JakubandGitHub 9ff6c57e03 GPU composite: submit every 1000 copies and render passes, not only between page cells (#3844) ...

The compositor submitted only between 2048x2048 page cells, so one cell of a deep stack
recorded every pass into a single command buffer: 700 full-size layers make 1403 render
passes, and wgpu-core opens two hal command buffers per pass. Metal allows 4096 command
buffers per queue, so a few thousand passes in one cell can lose the device.

run_cell now counts copies and render passes and, when a refresh may submit in between,
submits the batch after FLUSH_OPS (1000) of them, waiting for the previous batch as the
page-cell flush does. Chunk textures, uniforms and bind groups outlive the submit and the
queue keeps the order, so a chunk continues in the next command buffer. A device lost in
such a submit ends the refresh with an error instead of recording more work.

Not measurably slower on Vulkan (RTX 3090): perf_scenarios rows are within noise.

Test: many_layers_submit_inside_one_chunk (700 noise layers on a 64x48 document) needs
flushes > 0 inside one chunk and matches the CPU composite; main records all 1403 passes
without a flush.

2026-10-12 08:46:16 -04:00

..

device_loss.rs

GPU: crash-safe startup and device-loss fallback (#243, #4) (#252) (#252)

2026-10-05 12:05:22 -04:00

parity.rs

GPU composite: submit every 1000 copies and render passes, not only between page cells (#3844)

2026-10-12 08:46:16 -04:00

vector_mask.rs

Speed up large feathered mask refreshes (#2417)

2026-10-11 07:09:04 -04:00