sawyer/picocalc-os-rs
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fix framebuffer leaving stale tiles

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sawyer bristol
2025-11-18 15:43:58 -07:00
parent cc31cb4711
commit 13eb1eb75c
1 changed files with 12 additions and 7 deletions
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15
kernel/src/framebuffer.rs
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@@ -261,14 +261,15 @@ impl<'a> AtomicFrameBuffer<'a> {
// Check for dirty tile
if self.dirty_tiles[row_start_idx + col].swap(false, Ordering::Acquire) {
let run_start = col;
let mut scan_col = col;
let mut run_len = 1;
// Extend run while contiguous dirty tiles and within MAX_BATCH_TILES
while col + 1 < NUM_TILE_COLS
while scan_col + 1 < NUM_TILE_COLS
&& self.dirty_tiles[row_start_idx + col + 1].load(Ordering::Acquire)
&& run_len < MAX_BATCH_TILES
{
col += 1;
scan_col += 1;
run_len += 1;
}
@@ -293,6 +294,8 @@ impl<'a> AtomicFrameBuffer<'a> {
&self.batch_tile_buf[..run_len * TILE_SIZE * TILE_SIZE],
)
.await?;
col = scan_col;
}
col += 1;
@@ -346,8 +349,7 @@ impl<'a> DrawTarget for AtomicFrameBuffer<'a> {
}
}
if changed
&& let Some(rect) = dirty_rect {
if changed && let Some(rect) = dirty_rect {
self.mark_tiles_dirty(rect);
}
@@ -411,7 +413,10 @@ impl<'a> DrawTarget for AtomicFrameBuffer<'a> {
0,
self.size().width as u16 - 1,
self.size().height as u16 - 1,
core::iter::repeat_n(RawU16::from(color).into_inner(), (self.size().width * self.size().height) as usize),
core::iter::repeat_n(
RawU16::from(color).into_inner(),
(self.size().width * self.size().height) as usize,
),
)?;
for tile in self.dirty_tiles.iter() {