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tsvm: fix palette not resetting

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minjaesong
2026-06-15 13:35:52 +09:00
parent cd04138573
commit e8112e78c8
1 changed files with 4 additions and 3 deletions
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7
tsvm_core/src/net/torvald/tsvm/peripheral/GraphicsAdapter.kt
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@@ -431,7 +431,7 @@ open class GraphicsAdapter(private val assetsRoot: String, val vm: VM, val confi
for (it in 0 until 1024) {
val rgba = DEFAULT_PALETTE[it / 4]
val channel = it % 4
rgba.shr((3 - channel) * 8).and(255) / 255f
paletteOfFloats[it] = rgba.shr((3 - channel) * 8).and(255) / 255f
}
}
2 -> {
@@ -450,7 +450,7 @@ open class GraphicsAdapter(private val assetsRoot: String, val vm: VM, val confi
for (it in 0 until 1024) {
val rgba = DEFAULT_PALETTE[it / 4]
val channel = it % 4
rgba.shr((3 - channel) * 8).and(255) / 255f
paletteOfFloats[it] = rgba.shr((3 - channel) * 8).and(255) / 255f
}
framebuffer.fillWith(arg1.toByte())
framebuffer2?.fillWith(arg2.toByte())
@@ -1392,7 +1392,8 @@ open class GraphicsAdapter(private val assetsRoot: String, val vm: VM, val confi
val highvalue = paletteOfFloats[offset * 2] // R, B
val lowvalue = paletteOfFloats[offset * 2 + 1] // G, A
return (highvalue.div(15f).toInt().shl(4) or lowvalue.div(15f).toInt()).toByte()
// channels are stored as 0..1 floats (n/15); recover the 4-bit nibble
return ((highvalue * 15f + 0.5f).toInt().shl(4) or (lowvalue * 15f + 0.5f).toInt()).toByte()
}
private fun pokePalette(offset: Int, byte: Byte) {