[Intel-gfx] [PATCH] drm/i915: The hw does not support source offsets into a YUV linear fb

[Daniel Vetter]

On Tue, Dec 18, 2012 at 11:51 PM, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> As we can only pass in the base address of the first plane, we can not
> control the offset into the subsampled chroma planes. This means that we
> cannot support a source offset into a YUV* linear framebuffer. However,
> for tiled framebuffers we can tell the hardware which pixels to read
> from. So if we see a source offset into a linear YUV framebuffer, report
> the invalid value back to userspace.
>
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

Aren't all the yuv formats we support packet planar? So I think we
should be able to support source offsets, as long as x is even ...
Probably not worth the bother though.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch