[Mesa-dev] [PATCH 00/37] Geometry shader support in Sandy Bridge

[Mike Lothian]

On 21 August 2014 00:41, Matt Turner <mattst88 at gmail.com> wrote:
> On Wed, Aug 20, 2014 at 4:30 PM, Mike Lothian <mike at fireburn.co.uk> wrote:
>> Hi I tested the branch - glxinfo reports GL 3.2 and GLSL 1.50 however
>> when I run Heaven 4 I get a blank screen when rendering and the
>> following messages:
>>
>> GLFrameBuffer::enable(): incomplete attachment
>> GLFrameBuffer::enable(): incomplete attachment
>> GLFrameBuffer::enable(): incomplete attachment
>> GLFrameBuffer::enable(): incomplete attachment
>> OpenGL error: invalid framebuffer operation
>>
>> This only happens when at 8xAA - is the demo mis detecting the AA
>> abilities of Sandybridge?
>
> Sounds like it. Sandybridge can only do 4x MSAA.

Hmm mis detecting or is the driver mis advertising?
>
>> Valley seem to have rendering issues no matter what the AA level - I
>> get black trees in the foreground
>
> Possibly need some workaround. Can't remember.
>
>> With Oil Rush I always get white game rendering (the overlays are
>> fine) no matter what the AA level
>
> This sounds like the problem where their shaders put #extension in the
> wrong place. Try running with
> MESA_EXTENSION_OVERRIDE=-GL_ARB_sample_shading. I think there's a
> driconf for this now.

Yes that fixed the Oil Rush one - I don't need to pass that with r600g
though so I'm thinking that maybe i965 isn't using that driconf file