Patrick Walton f9cc91d5a1 Intern mesh vertex buffer layouts so that we don't have to compare them over and over. (#12216) ... Although we cached hashes of `MeshVertexBufferLayout`, we were paying the cost of `PartialEq` on `InnerMeshVertexBufferLayout` for every entity, every frame. This patch changes that logic to place `MeshVertexBufferLayout`s in `Arc`s so that they can be compared and hashed by pointer. This results in a 28% speedup in the `queue_material_meshes` phase of `many_cubes`, with frustum culling disabled. Additionally, this patch contains two minor changes: 1. This commit flattens the specialized mesh pipeline cache to one level of hash tables instead of two. This saves a hash lookup. 2. The example `many_cubes` has been given a `--no-frustum-culling` flag, to aid in benchmarking. See the Tracy profile: <img width="1064" alt="Screenshot 2024-02-29 144406" src="https://github.com/bevyengine/bevy/assets/157897/18632f1d-1fdd-4ac7-90ed-2d10306b2a1e"> ## Migration guide * Duplicate `MeshVertexBufferLayout`s are now combined into a single object, `MeshVertexBufferLayoutRef`, which contains an atomically-reference-counted pointer to the layout. Code that was using `MeshVertexBufferLayout` may need to be updated to use `MeshVertexBufferLayoutRef` instead.		2024-03-01 20:56:21 +00:00
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src	Intern mesh vertex buffer layouts so that we don't have to compare them over and over. (#12216)	2024-03-01 20:56:21 +00:00
Cargo.toml	Migrate from LegacyColor to bevy_color::Color (#12163)	2024-02-29 19:35:12 +00:00