/**
* 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;
GLfloat *depthRow = (GLfloat *) malloc(width * sizeof(GLfloat));
- const GLint texelSize = _mesa_get_format_bytes(texImage->TexFormat);
if (!depthRow) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
}
for (img = 0; img < depth; img++) {
+ GLubyte *srcMap;
+ GLint srcRowStride;
+
+ /* map src texture buffer */
+ ctx->Driver.MapTextureImage(ctx, texImage, img,
+ 0, 0, width, height, GL_MAP_READ_BIT,
+ &srcMap, &srcRowStride);
+
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 = (GLubyte *) texImage->Data +
- (texImage->ImageOffsets[img] +
- texImage->RowStride * row) * texelSize;
-
+ 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);
}
+
+ ctx->Driver.UnmapTextureImage(ctx, texImage, img);
}
free(depthRow);
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++) {
+ GLubyte *srcMap;
+ GLint rowstride;
+
+ /* map src texture buffer */
+ ctx->Driver.MapTextureImage(ctx, texImage, img,
+ 0, 0, width, height, GL_MAP_READ_BIT,
+ &srcMap, &rowstride);
+
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);
}
}
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++) {
+ GLubyte *srcMap;
+ GLint rowstride;
+
+ /* map src texture buffer */
+ ctx->Driver.MapTextureImage(ctx, texImage, img,
+ 0, 0, width, height, GL_MAP_READ_BIT,
+ &srcMap, &rowstride);
+
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);
else if (ctx->Pack.SwapBytes) {
_mesa_swap2((GLushort *) dest, width);
}
-
- src += rowstride;
}
+
+ ctx->Driver.UnmapTextureImage(ctx, texImage, img);
}
}
/* 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)) {
+ if (type_needs_clamping(type)) {
/* the returned image type can't have negative values */
if (dataType == GL_FLOAT ||
dataType == GL_SIGNED_NORMALIZED ||
return;
}
- _mesa_decompress_image(texFormat, texImage->Width, texImage->Height,
- texImage->Data, texImage->RowStride, tempImage);
+ /* Decompress the texture image - results in 'tempImage' */
+ {
+ GLubyte *srcMap;
+ GLint srcRowStride;
+ GLuint bytes, bw, bh;
+
+ bytes = _mesa_get_format_bytes(texImage->TexFormat);
+ _mesa_get_format_block_size(texImage->TexFormat, &bw, &bh);
+
+ ctx->Driver.MapTextureImage(ctx, texImage, 0,
+ 0, 0, width, height,
+ GL_MAP_READ_BIT,
+ &srcMap, &srcRowStride);
+
+ /* XXX This line is a bit of a hack to work around the
+ * mismatch of compressed row strides as returned by
+ * MapTextureImage() vs. what the texture decompression code
+ * uses. This will be fixed in the future.
+ */
+ srcRowStride = srcRowStride * bh / bytes;
+
+ _mesa_decompress_image(texFormat, width, height,
+ srcMap, srcRowStride, tempImage);
+
+ ctx->Driver.UnmapTextureImage(ctx, texImage, 0);
+ }
if (baseFormat == GL_LUMINANCE ||
baseFormat == GL_LUMINANCE_ALPHA) {
}
else {
/* No decompression needed */
- const GLint texelSize = _mesa_get_format_bytes(texFormat);
GLuint img, row;
GLfloat (*rgba)[4];
}
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);
+
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);
format, type, dest,
&ctx->Pack, transferOps);
}
+
+ /* Unmap the src texture buffer */
+ ctx->Driver.UnmapTextureImage(ctx, texImage, img);
}
free(rgba);
* \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.
*/
- 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 ((target == GL_TEXTURE_1D ||
+ target == GL_TEXTURE_2D ||
+ target == GL_TEXTURE_RECTANGLE ||
+ (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X &&
+ target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z))) {
if ((texImage->TexFormat == MESA_FORMAT_ARGB8888 ||
texImage->TexFormat == MESA_FORMAT_SARGB8) &&
format == GL_BGRA &&
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 (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;
}
}
+
+ /* unmap src texture buffer */
+ ctx->Driver.UnmapTextureImage(ctx, texImage, 0);
}
return memCopy;
/**
* This is the software fallback for Driver.GetTexImage().
* All error checking will have been done before this routine is called.
- * The texture image must be mapped.
+ * 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) {
struct gl_texture_object *texObj,
struct gl_texture_image *texImage)
{
- const GLuint row_stride = _mesa_format_row_stride(texImage->TexFormat,
- texImage->Width);
- const GLuint row_stride_stored = _mesa_format_row_stride(texImage->TexFormat,
- texImage->RowStride);
+ 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);
}
+ /* map src texture buffer */
+ ctx->Driver.MapTextureImage(ctx, texImage, 0,
+ 0, 0, texImage->Width, texImage->Height,
+ GL_MAP_READ_BIT, &src, &srcRowStride);
+
/* no pixelstore or pixel transfer, but respect stride */
- if (row_stride == row_stride_stored) {
+ if (row_stride == srcRowStride) {
const GLuint size = _mesa_format_image_size(texImage->TexFormat,
texImage->Width,
texImage->Height,
texImage->Depth);
- memcpy(img, texImage->Data, size);
+ 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 *)texImage->Data + i * row_stride_stored,
+ (GLubyte *)src + i * srcRowStride,
row_stride);
}
}
+ ctx->Driver.UnmapTextureImage(ctx, texImage, 0);
+
if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
ctx->Driver.UnmapBuffer(ctx, ctx->Pack.BufferObj);
}
_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);
}
return;
}
- if (_mesa_is_bufferobj(ctx->Pack.BufferObj) && !img) {
+ if (!_mesa_is_bufferobj(ctx->Pack.BufferObj) && !img) {
/* not an error, do nothing */
return;
}
projects / mesa.git / blobdiff