On Tue, Mar 25, 2014 at 02:54:56PM +0000, Chris Wilson wrote:
> On Tue, Mar 25, 2014 at 02:49:30PM +0000, Damien Lespiau wrote:
> > Those fields are supposed to be a good default value for the cursor
> > size, intended for the case where the hardware doesn't support 64x64
> > cursors, for use with a hw agnostic DDX driver for instance.
> > 
> > We're fine with 64x64 cursors though and don't need to set those fields
> > (DRM core will return 64 is we don't). If we declare 256x256, that
> > generic driver will use a big buffer for the cursor, without any good
> > reason.
> 
> How does userspace now know that 256x256 cursors are support for HiDPI?

It doesn't currently? a property on the cursor plane with the list of
supported formats in the brave new full drm_plane world seems like a
good option to me.

-- 
Damien
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