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Fix compressed texture loads for non-minimal pitches

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The current glCompressedTexImage support in the state tracker assumes
that compressed textures have minimal pitch.

However, in some cases this is not true, such as for mipmaps of non-POT
compressed textures on nVidia hardware.

This patch adds a check and does a memcpy for each line instead of the
whole image in that case.

Signed-off-by: Keith Whitwell <keithw@vmware.com>

Tweaks for C90 compilation.
This commit is contained in:
Luca Barbieri 2010-01-10 12:04:21 -08:00 • committed by Keith Whitwell
parent bfcafbe15d
commit eea6a7639f
1 changed files with 16 additions and 1 deletions
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17
src/mesa/state_tracker/st_cb_texture.c
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@ -680,7 +680,22 @@ st_TexImage(GLcontext * ctx,
* conversion and copy:
*/
if (compressed_src) {
memcpy(texImage->Data, pixels, imageSize);
const GLuint srcImageStride = _mesa_format_row_stride(texImage->TexFormat, width);
if(dstRowStride == srcImageStride)
memcpy(texImage->Data, pixels, imageSize);
else
{
char *dst = texImage->Data;
const char *src = pixels;
int i;
for(i = 0; i < height; ++i)
{
memcpy(dst, src, srcImageStride);
dst += dstRowStride;
src += srcImageStride;
}
}
}
else {
const GLuint srcImageStride =