Tvrtko Ursulin 30a1360f6a igt_fb: Transfer existing content to Cairo surface for Y/Yf frame buffers
Rendering into Y and Yf tiled frame buffers with Cairo was losing the
previous content ie. was starting from black. This is different than the
behaviour with linear and X tiled so make it the same by blitting the
initial content when creating the rendering context.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-04-29 15:02:19 +01:00
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