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Direct-rendering with cairo (cairo-drm)
Chris Wilson has been playing around with this (on i915/i945)
Results are already very promising
Gradients are 100 - 120x faster
Some painting operations are 50x faster (why?)
Text is 4x faster (needs more testing)
Brings XVideo and XRender together (using video as source)
Some of the work can be folded back to X server 2D driver
Longer-term makes more sense in pixman-drm