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mesa: handle 2D texture arrays in get_tex_rgba_compressed() 

If we call glGetTexImage() for a compressed 2D texture array we need
to loop over all the slices.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=66850

NOTE: This is a candidate for the 9.x branches.
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: José Fonseca <jfonseca@vmware.com>
This commit is contained in:
Brian Paul 2013-07-15 10:23:49 -06:00
parent 5c37039797
commit 2931bcb0d2
1 changed files with 23 additions and 27 deletions
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50
src/mesa/main/texgetimage.c
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@ -233,8 +233,8 @@ get_tex_rgba_compressed(struct gl_context *ctx, GLuint dimensions,
const GLuint width = texImage->Width;
const GLuint height = texImage->Height;
const GLuint depth = texImage->Depth;
GLfloat *tempImage, *srcRow;
GLuint row;
GLfloat *tempImage, *tempSlice, *srcRow;
GLuint row, slice;
/* Decompress into temp float buffer, then pack into user buffer */
tempImage = malloc(width * height * depth
@ -244,20 +244,22 @@ get_tex_rgba_compressed(struct gl_context *ctx, GLuint dimensions,
return;
}
/* Decompress the texture image - results in 'tempImage' */
{
/* Decompress the texture image slices - results in 'tempImage' */
for (slice = 0; slice < depth; slice++) {
GLubyte *srcMap;
GLint srcRowStride;
ctx->Driver.MapTextureImage(ctx, texImage, 0,
tempSlice = tempImage + slice * 4 * width * height;
ctx->Driver.MapTextureImage(ctx, texImage, slice,
0, 0, width, height,
GL_MAP_READ_BIT,
&srcMap, &srcRowStride);
if (srcMap) {
_mesa_decompress_image(texFormat, width, height,
srcMap, srcRowStride, tempImage);
srcMap, srcRowStride, tempSlice);
ctx->Driver.UnmapTextureImage(ctx, texImage, 0);
ctx->Driver.UnmapTextureImage(ctx, texImage, slice);
}
else {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
@ -294,15 +296,19 @@ get_tex_rgba_compressed(struct gl_context *ctx, GLuint dimensions,
rebaseFormat);
}
srcRow = tempImage;
for (row = 0; row < height; row++) {
void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
width, height, format, type,
0, row, 0);
tempSlice = tempImage;
for (slice = 0; slice < depth; slice++) {
srcRow = tempSlice;
for (row = 0; row < height; row++) {
void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
width, height, format, type,
slice, row, 0);
_mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) srcRow,
format, type, dest, &ctx->Pack, transferOps);
srcRow += width * 4;
_mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) srcRow,
format, type, dest, &ctx->Pack, transferOps);
srcRow += 4 * width;
}
tempSlice += 4 * width * height;
}
free(tempImage);
@ -616,18 +622,8 @@ _mesa_get_teximage(struct gl_context *ctx,
GLenum format, GLenum type, GLvoid *pixels,
struct gl_texture_image *texImage)
{
GLuint dimensions;
switch (texImage->TexObject->Target) {
case GL_TEXTURE_1D:
dimensions = 1;
break;
case GL_TEXTURE_3D:
dimensions = 3;
break;
default:
dimensions = 2;
}
const GLuint dimensions =
_mesa_get_texture_dimensions(texImage->TexObject->Target);
/* map dest buffer, if PBO */
if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {