X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fmain%2Ftexgetimage.c;h=0ab9ed445d63172707c2841e2bc32a77b48701bc;hb=095515e16ca3cb2c9f1813b6602ee57ae28325a8;hp=139bc6646c5f93ef2bc945485e0cd7d4f84d16fb;hpb=96ff2edc73ccf11d4d198ba3665507f73ae4a9f7;p=mesa.git diff --git a/src/mesa/main/texgetimage.c b/src/mesa/main/texgetimage.c index 139bc6646c5..0ab9ed445d6 100644 --- a/src/mesa/main/texgetimage.c +++ b/src/mesa/main/texgetimage.c @@ -1,6 +1,5 @@ /* * Mesa 3-D graphics library - * Version: 7.7 * * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. * Copyright (c) 2009 VMware, Inc. @@ -18,9 +17,10 @@ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. */ @@ -40,11 +40,14 @@ #include "mtypes.h" #include "pack.h" #include "pbo.h" +#include "pixelstore.h" #include "texcompress.h" #include "texgetimage.h" #include "teximage.h" - - +#include "texobj.h" +#include "texstore.h" +#include "format_utils.h" +#include "pixeltransfer.h" /** * Can the given type represent negative values? @@ -72,12 +75,11 @@ type_needs_clamping(GLenum type) */ static void get_tex_depth(struct gl_context *ctx, GLuint dimensions, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, GLint depth, GLenum format, GLenum type, GLvoid *pixels, struct gl_texture_image *texImage) { - const GLint width = texImage->Width; - const GLint height = texImage->Height; - const GLint depth = texImage->Depth; GLint img, row; GLfloat *depthRow = malloc(width * sizeof(GLfloat)); @@ -91,9 +93,9 @@ get_tex_depth(struct gl_context *ctx, GLuint dimensions, GLint srcRowStride; /* map src texture buffer */ - ctx->Driver.MapTextureImage(ctx, texImage, img, - 0, 0, width, height, GL_MAP_READ_BIT, - &srcMap, &srcRowStride); + ctx->Driver.MapTextureImage(ctx, texImage, zoffset + img, + xoffset, yoffset, width, height, + GL_MAP_READ_BIT, &srcMap, &srcRowStride); if (srcMap) { for (row = 0; row < height; row++) { @@ -105,7 +107,7 @@ get_tex_depth(struct gl_context *ctx, GLuint dimensions, _mesa_pack_depth_span(ctx, width, dest, type, depthRow, &ctx->Pack); } - ctx->Driver.UnmapTextureImage(ctx, texImage, img); + ctx->Driver.UnmapTextureImage(ctx, texImage, zoffset + img); } else { _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage"); @@ -122,22 +124,25 @@ get_tex_depth(struct gl_context *ctx, GLuint dimensions, */ static void get_tex_depth_stencil(struct gl_context *ctx, GLuint dimensions, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, GLint depth, GLenum format, GLenum type, GLvoid *pixels, struct gl_texture_image *texImage) { - const GLint width = texImage->Width; - const GLint height = texImage->Height; - const GLint depth = texImage->Depth; GLint img, row; + assert(format == GL_DEPTH_STENCIL); + assert(type == GL_UNSIGNED_INT_24_8 || + type == GL_FLOAT_32_UNSIGNED_INT_24_8_REV); + for (img = 0; img < depth; img++) { GLubyte *srcMap; GLint rowstride; /* map src texture buffer */ - ctx->Driver.MapTextureImage(ctx, texImage, img, - 0, 0, width, height, GL_MAP_READ_BIT, - &srcMap, &rowstride); + ctx->Driver.MapTextureImage(ctx, texImage, zoffset + img, + xoffset, yoffset, width, height, + GL_MAP_READ_BIT, &srcMap, &rowstride); if (srcMap) { for (row = 0; row < height; row++) { @@ -145,14 +150,61 @@ get_tex_depth_stencil(struct gl_context *ctx, GLuint dimensions, void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels, width, height, format, type, img, row, 0); - /* XXX Z24_S8 vs. S8_Z24??? */ - memcpy(dest, src, width * sizeof(GLuint)); + _mesa_unpack_depth_stencil_row(texImage->TexFormat, + width, + (const GLuint *) src, + type, dest); if (ctx->Pack.SwapBytes) { _mesa_swap4((GLuint *) dest, width); } } - ctx->Driver.UnmapTextureImage(ctx, texImage, img); + ctx->Driver.UnmapTextureImage(ctx, texImage, zoffset + img); + } + else { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage"); + break; + } + } +} + +/** + * glGetTexImage for stencil pixels. + */ +static void +get_tex_stencil(struct gl_context *ctx, GLuint dimensions, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, GLint depth, + GLenum format, GLenum type, GLvoid *pixels, + struct gl_texture_image *texImage) +{ + GLint img, row; + + assert(format == GL_STENCIL_INDEX); + + for (img = 0; img < depth; img++) { + GLubyte *srcMap; + GLint rowstride; + + /* map src texture buffer */ + ctx->Driver.MapTextureImage(ctx, texImage, zoffset + img, + xoffset, yoffset, width, height, + GL_MAP_READ_BIT, + &srcMap, &rowstride); + + if (srcMap) { + for (row = 0; row < height; row++) { + const GLubyte *src = srcMap + row * rowstride; + void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels, + width, height, format, type, + img, row, 0); + _mesa_unpack_ubyte_stencil_row(texImage->TexFormat, + width, + (const GLuint *) src, + dest); + } + + ctx->Driver.UnmapTextureImage(ctx, texImage, zoffset + img); } else { _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage"); @@ -167,12 +219,11 @@ get_tex_depth_stencil(struct gl_context *ctx, GLuint dimensions, */ static void get_tex_ycbcr(struct gl_context *ctx, GLuint dimensions, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, GLint depth, GLenum format, GLenum type, GLvoid *pixels, struct gl_texture_image *texImage) { - const GLint width = texImage->Width; - const GLint height = texImage->Height; - const GLint depth = texImage->Depth; GLint img, row; for (img = 0; img < depth; img++) { @@ -180,9 +231,9 @@ get_tex_ycbcr(struct gl_context *ctx, GLuint dimensions, GLint rowstride; /* map src texture buffer */ - ctx->Driver.MapTextureImage(ctx, texImage, img, - 0, 0, width, height, GL_MAP_READ_BIT, - &srcMap, &rowstride); + ctx->Driver.MapTextureImage(ctx, texImage, zoffset + img, + xoffset, yoffset, width, height, + GL_MAP_READ_BIT, &srcMap, &rowstride); if (srcMap) { for (row = 0; row < height; row++) { @@ -205,7 +256,7 @@ get_tex_ycbcr(struct gl_context *ctx, GLuint dimensions, } } - ctx->Driver.UnmapTextureImage(ctx, texImage, img); + ctx->Driver.UnmapTextureImage(ctx, texImage, zoffset + img); } else { _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage"); @@ -214,50 +265,86 @@ get_tex_ycbcr(struct gl_context *ctx, GLuint dimensions, } } +/** + * Depending on the base format involved we may need to apply a rebase + * transform (for example: if we download to a Luminance format we want + * G=0 and B=0). + */ +static bool +teximage_needs_rebase(mesa_format texFormat, GLenum baseFormat, + bool is_compressed, uint8_t *rebaseSwizzle) +{ + bool needsRebase = false; + + if (baseFormat == GL_LUMINANCE || + baseFormat == GL_INTENSITY) { + needsRebase = true; + rebaseSwizzle[0] = MESA_FORMAT_SWIZZLE_X; + rebaseSwizzle[1] = MESA_FORMAT_SWIZZLE_ZERO; + rebaseSwizzle[2] = MESA_FORMAT_SWIZZLE_ZERO; + rebaseSwizzle[3] = MESA_FORMAT_SWIZZLE_ONE; + } else if (baseFormat == GL_LUMINANCE_ALPHA) { + needsRebase = true; + rebaseSwizzle[0] = MESA_FORMAT_SWIZZLE_X; + rebaseSwizzle[1] = MESA_FORMAT_SWIZZLE_ZERO; + rebaseSwizzle[2] = MESA_FORMAT_SWIZZLE_ZERO; + rebaseSwizzle[3] = MESA_FORMAT_SWIZZLE_W; + } else if (!is_compressed && + (baseFormat != _mesa_get_format_base_format(texFormat))) { + needsRebase = + _mesa_compute_rgba2base2rgba_component_mapping(baseFormat, + rebaseSwizzle); + } + + return needsRebase; +} + /** * Get a color texture image with decompression. */ static void get_tex_rgba_compressed(struct gl_context *ctx, GLuint dimensions, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, GLint depth, GLenum format, GLenum type, GLvoid *pixels, struct gl_texture_image *texImage, GLbitfield transferOps) { /* don't want to apply sRGB -> RGB conversion here so override the format */ - const gl_format texFormat = + const mesa_format texFormat = _mesa_get_srgb_format_linear(texImage->TexFormat); const GLenum baseFormat = _mesa_get_format_base_format(texFormat); - const GLenum destBaseFormat = _mesa_base_tex_format(ctx, format); - GLenum rebaseFormat = GL_NONE; - const GLuint width = texImage->Width; - const GLuint height = texImage->Height; - const GLuint depth = texImage->Depth; - GLfloat *tempImage, *srcRow; - GLuint row; + GLfloat *tempImage, *tempSlice; + GLuint slice; + int srcStride, dstStride; + uint32_t dstFormat; + bool needsRebase; + uint8_t rebaseSwizzle[4]; /* Decompress into temp float buffer, then pack into user buffer */ - tempImage = malloc(width * height * depth - * 4 * sizeof(GLfloat)); + tempImage = malloc(width * height * depth * 4 * sizeof(GLfloat)); if (!tempImage) { _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage()"); return; } - /* Decompress the texture image - results in 'tempImage' */ - { + /* Decompress the texture image slices - results in 'tempImage' */ + for (slice = 0; slice < depth; slice++) { GLubyte *srcMap; GLint srcRowStride; - ctx->Driver.MapTextureImage(ctx, texImage, 0, - 0, 0, width, height, + tempSlice = tempImage + slice * 4 * width * height; + + ctx->Driver.MapTextureImage(ctx, texImage, zoffset + slice, + xoffset, yoffset, width, height, GL_MAP_READ_BIT, &srcMap, &srcRowStride); if (srcMap) { _mesa_decompress_image(texFormat, width, height, - srcMap, srcRowStride, tempImage); + srcMap, srcRowStride, tempSlice); - ctx->Driver.UnmapTextureImage(ctx, texImage, 0); + ctx->Driver.UnmapTextureImage(ctx, texImage, zoffset + slice); } else { _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage"); @@ -266,43 +353,29 @@ get_tex_rgba_compressed(struct gl_context *ctx, GLuint dimensions, } } - if (baseFormat == GL_LUMINANCE || - baseFormat == GL_INTENSITY || - baseFormat == GL_LUMINANCE_ALPHA) { - /* If a luminance (or intensity) texture is read back as RGB(A), the - * returned value should be (L,0,0,1), not (L,L,L,1). Set rebaseFormat - * here to get G=B=0. - */ - rebaseFormat = texImage->_BaseFormat; - } - else if ((baseFormat == GL_RGBA || - baseFormat == GL_RGB || - baseFormat == GL_RG) && - (destBaseFormat == GL_LUMINANCE || - destBaseFormat == GL_LUMINANCE_ALPHA || - destBaseFormat == GL_LUMINANCE_INTEGER_EXT || - destBaseFormat == GL_LUMINANCE_ALPHA_INTEGER_EXT)) { - /* If we're reading back an RGB(A) texture as luminance then we need - * to return L=tex(R). Note, that's different from glReadPixels which - * returns L=R+G+B. - */ - rebaseFormat = GL_LUMINANCE_ALPHA; /* this covers GL_LUMINANCE too */ - } + needsRebase = teximage_needs_rebase(texFormat, baseFormat, true, + rebaseSwizzle); - if (rebaseFormat) { - _mesa_rebase_rgba_float(width * height, (GLfloat (*)[4]) tempImage, - rebaseFormat); - } - - srcRow = tempImage; - for (row = 0; row < height; row++) { + srcStride = 4 * width * sizeof(GLfloat); + dstStride = _mesa_image_row_stride(&ctx->Pack, width, format, type); + dstFormat = _mesa_format_from_format_and_type(format, type); + tempSlice = tempImage; + for (slice = 0; slice < depth; slice++) { void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels, width, height, format, type, - 0, row, 0); + slice, 0, 0); + _mesa_format_convert(dest, dstFormat, dstStride, + tempSlice, RGBA32_FLOAT, srcStride, + width, height, + needsRebase ? rebaseSwizzle : NULL); + + /* Handle byte swapping if required */ + if (ctx->Pack.SwapBytes) { + _mesa_swap_bytes_2d_image(format, type, &ctx->Pack, + width, height, dest, dest); + } - _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) srcRow, - format, type, dest, &ctx->Pack, transferOps); - srcRow += width * 4; + tempSlice += 4 * width * height; } free(tempImage); @@ -313,7 +386,7 @@ get_tex_rgba_compressed(struct gl_context *ctx, GLuint dimensions, * Return a base GL format given the user-requested format * for glGetTexImage(). */ -static GLenum +GLenum _mesa_base_pack_format(GLenum format) { switch (format) { @@ -349,152 +422,136 @@ _mesa_base_pack_format(GLenum format) */ static void get_tex_rgba_uncompressed(struct gl_context *ctx, GLuint dimensions, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, GLint depth, GLenum format, GLenum type, GLvoid *pixels, struct gl_texture_image *texImage, GLbitfield transferOps) { /* don't want to apply sRGB -> RGB conversion here so override the format */ - const gl_format texFormat = + const mesa_format texFormat = _mesa_get_srgb_format_linear(texImage->TexFormat); - const GLuint width = texImage->Width; - GLenum destBaseFormat = _mesa_base_pack_format(format); - GLenum rebaseFormat = GL_NONE; - GLuint height = texImage->Height; - GLuint depth = texImage->Depth; - GLuint img, row; - GLfloat (*rgba)[4]; - GLuint (*rgba_uint)[4]; - GLboolean tex_is_integer = _mesa_is_format_integer_color(texImage->TexFormat); - GLboolean tex_is_uint = _mesa_is_format_unsigned(texImage->TexFormat); - GLenum texBaseFormat = _mesa_get_format_base_format(texImage->TexFormat); - - /* Allocate buffer for one row of texels */ - rgba = malloc(4 * width * sizeof(GLfloat)); - rgba_uint = (GLuint (*)[4]) rgba; - if (!rgba) { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage()"); - return; - } - - if (texImage->TexObject->Target == GL_TEXTURE_1D_ARRAY) { - depth = height; - height = 1; - } - - if (texImage->_BaseFormat == GL_LUMINANCE || - texImage->_BaseFormat == GL_INTENSITY || - texImage->_BaseFormat == GL_LUMINANCE_ALPHA) { - /* If a luminance (or intensity) texture is read back as RGB(A), the - * returned value should be (L,0,0,1), not (L,L,L,1). Set rebaseFormat - * here to get G=B=0. - */ - rebaseFormat = texImage->_BaseFormat; - } - else if ((texImage->_BaseFormat == GL_RGBA || - texImage->_BaseFormat == GL_RGB || - texImage->_BaseFormat == GL_RG) && - (destBaseFormat == GL_LUMINANCE || - destBaseFormat == GL_LUMINANCE_ALPHA || - destBaseFormat == GL_LUMINANCE_INTEGER_EXT || - destBaseFormat == GL_LUMINANCE_ALPHA_INTEGER_EXT)) { - /* If we're reading back an RGB(A) texture as luminance then we need - * to return L=tex(R). Note, that's different from glReadPixels which - * returns L=R+G+B. - */ - rebaseFormat = GL_LUMINANCE_ALPHA; /* this covers GL_LUMINANCE too */ - } - else if (texImage->_BaseFormat != texBaseFormat) { - /* The internal format and the real format differ, so we can't rely - * on the unpack functions setting the correct constant values. - * (e.g. reading back GL_RGB8 which is actually RGBA won't set alpha=1) - */ - switch (texImage->_BaseFormat) { - case GL_RED: - if ((texBaseFormat == GL_RGBA || - texBaseFormat == GL_RGB || - texBaseFormat == GL_RG) && - (destBaseFormat == GL_RGBA || - destBaseFormat == GL_RGB || - destBaseFormat == GL_RG || - destBaseFormat == GL_GREEN)) { - rebaseFormat = texImage->_BaseFormat; - break; - } - /* fall through */ - case GL_RG: - if ((texBaseFormat == GL_RGBA || - texBaseFormat == GL_RGB) && - (destBaseFormat == GL_RGBA || - destBaseFormat == GL_RGB || - destBaseFormat == GL_BLUE)) { - rebaseFormat = texImage->_BaseFormat; - break; - } - /* fall through */ - case GL_RGB: - if (texBaseFormat == GL_RGBA && - (destBaseFormat == GL_RGBA || - destBaseFormat == GL_ALPHA || - destBaseFormat == GL_LUMINANCE_ALPHA)) { - rebaseFormat = texImage->_BaseFormat; - } - break; - - case GL_ALPHA: - if (destBaseFormat != GL_ALPHA) { - rebaseFormat = texImage->_BaseFormat; - } - break; - } - } + GLuint img; + GLboolean dst_is_integer; + uint32_t dst_format; + int dst_stride; + uint8_t rebaseSwizzle[4]; + bool needsRebase; + void *rgba = NULL; + + needsRebase = teximage_needs_rebase(texFormat, texImage->_BaseFormat, false, + rebaseSwizzle); + + /* Describe the dst format */ + dst_is_integer = _mesa_is_enum_format_integer(format); + dst_format = _mesa_format_from_format_and_type(format, type); + dst_stride = _mesa_image_row_stride(&ctx->Pack, width, format, type); + + /* Since _mesa_format_convert does not handle transferOps we need to handle + * them before we call the function. This requires to convert to RGBA float + * first so we can call _mesa_apply_rgba_transfer_ops. If the dst format is + * integer then transferOps do not apply. + */ + assert(!transferOps || (transferOps && !dst_is_integer)); + (void) dst_is_integer; /* silence unused var warning */ for (img = 0; img < depth; img++) { GLubyte *srcMap; GLint rowstride; + GLubyte *img_src; + void *dest; + void *src; + int src_stride; + uint32_t src_format; /* map src texture buffer */ - ctx->Driver.MapTextureImage(ctx, texImage, img, - 0, 0, width, height, GL_MAP_READ_BIT, + ctx->Driver.MapTextureImage(ctx, texImage, zoffset + img, + xoffset, yoffset, width, height, + GL_MAP_READ_BIT, &srcMap, &rowstride); - if (srcMap) { - for (row = 0; row < height; row++) { - const GLubyte *src = srcMap + row * rowstride; - void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels, - width, height, format, type, - img, row, 0); + if (!srcMap) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage"); + goto done; + } - if (tex_is_integer) { - _mesa_unpack_uint_rgba_row(texFormat, width, src, rgba_uint); - if (rebaseFormat) - _mesa_rebase_rgba_uint(width, rgba_uint, rebaseFormat); - if (tex_is_uint) { - _mesa_pack_rgba_span_from_uints(ctx, width, - (GLuint (*)[4]) rgba_uint, - format, type, dest); - } else { - _mesa_pack_rgba_span_from_ints(ctx, width, - (GLint (*)[4]) rgba_uint, - format, type, dest); + img_src = srcMap; + dest = _mesa_image_address(dimensions, &ctx->Pack, pixels, + width, height, format, type, + img, 0, 0); + + if (transferOps) { + uint32_t rgba_format; + int rgba_stride; + bool need_convert = false; + + /* We will convert to RGBA float */ + rgba_format = RGBA32_FLOAT; + rgba_stride = width * 4 * sizeof(GLfloat); + + /* If we are lucky and the dst format matches the RGBA format we need + * to convert to, then we can convert directly into the dst buffer + * and avoid the final conversion/copy from the rgba buffer to the dst + * buffer. + */ + if (format == rgba_format) { + rgba = dest; + } else { + need_convert = true; + if (rgba == NULL) { /* Allocate the RGBA buffer only once */ + rgba = malloc(height * rgba_stride); + if (!rgba) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage()"); + ctx->Driver.UnmapTextureImage(ctx, texImage, img); + return; } - } else { - _mesa_unpack_rgba_row(texFormat, width, src, rgba); - if (rebaseFormat) - _mesa_rebase_rgba_float(width, rgba, rebaseFormat); - _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba, - format, type, dest, - &ctx->Pack, transferOps); - } - } - - /* Unmap the src texture buffer */ - ctx->Driver.UnmapTextureImage(ctx, texImage, img); - } - else { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage"); - break; + } + } + + _mesa_format_convert(rgba, rgba_format, rgba_stride, + img_src, texFormat, rowstride, + width, height, + needsRebase ? rebaseSwizzle : NULL); + + /* Handle transfer ops now */ + _mesa_apply_rgba_transfer_ops(ctx, transferOps, width * height, rgba); + + /* If we had to rebase, we have already handled that */ + needsRebase = false; + + /* If we were lucky and our RGBA conversion matches the dst format, + * then we are done. + */ + if (!need_convert) + goto do_swap; + + /* Otherwise, we need to convert from RGBA to dst next */ + src = rgba; + src_format = rgba_format; + src_stride = rgba_stride; + } else { + /* No RGBA conversion needed, convert directly to dst */ + src = img_src; + src_format = texFormat; + src_stride = rowstride; } + + /* Do the conversion to destination format */ + _mesa_format_convert(dest, dst_format, dst_stride, + src, src_format, src_stride, + width, height, + needsRebase ? rebaseSwizzle : NULL); + + do_swap: + /* Handle byte swapping if required */ + if (ctx->Pack.SwapBytes) + _mesa_swap_bytes_2d_image(format, type, &ctx->Pack, + width, height, dest, dest); + + /* Unmap the src texture buffer */ + ctx->Driver.UnmapTextureImage(ctx, texImage, zoffset + img); } +done: free(rgba); } @@ -505,6 +562,8 @@ get_tex_rgba_uncompressed(struct gl_context *ctx, GLuint dimensions, */ static void get_tex_rgba(struct gl_context *ctx, GLuint dimensions, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, GLint depth, GLenum format, GLenum type, GLvoid *pixels, struct gl_texture_image *texImage) { @@ -526,11 +585,17 @@ get_tex_rgba(struct gl_context *ctx, GLuint dimensions, } if (_mesa_is_format_compressed(texImage->TexFormat)) { - get_tex_rgba_compressed(ctx, dimensions, format, type, + get_tex_rgba_compressed(ctx, dimensions, + xoffset, yoffset, zoffset, + width, height, depth, + format, type, pixels, texImage, transferOps); } else { - get_tex_rgba_uncompressed(ctx, dimensions, format, type, + get_tex_rgba_uncompressed(ctx, dimensions, + xoffset, yoffset, zoffset, + width, height, depth, + format, type, pixels, texImage, transferOps); } } @@ -541,8 +606,10 @@ get_tex_rgba(struct gl_context *ctx, GLuint dimensions, * \return GL_TRUE if done, GL_FALSE otherwise */ static GLboolean -get_tex_memcpy(struct gl_context *ctx, GLenum format, GLenum type, - GLvoid *pixels, +get_tex_memcpy(struct gl_context *ctx, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, GLint depth, + GLenum format, GLenum type, GLvoid *pixels, struct gl_texture_image *texImage) { const GLenum target = texImage->TexObject->Target; @@ -561,32 +628,37 @@ get_tex_memcpy(struct gl_context *ctx, GLenum format, GLenum type, texBaseFormat == texImage->_BaseFormat) { memCopy = _mesa_format_matches_format_and_type(texImage->TexFormat, format, type, - ctx->Pack.SwapBytes); + ctx->Pack.SwapBytes, NULL); + } + + if (depth > 1) { + /* only a single slice is supported at this time */ + memCopy = FALSE; } if (memCopy) { const GLuint bpp = _mesa_get_format_bytes(texImage->TexFormat); - const GLuint bytesPerRow = texImage->Width * bpp; + const GLint bytesPerRow = width * bpp; GLubyte *dst = - _mesa_image_address2d(&ctx->Pack, pixels, texImage->Width, - texImage->Height, format, type, 0, 0); + _mesa_image_address2d(&ctx->Pack, pixels, width, height, + format, type, 0, 0); const GLint dstRowStride = - _mesa_image_row_stride(&ctx->Pack, texImage->Width, format, type); + _mesa_image_row_stride(&ctx->Pack, width, format, type); GLubyte *src; GLint srcRowStride; /* map src texture buffer */ - ctx->Driver.MapTextureImage(ctx, texImage, 0, - 0, 0, texImage->Width, texImage->Height, + ctx->Driver.MapTextureImage(ctx, texImage, zoffset, + xoffset, yoffset, width, height, GL_MAP_READ_BIT, &src, &srcRowStride); if (src) { if (bytesPerRow == dstRowStride && bytesPerRow == srcRowStride) { - memcpy(dst, src, bytesPerRow * texImage->Height); + memcpy(dst, src, bytesPerRow * height); } else { GLuint row; - for (row = 0; row < texImage->Height; row++) { + for (row = 0; row < height; row++) { memcpy(dst, src, bytesPerRow); dst += dstRowStride; src += srcRowStride; @@ -594,7 +666,7 @@ get_tex_memcpy(struct gl_context *ctx, GLenum format, GLenum type, } /* unmap src texture buffer */ - ctx->Driver.UnmapTextureImage(ctx, texImage, 0); + ctx->Driver.UnmapTextureImage(ctx, texImage, zoffset); } else { _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage"); @@ -606,28 +678,20 @@ get_tex_memcpy(struct gl_context *ctx, GLenum format, GLenum type, /** - * This is the software fallback for Driver.GetTexImage(). + * This is the software fallback for Driver.GetTexSubImage(). * All error checking will have been done before this routine is called. * We'll call ctx->Driver.MapTextureImage() to access the data, then * unmap with ctx->Driver.UnmapTextureImage(). */ void -_mesa_get_teximage(struct gl_context *ctx, - GLenum format, GLenum type, GLvoid *pixels, - struct gl_texture_image *texImage) +_mesa_GetTexSubImage_sw(struct gl_context *ctx, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, GLint depth, + GLenum format, GLenum type, GLvoid *pixels, + struct gl_texture_image *texImage) { - GLuint dimensions; - - switch (texImage->TexObject->Target) { - case GL_TEXTURE_1D: - dimensions = 1; - break; - case GL_TEXTURE_3D: - dimensions = 3; - break; - default: - dimensions = 2; - } + const GLuint dimensions = + _mesa_get_texture_dimensions(texImage->TexObject->Target); /* map dest buffer, if PBO */ if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { @@ -639,7 +703,8 @@ _mesa_get_teximage(struct gl_context *ctx, */ GLubyte *buf = (GLubyte *) ctx->Driver.MapBufferRange(ctx, 0, ctx->Pack.BufferObj->Size, - GL_MAP_WRITE_BIT, ctx->Pack.BufferObj); + GL_MAP_WRITE_BIT, ctx->Pack.BufferObj, + MAP_INTERNAL); if (!buf) { /* out of memory or other unexpected error */ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage(map PBO failed)"); @@ -651,122 +716,161 @@ _mesa_get_teximage(struct gl_context *ctx, pixels = ADD_POINTERS(buf, pixels); } - if (get_tex_memcpy(ctx, format, type, pixels, texImage)) { + /* for all array textures, the Z axis selects the layer */ + if (texImage->TexObject->Target == GL_TEXTURE_1D_ARRAY) { + depth = height; + height = 1; + zoffset = yoffset; + yoffset = 0; + assert(zoffset + depth <= texImage->Height); + } else { + assert(zoffset + depth <= texImage->Depth); + } + + if (get_tex_memcpy(ctx, xoffset, yoffset, zoffset, width, height, depth, + format, type, pixels, texImage)) { /* all done */ } else if (format == GL_DEPTH_COMPONENT) { - get_tex_depth(ctx, dimensions, format, type, pixels, texImage); + get_tex_depth(ctx, dimensions, xoffset, yoffset, zoffset, + width, height, depth, format, type, pixels, texImage); } else if (format == GL_DEPTH_STENCIL_EXT) { - get_tex_depth_stencil(ctx, dimensions, format, type, pixels, texImage); + get_tex_depth_stencil(ctx, dimensions, xoffset, yoffset, zoffset, + width, height, depth, format, type, pixels, + texImage); + } + else if (format == GL_STENCIL_INDEX) { + get_tex_stencil(ctx, dimensions, xoffset, yoffset, zoffset, + width, height, depth, format, type, pixels, texImage); } else if (format == GL_YCBCR_MESA) { - get_tex_ycbcr(ctx, dimensions, format, type, pixels, texImage); + get_tex_ycbcr(ctx, dimensions, xoffset, yoffset, zoffset, + width, height, depth, format, type, pixels, texImage); } else { - get_tex_rgba(ctx, dimensions, format, type, pixels, texImage); + get_tex_rgba(ctx, dimensions, xoffset, yoffset, zoffset, + width, height, depth, format, type, pixels, texImage); } if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { - ctx->Driver.UnmapBuffer(ctx, ctx->Pack.BufferObj); + ctx->Driver.UnmapBuffer(ctx, ctx->Pack.BufferObj, MAP_INTERNAL); } } /** - * This is the software fallback for Driver.GetCompressedTexImage(). - * All error checking will have been done before this routine is called. + * This function assumes that all error checking has been done. */ -void -_mesa_get_compressed_teximage(struct gl_context *ctx, +static void +get_compressed_texsubimage_sw(struct gl_context *ctx, struct gl_texture_image *texImage, + GLint xoffset, GLint yoffset, + GLint zoffset, GLsizei width, + GLint height, GLint depth, GLvoid *img) { - const GLuint row_stride = - _mesa_format_row_stride(texImage->TexFormat, texImage->Width); - GLuint i; - GLubyte *src; - GLint srcRowStride; + const GLuint dimensions = + _mesa_get_texture_dimensions(texImage->TexObject->Target); + struct compressed_pixelstore store; + GLint slice; + GLubyte *dest; + + _mesa_compute_compressed_pixelstore(dimensions, texImage->TexFormat, + width, height, depth, + &ctx->Pack, &store); if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { /* pack texture image into a PBO */ - GLubyte *buf = (GLubyte *) + dest = (GLubyte *) ctx->Driver.MapBufferRange(ctx, 0, ctx->Pack.BufferObj->Size, - GL_MAP_WRITE_BIT, ctx->Pack.BufferObj); - if (!buf) { + GL_MAP_WRITE_BIT, ctx->Pack.BufferObj, + MAP_INTERNAL); + if (!dest) { /* out of memory or other unexpected error */ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetCompresssedTexImage(map PBO failed)"); return; } - img = ADD_POINTERS(buf, img); + dest = ADD_POINTERS(dest, img); + } else { + dest = img; } - /* map src texture buffer */ - ctx->Driver.MapTextureImage(ctx, texImage, 0, - 0, 0, texImage->Width, texImage->Height, - GL_MAP_READ_BIT, &src, &srcRowStride); + dest += store.SkipBytes; - if (src) { - /* no pixelstore or pixel transfer, but respect stride */ + for (slice = 0; slice < store.CopySlices; slice++) { + GLint srcRowStride; + GLubyte *src; - if (row_stride == srcRowStride) { - const GLuint size = _mesa_format_image_size(texImage->TexFormat, - texImage->Width, - texImage->Height, - texImage->Depth); - memcpy(img, src, size); - } - else { - GLuint bw, bh; - _mesa_get_format_block_size(texImage->TexFormat, &bw, &bh); - for (i = 0; i < (texImage->Height + bh - 1) / bh; i++) { - memcpy((GLubyte *)img + i * row_stride, - (GLubyte *)src + i * srcRowStride, - row_stride); + /* map src texture buffer */ + ctx->Driver.MapTextureImage(ctx, texImage, zoffset + slice, + xoffset, yoffset, width, height, + GL_MAP_READ_BIT, &src, &srcRowStride); + + if (src) { + GLint i; + for (i = 0; i < store.CopyRowsPerSlice; i++) { + memcpy(dest, src, store.CopyBytesPerRow); + dest += store.TotalBytesPerRow; + src += srcRowStride; } - } - ctx->Driver.UnmapTextureImage(ctx, texImage, 0); - } - else { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetCompresssedTexImage"); + ctx->Driver.UnmapTextureImage(ctx, texImage, zoffset + slice); + + /* Advance to next slice */ + dest += store.TotalBytesPerRow * (store.TotalRowsPerSlice - + store.CopyRowsPerSlice); + + } else { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetCompresssedTexImage"); + } } if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { - ctx->Driver.UnmapBuffer(ctx, ctx->Pack.BufferObj); + ctx->Driver.UnmapBuffer(ctx, ctx->Pack.BufferObj, MAP_INTERNAL); } } /** - * Validate the texture target enum supplied to glTexImage or - * glCompressedTexImage. + * Validate the texture target enum supplied to glGetTex(ture)Image or + * glGetCompressedTex(ture)Image. */ static GLboolean -legal_getteximage_target(struct gl_context *ctx, GLenum target) +legal_getteximage_target(struct gl_context *ctx, GLenum target, bool dsa) { switch (target) { case GL_TEXTURE_1D: case GL_TEXTURE_2D: case GL_TEXTURE_3D: return GL_TRUE; - case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: - case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: - case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: - case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: - case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: - case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: - return ctx->Extensions.ARB_texture_cube_map; case GL_TEXTURE_RECTANGLE_NV: return ctx->Extensions.NV_texture_rectangle; case GL_TEXTURE_1D_ARRAY_EXT: case GL_TEXTURE_2D_ARRAY_EXT: - return (ctx->Extensions.MESA_texture_array || - ctx->Extensions.EXT_texture_array); + return ctx->Extensions.EXT_texture_array; case GL_TEXTURE_CUBE_MAP_ARRAY: return ctx->Extensions.ARB_texture_cube_map_array; + + /* Section 8.11 (Texture Queries) of the OpenGL 4.5 core profile spec + * (30.10.2014) says: + * "An INVALID_ENUM error is generated if the effective target is not + * one of TEXTURE_1D, TEXTURE_2D, TEXTURE_3D, TEXTURE_1D_ARRAY, + * TEXTURE_2D_ARRAY, TEXTURE_CUBE_MAP_ARRAY, TEXTURE_RECTANGLE, one of + * the targets from table 8.19 (for GetTexImage and GetnTexImage *only*), + * or TEXTURE_CUBE_MAP (for GetTextureImage *only*)." (Emphasis added.) + */ + case GL_TEXTURE_CUBE_MAP_POSITIVE_X: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: + return dsa ? GL_FALSE : ctx->Extensions.ARB_texture_cube_map; + case GL_TEXTURE_CUBE_MAP: + return dsa ? GL_TRUE : GL_FALSE; default: return GL_FALSE; } @@ -774,294 +878,943 @@ legal_getteximage_target(struct gl_context *ctx, GLenum target) /** - * Do error checking for a glGetTexImage() call. - * \return GL_TRUE if any error, GL_FALSE if no errors. + * Wrapper for _mesa_select_tex_image() which can handle target being + * GL_TEXTURE_CUBE_MAP in which case we use zoffset to select a cube face. + * This can happen for glGetTextureImage and glGetTextureSubImage (DSA + * functions). */ -static GLboolean -getteximage_error_check(struct gl_context *ctx, GLenum target, GLint level, - GLenum format, GLenum type, GLsizei clientMemSize, - GLvoid *pixels ) +static struct gl_texture_image * +select_tex_image(const struct gl_texture_object *texObj, GLenum target, + GLint level, GLint zoffset) +{ + assert(level >= 0); + assert(level < MAX_TEXTURE_LEVELS); + if (target == GL_TEXTURE_CUBE_MAP) { + assert(zoffset >= 0); + assert(zoffset < 6); + target = GL_TEXTURE_CUBE_MAP_POSITIVE_X + zoffset; + } + return _mesa_select_tex_image(texObj, target, level); +} + + +/** + * Error-check the offset and size arguments to + * glGet[Compressed]TextureSubImage(). Also checks if the specified + * texture image is missing. + * \return true if error, false if no error. + */ +static bool +dimensions_error_check(struct gl_context *ctx, + struct gl_texture_object *texObj, + GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, GLsizei depth, + const char *caller) +{ + const struct gl_texture_image *texImage; + + if (xoffset < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, "%s(xoffset = %d)", caller, xoffset); + return true; + } + + if (yoffset < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, "%s(yoffset = %d)", caller, yoffset); + return true; + } + + if (zoffset < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, "%s(zoffset = %d)", caller, zoffset); + return true; + } + + if (width < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, "%s(width = %d)", caller, width); + return true; + } + + if (height < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, "%s(height = %d)", caller, height); + return true; + } + + if (depth < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, "%s(depth = %d)", caller, depth); + return true; + } + + /* do special per-target checks */ + switch (target) { + case GL_TEXTURE_1D: + if (yoffset != 0) { + _mesa_error(ctx, GL_INVALID_VALUE, + "%s(1D, yoffset = %d)", caller, yoffset); + return true; + } + if (height != 1) { + _mesa_error(ctx, GL_INVALID_VALUE, + "%s(1D, height = %d)", caller, height); + return true; + } + /* fall-through */ + case GL_TEXTURE_1D_ARRAY: + case GL_TEXTURE_2D: + case GL_TEXTURE_RECTANGLE: + if (zoffset != 0) { + _mesa_error(ctx, GL_INVALID_VALUE, + "%s(zoffset = %d)", caller, zoffset); + return true; + } + if (depth != 1) { + _mesa_error(ctx, GL_INVALID_VALUE, + "%s(depth = %d)", caller, depth); + return true; + } + break; + case GL_TEXTURE_CUBE_MAP: + /* Non-array cube maps are special because we have a gl_texture_image + * per face. + */ + if (zoffset + depth > 6) { + _mesa_error(ctx, GL_INVALID_VALUE, + "%s(zoffset + depth = %d)", caller, zoffset + depth); + return true; + } + /* According to OpenGL 4.6 spec, section 8.11.4 ("Texture Image Queries"): + * + * "An INVALID_OPERATION error is generated by GetTextureImage if the + * effective target is TEXTURE_CUBE_MAP or TEXTURE_CUBE_MAP_ARRAY , + * and the texture object is not cube complete or cube array complete, + * respectively." + * + * This applies also to GetTextureSubImage, GetCompressedTexImage, + * GetCompressedTextureImage, and GetnCompressedTexImage. + */ + if (!_mesa_cube_complete(texObj)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(cube incomplete)", caller); + return true; + } + break; + default: + ; /* nothing */ + } + + texImage = select_tex_image(texObj, target, level, zoffset); + if (!texImage) { + /* Trying to return a non-defined level is a valid operation per se, as + * OpenGL 4.6 spec, section 8.11.4 ("Texture Image Queries") does not + * handle this case as an error. + * + * Rather, we need to look at section 8.22 ("Texture State and Proxy + * State"): + * + * "Each initial texture image is null. It has zero width, height, and + * depth, internal format RGBA, or R8 for buffer textures, component + * sizes set to zero and component types set to NONE, the compressed + * flag set to FALSE, a zero compressed size, and the bound buffer + * object name is zero." + * + * This means we need to assume the image for the non-defined level is + * an empty image. With this assumption, we can go back to section + * 8.11.4 and checking again the errors: + * + * "An INVALID_VALUE error is generated if xoffset + width is greater + * than the texture’s width, yoffset + height is greater than the + * texture’s height, or zoffset + depth is greater than the texture’s + * depth." + * + * Thus why we return INVALID_VALUE. + */ + _mesa_error(ctx, GL_INVALID_VALUE, "%s(missing image)", caller); + return true; + } + + if (xoffset + width > texImage->Width) { + _mesa_error(ctx, GL_INVALID_VALUE, + "%s(xoffset %d + width %d > %u)", + caller, xoffset, width, texImage->Width); + return true; + } + + if (yoffset + height > texImage->Height) { + _mesa_error(ctx, GL_INVALID_VALUE, + "%s(yoffset %d + height %d > %u)", + caller, yoffset, height, texImage->Height); + return true; + } + + if (target != GL_TEXTURE_CUBE_MAP) { + /* Cube map error checking was done above */ + if (zoffset + depth > texImage->Depth) { + _mesa_error(ctx, GL_INVALID_VALUE, + "%s(zoffset %d + depth %d > %u)", + caller, zoffset, depth, texImage->Depth); + return true; + } + } + + /* Extra checks for compressed textures */ + { + GLuint bw, bh, bd; + _mesa_get_format_block_size_3d(texImage->TexFormat, &bw, &bh, &bd); + if (bw > 1 || bh > 1 || bd > 1) { + /* offset must be multiple of block size */ + if (xoffset % bw != 0) { + _mesa_error(ctx, GL_INVALID_VALUE, + "%s(xoffset = %d)", caller, xoffset); + return true; + } + if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY) { + if (yoffset % bh != 0) { + _mesa_error(ctx, GL_INVALID_VALUE, + "%s(yoffset = %d)", caller, yoffset); + return true; + } + } + + if (zoffset % bd != 0) { + _mesa_error(ctx, GL_INVALID_VALUE, + "%s(zoffset = %d)", caller, zoffset); + return true; + } + + /* The size must be a multiple of bw x bh x bd, or we must be using a + * offset+size that exactly hits the edge of the image. + */ + if ((width % bw != 0) && + (xoffset + width != (GLint) texImage->Width)) { + _mesa_error(ctx, GL_INVALID_VALUE, + "%s(width = %d)", caller, width); + return true; + } + + if ((height % bh != 0) && + (yoffset + height != (GLint) texImage->Height)) { + _mesa_error(ctx, GL_INVALID_VALUE, + "%s(height = %d)", caller, height); + return true; + } + + if ((depth % bd != 0) && + (zoffset + depth != (GLint) texImage->Depth)) { + _mesa_error(ctx, GL_INVALID_VALUE, + "%s(depth = %d)", caller, depth); + return true; + } + } + } + + if (width == 0 || height == 0 || depth == 0) { + /* Not an error, but nothing to do. Return 'true' so that the + * caller simply returns. + */ + return true; + } + + return false; +} + + +/** + * Do PBO-related error checking for getting uncompressed images. + * \return true if there was an error (or the GetTexImage is to be a no-op) + */ +static bool +pbo_error_check(struct gl_context *ctx, GLenum target, + GLsizei width, GLsizei height, GLsizei depth, + GLenum format, GLenum type, GLsizei clientMemSize, + GLvoid *pixels, + const char *caller) { - struct gl_texture_object *texObj; - struct gl_texture_image *texImage; - const GLint maxLevels = _mesa_max_texture_levels(ctx, target); const GLuint dimensions = (target == GL_TEXTURE_3D) ? 3 : 2; + + if (!_mesa_validate_pbo_access(dimensions, &ctx->Pack, width, height, depth, + format, type, clientMemSize, pixels)) { + if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(out of bounds PBO access)", caller); + } else { + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(out of bounds access: bufSize (%d) is too small)", + caller, clientMemSize); + } + return true; + } + + if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { + /* PBO should not be mapped */ + if (_mesa_check_disallowed_mapping(ctx->Pack.BufferObj)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(PBO is mapped)", caller); + return true; + } + } + + if (!_mesa_is_bufferobj(ctx->Pack.BufferObj) && !pixels) { + /* not an error, do nothing */ + return true; + } + + return false; +} + + +/** + * Do error checking for all (non-compressed) get-texture-image functions. + * \return true if any error, false if no errors. + */ +static bool +getteximage_error_check(struct gl_context *ctx, + struct gl_texture_object *texObj, + GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, GLsizei depth, + GLenum format, GLenum type, GLsizei bufSize, + GLvoid *pixels, const char *caller) +{ + struct gl_texture_image *texImage; GLenum baseFormat, err; + GLint maxLevels; - if (!legal_getteximage_target(ctx, target)) { - _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(target=0x%x)", target); - return GL_TRUE; + assert(texObj); + + if (texObj->Target == 0) { + _mesa_error(ctx, GL_INVALID_OPERATION, "%s(invalid texture)", caller); + return true; } - assert(maxLevels != 0); + maxLevels = _mesa_max_texture_levels(ctx, target); if (level < 0 || level >= maxLevels) { - _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexImage(level)" ); - return GL_TRUE; + _mesa_error(ctx, GL_INVALID_VALUE, "%s(level = %d)", caller, level); + return true; } err = _mesa_error_check_format_and_type(ctx, format, type); if (err != GL_NO_ERROR) { - _mesa_error(ctx, err, "glGetTexImage(format/type)"); - return GL_TRUE; + _mesa_error(ctx, err, "%s(format/type)", caller); + return true; } - texObj = _mesa_get_current_tex_object(ctx, target); - - if (!texObj) { - _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(target)"); - return GL_TRUE; + if (dimensions_error_check(ctx, texObj, target, level, + xoffset, yoffset, zoffset, + width, height, depth, caller)) { + return true; } - texImage = _mesa_select_tex_image(ctx, texObj, target, level); - if (!texImage) { - /* non-existant texture image */ - return GL_TRUE; + if (pbo_error_check(ctx, target, width, height, depth, + format, type, bufSize, pixels, caller)) { + return true; } + texImage = select_tex_image(texObj, target, level, zoffset); + assert(texImage); + + /* + * Format and type checking has been moved up to GetnTexImage and + * GetTextureImage so that it happens before getting the texImage object. + */ + baseFormat = _mesa_get_format_base_format(texImage->TexFormat); - + /* Make sure the requested image format is compatible with the * texture's format. */ if (_mesa_is_color_format(format) && !_mesa_is_color_format(baseFormat)) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)"); - return GL_TRUE; + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(format mismatch)", caller); + return true; } else if (_mesa_is_depth_format(format) && !_mesa_is_depth_format(baseFormat) && !_mesa_is_depthstencil_format(baseFormat)) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)"); - return GL_TRUE; + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(format mismatch)", caller); + return true; + } + else if (_mesa_is_stencil_format(format) + && !ctx->Extensions.ARB_texture_stencil8) { + _mesa_error(ctx, GL_INVALID_ENUM, + "%s(format=GL_STENCIL_INDEX)", caller); + return true; + } + else if (_mesa_is_stencil_format(format) + && !_mesa_is_depthstencil_format(baseFormat) + && !_mesa_is_stencil_format(baseFormat)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(format mismatch)", caller); + return true; } else if (_mesa_is_ycbcr_format(format) && !_mesa_is_ycbcr_format(baseFormat)) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)"); - return GL_TRUE; + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(format mismatch)", caller); + return true; } else if (_mesa_is_depthstencil_format(format) && !_mesa_is_depthstencil_format(baseFormat)) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)"); - return GL_TRUE; + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(format mismatch)", caller); + return true; } - else if (_mesa_is_dudv_format(format) - && !_mesa_is_dudv_format(baseFormat)) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)"); - return GL_TRUE; + else if (!_mesa_is_stencil_format(format) && + _mesa_is_enum_format_integer(format) != + _mesa_is_format_integer(texImage->TexFormat)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(format mismatch)", caller); + return true; } - if (!_mesa_validate_pbo_access(dimensions, &ctx->Pack, texImage->Width, - texImage->Height, texImage->Depth, - format, type, clientMemSize, pixels)) { - if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glGetTexImage(out of bounds PBO access)"); - } else { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glGetnTexImageARB(out of bounds access:" - " bufSize (%d) is too small)", clientMemSize); - } - return GL_TRUE; + return false; +} + + +/** + * Return the width, height and depth of a texture image. + * This function must be resilient to bad parameter values since + * this is called before full error checking. + */ +static void +get_texture_image_dims(const struct gl_texture_object *texObj, + GLenum target, GLint level, + GLsizei *width, GLsizei *height, GLsizei *depth) +{ + const struct gl_texture_image *texImage = NULL; + + if (level >= 0 && level < MAX_TEXTURE_LEVELS) { + texImage = _mesa_select_tex_image(texObj, target, level); } - if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { - /* PBO should not be mapped */ - if (_mesa_bufferobj_mapped(ctx->Pack.BufferObj)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glGetTexImage(PBO is mapped)"); - return GL_TRUE; + if (texImage) { + *width = texImage->Width; + *height = texImage->Height; + if (target == GL_TEXTURE_CUBE_MAP) { + *depth = 6; + } + else { + *depth = texImage->Depth; } } - - return GL_FALSE; + else { + *width = *height = *depth = 0; + } } - /** - * Get texture image. Called by glGetTexImage. - * - * \param target texture target. + * Common code for all (uncompressed) get-texture-image functions. + * \param texObj the texture object (should not be null) + * \param target user-provided target, or 0 for DSA * \param level image level. * \param format pixel data format for returned image. * \param type pixel data type for returned image. * \param bufSize size of the pixels data buffer. * \param pixels returned pixel data. + * \param caller name of calling function */ -void GLAPIENTRY -_mesa_GetnTexImageARB( GLenum target, GLint level, GLenum format, - GLenum type, GLsizei bufSize, GLvoid *pixels ) +static void +get_texture_image(struct gl_context *ctx, + struct gl_texture_object *texObj, + GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, GLint depth, + GLenum format, GLenum type, + GLvoid *pixels, const char *caller) { - struct gl_texture_object *texObj; struct gl_texture_image *texImage; - GET_CURRENT_CONTEXT(ctx); + unsigned firstFace, numFaces, i; + GLint imageStride; FLUSH_VERTICES(ctx, 0); - if (getteximage_error_check(ctx, target, level, format, type, - bufSize, pixels)) { - return; - } + texImage = select_tex_image(texObj, target, level, zoffset); + assert(texImage); /* should have been error checked already */ - if (!_mesa_is_bufferobj(ctx->Pack.BufferObj) && !pixels) { - /* not an error, do nothing */ + if (_mesa_is_zero_size_texture(texImage)) { + /* no image data to return */ return; } - texObj = _mesa_get_current_tex_object(ctx, target); - texImage = _mesa_select_tex_image(ctx, texObj, target, level); - - if (_mesa_is_zero_size_texture(texImage)) - return; - if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE)) { - _mesa_debug(ctx, "glGetTexImage(tex %u) format = %s, w=%d, h=%d," + _mesa_debug(ctx, "%s(tex %u) format = %s, w=%d, h=%d," " dstFmt=0x%x, dstType=0x%x\n", - texObj->Name, + caller, texObj->Name, _mesa_get_format_name(texImage->TexFormat), texImage->Width, texImage->Height, format, type); } + if (target == GL_TEXTURE_CUBE_MAP) { + /* Compute stride between cube faces */ + imageStride = _mesa_image_image_stride(&ctx->Pack, width, height, + format, type); + firstFace = zoffset; + numFaces = depth; + zoffset = 0; + depth = 1; + } + else { + imageStride = 0; + firstFace = _mesa_tex_target_to_face(target); + numFaces = 1; + } + _mesa_lock_texture(ctx, texObj); - { - ctx->Driver.GetTexImage(ctx, format, type, pixels, texImage); + + for (i = 0; i < numFaces; i++) { + texImage = texObj->Image[firstFace + i][level]; + assert(texImage); + + ctx->Driver.GetTexSubImage(ctx, xoffset, yoffset, zoffset, + width, height, depth, + format, type, pixels, texImage); + + /* next cube face */ + pixels = (GLubyte *) pixels + imageStride; } + _mesa_unlock_texture(ctx, texObj); } void GLAPIENTRY -_mesa_GetTexImage( GLenum target, GLint level, GLenum format, - GLenum type, GLvoid *pixels ) +_mesa_GetnTexImageARB(GLenum target, GLint level, GLenum format, GLenum type, + GLsizei bufSize, GLvoid *pixels) { - _mesa_GetnTexImageARB(target, level, format, type, INT_MAX, pixels); + GET_CURRENT_CONTEXT(ctx); + static const char *caller = "glGetnTexImageARB"; + GLsizei width, height, depth; + struct gl_texture_object *texObj; + + if (!legal_getteximage_target(ctx, target, false)) { + _mesa_error(ctx, GL_INVALID_ENUM, "%s", caller); + return; + } + + texObj = _mesa_get_current_tex_object(ctx, target); + assert(texObj); + + get_texture_image_dims(texObj, target, level, &width, &height, &depth); + + if (getteximage_error_check(ctx, texObj, target, level, + 0, 0, 0, width, height, depth, + format, type, bufSize, pixels, caller)) { + return; + } + + get_texture_image(ctx, texObj, target, level, + 0, 0, 0, width, height, depth, + format, type, pixels, caller); } -/** - * Do error checking for a glGetCompressedTexImage() call. - * \return GL_TRUE if any error, GL_FALSE if no errors. - */ -static GLboolean -getcompressedteximage_error_check(struct gl_context *ctx, GLenum target, - GLint level, GLsizei clientMemSize, GLvoid *img) +void GLAPIENTRY +_mesa_GetTexImage(GLenum target, GLint level, GLenum format, GLenum type, + GLvoid *pixels ) { + GET_CURRENT_CONTEXT(ctx); + static const char *caller = "glGetTexImage"; + GLsizei width, height, depth; struct gl_texture_object *texObj; - struct gl_texture_image *texImage; - const GLint maxLevels = _mesa_max_texture_levels(ctx, target); - GLuint compressedSize; - if (!legal_getteximage_target(ctx, target)) { - _mesa_error(ctx, GL_INVALID_ENUM, "glGetCompressedTexImage(target=0x%x)", - target); - return GL_TRUE; + if (!legal_getteximage_target(ctx, target, false)) { + _mesa_error(ctx, GL_INVALID_ENUM, "%s", caller); + return; } - assert(maxLevels != 0); - if (level < 0 || level >= maxLevels) { - _mesa_error(ctx, GL_INVALID_VALUE, - "glGetCompressedTexImageARB(bad level = %d)", level); - return GL_TRUE; + texObj = _mesa_get_current_tex_object(ctx, target); + assert(texObj); + + get_texture_image_dims(texObj, target, level, &width, &height, &depth); + + if (getteximage_error_check(ctx, texObj, target, level, + 0, 0, 0, width, height, depth, + format, type, INT_MAX, pixels, caller)) { + return; } - texObj = _mesa_get_current_tex_object(ctx, target); + get_texture_image(ctx, texObj, target, level, + 0, 0, 0, width, height, depth, + format, type, pixels, caller); +} + + +void GLAPIENTRY +_mesa_GetTextureImage(GLuint texture, GLint level, GLenum format, GLenum type, + GLsizei bufSize, GLvoid *pixels) +{ + GET_CURRENT_CONTEXT(ctx); + GLsizei width, height, depth; + static const char *caller = "glGetTextureImage"; + struct gl_texture_object *texObj = + _mesa_lookup_texture_err(ctx, texture, caller); + if (!texObj) { - _mesa_error(ctx, GL_INVALID_ENUM, "glGetCompressedTexImageARB(target)"); - return GL_TRUE; + return; + } + + if (!legal_getteximage_target(ctx, texObj->Target, true)) { + _mesa_error(ctx, GL_INVALID_OPERATION, "%s", caller); + return; } - texImage = _mesa_select_tex_image(ctx, texObj, target, level); + get_texture_image_dims(texObj, texObj->Target, level, + &width, &height, &depth); - if (!texImage) { - /* probably invalid mipmap level */ + if (getteximage_error_check(ctx, texObj, texObj->Target, level, + 0, 0, 0, width, height, depth, + format, type, bufSize, pixels, caller)) { + return; + } + + get_texture_image(ctx, texObj, texObj->Target, level, + 0, 0, 0, width, height, depth, + format, type, pixels, caller); +} + + +void GLAPIENTRY +_mesa_GetTextureSubImage(GLuint texture, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, GLsizei depth, + GLenum format, GLenum type, GLsizei bufSize, + void *pixels) +{ + GET_CURRENT_CONTEXT(ctx); + static const char *caller = "glGetTextureSubImage"; + struct gl_texture_object *texObj = + _mesa_lookup_texture_err(ctx, texture, caller); + + if (!texObj) { + return; + } + + if (!legal_getteximage_target(ctx, texObj->Target, true)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(buffer/multisample texture)", caller); + return; + } + + if (getteximage_error_check(ctx, texObj, texObj->Target, level, + xoffset, yoffset, zoffset, width, height, depth, + format, type, bufSize, pixels, caller)) { + return; + } + + get_texture_image(ctx, texObj, texObj->Target, level, + xoffset, yoffset, zoffset, width, height, depth, + format, type, pixels, caller); +} + + + +/** + * Compute the number of bytes which will be written when retrieving + * a sub-region of a compressed texture. + */ +static GLsizei +packed_compressed_size(GLuint dimensions, mesa_format format, + GLsizei width, GLsizei height, GLsizei depth, + const struct gl_pixelstore_attrib *packing) +{ + struct compressed_pixelstore st; + GLsizei totalBytes; + + _mesa_compute_compressed_pixelstore(dimensions, format, + width, height, depth, + packing, &st); + totalBytes = + (st.CopySlices - 1) * st.TotalRowsPerSlice * st.TotalBytesPerRow + + st.SkipBytes + + (st.CopyRowsPerSlice - 1) * st.TotalBytesPerRow + + st.CopyBytesPerRow; + + return totalBytes; +} + + +/** + * Do error checking for getting compressed texture images. + * \return true if any error, false if no errors. + */ +static bool +getcompressedteximage_error_check(struct gl_context *ctx, + struct gl_texture_object *texObj, + GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, GLsizei depth, + GLsizei bufSize, GLvoid *pixels, + const char *caller) +{ + struct gl_texture_image *texImage; + GLint maxLevels; + GLsizei totalBytes; + GLuint dimensions; + + assert(texObj); + + if (texObj->Target == 0) { + _mesa_error(ctx, GL_INVALID_OPERATION, "%s(invalid texture)", caller); + return true; + } + + maxLevels = _mesa_max_texture_levels(ctx, target); + if (level < 0 || level >= maxLevels) { _mesa_error(ctx, GL_INVALID_VALUE, - "glGetCompressedTexImageARB(level)"); - return GL_TRUE; + "%s(bad level = %d)", caller, level); + return true; } + if (dimensions_error_check(ctx, texObj, target, level, + xoffset, yoffset, zoffset, + width, height, depth, caller)) { + return true; + } + + texImage = select_tex_image(texObj, target, level, zoffset); + assert(texImage); + if (!_mesa_is_format_compressed(texImage->TexFormat)) { _mesa_error(ctx, GL_INVALID_OPERATION, - "glGetCompressedTexImageARB(texture is not compressed)"); - return GL_TRUE; + "%s(texture is not compressed)", caller); + return true; } - compressedSize = _mesa_format_image_size(texImage->TexFormat, - texImage->Width, - texImage->Height, - texImage->Depth); + /* Check for invalid pixel storage modes */ + dimensions = _mesa_get_texture_dimensions(texObj->Target); + if (!_mesa_compressed_pixel_storage_error_check(ctx, dimensions, + &ctx->Pack, + caller)) { + return true; + } - if (!_mesa_is_bufferobj(ctx->Pack.BufferObj)) { - /* do bounds checking on writing to client memory */ - if (clientMemSize < (GLsizei) compressedSize) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glGetnCompressedTexImageARB(out of bounds access:" - " bufSize (%d) is too small)", clientMemSize); - return GL_TRUE; - } - } else { + /* Compute number of bytes that may be touched in the dest buffer */ + totalBytes = packed_compressed_size(dimensions, texImage->TexFormat, + width, height, depth, + &ctx->Pack); + + /* Do dest buffer bounds checking */ + if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { /* do bounds checking on PBO write */ - if ((const GLubyte *) img + compressedSize > - (const GLubyte *) ctx->Pack.BufferObj->Size) { + if ((GLubyte *) pixels + totalBytes > + (GLubyte *) ctx->Pack.BufferObj->Size) { _mesa_error(ctx, GL_INVALID_OPERATION, - "glGetCompressedTexImage(out of bounds PBO access)"); - return GL_TRUE; + "%s(out of bounds PBO access)", caller); + return true; } /* make sure PBO is not mapped */ - if (_mesa_bufferobj_mapped(ctx->Pack.BufferObj)) { + if (_mesa_check_disallowed_mapping(ctx->Pack.BufferObj)) { + _mesa_error(ctx, GL_INVALID_OPERATION, "%s(PBO is mapped)", caller); + return true; + } + } + else { + /* do bounds checking on writing to client memory */ + if (totalBytes > bufSize) { _mesa_error(ctx, GL_INVALID_OPERATION, - "glGetCompressedTexImage(PBO is mapped)"); - return GL_TRUE; + "%s(out of bounds access: bufSize (%d) is too small)", + caller, bufSize); + return true; } } - return GL_FALSE; + if (!_mesa_is_bufferobj(ctx->Pack.BufferObj) && !pixels) { + /* not an error, but do nothing */ + return true; + } + + return false; } -void GLAPIENTRY -_mesa_GetnCompressedTexImageARB(GLenum target, GLint level, GLsizei bufSize, - GLvoid *img) +/** + * Common helper for all glGetCompressed-teximage functions. + */ +static void +get_compressed_texture_image(struct gl_context *ctx, + struct gl_texture_object *texObj, + GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, GLint depth, + GLvoid *pixels, + const char *caller) { - struct gl_texture_object *texObj; struct gl_texture_image *texImage; - GET_CURRENT_CONTEXT(ctx); + unsigned firstFace, numFaces, i, imageStride; FLUSH_VERTICES(ctx, 0); - if (getcompressedteximage_error_check(ctx, target, level, bufSize, img)) { - return; - } - - if (!_mesa_is_bufferobj(ctx->Pack.BufferObj) && !img) { - /* not an error, do nothing */ - return; - } - - texObj = _mesa_get_current_tex_object(ctx, target); - texImage = _mesa_select_tex_image(ctx, texObj, target, level); + texImage = select_tex_image(texObj, target, level, zoffset); + assert(texImage); /* should have been error checked already */ if (_mesa_is_zero_size_texture(texImage)) return; if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE)) { _mesa_debug(ctx, - "glGetCompressedTexImage(tex %u) format = %s, w=%d, h=%d\n", - texObj->Name, + "%s(tex %u) format = %s, w=%d, h=%d\n", + caller, texObj->Name, _mesa_get_format_name(texImage->TexFormat), texImage->Width, texImage->Height); } + if (target == GL_TEXTURE_CUBE_MAP) { + struct compressed_pixelstore store; + + /* Compute image stride between cube faces */ + _mesa_compute_compressed_pixelstore(2, texImage->TexFormat, + width, height, depth, + &ctx->Pack, &store); + imageStride = store.TotalBytesPerRow * store.TotalRowsPerSlice; + + firstFace = zoffset; + numFaces = depth; + zoffset = 0; + depth = 1; + } + else { + imageStride = 0; + firstFace = _mesa_tex_target_to_face(target); + numFaces = 1; + } + _mesa_lock_texture(ctx, texObj); - { - ctx->Driver.GetCompressedTexImage(ctx, texImage, img); + + for (i = 0; i < numFaces; i++) { + texImage = texObj->Image[firstFace + i][level]; + assert(texImage); + + get_compressed_texsubimage_sw(ctx, texImage, + xoffset, yoffset, zoffset, + width, height, depth, pixels); + + /* next cube face */ + pixels = (GLubyte *) pixels + imageStride; } + _mesa_unlock_texture(ctx, texObj); } + +void GLAPIENTRY +_mesa_GetnCompressedTexImageARB(GLenum target, GLint level, GLsizei bufSize, + GLvoid *pixels) +{ + GET_CURRENT_CONTEXT(ctx); + static const char *caller = "glGetnCompressedTexImageARB"; + GLsizei width, height, depth; + struct gl_texture_object *texObj; + + if (!legal_getteximage_target(ctx, target, false)) { + _mesa_error(ctx, GL_INVALID_ENUM, "%s", caller); + return; + } + + texObj = _mesa_get_current_tex_object(ctx, target); + assert(texObj); + + get_texture_image_dims(texObj, target, level, &width, &height, &depth); + + if (getcompressedteximage_error_check(ctx, texObj, target, level, + 0, 0, 0, width, height, depth, + INT_MAX, pixels, caller)) { + return; + } + + get_compressed_texture_image(ctx, texObj, target, level, + 0, 0, 0, width, height, depth, + pixels, caller); +} + + void GLAPIENTRY -_mesa_GetCompressedTexImage(GLenum target, GLint level, GLvoid *img) +_mesa_GetCompressedTexImage(GLenum target, GLint level, GLvoid *pixels) { - _mesa_GetnCompressedTexImageARB(target, level, INT_MAX, img); + GET_CURRENT_CONTEXT(ctx); + static const char *caller = "glGetCompressedTexImage"; + GLsizei width, height, depth; + struct gl_texture_object *texObj; + + if (!legal_getteximage_target(ctx, target, false)) { + _mesa_error(ctx, GL_INVALID_ENUM, "%s", caller); + return; + } + + texObj = _mesa_get_current_tex_object(ctx, target); + assert(texObj); + + get_texture_image_dims(texObj, target, level, + &width, &height, &depth); + + if (getcompressedteximage_error_check(ctx, texObj, target, level, + 0, 0, 0, width, height, depth, + INT_MAX, pixels, caller)) { + return; + } + + get_compressed_texture_image(ctx, texObj, target, level, + 0, 0, 0, width, height, depth, + pixels, caller); +} + + +void GLAPIENTRY +_mesa_GetCompressedTextureImage(GLuint texture, GLint level, + GLsizei bufSize, GLvoid *pixels) +{ + GET_CURRENT_CONTEXT(ctx); + static const char *caller = "glGetCompressedTextureImage"; + GLsizei width, height, depth; + struct gl_texture_object *texObj = + _mesa_lookup_texture_err(ctx, texture, caller); + + if (!texObj) { + return; + } + + get_texture_image_dims(texObj, texObj->Target, level, + &width, &height, &depth); + + if (getcompressedteximage_error_check(ctx, texObj, texObj->Target, level, + 0, 0, 0, width, height, depth, + bufSize, pixels, caller)) { + return; + } + + get_compressed_texture_image(ctx, texObj, texObj->Target, level, + 0, 0, 0, width, height, depth, + pixels, caller); +} + + +void APIENTRY +_mesa_GetCompressedTextureSubImage(GLuint texture, GLint level, + GLint xoffset, GLint yoffset, + GLint zoffset, GLsizei width, + GLsizei height, GLsizei depth, + GLsizei bufSize, void *pixels) +{ + GET_CURRENT_CONTEXT(ctx); + static const char *caller = "glGetCompressedTextureImage"; + struct gl_texture_object *texObj = NULL; + + texObj = _mesa_lookup_texture_err(ctx, texture, caller); + if (!texObj) { + return; + } + + if (getcompressedteximage_error_check(ctx, texObj, texObj->Target, level, + xoffset, yoffset, zoffset, + width, height, depth, + bufSize, pixels, caller)) { + return; + } + + get_compressed_texture_image(ctx, texObj, texObj->Target, level, + xoffset, yoffset, zoffset, + width, height, depth, + pixels, caller); }