[Mesa-dev] 10-bit Mesa/Gallium support

[Marek Olšák]

On Thu, Nov 23, 2017 at 6:45 PM, Ilia Mirkin <imirkin at alum.mit.edu> wrote:
> On Thu, Nov 23, 2017 at 12:35 PM, Marek Olšák <maraeo at gmail.com> wrote:
>> Hi everybody,
>>
>> Mario, feel free to push your patches if you haven't yet. (except the
>> workaround)
>>
>> For AMD, I applied Mario's patches (except Wayland - that didn't
>> apply) and added initial Gallium support:
>> https://cgit.freedesktop.org/~mareko/mesa/log/?h=10bit
>>
>> What's the status of Glamor?
>>
>> Do we have patches for xf86-video-amdgpu? The closed should have
>> 10-bit support, meaning we should have DDX patches already somewhere,
>> right?
>
> I'd like to test this out with nouveau as well... do I understand
> correctly that I shouldn't need anything special to check if it
> basically works? i.e. I apply the patches, start Xorg in bpp=30 mode,
> and then if glxgears works then I'm done? Is there a good way that I'm
> really in 30bpp mode as far as all the software is concerned? (I don't
> have a colorimeter or whatever fancy hw to *really* tell the
> difference, although I do have a "deep color" TV.) If used with a
> 24bpp display, is the hw supposed to dither somehow?

glxinfo should print 10bit visuals and the glx piglit tests should test them.

Or you can convince waffle/gbm to give you a 10-bit off-screen back buffer.

Marek