[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 #27 from Nanley Chery <nanleychery at gmail.com> ---
(In reply to Tapani Pälli from comment #7)
> (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

I closed this bug because it was being tracked for GLES 3.1 conformance. The
outstanding MR for the CTS will be an issue for the next GL version we try to
reach conformance for. Is this a non-issue, or do you think I should reopen
this and remove the tracking on it?

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