| 0,0 → 1,905 |
|---|
| /* |
| * Mesa 3-D graphics library |
| * Version: 7.7 |
| * |
| * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. |
| * Copyright (c) 2009 VMware, Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included |
| * in all copies or substantial portions of the Software. |
| * |
| * 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 |
| * BRIAN PAUL 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. |
| */ |
| |
| |
| /** |
| * Code for glGetTexImage() and glGetCompressedTexImage(). |
| */ |
| |
| |
| #include "glheader.h" |
| #include "bufferobj.h" |
| #include "enums.h" |
| #include "context.h" |
| #include "formats.h" |
| #include "image.h" |
| #include "pack.h" |
| #include "texgetimage.h" |
| #include "teximage.h" |
| |
| |
| |
| /** |
| * Can the given type represent negative values? |
| */ |
| static INLINE GLboolean |
| type_with_negative_values(GLenum type) |
| { |
| switch (type) { |
| case GL_BYTE: |
| case GL_SHORT: |
| case GL_INT: |
| case GL_FLOAT: |
| case GL_HALF_FLOAT_ARB: |
| return GL_TRUE; |
| default: |
| return GL_FALSE; |
| } |
| } |
| |
| |
| /** |
| * glGetTexImage for color index pixels. |
| */ |
| static void |
| get_tex_color_index(struct gl_context *ctx, GLuint dimensions, |
| GLenum format, GLenum type, GLvoid *pixels, |
| const struct gl_texture_image *texImage) |
| { |
| const GLint width = texImage->Width; |
| const GLint height = texImage->Height; |
| const GLint depth = texImage->Depth; |
| const GLuint indexBits = |
| _mesa_get_format_bits(texImage->TexFormat, GL_TEXTURE_INDEX_SIZE_EXT); |
| const GLbitfield transferOps = 0x0; |
| GLint img, row, col; |
| |
| for (img = 0; img < depth; img++) { |
| for (row = 0; row < height; row++) { |
| GLuint indexRow[MAX_WIDTH] = { 0 }; |
| void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels, |
| width, height, format, type, |
| img, row, 0); |
| assert(dest); |
| |
| if (indexBits == 8) { |
| const GLubyte *src = (const GLubyte *) texImage->Data; |
| src += width * (img * texImage->Height + row); |
| for (col = 0; col < width; col++) { |
| indexRow[col] = src[col]; |
| } |
| } |
| else if (indexBits == 16) { |
| const GLushort *src = (const GLushort *) texImage->Data; |
| src += width * (img * texImage->Height + row); |
| for (col = 0; col < width; col++) { |
| indexRow[col] = src[col]; |
| } |
| } |
| else { |
| _mesa_problem(ctx, "Color index problem in _mesa_GetTexImage"); |
| } |
| _mesa_pack_index_span(ctx, width, type, dest, |
| indexRow, &ctx->Pack, transferOps); |
| } |
| } |
| } |
| |
| |
| /** |
| * glGetTexImage for depth/Z pixels. |
| */ |
| static void |
| get_tex_depth(struct gl_context *ctx, GLuint dimensions, |
| GLenum format, GLenum type, GLvoid *pixels, |
| const struct gl_texture_image *texImage) |
| { |
| const GLint width = texImage->Width; |
| const GLint height = texImage->Height; |
| const GLint depth = texImage->Depth; |
| GLint img, row, col; |
| GLfloat *depthRow = (GLfloat *) malloc(width * sizeof(GLfloat)); |
| |
| if (!depthRow) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage"); |
| return; |
| } |
| |
| for (img = 0; img < depth; img++) { |
| for (row = 0; row < height; row++) { |
| void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels, |
| width, height, format, type, |
| img, row, 0); |
| assert(dest); |
| |
| for (col = 0; col < width; col++) { |
| texImage->FetchTexelf(texImage, col, row, img, depthRow + col); |
| } |
| _mesa_pack_depth_span(ctx, width, dest, type, depthRow, &ctx->Pack); |
| } |
| } |
| |
| free(depthRow); |
| } |
| |
| |
| /** |
| * glGetTexImage for depth/stencil pixels. |
| */ |
| static void |
| get_tex_depth_stencil(struct gl_context *ctx, GLuint dimensions, |
| GLenum format, GLenum type, GLvoid *pixels, |
| const struct gl_texture_image *texImage) |
| { |
| const GLint width = texImage->Width; |
| const GLint height = texImage->Height; |
| const GLint depth = texImage->Depth; |
| const GLuint *src = (const GLuint *) texImage->Data; |
| GLint img, row; |
| |
| for (img = 0; img < depth; img++) { |
| for (row = 0; row < height; row++) { |
| void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels, |
| width, height, format, type, |
| img, row, 0); |
| memcpy(dest, src, width * sizeof(GLuint)); |
| if (ctx->Pack.SwapBytes) { |
| _mesa_swap4((GLuint *) dest, width); |
| } |
| |
| src += width * row + width * height * img; |
| } |
| } |
| } |
| |
| |
| /** |
| * glGetTexImage for YCbCr pixels. |
| */ |
| static void |
| get_tex_ycbcr(struct gl_context *ctx, GLuint dimensions, |
| GLenum format, GLenum type, GLvoid *pixels, |
| const struct gl_texture_image *texImage) |
| { |
| const GLint width = texImage->Width; |
| const GLint height = texImage->Height; |
| const GLint depth = texImage->Depth; |
| const GLint rowstride = texImage->RowStride; |
| const GLushort *src = (const GLushort *) texImage->Data; |
| GLint img, row; |
| |
| for (img = 0; img < depth; img++) { |
| for (row = 0; row < height; row++) { |
| void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels, |
| width, height, format, type, |
| img, row, 0); |
| memcpy(dest, src, width * sizeof(GLushort)); |
| |
| /* check for byte swapping */ |
| if ((texImage->TexFormat == MESA_FORMAT_YCBCR |
| && type == GL_UNSIGNED_SHORT_8_8_REV_MESA) || |
| (texImage->TexFormat == MESA_FORMAT_YCBCR_REV |
| && type == GL_UNSIGNED_SHORT_8_8_MESA)) { |
| if (!ctx->Pack.SwapBytes) |
| _mesa_swap2((GLushort *) dest, width); |
| } |
| else if (ctx->Pack.SwapBytes) { |
| _mesa_swap2((GLushort *) dest, width); |
| } |
| |
| src += rowstride; |
| } |
| } |
| } |
| |
| |
| #if FEATURE_EXT_texture_sRGB |
| |
| |
| /** |
| * Convert a float value from linear space to a |
| * non-linear sRGB value in [0, 255]. |
| * Not terribly efficient. |
| */ |
| static INLINE GLfloat |
| linear_to_nonlinear(GLfloat cl) |
| { |
| /* can't have values outside [0, 1] */ |
| GLfloat cs; |
| if (cl < 0.0031308f) { |
| cs = 12.92f * cl; |
| } |
| else { |
| cs = (GLfloat)(1.055 * pow(cl, 0.41666) - 0.055); |
| } |
| return cs; |
| } |
| |
| |
| /** |
| * glGetTexImagefor sRGB pixels; |
| */ |
| static void |
| get_tex_srgb(struct gl_context *ctx, GLuint dimensions, |
| GLenum format, GLenum type, GLvoid *pixels, |
| const struct gl_texture_image *texImage) |
| { |
| const GLint width = texImage->Width; |
| const GLint height = texImage->Height; |
| const GLint depth = texImage->Depth; |
| const GLbitfield transferOps = 0x0; |
| GLint img, row; |
| GLfloat (*rgba)[4] = (GLfloat (*)[4]) malloc(4 * width * sizeof(GLfloat)); |
| |
| if (!rgba) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage"); |
| return; |
| } |
| |
| for (img = 0; img < depth; img++) { |
| for (row = 0; row < height; row++) { |
| void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels, |
| width, height, format, type, |
| img, row, 0); |
| |
| GLint col; |
| |
| /* convert row to RGBA format */ |
| for (col = 0; col < width; col++) { |
| texImage->FetchTexelf(texImage, col, row, img, rgba[col]); |
| if (texImage->_BaseFormat == GL_LUMINANCE) { |
| rgba[col][RCOMP] = linear_to_nonlinear(rgba[col][RCOMP]); |
| rgba[col][GCOMP] = 0.0; |
| rgba[col][BCOMP] = 0.0; |
| } |
| else if (texImage->_BaseFormat == GL_LUMINANCE_ALPHA) { |
| rgba[col][RCOMP] = linear_to_nonlinear(rgba[col][RCOMP]); |
| rgba[col][GCOMP] = 0.0; |
| rgba[col][BCOMP] = 0.0; |
| } |
| else if (texImage->_BaseFormat == GL_RGB || |
| texImage->_BaseFormat == GL_RGBA) { |
| rgba[col][RCOMP] = linear_to_nonlinear(rgba[col][RCOMP]); |
| rgba[col][GCOMP] = linear_to_nonlinear(rgba[col][GCOMP]); |
| rgba[col][BCOMP] = linear_to_nonlinear(rgba[col][BCOMP]); |
| } |
| } |
| _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba, |
| format, type, dest, |
| &ctx->Pack, transferOps); |
| } |
| } |
| |
| free(rgba); |
| } |
| |
| |
| #else /* FEATURE_EXT_texture_sRGB */ |
| |
| |
| static INLINE void |
| get_tex_srgb(struct gl_context *ctx, GLuint dimensions, |
| GLenum format, GLenum type, GLvoid *pixels, |
| const struct gl_texture_image *texImage) |
| { |
| ASSERT_NO_FEATURE(); |
| } |
| |
| |
| #endif /* FEATURE_EXT_texture_sRGB */ |
| |
| |
| /** |
| * glGetTexImagefor RGBA, Luminance, etc. pixels. |
| * This is the slow way since we use texture sampling. |
| */ |
| static void |
| get_tex_rgba(struct gl_context *ctx, GLuint dimensions, |
| GLenum format, GLenum type, GLvoid *pixels, |
| const struct gl_texture_image *texImage) |
| { |
| const GLint width = texImage->Width; |
| const GLint height = texImage->Height; |
| const GLint depth = texImage->Depth; |
| /* Normally, no pixel transfer ops are performed during glGetTexImage. |
| * The only possible exception is component clamping to [0,1]. |
| */ |
| GLbitfield transferOps = 0x0; |
| GLint img, row; |
| GLfloat (*rgba)[4] = (GLfloat (*)[4]) malloc(4 * width * sizeof(GLfloat)); |
| |
| if (!rgba) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage"); |
| return; |
| } |
| |
| for (img = 0; img < depth; img++) { |
| for (row = 0; row < height; row++) { |
| void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels, |
| width, height, format, type, |
| img, row, 0); |
| GLint col; |
| GLenum dataType = _mesa_get_format_datatype(texImage->TexFormat); |
| |
| /* clamp does not apply to GetTexImage (final conversion)? |
| * Looks like we need clamp though when going from format |
| * containing negative values to unsigned format. |
| */ |
| if (format == GL_LUMINANCE || format == GL_LUMINANCE_ALPHA) { |
| transferOps |= IMAGE_CLAMP_BIT; |
| } |
| else if (!type_with_negative_values(type) && |
| (dataType == GL_FLOAT || |
| dataType == GL_SIGNED_NORMALIZED)) { |
| transferOps |= IMAGE_CLAMP_BIT; |
| } |
| |
| for (col = 0; col < width; col++) { |
| texImage->FetchTexelf(texImage, col, row, img, rgba[col]); |
| if (texImage->_BaseFormat == GL_ALPHA) { |
| rgba[col][RCOMP] = 0.0F; |
| rgba[col][GCOMP] = 0.0F; |
| rgba[col][BCOMP] = 0.0F; |
| } |
| else if (texImage->_BaseFormat == GL_LUMINANCE) { |
| rgba[col][GCOMP] = 0.0F; |
| rgba[col][BCOMP] = 0.0F; |
| rgba[col][ACOMP] = 1.0F; |
| } |
| else if (texImage->_BaseFormat == GL_LUMINANCE_ALPHA) { |
| rgba[col][GCOMP] = 0.0F; |
| rgba[col][BCOMP] = 0.0F; |
| } |
| else if (texImage->_BaseFormat == GL_INTENSITY) { |
| rgba[col][GCOMP] = 0.0F; |
| rgba[col][BCOMP] = 0.0F; |
| rgba[col][ACOMP] = 1.0F; |
| } |
| } |
| _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba, |
| format, type, dest, |
| &ctx->Pack, transferOps); |
| } |
| } |
| |
| free(rgba); |
| } |
| |
| |
| /** |
| * Try to do glGetTexImage() with simple memcpy(). |
| * \return GL_TRUE if done, GL_FALSE otherwise |
| */ |
| static GLboolean |
| get_tex_memcpy(struct gl_context *ctx, GLenum format, GLenum type, GLvoid *pixels, |
| const struct gl_texture_object *texObj, |
| const struct gl_texture_image *texImage) |
| { |
| GLboolean memCopy = GL_FALSE; |
| |
| /* Texture image should have been mapped already */ |
| assert(texImage->Data); |
| |
| /* |
| * Check if the src/dst formats are compatible. |
| * Also note that GL's pixel transfer ops don't apply to glGetTexImage() |
| * so we don't have to worry about those. |
| * XXX more format combinations could be supported here. |
| */ |
| if ((texObj->Target == GL_TEXTURE_1D || |
| texObj->Target == GL_TEXTURE_2D || |
| texObj->Target == GL_TEXTURE_RECTANGLE || |
| (texObj->Target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X && |
| texObj->Target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z))) { |
| if (texImage->TexFormat == MESA_FORMAT_ARGB8888 && |
| format == GL_BGRA && |
| type == GL_UNSIGNED_BYTE && |
| !ctx->Pack.SwapBytes && |
| _mesa_little_endian()) { |
| memCopy = GL_TRUE; |
| } |
| else if (texImage->TexFormat == MESA_FORMAT_AL88 && |
| format == GL_LUMINANCE_ALPHA && |
| type == GL_UNSIGNED_BYTE && |
| !ctx->Pack.SwapBytes && |
| _mesa_little_endian()) { |
| memCopy = GL_TRUE; |
| } |
| else if (texImage->TexFormat == MESA_FORMAT_L8 && |
| format == GL_LUMINANCE && |
| type == GL_UNSIGNED_BYTE) { |
| memCopy = GL_TRUE; |
| } |
| else if (texImage->TexFormat == MESA_FORMAT_A8 && |
| format == GL_ALPHA && |
| type == GL_UNSIGNED_BYTE) { |
| memCopy = GL_TRUE; |
| } |
| } |
| |
| if (memCopy) { |
| const GLuint bpp = _mesa_get_format_bytes(texImage->TexFormat); |
| const GLuint bytesPerRow = texImage->Width * bpp; |
| GLubyte *dst = |
| _mesa_image_address2d(&ctx->Pack, pixels, texImage->Width, |
| texImage->Height, format, type, 0, 0); |
| const GLint dstRowStride = |
| _mesa_image_row_stride(&ctx->Pack, texImage->Width, format, type); |
| const GLubyte *src = texImage->Data; |
| const GLint srcRowStride = texImage->RowStride * bpp; |
| GLuint row; |
| |
| if (bytesPerRow == dstRowStride && bytesPerRow == srcRowStride) { |
| memcpy(dst, src, bytesPerRow * texImage->Height); |
| } |
| else { |
| for (row = 0; row < texImage->Height; row++) { |
| memcpy(dst, src, bytesPerRow); |
| dst += dstRowStride; |
| src += srcRowStride; |
| } |
| } |
| } |
| |
| return memCopy; |
| } |
| |
| |
| /** |
| * This is the software fallback for Driver.GetTexImage(). |
| * All error checking will have been done before this routine is called. |
| * The texture image must be mapped. |
| */ |
| void |
| _mesa_get_teximage(struct gl_context *ctx, GLenum target, GLint level, |
| GLenum format, GLenum type, GLvoid *pixels, |
| struct gl_texture_object *texObj, |
| struct gl_texture_image *texImage) |
| { |
| GLuint dimensions; |
| |
| /* If we get here, the texture image should be mapped */ |
| assert(texImage->Data); |
| |
| switch (target) { |
| case GL_TEXTURE_1D: |
| dimensions = 1; |
| break; |
| case GL_TEXTURE_3D: |
| dimensions = 3; |
| break; |
| default: |
| dimensions = 2; |
| } |
| |
| if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { |
| /* Packing texture image into a PBO. |
| * Map the (potentially) VRAM-based buffer into our process space so |
| * we can write into it with the code below. |
| * A hardware driver might use a sophisticated blit to move the |
| * texture data to the PBO if the PBO is in VRAM along with the texture. |
| */ |
| GLubyte *buf = (GLubyte *) |
| ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, |
| GL_WRITE_ONLY_ARB, ctx->Pack.BufferObj); |
| if (!buf) { |
| /* out of memory or other unexpected error */ |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage(map PBO failed)"); |
| return; |
| } |
| /* <pixels> was an offset into the PBO. |
| * Now make it a real, client-side pointer inside the mapped region. |
| */ |
| pixels = ADD_POINTERS(buf, pixels); |
| } |
| |
| if (get_tex_memcpy(ctx, format, type, pixels, texObj, texImage)) { |
| /* all done */ |
| } |
| else if (format == GL_COLOR_INDEX) { |
| get_tex_color_index(ctx, dimensions, format, type, pixels, texImage); |
| } |
| else if (format == GL_DEPTH_COMPONENT) { |
| get_tex_depth(ctx, dimensions, format, type, pixels, texImage); |
| } |
| else if (format == GL_DEPTH_STENCIL_EXT) { |
| get_tex_depth_stencil(ctx, dimensions, format, type, pixels, texImage); |
| } |
| else if (format == GL_YCBCR_MESA) { |
| get_tex_ycbcr(ctx, dimensions, format, type, pixels, texImage); |
| } |
| else if (_mesa_get_format_color_encoding(texImage->TexFormat) == GL_SRGB) { |
| get_tex_srgb(ctx, dimensions, format, type, pixels, texImage); |
| } |
| else { |
| get_tex_rgba(ctx, dimensions, format, type, pixels, texImage); |
| } |
| |
| if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { |
| ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, |
| ctx->Pack.BufferObj); |
| } |
| } |
| |
| |
| |
| /** |
| * This is the software fallback for Driver.GetCompressedTexImage(). |
| * All error checking will have been done before this routine is called. |
| */ |
| void |
| _mesa_get_compressed_teximage(struct gl_context *ctx, GLenum target, GLint level, |
| GLvoid *img, |
| struct gl_texture_object *texObj, |
| struct gl_texture_image *texImage) |
| { |
| const GLuint row_stride = _mesa_format_row_stride(texImage->TexFormat, |
| texImage->Width); |
| const GLuint row_stride_stored = _mesa_format_row_stride(texImage->TexFormat, |
| texImage->RowStride); |
| GLuint i; |
| |
| if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { |
| /* pack texture image into a PBO */ |
| GLubyte *buf = (GLubyte *) |
| ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, |
| GL_WRITE_ONLY_ARB, ctx->Pack.BufferObj); |
| if (!buf) { |
| /* out of memory or other unexpected error */ |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, |
| "glGetCompresssedTexImage(map PBO failed)"); |
| return; |
| } |
| img = ADD_POINTERS(buf, img); |
| } |
| |
| /* no pixelstore or pixel transfer, but respect stride */ |
| |
| if (row_stride == row_stride_stored) { |
| const GLuint size = _mesa_format_image_size(texImage->TexFormat, |
| texImage->Width, |
| texImage->Height, |
| texImage->Depth); |
| memcpy(img, texImage->Data, 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 *)texImage->Data + i * row_stride_stored, |
| row_stride); |
| } |
| } |
| |
| if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { |
| ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, |
| ctx->Pack.BufferObj); |
| } |
| } |
| |
| |
| |
| /** |
| * Do error checking for a glGetTexImage() call. |
| * \return GL_TRUE if any error, GL_FALSE if no errors. |
| */ |
| static GLboolean |
| getteximage_error_check(struct gl_context *ctx, GLenum target, GLint level, |
| GLenum format, GLenum type, GLvoid *pixels ) |
| { |
| struct gl_texture_object *texObj; |
| struct gl_texture_image *texImage; |
| const GLint maxLevels = _mesa_max_texture_levels(ctx, target); |
| GLenum baseFormat; |
| |
| if (maxLevels == 0) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(target=0x%x)", target); |
| return GL_TRUE; |
| } |
| |
| if (level < 0 || level >= maxLevels) { |
| _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexImage(level)" ); |
| return GL_TRUE; |
| } |
| |
| if (_mesa_sizeof_packed_type(type) <= 0) { |
| _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexImage(type)" ); |
| return GL_TRUE; |
| } |
| |
| if (_mesa_components_in_format(format) <= 0 || |
| format == GL_STENCIL_INDEX) { |
| _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexImage(format)" ); |
| return GL_TRUE; |
| } |
| |
| if (!ctx->Extensions.EXT_paletted_texture && _mesa_is_index_format(format)) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)"); |
| return GL_TRUE; |
| } |
| |
| if (!ctx->Extensions.ARB_depth_texture && _mesa_is_depth_format(format)) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)"); |
| return GL_TRUE; |
| } |
| |
| if (!ctx->Extensions.MESA_ycbcr_texture && _mesa_is_ycbcr_format(format)) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)"); |
| return GL_TRUE; |
| } |
| |
| if (!ctx->Extensions.EXT_packed_depth_stencil |
| && _mesa_is_depthstencil_format(format)) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)"); |
| return GL_TRUE; |
| } |
| |
| if (!ctx->Extensions.ATI_envmap_bumpmap |
| && _mesa_is_dudv_format(format)) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)"); |
| return GL_TRUE; |
| } |
| |
| texObj = _mesa_get_current_tex_object(ctx, target); |
| |
| if (!texObj || _mesa_is_proxy_texture(target)) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(target)"); |
| return GL_TRUE; |
| } |
| |
| texImage = _mesa_select_tex_image(ctx, texObj, target, level); |
| if (!texImage) { |
| /* out of memory */ |
| return GL_TRUE; |
| } |
| |
| baseFormat = _mesa_get_format_base_format(texImage->TexFormat); |
| |
| /* Make sure the requested image format is compatible with the |
| * texture's format. Note that a color index texture can be converted |
| * to RGBA so that combo is allowed. |
| */ |
| if (_mesa_is_color_format(format) |
| && !_mesa_is_color_format(baseFormat) |
| && !_mesa_is_index_format(baseFormat)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)"); |
| return GL_TRUE; |
| } |
| else if (_mesa_is_index_format(format) |
| && !_mesa_is_index_format(baseFormat)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)"); |
| return GL_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; |
| } |
| else if (_mesa_is_ycbcr_format(format) |
| && !_mesa_is_ycbcr_format(baseFormat)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)"); |
| return GL_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; |
| } |
| else if (_mesa_is_dudv_format(format) |
| && !_mesa_is_dudv_format(baseFormat)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)"); |
| return GL_TRUE; |
| } |
| |
| if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { |
| /* packing texture image into a PBO */ |
| const GLuint dimensions = (target == GL_TEXTURE_3D) ? 3 : 2; |
| if (!_mesa_validate_pbo_access(dimensions, &ctx->Pack, texImage->Width, |
| texImage->Height, texImage->Depth, |
| format, type, pixels)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetTexImage(out of bounds PBO write)"); |
| return GL_TRUE; |
| } |
| |
| /* 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; |
| } |
| } |
| |
| return GL_FALSE; |
| } |
| |
| |
| |
| /** |
| * Get texture image. Called by glGetTexImage. |
| * |
| * \param target texture target. |
| * \param level image level. |
| * \param format pixel data format for returned image. |
| * \param type pixel data type for returned image. |
| * \param pixels returned pixel data. |
| */ |
| void GLAPIENTRY |
| _mesa_GetTexImage( GLenum target, GLint level, GLenum format, |
| GLenum type, GLvoid *pixels ) |
| { |
| struct gl_texture_object *texObj; |
| struct gl_texture_image *texImage; |
| GET_CURRENT_CONTEXT(ctx); |
| ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); |
| |
| if (getteximage_error_check(ctx, target, level, format, type, pixels)) { |
| return; |
| } |
| |
| if (!_mesa_is_bufferobj(ctx->Pack.BufferObj) && !pixels) { |
| /* not an error, do nothing */ |
| return; |
| } |
| |
| texObj = _mesa_get_current_tex_object(ctx, target); |
| texImage = _mesa_select_tex_image(ctx, texObj, target, level); |
| |
| if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE)) { |
| _mesa_debug(ctx, "glGetTexImage(tex %u) format = %s, w=%d, h=%d," |
| " dstFmt=0x%x, dstType=0x%x\n", |
| texObj->Name, |
| _mesa_get_format_name(texImage->TexFormat), |
| texImage->Width, texImage->Height, |
| format, type); |
| } |
| |
| _mesa_lock_texture(ctx, texObj); |
| { |
| ctx->Driver.GetTexImage(ctx, target, level, format, type, pixels, |
| texObj, texImage); |
| } |
| _mesa_unlock_texture(ctx, texObj); |
| } |
| |
| |
| |
| /** |
| * 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, |
| GLvoid *img) |
| { |
| struct gl_texture_object *texObj; |
| struct gl_texture_image *texImage; |
| const GLint maxLevels = _mesa_max_texture_levels(ctx, target); |
| |
| if (maxLevels == 0) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGetCompressedTexImage(target=0x%x)", |
| target); |
| return GL_TRUE; |
| } |
| |
| if (level < 0 || level >= maxLevels) { |
| _mesa_error(ctx, GL_INVALID_VALUE, |
| "glGetCompressedTexImageARB(bad level = %d)", level); |
| return GL_TRUE; |
| } |
| |
| if (_mesa_is_proxy_texture(target)) { |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "glGetCompressedTexImageARB(bad target = %s)", |
| _mesa_lookup_enum_by_nr(target)); |
| return GL_TRUE; |
| } |
| |
| texObj = _mesa_get_current_tex_object(ctx, target); |
| if (!texObj) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGetCompressedTexImageARB(target)"); |
| return GL_TRUE; |
| } |
| |
| texImage = _mesa_select_tex_image(ctx, texObj, target, level); |
| |
| if (!texImage) { |
| /* probably invalid mipmap level */ |
| _mesa_error(ctx, GL_INVALID_VALUE, |
| "glGetCompressedTexImageARB(level)"); |
| return GL_TRUE; |
| } |
| |
| if (!_mesa_is_format_compressed(texImage->TexFormat)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetCompressedTexImageARB(texture is not compressed)"); |
| return GL_TRUE; |
| } |
| |
| if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { |
| GLuint compressedSize; |
| |
| /* make sure PBO is not mapped */ |
| if (_mesa_bufferobj_mapped(ctx->Pack.BufferObj)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetCompressedTexImage(PBO is mapped)"); |
| return GL_TRUE; |
| } |
| |
| compressedSize = _mesa_format_image_size(texImage->TexFormat, |
| texImage->Width, |
| texImage->Height, |
| texImage->Depth); |
| |
| /* do bounds checking on PBO write */ |
| if ((const GLubyte *) img + compressedSize > |
| (const GLubyte *) ctx->Pack.BufferObj->Size) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetCompressedTexImage(out of bounds PBO write)"); |
| return GL_TRUE; |
| } |
| } |
| |
| return GL_FALSE; |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_GetCompressedTexImageARB(GLenum target, GLint level, GLvoid *img) |
| { |
| struct gl_texture_object *texObj; |
| struct gl_texture_image *texImage; |
| GET_CURRENT_CONTEXT(ctx); |
| ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); |
| |
| if (getcompressedteximage_error_check(ctx, target, level, 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); |
| |
| if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE)) { |
| _mesa_debug(ctx, |
| "glGetCompressedTexImage(tex %u) format = %s, w=%d, h=%d\n", |
| texObj->Name, |
| _mesa_get_format_name(texImage->TexFormat), |
| texImage->Width, texImage->Height); |
| } |
| |
| _mesa_lock_texture(ctx, texObj); |
| { |
| ctx->Driver.GetCompressedTexImage(ctx, target, level, img, |
| texObj, texImage); |
| } |
| _mesa_unlock_texture(ctx, texObj); |
| } |