[Mesa-dev] [PATCH] r600g: Implement GL_ARB_texture_gather

[Dave Airlie]

>> Also, have you looked at Dave Airlie's impl? Not sure what's been
>> going on there...
>> http://cgit.freedesktop.org/~airlied/mesa/log/?h=r600g-texture-gather
>> . He seemed to enable 4 components for >= CEDAR.
>>
>
> No, didn't pop up when i searched the archives for any prior work on this.
> Interesting! It looks like the GL_ARB_texture_gather portion in that branch
> is almost exactly equivalent to my patch.
>
> It also has some of the additional parts needed for GL_ARB_gpu_shader5 such
> as non-constant offsets, but i don't see where it would trigger shader
> recompiles if texture sampler swizzle changes? Does it pass piglit?
>
>
> David, any opinions on how to move forward with this feature?

I didn't like my implementation sufficiently to push it forward, but I
think the main thing
was the extra key changes, I meant to get Marek's input on that code,
but then it fell
off my radar. So get input from Marek, repost and merge :)

Dave.