[Bug 92743] Centroid shouldn't have to match between the FS and the VS

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92743

--- Comment #10 from Timothy Arceri <t_arceri at yahoo.com.au> ---
(In reply to Marta Löfstedt from comment #9)
> Yes Tapani, 
> 
> The idea is to remove the centroid requirement from mesa. I have sent up a
> patch for this:
> https://patchwork.freedesktop.org/patch/63641/
> 
> and then have Google update the dEQP test according to GLES standard, i.e.
> the shader should not link for GLES (GLSL version is < 440), when smooth
> differs over shader stages.

I think Google is already doing the right thing. From the ES GLSL spec:

"When no interpolation qualifier is present, smooth interpolation is used."

So there should be no problem having smooth in one stage and nothing in the
next as the default is smooth.

I looked at this problem last year after seeing issues in other deqp tests and
had a fix but I wasn't sure at the time the impact on desktop GL. Looking at it
again it seems its always smooth by default too unless there is some compat
builtin stuff going on but that shouldn't be an issue.

I've sent a patch for this half of the issue to the mailing list.

https://lists.freedesktop.org/archives/mesa-dev/2016-February/107692.html

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-3d-bugs/attachments/20160215/780f9f52/attachment.html>