[Intel-gfx] [PATCH 5/6] drm/i915: Handle framebuffer offsets
daniel at ffwll.ch
Thu May 24 12:01:24 PDT 2012
On Thu, May 24, 2012 at 09:49:15PM +0300, Ville Syrjälä wrote:
> On Thu, May 24, 2012 at 11:31:32AM -0700, Jesse Barnes wrote:
> > On Thu, 24 May 2012 21:08:58 +0300
> > ville.syrjala at linux.intel.com wrote:
> > > From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> > >
> > > Take fb->offset into account when calculating the linear and tile x/y
> > > offsets.
> > >
> > > For non-tiled surfaces fb->offset is simply added to the linear
> > > byte offset.
> > >
> > > For tiled surfaces treat fb->offsets as a byte offset into the
> > > linearized view of the surface. So we end up converting fb->offsets
> > > into additional x and y offsets.
> > Do you have code using a non-zero offsets? At least for current
> > code that would indicate some kind of problem... though hopefully we'll
> > be adding planar support back again sometime soon.
> I did have some test app that used offsets at some point, but tbh I
> didn't excercise these changes with it.
> I have a sort of semi working skeleton of a test app which I just modify
> for various use cases as need arises. I really should try to clean it up
> a bit and generalize it so that it wouldn't need constant code changes
> to test different scenarios.
Yeah, I want these little test apps as testcases in i-g-t.
Mail: daniel at ffwll.ch
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