<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body>
<p>
<div>
<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [SKL] ES2-CTS.gtf.GL2ExtensionTests.compressed_astc_texture.compressed_astc_texture fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92193#c5">Comment # 5</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [SKL] ES2-CTS.gtf.GL2ExtensionTests.compressed_astc_texture.compressed_astc_texture fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92193">bug 92193</a>
from <span class="vcard"><a class="email" href="mailto:lemody@gmail.com" title="Tapani Pälli <lemody@gmail.com>"> <span class="fn">Tapani Pälli</span></a>
</span></b>
<pre>(In reply to Nanley Chery from <a href="show_bug.cgi?id=92193#c4">comment #4</a>)
<span class="quote">> 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?</span >
This sounds good, did you file a bug in Khronos bugzilla?</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
</ul>
</body>
</html>