Robert Swain 114d169dce Callable PBR functions (#4939) ... # Objective - Builds on top of #4938 - Make clustered-forward PBR lighting/shadows functionality callable - See #3969 for details ## Solution - Add `PbrInput` struct type containing a `StandardMaterial`, occlusion, world_position, world_normal, and frag_coord - Split functionality to calculate the unit view vector, and normal-mapped normal into `bevy_pbr::pbr_functions` - Split high-level shading flow into `pbr(in: PbrInput, N: vec3<f32>, V: vec3<f32>, is_orthographic: bool)` function in `bevy_pbr::pbr_functions` - Rework `pbr.wgsl` fragment stage entry point to make use of the new functions - This has been benchmarked on an M1 Max using `many_cubes -- sphere`. `main` had a median frame time of 15.88ms, this PR 15.99ms, which is a 0.69% frame time increase, which is within noise in my opinion. --- ## Changelog - Added: PBR shading code is now callable. Import `bevy_pbr::pbr_functions` and its dependencies, create a `PbrInput`, calculate the unit view and normal-mapped normal vectors and whether the projection is orthographic, and call `pbr()`!		2022-06-21 20:50:06 +00:00
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src	Callable PBR functions (#4939)	2022-06-21 20:50:06 +00:00
Cargo.toml	Move float_ord from bevy_core to bevy_utils (#4189)	2022-04-27 18:02:05 +00:00