Re: [Intel-gfx] [PATCH 5/6] drm/i915: Handle framebuffer offsets[]

["Ville Syrjälä" <ville.syrjala@linux.intel.com>]

On Thu, Jul 05, 2012 at 01:29:36PM +0200, Daniel Vetter wrote:
> On Thu, May 24, 2012 at 09:01:24PM +0200, Daniel Vetter wrote:
> > 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@linux.intel.com wrote:
> > > > 
> > > > > From: Ville Syrjälä <ville.syrjala@linux.intel.com>
> > > > > 
> > > > > Take fb->offset[0] into account when calculating the linear and tile x/y
> > > > > offsets.
> > > > > 
> > > > > For non-tiled surfaces fb->offset[0] is simply added to the linear
> > > > > byte offset.
> > > > > 
> > > > > For tiled surfaces treat fb->offsets[0] as a byte offset into the
> > > > > linearized view of the surface. So we end up converting fb->offsets[0]
> > > > > into additional x and y offsets.
> > > > 
> > > > Do you have code using a non-zero offsets[0]?  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.
> 
> Ping about these testcases, ported to i-g-t ...

Sorry, haven't had time to look at those. I'm going on vacation after
tomorrow but I'll add a task to the list so I won't forget about this.

-- 
Ville Syrjälä
Intel OTC