[Mesa-dev] [PATCH 2/2] gallium: Add renderonly-based support for pl111+vc4.

[Eric Anholt]

Christian Gmeiner <christian.gmeiner at gmail.com> writes:

> 2017-05-11 1:06 GMT+02:00 Eric Anholt <eric at anholt.net>:
>> This follows the model of imx (display) and etnaviv (render): pl111 is a
>> display-only device, so when asked to do GL for it, we see if we have a
>> vc4 renderer, make the vc4 screen, and have vc4 call back to pl111 to do
>> scanout allocations.
>>
>> The difference from etnaviv is that we share the same BO between vc4 and
>> pl111, rather than having a vc4 bo and a pl11 bo and copies between the
>> two.  The only mismatch between their requirements is that vc4 requires
>> 4-pixel (at 32bpp) stride alignment, while pl111 requires that stride
>> match width.  The kernel will reject any modesets to an incorrect stride,
>> so the 3D driver doesn't need to worry about that.
>
>
> With Emil's comment (regarding  drmOpen* API) taken care of
>
> Reviewed-by: Christian Gmeiner <christian.gmeiner at gmail.com>

Emil was confused how the API works, and there's no problem here.
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