[Bug 90748] [BDW Bisected]dEQP-GLES3.functional.fbo.completeness.renderable.texture.depth.rg_half_float_oes fails

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sun Jun 7 22:11:07 PDT 2015


https://bugs.freedesktop.org/show_bug.cgi?id=90748

--- Comment #14 from Tapani Pälli <lemody at gmail.com> ---
(In reply to Matt Turner from comment #13)
> (In reply to Gavin Hindman from comment #12)
> > If this is an issue in the test, then why would it have previously been
> > passing, but now is not?  These are regressions against a Mesa snapshot
> > that's only a few months old, not standing historical failures.
> 
> It's because the test was not running before we enabled the extension.

Yeah, these subtests are only run with the new enabled functionality.
Unfortunately the main test also covers other formats, so enabling floating
point textures makes the whole test fail while it used to pass earlier. We are
still passing all the other subtests (and all the floating point format tests
expect when using GL_RED and GL_RG).

There are 2 khronos bugs lingering around this issue:

https://cvs.khronos.org/bugzilla/show_bug.cgi?id=7333 (still open)
https://cvs.khronos.org/bugzilla/show_bug.cgi?id=8909 (resolved in gles 3.0)

Reading these it's still a bit unclear to me how this should be resolved.
OpenGL ES 3.0 clearly states (in 4.4.4 Framebuffer completeness):

"The following base internal formats from table 3.15 are color-renderable:
ALPHA , RED , RG , RGB , and RGBA . The sized internal formats from ta-
ble 3.16 that have a color-renderable base internal format are also color-
renderable. No other formats, including compressed internal formats, are
color-renderable."

However, GL_RED or GL_RG are not valid for OpenGL ES 2.0 and not enabled by the
extension. I think this is part of bug #7333, it is not clear what sized format
should we pick internally when RED or RG is given by the user.

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