If we need to handle a FillRectangles request that is larger than the 3D
pipeline can handle, we need to split that operation up into smaller
chunks. This is achieved by redirecting the rendering through a view of
the surface (offset so that coordinates are within range), or else we
have to fallback to creating temporary surfaces.
If we fail to do so, we should hit an assertion that the render target
fits within the 3D pipeline inside gen4_emit_drawing_rectangle()
Reported-by: Zdenek Kabelac <zdenek.kabelac@gmail.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>