Charles 8073362039 add globals to mesh view bind group (#5409) ... # Objective - It's often really useful to have access to the time when writing shaders. ## Solution - Add a UnifformBuffer in the mesh view bind group - This buffer contains the time, delta time and a wrapping frame count https://user-images.githubusercontent.com/8348954/180130314-97948c2a-2d11-423d-a9c4-fb5c9d1892c7.mp4 --- ## Changelog - Added a `GlobalsUniform` at position 9 of the mesh view bind group ## Notes The implementation is currently split between bevy_render and bevy_pbr because I was basing my implementation on the `ViewPlugin`. I'm not sure if that's the right way to structure it. I named this `globals` instead of just time because we could potentially add more things to it. ## References in other engines - Godot: <https://docs.godotengine.org/en/stable/tutorials/shaders/shader_reference/canvas_item_shader.html#global-built-ins> - Global time since startup, in seconds, by default resets to 0 after 3600 seconds - Doesn't seem to have anything else - Unreal: <https://docs.unrealengine.com/4.26/en-US/RenderingAndGraphics/Materials/ExpressionReference/Constant/> - Generic time value that updates every frame. Can be paused or scaled. - Frame count node, doesn't seem to be an equivalent for shaders: <https://docs.unrealengine.com/4.26/en-US/BlueprintAPI/Utilities/GetFrameCount/> - Unity: <https://docs.unity3d.com/Manual/SL-UnityShaderVariables.html> - time since startup in seconds. No mention of time wrapping. Stored as a `vec4(t/20, t, t*2, t*3)` where `t` is the value in seconds - Also has delta time, sin time and cos time - ShaderToy: <https://www.shadertoy.com/howto> - iTime is the time since startup in seconds. - iFrameRate - iTimeDelta - iFrame frame counter Co-authored-by: Charles <IceSentry@users.noreply.github.com>		2022-09-28 04:20:27 +00:00
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camera	Accept Bundles for insert and remove. Deprecate insert/remove_bundle (#6039)	2022-09-21 21:47:53 +00:00
color	Correctly use as_hsla_f32 in Add<Color> and AddAssign<Color>, fixes #5543 (#5546)	2022-08-17 14:00:10 +00:00
mesh	add Debug, Copy, Clone derives to Circle (#6009)	2022-09-18 02:03:10 +00:00
primitives	Very minor doc formatting changes (#5287)	2022-07-12 13:06:16 +00:00
render_graph	fix: grammar and typo fixes in rendergraph docs (#5710)	2022-08-16 20:46:46 +00:00
render_phase	remove copyless (#6100)	2022-09-27 18:11:40 +00:00
render_resource	log pipeline cache errors earlier (#6115)	2022-09-28 04:04:55 +00:00
renderer	Make Resource trait opt-in, requiring #[derive(Resource)] V2 (#5577)	2022-08-08 21:36:35 +00:00
texture	Add TextureFormat::Rg16Unorm support for Image and derive Resource for SpecializedComputePipelines (#5991)	2022-09-15 15:57:04 +00:00
view	Spawn now takes a Bundle (#6054)	2022-09-23 19:55:54 +00:00
extract_component.rs	Implement IntoIterator for &Extract<P> (#6025)	2022-09-20 00:29:10 +00:00
extract_param.rs	Exclusive Systems Now Implement System. Flexible Exclusive System Params (#6083)	2022-09-26 23:57:07 +00:00
extract_resource.rs	remove an unused import in release (#5320)	2022-07-14 23:43:57 +00:00
globals.rs	add globals to mesh view bind group (#5409)	2022-09-28 04:20:27 +00:00
lib.rs	add globals to mesh view bind group (#5409)	2022-09-28 04:20:27 +00:00
rangefinder.rs	Very minor doc formatting changes (#5287)	2022-07-12 13:06:16 +00:00
render_asset.rs	Make Resource trait opt-in, requiring #[derive(Resource)] V2 (#5577)	2022-08-08 21:36:35 +00:00
settings.rs	Make Resource trait opt-in, requiring #[derive(Resource)] V2 (#5577)	2022-08-08 21:36:35 +00:00
spatial_bundle.rs	Add associated constant IDENTITY to Transform and friends. (#5340)	2022-08-30 22:10:24 +00:00