[Mesa-dev] [Bug 44743] Rendering artefacts with llvmpipe

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=44743

--- Comment #14 from Vasily Khoruzhick <anarsoul at gmail.com> ---
(In reply to comment #13)
> I tried the trace here w/ NVIDIA GL driver and the rendering here looks just
> like your screenshot.
> 
> I though by artefacts you meant the countours in the balls, but I'm not sure
> anymore. Could you describe exactly what you believe to be artifacts?

All balls are colored in wrong colors.

> Also, glretrace here shows many errors, both with NVIDIA or Mesa:
> 
> Mesa:
> 
> Mesa: User error: GL_INVALID_VALUE in glMaterial(invalid shininess:
> 1000.000000 out range [0, 128.000000])
> 38030: glDebugOutputCallback: High severity API error 0, GL_INVALID_VALUE in
> glMaterial(invalid shininess: 1000.000000 out range [0, 128.000000])
> 0 38030 glCallList(list = 1)
> 
> NVIDIA:
> 
> 38030: glDebugOutputCallback: High severity API error 1281, GL_INVALID_VALUE
> error generated.
> 0 38030 glCallList(list = 1)
> 38030: warning: glGetError(glCallList) = GL_INVALID_VALUE
> 
> 
> I suspect this may be an application bug... Maybe induced by something in
> Mesa drivers, but it looks like the drivers are rendering what they are
> being told..

I'm pretty sure that I had no such issue with i915 driver (on same machine with
same Mesa version), but I have no machine with i915 hw anymore, so can't check.
Anyway, foobillard++ on i965 Mesa driver (with Ivy Bridge hardware) has same
issue, so probably it's an application bug.

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