#include "pbo.h"
#include "texcompress.h"
#include "texgetimage.h"
-#include "texfetch.h"
#include "teximage.h"
/**
* Can the given type represent negative values?
*/
-static INLINE GLboolean
-type_with_negative_values(GLenum type)
+static inline GLboolean
+type_needs_clamping(GLenum type)
{
switch (type) {
case GL_BYTE:
case GL_INT:
case GL_FLOAT:
case GL_HALF_FLOAT_ARB:
- return GL_TRUE;
- default:
+ case GL_UNSIGNED_INT_10F_11F_11F_REV:
+ case GL_UNSIGNED_INT_5_9_9_9_REV:
return GL_FALSE;
+ default:
+ return GL_TRUE;
}
}
static void
get_tex_depth(struct gl_context *ctx, GLuint dimensions,
GLenum format, GLenum type, GLvoid *pixels,
- const struct gl_texture_image *texImage)
+ struct gl_texture_image *texImage)
{
const GLint width = texImage->Width;
const GLint height = texImage->Height;
const GLint depth = texImage->Depth;
- GLint img, row, col;
+ GLint img, row;
GLfloat *depthRow = (GLfloat *) malloc(width * sizeof(GLfloat));
if (!depthRow) {
}
for (img = 0; img < depth; img++) {
- for (row = 0; row < height; row++) {
- void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
- width, height, format, type,
- img, row, 0);
- assert(dest);
-
- for (col = 0; col < width; col++) {
- texImage->FetchTexelf(texImage, col, row, img, depthRow + col);
+ GLubyte *srcMap;
+ GLint srcRowStride;
+
+ /* map src texture buffer */
+ ctx->Driver.MapTextureImage(ctx, texImage, img,
+ 0, 0, width, height, GL_MAP_READ_BIT,
+ &srcMap, &srcRowStride);
+
+ if (srcMap) {
+ for (row = 0; row < height; row++) {
+ void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
+ width, height, format, type,
+ img, row, 0);
+ const GLubyte *src = srcMap + row * srcRowStride;
+ _mesa_unpack_float_z_row(texImage->TexFormat, width, src, depthRow);
+ _mesa_pack_depth_span(ctx, width, dest, type, depthRow, &ctx->Pack);
}
- _mesa_pack_depth_span(ctx, width, dest, type, depthRow, &ctx->Pack);
+
+ ctx->Driver.UnmapTextureImage(ctx, texImage, img);
+ }
+ else {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
+ break;
}
}
static void
get_tex_depth_stencil(struct gl_context *ctx, GLuint dimensions,
GLenum format, GLenum type, GLvoid *pixels,
- const struct gl_texture_image *texImage)
+ struct gl_texture_image *texImage)
{
const GLint width = texImage->Width;
const GLint height = texImage->Height;
const GLint depth = texImage->Depth;
- const GLint rowstride = texImage->RowStride;
- const GLuint *src = (const GLuint *) texImage->Data;
GLint img, row;
for (img = 0; img < depth; img++) {
- for (row = 0; row < height; row++) {
- void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
- width, height, format, type,
- img, row, 0);
- memcpy(dest, src, width * sizeof(GLuint));
- if (ctx->Pack.SwapBytes) {
- _mesa_swap4((GLuint *) dest, width);
+ GLubyte *srcMap;
+ GLint rowstride;
+
+ /* map src texture buffer */
+ ctx->Driver.MapTextureImage(ctx, texImage, img,
+ 0, 0, width, height, GL_MAP_READ_BIT,
+ &srcMap, &rowstride);
+
+ if (srcMap) {
+ for (row = 0; row < height; row++) {
+ const GLubyte *src = srcMap + row * rowstride;
+ void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
+ width, height, format, type,
+ img, row, 0);
+ /* XXX Z24_S8 vs. S8_Z24??? */
+ memcpy(dest, src, width * sizeof(GLuint));
+ if (ctx->Pack.SwapBytes) {
+ _mesa_swap4((GLuint *) dest, width);
+ }
}
- src += rowstride;
+ ctx->Driver.UnmapTextureImage(ctx, texImage, img);
+ }
+ else {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
+ break;
}
}
}
static void
get_tex_ycbcr(struct gl_context *ctx, GLuint dimensions,
GLenum format, GLenum type, GLvoid *pixels,
- const struct gl_texture_image *texImage)
+ struct gl_texture_image *texImage)
{
const GLint width = texImage->Width;
const GLint height = texImage->Height;
const GLint depth = texImage->Depth;
- const GLint rowstride = texImage->RowStride;
- const GLushort *src = (const GLushort *) texImage->Data;
GLint img, row;
for (img = 0; img < depth; img++) {
- for (row = 0; row < height; row++) {
- void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
- width, height, format, type,
- img, row, 0);
- memcpy(dest, src, width * sizeof(GLushort));
-
- /* check for byte swapping */
- if ((texImage->TexFormat == MESA_FORMAT_YCBCR
- && type == GL_UNSIGNED_SHORT_8_8_REV_MESA) ||
- (texImage->TexFormat == MESA_FORMAT_YCBCR_REV
- && type == GL_UNSIGNED_SHORT_8_8_MESA)) {
- if (!ctx->Pack.SwapBytes)
+ GLubyte *srcMap;
+ GLint rowstride;
+
+ /* map src texture buffer */
+ ctx->Driver.MapTextureImage(ctx, texImage, img,
+ 0, 0, width, height, GL_MAP_READ_BIT,
+ &srcMap, &rowstride);
+
+ if (srcMap) {
+ for (row = 0; row < height; row++) {
+ const GLubyte *src = srcMap + row * rowstride;
+ void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
+ width, height, format, type,
+ img, row, 0);
+ memcpy(dest, src, width * sizeof(GLushort));
+
+ /* check for byte swapping */
+ if ((texImage->TexFormat == MESA_FORMAT_YCBCR
+ && type == GL_UNSIGNED_SHORT_8_8_REV_MESA) ||
+ (texImage->TexFormat == MESA_FORMAT_YCBCR_REV
+ && type == GL_UNSIGNED_SHORT_8_8_MESA)) {
+ if (!ctx->Pack.SwapBytes)
+ _mesa_swap2((GLushort *) dest, width);
+ }
+ else if (ctx->Pack.SwapBytes) {
_mesa_swap2((GLushort *) dest, width);
- }
- else if (ctx->Pack.SwapBytes) {
- _mesa_swap2((GLushort *) dest, width);
+ }
}
- src += rowstride;
+ ctx->Driver.UnmapTextureImage(ctx, texImage, img);
+ }
+ else {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
+ break;
}
}
}
/**
- * glGetTexImage for color formats (RGBA, RGB, alpha, LA, etc).
- * Compressed textures are handled here as well.
+ * Get a color texture image with decompression.
*/
static void
-get_tex_rgba(struct gl_context *ctx, GLuint dimensions,
- GLenum format, GLenum type, GLvoid *pixels,
- struct gl_texture_image *texImage)
+get_tex_rgba_compressed(struct gl_context *ctx, GLuint dimensions,
+ GLenum format, GLenum type, GLvoid *pixels,
+ struct gl_texture_image *texImage,
+ GLbitfield transferOps)
{
/* don't want to apply sRGB -> RGB conversion here so override the format */
- const gl_format texFormat = _mesa_get_srgb_format_linear(texImage->TexFormat);
+ const gl_format texFormat =
+ _mesa_get_srgb_format_linear(texImage->TexFormat);
+ const GLenum baseFormat = _mesa_get_format_base_format(texFormat);
const GLuint width = texImage->Width;
const GLuint height = texImage->Height;
const GLuint depth = texImage->Depth;
- const GLenum dataType = _mesa_get_format_datatype(texFormat);
- const GLenum baseFormat = _mesa_get_format_base_format(texFormat);
- /* Normally, no pixel transfer ops are performed during glGetTexImage.
- * The only possible exception is component clamping to [0,1].
- */
- GLbitfield transferOps = 0x0;
+ GLfloat *tempImage, *srcRow;
+ GLuint row;
+
+ /* Decompress into temp float buffer, then pack into user buffer */
+ tempImage = (GLfloat *) malloc(width * height * depth
+ * 4 * sizeof(GLfloat));
+ if (!tempImage) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage()");
+ return;
+ }
- /* In general, clamping does not apply to glGetTexImage, except when
- * the returned type of the image can't hold negative values.
- */
- if (!type_with_negative_values(type)) {
- /* the returned image type can't have negative values */
- if (dataType == GL_FLOAT ||
- dataType == GL_SIGNED_NORMALIZED ||
- format == GL_LUMINANCE ||
- format == GL_LUMINANCE_ALPHA) {
- transferOps |= IMAGE_CLAMP_BIT;
+ /* Decompress the texture image - results in 'tempImage' */
+ {
+ GLubyte *srcMap;
+ GLint srcRowStride;
+
+ ctx->Driver.MapTextureImage(ctx, texImage, 0,
+ 0, 0, width, height,
+ GL_MAP_READ_BIT,
+ &srcMap, &srcRowStride);
+ if (srcMap) {
+ _mesa_decompress_image(texFormat, width, height,
+ srcMap, srcRowStride, tempImage);
+
+ ctx->Driver.UnmapTextureImage(ctx, texImage, 0);
+ }
+ else {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
+ free(tempImage);
+ return;
}
}
- if (_mesa_is_format_compressed(texFormat)) {
- /* Decompress into temp buffer, then pack into user buffer */
- GLfloat *tempImage, *srcRow;
- GLuint row;
+ if (baseFormat == GL_LUMINANCE ||
+ baseFormat == GL_LUMINANCE_ALPHA) {
+ _mesa_rebase_rgba_float(width * height, (GLfloat (*)[4]) tempImage,
+ baseFormat);
+ }
- tempImage = (GLfloat *) malloc(texImage->Width * texImage->Height *
- texImage->Depth * 4 * sizeof(GLfloat));
- if (!tempImage) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage()");
- return;
- }
+ srcRow = tempImage;
+ for (row = 0; row < height; row++) {
+ void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
+ width, height, format, type,
+ 0, row, 0);
- _mesa_decompress_image(texFormat, texImage->Width, texImage->Height,
- texImage->Data, texImage->RowStride, tempImage);
-
- if (baseFormat == GL_LUMINANCE ||
- baseFormat == GL_LUMINANCE_ALPHA) {
- /* Set green and blue to zero since the pack function here will
- * compute L=R+G+B.
- */
- GLuint i;
- for (i = 0; i < width * height; i++) {
- tempImage[i * 4 + GCOMP] = tempImage[i * 4 + BCOMP] = 0.0f;
- }
- }
+ _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) srcRow,
+ format, type, dest, &ctx->Pack, transferOps);
+ srcRow += width * 4;
+ }
- srcRow = tempImage;
- for (row = 0; row < height; row++) {
- void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
- width, height, format, type,
- 0, row, 0);
+ free(tempImage);
+}
- _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) srcRow,
- format, type, dest, &ctx->Pack, transferOps);
- srcRow += width * 4;
- }
- free(tempImage);
+/**
+ * Get an uncompressed color texture image.
+ */
+static void
+get_tex_rgba_uncompressed(struct gl_context *ctx, GLuint dimensions,
+ GLenum format, GLenum type, GLvoid *pixels,
+ struct gl_texture_image *texImage,
+ GLbitfield transferOps)
+{
+ /* don't want to apply sRGB -> RGB conversion here so override the format */
+ const gl_format texFormat =
+ _mesa_get_srgb_format_linear(texImage->TexFormat);
+ const GLuint width = texImage->Width;
+ const GLenum destBaseFormat = _mesa_base_tex_format(ctx, format);
+ GLenum rebaseFormat = GL_NONE;
+ GLuint height = texImage->Height;
+ GLuint depth = texImage->Depth;
+ GLuint img, row;
+ GLfloat (*rgba)[4];
+ GLuint (*rgba_uint)[4];
+ GLboolean is_integer = _mesa_is_format_integer_color(texImage->TexFormat);
+
+ /* Allocate buffer for one row of texels */
+ rgba = (GLfloat (*)[4]) malloc(4 * width * sizeof(GLfloat));
+ rgba_uint = (GLuint (*)[4]) rgba;
+ if (!rgba) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage()");
+ return;
+ }
+
+ if (texImage->TexObject->Target == GL_TEXTURE_1D_ARRAY) {
+ depth = height;
+ height = 1;
+ }
+
+ if (texImage->_BaseFormat == GL_LUMINANCE ||
+ texImage->_BaseFormat == GL_INTENSITY ||
+ texImage->_BaseFormat == GL_LUMINANCE_ALPHA) {
+ /* If a luminance (or intensity) texture is read back as RGB(A), the
+ * returned value should be (L,0,0,1), not (L,L,L,1). Set rebaseFormat
+ * here to get G=B=0.
+ */
+ rebaseFormat = texImage->_BaseFormat;
+ }
+ else if ((texImage->_BaseFormat == GL_RGBA ||
+ texImage->_BaseFormat == GL_RGB) &&
+ (destBaseFormat == GL_LUMINANCE ||
+ destBaseFormat == GL_LUMINANCE_ALPHA ||
+ destBaseFormat == GL_LUMINANCE_INTEGER_EXT ||
+ destBaseFormat == GL_LUMINANCE_ALPHA_INTEGER_EXT)) {
+ /* If we're reading back an RGB(A) texture as luminance then we need
+ * to return L=tex(R). Note, that's different from glReadPixels which
+ * returns L=R+G+B.
+ */
+ rebaseFormat = GL_LUMINANCE_ALPHA; /* this covers GL_LUMINANCE too */
}
- else {
- /* No decompression needed */
- const GLint texelSize = _mesa_get_format_bytes(texFormat);
- GLuint img, row;
- GLfloat (*rgba)[4];
-
- rgba = (GLfloat (*)[4]) malloc(4 * width * sizeof(GLfloat));
- if (!rgba) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage()");
- return;
- }
- for (img = 0; img < depth; img++) {
+ for (img = 0; img < depth; img++) {
+ GLubyte *srcMap;
+ GLint rowstride;
+
+ /* map src texture buffer */
+ ctx->Driver.MapTextureImage(ctx, texImage, img,
+ 0, 0, width, height, GL_MAP_READ_BIT,
+ &srcMap, &rowstride);
+ if (srcMap) {
for (row = 0; row < height; row++) {
+ const GLubyte *src = srcMap + row * rowstride;
void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
width, height, format, type,
img, row, 0);
- const GLubyte *src = (const GLubyte *) texImage->Data +
- (texImage->ImageOffsets[img] +
- texImage->RowStride * row) * texelSize;
-
- _mesa_unpack_rgba_row(texFormat, width, src, rgba);
-
- if (texImage->_BaseFormat == GL_ALPHA) {
- GLint col;
- for (col = 0; col < width; col++) {
- rgba[col][RCOMP] = 0.0F;
- rgba[col][GCOMP] = 0.0F;
- rgba[col][BCOMP] = 0.0F;
- }
- }
- else if (texImage->_BaseFormat == GL_LUMINANCE) {
- GLint col;
- for (col = 0; col < width; col++) {
- rgba[col][GCOMP] = 0.0F;
- rgba[col][BCOMP] = 0.0F;
- rgba[col][ACOMP] = 1.0F;
- }
- }
- else if (texImage->_BaseFormat == GL_LUMINANCE_ALPHA) {
- GLint col;
- for (col = 0; col < width; col++) {
- rgba[col][GCOMP] = 0.0F;
- rgba[col][BCOMP] = 0.0F;
- }
- }
- else if (texImage->_BaseFormat == GL_INTENSITY) {
- GLint col;
- for (col = 0; col < width; col++) {
- rgba[col][GCOMP] = 0.0F;
- rgba[col][BCOMP] = 0.0F;
- rgba[col][ACOMP] = 1.0F;
- }
- }
- _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba,
- format, type, dest,
- &ctx->Pack, transferOps);
- }
+ if (is_integer) {
+ _mesa_unpack_uint_rgba_row(texFormat, width, src, rgba_uint);
+ if (rebaseFormat)
+ _mesa_rebase_rgba_uint(width, rgba_uint, rebaseFormat);
+ _mesa_pack_rgba_span_int(ctx, width, rgba_uint,
+ format, type, dest);
+ } else {
+ _mesa_unpack_rgba_row(texFormat, width, src, rgba);
+ if (rebaseFormat)
+ _mesa_rebase_rgba_float(width, rgba, rebaseFormat);
+ _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba,
+ format, type, dest,
+ &ctx->Pack, transferOps);
+ }
+ }
+
+ /* Unmap the src texture buffer */
+ ctx->Driver.UnmapTextureImage(ctx, texImage, img);
+ }
+ else {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
+ break;
}
+ }
- free(rgba);
+ free(rgba);
+}
+
+
+/**
+ * glGetTexImage for color formats (RGBA, RGB, alpha, LA, etc).
+ * Compressed textures are handled here as well.
+ */
+static void
+get_tex_rgba(struct gl_context *ctx, GLuint dimensions,
+ GLenum format, GLenum type, GLvoid *pixels,
+ struct gl_texture_image *texImage)
+{
+ const GLenum dataType = _mesa_get_format_datatype(texImage->TexFormat);
+ GLbitfield transferOps = 0x0;
+
+ /* In general, clamping does not apply to glGetTexImage, except when
+ * the returned type of the image can't hold negative values.
+ */
+ if (type_needs_clamping(type)) {
+ /* the returned image type can't have negative values */
+ if (dataType == GL_FLOAT ||
+ dataType == GL_SIGNED_NORMALIZED ||
+ format == GL_LUMINANCE ||
+ format == GL_LUMINANCE_ALPHA) {
+ transferOps |= IMAGE_CLAMP_BIT;
+ }
+ }
+ /* This applies to RGB, RGBA textures. if the format is either LUMINANCE
+ * or LUMINANCE ALPHA, luminance (L) is computed as L=R+G+B .we need to
+ * clamp the sum to [0,1].
+ */
+ else if ((format == GL_LUMINANCE ||
+ format == GL_LUMINANCE_ALPHA) &&
+ dataType == GL_UNSIGNED_NORMALIZED) {
+ transferOps |= IMAGE_CLAMP_BIT;
+ }
+
+ if (_mesa_is_format_compressed(texImage->TexFormat)) {
+ get_tex_rgba_compressed(ctx, dimensions, format, type,
+ pixels, texImage, transferOps);
+ }
+ else {
+ get_tex_rgba_uncompressed(ctx, dimensions, format, type,
+ pixels, texImage, transferOps);
}
}
* \return GL_TRUE if done, GL_FALSE otherwise
*/
static GLboolean
-get_tex_memcpy(struct gl_context *ctx, GLenum format, GLenum type, GLvoid *pixels,
- const struct gl_texture_object *texObj,
- const struct gl_texture_image *texImage)
+get_tex_memcpy(struct gl_context *ctx, GLenum format, GLenum type,
+ GLvoid *pixels,
+ struct gl_texture_image *texImage)
{
+ const GLenum target = texImage->TexObject->Target;
GLboolean memCopy = GL_FALSE;
- /* Texture image should have been mapped already */
- assert(texImage->Data);
-
/*
- * Check if the src/dst formats are compatible.
- * Also note that GL's pixel transfer ops don't apply to glGetTexImage()
- * so we don't have to worry about those.
- * XXX more format combinations could be supported here.
+ * Check if we can use memcpy to copy from the hardware texture
+ * format to the user's format/type.
+ * Note that GL's pixel transfer ops don't apply to glGetTexImage()
*/
- if ((texObj->Target == GL_TEXTURE_1D ||
- texObj->Target == GL_TEXTURE_2D ||
- texObj->Target == GL_TEXTURE_RECTANGLE ||
- (texObj->Target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X &&
- texObj->Target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z))) {
- if ((texImage->TexFormat == MESA_FORMAT_ARGB8888 ||
- texImage->TexFormat == MESA_FORMAT_SARGB8) &&
- format == GL_BGRA &&
- (type == GL_UNSIGNED_BYTE || type == GL_UNSIGNED_INT_8_8_8_8_REV) &&
- !ctx->Pack.SwapBytes &&
- _mesa_little_endian()) {
- memCopy = GL_TRUE;
- }
- else if ((texImage->TexFormat == MESA_FORMAT_AL88 ||
- texImage->TexFormat == MESA_FORMAT_SLA8) &&
- format == GL_LUMINANCE_ALPHA &&
- type == GL_UNSIGNED_BYTE &&
- !ctx->Pack.SwapBytes &&
- _mesa_little_endian()) {
- memCopy = GL_TRUE;
- }
- else if ((texImage->TexFormat == MESA_FORMAT_L8 ||
- texImage->TexFormat == MESA_FORMAT_SL8) &&
- format == GL_LUMINANCE &&
- type == GL_UNSIGNED_BYTE) {
- memCopy = GL_TRUE;
- }
- else if (texImage->TexFormat == MESA_FORMAT_L16 &&
- format == GL_LUMINANCE &&
- type == GL_UNSIGNED_SHORT) {
- memCopy = GL_TRUE;
- }
- else if (texImage->TexFormat == MESA_FORMAT_A8 &&
- format == GL_ALPHA &&
- type == GL_UNSIGNED_BYTE) {
- memCopy = GL_TRUE;
- }
- else if (texImage->TexFormat == MESA_FORMAT_A16 &&
- format == GL_ALPHA &&
- type == GL_UNSIGNED_SHORT) {
- memCopy = GL_TRUE;
- }
+ if (target == GL_TEXTURE_1D ||
+ target == GL_TEXTURE_2D ||
+ target == GL_TEXTURE_RECTANGLE ||
+ _mesa_is_cube_face(target)) {
+ memCopy = _mesa_format_matches_format_and_type(texImage->TexFormat,
+ format, type,
+ ctx->Pack.SwapBytes);
}
if (memCopy) {
texImage->Height, format, type, 0, 0);
const GLint dstRowStride =
_mesa_image_row_stride(&ctx->Pack, texImage->Width, format, type);
- const GLubyte *src = texImage->Data;
- const GLint srcRowStride = texImage->RowStride * bpp;
- GLuint row;
+ GLubyte *src;
+ GLint srcRowStride;
+
+ /* map src texture buffer */
+ ctx->Driver.MapTextureImage(ctx, texImage, 0,
+ 0, 0, texImage->Width, texImage->Height,
+ GL_MAP_READ_BIT, &src, &srcRowStride);
+
+ if (src) {
+ if (bytesPerRow == dstRowStride && bytesPerRow == srcRowStride) {
+ memcpy(dst, src, bytesPerRow * texImage->Height);
+ }
+ else {
+ GLuint row;
+ for (row = 0; row < texImage->Height; row++) {
+ memcpy(dst, src, bytesPerRow);
+ dst += dstRowStride;
+ src += srcRowStride;
+ }
+ }
- if (bytesPerRow == dstRowStride && bytesPerRow == srcRowStride) {
- memcpy(dst, src, bytesPerRow * texImage->Height);
+ /* unmap src texture buffer */
+ ctx->Driver.UnmapTextureImage(ctx, texImage, 0);
}
else {
- for (row = 0; row < texImage->Height; row++) {
- memcpy(dst, src, bytesPerRow);
- dst += dstRowStride;
- src += srcRowStride;
- }
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
}
}
/**
* This is the software fallback for Driver.GetTexImage().
* All error checking will have been done before this routine is called.
- * The texture image must be mapped.
+ * We'll call ctx->Driver.MapTextureImage() to access the data, then
+ * unmap with ctx->Driver.UnmapTextureImage().
*/
void
-_mesa_get_teximage(struct gl_context *ctx, GLenum target, GLint level,
+_mesa_get_teximage(struct gl_context *ctx,
GLenum format, GLenum type, GLvoid *pixels,
- struct gl_texture_object *texObj,
struct gl_texture_image *texImage)
{
GLuint dimensions;
- /* If we get here, the texture image should be mapped */
- assert(texImage->Data);
-
- switch (target) {
+ switch (texImage->TexObject->Target) {
case GL_TEXTURE_1D:
dimensions = 1;
break;
dimensions = 2;
}
+ /* map dest buffer, if PBO */
if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
/* Packing texture image into a PBO.
* Map the (potentially) VRAM-based buffer into our process space so
pixels = ADD_POINTERS(buf, pixels);
}
- if (get_tex_memcpy(ctx, format, type, pixels, texObj, texImage)) {
+ if (get_tex_memcpy(ctx, format, type, pixels, texImage)) {
/* all done */
}
else if (format == GL_DEPTH_COMPONENT) {
* All error checking will have been done before this routine is called.
*/
void
-_mesa_get_compressed_teximage(struct gl_context *ctx, GLenum target, GLint level,
- GLvoid *img,
- struct gl_texture_object *texObj,
- struct gl_texture_image *texImage)
+_mesa_get_compressed_teximage(struct gl_context *ctx,
+ struct gl_texture_image *texImage,
+ GLvoid *img)
{
- const GLuint row_stride = _mesa_format_row_stride(texImage->TexFormat,
- texImage->Width);
- const GLuint row_stride_stored = _mesa_format_row_stride(texImage->TexFormat,
- texImage->RowStride);
+ const GLuint row_stride =
+ _mesa_format_row_stride(texImage->TexFormat, texImage->Width);
GLuint i;
+ GLubyte *src;
+ GLint srcRowStride;
if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
/* pack texture image into a PBO */
img = ADD_POINTERS(buf, img);
}
- /* no pixelstore or pixel transfer, but respect stride */
+ /* map src texture buffer */
+ ctx->Driver.MapTextureImage(ctx, texImage, 0,
+ 0, 0, texImage->Width, texImage->Height,
+ GL_MAP_READ_BIT, &src, &srcRowStride);
+
+ if (src) {
+ /* no pixelstore or pixel transfer, but respect stride */
+
+ if (row_stride == srcRowStride) {
+ const GLuint size = _mesa_format_image_size(texImage->TexFormat,
+ texImage->Width,
+ texImage->Height,
+ texImage->Depth);
+ memcpy(img, src, size);
+ }
+ else {
+ GLuint bw, bh;
+ _mesa_get_format_block_size(texImage->TexFormat, &bw, &bh);
+ for (i = 0; i < (texImage->Height + bh - 1) / bh; i++) {
+ memcpy((GLubyte *)img + i * row_stride,
+ (GLubyte *)src + i * srcRowStride,
+ row_stride);
+ }
+ }
- if (row_stride == row_stride_stored) {
- const GLuint size = _mesa_format_image_size(texImage->TexFormat,
- texImage->Width,
- texImage->Height,
- texImage->Depth);
- memcpy(img, texImage->Data, size);
+ ctx->Driver.UnmapTextureImage(ctx, texImage, 0);
}
else {
- GLuint bw, bh;
- _mesa_get_format_block_size(texImage->TexFormat, &bw, &bh);
- for (i = 0; i < (texImage->Height + bh - 1) / bh; i++) {
- memcpy((GLubyte *)img + i * row_stride,
- (GLubyte *)texImage->Data + i * row_stride_stored,
- row_stride);
- }
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetCompresssedTexImage");
}
if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
struct gl_texture_image *texImage;
const GLint maxLevels = _mesa_max_texture_levels(ctx, target);
const GLuint dimensions = (target == GL_TEXTURE_3D) ? 3 : 2;
- GLenum baseFormat;
+ GLenum baseFormat, err;
if (maxLevels == 0) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(target=0x%x)", target);
return GL_TRUE;
}
- if (_mesa_sizeof_packed_type(type) <= 0) {
- _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexImage(type)" );
- return GL_TRUE;
- }
-
- if (_mesa_components_in_format(format) <= 0 ||
- format == GL_STENCIL_INDEX ||
- format == GL_COLOR_INDEX) {
- _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexImage(format)" );
- return GL_TRUE;
- }
-
- if (!ctx->Extensions.ARB_depth_texture && _mesa_is_depth_format(format)) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)");
- return GL_TRUE;
- }
-
- if (!ctx->Extensions.MESA_ycbcr_texture && _mesa_is_ycbcr_format(format)) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)");
- return GL_TRUE;
- }
-
- if (!ctx->Extensions.EXT_packed_depth_stencil
- && _mesa_is_depthstencil_format(format)) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)");
- return GL_TRUE;
- }
-
- if (!ctx->Extensions.ATI_envmap_bumpmap
- && _mesa_is_dudv_format(format)) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)");
+ err = _mesa_error_check_format_and_type(ctx, format, type);
+ if (err != GL_NO_ERROR) {
+ _mesa_error(ctx, err, "glGetTexImage(format/type)");
return GL_TRUE;
}
texImage = _mesa_select_tex_image(ctx, texObj, target, level);
if (!texImage) {
- /* out of memory */
+ /* non-existant texture image */
return GL_TRUE;
}
texObj = _mesa_get_current_tex_object(ctx, target);
texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+ if (_mesa_is_zero_size_texture(texImage))
+ return;
+
if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE)) {
_mesa_debug(ctx, "glGetTexImage(tex %u) format = %s, w=%d, h=%d,"
" dstFmt=0x%x, dstType=0x%x\n",
_mesa_lock_texture(ctx, texObj);
{
- ctx->Driver.GetTexImage(ctx, target, level, format, type, pixels,
- texObj, texImage);
+ ctx->Driver.GetTexImage(ctx, format, type, pixels, texImage);
}
_mesa_unlock_texture(ctx, texObj);
}
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetnCompressedTexImageARB(out of bounds access:"
" bufSize (%d) is too small)", clientMemSize);
+ return GL_TRUE;
}
} else {
/* do bounds checking on PBO write */
return;
}
- if (_mesa_is_bufferobj(ctx->Pack.BufferObj) && !img) {
+ if (!_mesa_is_bufferobj(ctx->Pack.BufferObj) && !img) {
/* not an error, do nothing */
return;
}
texObj = _mesa_get_current_tex_object(ctx, target);
texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+ if (_mesa_is_zero_size_texture(texImage))
+ return;
+
if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE)) {
_mesa_debug(ctx,
"glGetCompressedTexImage(tex %u) format = %s, w=%d, h=%d\n",
_mesa_lock_texture(ctx, texObj);
{
- ctx->Driver.GetCompressedTexImage(ctx, target, level, img,
- texObj, texImage);
+ ctx->Driver.GetCompressedTexImage(ctx, texImage, img);
}
_mesa_unlock_texture(ctx, texObj);
}
projects / mesa.git / blobdiff