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Diffstat (limited to 'src/mesa/main/texstore.c')
| -rw-r--r-- | src/mesa/main/texstore.c | 3677 |
1 files changed, 3677 insertions, 0 deletions
diff --git a/src/mesa/main/texstore.c b/src/mesa/main/texstore.c new file mode 100644 index 0000000000..87f8fa7a0d --- /dev/null +++ b/src/mesa/main/texstore.c @@ -0,0 +1,3677 @@ +/* + * Mesa 3-D graphics library + * Version: 6.5.1 + * + * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. + * + * 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. + */ + +/* + * Authors: + * Brian Paul + */ + +/** + * The GL texture image functions in teximage.c basically just do + * error checking and data structure allocation. They in turn call + * device driver functions which actually copy/convert/store the user's + * texture image data. + * + * However, most device drivers will be able to use the fallback functions + * in this file. That is, most drivers will have the following bit of + * code: + * ctx->Driver.TexImage1D = _mesa_store_teximage1d; + * ctx->Driver.TexImage2D = _mesa_store_teximage2d; + * ctx->Driver.TexImage3D = _mesa_store_teximage3d; + * etc... + * + * Texture image processing is actually kind of complicated. We have to do: + * Format/type conversions + * pixel unpacking + * pixel transfer (scale, bais, lookup, convolution!, etc) + * + * These functions can handle most everything, including processing full + * images and sub-images. + */ + + +#include "glheader.h" +#include "bufferobj.h" +#include "colormac.h" +#include "context.h" +#include "convolve.h" +#include "image.h" +#include "macros.h" +#include "mipmap.h" +#include "imports.h" +#include "texcompress.h" +#include "texformat.h" +#include "teximage.h" +#include "texstore.h" +#include "enums.h" + + +enum { + ZERO = 4, + ONE = 5 +}; + + +/** + * Return GL_TRUE if the given image format is one that be converted + * to another format by swizzling. + */ +static GLboolean +can_swizzle(GLenum logicalBaseFormat) +{ + switch (logicalBaseFormat) { + case GL_RGBA: + case GL_RGB: + case GL_LUMINANCE_ALPHA: + case GL_INTENSITY: + case GL_ALPHA: + case GL_LUMINANCE: + case GL_RED: + case GL_GREEN: + case GL_BLUE: + case GL_BGR: + case GL_BGRA: + case GL_ABGR_EXT: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + + +enum { + IDX_LUMINANCE = 0, + IDX_ALPHA, + IDX_INTENSITY, + IDX_LUMINANCE_ALPHA, + IDX_RGB, + IDX_RGBA, + IDX_RED, + IDX_GREEN, + IDX_BLUE, + IDX_BGR, + IDX_BGRA, + IDX_ABGR, + MAX_IDX +}; + +#define MAP1(x) MAP4(x, ZERO, ZERO, ZERO) +#define MAP2(x,y) MAP4(x, y, ZERO, ZERO) +#define MAP3(x,y,z) MAP4(x, y, z, ZERO) +#define MAP4(x,y,z,w) { x, y, z, w, ZERO, ONE } + + +static const struct { + GLubyte format_idx; + GLubyte to_rgba[6]; + GLubyte from_rgba[6]; +} mappings[MAX_IDX] = +{ + { + IDX_LUMINANCE, + MAP4(0,0,0,ONE), + MAP1(0) + }, + + { + IDX_ALPHA, + MAP4(ZERO, ZERO, ZERO, 0), + MAP1(3) + }, + + { + IDX_INTENSITY, + MAP4(0, 0, 0, 0), + MAP1(0), + }, + + { + IDX_LUMINANCE_ALPHA, + MAP4(0,0,0,1), + MAP2(0,3) + }, + + { + IDX_RGB, + MAP4(0,1,2,ONE), + MAP3(0,1,2) + }, + + { + IDX_RGBA, + MAP4(0,1,2,3), + MAP4(0,1,2,3), + }, + + + { + IDX_RED, + MAP4(0, ZERO, ZERO, ONE), + MAP1(0), + }, + + { + IDX_GREEN, + MAP4(ZERO, 0, ZERO, ONE), + MAP1(1), + }, + + { + IDX_BLUE, + MAP4(ZERO, ZERO, 0, ONE), + MAP1(2), + }, + + { + IDX_BGR, + MAP4(2,1,0,ONE), + MAP3(2,1,0) + }, + + { + IDX_BGRA, + MAP4(2,1,0,3), + MAP4(2,1,0,3) + }, + + { + IDX_ABGR, + MAP4(3,2,1,0), + MAP4(3,2,1,0) + }, +}; + + + +/** + * Convert a GL image format enum to an IDX_* value (see above). + */ +static int +get_map_idx(GLenum value) +{ + switch (value) { + case GL_LUMINANCE: return IDX_LUMINANCE; + case GL_ALPHA: return IDX_ALPHA; + case GL_INTENSITY: return IDX_INTENSITY; + case GL_LUMINANCE_ALPHA: return IDX_LUMINANCE_ALPHA; + case GL_RGB: return IDX_RGB; + case GL_RGBA: return IDX_RGBA; + case GL_RED: return IDX_RED; + case GL_GREEN: return IDX_GREEN; + case GL_BLUE: return IDX_BLUE; + case GL_BGR: return IDX_BGR; + case GL_BGRA: return IDX_BGRA; + case GL_ABGR_EXT: return IDX_ABGR; + default: + _mesa_problem(NULL, "Unexpected inFormat"); + return 0; + } +} + + +/** + * When promoting texture formats (see below) we need to compute the + * mapping of dest components back to source components. + * This function does that. + * \param inFormat the incoming format of the texture + * \param outFormat the final texture format + * \return map[6] a full 6-component map + */ +static void +compute_component_mapping(GLenum inFormat, GLenum outFormat, + GLubyte *map) +{ + const int inFmt = get_map_idx(inFormat); + const int outFmt = get_map_idx(outFormat); + const GLubyte *in2rgba = mappings[inFmt].to_rgba; + const GLubyte *rgba2out = mappings[outFmt].from_rgba; + int i; + + for (i = 0; i < 4; i++) + map[i] = in2rgba[rgba2out[i]]; + + map[ZERO] = ZERO; + map[ONE] = ONE; + +/* + _mesa_printf("from %x/%s to %x/%s map %d %d %d %d %d %d\n", + inFormat, _mesa_lookup_enum_by_nr(inFormat), + outFormat, _mesa_lookup_enum_by_nr(outFormat), + map[0], + map[1], + map[2], + map[3], + map[4], + map[5]); +*/ +} + + +/** + * Make a temporary (color) texture image with GLfloat components. + * Apply all needed pixel unpacking and pixel transfer operations. + * Note that there are both logicalBaseFormat and textureBaseFormat parameters. + * Suppose the user specifies GL_LUMINANCE as the internal texture format + * but the graphics hardware doesn't support luminance textures. So, might + * use an RGB hardware format instead. + * If logicalBaseFormat != textureBaseFormat we have some extra work to do. + * + * \param ctx the rendering context + * \param dims image dimensions: 1, 2 or 3 + * \param logicalBaseFormat basic texture derived from the user's + * internal texture format value + * \param textureBaseFormat the actual basic format of the texture + * \param srcWidth source image width + * \param srcHeight source image height + * \param srcDepth source image depth + * \param srcFormat source image format + * \param srcType source image type + * \param srcAddr source image address + * \param srcPacking source image pixel packing + * \return resulting image with format = textureBaseFormat and type = GLfloat. + */ +static GLfloat * +make_temp_float_image(GLcontext *ctx, GLuint dims, + GLenum logicalBaseFormat, + GLenum textureBaseFormat, + GLint srcWidth, GLint srcHeight, GLint srcDepth, + GLenum srcFormat, GLenum srcType, + const GLvoid *srcAddr, + const struct gl_pixelstore_attrib *srcPacking) +{ + GLuint transferOps = ctx->_ImageTransferState; + GLfloat *tempImage; + + ASSERT(dims >= 1 && dims <= 3); + + ASSERT(logicalBaseFormat == GL_RGBA || + logicalBaseFormat == GL_RGB || + logicalBaseFormat == GL_LUMINANCE_ALPHA || + logicalBaseFormat == GL_LUMINANCE || + logicalBaseFormat == GL_ALPHA || + logicalBaseFormat == GL_INTENSITY || + logicalBaseFormat == GL_COLOR_INDEX || + logicalBaseFormat == GL_DEPTH_COMPONENT); + + ASSERT(textureBaseFormat == GL_RGBA || + textureBaseFormat == GL_RGB || + textureBaseFormat == GL_LUMINANCE_ALPHA || + textureBaseFormat == GL_LUMINANCE || + textureBaseFormat == GL_ALPHA || + textureBaseFormat == GL_INTENSITY || + textureBaseFormat == GL_COLOR_INDEX || + textureBaseFormat == GL_DEPTH_COMPONENT); + + /* conventional color image */ + + if ((dims == 1 && ctx->Pixel.Convolution1DEnabled) || + (dims >= 2 && ctx->Pixel.Convolution2DEnabled) || + (dims >= 2 && ctx->Pixel.Separable2DEnabled)) { + /* need image convolution */ + const GLuint preConvTransferOps + = (transferOps & IMAGE_PRE_CONVOLUTION_BITS) | IMAGE_CLAMP_BIT; + const GLuint postConvTransferOps + = (transferOps & IMAGE_POST_CONVOLUTION_BITS) | IMAGE_CLAMP_BIT; + GLint img, row; + GLint convWidth, convHeight; + GLfloat *convImage; + + /* pre-convolution image buffer (3D) */ + tempImage = (GLfloat *) _mesa_malloc(srcWidth * srcHeight * srcDepth + * 4 * sizeof(GLfloat)); + if (!tempImage) + return NULL; + + /* post-convolution image buffer (2D) */ + convImage = (GLfloat *) _mesa_malloc(srcWidth * srcHeight + * 4 * sizeof(GLfloat)); + if (!convImage) { + _mesa_free(tempImage); + return NULL; + } + + /* loop over 3D image slices */ + for (img = 0; img < srcDepth; img++) { + GLfloat *dst = tempImage + img * (srcWidth * srcHeight * 4); + + /* unpack and do transfer ops up to convolution */ + for (row = 0; row < srcHeight; row++) { + const GLvoid *src = _mesa_image_address(dims, srcPacking, + srcAddr, srcWidth, srcHeight, + srcFormat, srcType, img, row, 0); + _mesa_unpack_color_span_float(ctx, srcWidth, GL_RGBA, dst, + srcFormat, srcType, src, + srcPacking, + preConvTransferOps); + dst += srcWidth * 4; + } + + /* do convolution */ + { + GLfloat *src = tempImage + img * (srcWidth * srcHeight * 4); + convWidth = srcWidth; + convHeight = srcHeight; + if (dims == 1) { + ASSERT(ctx->Pixel.Convolution1DEnabled); + _mesa_convolve_1d_image(ctx, &convWidth, src, convImage); + } + else { + if (ctx->Pixel.Convolution2DEnabled) { + _mesa_convolve_2d_image(ctx, &convWidth, &convHeight, + src, convImage); + } + else { + ASSERT(ctx->Pixel.Separable2DEnabled); + _mesa_convolve_sep_image(ctx, &convWidth, &convHeight, + src, convImage); + } + } + } + + /* do post-convolution transfer and pack into tempImage */ + { + const GLint logComponents + = _mesa_components_in_format(logicalBaseFormat); + const GLfloat *src = convImage; + GLfloat *dst = tempImage + img * (convWidth * convHeight * 4); + for (row = 0; row < convHeight; row++) { + _mesa_pack_rgba_span_float(ctx, convWidth, + (GLfloat (*)[4]) src, + logicalBaseFormat, GL_FLOAT, + dst, &ctx->DefaultPacking, + postConvTransferOps); + src += convWidth * 4; + dst += convWidth * logComponents; + } + } + } /* loop over 3D image slices */ + + _mesa_free(convImage); + + /* might need these below */ + srcWidth = convWidth; + srcHeight = convHeight; + } + else { + /* no convolution */ + const GLint components = _mesa_components_in_format(logicalBaseFormat); + const GLint srcStride = _mesa_image_row_stride(srcPacking, + srcWidth, srcFormat, srcType); + GLfloat *dst; + GLint img, row; + + tempImage = (GLfloat *) _mesa_malloc(srcWidth * srcHeight * srcDepth + * components * sizeof(GLfloat)); + if (!tempImage) + return NULL; + + dst = tempImage; + for (img = 0; img < srcDepth; img++) { + const GLubyte *src + = (const GLubyte *) _mesa_image_address(dims, srcPacking, srcAddr, + srcWidth, srcHeight, + srcFormat, srcType, + img, 0, 0); + for (row = 0; row < srcHeight; row++) { + _mesa_unpack_color_span_float(ctx, srcWidth, logicalBaseFormat, + dst, srcFormat, srcType, src, + srcPacking, transferOps); + dst += srcWidth * components; + src += srcStride; + } + } + } + + if (logicalBaseFormat != textureBaseFormat) { + /* more work */ + GLint texComponents = _mesa_components_in_format(textureBaseFormat); + GLint logComponents = _mesa_components_in_format(logicalBaseFormat); + GLfloat *newImage; + GLint i, n; + GLubyte map[6]; + + /* we only promote up to RGB, RGBA and LUMINANCE_ALPHA formats for now */ + ASSERT(textureBaseFormat == GL_RGB || textureBaseFormat == GL_RGBA || + textureBaseFormat == GL_LUMINANCE_ALPHA); + + /* The actual texture format should have at least as many components + * as the logical texture format. + */ + ASSERT(texComponents >= logComponents); + + newImage = (GLfloat *) _mesa_malloc(srcWidth * srcHeight * srcDepth + * texComponents * sizeof(GLfloat)); + if (!newImage) { + _mesa_free(tempImage); + return NULL; + } + + compute_component_mapping(logicalBaseFormat, textureBaseFormat, map); + + n = srcWidth * srcHeight * srcDepth; + for (i = 0; i < n; i++) { + GLint k; + for (k = 0; k < texComponents; k++) { + GLint j = map[k]; + if (j == ZERO) + newImage[i * texComponents + k] = 0.0F; + else if (j == ONE) + newImage[i * texComponents + k] = 1.0F; + else + newImage[i * texComponents + k] = tempImage[i * logComponents + j]; + } + } + + _mesa_free(tempImage); + tempImage = newImage; + } + + return tempImage; +} + + +/** + * Make a temporary (color) texture image with GLchan components. + * Apply all needed pixel unpacking and pixel transfer operations. + * Note that there are both logicalBaseFormat and textureBaseFormat parameters. + * Suppose the user specifies GL_LUMINANCE as the internal texture format + * but the graphics hardware doesn't support luminance textures. So, might + * use an RGB hardware format instead. + * If logicalBaseFormat != textureBaseFormat we have some extra work to do. + * + * \param ctx the rendering context + * \param dims image dimensions: 1, 2 or 3 + * \param logicalBaseFormat basic texture derived from the user's + * internal texture format value + * \param textureBaseFormat the actual basic format of the texture + * \param srcWidth source image width + * \param srcHeight source image height + * \param srcDepth source image depth + * \param srcFormat source image format + * \param srcType source image type + * \param srcAddr source image address + * \param srcPacking source image pixel packing + * \return resulting image with format = textureBaseFormat and type = GLchan. + */ +GLchan * +_mesa_make_temp_chan_image(GLcontext *ctx, GLuint dims, + GLenum logicalBaseFormat, + GLenum textureBaseFormat, + GLint srcWidth, GLint srcHeight, GLint srcDepth, + GLenum srcFormat, GLenum srcType, + const GLvoid *srcAddr, + const struct gl_pixelstore_attrib *srcPacking) +{ + GLuint transferOps = ctx->_ImageTransferState; + const GLint components = _mesa_components_in_format(logicalBaseFormat); + GLboolean freeSrcImage = GL_FALSE; + GLint img, row; + GLchan *tempImage, *dst; + + ASSERT(dims >= 1 && dims <= 3); + + ASSERT(logicalBaseFormat == GL_RGBA || + logicalBaseFormat == GL_RGB || + logicalBaseFormat == GL_LUMINANCE_ALPHA || + logicalBaseFormat == GL_LUMINANCE || + logicalBaseFormat == GL_ALPHA || + logicalBaseFormat == GL_INTENSITY); + + ASSERT(textureBaseFormat == GL_RGBA || + textureBaseFormat == GL_RGB || + textureBaseFormat == GL_LUMINANCE_ALPHA || + textureBaseFormat == GL_LUMINANCE || + textureBaseFormat == GL_ALPHA || + textureBaseFormat == GL_INTENSITY); + + if ((dims == 1 && ctx->Pixel.Convolution1DEnabled) || + (dims >= 2 && ctx->Pixel.Convolution2DEnabled) || + (dims >= 2 && ctx->Pixel.Separable2DEnabled)) { + /* get convolved image */ + GLfloat *convImage = make_temp_float_image(ctx, dims, + logicalBaseFormat, + logicalBaseFormat, + srcWidth, srcHeight, srcDepth, + srcFormat, srcType, + srcAddr, srcPacking); + if (!convImage) + return NULL; + /* the convolved image is our new source image */ + srcAddr = convImage; + srcFormat = logicalBaseFormat; + srcType = GL_FLOAT; + srcPacking = &ctx->DefaultPacking; + _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight); + transferOps = 0; + freeSrcImage = GL_TRUE; + } + + /* unpack and transfer the source image */ + tempImage = (GLchan *) _mesa_malloc(srcWidth * srcHeight * srcDepth + * components * sizeof(GLchan)); + if (!tempImage) + return NULL; + + dst = tempImage; + for (img = 0; img < srcDepth; img++) { + const GLint srcStride = _mesa_image_row_stride(srcPacking, + srcWidth, srcFormat, + srcType); + const GLubyte *src + = (const GLubyte *) _mesa_image_address(dims, srcPacking, srcAddr, + srcWidth, srcHeight, + srcFormat, srcType, + img, 0, 0); + for (row = 0; row < srcHeight; row++) { + _mesa_unpack_color_span_chan(ctx, srcWidth, logicalBaseFormat, dst, + srcFormat, srcType, src, srcPacking, + transferOps); + dst += srcWidth * components; + src += srcStride; + } + } + + /* If we made a temporary image for convolution, free it here */ + if (freeSrcImage) { + _mesa_free((void *) srcAddr); + } + + if (logicalBaseFormat != textureBaseFormat) { + /* one more conversion step */ + GLint texComponents = _mesa_components_in_format(textureBaseFormat); + GLint logComponents = _mesa_components_in_format(logicalBaseFormat); + GLchan *newImage; + GLint i, n; + GLubyte map[6]; + + /* we only promote up to RGB, RGBA and LUMINANCE_ALPHA formats for now */ + ASSERT(textureBaseFormat == GL_RGB || textureBaseFormat == GL_RGBA || + textureBaseFormat == GL_LUMINANCE_ALPHA); + + /* The actual texture format should have at least as many components + * as the logical texture format. + */ + ASSERT(texComponents >= logComponents); + + newImage = (GLchan *) _mesa_malloc(srcWidth * srcHeight * srcDepth + * texComponents * sizeof(GLchan)); + if (!newImage) { + _mesa_free(tempImage); + return NULL; + } + + compute_component_mapping(logicalBaseFormat, textureBaseFormat, map); + + n = srcWidth * srcHeight * srcDepth; + for (i = 0; i < n; i++) { + GLint k; + for (k = 0; k < texComponents; k++) { + GLint j = map[k]; + if (j == ZERO) + newImage[i * texComponents + k] = 0; + else if (j == ONE) + newImage[i * texComponents + k] = CHAN_MAX; + else + newImage[i * texComponents + k] = tempImage[i * logComponents + j]; + } + } + + _mesa_free(tempImage); + tempImage = newImage; + } + + return tempImage; +} + + +/** + * Copy GLubyte pixels from <src> to <dst> with swizzling. + * \param dst destination pixels + * \param dstComponents number of color components in destination pixels + * \param src source pixels + * \param srcComponents number of color components in source pixels + * \param map the swizzle mapping. map[X] says where to find the X component + * in the source image's pixels. For example, if the source image + * is GL_BGRA and X = red, map[0] yields 2. + * \param count number of pixels to copy/swizzle. + */ +static void +swizzle_copy(GLubyte *dst, GLuint dstComponents, const GLubyte *src, + GLuint srcComponents, const GLubyte *map, GLuint count) +{ + GLubyte tmp[6]; + GLuint i; + + tmp[ZERO] = 0x0; + tmp[ONE] = 0xff; + + switch (dstComponents) { + case 4: + for (i = 0; i < count; i++) { + COPY_4UBV(tmp, src); + src += srcComponents; + dst[0] = tmp[map[0]]; + dst[1] = tmp[map[1]]; + dst[2] = tmp[map[2]]; + dst[3] = tmp[map[3]]; + dst += 4; + } + break; + case 3: + for (i = 0; i < count; i++) { + COPY_4UBV(tmp, src); + src += srcComponents; + dst[0] = tmp[map[0]]; + dst[1] = tmp[map[1]]; + dst[2] = tmp[map[2]]; + dst += 3; + } + break; + case 2: + for (i = 0; i < count; i++) { + COPY_4UBV(tmp, src); + src += srcComponents; + dst[0] = tmp[map[0]]; + dst[1] = tmp[map[1]]; + dst += 2; + } + break; + case 1: + /* XXX investigate valgrind invalid read when running demos/texenv.c */ + for (i = 0; i < count; i++) { + COPY_4UBV(tmp, src); + src += srcComponents; + dst[0] = tmp[map[0]]; + dst += 1; + } + break; + } +} + + +static const GLubyte map_identity[6] = { 0, 1, 2, 3, ZERO, ONE }; +static const GLubyte map_3210[6] = { 3, 2, 1, 0, ZERO, ONE }; + +/* Deal with the _REV input types: + */ +static const GLubyte * +type_mapping( GLenum srcType ) +{ + switch (srcType) { + case GL_UNSIGNED_BYTE: + return map_identity; + case GL_UNSIGNED_INT_8_8_8_8: + return _mesa_little_endian() ? map_3210 : map_identity; + case GL_UNSIGNED_INT_8_8_8_8_REV: + return _mesa_little_endian() ? map_identity : map_3210; + default: + return NULL; + } +} + +/* Mapping required if input type is + */ +static const GLubyte * +byteswap_mapping( GLboolean swapBytes, + GLenum srcType ) +{ + if (!swapBytes) + return map_identity; + + switch (srcType) { + case GL_UNSIGNED_BYTE: + return map_identity; + case GL_UNSIGNED_INT_8_8_8_8: + case GL_UNSIGNED_INT_8_8_8_8_REV: + return map_3210; + default: + return NULL; + } +} + + + +/** + * Transfer a GLubyte texture image with component swizzling. + */ +static void +_mesa_swizzle_ubyte_image(GLcontext *ctx, + GLuint dimensions, + GLenum srcFormat, + GLenum srcType, + + GLenum baseInternalFormat, + + const GLubyte *rgba2dst, + GLuint dstComponents, + + GLvoid *dstAddr, + GLint dstXoffset, GLint dstYoffset, GLint dstZoffset, + GLint dstRowStride, + const GLuint *dstImageOffsets, + + GLint srcWidth, GLint srcHeight, GLint srcDepth, + const GLvoid *srcAddr, + const struct gl_pixelstore_attrib *srcPacking ) +{ + GLint srcComponents = _mesa_components_in_format(srcFormat); + const GLubyte *srctype2ubyte, *swap; + GLubyte map[4], src2base[6], base2rgba[6]; + GLint i; + const GLint srcRowStride = + _mesa_image_row_stride(srcPacking, srcWidth, + srcFormat, GL_UNSIGNED_BYTE); + const GLint srcImageStride + = _mesa_image_image_stride(srcPacking, srcWidth, srcHeight, srcFormat, + GL_UNSIGNED_BYTE); + const GLubyte *srcImage + = (const GLubyte *) _mesa_image_address(dimensions, srcPacking, srcAddr, + srcWidth, srcHeight, srcFormat, + GL_UNSIGNED_BYTE, 0, 0, 0); + + (void) ctx; + + /* Translate from src->baseInternal->GL_RGBA->dst. This will + * correctly deal with RGBA->RGB->RGBA conversions where the final + * A value must be 0xff regardless of the incoming alpha values. + */ + compute_component_mapping(srcFormat, baseInternalFormat, src2base); + compute_component_mapping(baseInternalFormat, GL_RGBA, base2rgba); + swap = byteswap_mapping(srcPacking->SwapBytes, srcType); + srctype2ubyte = type_mapping(srcType); + + + for (i = 0; i < 4; i++) + map[i] = srctype2ubyte[swap[src2base[base2rgba[rgba2dst[i]]]]]; + +/* _mesa_printf("map %d %d %d %d\n", map[0], map[1], map[2], map[3]); */ + + if (srcRowStride == dstRowStride && + srcRowStride == srcWidth * srcComponents && + dimensions < 3) { + /* 1 and 2D images only */ + GLubyte *dstImage = (GLubyte *) dstAddr + + dstYoffset * dstRowStride + + dstXoffset * dstComponents; + swizzle_copy(dstImage, dstComponents, srcImage, srcComponents, map, + srcWidth * srcHeight); + } + else { + GLint img, row; + for (img = 0; img < srcDepth; img++) { + const GLubyte *srcRow = srcImage; + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstComponents + + dstYoffset * dstRowStride + + dstXoffset * dstComponents; + for (row = 0; row < srcHeight; row++) { + swizzle_copy(dstRow, dstComponents, srcRow, srcComponents, map, srcWidth); + dstRow += dstRowStride; + srcRow += srcRowStride; + } + srcImage += srcImageStride; + } + } +} + + +/** + * Teximage storage routine for when a simple memcpy will do. + * No pixel transfer operations or special texel encodings allowed. + * 1D, 2D and 3D images supported. + */ +static void +memcpy_texture(GLcontext *ctx, + GLuint dimensions, + const struct gl_texture_format *dstFormat, + GLvoid *dstAddr, + GLint dstXoffset, GLint dstYoffset, GLint dstZoffset, + GLint dstRowStride, + const GLuint *dstImageOffsets, + GLint srcWidth, GLint srcHeight, GLint srcDepth, + GLenum srcFormat, GLenum srcType, + const GLvoid *srcAddr, + const struct gl_pixelstore_attrib *srcPacking) +{ + const GLint srcRowStride = _mesa_image_row_stride(srcPacking, srcWidth, + srcFormat, srcType); + const GLint srcImageStride = _mesa_image_image_stride(srcPacking, + srcWidth, srcHeight, srcFormat, srcType); + const GLubyte *srcImage = (const GLubyte *) _mesa_image_address(dimensions, + srcPacking, srcAddr, srcWidth, srcHeight, srcFormat, srcType, 0, 0, 0); + const GLint bytesPerRow = srcWidth * dstFormat->TexelBytes; + +#if 0 + /* XXX update/re-enable for dstImageOffsets array */ + const GLint bytesPerImage = srcHeight * bytesPerRow; + const GLint bytesPerTexture = srcDepth * bytesPerImage; + GLubyte *dstImage = (GLubyte *) dstAddr + + dstZoffset * dstImageStride + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + + if (dstRowStride == srcRowStride && + dstRowStride == bytesPerRow && + ((dstImageStride == srcImageStride && + dstImageStride == bytesPerImage) || + (srcDepth == 1))) { + /* one big memcpy */ + ctx->Driver.TextureMemCpy(dstImage, srcImage, bytesPerTexture); + } + else + { + GLint img, row; + for (img = 0; img < srcDepth; img++) { + const GLubyte *srcRow = srcImage; + GLubyte *dstRow = dstImage; + for (row = 0; row < srcHeight; row++) { + ctx->Driver.TextureMemCpy(dstRow, srcRow, bytesPerRow); + dstRow += dstRowStride; + srcRow += srcRowStride; + } + srcImage += srcImageStride; + dstImage += dstImageStride; + } + } +#endif + + GLint img, row; + for (img = 0; img < srcDepth; img++) { + const GLubyte *srcRow = srcImage; + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + ctx->Driver.TextureMemCpy(dstRow, srcRow, bytesPerRow); + dstRow += dstRowStride; + srcRow += srcRowStride; + } + srcImage += srcImageStride; + } +} + + + +/** + * Store an image in any of the formats: + * _mesa_texformat_rgba + * _mesa_texformat_rgb + * _mesa_texformat_alpha + * _mesa_texformat_luminance + * _mesa_texformat_luminance_alpha + * _mesa_texformat_intensity + * + */ +GLboolean +_mesa_texstore_rgba(TEXSTORE_PARAMS) +{ + const GLint components = _mesa_components_in_format(baseInternalFormat); + + ASSERT(dstFormat == &_mesa_texformat_rgba || + dstFormat == &_mesa_texformat_rgb || + dstFormat == &_mesa_texformat_alpha || + dstFormat == &_mesa_texformat_luminance || + dstFormat == &_mesa_texformat_luminance_alpha || + dstFormat == &_mesa_texformat_intensity); + ASSERT(baseInternalFormat == GL_RGBA || + baseInternalFormat == GL_RGB || + baseInternalFormat == GL_ALPHA || + baseInternalFormat == GL_LUMINANCE || + baseInternalFormat == GL_LUMINANCE_ALPHA || + baseInternalFormat == GL_INTENSITY); + ASSERT(dstFormat->TexelBytes == components * sizeof(GLchan)); + + if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + baseInternalFormat == srcFormat && + srcType == CHAN_TYPE) { + /* simple memcpy path */ + memcpy_texture(ctx, dims, + dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcFormat, srcType, + srcAddr, srcPacking); + } + else if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + dstFormat == &_mesa_texformat_rgb && + srcFormat == GL_RGBA && + srcType == CHAN_TYPE) { + /* extract RGB from RGBA */ + GLint img, row, col; + for (img = 0; img < srcDepth; img++) { + GLchan *dstImage = (GLchan *) + ((GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes); + + const GLint srcRowStride = _mesa_image_row_stride(srcPacking, + srcWidth, srcFormat, srcType); + GLchan *srcRow = (GLchan *) _mesa_image_address(dims, srcPacking, + srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, 0, 0); + GLchan *dstRow = dstImage; + for (row = 0; row < srcHeight; row++) { + for (col = 0; col < srcWidth; col++) { + dstRow[col * 3 + RCOMP] = srcRow[col * 4 + RCOMP]; + dstRow[col * 3 + GCOMP] = srcRow[col * 4 + GCOMP]; + dstRow[col * 3 + BCOMP] = srcRow[col * 4 + BCOMP]; + } + dstRow += dstRowStride / sizeof(GLchan); + srcRow = (GLchan *) ((GLubyte *) srcRow + srcRowStride); + } + } + } + else if (!ctx->_ImageTransferState && + CHAN_TYPE == GL_UNSIGNED_BYTE && + (srcType == GL_UNSIGNED_BYTE || + srcType == GL_UNSIGNED_INT_8_8_8_8 || + srcType == GL_UNSIGNED_INT_8_8_8_8_REV) && + can_swizzle(baseInternalFormat) && + can_swizzle(srcFormat)) { + + const GLubyte *dstmap; + GLuint components; + + /* dstmap - how to swizzle from RGBA to dst format: + */ + if (dstFormat == &_mesa_texformat_rgba) { + dstmap = mappings[IDX_RGBA].from_rgba; + components = 4; + } + else if (dstFormat == &_mesa_texformat_rgb) { + dstmap = mappings[IDX_RGB].from_rgba; + components = 3; + } + else if (dstFormat == &_mesa_texformat_alpha) { + dstmap = mappings[IDX_ALPHA].from_rgba; + components = 1; + } + else if (dstFormat == &_mesa_texformat_luminance) { + dstmap = mappings[IDX_LUMINANCE].from_rgba; + components = 1; + } + else if (dstFormat == &_mesa_texformat_luminance_alpha) { + dstmap = mappings[IDX_LUMINANCE_ALPHA].from_rgba; + components = 2; + } + else if (dstFormat == &_mesa_texformat_intensity) { + dstmap = mappings[IDX_INTENSITY].from_rgba; + components = 1; + } + else { + _mesa_problem(ctx, "Unexpected dstFormat in _mesa_texstore_rgba"); + return GL_FALSE; + } + + _mesa_swizzle_ubyte_image(ctx, dims, + srcFormat, + srcType, + baseInternalFormat, + dstmap, components, + dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcAddr, + srcPacking); + } + else { + /* general path */ + const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims, + baseInternalFormat, + dstFormat->BaseFormat, + srcWidth, srcHeight, srcDepth, + srcFormat, srcType, srcAddr, + srcPacking); + const GLchan *src = tempImage; + GLint bytesPerRow; + GLint img, row; + if (!tempImage) + return GL_FALSE; + _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight); + bytesPerRow = srcWidth * components * sizeof(GLchan); + for (img = 0; img < srcDepth; img++) { + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + _mesa_memcpy(dstRow, src, bytesPerRow); + dstRow += dstRowStride; + src += srcWidth * components; + } + } + + _mesa_free((void *) tempImage); + } + return GL_TRUE; +} + + +/** + * Store a 32-bit integer depth component texture image. + */ +GLboolean +_mesa_texstore_z32(TEXSTORE_PARAMS) +{ + const GLfloat depthScale = (GLfloat) 0xffffffff; + (void) dims; + ASSERT(dstFormat == &_mesa_texformat_z32); + ASSERT(dstFormat->TexelBytes == sizeof(GLuint)); + + if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + baseInternalFormat == GL_DEPTH_COMPONENT && + srcFormat == GL_DEPTH_COMPONENT && + srcType == GL_UNSIGNED_INT) { + /* simple memcpy path */ + memcpy_texture(ctx, dims, + dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcFormat, srcType, + srcAddr, srcPacking); + } + else { + /* general path */ + GLint img, row; + for (img = 0; img < srcDepth; img++) { + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + const GLvoid *src = _mesa_image_address(dims, srcPacking, + srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, row, 0); + _mesa_unpack_depth_span(ctx, srcWidth, + GL_UNSIGNED_INT, (GLuint *) dstRow, + depthScale, srcType, src, srcPacking); + dstRow += dstRowStride; + } + } + } + return GL_TRUE; +} + +#define STRIDE_3D 0 + +/** + * Store a 16-bit integer depth component texture image. + */ +GLboolean +_mesa_texstore_z16(TEXSTORE_PARAMS) +{ + const GLfloat depthScale = 65535.0f; + (void) dims; + ASSERT(dstFormat == &_mesa_texformat_z16); + ASSERT(dstFormat->TexelBytes == sizeof(GLushort)); + + if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + baseInternalFormat == GL_DEPTH_COMPONENT && + srcFormat == GL_DEPTH_COMPONENT && + srcType == GL_UNSIGNED_SHORT) { + /* simple memcpy path */ + memcpy_texture(ctx, dims, + dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcFormat, srcType, + srcAddr, srcPacking); + } + else { + /* general path */ + GLint img, row; + for (img = 0; img < srcDepth; img++) { + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + const GLvoid *src = _mesa_image_address(dims, srcPacking, + srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, row, 0); + GLushort *dst16 = (GLushort *) dstRow; + _mesa_unpack_depth_span(ctx, srcWidth, + GL_UNSIGNED_SHORT, dst16, depthScale, + srcType, src, srcPacking); + dstRow += dstRowStride; + } + } + } + return GL_TRUE; +} + + +/** + * Store an rgb565 or rgb565_rev texture image. + */ +GLboolean +_mesa_texstore_rgb565(TEXSTORE_PARAMS) +{ + ASSERT(dstFormat == &_mesa_texformat_rgb565 || + dstFormat == &_mesa_texformat_rgb565_rev); + ASSERT(dstFormat->TexelBytes == 2); + + if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + dstFormat == &_mesa_texformat_rgb565 && + baseInternalFormat == GL_RGB && + srcFormat == GL_RGB && + srcType == GL_UNSIGNED_SHORT_5_6_5) { + /* simple memcpy path */ + memcpy_texture(ctx, dims, + dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcFormat, srcType, + srcAddr, srcPacking); + } + else if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + baseInternalFormat == GL_RGB && + srcFormat == GL_RGB && + srcType == GL_UNSIGNED_BYTE && + dims == 2) { + /* do optimized tex store */ + const GLint srcRowStride = _mesa_image_row_stride(srcPacking, srcWidth, + srcFormat, srcType); + const GLubyte *src = (const GLubyte *) + _mesa_image_address(dims, srcPacking, srcAddr, srcWidth, srcHeight, + srcFormat, srcType, 0, 0, 0); + GLubyte *dst = (GLubyte *) dstAddr + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + GLint row, col; + for (row = 0; row < srcHeight; row++) { + const GLubyte *srcUB = (const GLubyte *) src; + GLushort *dstUS = (GLushort *) dst; + /* check for byteswapped format */ + if (dstFormat == &_mesa_texformat_rgb565) { + for (col = 0; col < srcWidth; col++) { + dstUS[col] = PACK_COLOR_565( srcUB[0], srcUB[1], srcUB[2] ); + srcUB += 3; + } + } + else { + for (col = 0; col < srcWidth; col++) { + dstUS[col] = PACK_COLOR_565_REV( srcUB[0], srcUB[1], srcUB[2] ); + srcUB += 3; + } + } + dst += dstRowStride; + src += srcRowStride; + } + } + else { + /* general path */ + const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims, + baseInternalFormat, + dstFormat->BaseFormat, + srcWidth, srcHeight, srcDepth, + srcFormat, srcType, srcAddr, + srcPacking); + const GLchan *src = tempImage; + GLint img, row, col; + if (!tempImage) + return GL_FALSE; + _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight); + for (img = 0; img < srcDepth; img++) { + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + GLushort *dstUS = (GLushort *) dstRow; + /* check for byteswapped format */ + if (dstFormat == &_mesa_texformat_rgb565) { + for (col = 0; col < srcWidth; col++) { + dstUS[col] = PACK_COLOR_565( CHAN_TO_UBYTE(src[RCOMP]), + CHAN_TO_UBYTE(src[GCOMP]), + CHAN_TO_UBYTE(src[BCOMP]) ); + src += 3; + } + } + else { + for (col = 0; col < srcWidth; col++) { + dstUS[col] = PACK_COLOR_565_REV( CHAN_TO_UBYTE(src[RCOMP]), + CHAN_TO_UBYTE(src[GCOMP]), + CHAN_TO_UBYTE(src[BCOMP]) ); + src += 3; + } + } + dstRow += dstRowStride; + } + } + _mesa_free((void *) tempImage); + } + return GL_TRUE; +} + + +/** + * Store a texture in MESA_FORMAT_RGBA8888 or MESA_FORMAT_RGBA8888_REV. + */ +GLboolean +_mesa_texstore_rgba8888(TEXSTORE_PARAMS) +{ + const GLboolean littleEndian = _mesa_little_endian(); + + ASSERT(dstFormat == &_mesa_texformat_rgba8888 || + dstFormat == &_mesa_texformat_rgba8888_rev); + ASSERT(dstFormat->TexelBytes == 4); + + if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + dstFormat == &_mesa_texformat_rgba8888 && + baseInternalFormat == GL_RGBA && + ((srcFormat == GL_RGBA && srcType == GL_UNSIGNED_INT_8_8_8_8) || + (srcFormat == GL_RGBA && srcType == GL_UNSIGNED_BYTE && !littleEndian) || + (srcFormat == GL_ABGR_EXT && srcType == GL_UNSIGNED_INT_8_8_8_8_REV) || + (srcFormat == GL_ABGR_EXT && srcType == GL_UNSIGNED_BYTE && littleEndian))) { + /* simple memcpy path */ + memcpy_texture(ctx, dims, + dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcFormat, srcType, + srcAddr, srcPacking); + } + else if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + dstFormat == &_mesa_texformat_rgba8888_rev && + baseInternalFormat == GL_RGBA && + ((srcFormat == GL_RGBA && srcType == GL_UNSIGNED_INT_8_8_8_8_REV) || + (srcFormat == GL_RGBA && srcType == GL_UNSIGNED_BYTE && littleEndian) || + (srcFormat == GL_ABGR_EXT && srcType == GL_UNSIGNED_INT_8_8_8_8) || + (srcFormat == GL_ABGR_EXT && srcType == GL_UNSIGNED_BYTE && !littleEndian))) { + /* simple memcpy path */ + memcpy_texture(ctx, dims, + dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcFormat, srcType, + srcAddr, srcPacking); + } + else if (!ctx->_ImageTransferState && + (srcType == GL_UNSIGNED_BYTE || + srcType == GL_UNSIGNED_INT_8_8_8_8 || + srcType == GL_UNSIGNED_INT_8_8_8_8_REV) && + can_swizzle(baseInternalFormat) && + can_swizzle(srcFormat)) { + + GLubyte dstmap[4]; + + /* dstmap - how to swizzle from RGBA to dst format: + */ + if ((littleEndian && dstFormat == &_mesa_texformat_rgba8888) || + (!littleEndian && dstFormat == &_mesa_texformat_rgba8888_rev)) { + dstmap[3] = 0; + dstmap[2] = 1; + dstmap[1] = 2; + dstmap[0] = 3; + } + else { + dstmap[3] = 3; + dstmap[2] = 2; + dstmap[1] = 1; + dstmap[0] = 0; + } + + _mesa_swizzle_ubyte_image(ctx, dims, + srcFormat, + srcType, + baseInternalFormat, + dstmap, 4, + dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcAddr, + srcPacking); + } + else { + /* general path */ + const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims, + baseInternalFormat, + dstFormat->BaseFormat, + srcWidth, srcHeight, srcDepth, + srcFormat, srcType, srcAddr, + srcPacking); + const GLchan *src = tempImage; + GLint img, row, col; + if (!tempImage) + return GL_FALSE; + _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight); + for (img = 0; img < srcDepth; img++) { + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + GLuint *dstUI = (GLuint *) dstRow; + if (dstFormat == &_mesa_texformat_rgba8888) { + for (col = 0; col < srcWidth; col++) { + dstUI[col] = PACK_COLOR_8888( CHAN_TO_UBYTE(src[RCOMP]), + CHAN_TO_UBYTE(src[GCOMP]), + CHAN_TO_UBYTE(src[BCOMP]), + CHAN_TO_UBYTE(src[ACOMP]) ); + src += 4; + } + } + else { + for (col = 0; col < srcWidth; col++) { + dstUI[col] = PACK_COLOR_8888_REV( CHAN_TO_UBYTE(src[RCOMP]), + CHAN_TO_UBYTE(src[GCOMP]), + CHAN_TO_UBYTE(src[BCOMP]), + CHAN_TO_UBYTE(src[ACOMP]) ); + src += 4; + } + } + dstRow += dstRowStride; + } + } + _mesa_free((void *) tempImage); + } + return GL_TRUE; +} + + +GLboolean +_mesa_texstore_argb8888(TEXSTORE_PARAMS) +{ + const GLboolean littleEndian = _mesa_little_endian(); + + ASSERT(dstFormat == &_mesa_texformat_argb8888 || + dstFormat == &_mesa_texformat_argb8888_rev); + ASSERT(dstFormat->TexelBytes == 4); + + if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + dstFormat == &_mesa_texformat_argb8888 && + baseInternalFormat == GL_RGBA && + srcFormat == GL_BGRA && + ((srcType == GL_UNSIGNED_BYTE && littleEndian) || + srcType == GL_UNSIGNED_INT_8_8_8_8_REV)) { + /* simple memcpy path (little endian) */ + memcpy_texture(ctx, dims, + dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcFormat, srcType, + srcAddr, srcPacking); + } + else if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + dstFormat == &_mesa_texformat_argb8888_rev && + baseInternalFormat == GL_RGBA && + srcFormat == GL_BGRA && + ((srcType == GL_UNSIGNED_BYTE && !littleEndian) || + srcType == GL_UNSIGNED_INT_8_8_8_8)) { + /* simple memcpy path (big endian) */ + memcpy_texture(ctx, dims, + dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcFormat, srcType, + srcAddr, srcPacking); + } + else if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + dstFormat == &_mesa_texformat_argb8888 && + srcFormat == GL_RGB && + (baseInternalFormat == GL_RGBA || + baseInternalFormat == GL_RGB) && + srcType == GL_UNSIGNED_BYTE) { + + int img, row, col; + for (img = 0; img < srcDepth; img++) { + const GLint srcRowStride = _mesa_image_row_stride(srcPacking, + srcWidth, srcFormat, srcType); + GLubyte *srcRow = (GLubyte *) _mesa_image_address(dims, srcPacking, + srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, 0, 0); + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + for (col = 0; col < srcWidth; col++) { + dstRow[col * 4 + 0] = srcRow[col * 3 + BCOMP]; + dstRow[col * 4 + 1] = srcRow[col * 3 + GCOMP]; + dstRow[col * 4 + 2] = srcRow[col * 3 + RCOMP]; + dstRow[col * 4 + 3] = 0xff; + } + dstRow += dstRowStride; + srcRow += srcRowStride; + } + } + } + else if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + dstFormat == &_mesa_texformat_argb8888 && + srcFormat == GL_RGBA && + baseInternalFormat == GL_RGBA && + (srcType == GL_UNSIGNED_BYTE && littleEndian)) { + GLint img, row, col; + /* For some reason, streaming copies to write-combined regions + * are extremely sensitive to the characteristics of how the + * source data is retrieved. By reordering the source reads to + * be in-order, the speed of this operation increases by half. + * Strangely the same isn't required for the RGB path, above. + */ + for (img = 0; img < srcDepth; img++) { + const GLint srcRowStride = _mesa_image_row_stride(srcPacking, + srcWidth, srcFormat, srcType); + GLubyte *srcRow = (GLubyte *) _mesa_image_address(dims, srcPacking, + srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, 0, 0); + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + + for (row = 0; row < srcHeight; row++) { + for (col = 0; col < srcWidth; col++) { + *(GLuint *)(dstRow + col * 4) = (srcRow[col * 4 + RCOMP] << 16 | + srcRow[col * 4 + GCOMP] << 8 | + srcRow[col * 4 + BCOMP] << 0 | + srcRow[col * 4 + ACOMP] << 24); + } + dstRow += dstRowStride; + srcRow += srcRowStride; + } + } + } + else if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + dstFormat == &_mesa_texformat_argb8888 && + srcFormat == GL_RGBA && + baseInternalFormat == GL_RGBA && + srcType == GL_UNSIGNED_BYTE) { + + GLint img, row, col; + for (img = 0; img < srcDepth; img++) { + const GLint srcRowStride = _mesa_image_row_stride(srcPacking, + srcWidth, srcFormat, srcType); + GLubyte *srcRow = (GLubyte *) _mesa_image_address(dims, srcPacking, + srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, 0, 0); + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + for (col = 0; col < srcWidth; col++) { + dstRow[col * 4 + 0] = srcRow[col * 4 + BCOMP]; + dstRow[col * 4 + 1] = srcRow[col * 4 + GCOMP]; + dstRow[col * 4 + 2] = srcRow[col * 4 + RCOMP]; + dstRow[col * 4 + 3] = srcRow[col * 4 + ACOMP]; + } + dstRow += dstRowStride; + srcRow += srcRowStride; + } + } + } + else if (!ctx->_ImageTransferState && + (srcType == GL_UNSIGNED_BYTE || + srcType == GL_UNSIGNED_INT_8_8_8_8 || + srcType == GL_UNSIGNED_INT_8_8_8_8_REV) && + can_swizzle(baseInternalFormat) && + can_swizzle(srcFormat)) { + + GLubyte dstmap[4]; + + /* dstmap - how to swizzle from RGBA to dst format: + */ + if ((littleEndian && dstFormat == &_mesa_texformat_argb8888) || + (!littleEndian && dstFormat == &_mesa_texformat_argb8888_rev)) { + dstmap[3] = 3; /* alpha */ + dstmap[2] = 0; /* red */ + dstmap[1] = 1; /* green */ + dstmap[0] = 2; /* blue */ + } + else { + assert((littleEndian && dstFormat == &_mesa_texformat_argb8888_rev) || + (!littleEndian && dstFormat == &_mesa_texformat_argb8888)); + dstmap[3] = 2; + dstmap[2] = 1; + dstmap[1] = 0; + dstmap[0] = 3; + } + + _mesa_swizzle_ubyte_image(ctx, dims, + srcFormat, + srcType, + + baseInternalFormat, + dstmap, 4, + dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcAddr, + srcPacking); + } + else { + /* general path */ + const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims, + baseInternalFormat, + dstFormat->BaseFormat, + srcWidth, srcHeight, srcDepth, + srcFormat, srcType, srcAddr, + srcPacking); + const GLchan *src = tempImage; + GLint img, row, col; + if (!tempImage) + return GL_FALSE; + _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight); + for (img = 0; img < srcDepth; img++) { + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + GLuint *dstUI = (GLuint *) dstRow; + if (dstFormat == &_mesa_texformat_argb8888) { + for (col = 0; col < srcWidth; col++) { + dstUI[col] = PACK_COLOR_8888( CHAN_TO_UBYTE(src[ACOMP]), + CHAN_TO_UBYTE(src[RCOMP]), + CHAN_TO_UBYTE(src[GCOMP]), + CHAN_TO_UBYTE(src[BCOMP]) ); + src += 4; + } + } + else { + for (col = 0; col < srcWidth; col++) { + dstUI[col] = PACK_COLOR_8888_REV( CHAN_TO_UBYTE(src[ACOMP]), + CHAN_TO_UBYTE(src[RCOMP]), + CHAN_TO_UBYTE(src[GCOMP]), + CHAN_TO_UBYTE(src[BCOMP]) ); + src += 4; + } + } + dstRow += dstRowStride; + } + } + _mesa_free((void *) tempImage); + } + return GL_TRUE; +} + + +GLboolean +_mesa_texstore_rgb888(TEXSTORE_PARAMS) +{ + const GLboolean littleEndian = _mesa_little_endian(); + + ASSERT(dstFormat == &_mesa_texformat_rgb888); + ASSERT(dstFormat->TexelBytes == 3); + + if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + baseInternalFormat == GL_RGB && + srcFormat == GL_BGR && + srcType == GL_UNSIGNED_BYTE && + littleEndian) { + /* simple memcpy path */ + memcpy_texture(ctx, dims, + dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcFormat, srcType, + srcAddr, srcPacking); + } + else if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + srcFormat == GL_RGBA && + srcType == GL_UNSIGNED_BYTE) { + /* extract RGB from RGBA */ + GLint img, row, col; + for (img = 0; img < srcDepth; img++) { + const GLint srcRowStride = _mesa_image_row_stride(srcPacking, + srcWidth, srcFormat, srcType); + GLubyte *srcRow = (GLubyte *) _mesa_image_address(dims, srcPacking, + srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, 0, 0); + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + for (col = 0; col < srcWidth; col++) { + dstRow[col * 3 + 0] = srcRow[col * 4 + BCOMP]; + dstRow[col * 3 + 1] = srcRow[col * 4 + GCOMP]; + dstRow[col * 3 + 2] = srcRow[col * 4 + RCOMP]; + } + dstRow += dstRowStride; + srcRow += srcRowStride; + } + } + } + else if (!ctx->_ImageTransferState && + srcType == GL_UNSIGNED_BYTE && + can_swizzle(baseInternalFormat) && + can_swizzle(srcFormat)) { + + GLubyte dstmap[4]; + + /* dstmap - how to swizzle from RGBA to dst format: + */ + dstmap[0] = 2; + dstmap[1] = 1; + dstmap[2] = 0; + dstmap[3] = ONE; /* ? */ + + _mesa_swizzle_ubyte_image(ctx, dims, + srcFormat, + srcType, + baseInternalFormat, + dstmap, 3, + dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcAddr, + srcPacking); + } + else { + /* general path */ + const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims, + baseInternalFormat, + dstFormat->BaseFormat, + srcWidth, srcHeight, srcDepth, + srcFormat, srcType, srcAddr, + srcPacking); + const GLchan *src = (const GLchan *) tempImage; + GLint img, row, col; + if (!tempImage) + return GL_FALSE; + _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight); + for (img = 0; img < srcDepth; img++) { + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { +#if 0 + if (littleEndian) { + for (col = 0; col < srcWidth; col++) { + dstRow[col * 3 + 0] = CHAN_TO_UBYTE(src[RCOMP]); + dstRow[col * 3 + 1] = CHAN_TO_UBYTE(src[GCOMP]); + dstRow[col * 3 + 2] = CHAN_TO_UBYTE(src[BCOMP]); + srcUB += 3; + } + } + else { + for (col = 0; col < srcWidth; col++) { + dstRow[col * 3 + 0] = srcUB[BCOMP]; + dstRow[col * 3 + 1] = srcUB[GCOMP]; + dstRow[col * 3 + 2] = srcUB[RCOMP]; + srcUB += 3; + } + } +#else + for (col = 0; col < srcWidth; col++) { + dstRow[col * 3 + 0] = CHAN_TO_UBYTE(src[BCOMP]); + dstRow[col * 3 + 1] = CHAN_TO_UBYTE(src[GCOMP]); + dstRow[col * 3 + 2] = CHAN_TO_UBYTE(src[RCOMP]); + src += 3; + } +#endif + dstRow += dstRowStride; + } + } + _mesa_free((void *) tempImage); + } + return GL_TRUE; +} + + +GLboolean +_mesa_texstore_bgr888(TEXSTORE_PARAMS) +{ + const GLboolean littleEndian = _mesa_little_endian(); + + ASSERT(dstFormat == &_mesa_texformat_bgr888); + ASSERT(dstFormat->TexelBytes == 3); + + if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + baseInternalFormat == GL_RGB && + srcFormat == GL_RGB && + srcType == GL_UNSIGNED_BYTE && + littleEndian) { + /* simple memcpy path */ + memcpy_texture(ctx, dims, + dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcFormat, srcType, + srcAddr, srcPacking); + } + else if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + srcFormat == GL_RGBA && + srcType == GL_UNSIGNED_BYTE) { + /* extract BGR from RGBA */ + int img, row, col; + for (img = 0; img < srcDepth; img++) { + const GLint srcRowStride = _mesa_image_row_stride(srcPacking, + srcWidth, srcFormat, srcType); + GLubyte *srcRow = (GLubyte *) _mesa_image_address(dims, srcPacking, + srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, 0, 0); + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + for (col = 0; col < srcWidth; col++) { + dstRow[col * 3 + 0] = srcRow[col * 4 + RCOMP]; + dstRow[col * 3 + 1] = srcRow[col * 4 + GCOMP]; + dstRow[col * 3 + 2] = srcRow[col * 4 + BCOMP]; + } + dstRow += dstRowStride; + srcRow += srcRowStride; + } + } + } + else if (!ctx->_ImageTransferState && + srcType == GL_UNSIGNED_BYTE && + can_swizzle(baseInternalFormat) && + can_swizzle(srcFormat)) { + + GLubyte dstmap[4]; + + /* dstmap - how to swizzle from RGBA to dst format: + */ + dstmap[0] = 0; + dstmap[1] = 1; + dstmap[2] = 2; + dstmap[3] = ONE; /* ? */ + + _mesa_swizzle_ubyte_image(ctx, dims, + srcFormat, + srcType, + baseInternalFormat, + dstmap, 3, + dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcAddr, + srcPacking); + } + else { + /* general path */ + const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims, + baseInternalFormat, + dstFormat->BaseFormat, + srcWidth, srcHeight, srcDepth, + srcFormat, srcType, srcAddr, + srcPacking); + const GLchan *src = (const GLchan *) tempImage; + GLint img, row, col; + if (!tempImage) + return GL_FALSE; + _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight); + for (img = 0; img < srcDepth; img++) { + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + for (col = 0; col < srcWidth; col++) { + dstRow[col * 3 + 0] = CHAN_TO_UBYTE(src[RCOMP]); + dstRow[col * 3 + 1] = CHAN_TO_UBYTE(src[GCOMP]); + dstRow[col * 3 + 2] = CHAN_TO_UBYTE(src[BCOMP]); + src += 3; + } + dstRow += dstRowStride; + } + } + _mesa_free((void *) tempImage); + } + return GL_TRUE; +} + + +GLboolean +_mesa_texstore_argb4444(TEXSTORE_PARAMS) +{ + ASSERT(dstFormat == &_mesa_texformat_argb4444 || + dstFormat == &_mesa_texformat_argb4444_rev); + ASSERT(dstFormat->TexelBytes == 2); + + if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + dstFormat == &_mesa_texformat_argb4444 && + baseInternalFormat == GL_RGBA && + srcFormat == GL_BGRA && + srcType == GL_UNSIGNED_SHORT_4_4_4_4_REV) { + /* simple memcpy path */ + memcpy_texture(ctx, dims, + dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcFormat, srcType, + srcAddr, srcPacking); + } + else { + /* general path */ + const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims, + baseInternalFormat, + dstFormat->BaseFormat, + srcWidth, srcHeight, srcDepth, + srcFormat, srcType, srcAddr, + srcPacking); + const GLchan *src = tempImage; + GLint img, row, col; + if (!tempImage) + return GL_FALSE; + _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight); + for (img = 0; img < srcDepth; img++) { + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + GLushort *dstUS = (GLushort *) dstRow; + if (dstFormat == &_mesa_texformat_argb4444) { + for (col = 0; col < srcWidth; col++) { + dstUS[col] = PACK_COLOR_4444( CHAN_TO_UBYTE(src[ACOMP]), + CHAN_TO_UBYTE(src[RCOMP]), + CHAN_TO_UBYTE(src[GCOMP]), + CHAN_TO_UBYTE(src[BCOMP]) ); + src += 4; + } + } + else { + for (col = 0; col < srcWidth; col++) { + dstUS[col] = PACK_COLOR_4444_REV( CHAN_TO_UBYTE(src[ACOMP]), + CHAN_TO_UBYTE(src[RCOMP]), + CHAN_TO_UBYTE(src[GCOMP]), + CHAN_TO_UBYTE(src[BCOMP]) ); + src += 4; + } + } + dstRow += dstRowStride; + } + } + _mesa_free((void *) tempImage); + } + return GL_TRUE; +} + + + +GLboolean +_mesa_texstore_argb1555(TEXSTORE_PARAMS) +{ + ASSERT(dstFormat == &_mesa_texformat_argb1555 || + dstFormat == &_mesa_texformat_argb1555_rev); + ASSERT(dstFormat->TexelBytes == 2); + + if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + dstFormat == &_mesa_texformat_argb1555 && + baseInternalFormat == GL_RGBA && + srcFormat == GL_BGRA && + srcType == GL_UNSIGNED_SHORT_1_5_5_5_REV) { + /* simple memcpy path */ + memcpy_texture(ctx, dims, + dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcFormat, srcType, + srcAddr, srcPacking); + } + else { + /* general path */ + const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims, + baseInternalFormat, + dstFormat->BaseFormat, + srcWidth, srcHeight, srcDepth, + srcFormat, srcType, srcAddr, + srcPacking); + const GLchan *src =tempImage; + GLint img, row, col; + if (!tempImage) + return GL_FALSE; + _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight); + for (img = 0; img < srcDepth; img++) { + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + GLushort *dstUS = (GLushort *) dstRow; + if (dstFormat == &_mesa_texformat_argb1555) { + for (col = 0; col < srcWidth; col++) { + dstUS[col] = PACK_COLOR_1555( CHAN_TO_UBYTE(src[ACOMP]), + CHAN_TO_UBYTE(src[RCOMP]), + CHAN_TO_UBYTE(src[GCOMP]), + CHAN_TO_UBYTE(src[BCOMP]) ); + src += 4; + } + } + else { + for (col = 0; col < srcWidth; col++) { + dstUS[col] = PACK_COLOR_1555_REV( CHAN_TO_UBYTE(src[ACOMP]), + CHAN_TO_UBYTE(src[RCOMP]), + CHAN_TO_UBYTE(src[GCOMP]), + CHAN_TO_UBYTE(src[BCOMP]) ); + src += 4; + } + } + dstRow += dstRowStride; + } + } + _mesa_free((void *) tempImage); + } + return GL_TRUE; +} + + +GLboolean +_mesa_texstore_al88(TEXSTORE_PARAMS) +{ + const GLboolean littleEndian = _mesa_little_endian(); + + ASSERT(dstFormat == &_mesa_texformat_al88 || + dstFormat == &_mesa_texformat_al88_rev); + ASSERT(dstFormat->TexelBytes == 2); + + if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + dstFormat == &_mesa_texformat_al88 && + baseInternalFormat == GL_LUMINANCE_ALPHA && + srcFormat == GL_LUMINANCE_ALPHA && + srcType == GL_UNSIGNED_BYTE && + littleEndian) { + /* simple memcpy path */ + memcpy_texture(ctx, dims, + dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcFormat, srcType, + srcAddr, srcPacking); + } + else if (!ctx->_ImageTransferState && + littleEndian && + srcType == GL_UNSIGNED_BYTE && + can_swizzle(baseInternalFormat) && + can_swizzle(srcFormat)) { + + GLubyte dstmap[4]; + + /* dstmap - how to swizzle from RGBA to dst format: + */ + if ((littleEndian && dstFormat == &_mesa_texformat_al88) || + (!littleEndian && dstFormat == &_mesa_texformat_al88_rev)) { + dstmap[0] = 0; + dstmap[1] = 3; + } + else { + dstmap[0] = 3; + dstmap[1] = 0; + } + dstmap[2] = ZERO; /* ? */ + dstmap[3] = ONE; /* ? */ + + _mesa_swizzle_ubyte_image(ctx, dims, + srcFormat, + srcType, + baseInternalFormat, + dstmap, 2, + dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcAddr, + srcPacking); + } + else { + /* general path */ + const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims, + baseInternalFormat, + dstFormat->BaseFormat, + srcWidth, srcHeight, srcDepth, + srcFormat, srcType, srcAddr, + srcPacking); + const GLchan *src = tempImage; + GLint img, row, col; + if (!tempImage) + return GL_FALSE; + _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight); + for (img = 0; img < srcDepth; img++) { + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + GLushort *dstUS = (GLushort *) dstRow; + if (dstFormat == &_mesa_texformat_al88) { + for (col = 0; col < srcWidth; col++) { + /* src[0] is luminance, src[1] is alpha */ + dstUS[col] = PACK_COLOR_88( CHAN_TO_UBYTE(src[1]), + CHAN_TO_UBYTE(src[0]) ); + src += 2; + } + } + else { + for (col = 0; col < srcWidth; col++) { + /* src[0] is luminance, src[1] is alpha */ + dstUS[col] = PACK_COLOR_88_REV( CHAN_TO_UBYTE(src[1]), + CHAN_TO_UBYTE(src[0]) ); + src += 2; + } + } + dstRow += dstRowStride; + } + } + _mesa_free((void *) tempImage); + } + return GL_TRUE; +} + + +GLboolean +_mesa_texstore_rgb332(TEXSTORE_PARAMS) +{ + ASSERT(dstFormat == &_mesa_texformat_rgb332); + ASSERT(dstFormat->TexelBytes == 1); + + if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + baseInternalFormat == GL_RGB && + srcFormat == GL_RGB && srcType == GL_UNSIGNED_BYTE_3_3_2) { + /* simple memcpy path */ + memcpy_texture(ctx, dims, + dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcFormat, srcType, + srcAddr, srcPacking); + } + else { + /* general path */ + const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims, + baseInternalFormat, + dstFormat->BaseFormat, + srcWidth, srcHeight, srcDepth, + srcFormat, srcType, srcAddr, + srcPacking); + const GLchan *src = tempImage; + GLint img, row, col; + if (!tempImage) + return GL_FALSE; + _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight); + for (img = 0; img < srcDepth; img++) { + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + for (col = 0; col < srcWidth; col++) { + dstRow[col] = PACK_COLOR_332( CHAN_TO_UBYTE(src[RCOMP]), + CHAN_TO_UBYTE(src[GCOMP]), + CHAN_TO_UBYTE(src[BCOMP]) ); + src += 3; + } + dstRow += dstRowStride; + } + } + _mesa_free((void *) tempImage); + } + return GL_TRUE; +} + + +/** + * Texstore for _mesa_texformat_a8, _mesa_texformat_l8, _mesa_texformat_i8. + */ +GLboolean +_mesa_texstore_a8(TEXSTORE_PARAMS) +{ + ASSERT(dstFormat == &_mesa_texformat_a8 || + dstFormat == &_mesa_texformat_l8 || + dstFormat == &_mesa_texformat_i8); + ASSERT(dstFormat->TexelBytes == 1); + + if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + baseInternalFormat == srcFormat && + srcType == GL_UNSIGNED_BYTE) { + /* simple memcpy path */ + memcpy_texture(ctx, dims, + dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcFormat, srcType, + srcAddr, srcPacking); + } + else if (!ctx->_ImageTransferState && + srcType == GL_UNSIGNED_BYTE && + can_swizzle(baseInternalFormat) && + can_swizzle(srcFormat)) { + + GLubyte dstmap[4]; + + /* dstmap - how to swizzle from RGBA to dst format: + */ + if (dstFormat == &_mesa_texformat_a8) { + dstmap[0] = 3; + } + else { + dstmap[0] = 0; + } + dstmap[1] = ZERO; /* ? */ + dstmap[2] = ZERO; /* ? */ + dstmap[3] = ONE; /* ? */ + + _mesa_swizzle_ubyte_image(ctx, dims, + srcFormat, + srcType, + baseInternalFormat, + dstmap, 1, + dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcAddr, + srcPacking); + } + else { + /* general path */ + const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims, + baseInternalFormat, + dstFormat->BaseFormat, + srcWidth, srcHeight, srcDepth, + srcFormat, srcType, srcAddr, + srcPacking); + const GLchan *src = tempImage; + GLint img, row, col; + if (!tempImage) + return GL_FALSE; + _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight); + for (img = 0; img < srcDepth; img++) { + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + for (col = 0; col < srcWidth; col++) { + dstRow[col] = CHAN_TO_UBYTE(src[col]); + } + dstRow += dstRowStride; + src += srcWidth; + } + } + _mesa_free((void *) tempImage); + } + return GL_TRUE; +} + + + +GLboolean +_mesa_texstore_ci8(TEXSTORE_PARAMS) +{ + (void) dims; (void) baseInternalFormat; + ASSERT(dstFormat == &_mesa_texformat_ci8); + ASSERT(dstFormat->TexelBytes == 1); + ASSERT(baseInternalFormat == GL_COLOR_INDEX); + + if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + srcFormat == GL_COLOR_INDEX && + srcType == GL_UNSIGNED_BYTE) { + /* simple memcpy path */ + memcpy_texture(ctx, dims, + dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcFormat, srcType, + srcAddr, srcPacking); + } + else { + /* general path */ + GLint img, row; + for (img = 0; img < srcDepth; img++) { + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + const GLvoid *src = _mesa_image_address(dims, srcPacking, + srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, row, 0); + _mesa_unpack_index_span(ctx, srcWidth, GL_UNSIGNED_BYTE, dstRow, + srcType, src, srcPacking, + ctx->_ImageTransferState); + dstRow += dstRowStride; + } + } + } + return GL_TRUE; +} + + +/** + * Texstore for _mesa_texformat_ycbcr or _mesa_texformat_ycbcr_rev. + */ +GLboolean +_mesa_texstore_ycbcr(TEXSTORE_PARAMS) +{ + const GLboolean littleEndian = _mesa_little_endian(); + (void) ctx; (void) dims; (void) baseInternalFormat; + + ASSERT((dstFormat == &_mesa_texformat_ycbcr) || + (dstFormat == &_mesa_texformat_ycbcr_rev)); + ASSERT(dstFormat->TexelBytes == 2); + ASSERT(ctx->Extensions.MESA_ycbcr_texture); + ASSERT(srcFormat == GL_YCBCR_MESA); + ASSERT((srcType == GL_UNSIGNED_SHORT_8_8_MESA) || + (srcType == GL_UNSIGNED_SHORT_8_8_REV_MESA)); + ASSERT(baseInternalFormat == GL_YCBCR_MESA); + + /* always just memcpy since no pixel transfer ops apply */ + memcpy_texture(ctx, dims, + dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcFormat, srcType, + srcAddr, srcPacking); + + /* Check if we need byte swapping */ + /* XXX the logic here _might_ be wrong */ + if (srcPacking->SwapBytes ^ + (srcType == GL_UNSIGNED_SHORT_8_8_REV_MESA) ^ + (dstFormat == &_mesa_texformat_ycbcr_rev) ^ + !littleEndian) { + GLint img, row; + for (img = 0; img < srcDepth; img++) { + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + _mesa_swap2((GLushort *) dstRow, srcWidth); + dstRow += dstRowStride; + } + } + } + return GL_TRUE; +} + + + +/** + * Store a combined depth/stencil texture image. + */ +GLboolean +_mesa_texstore_z24_s8(TEXSTORE_PARAMS) +{ + ASSERT(dstFormat == &_mesa_texformat_z24_s8); + ASSERT(srcFormat == GL_DEPTH_STENCIL_EXT); + ASSERT(srcType == GL_UNSIGNED_INT_24_8_EXT); + + if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes) { + /* simple path */ + memcpy_texture(ctx, dims, + dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcFormat, srcType, + srcAddr, srcPacking); + } + else { + /* general path */ + const GLint srcRowStride + = _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, srcType) + / sizeof(GLuint); + GLint img, row; + + for (img = 0; img < srcDepth; img++) { + GLuint *dstRow = (GLuint *) dstAddr + + dstImageOffsets[dstZoffset + img] + + dstYoffset * dstRowStride / sizeof(GLuint) + + dstXoffset; + const GLuint *src + = (const GLuint *) _mesa_image_address(dims, srcPacking, srcAddr, + srcWidth, srcHeight, + srcFormat, srcType, + img, 0, 0); + for (row = 0; row < srcHeight; row++) { + GLubyte stencil[MAX_WIDTH]; + GLint i; + /* the 24 depth bits will be in the high position: */ + _mesa_unpack_depth_span(ctx, srcWidth, + GL_UNSIGNED_INT, /* dst type */ + dstRow, /* dst addr */ + (GLfloat) 0xffffff, /* depthScale */ + srcType, src, srcPacking); + /* get the 8-bit stencil values */ + _mesa_unpack_stencil_span(ctx, srcWidth, + GL_UNSIGNED_BYTE, /* dst type */ + stencil, /* dst addr */ + srcType, src, srcPacking, + ctx->_ImageTransferState); + /* merge stencil values into depth values */ + for (i = 0; i < srcWidth; i++) + dstRow[i] |= stencil[i]; + + src += srcRowStride; + dstRow += dstRowStride / sizeof(GLuint); + } + } + } + return GL_TRUE; +} + + + +/** + * Store an image in any of the formats: + * _mesa_texformat_rgba_float32 + * _mesa_texformat_rgb_float32 + * _mesa_texformat_alpha_float32 + * _mesa_texformat_luminance_float32 + * _mesa_texformat_luminance_alpha_float32 + * _mesa_texformat_intensity_float32 + */ +GLboolean +_mesa_texstore_rgba_float32(TEXSTORE_PARAMS) +{ + const GLint components = _mesa_components_in_format(dstFormat->BaseFormat); + + ASSERT(dstFormat == &_mesa_texformat_rgba_float32 || + dstFormat == &_mesa_texformat_rgb_float32 || + dstFormat == &_mesa_texformat_alpha_float32 || + dstFormat == &_mesa_texformat_luminance_float32 || + dstFormat == &_mesa_texformat_luminance_alpha_float32 || + dstFormat == &_mesa_texformat_intensity_float32); + ASSERT(baseInternalFormat == GL_RGBA || + baseInternalFormat == GL_RGB || + baseInternalFormat == GL_ALPHA || + baseInternalFormat == GL_LUMINANCE || + baseInternalFormat == GL_LUMINANCE_ALPHA || + baseInternalFormat == GL_INTENSITY); + ASSERT(dstFormat->TexelBytes == components * sizeof(GLfloat)); + + if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + baseInternalFormat == srcFormat && + srcType == GL_FLOAT) { + /* simple memcpy path */ + memcpy_texture(ctx, dims, + dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcFormat, srcType, + srcAddr, srcPacking); + } + else { + /* general path */ + const GLfloat *tempImage = make_temp_float_image(ctx, dims, + baseInternalFormat, + dstFormat->BaseFormat, + srcWidth, srcHeight, srcDepth, + srcFormat, srcType, srcAddr, + srcPacking); + const GLfloat *srcRow = tempImage; + GLint bytesPerRow; + GLint img, row; + if (!tempImage) + return GL_FALSE; + _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight); + bytesPerRow = srcWidth * components * sizeof(GLfloat); + for (img = 0; img < srcDepth; img++) { + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + _mesa_memcpy(dstRow, srcRow, bytesPerRow); + dstRow += dstRowStride; + srcRow += srcWidth * components; + } + } + + _mesa_free((void *) tempImage); + } + return GL_TRUE; +} + + +/** + * As above, but store 16-bit floats. + */ +GLboolean +_mesa_texstore_rgba_float16(TEXSTORE_PARAMS) +{ + const GLint components = _mesa_components_in_format(dstFormat->BaseFormat); + + ASSERT(dstFormat == &_mesa_texformat_rgba_float16 || + dstFormat == &_mesa_texformat_rgb_float16 || + dstFormat == &_mesa_texformat_alpha_float16 || + dstFormat == &_mesa_texformat_luminance_float16 || + dstFormat == &_mesa_texformat_luminance_alpha_float16 || + dstFormat == &_mesa_texformat_intensity_float16); + ASSERT(baseInternalFormat == GL_RGBA || + baseInternalFormat == GL_RGB || + baseInternalFormat == GL_ALPHA || + baseInternalFormat == GL_LUMINANCE || + baseInternalFormat == GL_LUMINANCE_ALPHA || + baseInternalFormat == GL_INTENSITY); + ASSERT(dstFormat->TexelBytes == components * sizeof(GLhalfARB)); + + if (!ctx->_ImageTransferState && + !srcPacking->SwapBytes && + baseInternalFormat == srcFormat && + srcType == GL_HALF_FLOAT_ARB) { + /* simple memcpy path */ + memcpy_texture(ctx, dims, + dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset, + dstRowStride, + dstImageOffsets, + srcWidth, srcHeight, srcDepth, srcFormat, srcType, + srcAddr, srcPacking); + } + else { + /* general path */ + const GLfloat *tempImage = make_temp_float_image(ctx, dims, + baseInternalFormat, + dstFormat->BaseFormat, + srcWidth, srcHeight, srcDepth, + srcFormat, srcType, srcAddr, + srcPacking); + const GLfloat *src = tempImage; + GLint img, row; + if (!tempImage) + return GL_FALSE; + _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight); + for (img = 0; img < srcDepth; img++) { + GLubyte *dstRow = (GLubyte *) dstAddr + + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + + dstYoffset * dstRowStride + + dstXoffset * dstFormat->TexelBytes; + for (row = 0; row < srcHeight; row++) { + GLhalfARB *dstTexel = (GLhalfARB *) dstRow; + GLint i; + for (i = 0; i < srcWidth * components; i++) { + dstTexel[i] = _mesa_float_to_half(src[i]); + } + dstRow += dstRowStride; + src += srcWidth * components; + } + } + + _mesa_free((void *) tempImage); + } + return GL_TRUE; +} + + +#if FEATURE_EXT_texture_sRGB +GLboolean +_mesa_texstore_srgb8(TEXSTORE_PARAMS) +{ + const GLboolean littleEndian = _mesa_little_endian(); + const struct gl_texture_format *newDstFormat; + StoreTexImageFunc store; + GLboolean k; + + ASSERT(dstFormat == &_mesa_texformat_srgb8); + + /* reuse normal rgb texstore code */ + if (littleEndian) { + newDstFormat = &_mesa_texformat_bgr888; + store = _mesa_texstore_bgr888; + } + else { + newDstFormat = &_mesa_texformat_rgb888; + store = _mesa_texstore_rgb888; + } + + k = store(ctx, dims, baseInternalFormat, + newDstFormat, dstAddr, + dstXoffset, dstYoffset, dstZoffset, + dstRowStride, dstImageOffsets, + srcWidth, srcHeight, srcDepth, + srcFormat, srcType, + srcAddr, srcPacking); + return k; +} + + +GLboolean +_mesa_texstore_srgba8(TEXSTORE_PARAMS) +{ + const GLboolean littleEndian = _mesa_little_endian(); + const struct gl_texture_format *newDstFormat; + GLboolean k; + + ASSERT(dstFormat == &_mesa_texformat_srgba8); + + /* reuse normal rgba texstore code */ + if (littleEndian) + newDstFormat = &_mesa_texformat_rgba8888_rev; + else + newDstFormat = &_mesa_texformat_rgba8888; + + k = _mesa_texstore_rgba8888(ctx, dims, baseInternalFormat, + newDstFormat, dstAddr, + dstXoffset, dstYoffset, dstZoffset, + dstRowStride, dstImageOffsets, + srcWidth, srcHeight, srcDepth, + srcFormat, srcType, + srcAddr, srcPacking); + return k; +} + + +GLboolean +_mesa_texstore_sl8(TEXSTORE_PARAMS) +{ + const struct gl_texture_format *newDstFormat; + GLboolean k; + + ASSERT(dstFormat == &_mesa_texformat_sl8); + + newDstFormat = &_mesa_texformat_l8; + + /* _mesa_textore_a8 handles luminance8 too */ + k = _mesa_texstore_a8(ctx, dims, baseInternalFormat, + newDstFormat, dstAddr, + dstXoffset, dstYoffset, dstZoffset, + dstRowStride, dstImageOffsets, + srcWidth, srcHeight, srcDepth, + srcFormat, srcType, + srcAddr, srcPacking); + return k; +} + + +GLboolean +_mesa_texstore_sla8(TEXSTORE_PARAMS) +{ + const GLboolean littleEndian = _mesa_little_endian(); + const struct gl_texture_format *newDstFormat; + GLboolean k; + + ASSERT(dstFormat == &_mesa_texformat_sla8); + + /* reuse normal luminance/alpha texstore code */ + if (littleEndian) + newDstFormat = &_mesa_texformat_al88; + else + newDstFormat = &_mesa_texformat_al88_rev; + + k = _mesa_texstore_al88(ctx, dims, baseInternalFormat, + newDstFormat, dstAddr, + dstXoffset, dstYoffset, dstZoffset, + dstRowStride, dstImageOffsets, + srcWidth, srcHeight, srcDepth, + srcFormat, srcType, + srcAddr, srcPacking); + return k; +} + +#endif /* FEATURE_EXT_texture_sRGB */ + + +/** + * Check if an unpack PBO is active prior to fetching a texture image. + * If so, do bounds checking and map the buffer into main memory. + * Any errors detected will be recorded. + * The caller _must_ call _mesa_unmap_teximage_pbo() too! + */ +const GLvoid * +_mesa_validate_pbo_teximage(GLcontext *ctx, GLuint dimensions, + GLsizei width, GLsizei height, GLsizei depth, + GLenum format, GLenum type, const GLvoid *pixels, + const struct gl_pixelstore_attrib *unpack, + const char *funcName) +{ + GLubyte *buf; + + if (unpack->BufferObj->Name == 0) { + /* no PBO */ + return pixels; + } + if (!_mesa_validate_pbo_access(dimensions, unpack, width, height, depth, + format, type, pixels)) { + _mesa_error(ctx, GL_INVALID_OPERATION, funcName, "(invalid PBO access"); + return NULL; + } + + buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, + GL_READ_ONLY_ARB, unpack->BufferObj); + if (!buf) { + _mesa_error(ctx, GL_INVALID_OPERATION, funcName, "(PBO is mapped"); + return NULL; + } + + return ADD_POINTERS(buf, pixels); +} + + +/** + * Check if an unpack PBO is active prior to fetching a compressed texture + * image. + * If so, do bounds checking and map the buffer into main memory. + * Any errors detected will be recorded. + * The caller _must_ call _mesa_unmap_teximage_pbo() too! + */ +const GLvoid * +_mesa_validate_pbo_compressed_teximage(GLcontext *ctx, + GLsizei imageSize, const GLvoid *pixels, + const struct gl_pixelstore_attrib *packing, + const char *funcName) +{ + GLubyte *buf; + + if (packing->BufferObj->Name == 0) { + /* not using a PBO - return pointer unchanged */ + return pixels; + } + if ((const GLubyte *) pixels + imageSize > + ((const GLubyte *) 0) + packing->BufferObj->Size) { + /* out of bounds read! */ + _mesa_error(ctx, GL_INVALID_OPERATION, funcName, "(invalid PBO access"); + return NULL; + } + + buf = (GLubyte*) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, + GL_READ_ONLY_ARB, packing->BufferObj); + if (!buf) { + _mesa_error(ctx, GL_INVALID_OPERATION, funcName, "(PBO is mapped"); + return NULL; + } + + return ADD_POINTERS(buf, pixels); +} + + +/** + * This function must be called after either of the validate_pbo_*_teximage() + * functions. It unmaps the PBO buffer if it was mapped earlier. + */ +void +_mesa_unmap_teximage_pbo(GLcontext *ctx, + const struct gl_pixelstore_attrib *unpack) +{ + if (unpack->BufferObj->Name) { + ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, + unpack->BufferObj); + } +} + + + +/** + * Adaptor for fetching a GLchan texel from a float-valued texture. + */ +static void +fetch_texel_float_to_chan(const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texelOut) +{ + GLfloat temp[4]; + ASSERT(texImage->FetchTexelf); + texImage->FetchTexelf(texImage, i, j, k, temp); + if (texImage->TexFormat->BaseFormat == GL_DEPTH_COMPONENT || + texImage->TexFormat->BaseFormat == GL_DEPTH_STENCIL_EXT) { + /* just one channel */ + UNCLAMPED_FLOAT_TO_CHAN(texelOut[0], temp[0]); + } + else { + /* four channels */ + UNCLAMPED_FLOAT_TO_CHAN(texelOut[0], temp[0]); + UNCLAMPED_FLOAT_TO_CHAN(texelOut[1], temp[1]); + UNCLAMPED_FLOAT_TO_CHAN(texelOut[2], temp[2]); + UNCLAMPED_FLOAT_TO_CHAN(texelOut[3], temp[3]); + } +} + + +/** + * Adaptor for fetching a float texel from a GLchan-valued texture. + */ +static void +fetch_texel_chan_to_float(const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texelOut) +{ + GLchan temp[4]; + ASSERT(texImage->FetchTexelc); + texImage->FetchTexelc(texImage, i, j, k, temp); + if (texImage->TexFormat->BaseFormat == GL_DEPTH_COMPONENT || + texImage->TexFormat->BaseFormat == GL_DEPTH_STENCIL_EXT) { + /* just one channel */ + texelOut[0] = CHAN_TO_FLOAT(temp[0]); + } + else { + /* four channels */ + texelOut[0] = CHAN_TO_FLOAT(temp[0]); + texelOut[1] = CHAN_TO_FLOAT(temp[1]); + texelOut[2] = CHAN_TO_FLOAT(temp[2]); + texelOut[3] = CHAN_TO_FLOAT(temp[3]); + } +} + + +/** + * Initialize the texture image's FetchTexelc and FetchTexelf methods. + */ +static void +set_fetch_functions(struct gl_texture_image *texImage, GLuint dims) +{ + ASSERT(dims == 1 || dims == 2 || dims == 3); + ASSERT(texImage->TexFormat); + + switch (dims) { + case 1: + texImage->FetchTexelc = texImage->TexFormat->FetchTexel1D; + texImage->FetchTexelf = texImage->TexFormat->FetchTexel1Df; + break; + case 2: + texImage->FetchTexelc = texImage->TexFormat->FetchTexel2D; + texImage->FetchTexelf = texImage->TexFormat->FetchTexel2Df; + break; + case 3: + texImage->FetchTexelc = texImage->TexFormat->FetchTexel3D; + texImage->FetchTexelf = texImage->TexFormat->FetchTexel3Df; + break; + default: + ; + } + + /* now check if we need to use a float/chan adaptor */ + if (!texImage->FetchTexelc) { + texImage->FetchTexelc = fetch_texel_float_to_chan; + } + else if (!texImage->FetchTexelf) { + texImage->FetchTexelf = fetch_texel_chan_to_float; + } + + + ASSERT(texImage->FetchTexelc); + ASSERT(texImage->FetchTexelf); +} + + +/** + * Choose the actual storage format for a new texture image. + * Mainly, this is a wrapper for the driver's ChooseTextureFormat() function. + * Also set some other texImage fields related to texture compression, etc. + * \param ctx rendering context + * \param texImage the gl_texture_image + * \param dims texture dimensions (1, 2 or 3) + * \param format the user-specified format parameter + * \param type the user-specified type parameter + * \param internalFormat the user-specified internal format hint + */ +static void +choose_texture_format(GLcontext *ctx, struct gl_texture_image *texImage, + GLuint dims, + GLenum format, GLenum type, GLint internalFormat) +{ + ASSERT(dims == 1 || dims == 2 || dims == 3); + ASSERT(ctx->Driver.ChooseTextureFormat); + + texImage->TexFormat + = ctx->Driver.ChooseTextureFormat(ctx, internalFormat, format, type); + + ASSERT(texImage->TexFormat); + + set_fetch_functions(texImage, dims); + + if (texImage->TexFormat->TexelBytes == 0) { + /* must be a compressed format */ + texImage->IsCompressed = GL_TRUE; + texImage->CompressedSize = + ctx->Driver.CompressedTextureSize(ctx, texImage->Width, + texImage->Height, texImage->Depth, + texImage->TexFormat->MesaFormat); + } + else { + /* non-compressed format */ + texImage->IsCompressed = GL_FALSE; + texImage->CompressedSize = 0; + } +} + + + +/* + * This is the software fallback for Driver.TexImage1D() + * and Driver.CopyTexImage1D(). + * \sa _mesa_store_teximage2d() + */ +void +_mesa_store_teximage1d(GLcontext *ctx, GLenum target, GLint level, + GLint internalFormat, + GLint width, GLint border, + GLenum format, GLenum type, const GLvoid *pixels, + const struct gl_pixelstore_attrib *packing, + struct gl_texture_object *texObj, + struct gl_texture_image *texImage) +{ + GLint postConvWidth = width; + GLint sizeInBytes; + (void) border; + + if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) { + _mesa_adjust_image_for_convolution(ctx, 1, &postConvWidth, NULL); + } + + choose_texture_format(ctx, texImage, 1, format, type, internalFormat); + + /* allocate memory */ + if (texImage->IsCompressed) + sizeInBytes = texImage->CompressedSize; + else + sizeInBytes = postConvWidth * texImage->TexFormat->TexelBytes; + texImage->Data = _mesa_alloc_texmemory(sizeInBytes); + if (!texImage->Data) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage1D"); + return; + } + + pixels = _mesa_validate_pbo_teximage(ctx, 1, width, 1, 1, format, type, + pixels, packing, "glTexImage1D"); + if (!pixels) { + /* Note: we check for a NULL image pointer here, _after_ we allocated + * memory for the texture. That's what the GL spec calls for. + */ + return; + } + else { + const GLint dstRowStride = 0; + GLboolean success; + ASSERT(texImage->TexFormat->StoreImage); + success = texImage->TexFormat->StoreImage(ctx, 1, texImage->_BaseFormat, + texImage->TexFormat, + texImage->Data, + 0, 0, 0, /* dstX/Y/Zoffset */ + dstRowStride, + texImage->ImageOffsets, + width, 1, 1, + format, type, pixels, packing); + if (!success) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage1D"); + } + } + + /* GL_SGIS_generate_mipmap */ + if (level == texObj->BaseLevel && texObj->GenerateMipmap) { + _mesa_generate_mipmap(ctx, target, + &ctx->Texture.Unit[ctx->Texture.CurrentUnit], + texObj); + } + + _mesa_unmap_teximage_pbo(ctx, packing); +} + + +/** + * This is the software fallback for Driver.TexImage2D() + * and Driver.CopyTexImage2D(). + * + * This function is oriented toward storing images in main memory, rather + * than VRAM. Device driver's can easily plug in their own replacement. + * + * Note: width and height may be pre-convolved dimensions, but + * texImage->Width and texImage->Height will be post-convolved dimensions. + */ +void +_mesa_store_teximage2d(GLcontext *ctx, GLenum target, GLint level, + GLint internalFormat, + GLint width, GLint height, GLint border, + GLenum format, GLenum type, const void *pixels, + const struct gl_pixelstore_attrib *packing, + struct gl_texture_object *texObj, + struct gl_texture_image *texImage) +{ + GLint postConvWidth = width, postConvHeight = height; + GLint texelBytes, sizeInBytes; + (void) border; + + if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) { + _mesa_adjust_image_for_convolution(ctx, 2, &postConvWidth, + &postConvHeight); + } + + choose_texture_format(ctx, texImage, 2, format, type, internalFormat); + + texelBytes = texImage->TexFormat->TexelBytes; + + /* allocate memory */ + if (texImage->IsCompressed) + sizeInBytes = texImage->CompressedSize; + else + sizeInBytes = postConvWidth * postConvHeight * texelBytes; + texImage->Data = _mesa_alloc_texmemory(sizeInBytes); + if (!texImage->Data) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage2D"); + return; + } + + pixels = _mesa_validate_pbo_teximage(ctx, 2, width, height, 1, format, type, + pixels, packing, "glTexImage2D"); + if (!pixels) { + /* Note: we check for a NULL image pointer here, _after_ we allocated + * memory for the texture. That's what the GL spec calls for. + */ + return; + } + else { + GLint dstRowStride; + GLboolean success; + if (texImage->IsCompressed) { + dstRowStride + = _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, width); + } + else { + dstRowStride = texImage->RowStride * texImage->TexFormat->TexelBytes; + } + ASSERT(texImage->TexFormat->StoreImage); + success = texImage->TexFormat->StoreImage(ctx, 2, texImage->_BaseFormat, + texImage->TexFormat, + texImage->Data, + 0, 0, 0, /* dstX/Y/Zoffset */ + dstRowStride, + texImage->ImageOffsets, + width, height, 1, + format, type, pixels, packing); + if (!success) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage2D"); + } + } + + /* GL_SGIS_generate_mipmap */ + if (level == texObj->BaseLevel && texObj->GenerateMipmap) { + _mesa_generate_mipmap(ctx, target, + &ctx->Texture.Unit[ctx->Texture.CurrentUnit], + texObj); + } + + _mesa_unmap_teximage_pbo(ctx, packing); +} + + + +/** + * This is the software fallback for Driver.TexImage3D() + * and Driver.CopyTexImage3D(). + * \sa _mesa_store_teximage2d() + */ +void +_mesa_store_teximage3d(GLcontext *ctx, GLenum target, GLint level, + GLint internalFormat, + GLint width, GLint height, GLint depth, GLint border, + GLenum format, GLenum type, const void *pixels, + const struct gl_pixelstore_attrib *packing, + struct gl_texture_object *texObj, + struct gl_texture_image *texImage) +{ + GLint texelBytes, sizeInBytes; + (void) border; + + choose_texture_format(ctx, texImage, 3, format, type, internalFormat); + + texelBytes = texImage->TexFormat->TexelBytes; + + /* allocate memory */ + if (texImage->IsCompressed) + sizeInBytes = texImage->CompressedSize; + else + sizeInBytes = width * height * depth * texelBytes; + texImage->Data = _mesa_alloc_texmemory(sizeInBytes); + if (!texImage->Data) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage3D"); + return; + } + + pixels = _mesa_validate_pbo_teximage(ctx, 3, width, height, depth, format, + type, pixels, packing, "glTexImage3D"); + if (!pixels) { + /* Note: we check for a NULL image pointer here, _after_ we allocated + * memory for the texture. That's what the GL spec calls for. + */ + return; + } + else { + GLint dstRowStride; + GLboolean success; + if (texImage->IsCompressed) { + dstRowStride + = _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, width); + } + else { + dstRowStride = texImage->RowStride * texImage->TexFormat->TexelBytes; + } + ASSERT(texImage->TexFormat->StoreImage); + success = texImage->TexFormat->StoreImage(ctx, 3, texImage->_BaseFormat, + texImage->TexFormat, + texImage->Data, + 0, 0, 0, /* dstX/Y/Zoffset */ + dstRowStride, + texImage->ImageOffsets, + width, height, depth, + format, type, pixels, packing); + if (!success) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage3D"); + } + } + + /* GL_SGIS_generate_mipmap */ + if (level == texObj->BaseLevel && texObj->GenerateMipmap) { + _mesa_generate_mipmap(ctx, target, + &ctx->Texture.Unit[ctx->Texture.CurrentUnit], + texObj); + } + + _mesa_unmap_teximage_pbo(ctx, packing); +} + + + + +/* + * This is the software fallback for Driver.TexSubImage1D() + * and Driver.CopyTexSubImage1D(). + */ +void +_mesa_store_texsubimage1d(GLcontext *ctx, GLenum target, GLint level, + GLint xoffset, GLint width, + GLenum format, GLenum type, const void *pixels, + const struct gl_pixelstore_attrib *packing, + struct gl_texture_object *texObj, + struct gl_texture_image *texImage) +{ + /* get pointer to src pixels (may be in a pbo which we'll map here) */ + pixels = _mesa_validate_pbo_teximage(ctx, 1, width, 1, 1, format, type, + pixels, packing, "glTexSubImage1D"); + if (!pixels) + return; + + { + const GLint dstRowStride = 0; + GLboolean success; + ASSERT(texImage->TexFormat->StoreImage); + success = texImage->TexFormat->StoreImage(ctx, 1, texImage->_BaseFormat, + texImage->TexFormat, + texImage->Data, + xoffset, 0, 0, /* offsets */ + dstRowStride, + texImage->ImageOffsets, + width, 1, 1, + format, type, pixels, packing); + if (!success) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexSubImage1D"); + } + } + + /* GL_SGIS_generate_mipmap */ + if (level == texObj->BaseLevel && texObj->GenerateMipmap) { + _mesa_generate_mipmap(ctx, target, + &ctx->Texture.Unit[ctx->Texture.CurrentUnit], + texObj); + } + + _mesa_unmap_teximage_pbo(ctx, packing); +} + + + +/** + * This is the software fallback for Driver.TexSubImage2D() + * and Driver.CopyTexSubImage2D(). + */ +void +_mesa_store_texsubimage2d(GLcontext *ctx, GLenum target, GLint level, + GLint xoffset, GLint yoffset, + GLint width, GLint height, + GLenum format, GLenum type, const void *pixels, + const struct gl_pixelstore_attrib *packing, + struct gl_texture_object *texObj, + struct gl_texture_image *texImage) +{ + /* get pointer to src pixels (may be in a pbo which we'll map here) */ + pixels = _mesa_validate_pbo_teximage(ctx, 2, width, height, 1, format, type, + pixels, packing, "glTexSubImage2D"); + if (!pixels) + return; + + { + GLint dstRowStride = 0; + GLboolean success; + if (texImage->IsCompressed) { + dstRowStride = _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, + texImage->Width); + } + else { + dstRowStride = texImage->RowStride * texImage->TexFormat->TexelBytes; + } + ASSERT(texImage->TexFormat->StoreImage); + success = texImage->TexFormat->StoreImage(ctx, 2, texImage->_BaseFormat, + texImage->TexFormat, + texImage->Data, + xoffset, yoffset, 0, + dstRowStride, + texImage->ImageOffsets, + width, height, 1, + format, type, pixels, packing); + if (!success) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexSubImage2D"); + } + } + + /* GL_SGIS_generate_mipmap */ + if (level == texObj->BaseLevel && texObj->GenerateMipmap) { + _mesa_generate_mipmap(ctx, target, + &ctx->Texture.Unit[ctx->Texture.CurrentUnit], + texObj); + } + + _mesa_unmap_teximage_pbo(ctx, packing); +} + + +/* + * This is the software fallback for Driver.TexSubImage3D(). + * and Driver.CopyTexSubImage3D(). + */ +void +_mesa_store_texsubimage3d(GLcontext *ctx, GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLint width, GLint height, GLint depth, + GLenum format, GLenum type, const void *pixels, + const struct gl_pixelstore_attrib *packing, + struct gl_texture_object *texObj, + struct gl_texture_image *texImage) +{ + /* get pointer to src pixels (may be in a pbo which we'll map here) */ + pixels = _mesa_validate_pbo_teximage(ctx, 3, width, height, depth, format, + type, pixels, packing, + "glTexSubImage3D"); + if (!pixels) + return; + + { + GLint dstRowStride; + GLboolean success; + if (texImage->IsCompressed) { + dstRowStride = _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, + texImage->Width); + } + else { + dstRowStride = texImage->RowStride * texImage->TexFormat->TexelBytes; + } + ASSERT(texImage->TexFormat->StoreImage); + success = texImage->TexFormat->StoreImage(ctx, 3, texImage->_BaseFormat, + texImage->TexFormat, + texImage->Data, + xoffset, yoffset, zoffset, + dstRowStride, + texImage->ImageOffsets, + width, height, depth, + format, type, pixels, packing); + if (!success) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexSubImage3D"); + } + } + + /* GL_SGIS_generate_mipmap */ + if (level == texObj->BaseLevel && texObj->GenerateMipmap) { + _mesa_generate_mipmap(ctx, target, + &ctx->Texture.Unit[ctx->Texture.CurrentUnit], + texObj); + } + + _mesa_unmap_teximage_pbo(ctx, packing); +} + + +/* + * Fallback for Driver.CompressedTexImage1D() + */ +void +_mesa_store_compressed_teximage1d(GLcontext *ctx, GLenum target, GLint level, + GLint internalFormat, + GLint width, GLint border, + GLsizei imageSize, const GLvoid *data, + struct gl_texture_object *texObj, + struct gl_texture_image *texImage) +{ + /* this space intentionally left blank */ + (void) ctx; + (void) target; (void) level; + (void) internalFormat; + (void) width; (void) border; + (void) imageSize; (void) data; + (void) texObj; + (void) texImage; +} + + + +/** + * Fallback for Driver.CompressedTexImage2D() + */ +void +_mesa_store_compressed_teximage2d(GLcontext *ctx, GLenum target, GLint level, + GLint internalFormat, + GLint width, GLint height, GLint border, + GLsizei imageSize, const GLvoid *data, + struct gl_texture_object *texObj, + struct gl_texture_image *texImage) +{ + (void) width; (void) height; (void) border; + + /* This is pretty simple, basically just do a memcpy without worrying + * about the usual image unpacking or image transfer operations. + */ + ASSERT(texObj); + ASSERT(texImage); + ASSERT(texImage->Width > 0); + ASSERT(texImage->Height > 0); + ASSERT(texImage->Depth == 1); + ASSERT(texImage->Data == NULL); /* was freed in glCompressedTexImage2DARB */ + + choose_texture_format(ctx, texImage, 2, 0, 0, internalFormat); + + /* allocate storage */ + texImage->Data = _mesa_alloc_texmemory(imageSize); + if (!texImage->Data) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage2DARB"); + return; + } + + data = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, data, + &ctx->Unpack, + "glCompressedTexImage2D"); + if (!data) + return; + + /* copy the data */ + ASSERT(texImage->CompressedSize == (GLuint) imageSize); + MEMCPY(texImage->Data, data, imageSize); + + /* GL_SGIS_generate_mipmap */ + if (level == texObj->BaseLevel && texObj->GenerateMipmap) { + _mesa_generate_mipmap(ctx, target, + &ctx->Texture.Unit[ctx->Texture.CurrentUnit], + texObj); + } + + _mesa_unmap_teximage_pbo(ctx, &ctx->Unpack); +} + + + +/* + * Fallback for Driver.CompressedTexImage3D() + */ +void +_mesa_store_compressed_teximage3d(GLcontext *ctx, GLenum target, GLint level, + GLint internalFormat, + GLint width, GLint height, GLint depth, + GLint border, + GLsizei imageSize, const GLvoid *data, + struct gl_texture_object *texObj, + struct gl_texture_image *texImage) +{ + /* this space intentionally left blank */ + (void) ctx; + (void) target; (void) level; + (void) internalFormat; + (void) width; (void) height; (void) depth; + (void) border; + (void) imageSize; (void) data; + (void) texObj; + (void) texImage; +} + + + +/** + * Fallback for Driver.CompressedTexSubImage1D() + */ +void +_mesa_store_compressed_texsubimage1d(GLcontext *ctx, GLenum target, + GLint level, + GLint xoffset, GLsizei width, + GLenum format, + GLsizei imageSize, const GLvoid *data, + struct gl_texture_object *texObj, + struct gl_texture_image *texImage) +{ + /* there are no compressed 1D texture formats yet */ + (void) ctx; + (void) target; (void) level; + (void) xoffset; (void) width; + (void) format; + (void) imageSize; (void) data; + (void) texObj; + (void) texImage; +} + + +/** + * Fallback for Driver.CompressedTexSubImage2D() + */ +void +_mesa_store_compressed_texsubimage2d(GLcontext *ctx, GLenum target, + GLint level, + GLint xoffset, GLint yoffset, + GLsizei width, GLsizei height, + GLenum format, + GLsizei imageSize, const GLvoid *data, + struct gl_texture_object *texObj, + struct gl_texture_image *texImage) +{ + GLint bytesPerRow, destRowStride, srcRowStride; + GLint i, rows; + GLubyte *dest; + const GLubyte *src; + const GLuint mesaFormat = texImage->TexFormat->MesaFormat; + + (void) format; + + /* these should have been caught sooner */ + ASSERT((width & 3) == 0 || width == 2 || width == 1); + ASSERT((height & 3) == 0 || height == 2 || height == 1); + ASSERT((xoffset & 3) == 0); + ASSERT((yoffset & 3) == 0); + + /* get pointer to src pixels (may be in a pbo which we'll map here) */ + data = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, data, + &ctx->Unpack, + "glCompressedTexSubImage2D"); + if (!data) + return; + + srcRowStride = _mesa_compressed_row_stride(mesaFormat, width); + src = (const GLubyte *) data; + + destRowStride = _mesa_compressed_row_stride(mesaFormat, texImage->Width); + dest = _mesa_compressed_image_address(xoffset, yoffset, 0, + texImage->TexFormat->MesaFormat, + texImage->Width, + (GLubyte *) texImage->Data); + + bytesPerRow = srcRowStride; + rows = height / 4; + + for (i = 0; i < rows; i++) { + MEMCPY(dest, src, bytesPerRow); + dest += destRowStride; + src += srcRowStride; + } + + /* GL_SGIS_generate_mipmap */ + if (level == texObj->BaseLevel && texObj->GenerateMipmap) { + _mesa_generate_mipmap(ctx, target, + &ctx->Texture.Unit[ctx->Texture.CurrentUnit], + texObj); + } + + _mesa_unmap_teximage_pbo(ctx, &ctx->Unpack); +} + + +/** + * Fallback for Driver.CompressedTexSubImage3D() + */ +void +_mesa_store_compressed_texsubimage3d(GLcontext *ctx, GLenum target, + GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, GLsizei depth, + GLenum format, + GLsizei imageSize, const GLvoid *data, + struct gl_texture_object *texObj, + struct gl_texture_image *texImage) +{ + /* there are no compressed 3D texture formats yet */ + (void) ctx; + (void) target; (void) level; + (void) xoffset; (void) yoffset; (void) zoffset; + (void) width; (void) height; (void) depth; + (void) format; + (void) imageSize; (void) data; + (void) texObj; + (void) texImage; +} + + + + +#if FEATURE_EXT_texture_sRGB + +/** + * Test if given texture image is an sRGB format. + */ +static GLboolean +is_srgb_teximage(const struct gl_texture_image *texImage) +{ + switch (texImage->TexFormat->MesaFormat) { + case MESA_FORMAT_SRGB8: + case MESA_FORMAT_SRGBA8: + case MESA_FORMAT_SL8: + case MESA_FORMAT_SLA8: + return GL_TRUE; + default: + return GL_FALSE; + } +} + +#endif /* FEATURE_EXT_texture_sRGB */ + + +/** + * This is the software fallback for Driver.GetTexImage(). + * All error checking will have been done before this routine is called. + */ +void +_mesa_get_teximage(GLcontext *ctx, GLenum target, GLint level, + GLenum format, GLenum type, GLvoid *pixels, + struct gl_texture_object *texObj, + struct gl_texture_image *texImage) +{ + const GLuint dimensions = (target == GL_TEXTURE_3D) ? 3 : 2; + + if (ctx->Pack.BufferObj->Name) { + /* 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) { + /* buffer is already mapped - that's an error */ + _mesa_error(ctx, GL_INVALID_OPERATION,"glGetTexImage(PBO is mapped)"); + 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); + } + else if (!pixels) { + /* not an error */ + return; + } + + { + const GLint width = texImage->Width; + const GLint height = texImage->Height; + const GLint depth = texImage->Depth; + GLint img, row; + for (img = 0; img < depth; img++) { + for (row = 0; row < height; row++) { + /* compute destination address in client memory */ + GLvoid *dest = _mesa_image_address( dimensions, &ctx->Pack, pixels, + width, height, format, type, + img, row, 0); + assert(dest); + + if (format == GL_COLOR_INDEX) { + GLuint indexRow[MAX_WIDTH]; + GLint col; + /* Can't use FetchTexel here because that returns RGBA */ + if (texImage->TexFormat->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 (texImage->TexFormat->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, + 0 /* no image transfer */); + } + else if (format == GL_DEPTH_COMPONENT) { + GLfloat depthRow[MAX_WIDTH]; + GLint col; + 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); + } + else if (format == GL_DEPTH_STENCIL_EXT) { + /* XXX Note: we're bypassing texImage->FetchTexel()! */ + const GLuint *src = (const GLuint *) texImage->Data; + src += width * row + width * height * img; + _mesa_memcpy(dest, src, width * sizeof(GLuint)); + if (ctx->Pack.SwapBytes) { + _mesa_swap4((GLuint *) dest, width); + } + } + else if (format == GL_YCBCR_MESA) { + /* No pixel transfer */ + const GLint rowstride = texImage->RowStride; + MEMCPY(dest, + (const GLushort *) texImage->Data + row * rowstride, + width * sizeof(GLushort)); + /* check for byte swapping */ + if ((texImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR + && type == GL_UNSIGNED_SHORT_8_8_REV_MESA) || + (texImage->TexFormat->MesaFormat == 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); + } + } +#if FEATURE_EXT_texture_sRGB + else if (is_srgb_teximage(texImage)) { + /* no pixel transfer and no non-linear to linear conversion */ + const GLint comps = texImage->TexFormat->TexelBytes; + const GLint rowstride = comps * texImage->RowStride; + MEMCPY(dest, + (const GLubyte *) texImage->Data + row * rowstride, + comps * width * sizeof(GLubyte)); + } +#endif /* FEATURE_EXT_texture_sRGB */ + else { + /* general case: convert row to RGBA format */ + GLfloat rgba[MAX_WIDTH][4]; + GLint col; + for (col = 0; col < width; col++) { + (*texImage->FetchTexelf)(texImage, col, row, img, rgba[col]); + } + _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba, + format, type, dest, + &ctx->Pack, 0x0 /*image xfer ops*/); + } /* format */ + } /* row */ + } /* img */ + } + + if (ctx->Pack.BufferObj->Name) { + 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(GLcontext *ctx, GLenum target, GLint level, + GLvoid *img, + const struct gl_texture_object *texObj, + const struct gl_texture_image *texImage) +{ + GLuint size; + + if (ctx->Pack.BufferObj->Name) { + /* pack texture image into a PBO */ + GLubyte *buf; + if ((const GLubyte *) img + texImage->CompressedSize > + (const GLubyte *) ctx->Pack.BufferObj->Size) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetCompressedTexImage(invalid PBO access)"); + return; + } + buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, + GL_WRITE_ONLY_ARB, + ctx->Pack.BufferObj); + if (!buf) { + /* buffer is already mapped - that's an error */ + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetCompressedTexImage(PBO is mapped)"); + return; + } + img = ADD_POINTERS(buf, img); + } + else if (!img) { + /* not an error */ + return; + } + + /* don't use texImage->CompressedSize since that may be padded out */ + size = _mesa_compressed_texture_size(ctx, texImage->Width, texImage->Height, + texImage->Depth, + texImage->TexFormat->MesaFormat); + + /* just memcpy, no pixelstore or pixel transfer */ + _mesa_memcpy(img, texImage->Data, size); + + if (ctx->Pack.BufferObj->Name) { + ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, + ctx->Pack.BufferObj); + } +} |