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Meshlet single pass depth downsampling (SPD) (#13003) 
# Objective
- Using multiple raster passes to generate the depth pyramid is
extremely slow
- Pulling data from the source image is the largest bottleneck, it's
important to sample in a cache-aware pattern
- Barriers and pipeline drain between the raster passes is the second
largest bottleneck
- Each separate RenderPass on the CPU is _really_ expensive

## Solution
- Port [FidelityFX SPD](https://gpuopen.com/fidelityfx-spd) to WGSL,
replacing meshlet's existing multiple raster passes with a ~~single~~
two compute dispatches. Lack of coherent buffers means we have to do the
the last 64x64 tile from mip 7+ in a separate dispatch to ensure the mip
6 writes were flushed :(
- Workgroup shared memory version only at the moment, as the subgroup
operation is blocked by our upgrade to wgpu 0.20 #13186
- Don't enforce a power-of-2 depth pyramid texture size, simply scaling
by 0.5 is fine
2024-06-03 12:41:14 +00:00
..
bevy_a11y Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_animation Remove ClampColor (#13307) 2024-05-10 13:15:56 +00:00
bevy_app Simplify state transitions (#13616) 2024-06-01 21:00:38 +00:00
bevy_asset Allow AssetServer::load to acquire a guard item. (#13051) 2024-05-23 13:28:29 +00:00
bevy_audio Update to rodio 0.18 (#13612) 2024-06-02 14:25:51 +00:00
bevy_color Added a Grey trait, and implementations on baked-in colors. Fixes #13206 (#13237) 2024-05-26 12:53:50 +00:00
bevy_core Determine msrv for every standalone bevy_* crate. (#13211) 2024-05-13 18:26:41 +00:00
bevy_core_pipeline Add Skybox Motion Vectors (#13617) 2024-06-02 16:09:28 +00:00
bevy_derive Deprecate dynamic plugins (#13080) 2024-05-20 20:01:28 +00:00
bevy_dev_tools Refactor ci_testing and separate it from DevToolsPlugin (#13513) 2024-05-26 22:32:36 +00:00
bevy_diagnostic Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_dylib Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_dynamic_plugin Deprecate dynamic plugins (#13080) 2024-05-20 20:01:28 +00:00
bevy_ecs Add ability to clear all components on an entity via EntityWorldMut (#13588) 2024-05-31 16:42:03 +00:00
bevy_encase_derive Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_gilrs Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_gizmos Implemented GizmoPrimitive2d for Arc2d, CircularSegment, CircularSector, and make arc_2d use counter-clockwise angle. (#13610) 2024-06-01 12:30:34 +00:00
bevy_gltf glTF labels: add enum to avoid misspelling and keep up-to-date list documented (#13586) 2024-05-31 23:25:57 +00:00
bevy_hierarchy Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_input Separate state crate (#13216) 2024-05-09 18:06:05 +00:00
bevy_internal glTF labels: add enum to avoid misspelling and keep up-to-date list documented (#13586) 2024-05-31 23:25:57 +00:00
bevy_log Improve tracing layer customization (#13159) 2024-05-12 21:16:56 +00:00
bevy_macro_utils Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_math Implement ShapeSample for Extrusion<T> (#13567) 2024-05-30 12:08:28 +00:00
bevy_mikktspace Determine msrv for every standalone bevy_* crate. (#13211) 2024-05-13 18:26:41 +00:00
bevy_pbr Meshlet single pass depth downsampling (SPD) (#13003) 2024-06-03 12:41:14 +00:00
bevy_ptr add Debug for ptr types (#13498) 2024-05-24 21:25:11 +00:00
bevy_reflect Move bevy_math Reflect impls (#13520) 2024-05-27 14:15:22 +00:00
bevy_render Fix docs for RenderLayers (#13604) 2024-05-31 15:42:08 +00:00
bevy_scene Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_sprite unload unused images that are RenderAssetUsages::RENDER_WORLD (#13609) 2024-05-31 17:13:29 +00:00
bevy_state Combine transition systems of Substates (#13626) 2024-06-02 13:36:44 +00:00
bevy_tasks multi_threaded feature rename (#12997) 2024-05-06 20:49:32 +00:00
bevy_text Updates default Text font size to 24px (#13603) 2024-05-31 16:41:27 +00:00
bevy_time Adds doc note that Timer and Stopwatch must be progressed manually (#13441) 2024-05-20 19:46:25 +00:00
bevy_transform Allow bevy_transform to be used as a barebones dependency (#13533) 2024-06-01 11:34:49 +00:00
bevy_ui Fix image measure function to apply inherent aspect ratio to style sizes (#13555) 2024-05-30 18:37:39 +00:00
bevy_utils Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00
bevy_window Ensure clean exit (#13236) 2024-05-12 15:56:01 +00:00
bevy_winit Ensure clean exit (#13236) 2024-05-12 15:56:01 +00:00