[PATCH v4 00/11] Enabling 180 degree rotation for sprite and crtc planes (original) (raw)
One Thousand Gnomes gnomes at lxorguk.ukuu.org.uk
Mon Feb 10 06:14:54 PST 2014
- Previous message: [PATCH v4 00/11] Enabling 180 degree rotation for sprite and crtc planes
- Next message: [PATCH v4 07/11] drm/i915: Add 180 degree sprite rotation support
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
> Does this mean it should also handle horizontal mirroring in > hardware (180° rotate, and scan lines backwards combined) ?
Our hardware doesn't support mirroring (h or v). Well, unless you count h+v mirroring since that's 180 degree rotation :) Anyways IIRC the old video overlay (present on gen2-4) was the only plane to ever support mirroring on Intel hardware. With all other planes we're limited to 0 and 180 degree rotation
It seems to do vertical mirroring providing your output buffer is allocated and aligned on page boundaries as the GTT can then be used to map the scan lines in any order you like ?
Alan
- Previous message: [PATCH v4 00/11] Enabling 180 degree rotation for sprite and crtc planes
- Next message: [PATCH v4 07/11] drm/i915: Add 180 degree sprite rotation support
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]