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[dsp] Fix display instruction

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Atreya Bain
2024-03-05 22:21:59 +05:30
parent 2e6410ef90
commit ff25f1aba3
2 changed files with 15 additions and 10 deletions
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10
src/device/device.rs
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@@ -290,10 +290,14 @@ impl Device {
for i in 0..n as usize {
let index = Self::get_framebuffer_index(x, y + i);
let slice_from_memory = self.memory[self.registers.i as usize + i];
// if we are drawing below the screen
if (y+i)>=Self::FRAME_BUFFER_HEIGHT {
log::trace!("Overdraw detected, skipping");
continue;
}
for bit_index in (0..8).rev() {
// if i'm going to the next line, stop
if Self::get_framebuffer_index(0, y + 1) == index {
// if going out of the screen, stop
if Self::get_framebuffer_index(0, y+i + 1) <= (index + (7 - bit_index)) {
break;
}
let bit_is_true = (slice_from_memory & (1 << bit_index)) == (1 << bit_index);