[Bug 92193] [SKL] ES2-CTS.gtf.GL2ExtensionTests.compressed_astc_texture.compressed_astc_texture fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92193

--- Comment #7 from Tapani Pälli <lemody at gmail.com> ---
(In reply to Nanley Chery from comment #6)
> (In reply to Tapani Pälli from comment #5)
> > (In reply to Nanley Chery from comment #4)
> > > Looks like there's a bug in the CTS. It looks for the ASTC formats in the
> > > list returned by glGetIntegerv(GL_COMPRESSED_TEXTURE_FORMATS, ...). As
> > > mentioned in spec, the ASTC format enums won't be returned by this function:
> > > 
> > > Interactions with OpenGL 4.2
> > > 
> > >     OpenGL 4.2 supports the feature that compressed textures can be
> > >     compressed online, by passing the compressed texture format enum as
> > >     the internal format when uploading a texture using TexImage1D,
> > >     TexImage2D or TexImage3D (see Section 3.9.3, Texture Image
> > >     Specification, subsection Encoding of Special Internal Formats).
> > > 
> > >     Due to the complexity of the ASTC compression algorithm, it is not
> > >     usually suitable for online use, and therefore ASTC support will be
> > >     limited to pre-compressed textures only. Where on-device compression
> > >     is required, a domain-specific limited compressor will typically
> > >     be used, and this is therefore not suitable for implementation in
> > >     the driver.
> > > 
> > >     In particular, the ASTC format specifiers will not be added to
> > >     Table 3.14, and thus will not be accepted by the TexImage*D
> > >     functions, and will not be returned by the (already deprecated)
> > >     COMPRESSED_TEXTURE_FORMATS query.
> > > 
> > > I'll send a patch upstream to fix this. Should I take any further steps?
> > 
> > This sounds good, did you file a bug in Khronos bugzilla?
> 
> I just filed the bug (and attached the patch)
> https://www.khronos.org/bugzilla/show_bug.cgi?id=1395 . Thanks for the tip.
> Is there anything else we should do?

this is fine, I think we should keep this bug open until the issue is resolved
in the test suite

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