[Intel-gfx] [RFC 1/1] drm/i915: Added support for setting plane alpha through drm property

[Daniel Vetter]

On Thu, Mar 6, 2014 at 11:28 AM, Sagar Arun Kamble
<sagar.a.kamble at intel.com> wrote:
> We can only model GL_CONSTANT_ALPHA given we have sprite control
> registers for that. How do we model other pixel arithmetic related to
> color blending?
> How do we model source and destination pixel arithmetic? We can only set
> alpha/pre-multiplied alpha for individual planes.

We reject it if userspace attempts it ;-) But we kinda want a model
which also works for the next few hw platforms and also on other
drivers, so going with this sounds like the right approach to me.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch