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ppu mode 5 because why not

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Matthew Berry 2020-11-06 00:39:11 -08:00
parent b94ea60e6f
commit 86d21e5f43
1 changed files with 9 additions and 0 deletions
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9
src/crab/ppu.cr
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@ -101,6 +101,15 @@ class PPU
@framebuffer[idx * 2 + 1] = @pram[pal_idx * 2 + 1]
end
@gba.display.draw @framebuffer
when 5
base = @dispcnt.display_frame_select ? 0xA000 : 0
128.times do |row|
160.times do |col|
@framebuffer[base + (row * 240 + col) * 2] = @vram[base + (row * 160 + col) * 2]
@framebuffer[base + (row * 240 + col) * 2 + 1] = @vram[base + (row * 160 + col) * 2 + 1]
end
end
@gba.display.draw @framebuffer
else abort "Invalid background mode: #{@dispcnt.bg_mode}"
end
end