[Mesa-dev] [Bug 27924] [TTM] Illegal buffer object size. Black screen with Compiz

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=27924

--- Comment #10 from Xavier <shiningxc at gmail.com> 2010-05-04 15:25:38 PDT ---
(In reply to comment #9)
> FWIW I get textures of size 0x0 in resource_create when texture_from_pixmap is
> used. I guess it might be the reason the buffer allocation is failing. It's
> reproducible via piglit/tfp.

I can indeed reproduce the problem with nv50 on both compiz and tfp.

I've noticed that the commit changed firstImage->base.Width2(,height,depth) to
stObj->width0(,height,depth)

I've enabled DBG and added one printf below :
   /* If we already have a gallium texture, check that it matches the texture
    * object's format, target, size, num_levels, etc.
    */
   if (stObj->pt) {
           printf("stobj->pt %dx%dx%d stobj %dx%dx%d firstimage %dx%dx%d\n",
stObj->pt->width0, stObj->pt->height0, stObj->pt->depth0,
                           stObj->width0, stObj->height0, stObj->depth0,
                           firstImage->base.Width2, firstImage->base.Height2,
firstImage->base.Depth2);

And this is the ouput with tfp :
st_NewTextureObject
st_NewTextureImage
stobj->pt 2x2x1 stobj 0x0x0 firstimage 2x2x1
Mesa: User error: GL_OUT_OF_MEMORY in glTexImage
stobj->pt 2x2x1 stobj 0x0x0 firstimage 2x2x1
st_NewTextureObject
st_NewTextureImage
st_FreeTextureImageData
stobj->pt 2x2x1 stobj 0x0x0 firstimage 2x2x1
stobj->pt 2x2x1 stobj 0x0x0 firstimage 2x2x1

I doubt this helps, but just in case...
I don't understand what stobj, stobj->pt and firstimage are respectively.

I don't understand that comment below either, but from the output above, the
image dimensions don't seem to match.
   /* If both firstImage and stObj point to a texture which can contain
    * all active images, favour firstImage.  Note that because of the
    * completeness requirement, we know that the image dimensions
    * will match.
    */

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