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Full-screen clears measured on a PSP (pspautotests gpu/timing/blittiming): 0.49ms on a 16-bit framebuffer whatever is cleared, 0.69ms on 8888, 1.02ms on 8888 with depth. Charging them may help games that spin hard on an empty screen, but it's off (chargeClearTime) until tried on some. The video blit cost moves into the same function, now EstimateFillCycles. Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
To get to 100% compatibility, we will need a software renderer as there are games out there that do tricks that can't really be faked in a sensible way. Useful for homebrew too that mix sw and accel rendering.