2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (c) 2009 VMware, Inc.
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:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
28 * Code for glGetTexImage() and glGetCompressedTexImage().
33 #include "bufferobj.h"
37 #include "format_unpack.h"
38 #include "glformats.h"
43 #include "pixelstore.h"
44 #include "texcompress.h"
45 #include "texgetimage.h"
49 #include "format_utils.h"
50 #include "pixeltransfer.h"
53 * Can the given type represent negative values?
55 static inline GLboolean
56 type_needs_clamping(GLenum type)
63 case GL_HALF_FLOAT_ARB:
64 case GL_UNSIGNED_INT_10F_11F_11F_REV:
65 case GL_UNSIGNED_INT_5_9_9_9_REV:
74 * glGetTexImage for depth/Z pixels.
77 get_tex_depth(struct gl_context *ctx, GLuint dimensions,
78 GLint xoffset, GLint yoffset, GLint zoffset,
79 GLsizei width, GLsizei height, GLint depth,
80 GLenum format, GLenum type, GLvoid *pixels,
81 struct gl_texture_image *texImage)
84 GLfloat *depthRow = malloc(width * sizeof(GLfloat));
87 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
91 for (img = 0; img < depth; img++) {
95 /* map src texture buffer */
96 ctx->Driver.MapTextureImage(ctx, texImage, zoffset + img,
97 xoffset, yoffset, width, height,
98 GL_MAP_READ_BIT, &srcMap, &srcRowStride);
101 for (row = 0; row < height; row++) {
102 void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
103 width, height, format, type,
105 const GLubyte *src = srcMap + row * srcRowStride;
106 _mesa_unpack_float_z_row(texImage->TexFormat, width, src, depthRow);
107 _mesa_pack_depth_span(ctx, width, dest, type, depthRow, &ctx->Pack);
110 ctx->Driver.UnmapTextureImage(ctx, texImage, zoffset + img);
113 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
123 * glGetTexImage for depth/stencil pixels.
126 get_tex_depth_stencil(struct gl_context *ctx, GLuint dimensions,
127 GLint xoffset, GLint yoffset, GLint zoffset,
128 GLsizei width, GLsizei height, GLint depth,
129 GLenum format, GLenum type, GLvoid *pixels,
130 struct gl_texture_image *texImage)
134 assert(format == GL_DEPTH_STENCIL);
135 assert(type == GL_UNSIGNED_INT_24_8 ||
136 type == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
138 for (img = 0; img < depth; img++) {
142 /* map src texture buffer */
143 ctx->Driver.MapTextureImage(ctx, texImage, zoffset + img,
144 xoffset, yoffset, width, height,
145 GL_MAP_READ_BIT, &srcMap, &rowstride);
148 for (row = 0; row < height; row++) {
149 const GLubyte *src = srcMap + row * rowstride;
150 void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
151 width, height, format, type,
153 _mesa_unpack_depth_stencil_row(texImage->TexFormat,
155 (const GLuint *) src,
157 if (ctx->Pack.SwapBytes) {
158 _mesa_swap4((GLuint *) dest, width);
162 ctx->Driver.UnmapTextureImage(ctx, texImage, zoffset + img);
165 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
172 * glGetTexImage for stencil pixels.
175 get_tex_stencil(struct gl_context *ctx, GLuint dimensions,
176 GLint xoffset, GLint yoffset, GLint zoffset,
177 GLsizei width, GLsizei height, GLint depth,
178 GLenum format, GLenum type, GLvoid *pixels,
179 struct gl_texture_image *texImage)
183 assert(format == GL_STENCIL_INDEX);
185 for (img = 0; img < depth; img++) {
189 /* map src texture buffer */
190 ctx->Driver.MapTextureImage(ctx, texImage, zoffset + img,
191 xoffset, yoffset, width, height,
193 &srcMap, &rowstride);
196 for (row = 0; row < height; row++) {
197 const GLubyte *src = srcMap + row * rowstride;
198 void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
199 width, height, format, type,
201 _mesa_unpack_ubyte_stencil_row(texImage->TexFormat,
203 (const GLuint *) src,
207 ctx->Driver.UnmapTextureImage(ctx, texImage, zoffset + img);
210 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
218 * glGetTexImage for YCbCr pixels.
221 get_tex_ycbcr(struct gl_context *ctx, GLuint dimensions,
222 GLint xoffset, GLint yoffset, GLint zoffset,
223 GLsizei width, GLsizei height, GLint depth,
224 GLenum format, GLenum type, GLvoid *pixels,
225 struct gl_texture_image *texImage)
229 for (img = 0; img < depth; img++) {
233 /* map src texture buffer */
234 ctx->Driver.MapTextureImage(ctx, texImage, zoffset + img,
235 xoffset, yoffset, width, height,
236 GL_MAP_READ_BIT, &srcMap, &rowstride);
239 for (row = 0; row < height; row++) {
240 const GLubyte *src = srcMap + row * rowstride;
241 void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
242 width, height, format, type,
244 memcpy(dest, src, width * sizeof(GLushort));
246 /* check for byte swapping */
247 if ((texImage->TexFormat == MESA_FORMAT_YCBCR
248 && type == GL_UNSIGNED_SHORT_8_8_REV_MESA) ||
249 (texImage->TexFormat == MESA_FORMAT_YCBCR_REV
250 && type == GL_UNSIGNED_SHORT_8_8_MESA)) {
251 if (!ctx->Pack.SwapBytes)
252 _mesa_swap2((GLushort *) dest, width);
254 else if (ctx->Pack.SwapBytes) {
255 _mesa_swap2((GLushort *) dest, width);
259 ctx->Driver.UnmapTextureImage(ctx, texImage, zoffset + img);
262 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
269 * Depending on the base format involved we may need to apply a rebase
270 * transform (for example: if we download to a Luminance format we want
274 teximage_needs_rebase(mesa_format texFormat, GLenum baseFormat,
275 bool is_compressed, uint8_t *rebaseSwizzle)
277 bool needsRebase = false;
279 if (baseFormat == GL_LUMINANCE ||
280 baseFormat == GL_INTENSITY) {
282 rebaseSwizzle[0] = MESA_FORMAT_SWIZZLE_X;
283 rebaseSwizzle[1] = MESA_FORMAT_SWIZZLE_ZERO;
284 rebaseSwizzle[2] = MESA_FORMAT_SWIZZLE_ZERO;
285 rebaseSwizzle[3] = MESA_FORMAT_SWIZZLE_ONE;
286 } else if (baseFormat == GL_LUMINANCE_ALPHA) {
288 rebaseSwizzle[0] = MESA_FORMAT_SWIZZLE_X;
289 rebaseSwizzle[1] = MESA_FORMAT_SWIZZLE_ZERO;
290 rebaseSwizzle[2] = MESA_FORMAT_SWIZZLE_ZERO;
291 rebaseSwizzle[3] = MESA_FORMAT_SWIZZLE_W;
292 } else if (!is_compressed &&
293 (baseFormat != _mesa_get_format_base_format(texFormat))) {
295 _mesa_compute_rgba2base2rgba_component_mapping(baseFormat,
304 * Get a color texture image with decompression.
307 get_tex_rgba_compressed(struct gl_context *ctx, GLuint dimensions,
308 GLint xoffset, GLint yoffset, GLint zoffset,
309 GLsizei width, GLsizei height, GLint depth,
310 GLenum format, GLenum type, GLvoid *pixels,
311 struct gl_texture_image *texImage,
312 GLbitfield transferOps)
314 /* don't want to apply sRGB -> RGB conversion here so override the format */
315 const mesa_format texFormat =
316 _mesa_get_srgb_format_linear(texImage->TexFormat);
317 const GLenum baseFormat = _mesa_get_format_base_format(texFormat);
318 GLfloat *tempImage, *tempSlice;
320 int srcStride, dstStride;
323 uint8_t rebaseSwizzle[4];
325 /* Decompress into temp float buffer, then pack into user buffer */
326 tempImage = malloc(width * height * depth * 4 * sizeof(GLfloat));
328 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage()");
332 /* Decompress the texture image slices - results in 'tempImage' */
333 for (slice = 0; slice < depth; slice++) {
337 tempSlice = tempImage + slice * 4 * width * height;
339 ctx->Driver.MapTextureImage(ctx, texImage, zoffset + slice,
340 xoffset, yoffset, width, height,
342 &srcMap, &srcRowStride);
344 _mesa_decompress_image(texFormat, width, height,
345 srcMap, srcRowStride, tempSlice);
347 ctx->Driver.UnmapTextureImage(ctx, texImage, zoffset + slice);
350 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
356 needsRebase = teximage_needs_rebase(texFormat, baseFormat, true,
359 srcStride = 4 * width * sizeof(GLfloat);
360 dstStride = _mesa_image_row_stride(&ctx->Pack, width, format, type);
361 dstFormat = _mesa_format_from_format_and_type(format, type);
362 tempSlice = tempImage;
363 for (slice = 0; slice < depth; slice++) {
364 void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
365 width, height, format, type,
367 _mesa_format_convert(dest, dstFormat, dstStride,
368 tempSlice, RGBA32_FLOAT, srcStride,
370 needsRebase ? rebaseSwizzle : NULL);
372 /* Handle byte swapping if required */
373 if (ctx->Pack.SwapBytes) {
374 _mesa_swap_bytes_2d_image(format, type, &ctx->Pack,
375 width, height, dest, dest);
378 tempSlice += 4 * width * height;
386 * Return a base GL format given the user-requested format
387 * for glGetTexImage().
390 _mesa_base_pack_format(GLenum format)
395 case GL_BGRA_INTEGER:
396 case GL_RGBA_INTEGER:
404 case GL_GREEN_INTEGER:
406 case GL_BLUE_INTEGER:
408 case GL_ALPHA_INTEGER:
410 case GL_LUMINANCE_INTEGER_EXT:
412 case GL_LUMINANCE_ALPHA_INTEGER_EXT:
413 return GL_LUMINANCE_ALPHA;
421 * Get an uncompressed color texture image.
424 get_tex_rgba_uncompressed(struct gl_context *ctx, GLuint dimensions,
425 GLint xoffset, GLint yoffset, GLint zoffset,
426 GLsizei width, GLsizei height, GLint depth,
427 GLenum format, GLenum type, GLvoid *pixels,
428 struct gl_texture_image *texImage,
429 GLbitfield transferOps)
431 /* don't want to apply sRGB -> RGB conversion here so override the format */
432 const mesa_format texFormat =
433 _mesa_get_srgb_format_linear(texImage->TexFormat);
435 GLboolean dst_is_integer;
438 uint8_t rebaseSwizzle[4];
442 needsRebase = teximage_needs_rebase(texFormat, texImage->_BaseFormat, false,
445 /* Describe the dst format */
446 dst_is_integer = _mesa_is_enum_format_integer(format);
447 dst_format = _mesa_format_from_format_and_type(format, type);
448 dst_stride = _mesa_image_row_stride(&ctx->Pack, width, format, type);
450 /* Since _mesa_format_convert does not handle transferOps we need to handle
451 * them before we call the function. This requires to convert to RGBA float
452 * first so we can call _mesa_apply_rgba_transfer_ops. If the dst format is
453 * integer then transferOps do not apply.
455 assert(!transferOps || (transferOps && !dst_is_integer));
456 (void) dst_is_integer; /* silence unused var warning */
458 for (img = 0; img < depth; img++) {
467 /* map src texture buffer */
468 ctx->Driver.MapTextureImage(ctx, texImage, zoffset + img,
469 xoffset, yoffset, width, height,
471 &srcMap, &rowstride);
473 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
478 dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
479 width, height, format, type,
483 uint32_t rgba_format;
485 bool need_convert = false;
487 /* We will convert to RGBA float */
488 rgba_format = RGBA32_FLOAT;
489 rgba_stride = width * 4 * sizeof(GLfloat);
491 /* If we are lucky and the dst format matches the RGBA format we need
492 * to convert to, then we can convert directly into the dst buffer
493 * and avoid the final conversion/copy from the rgba buffer to the dst
496 if (format == rgba_format) {
500 if (rgba == NULL) { /* Allocate the RGBA buffer only once */
501 rgba = malloc(height * rgba_stride);
503 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage()");
504 ctx->Driver.UnmapTextureImage(ctx, texImage, img);
510 _mesa_format_convert(rgba, rgba_format, rgba_stride,
511 img_src, texFormat, rowstride,
513 needsRebase ? rebaseSwizzle : NULL);
515 /* Handle transfer ops now */
516 _mesa_apply_rgba_transfer_ops(ctx, transferOps, width * height, rgba);
518 /* If we had to rebase, we have already handled that */
521 /* If we were lucky and our RGBA conversion matches the dst format,
527 /* Otherwise, we need to convert from RGBA to dst next */
529 src_format = rgba_format;
530 src_stride = rgba_stride;
532 /* No RGBA conversion needed, convert directly to dst */
534 src_format = texFormat;
535 src_stride = rowstride;
538 /* Do the conversion to destination format */
539 _mesa_format_convert(dest, dst_format, dst_stride,
540 src, src_format, src_stride,
542 needsRebase ? rebaseSwizzle : NULL);
545 /* Handle byte swapping if required */
546 if (ctx->Pack.SwapBytes)
547 _mesa_swap_bytes_2d_image(format, type, &ctx->Pack,
548 width, height, dest, dest);
550 /* Unmap the src texture buffer */
551 ctx->Driver.UnmapTextureImage(ctx, texImage, zoffset + img);
560 * glGetTexImage for color formats (RGBA, RGB, alpha, LA, etc).
561 * Compressed textures are handled here as well.
564 get_tex_rgba(struct gl_context *ctx, GLuint dimensions,
565 GLint xoffset, GLint yoffset, GLint zoffset,
566 GLsizei width, GLsizei height, GLint depth,
567 GLenum format, GLenum type, GLvoid *pixels,
568 struct gl_texture_image *texImage)
570 const GLenum dataType = _mesa_get_format_datatype(texImage->TexFormat);
571 GLbitfield transferOps = 0x0;
573 /* In general, clamping does not apply to glGetTexImage, except when
574 * the returned type of the image can't hold negative values.
576 if (type_needs_clamping(type)) {
577 /* the returned image type can't have negative values */
578 if (dataType == GL_FLOAT ||
579 dataType == GL_HALF_FLOAT ||
580 dataType == GL_SIGNED_NORMALIZED ||
581 format == GL_LUMINANCE ||
582 format == GL_LUMINANCE_ALPHA) {
583 transferOps |= IMAGE_CLAMP_BIT;
587 if (_mesa_is_format_compressed(texImage->TexFormat)) {
588 get_tex_rgba_compressed(ctx, dimensions,
589 xoffset, yoffset, zoffset,
590 width, height, depth,
592 pixels, texImage, transferOps);
595 get_tex_rgba_uncompressed(ctx, dimensions,
596 xoffset, yoffset, zoffset,
597 width, height, depth,
599 pixels, texImage, transferOps);
605 * Try to do glGetTexImage() with simple memcpy().
606 * \return GL_TRUE if done, GL_FALSE otherwise
609 get_tex_memcpy(struct gl_context *ctx,
610 GLint xoffset, GLint yoffset, GLint zoffset,
611 GLsizei width, GLsizei height, GLint depth,
612 GLenum format, GLenum type, GLvoid *pixels,
613 struct gl_texture_image *texImage)
615 const GLenum target = texImage->TexObject->Target;
616 GLboolean memCopy = GL_FALSE;
617 GLenum texBaseFormat = _mesa_get_format_base_format(texImage->TexFormat);
620 * Check if we can use memcpy to copy from the hardware texture
621 * format to the user's format/type.
622 * Note that GL's pixel transfer ops don't apply to glGetTexImage()
624 if ((target == GL_TEXTURE_1D ||
625 target == GL_TEXTURE_2D ||
626 target == GL_TEXTURE_RECTANGLE ||
627 _mesa_is_cube_face(target)) &&
628 texBaseFormat == texImage->_BaseFormat) {
629 memCopy = _mesa_format_matches_format_and_type(texImage->TexFormat,
631 ctx->Pack.SwapBytes, NULL);
635 /* only a single slice is supported at this time */
640 const GLuint bpp = _mesa_get_format_bytes(texImage->TexFormat);
641 const GLint bytesPerRow = width * bpp;
643 _mesa_image_address2d(&ctx->Pack, pixels, width, height,
645 const GLint dstRowStride =
646 _mesa_image_row_stride(&ctx->Pack, width, format, type);
650 /* map src texture buffer */
651 ctx->Driver.MapTextureImage(ctx, texImage, zoffset,
652 xoffset, yoffset, width, height,
653 GL_MAP_READ_BIT, &src, &srcRowStride);
656 if (bytesPerRow == dstRowStride && bytesPerRow == srcRowStride) {
657 memcpy(dst, src, bytesPerRow * texImage->Height);
661 for (row = 0; row < height; row++) {
662 memcpy(dst, src, bytesPerRow);
668 /* unmap src texture buffer */
669 ctx->Driver.UnmapTextureImage(ctx, texImage, zoffset);
672 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
681 * This is the software fallback for Driver.GetTexSubImage().
682 * All error checking will have been done before this routine is called.
683 * We'll call ctx->Driver.MapTextureImage() to access the data, then
684 * unmap with ctx->Driver.UnmapTextureImage().
687 _mesa_GetTexSubImage_sw(struct gl_context *ctx,
688 GLint xoffset, GLint yoffset, GLint zoffset,
689 GLsizei width, GLsizei height, GLint depth,
690 GLenum format, GLenum type, GLvoid *pixels,
691 struct gl_texture_image *texImage)
693 const GLuint dimensions =
694 _mesa_get_texture_dimensions(texImage->TexObject->Target);
696 /* map dest buffer, if PBO */
697 if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
698 /* Packing texture image into a PBO.
699 * Map the (potentially) VRAM-based buffer into our process space so
700 * we can write into it with the code below.
701 * A hardware driver might use a sophisticated blit to move the
702 * texture data to the PBO if the PBO is in VRAM along with the texture.
704 GLubyte *buf = (GLubyte *)
705 ctx->Driver.MapBufferRange(ctx, 0, ctx->Pack.BufferObj->Size,
706 GL_MAP_WRITE_BIT, ctx->Pack.BufferObj,
709 /* out of memory or other unexpected error */
710 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage(map PBO failed)");
713 /* <pixels> was an offset into the PBO.
714 * Now make it a real, client-side pointer inside the mapped region.
716 pixels = ADD_POINTERS(buf, pixels);
719 /* for all array textures, the Z axis selects the layer */
720 if (texImage->TexObject->Target == GL_TEXTURE_1D_ARRAY) {
725 assert(zoffset + depth <= texImage->Height);
727 assert(zoffset + depth <= texImage->Depth);
730 if (get_tex_memcpy(ctx, xoffset, yoffset, zoffset, width, height, depth,
731 format, type, pixels, texImage)) {
734 else if (format == GL_DEPTH_COMPONENT) {
735 get_tex_depth(ctx, dimensions, xoffset, yoffset, zoffset,
736 width, height, depth, format, type, pixels, texImage);
738 else if (format == GL_DEPTH_STENCIL_EXT) {
739 get_tex_depth_stencil(ctx, dimensions, xoffset, yoffset, zoffset,
740 width, height, depth, format, type, pixels,
743 else if (format == GL_STENCIL_INDEX) {
744 get_tex_stencil(ctx, dimensions, xoffset, yoffset, zoffset,
745 width, height, depth, format, type, pixels, texImage);
747 else if (format == GL_YCBCR_MESA) {
748 get_tex_ycbcr(ctx, dimensions, xoffset, yoffset, zoffset,
749 width, height, depth, format, type, pixels, texImage);
752 get_tex_rgba(ctx, dimensions, xoffset, yoffset, zoffset,
753 width, height, depth, format, type, pixels, texImage);
756 if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
757 ctx->Driver.UnmapBuffer(ctx, ctx->Pack.BufferObj, MAP_INTERNAL);
764 * This is the software fallback for Driver.GetCompressedTexSubImage().
765 * All error checking will have been done before this routine is called.
768 _mesa_GetCompressedTexSubImage_sw(struct gl_context *ctx,
769 struct gl_texture_image *texImage,
770 GLint xoffset, GLint yoffset,
771 GLint zoffset, GLsizei width,
772 GLint height, GLint depth,
775 const GLuint dimensions =
776 _mesa_get_texture_dimensions(texImage->TexObject->Target);
777 struct compressed_pixelstore store;
781 _mesa_compute_compressed_pixelstore(dimensions, texImage->TexFormat,
782 width, height, depth,
785 if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
786 /* pack texture image into a PBO */
788 ctx->Driver.MapBufferRange(ctx, 0, ctx->Pack.BufferObj->Size,
789 GL_MAP_WRITE_BIT, ctx->Pack.BufferObj,
792 /* out of memory or other unexpected error */
793 _mesa_error(ctx, GL_OUT_OF_MEMORY,
794 "glGetCompresssedTexImage(map PBO failed)");
797 dest = ADD_POINTERS(dest, img);
802 dest += store.SkipBytes;
804 for (slice = 0; slice < store.CopySlices; slice++) {
808 /* map src texture buffer */
809 ctx->Driver.MapTextureImage(ctx, texImage, zoffset + slice,
810 xoffset, yoffset, width, height,
811 GL_MAP_READ_BIT, &src, &srcRowStride);
815 for (i = 0; i < store.CopyRowsPerSlice; i++) {
816 memcpy(dest, src, store.CopyBytesPerRow);
817 dest += store.TotalBytesPerRow;
821 ctx->Driver.UnmapTextureImage(ctx, texImage, zoffset + slice);
823 /* Advance to next slice */
824 dest += store.TotalBytesPerRow * (store.TotalRowsPerSlice -
825 store.CopyRowsPerSlice);
828 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetCompresssedTexImage");
832 if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
833 ctx->Driver.UnmapBuffer(ctx, ctx->Pack.BufferObj, MAP_INTERNAL);
839 * Validate the texture target enum supplied to glGetTex(ture)Image or
840 * glGetCompressedTex(ture)Image.
843 legal_getteximage_target(struct gl_context *ctx, GLenum target, bool dsa)
850 case GL_TEXTURE_RECTANGLE_NV:
851 return ctx->Extensions.NV_texture_rectangle;
852 case GL_TEXTURE_1D_ARRAY_EXT:
853 case GL_TEXTURE_2D_ARRAY_EXT:
854 return ctx->Extensions.EXT_texture_array;
855 case GL_TEXTURE_CUBE_MAP_ARRAY:
856 return ctx->Extensions.ARB_texture_cube_map_array;
858 /* Section 8.11 (Texture Queries) of the OpenGL 4.5 core profile spec
860 * "An INVALID_ENUM error is generated if the effective target is not
861 * one of TEXTURE_1D, TEXTURE_2D, TEXTURE_3D, TEXTURE_1D_ARRAY,
862 * TEXTURE_2D_ARRAY, TEXTURE_CUBE_MAP_ARRAY, TEXTURE_RECTANGLE, one of
863 * the targets from table 8.19 (for GetTexImage and GetnTexImage *only*),
864 * or TEXTURE_CUBE_MAP (for GetTextureImage *only*)." (Emphasis added.)
866 case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
867 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
868 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
869 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
870 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
871 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
872 return dsa ? GL_FALSE : ctx->Extensions.ARB_texture_cube_map;
873 case GL_TEXTURE_CUBE_MAP:
874 return dsa ? GL_TRUE : GL_FALSE;
882 * Wrapper for _mesa_select_tex_image() which can handle target being
883 * GL_TEXTURE_CUBE_MAP in which case we use zoffset to select a cube face.
884 * This can happen for glGetTextureImage and glGetTextureSubImage (DSA
887 static struct gl_texture_image *
888 select_tex_image(const struct gl_texture_object *texObj, GLenum target,
889 GLint level, GLint zoffset)
892 assert(level < MAX_TEXTURE_LEVELS);
893 if (target == GL_TEXTURE_CUBE_MAP) {
894 assert(zoffset >= 0);
896 target = GL_TEXTURE_CUBE_MAP_POSITIVE_X + zoffset;
898 return _mesa_select_tex_image(texObj, target, level);
903 * Error-check the offset and size arguments to
904 * glGet[Compressed]TextureSubImage(). Also checks if the specified
905 * texture image is missing.
906 * \return true if error, false if no error.
909 dimensions_error_check(struct gl_context *ctx,
910 struct gl_texture_object *texObj,
911 GLenum target, GLint level,
912 GLint xoffset, GLint yoffset, GLint zoffset,
913 GLsizei width, GLsizei height, GLsizei depth,
916 const struct gl_texture_image *texImage;
920 _mesa_error(ctx, GL_INVALID_VALUE, "%s(xoffset = %d)", caller, xoffset);
925 _mesa_error(ctx, GL_INVALID_VALUE, "%s(yoffset = %d)", caller, yoffset);
930 _mesa_error(ctx, GL_INVALID_VALUE, "%s(zoffset = %d)", caller, zoffset);
935 _mesa_error(ctx, GL_INVALID_VALUE, "%s(width = %d)", caller, width);
940 _mesa_error(ctx, GL_INVALID_VALUE, "%s(height = %d)", caller, height);
945 _mesa_error(ctx, GL_INVALID_VALUE, "%s(depth = %d)", caller, depth);
949 /* do special per-target checks */
953 _mesa_error(ctx, GL_INVALID_VALUE,
954 "%s(1D, yoffset = %d)", caller, yoffset);
958 _mesa_error(ctx, GL_INVALID_VALUE,
959 "%s(1D, height = %d)", caller, height);
963 case GL_TEXTURE_1D_ARRAY:
965 case GL_TEXTURE_RECTANGLE:
967 _mesa_error(ctx, GL_INVALID_VALUE,
968 "%s(zoffset = %d)", caller, zoffset);
972 _mesa_error(ctx, GL_INVALID_VALUE,
973 "%s(depth = %d)", caller, depth);
977 case GL_TEXTURE_CUBE_MAP:
978 /* Non-array cube maps are special because we have a gl_texture_image
981 if (zoffset + depth > 6) {
982 _mesa_error(ctx, GL_INVALID_VALUE,
983 "%s(zoffset + depth = %d)", caller, zoffset + depth);
986 /* check that the range of faces exist */
987 for (i = 0; i < depth; i++) {
988 GLenum face = GL_TEXTURE_CUBE_MAP_POSITIVE_X + zoffset + i;
989 if (!_mesa_select_tex_image(texObj, face, level)) {
990 /* non-existant face */
991 _mesa_error(ctx, GL_INVALID_OPERATION,
992 "%s(missing cube face)", caller);
1001 texImage = select_tex_image(texObj, target, level, zoffset);
1003 /* missing texture image */
1004 _mesa_error(ctx, GL_INVALID_OPERATION, "%s(missing image)", caller);
1008 if (xoffset + width > texImage->Width) {
1009 _mesa_error(ctx, GL_INVALID_VALUE,
1010 "%s(xoffset %d + width %d > %u)",
1011 caller, xoffset, width, texImage->Width);
1015 if (yoffset + height > texImage->Height) {
1016 _mesa_error(ctx, GL_INVALID_VALUE,
1017 "%s(yoffset %d + height %d > %u)",
1018 caller, yoffset, height, texImage->Height);
1022 if (target != GL_TEXTURE_CUBE_MAP) {
1023 /* Cube map error checking was done above */
1024 if (zoffset + depth > texImage->Depth) {
1025 _mesa_error(ctx, GL_INVALID_VALUE,
1026 "%s(zoffset %d + depth %d > %u)",
1027 caller, zoffset, depth, texImage->Depth);
1032 /* Extra checks for compressed textures */
1035 _mesa_get_format_block_size_3d(texImage->TexFormat, &bw, &bh, &bd);
1036 if (bw > 1 || bh > 1 || bd > 1) {
1037 /* offset must be multiple of block size */
1038 if (xoffset % bw != 0) {
1039 _mesa_error(ctx, GL_INVALID_VALUE,
1040 "%s(xoffset = %d)", caller, xoffset);
1043 if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY) {
1044 if (yoffset % bh != 0) {
1045 _mesa_error(ctx, GL_INVALID_VALUE,
1046 "%s(yoffset = %d)", caller, yoffset);
1051 if (zoffset % bd != 0) {
1052 _mesa_error(ctx, GL_INVALID_VALUE,
1053 "%s(zoffset = %d)", caller, zoffset);
1057 /* The size must be a multiple of bw x bh x bd, or we must be using a
1058 * offset+size that exactly hits the edge of the image.
1060 if ((width % bw != 0) &&
1061 (xoffset + width != (GLint) texImage->Width)) {
1062 _mesa_error(ctx, GL_INVALID_VALUE,
1063 "%s(width = %d)", caller, width);
1067 if ((height % bh != 0) &&
1068 (yoffset + height != (GLint) texImage->Height)) {
1069 _mesa_error(ctx, GL_INVALID_VALUE,
1070 "%s(height = %d)", caller, height);
1074 if ((depth % bd != 0) &&
1075 (zoffset + depth != (GLint) texImage->Depth)) {
1076 _mesa_error(ctx, GL_INVALID_VALUE,
1077 "%s(depth = %d)", caller, depth);
1083 if (width == 0 || height == 0 || depth == 0) {
1084 /* Not an error, but nothing to do. Return 'true' so that the
1085 * caller simply returns.
1095 * Do PBO-related error checking for getting uncompressed images.
1096 * \return true if there was an error (or the GetTexImage is to be a no-op)
1099 pbo_error_check(struct gl_context *ctx, GLenum target,
1100 GLsizei width, GLsizei height, GLsizei depth,
1101 GLenum format, GLenum type, GLsizei clientMemSize,
1105 const GLuint dimensions = (target == GL_TEXTURE_3D) ? 3 : 2;
1107 if (!_mesa_validate_pbo_access(dimensions, &ctx->Pack, width, height, depth,
1108 format, type, clientMemSize, pixels)) {
1109 if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
1110 _mesa_error(ctx, GL_INVALID_OPERATION,
1111 "%s(out of bounds PBO access)", caller);
1113 _mesa_error(ctx, GL_INVALID_OPERATION,
1114 "%s(out of bounds access: bufSize (%d) is too small)",
1115 caller, clientMemSize);
1120 if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
1121 /* PBO should not be mapped */
1122 if (_mesa_check_disallowed_mapping(ctx->Pack.BufferObj)) {
1123 _mesa_error(ctx, GL_INVALID_OPERATION,
1124 "%s(PBO is mapped)", caller);
1129 if (!_mesa_is_bufferobj(ctx->Pack.BufferObj) && !pixels) {
1130 /* not an error, do nothing */
1139 * Do error checking for all (non-compressed) get-texture-image functions.
1140 * \return true if any error, false if no errors.
1143 getteximage_error_check(struct gl_context *ctx,
1144 struct gl_texture_object *texObj,
1145 GLenum target, GLint level,
1146 GLint xoffset, GLint yoffset, GLint zoffset,
1147 GLsizei width, GLsizei height, GLsizei depth,
1148 GLenum format, GLenum type, GLsizei bufSize,
1149 GLvoid *pixels, const char *caller)
1151 struct gl_texture_image *texImage;
1152 GLenum baseFormat, err;
1157 if (texObj->Target == 0) {
1158 _mesa_error(ctx, GL_INVALID_OPERATION, "%s(invalid texture)", caller);
1162 maxLevels = _mesa_max_texture_levels(ctx, target);
1163 if (level < 0 || level >= maxLevels) {
1164 _mesa_error(ctx, GL_INVALID_VALUE, "%s(level = %d)", caller, level);
1168 err = _mesa_error_check_format_and_type(ctx, format, type);
1169 if (err != GL_NO_ERROR) {
1170 _mesa_error(ctx, err, "%s(format/type)", caller);
1174 if (dimensions_error_check(ctx, texObj, target, level,
1175 xoffset, yoffset, zoffset,
1176 width, height, depth, caller)) {
1180 if (pbo_error_check(ctx, target, width, height, depth,
1181 format, type, bufSize, pixels, caller)) {
1185 texImage = select_tex_image(texObj, target, level, zoffset);
1189 * Format and type checking has been moved up to GetnTexImage and
1190 * GetTextureImage so that it happens before getting the texImage object.
1193 baseFormat = _mesa_get_format_base_format(texImage->TexFormat);
1195 /* Make sure the requested image format is compatible with the
1198 if (_mesa_is_color_format(format)
1199 && !_mesa_is_color_format(baseFormat)) {
1200 _mesa_error(ctx, GL_INVALID_OPERATION,
1201 "%s(format mismatch)", caller);
1204 else if (_mesa_is_depth_format(format)
1205 && !_mesa_is_depth_format(baseFormat)
1206 && !_mesa_is_depthstencil_format(baseFormat)) {
1207 _mesa_error(ctx, GL_INVALID_OPERATION,
1208 "%s(format mismatch)", caller);
1211 else if (_mesa_is_stencil_format(format)
1212 && !ctx->Extensions.ARB_texture_stencil8) {
1213 _mesa_error(ctx, GL_INVALID_ENUM,
1214 "%s(format=GL_STENCIL_INDEX)", caller);
1217 else if (_mesa_is_stencil_format(format)
1218 && !_mesa_is_depthstencil_format(baseFormat)
1219 && !_mesa_is_stencil_format(baseFormat)) {
1220 _mesa_error(ctx, GL_INVALID_OPERATION,
1221 "%s(format mismatch)", caller);
1224 else if (_mesa_is_ycbcr_format(format)
1225 && !_mesa_is_ycbcr_format(baseFormat)) {
1226 _mesa_error(ctx, GL_INVALID_OPERATION,
1227 "%s(format mismatch)", caller);
1230 else if (_mesa_is_depthstencil_format(format)
1231 && !_mesa_is_depthstencil_format(baseFormat)) {
1232 _mesa_error(ctx, GL_INVALID_OPERATION,
1233 "%s(format mismatch)", caller);
1236 else if (!_mesa_is_stencil_format(format) &&
1237 _mesa_is_enum_format_integer(format) !=
1238 _mesa_is_format_integer(texImage->TexFormat)) {
1239 _mesa_error(ctx, GL_INVALID_OPERATION,
1240 "%s(format mismatch)", caller);
1249 * Return the width, height and depth of a texture image.
1250 * This function must be resilient to bad parameter values since
1251 * this is called before full error checking.
1254 get_texture_image_dims(const struct gl_texture_object *texObj,
1255 GLenum target, GLint level,
1256 GLsizei *width, GLsizei *height, GLsizei *depth)
1258 const struct gl_texture_image *texImage = NULL;
1260 if (level >= 0 && level < MAX_TEXTURE_LEVELS) {
1261 texImage = _mesa_select_tex_image(texObj, target, level);
1265 *width = texImage->Width;
1266 *height = texImage->Height;
1267 if (target == GL_TEXTURE_CUBE_MAP) {
1271 *depth = texImage->Depth;
1275 *width = *height = *depth = 0;
1281 * Common code for all (uncompressed) get-texture-image functions.
1282 * \param texObj the texture object (should not be null)
1283 * \param target user-provided target, or 0 for DSA
1284 * \param level image level.
1285 * \param format pixel data format for returned image.
1286 * \param type pixel data type for returned image.
1287 * \param bufSize size of the pixels data buffer.
1288 * \param pixels returned pixel data.
1289 * \param caller name of calling function
1292 get_texture_image(struct gl_context *ctx,
1293 struct gl_texture_object *texObj,
1294 GLenum target, GLint level,
1295 GLint xoffset, GLint yoffset, GLint zoffset,
1296 GLsizei width, GLsizei height, GLint depth,
1297 GLenum format, GLenum type,
1298 GLvoid *pixels, const char *caller)
1300 struct gl_texture_image *texImage;
1301 unsigned firstFace, numFaces, i;
1304 FLUSH_VERTICES(ctx, 0);
1306 texImage = select_tex_image(texObj, target, level, zoffset);
1307 assert(texImage); /* should have been error checked already */
1309 if (_mesa_is_zero_size_texture(texImage)) {
1310 /* no image data to return */
1314 if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE)) {
1315 _mesa_debug(ctx, "%s(tex %u) format = %s, w=%d, h=%d,"
1316 " dstFmt=0x%x, dstType=0x%x\n",
1317 caller, texObj->Name,
1318 _mesa_get_format_name(texImage->TexFormat),
1319 texImage->Width, texImage->Height,
1323 if (target == GL_TEXTURE_CUBE_MAP) {
1324 /* Compute stride between cube faces */
1325 imageStride = _mesa_image_image_stride(&ctx->Pack, width, height,
1327 firstFace = zoffset;
1334 firstFace = _mesa_tex_target_to_face(target);
1338 _mesa_lock_texture(ctx, texObj);
1340 for (i = 0; i < numFaces; i++) {
1341 texImage = texObj->Image[firstFace + i][level];
1344 ctx->Driver.GetTexSubImage(ctx, xoffset, yoffset, zoffset,
1345 width, height, depth,
1346 format, type, pixels, texImage);
1348 /* next cube face */
1349 pixels = (GLubyte *) pixels + imageStride;
1352 _mesa_unlock_texture(ctx, texObj);
1357 _mesa_GetnTexImageARB(GLenum target, GLint level, GLenum format, GLenum type,
1358 GLsizei bufSize, GLvoid *pixels)
1360 GET_CURRENT_CONTEXT(ctx);
1361 static const char *caller = "glGetnTexImageARB";
1362 GLsizei width, height, depth;
1363 struct gl_texture_object *texObj;
1365 if (!legal_getteximage_target(ctx, target, false)) {
1366 _mesa_error(ctx, GL_INVALID_ENUM, "%s", caller);
1370 texObj = _mesa_get_current_tex_object(ctx, target);
1373 get_texture_image_dims(texObj, target, level, &width, &height, &depth);
1375 if (getteximage_error_check(ctx, texObj, target, level,
1376 0, 0, 0, width, height, depth,
1377 format, type, bufSize, pixels, caller)) {
1381 get_texture_image(ctx, texObj, target, level,
1382 0, 0, 0, width, height, depth,
1383 format, type, pixels, caller);
1388 _mesa_GetTexImage(GLenum target, GLint level, GLenum format, GLenum type,
1391 GET_CURRENT_CONTEXT(ctx);
1392 static const char *caller = "glGetTexImage";
1393 GLsizei width, height, depth;
1394 struct gl_texture_object *texObj;
1396 if (!legal_getteximage_target(ctx, target, false)) {
1397 _mesa_error(ctx, GL_INVALID_ENUM, "%s", caller);
1401 texObj = _mesa_get_current_tex_object(ctx, target);
1404 get_texture_image_dims(texObj, target, level, &width, &height, &depth);
1406 if (getteximage_error_check(ctx, texObj, target, level,
1407 0, 0, 0, width, height, depth,
1408 format, type, INT_MAX, pixels, caller)) {
1412 get_texture_image(ctx, texObj, target, level,
1413 0, 0, 0, width, height, depth,
1414 format, type, pixels, caller);
1419 _mesa_GetTextureImage(GLuint texture, GLint level, GLenum format, GLenum type,
1420 GLsizei bufSize, GLvoid *pixels)
1422 GET_CURRENT_CONTEXT(ctx);
1423 GLsizei width, height, depth;
1424 static const char *caller = "glGetTextureImage";
1425 struct gl_texture_object *texObj =
1426 _mesa_lookup_texture_err(ctx, texture, caller);
1432 get_texture_image_dims(texObj, texObj->Target, level,
1433 &width, &height, &depth);
1435 if (getteximage_error_check(ctx, texObj, texObj->Target, level,
1436 0, 0, 0, width, height, depth,
1437 format, type, bufSize, pixels, caller)) {
1441 get_texture_image(ctx, texObj, texObj->Target, level,
1442 0, 0, 0, width, height, depth,
1443 format, type, pixels, caller);
1448 _mesa_GetTextureSubImage(GLuint texture, GLint level,
1449 GLint xoffset, GLint yoffset, GLint zoffset,
1450 GLsizei width, GLsizei height, GLsizei depth,
1451 GLenum format, GLenum type, GLsizei bufSize,
1454 GET_CURRENT_CONTEXT(ctx);
1455 static const char *caller = "glGetTextureSubImage";
1456 struct gl_texture_object *texObj =
1457 _mesa_lookup_texture_err(ctx, texture, caller);
1463 if (getteximage_error_check(ctx, texObj, texObj->Target, level,
1464 xoffset, yoffset, zoffset, width, height, depth,
1465 format, type, bufSize, pixels, caller)) {
1469 get_texture_image(ctx, texObj, texObj->Target, level,
1470 xoffset, yoffset, zoffset, width, height, depth,
1471 format, type, pixels, caller);
1477 * Compute the number of bytes which will be written when retrieving
1478 * a sub-region of a compressed texture.
1481 packed_compressed_size(GLuint dimensions, mesa_format format,
1482 GLsizei width, GLsizei height, GLsizei depth,
1483 const struct gl_pixelstore_attrib *packing)
1485 struct compressed_pixelstore st;
1488 _mesa_compute_compressed_pixelstore(dimensions, format,
1489 width, height, depth,
1492 (st.CopySlices - 1) * st.TotalRowsPerSlice * st.TotalBytesPerRow +
1494 (st.CopyRowsPerSlice - 1) * st.TotalBytesPerRow +
1502 * Do error checking for getting compressed texture images.
1503 * \return true if any error, false if no errors.
1506 getcompressedteximage_error_check(struct gl_context *ctx,
1507 struct gl_texture_object *texObj,
1508 GLenum target, GLint level,
1509 GLint xoffset, GLint yoffset, GLint zoffset,
1510 GLsizei width, GLsizei height, GLsizei depth,
1511 GLsizei bufSize, GLvoid *pixels,
1514 struct gl_texture_image *texImage;
1521 if (texObj->Target == 0) {
1522 _mesa_error(ctx, GL_INVALID_OPERATION, "%s(invalid texture)", caller);
1526 maxLevels = _mesa_max_texture_levels(ctx, target);
1527 if (level < 0 || level >= maxLevels) {
1528 _mesa_error(ctx, GL_INVALID_VALUE,
1529 "%s(bad level = %d)", caller, level);
1533 if (dimensions_error_check(ctx, texObj, target, level,
1534 xoffset, yoffset, zoffset,
1535 width, height, depth, caller)) {
1539 texImage = select_tex_image(texObj, target, level, zoffset);
1542 if (!_mesa_is_format_compressed(texImage->TexFormat)) {
1543 _mesa_error(ctx, GL_INVALID_OPERATION,
1544 "%s(texture is not compressed)", caller);
1548 /* Check for invalid pixel storage modes */
1549 dimensions = _mesa_get_texture_dimensions(texObj->Target);
1550 if (!_mesa_compressed_pixel_storage_error_check(ctx, dimensions,
1556 /* Compute number of bytes that may be touched in the dest buffer */
1557 totalBytes = packed_compressed_size(dimensions, texImage->TexFormat,
1558 width, height, depth,
1561 /* Do dest buffer bounds checking */
1562 if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
1563 /* do bounds checking on PBO write */
1564 if ((GLubyte *) pixels + totalBytes >
1565 (GLubyte *) ctx->Pack.BufferObj->Size) {
1566 _mesa_error(ctx, GL_INVALID_OPERATION,
1567 "%s(out of bounds PBO access)", caller);
1571 /* make sure PBO is not mapped */
1572 if (_mesa_check_disallowed_mapping(ctx->Pack.BufferObj)) {
1573 _mesa_error(ctx, GL_INVALID_OPERATION, "%s(PBO is mapped)", caller);
1578 /* do bounds checking on writing to client memory */
1579 if (totalBytes > bufSize) {
1580 _mesa_error(ctx, GL_INVALID_OPERATION,
1581 "%s(out of bounds access: bufSize (%d) is too small)",
1587 if (!_mesa_is_bufferobj(ctx->Pack.BufferObj) && !pixels) {
1588 /* not an error, but do nothing */
1597 * Common helper for all glGetCompressed-teximage functions.
1600 get_compressed_texture_image(struct gl_context *ctx,
1601 struct gl_texture_object *texObj,
1602 GLenum target, GLint level,
1603 GLint xoffset, GLint yoffset, GLint zoffset,
1604 GLsizei width, GLsizei height, GLint depth,
1608 struct gl_texture_image *texImage;
1609 unsigned firstFace, numFaces, i, imageStride;
1611 FLUSH_VERTICES(ctx, 0);
1613 texImage = select_tex_image(texObj, target, level, zoffset);
1614 assert(texImage); /* should have been error checked already */
1616 if (_mesa_is_zero_size_texture(texImage))
1619 if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE)) {
1621 "%s(tex %u) format = %s, w=%d, h=%d\n",
1622 caller, texObj->Name,
1623 _mesa_get_format_name(texImage->TexFormat),
1624 texImage->Width, texImage->Height);
1627 if (target == GL_TEXTURE_CUBE_MAP) {
1628 struct compressed_pixelstore store;
1630 /* Compute image stride between cube faces */
1631 _mesa_compute_compressed_pixelstore(2, texImage->TexFormat,
1632 width, height, depth,
1633 &ctx->Pack, &store);
1634 imageStride = store.TotalBytesPerRow * store.TotalRowsPerSlice;
1636 firstFace = zoffset;
1643 firstFace = _mesa_tex_target_to_face(target);
1647 _mesa_lock_texture(ctx, texObj);
1649 for (i = 0; i < numFaces; i++) {
1650 texImage = texObj->Image[firstFace + i][level];
1653 ctx->Driver.GetCompressedTexSubImage(ctx, texImage,
1654 xoffset, yoffset, zoffset,
1655 width, height, depth, pixels);
1657 /* next cube face */
1658 pixels = (GLubyte *) pixels + imageStride;
1661 _mesa_unlock_texture(ctx, texObj);
1666 _mesa_GetnCompressedTexImageARB(GLenum target, GLint level, GLsizei bufSize,
1669 GET_CURRENT_CONTEXT(ctx);
1670 static const char *caller = "glGetnCompressedTexImageARB";
1671 GLsizei width, height, depth;
1672 struct gl_texture_object *texObj;
1674 if (!legal_getteximage_target(ctx, target, false)) {
1675 _mesa_error(ctx, GL_INVALID_ENUM, "%s", caller);
1679 texObj = _mesa_get_current_tex_object(ctx, target);
1682 get_texture_image_dims(texObj, target, level, &width, &height, &depth);
1684 if (getcompressedteximage_error_check(ctx, texObj, target, level,
1685 0, 0, 0, width, height, depth,
1686 INT_MAX, pixels, caller)) {
1690 get_compressed_texture_image(ctx, texObj, target, level,
1691 0, 0, 0, width, height, depth,
1697 _mesa_GetCompressedTexImage(GLenum target, GLint level, GLvoid *pixels)
1699 GET_CURRENT_CONTEXT(ctx);
1700 static const char *caller = "glGetCompressedTexImage";
1701 GLsizei width, height, depth;
1702 struct gl_texture_object *texObj;
1704 if (!legal_getteximage_target(ctx, target, false)) {
1705 _mesa_error(ctx, GL_INVALID_ENUM, "%s", caller);
1709 texObj = _mesa_get_current_tex_object(ctx, target);
1712 get_texture_image_dims(texObj, target, level,
1713 &width, &height, &depth);
1715 if (getcompressedteximage_error_check(ctx, texObj, target, level,
1716 0, 0, 0, width, height, depth,
1717 INT_MAX, pixels, caller)) {
1721 get_compressed_texture_image(ctx, texObj, target, level,
1722 0, 0, 0, width, height, depth,
1728 _mesa_GetCompressedTextureImage(GLuint texture, GLint level,
1729 GLsizei bufSize, GLvoid *pixels)
1731 GET_CURRENT_CONTEXT(ctx);
1732 static const char *caller = "glGetCompressedTextureImage";
1733 GLsizei width, height, depth;
1734 struct gl_texture_object *texObj =
1735 _mesa_lookup_texture_err(ctx, texture, caller);
1741 get_texture_image_dims(texObj, texObj->Target, level,
1742 &width, &height, &depth);
1744 if (getcompressedteximage_error_check(ctx, texObj, texObj->Target, level,
1745 0, 0, 0, width, height, depth,
1746 bufSize, pixels, caller)) {
1750 get_compressed_texture_image(ctx, texObj, texObj->Target, level,
1751 0, 0, 0, width, height, depth,
1757 _mesa_GetCompressedTextureSubImage(GLuint texture, GLint level,
1758 GLint xoffset, GLint yoffset,
1759 GLint zoffset, GLsizei width,
1760 GLsizei height, GLsizei depth,
1761 GLsizei bufSize, void *pixels)
1763 GET_CURRENT_CONTEXT(ctx);
1764 static const char *caller = "glGetCompressedTextureImage";
1765 struct gl_texture_object *texObj;
1767 texObj = _mesa_lookup_texture_err(ctx, texture, caller);
1772 if (getcompressedteximage_error_check(ctx, texObj, texObj->Target, level,
1773 xoffset, yoffset, zoffset,
1774 width, height, depth,
1775 bufSize, pixels, caller)) {
1779 get_compressed_texture_image(ctx, texObj, texObj->Target, level,
1780 xoffset, yoffset, zoffset,
1781 width, height, depth,