[Mesa-dev] [PATCH 03/27] gbm: Export a plane getter function

[Daniel Stone]

Hi,

On 10 January 2017 at 05:49, Ben Widawsky <benjamin.widawsky at intel.com> wrote:
> On 17-01-09 11:56:04, Jason Ekstrand wrote:
>> Do we need to do any error checking here?  Do we need to check for the
>> right dri image extension version?  Do we need to check queryImage !=
>> NULL?  Do we need to check a return value?
>>
>> I ask because I genuinely don't know how this stuff is supposed to work.
>> Returning a default of 1 seems reasonable.
>
> I'm not entirely sure about a reasonable default, 1 seemed right to me, but
> Eric
> E seemed to think we should return 0, it's hard to test, so I'll defer to
> anyone
> that claims to be the expert.

Drivers which don't support the new interfaces can by definition only
export single-plane images. So, 1.

Cheers,
Daniel