bevy/crates/bevy_render
Patrick Walton f15437e4dc
Rewrite the multidrawable batch set builder for performance. (#17923)
This commit restructures the multidrawable batch set builder for better
performance in various ways:

* The bin traversal is optimized to make the best use of the CPU cache.

* The inner loop that iterates over the bins, which is the hottest part
of `batch_and_prepare_binned_render_phase`, has been shrunk as small as
possible.

* Where possible, multiple elements are added to or reserved from GPU
buffers as a batch instead of one at a time.

* Methods that LLVM wasn't inlining have been marked `#[inline]` where
doing so would unlock optimizations.

This code has also been refactored to avoid duplication between the
logic for indexed and non-indexed meshes via the introduction of a
`MultidrawableBatchSetPreparer` object.

Together, this improved the `batch_and_prepare_binned_render_phase` time
on Caldera by approximately 2×.

Eventually, we should optimize the batchable-but-not-multidrawable and
unbatchable logic as well, but these meshes are much rarer, so in the
interests of keeping this patch relatively small I opted to leave those
to a follow-up.
2025-02-20 11:45:47 +00:00
..
macros Harden proc macro path resolution and add integration tests. (#17330) 2025-02-09 19:45:45 +00:00
src Rewrite the multidrawable batch set builder for performance. (#17923) 2025-02-20 11:45:47 +00:00
Cargo.toml Build batches across phases in parallel. (#17764) 2025-02-13 00:02:20 +00:00
LICENSE-APACHE Cleanup publish process (#17728) 2025-02-09 17:46:19 +00:00
LICENSE-MIT Cleanup publish process (#17728) 2025-02-09 17:46:19 +00:00
README.md Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00

Bevy Render

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