[Intel-gfx] [PATCH 4/5] drm/i915: Add a FIXME about FBC vs. fence. 90/270 degree rotation

[Chris Wilson]

Quoting Ville Syrjala (2017-11-16 19:14:50)
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> Currently we're pinning the fence for the rotated GTT view. That doesn't
> acually make any sense since the fence is used only for the FBC GTT
> tracking. For that we would want the fence for the normal GTT view
> instead of the rotated view. Too lazy to fix this now so just add a
> FIXME.

The rotated view can't have a fence as its vma is not fenceable.
-Chris