Function: createBloomEcsSystem()
createBloomEcsSystem(
renderContext):EcsSystem<[CameraEcsComponent,BloomEcsComponent]>
Defined in: rendering/systems/bloom-system.ts:55
Creates a bloom post-processing system: an additive glow around the brightest parts of the scene.
For each camera with both a renderTarget and a BloomEcsComponent,
extracts the pixels brighter than threshold into a downsampled scratch
buffer, blurs them with the same separable technique as
createGaussianBlurEcsSystem, then adds the blurred result back onto the
camera's renderTarget. Cameras without a renderTarget, or without a
BloomEcsComponent (attach one with addBloomComponent), are left untouched.
Must be registered after the render system (so there's a scene to bloom)
and before the present system (so the result gets drawn to the canvas).
If a camera also has a GaussianBlurEcsComponent, register this system
before the blur system, so the glow gets softened along with the rest of
the scene rather than sharpening it back up afterwards.
Parameters
renderContext
The rendering context
Returns
EcsSystem<[CameraEcsComponent, BloomEcsComponent]>
The bloom ECS system