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Really slow? On a 320x240 pixels framebuffer? Come on, I used to do that fast enough using a 1 MHz 6809 >20 years ago. Nowadays, well, things are even faster and on an SXGA (1280x1024) framebuffer, no "accelleration" used at all (all windows are in offscreen framebuffers, a single MPC5200 at 400 MHz does the whole thing, its DMA doing system memory (where offscreen window buffers are) -> PCI framebuffer memory (over a 66 MHz/32 bit PCI).
Here are some screenshots, I toyed with a new system a while ago:
Of course 2D accelleration can be useful, (has been to me when all the CPU I had was a 25 MHz 68340 with 1M system RAM and an 800x600 pixles,
16 bpp screen...), as you suggest, but not in the slow context of the OP QVGA, his only issue seems to be how to have the framebuffer shown on a TFT module.Dimiter
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