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by toast0
1880 days ago
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I don't know if the GameBoy PPU has the background vs foreground split. The background processing was pretty reasonable, and once you got it kind of working, it was fun to debug and get it actually working. My favorite thing was when I was processing everything in the wrong order so the menu of the rom I was using to test had all the words backwards. But the foreground / object sprites have this huge pipeline. IIRC, the PPU determines which sprites to draw in line X + 1 during line X. After that, it has to load the data for each object, etc etc. It was just discouraging. Plus since my frame rate is so low, I have to sit at a blank screen for quite some time waiting for the game to show anything, and longer for the demo to start (I don't have controls)... Anyhow, glad I'm not alone ;) |
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