JMS55 6d6810c90d Meshlet continuous LOD (#12755) ... Adds a basic level of detail system to meshlets. An extremely brief summary is as follows: * In `from_mesh.rs`, once we've built the first level of clusters, we group clusters, simplify the new mega-clusters, and then split the simplified groups back into regular sized clusters. Repeat several times (ideally until you can't anymore). This forms a directed acyclic graph (DAG), where the children are the meshlets from the previous level, and the parents are the more simplified versions of their children. The leaf nodes are meshlets formed from the original mesh. * In `cull_meshlets.wgsl`, each cluster selects whether to render or not based on the LOD bounding sphere (different than the culling bounding sphere) of the current meshlet, the LOD bounding sphere of its parent (the meshlet group from simplification), and the simplification error relative to its children of both the current meshlet and its parent meshlet. This kind of breaks two pass occlusion culling, which will be fixed in a future PR by using an HZB from the previous frame to get the initial list of occluders. Many, _many_ improvements to be done in the future https://github.com/bevyengine/bevy/issues/11518, not least of which is code quality and speed. I don't even expect this to work on many types of input meshes. This is just a basic implementation/draft for collaboration. Arguable how much we want to do in this PR, I'll leave that up to maintainers. I've erred on the side of "as basic as possible". References: * Slides 27-77 (video available on youtube) https://advances.realtimerendering.com/s2021/Karis_Nanite_SIGGRAPH_Advances_2021_final.pdf * https://blog.traverseresearch.nl/creating-a-directed-acyclic-graph-from-a-mesh-1329e57286e5 * https://jglrxavpok.github.io/2024/01/19/recreating-nanite-lod-generation.html, https://jglrxavpok.github.io/2024/03/12/recreating-nanite-faster-lod-generation.html, https://jglrxavpok.github.io/2024/04/02/recreating-nanite-runtime-lod-selection.html, and https://github.com/jglrxavpok/Carrot * https://github.com/gents83/INOX/tree/master/crates/plugins/binarizer/src * https://cs418.cs.illinois.edu/website/text/nanite.html   --------- Co-authored-by: Ricky Taylor <rickytaylor26@gmail.com> Co-authored-by: vero <email@atlasdostal.com> Co-authored-by: François <mockersf@gmail.com> Co-authored-by: atlas dostal <rodol@rivalrebels.com> Co-authored-by: Patrick Walton <pcwalton@mimiga.net>		2024-04-23 21:43:53 +00:00
..
3d_scene.rs	Migrate from LegacyColor to bevy_color::Color (#12163)	2024-02-29 19:35:12 +00:00
3d_shapes.rs	Implement percentage-closer filtering (PCF) for point lights. (#12910)	2024-04-10 20:16:08 +00:00
3d_viewport_to_world.rs	separating finite and infinite 3d planes (#12426)	2024-04-18 14:13:22 +00:00
animated_material.rs	Add hue traits (#12399)	2024-03-22 00:36:46 +00:00
anti_aliasing.rs	Migrate from LegacyColor to bevy_color::Color (#12163)	2024-02-29 19:35:12 +00:00
atmospheric_fog.rs	Migrate from LegacyColor to bevy_color::Color (#12163)	2024-02-29 19:35:12 +00:00
blend_modes.rs	Migrate from LegacyColor to bevy_color::Color (#12163)	2024-02-29 19:35:12 +00:00
bloom_3d.rs	Improve Bloom 3D lighting (#11981)	2024-03-07 15:20:38 +00:00
deferred_rendering.rs	Migrate from LegacyColor to bevy_color::Color (#12163)	2024-02-29 19:35:12 +00:00
fog.rs	Migrate from LegacyColor to bevy_color::Color (#12163)	2024-02-29 19:35:12 +00:00
generate_custom_mesh.rs	Clarify comment about camera coordinate system (#13056)	2024-04-23 14:58:28 +00:00
irradiance_volumes.rs	separating finite and infinite 3d planes (#12426)	2024-04-18 14:13:22 +00:00
lighting.rs	Fix pink colors in examples (#12451)	2024-03-18 17:44:46 +00:00
lightmaps.rs	fix example lightmaps after color migration (#12265)	2024-03-03 21:36:11 +00:00
lines.rs	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
load_gltf.rs	New Exposure and Lighting Defaults (and calibrate examples) (#11868)	2024-02-15 20:42:48 +00:00
meshlet.rs	Meshlet continuous LOD (#12755)	2024-04-23 21:43:53 +00:00
orthographic.rs	Migrate from LegacyColor to bevy_color::Color (#12163)	2024-02-29 19:35:12 +00:00
parallax_mapping.rs	Move close_on_esc to bevy_dev_tools (#12855)	2024-04-03 01:29:06 +00:00
parenting.rs	Migrate from LegacyColor to bevy_color::Color (#12163)	2024-02-29 19:35:12 +00:00
pbr.rs	Migrate from LegacyColor to bevy_color::Color (#12163)	2024-02-29 19:35:12 +00:00
reflection_probes.rs	Migrate from LegacyColor to bevy_color::Color (#12163)	2024-02-29 19:35:12 +00:00
render_to_texture.rs	Migrate from LegacyColor to bevy_color::Color (#12163)	2024-02-29 19:35:12 +00:00
shadow_biases.rs	Implement percentage-closer filtering (PCF) for point lights. (#12910)	2024-04-10 20:16:08 +00:00
shadow_caster_receiver.rs	Remove redundant imports (#12817)	2024-04-01 19:59:08 +00:00
skybox.rs	Migrate from LegacyColor to bevy_color::Color (#12163)	2024-02-29 19:35:12 +00:00
spherical_area_lights.rs	Migrate from LegacyColor to bevy_color::Color (#12163)	2024-02-29 19:35:12 +00:00
split_screen.rs	Fix "dark grey" colors becoming lighter in various examples (#12333)	2024-03-06 05:19:59 +00:00
spotlight.rs	Adding explanation to seeded rng used in examples (#12593)	2024-03-26 19:40:18 +00:00
ssao.rs	Migrate from LegacyColor to bevy_color::Color (#12163)	2024-02-29 19:35:12 +00:00
texture.rs	Migrate from LegacyColor to bevy_color::Color (#12163)	2024-02-29 19:35:12 +00:00
tonemapping.rs	Migrate from LegacyColor to bevy_color::Color (#12163)	2024-02-29 19:35:12 +00:00
transmission.rs	Fix green colors becoming darker in various examples (#12328)	2024-03-05 23:42:03 +00:00
transparency_3d.rs	Implement alpha to coverage (A2C) support. (#12970)	2024-04-15 20:37:52 +00:00
two_passes.rs	Migrate from LegacyColor to bevy_color::Color (#12163)	2024-02-29 19:35:12 +00:00
update_gltf_scene.rs	New Exposure and Lighting Defaults (and calibrate examples) (#11868)	2024-02-15 20:42:48 +00:00
vertex_colors.rs	Migrate from LegacyColor to bevy_color::Color (#12163)	2024-02-29 19:35:12 +00:00
wireframe.rs	Use WireframeColor to override global color (#13034)	2024-04-20 13:59:12 +00:00