[PATCH xserver 2/2] randr: Use RRCrtcGetScanoutSize() in ProcRRSetScreenSize()

[Michel Dänzer]

On 2018-01-09 10:21 PM, Keith Packard wrote:
> Alex Goins <agoins at nvidia.com> writes:
> 
>> RRCrtcGetScanoutSize() adds a significant amount of complexity compared to
>> simply checking the rotation and swapping width and height, since it operates by
>> applying the transformation matrix crtc->transform to the mode.
> 
> There's also an implicit assumption that when a transform is applied,
> there will be a shadow buffer and so the scanout buffer need not be
> large enough to hold the whole image. I don't know if that's useful in
> practice, but that is why there are two different paths here.

Sounds like we only want patch 1 then?


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer

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