 return stImage->pt != NULL; 497 } 498} 499 500 501/** 502 * Preparation prior to glTexImage. Basically check the 'surface_based' 503 * field and switch to a "normal" tex image if necessary. 504 */ 505static void 506prep_teximage(struct gl_context *ctx, struct gl_texture_image *texImage, 507 GLint internalFormat, 508 GLint width, GLint height, GLint depth, GLint border, 509 GLenum format, GLenum type) 510{ 511 struct gl_texture_object *texObj = texImage->TexObject; 512 struct st_texture_object *stObj = st_texture_object(texObj); 513 514 /* switch to "normal" */ 515 if (stObj->surface_based) { 516 const GLenum target = texObj->Target; 517 const GLuint level = texImage->Level; 518 gl_format texFormat; 519 520 _mesa_clear_texture_object(ctx, texObj); 521 pipe_resource_reference(&stObj->pt, NULL); 522 523 /* oops, need to init this image again */ 524 texFormat = _mesa_choose_texture_format(ctx, texObj, target, level, 525 internalFormat, format, type); 526 527 _mesa_init_teximage_fields(ctx, texImage, 528 width, height, depth, border, 529 internalFormat, texFormat); 530 531 stObj->surface_based = GL_FALSE; 532 } 533} 534 535 536static void 537st_TexImage3D(struct gl_context * ctx, 538 struct gl_texture_image *texImage, 539 GLint internalFormat, 540 GLint width, GLint height, GLint depth, 541 GLint border, 542 GLenum format, GLenum type, const void *pixels, 543 const struct gl_pixelstore_attrib *unpack) 544{ 545 prep_teximage(ctx, texImage, internalFormat, width, height, depth, border, 546 format, type); 547 _mesa_store_teximage3d(ctx, texImage, internalFormat, width, height, depth, 548 border, format, type, pixels, unpack); 549} 550 551 552static void 553st_TexImage2D(struct gl_context * ctx, 554 struct gl_texture_image *texImage, 555 GLint internalFormat, 556 GLint width, GLint height, GLint border, 557 GLenum format, GLenum type, const void *pixels, 558 const struct gl_pixelstore_attrib *unpack) 559{ 560 prep_teximage(ctx, texImage, internalFormat, width, height, 1, border, 561 format, type); 562 _mesa_store_teximage2d(ctx, texImage, internalFormat, width, height, 563 border, format, type, pixels, unpack); 564} 565 566 567static void 568st_TexImage1D(struct gl_context * ctx, 569 struct gl_texture_image *texImage, 570 GLint internalFormat, 571 GLint width, GLint border, 572 GLenum format, GLenum type, const void *pixels, 573 const struct gl_pixelstore_attrib *unpack) 574{ 575 prep_teximage(ctx, texImage, internalFormat, width, 1, 1, border, 576 format, type); 577 _mesa_store_teximage1d(ctx, texImage, internalFormat, width, 578 border, format, type, pixels, unpack); 579} 580 581 582static void 583st_CompressedTexImage2D(struct gl_context *ctx, 584 struct gl_texture_image *texImage, 585 GLint internalFormat, 586 GLint width, GLint height, GLint border, 587 GLsizei imageSize, const GLvoid *data) 588{ 589 prep_teximage(ctx, texImage, internalFormat, width, 1, 1, border, 590 GL_NONE, GL_NONE); 591 _mesa_store_compressed_teximage2d(ctx, texImage, internalFormat, width, 592 height, border, imageSize, data); 593} 594 595 596 597/** 598 * glGetTexImage() helper: decompress a compressed texture by rendering 599 * a textured quad. Store the results in the user's buffer. 600 */ 601static void 602decompress_with_blit(struct gl_context * ctx, 603 GLenum format, GLenum type, GLvoid *pixels, 604 struct gl_texture_image *texImage) 605{ 606 struct st_context *st = st_context(ctx); 607 struct pipe_context *pipe = st->pipe; 608 struct st_texture_image *stImage = st_texture_image(texImage); 609 struct st_texture_object *stObj = st_texture_object(texImage->TexObject); 610 struct pipe_sampler_view *src_view = 611 st_get_texture_sampler_view(stObj, pipe); 612 const GLuint width = texImage->Width; 613 const GLuint height = texImage->Height; 614 struct pipe_surface *dst_surface; 615 struct pipe_resource *dst_texture; 616 struct pipe_transfer *tex_xfer; 617 unsigned bind = (PIPE_BIND_RENDER_TARGET | /* util_blit may choose to render */ 618 PIPE_BIND_TRANSFER_READ); 619 620 /* create temp / dest surface */ 621 if (!util_create_rgba_surface(pipe, width, height, bind, 622 &dst_texture, &dst_surface)) { 623 _mesa_problem(ctx, "util_create_rgba_surface() failed " 624 "in decompress_with_blit()"); 625 return; 626 } 627 628 /* Disable conditional rendering. */ 629 if (st->render_condition) { 630 pipe->render_condition(pipe, NULL, 0); 631 } 632 633 /* Choose the source mipmap level */ 634 src_view->u.tex.first_level = src_view->u.tex.last_level = texImage->Level; 635 636 /* blit/render/decompress */ 637 util_blit_pixels_tex(st->blit, 638 src_view, /* pipe_resource (src) */ 639 0, 0, /* src x0, y0 */ 640 width, height, /* src x1, y1 */ 641 dst_surface, /* pipe_surface (dst) */ 642 0, 0, /* dst x0, y0 */ 643 width, height, /* dst x1, y1 */ 644 0.0, /* z */ 645 PIPE_TEX_MIPFILTER_NEAREST); 646 647 /* Restore conditional rendering state. */ 648 if (st->render_condition) { 649 pipe->render_condition(pipe, st->render_condition, 650 st->condition_mode); 651 } 652 653 /* map the dst_surface so we can read from it */ 654 tex_xfer = pipe_get_transfer(pipe, 655 dst_texture, 0, 0, 656 PIPE_TRANSFER_READ, 657 0, 0, width, height); 658 659 pixels = _mesa_map_pbo_dest(ctx, &ctx->Pack, pixels); 660 661 /* copy/pack data into user buffer */ 662 if (st_equal_formats(stImage->pt->format, format, type)) { 663 /* memcpy */ 664 const uint bytesPerRow = width * util_format_get_blocksize(stImage->pt->format); 665 ubyte *map = pipe_transfer_map(pipe, tex_xfer); 666 GLuint row; 667 for (row = 0; row < height; row++) { 668 GLvoid *dest = _mesa_image_address2d(&ctx->Pack, pixels, width, 669 height, format, type, row, 0); 670 memcpy(dest, map, bytesPerRow); 671 map += tex_xfer->stride; 672 } 673 pipe_transfer_unmap(pipe, tex_xfer); 674 } 675 else { 676 /* format translation via floats */ 677 GLuint row; 678 enum pipe_format pformat = util_format_linear(dst_texture->format); 679 for (row = 0; row < height; row++) { 680 const GLbitfield transferOps = 0x0; /* bypassed for glGetTexImage() */ 681 GLfloat rgba[4 * MAX_WIDTH]; 682 GLvoid *dest = _mesa_image_address2d(&ctx->Pack, pixels, width, 683 height, format, type, row, 0); 684 685 if (ST_DEBUG & DEBUG_FALLBACK) 686 debug_printf("%s: fallback format translation\n", __FUNCTION__); 687 688 /* get float[4] rgba row from surface */ 689 pipe_get_tile_rgba_format(pipe, tex_xfer, 0, row, width, 1, 690 pformat, rgba); 691 692 _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba, format, 693 type, dest, &ctx->Pack, transferOps); 694 } 695 } 696 697 _mesa_unmap_pbo_dest(ctx, &ctx->Pack); 698 699 pipe->transfer_destroy(pipe, tex_xfer); 700 701 /* destroy the temp / dest surface */ 702 util_destroy_rgba_surface(dst_texture, dst_surface); 703} 704 705 706 707/** 708 * Called via ctx->Driver.GetTexImage() 709 */ 710static void 711st_GetTexImage(struct gl_context * ctx, 712 GLenum format, GLenum type, GLvoid * pixels, 713 struct gl_texture_image *texImage) 714{ 715 struct st_texture_image *stImage = st_texture_image(texImage); 716 717 if (stImage->pt && util_format_is_s3tc(stImage->pt->format)) { 718 /* Need to decompress the texture. 719 * We'll do this by rendering a textured quad (which is hopefully 720 * faster than using the fallback code in texcompress.c). 721 * Note that we only expect RGBA formats (no Z/depth formats). 722 */ 723 decompress_with_blit(ctx, format, type, pixels, texImage); 724 } 725 else { 726 _mesa_get_teximage(ctx, format, type, pixels, texImage); 727 } 728} 729 730 731/** 732 * Do a CopyTexSubImage operation using a read transfer from the source, 733 * a write transfer to the destination and get_tile()/put_tile() to access 734 * the pixels/texels. 735 * 736 * Note: srcY=0=TOP of renderbuffer 737 */ 738static void 739fallback_copy_texsubimage(struct gl_context *ctx, 740 struct st_renderbuffer *strb, 741 struct st_texture_image *stImage, 742 GLenum baseFormat, 743 GLint destX, GLint destY, GLint destZ, 744 GLint srcX, GLint srcY, 745 GLsizei width, GLsizei height) 746{ 747 struct st_context *st = st_context(ctx); 748 struct pipe_context *pipe = st->pipe; 749 struct pipe_transfer *src_trans; 750 GLvoid *texDest; 751 enum pipe_transfer_usage transfer_usage; 752 753 if (ST_DEBUG & DEBUG_FALLBACK) 754 debug_printf("%s: fallback processing\n", __FUNCTION__); 755 756 assert(width <= MAX_WIDTH); 757 758 if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) { 759 srcY = strb->Base.Height - srcY - height; 760 } 761 762 src_trans = pipe_get_transfer(pipe, 763 strb->texture, 764 strb->rtt_level, 765 strb->rtt_face + strb->rtt_slice, 766 PIPE_TRANSFER_READ, 767 srcX, srcY, 768 width, height); 769 770 if ((baseFormat == GL_DEPTH_COMPONENT || 771 baseFormat == GL_DEPTH_STENCIL) && 772 util_format_is_depth_and_stencil(stImage->pt->format)) 773 transfer_usage = PIPE_TRANSFER_READ_WRITE; 774 else 775 transfer_usage = PIPE_TRANSFER_WRITE; 776 777 /* XXX this used to ignore destZ param */ 778 texDest = st_texture_image_map(st, stImage, destZ, transfer_usage, 779 destX, destY, width, height); 780 781 if (baseFormat == GL_DEPTH_COMPONENT || 782 baseFormat == GL_DEPTH_STENCIL) { 783 const GLboolean scaleOrBias = (ctx->Pixel.DepthScale != 1.0F || 784 ctx->Pixel.DepthBias != 0.0F); 785 GLint row, yStep; 786 787 /* determine bottom-to-top vs. top-to-bottom order for src buffer */ 788 if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) { 789 srcY = height - 1; 790 yStep = -1; 791 } 792 else { 793 srcY = 0; 794 yStep = 1; 795 } 796 797 /* To avoid a large temp memory allocation, do copy row by row */ 798 for (row = 0; row < height; row++, srcY += yStep) { 799 uint data[MAX_WIDTH]; 800 pipe_get_tile_z(pipe, src_trans, 0, srcY, width, 1, data); 801 if (scaleOrBias) { 802 _mesa_scale_and_bias_depth_uint(ctx, width, data); 803 } 804 pipe_put_tile_z(pipe, stImage->transfer, 0, row, width, 1, data); 805 } 806 } 807 else { 808 /* RGBA format */ 809 GLfloat *tempSrc = 810 (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat)); 811 812 if (tempSrc && texDest) { 813 const GLint dims = 2; 814 const GLint dstRowStride = stImage->transfer->stride; 815 struct gl_texture_image *texImage = &stImage->base; 816 struct gl_pixelstore_attrib unpack = ctx->DefaultPacking; 817 818 if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) { 819 unpack.Invert = GL_TRUE; 820 } 821 822 /* get float/RGBA image from framebuffer */ 823 /* XXX this usually involves a lot of int/float conversion. 824 * try to avoid that someday. 825 */ 826 pipe_get_tile_rgba_format(pipe, src_trans, 0, 0, width, height, 827 util_format_linear(strb->texture->format), 828 tempSrc); 829 830 /* Store into texture memory. 831 * Note that this does some special things such as pixel transfer 832 * ops and format conversion. In particular, if the dest tex format 833 * is actually RGBA but the user created the texture as GL_RGB we 834 * need to fill-in/override the alpha channel with 1.0. 835 */ 836 _mesa_texstore(ctx, dims, 837 texImage->_BaseFormat, 838 texImage->TexFormat, 839 dstRowStride, 840 (GLubyte **) &texDest, 841 width, height, 1, 842 GL_RGBA, GL_FLOAT, tempSrc, /* src */ 843 &unpack); 844 } 845 else { 846 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexSubImage"); 847 } 848 849 if (tempSrc) 850 free(tempSrc); 851 } 852 853 st_texture_image_unmap(st, stImage); 854 pipe->transfer_destroy(pipe, src_trans); 855} 856 857 858 859/** 860 * If the format of the src renderbuffer and the format of the dest 861 * texture are compatible (in terms of blitting), return a TGSI writemask 862 * to be used during the blit. 863 * If the src/dest are incompatible, return 0. 864 */ 865static unsigned 866compatible_src_dst_formats(struct gl_context *ctx, 867 const struct gl_renderbuffer *src, 868 const struct gl_texture_image *dst) 869{ 870 /* Get logical base formats for the src and dest. 871 * That is, use the user-requested formats and not the actual, device- 872 * chosen formats. 873 * For example, the user may have requested an A8 texture but the 874 * driver may actually be using an RGBA texture format. When we 875 * copy/blit to that texture, we only want to copy the Alpha channel 876 * and not the RGB channels. 877 * 878 * Similarly, when the src FBO was created an RGB format may have been 879 * requested but the driver actually chose an RGBA format. In that case, 880 * we don't want to copy the undefined Alpha channel to the dest texture 881 * (it should be 1.0). 882 */ 883 const GLenum srcFormat = _mesa_base_fbo_format(ctx, src->InternalFormat); 884 const GLenum dstFormat = _mesa_base_tex_format(ctx, dst->InternalFormat); 885 886 /** 887 * XXX when we have red-only and red/green renderbuffers we'll need 888 * to add more cases here (or implement a general-purpose routine that 889 * queries the existance of the R,G,B,A channels in the src and dest). 890 */ 891 if (srcFormat == dstFormat) { 892 /* This is the same as matching_base_formats, which should 893 * always pass, as it did previously. 894 */ 895 return TGSI_WRITEMASK_XYZW; 896 } 897 else if (srcFormat == GL_RGB && dstFormat == GL_RGBA) { 898 /* Make sure that A in the dest is 1. The actual src format 899 * may be RGBA and have undefined A values. 900 */ 901 return TGSI_WRITEMASK_XYZ; 902 } 903 else if (srcFormat == GL_RGBA && dstFormat == GL_RGB) { 904 /* Make sure that A in the dest is 1. The actual dst format 905 * may be RGBA and will need A=1 to provide proper alpha values 906 * when sampled later. 907 */ 908 return TGSI_WRITEMASK_XYZ; 909 } 910 else { 911 if (ST_DEBUG & DEBUG_FALLBACK) 912 debug_printf("%s failed for src %s, dst %s\n", 913 __FUNCTION__, 914 _mesa_lookup_enum_by_nr(srcFormat), 915 _mesa_lookup_enum_by_nr(dstFormat)); 916 917 /* Otherwise fail. 918 */ 919 return 0; 920 } 921} 922 923 924 925/** 926 * Do a CopyTex[Sub]Image1/2/3D() using a hardware (blit) path if possible. 927 * Note that the region to copy has already been clipped so we know we 928 * won't read from outside the source renderbuffer's bounds. 929 * 930 * Note: srcY=0=Bottom of renderbuffer (GL convention) 931 */ 932static void 933st_copy_texsubimage(struct gl_context *ctx, 934 struct gl_texture_image *texImage, 935 GLint destX, GLint destY, GLint destZ, 936 struct gl_renderbuffer *rb, 937 GLint srcX, GLint srcY, 938 GLsizei width, GLsizei height) 939{ 940 struct st_texture_image *stImage = st_texture_image(texImage); 941 const GLenum texBaseFormat = texImage->_BaseFormat; 942 struct gl_framebuffer *fb = ctx->ReadBuffer; 943 struct st_renderbuffer *strb; 944 struct st_context *st = st_context(ctx); 945 struct pipe_context *pipe = st->pipe; 946 struct pipe_screen *screen = pipe->screen; 947 enum pipe_format dest_format, src_format; 948 GLboolean matching_base_formats; 949 GLuint format_writemask, sample_count; 950 struct pipe_surface *dest_surface = NULL; 951 GLboolean do_flip = (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP); 952 struct pipe_surface surf_tmpl; 953 unsigned int dst_usage; 954 GLint srcY0, srcY1; 955 956 /* make sure finalize_textures has been called? 957 */ 958 if (0) st_validate_state(st); 959 960 /* determine if copying depth or color data */ 961 if (texBaseFormat == GL_DEPTH_COMPONENT || 962 texBaseFormat == GL_DEPTH_STENCIL) { 963 strb = st_renderbuffer(fb->Attachment[BUFFER_DEPTH].Renderbuffer); 964 } 965 else { 966 /* texBaseFormat == GL_RGB, GL_RGBA, GL_ALPHA, etc */ 967 strb = st_renderbuffer(fb->_ColorReadBuffer); 968 } 969 970 if (!strb || !strb->surface || !stImage->pt) { 971 debug_printf("%s: null strb or stImage\n", __FUNCTION__); 972 return; 973 } 974 975 sample_count = strb->surface->texture->nr_samples; 976 /* I believe this would be legal, presumably would need to do a resolve 977 for color, and for depth/stencil spec says to just use one of the 978 depth/stencil samples per pixel? Need some transfer clarifications. */ 979 assert(sample_count < 2); 980 981 assert(strb); 982 assert(strb->surface); 983 assert(stImage->pt); 984 985 src_format = strb->surface->format; 986 dest_format = stImage->pt->format; 987 988 /* 989 * Determine if the src framebuffer and dest texture have the same 990 * base format. We need this to detect a case such as the framebuffer 991 * being GL_RGBA but the texture being GL_RGB. If the actual hardware 992 * texture format stores RGBA we need to set A=1 (overriding the 993 * framebuffer's alpha values). We can't do that with the blit or 994 * textured-quad paths. 995 */ 996 matching_base_formats = 997 (_mesa_get_format_base_format(strb->Base.Format) == 998 _mesa_get_format_base_format(texImage->TexFormat)); 999 1000 if (ctx->_ImageTransferState) { 1001 goto fallback; 1002 } 1003 1004 if (matching_base_formats && 1005 src_format == dest_format && 1006 !do_flip) { 1007 /* use surface_copy() / blit */ 1008 struct pipe_box src_box; 1009 u_box_2d_zslice(srcX, srcY, strb->surface->u.tex.first_layer, 1010 width, height, &src_box); 1011 1012 /* for resource_copy_region(), y=0=top, always */ 1013 pipe->resource_copy_region(pipe, 1014 /* dest */ 1015 stImage->pt, 1016 stImage->base.Level, 1017 destX, destY, destZ + stImage->base.Face, 1018 /* src */ 1019 strb->texture, 1020 strb->surface->u.tex.level, 1021 &src_box); 1022 return; 1023 } 1024 1025 if (texBaseFormat == GL_DEPTH_STENCIL) { 1026 goto fallback; 1027 } 1028 1029 if (texBaseFormat == GL_DEPTH_COMPONENT) { 1030 format_writemask = TGSI_WRITEMASK_XYZW; 1031 dst_usage = PIPE_BIND_DEPTH_STENCIL; 1032 } 1033 else { 1034 format_writemask = compatible_src_dst_formats(ctx, &strb->Base, texImage); 1035 dst_usage = PIPE_BIND_RENDER_TARGET; 1036 } 1037 1038 if (!format_writemask || 1039 !screen->is_format_supported(screen, src_format, 1040 PIPE_TEXTURE_2D, sample_count, 1041 PIPE_BIND_SAMPLER_VIEW) || 1042 !screen->is_format_supported(screen, dest_format, 1043 PIPE_TEXTURE_2D, 0, 1044 dst_usage)) { 1045 goto fallback; 1046 } 1047 1048 if (do_flip) { 1049 srcY1 = strb->Base.Height - srcY - height; 1050 srcY0 = srcY1 + height; 1051 } 1052 else { 1053 srcY0 = srcY; 1054 srcY1 = srcY0 + height; 1055 } 1056 1057 /* Disable conditional rendering. */ 1058 if (st->render_condition) { 1059 pipe->render_condition(pipe, NULL, 0); 1060 } 1061 1062 memset(&surf_tmpl, 0, sizeof(surf_tmpl)); 1063 surf_tmpl.format = util_format_linear(stImage->pt->format); 1064 surf_tmpl.usage = dst_usage; 1065 surf_tmpl.u.tex.level = stImage->base.Level; 1066 surf_tmpl.u.tex.first_layer = stImage->base.Face + destZ; 1067 surf_tmpl.u.tex.last_layer = stImage->base.Face + destZ; 1068 1069 dest_surface = pipe->create_surface(pipe, stImage->pt, 1070 &surf_tmpl); 1071 util_blit_pixels_writemask(st->blit, 1072 strb->texture, 1073 strb->surface->u.tex.level, 1074 srcX, srcY0, 1075 srcX + width, srcY1, 1076 strb->surface->u.tex.first_layer, 1077 dest_surface, 1078 destX, destY, 1079 destX + width, destY + height, 1080 0.0, PIPE_TEX_MIPFILTER_NEAREST, 1081 format_writemask); 1082 pipe_surface_reference(&dest_surface, NULL); 1083 1084 /* Restore conditional rendering state. */ 1085 if (st->render_condition) { 1086 pipe->render_condition(pipe, st->render_condition, 1087 st->condition_mode); 1088 } 1089 1090 return; 1091 1092fallback: 1093 /* software fallback */ 1094 fallback_copy_texsubimage(ctx, 1095 strb, stImage, texBaseFormat, 1096 destX, destY, destZ, 1097 srcX, srcY, width, height); 1098} 1099 1100 1101 1102static void 1103st_CopyTexSubImage1D(struct gl_context *ctx, 1104 struct gl_texture_image *texImage, 1105 GLint xoffset, 1106 struct gl_renderbuffer *rb, 1107 GLint x, GLint y, GLsizei width) 1108{ 1109 const GLint yoffset = 0, zoffset = 0; 1110 const GLsizei height = 1; 1111 st_copy_texsubimage(ctx, texImage, 1112 xoffset, yoffset, zoffset, /* destX,Y,Z */ 1113 rb, x, y, width, height); /* src X, Y, size */ 1114} 1115 1116 1117static void 1118st_CopyTexSubImage2D(struct gl_context *ctx, 1119 struct gl_texture_image *texImage, 1120 GLint xoffset, GLint yoffset, 1121 struct gl_renderbuffer *rb, 1122 GLint x, GLint y, GLsizei width, GLsizei height) 1123{ 1124 const GLint zoffset = 0; 1125 st_copy_texsubimage(ctx, texImage, 1126 xoffset, yoffset, zoffset, /* destX,Y,Z */ 1127 rb, x, y, width, height); /* src X, Y, size */ 1128} 1129 1130 1131static void 1132st_CopyTexSubImage3D(struct gl_context *ctx, 1133 struct gl_texture_image *texImage, 1134 GLint xoffset, GLint yoffset, GLint zoffset, 1135 struct gl_renderbuffer *rb, 1136 GLint x, GLint y, GLsizei width, GLsizei height) 1137{ 1138 st_copy_texsubimage(ctx, texImage, 1139 xoffset, yoffset, zoffset, /* destX,Y,Z */ 1140 rb, x, y, width, height); /* src X, Y, size */ 1141} 1142 1143 1144/** 1145 * Copy image data from stImage into the texture object 'stObj' at level 1146 * 'dstLevel'. 1147 */ 1148static void 1149copy_image_data_to_texture(struct st_context *st, 1150 struct st_texture_object *stObj, 1151 GLuint dstLevel, 1152 struct st_texture_image *stImage) 1153{ 1154 /* debug checks */ 1155 { 1156 const struct gl_texture_image *dstImage = 1157 stObj->base.Image[stImage->base.Face][dstLevel]; 1158 assert(dstImage); 1159 assert(dstImage->Width == stImage->base.Width); 1160 assert(dstImage->Height == stImage->base.Height); 1161 assert(dstImage->Depth == stImage->base.Depth); 1162 } 1163 1164 if (stImage->pt) { 1165 /* Copy potentially with the blitter: 1166 */ 1167 GLuint src_level; 1168 if (stImage->pt != stObj->pt) 1169 src_level = 0; 1170 else 1171 src_level = stImage->base.Level; 1172 1173 st_texture_image_copy(st->pipe, 1174 stObj->pt, dstLevel, /* dest texture, level */ 1175 stImage->pt, src_level, /* src texture, level */ 1176 stImage->base.Face); 1177 1178 pipe_resource_reference(&stImage->pt, NULL); 1179 } 1180 else if (stImage->TexData) { 1181 /* Copy from malloc'd memory */ 1182 /* XXX this should be re-examined/tested with a compressed format */ 1183 GLuint blockSize = util_format_get_blocksize(stObj->pt->format); 1184 GLuint srcRowStride = stImage->base.Width * blockSize; 1185 GLuint srcSliceStride = stImage->base.Height * srcRowStride; 1186 st_texture_image_data(st, 1187 stObj->pt, 1188 stImage->base.Face, 1189 dstLevel, 1190 stImage->TexData, 1191 srcRowStride, 1192 srcSliceStride); 1193 _mesa_align_free(stImage->TexData); 1194 stImage->TexData = NULL; 1195 } 1196 1197 pipe_resource_reference(&stImage->pt, stObj->pt); 1198} 1199 1200 1201/** 1202 * Called during state validation. When this function is finished, 1203 * the texture object should be ready for rendering. 1204 * \return GL_TRUE for success, GL_FALSE for failure (out of mem) 1205 */ 1206GLboolean 1207st_finalize_texture(struct gl_context *ctx, 1208 struct pipe_context *pipe, 1209 struct gl_texture_object *tObj) 1210{ 1211 struct st_context *st = st_context(ctx); 1212 struct st_texture_object *stObj = st_texture_object(tObj); 1213 const GLuint nr_faces = (stObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1; 1214 GLuint face; 1215 struct st_texture_image *firstImage; 1216 enum pipe_format firstImageFormat; 1217 GLuint ptWidth, ptHeight, ptDepth, ptLayers; 1218 1219 if (stObj->base._Complete) { 1220 /* The texture is complete and we know exactly how many mipmap levels 1221 * are present/needed. This is conditional because we may be called 1222 * from the st_generate_mipmap() function when the texture object is 1223 * incomplete. In that case, we'll have set stObj->lastLevel before 1224 * we get here. 1225 */ 1226 if (stObj->base.Sampler.MinFilter == GL_LINEAR || 1227 stObj->base.Sampler.MinFilter == GL_NEAREST) 1228 stObj->lastLevel = stObj->base.BaseLevel; 1229 else 1230 stObj->lastLevel = stObj->base._MaxLevel; 1231 } 1232 1233 firstImage = st_texture_image(stObj->base.Image[0][stObj->base.BaseLevel]); 1234 assert(firstImage); 1235 1236 /* If both firstImage and stObj point to a texture which can contain 1237 * all active images, favour firstImage. Note that because of the 1238 * completeness requirement, we know that the image dimensions 1239 * will match. 1240 */ 1241 if (firstImage->pt && 1242 firstImage->pt != stObj->pt && 1243 (!stObj->pt || firstImage->pt->last_level >= stObj->pt->last_level)) { 1244 pipe_resource_reference(&stObj->pt, firstImage->pt); 1245 pipe_sampler_view_reference(&stObj->sampler_view, NULL); 1246 } 1247 1248 /* Find gallium format for the Mesa texture */ 1249 firstImageFormat = st_mesa_format_to_pipe_format(firstImage->base.TexFormat); 1250 1251 /* Find size of level=0 Gallium mipmap image, plus number of texture layers */ 1252 { 1253 GLuint width, height, depth; 1254 if (!guess_base_level_size(stObj->base.Target, 1255 firstImage->base.Width2, 1256 firstImage->base.Height2, 1257 firstImage->base.Depth2, 1258 firstImage->base.Level, 1259 &width, &height, &depth)) { 1260 width = stObj->width0; 1261 height = stObj->height0; 1262 depth = stObj->depth0; 1263 } 1264 /* convert GL dims to Gallium dims */ 1265 st_gl_texture_dims_to_pipe_dims(stObj->base.Target, width, height, depth, 1266 &ptWidth, &ptHeight, &ptDepth, &ptLayers); 1267 } 1268 1269 /* If we already have a gallium texture, check that it matches the texture 1270 * object's format, target, size, num_levels, etc. 1271 */ 1272 if (stObj->pt) { 1273 if (stObj->pt->target != gl_target_to_pipe(stObj->base.Target) || 1274 !st_sampler_compat_formats(stObj->pt->format, firstImageFormat) || 1275 stObj->pt->last_level < stObj->lastLevel || 1276 stObj->pt->width0 != ptWidth || 1277 stObj->pt->height0 != ptHeight || 1278 stObj->pt->depth0 != ptDepth || 1279 stObj->pt->array_size != ptLayers) 1280 { 1281 /* The gallium texture does not match the Mesa texture so delete the 1282 * gallium texture now. We'll make a new one below. 1283 */ 1284 pipe_resource_reference(&stObj->pt, NULL); 1285 pipe_sampler_view_reference(&stObj->sampler_view, NULL); 1286 st->dirty.st |= ST_NEW_FRAMEBUFFER; 1287 } 1288 } 1289 1290 /* May need to create a new gallium texture: 1291 */ 1292 if (!stObj->pt) { 1293 GLuint bindings = default_bindings(st, firstImageFormat); 1294 1295 stObj->pt = st_texture_create(st, 1296 gl_target_to_pipe(stObj->base.Target), 1297 firstImageFormat, 1298 stObj->lastLevel, 1299 ptWidth, 1300 ptHeight, 1301 ptDepth, 1302 ptLayers, 1303 bindings); 1304 1305 if (!stObj->pt) { 1306 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage"); 1307 return GL_FALSE; 1308 } 1309 } 1310 1311 /* Pull in any images not in the object's texture: 1312 */ 1313 for (face = 0; face < nr_faces; face++) { 1314 GLuint level; 1315 for (level = stObj->base.BaseLevel; level <= stObj->lastLevel; level++) { 1316 struct st_texture_image *stImage = 1317 st_texture_image(stObj->base.Image[face][level]); 1318 1319 /* Need to import images in main memory or held in other textures. 1320 */ 1321 if (stImage && stObj->pt != stImage->pt) { 1322 if (level == 0 || 1323 (stImage->base.Width == u_minify(stObj->width0, level) && 1324 stImage->base.Height == u_minify(stObj->height0, level) && 1325 stImage->base.Depth == u_minify(stObj->depth0, level))) { 1326 /* src image fits expected dest mipmap level size */ 1327 copy_image_data_to_texture(st, stObj, level, stImage); 1328 } 1329 } 1330 } 1331 } 1332 1333 return GL_TRUE; 1334} 1335 1336 1337/** 1338 * Returns pointer to a default/dummy texture. 1339 * This is typically used when the current shader has tex/sample instructions 1340 * but the user has not provided a (any) texture(s). 1341 */ 1342struct gl_texture_object * 1343st_get_default_texture(struct st_context *st) 1344{ 1345 if (!st->default_texture) { 1346 static const GLenum target = GL_TEXTURE_2D; 1347 GLubyte pixels[16][16][4]; 1348 struct gl_texture_object *texObj; 1349 struct gl_texture_image *texImg; 1350 GLuint i, j; 1351 1352 /* The ARB_fragment_program spec says (0,0,0,1) should be returned 1353 * when attempting to sample incomplete textures. 1354 */ 1355 for (i = 0; i < 16; i++) { 1356 for (j = 0; j < 16; j++) { 1357 pixels[i][j][0] = 0; 1358 pixels[i][j][1] = 0; 1359 pixels[i][j][2] = 0; 1360 pixels[i][j][3] = 255; 1361 } 1362 } 1363 1364 texObj = st->ctx->Driver.NewTextureObject(st->ctx, 0, target); 1365 1366 texImg = _mesa_get_tex_image(st->ctx, texObj, target, 0); 1367 1368 _mesa_init_teximage_fields(st->ctx, texImg, 1369 16, 16, 1, 0, /* w, h, d, border */ 1370 GL_RGBA, MESA_FORMAT_RGBA8888); 1371 1372 _mesa_store_teximage2d(st->ctx, texImg, 1373 GL_RGBA, /* level, intformat */ 1374 16, 16, 1, /* w, h, d, border */ 1375 GL_RGBA, GL_UNSIGNED_BYTE, pixels, 1376 &st->ctx->DefaultPacking); 1377 1378 texObj->Sampler.MinFilter = GL_NEAREST; 1379 texObj->Sampler.MagFilter = GL_NEAREST; 1380 texObj->_Complete = GL_TRUE; 1381 1382 st->default_texture = texObj; 1383 } 1384 return st->default_texture; 1385} 1386 1387 1388/** 1389 * Called via ctx->Driver.AllocTextureStorage() to allocate texture memory 1390 * for a whole mipmap stack. 1391 */ 1392static GLboolean 1393st_AllocTextureStorage(struct gl_context *ctx, 1394 struct gl_texture_object *texObj, 1395 GLsizei levels, GLsizei width, 1396 GLsizei height, GLsizei depth) 1397{ 1398 const GLuint numFaces = (texObj->Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1; 1399 struct st_context *st = st_context(ctx); 1400 struct st_texture_object *stObj = st_texture_object(texObj); 1401 GLuint ptWidth, ptHeight, ptDepth, ptLayers, bindings; 1402 enum pipe_format fmt; 1403 GLint level; 1404 1405 assert(levels > 0); 1406 1407 /* Save the level=0 dimensions */ 1408 stObj->width0 = width; 1409 stObj->height0 = height; 1410 stObj->depth0 = depth; 1411 stObj->lastLevel = levels - 1; 1412 1413 fmt = st_mesa_format_to_pipe_format(texObj->Image[0][0]->TexFormat); 1414 1415 bindings = default_bindings(st, fmt); 1416 1417 st_gl_texture_dims_to_pipe_dims(texObj->Target, 1418 width, height, depth, 1419 &ptWidth, &ptHeight, &ptDepth, &ptLayers); 1420 1421 stObj->pt = st_texture_create(st, 1422 gl_target_to_pipe(texObj->Target), 1423 fmt, 1424 levels, 1425 ptWidth, 1426 ptHeight, 1427 ptDepth, 1428 ptLayers, 1429 bindings); 1430 if (!stObj->pt) 1431 return GL_FALSE; 1432 1433 /* Set image resource pointers */ 1434 for (level = 0; level < levels; level++) { 1435 GLuint face; 1436 for (face = 0; face < numFaces; face++) { 1437 struct st_texture_image *stImage = 1438 st_texture_image(texObj->Image[face][level]); 1439 pipe_resource_reference(&stImage->pt, stObj->pt); 1440 } 1441 } 1442 1443 return GL_TRUE; 1444} 1445 1446 1447 1448void 1449st_init_texture_functions(struct dd_function_table *functions) 1450{ 1451 functions->ChooseTextureFormat = st_ChooseTextureFormat; 1452 functions->TexImage1D = st_TexImage1D; 1453 functions->TexImage2D = st_TexImage2D; 1454 functions->TexImage3D = st_TexImage3D; 1455 functions->TexSubImage1D = _mesa_store_texsubimage1d; 1456 functions->TexSubImage2D = _mesa_store_texsubimage2d; 1457 functions->TexSubImage3D = _mesa_store_texsubimage3d; 1458 functions->CompressedTexSubImage1D = _mesa_store_compressed_texsubimage1d; 1459 functions->CompressedTexSubImage2D = _mesa_store_compressed_texsubimage2d; 1460 functions->CompressedTexSubImage3D = _mesa_store_compressed_texsubimage3d; 1461 functions->CopyTexSubImage1D = st_CopyTexSubImage1D; 1462 functions->CopyTexSubImage2D = st_CopyTexSubImage2D; 1463 functions->CopyTexSubImage3D = st_CopyTexSubImage3D; 1464 functions->GenerateMipmap = st_generate_mipmap; 1465 1466 functions->GetTexImage = st_GetTexImage; 1467 1468 /* compressed texture functions */ 1469 functions->CompressedTexImage2D = st_CompressedTexImage2D; 1470 functions->GetCompressedTexImage = _mesa_get_compressed_teximage; 1471 1472 functions->NewTextureObject = st_NewTextureObject; 1473 functions->NewTextureImage = st_NewTextureImage; 1474 functions->DeleteTextureImage = st_DeleteTextureImage; 1475 functions->DeleteTexture = st_DeleteTextureObject; 1476 functions->AllocTextureImageBuffer = st_AllocTextureImageBuffer; 1477 functions->FreeTextureImageBuffer = st_FreeTextureImageBuffer; 1478 functions->MapTextureImage = st_MapTextureImage; 1479 functions->UnmapTextureImage = st_UnmapTextureImage; 1480 1481 /* XXX Temporary until we can query pipe's texture sizes */ 1482 functions->TestProxyTexImage = _mesa_test_proxy_teximage; 1483 1484 functions->AllocTextureStorage = st_AllocTextureStorage; 1485} 1486