Engine API Reference - v2.24.0-beta.10
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    Class CasEffect

    The sharpening effect, using contrast adaptive sharpening (CAS). This can be used to increase the sharpness of the rendered image, often to counteract the blurriness of the TAA effect, or of rendering to a lower resolution render target.

    Applied to the scene image, ahead of the other effects.

    Every CameraFrame constructs and registers one, whose sharpness is set through CameraFrame#rendering, and which is available as cameraFrame.getEffect('cas').

    Hierarchy (View Summary)

    Index
    cameraFrame: CameraFrame | null = null

    The camera frame the effect is registered with, or null.

    The graphics device.

    enabled: boolean = true

    Whether the effect is enabled. An effect can additionally disable itself from its own parameters, see CameraFrameEffect#active.

    sharpness: number = 0

    The sharpening intensity, 0-1 range. Defaults to 0, making it disabled.

    • get active(): boolean

      Gets whether the effect contributes to the frame. A zero sharpness disables it, the sharpness being the effect's on/off control.

      Returns boolean

    • get chunkName(): string

      Gets the name the compose chunk can be overridden under in ShaderChunks, the same way as the built-in chunks. Derived from the id as compose<Id>PS unless given.

      Returns string

    • get defineName(): string

      Gets the define set on the compose shader while the effect is active: the id in upper snake case, colorEnhance giving COLOR_ENHANCE.

      Returns string

    • get entryPoint(): string

      Gets the name of the function the composition calls at the effect's slot. Derived from the id as apply<Id> unless given. The signature depends on the slot: colour slots take (vec3 color, vec2 uv) and return the colour, COMPOSESLOT_SCENE takes and returns a vec4.

      Returns string

    • get requires(): string[]

      Gets the frame resources the effect needs, the FRAMERESOURCE_* constants - for its passes, or for its compose chunk, such as the scene depth. The camera frame provides them while the effect is active. Requirements which depend on the device are computed when constructing the effect; override this as a getter when they depend on a parameter, and the camera frame provides what it returns from the next CameraFrame#update.

      Returns string[]

    • get slot(): string | null

      Gets the compose slot the entry function is called at, or null for an effect that does not take part in the composition.

      Returns string | null

    • Destroys the effect, removing it from its camera frame if it is still registered and releasing everything it owns, the passes it created included. Subclasses which create resources in their constructor release them in an override, calling super.destroy(). The removal takes effect for the frames rendered after the next CameraFrame#update, which is due before the next frame renders.

      Returns void

    • Sets a define on the compose shader. The define persists until changed, so fixed defines can be set once in the constructor and those depending on the parameters from CameraFrameEffect#update. A value of false, null or undefined removes it. Changing a define rebuilds the compose shader.

      Parameters

      • name: string

        The define name.

      • value: any

        The value.

      Returns void