[Piglit] genmipmap-errors test

[Anuj Phogat]

Brian,

Today I came across this unread email from you. I missed it somehow. I'm
not sure if this information is still relevant but here is what I have
found:

Testing GL_INVALID_OPERATION for integer and depth/stencil texture formats
is based on a mesa commit:
 http://lists.freedesktop.org/archives/mesa-commit/2012-November/040045.html

This commit points to a Khronos bug#9471. It seems like Khronos had reached
a conclusion on the bug page but they never updated the spec. Also, status
of the bug still says 'Assigned', not 'Resolved'. I'll ask for the
clarification from Khronos.

Sorry for the delayed response.

- Anuj

On Fri, Sep 13, 2013 at 10:03 AM, Brian Paul <brianp at vmware.com> wrote:

>
> Anuj,
>
> Your genmipmap-errors test checks if glGenerateMipmaps raises
> GL_INVALID_OPERATION for integer and depth/stencil texture formats.
>
> Can you tell me which version of the GL spec or extension describes this?
>
> genmipmap-errors fails with NVIDIA's OpenGL 4.2 since it does not raise
> any errors for glGenerateMipmaps(integer texture).
>
> I'm wondering if that error check was lifted in some version of GL.
>
> The man page at http://www.opengl.org/sdk/docs/man/xhtml/
> glGenerateMipmap.xml doesn't say that integer textures should raise an
> error.
>
> I seem to remember some ARB discussion about the validity of integer
> mipmap generation but I don't remember the outcome.
>
> -Brian
>
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