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@@ -1,3 +1,43 @@ +Release 2.20.1 (2012-07-22) +=========================== +A week in, grab the brown paper bags, for it is time to reveal a couple +of critical bugs that spoilt the 2.20.0 release. + +Firstly we have the restoration of DRI for i810. I am sure that the +solitary user will be overjoyed in a couple of years when a new xserver +is forced upon him. That enjoyment will be short-lived when as no actual +acceleration remains, not even shadow, for the chipset. + +Perhaps a little more wildly felt, I hope!, will be that the SNA +fallbacks were broken on 64-bit machines if they required clipping. One +little misplaced cast of a pointer, and the screen is filled with +corruption. + +Among the other tweaks this week: + +* A bug affecting gen4 handling of trapezoids was fixed, and CPU + overhead reduced. + https://bugs.freedesktop.org/show_bug.cgi?id=52158 + +* A fix for a bug causing corruption of a DRI2 unredirected client + window that was resized whilst under a compositor. + +* Support for snoopable buffers on non-LLC architectures, coming to + a future kernel. The aim to accelerate transfers between the CPU + and the GPU, in particular to dramatically improve readback + performance, and to further minimise clflushes. + +* Improvement to the composite performance on GT2 SandyBridge and + IvyBridge devices, in particular the render copy is significantly + improved. + +* Improved handling for when acceleration is disabled, including + permitting DRI2 to remain supported even if the X server believes + the GPU wedged. + +* Shadow support was dropped from UXA as it was neither complete nor + correct, use SNA instead. + Release 2.12.0 (2012-07-15) =========================== First the big news, a new acceleration method that aims to be faster and |