On Sat, 2009-01-31 at 13:18 +0100, Peter Verswyvelen wrote: > When I said Cairo felt rather slow, I was comparing it again fully > hardware accelerated solutions. > > > With Cairo I am unable to perform full smooth screen redraws of even > just a single solid rectangle, and when you are making ZUI (zoomable > user interfaces), full screen redraws are not uncommon. "Smooth" here > means at least 30 frames per second, but preferably 60 frames per > second. It seems not the number of shapes that are rendered is the > bottleneck, but the amount of pixels covered. At least that is what I > noticed. I guess this is because it is a 100% software renderer, and > it might have to perform per pixel conversion when copying to the > video card, but I really don't know.
The X11 backend is accelerated if your X server supports it. It uses the XRender extension. If you draw to an image surface then yes that is software rendering. If you're happy to be connected to the X server then you can still do off-screen drawing and again if your X server supports it that can be accelerated too. Some X servers accelerate some XRender operations and not others. I think some of the gradient fills are problematic. Duncan _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
