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    Class ShaderPass

    Used to apply postprocessing, i.e. draw meshes to a Texture and then draw a FullscreenPlane using that texture as an input.

    A ShaderPass could either post process the whole scene or just a bunch of meshes using a specific RenderTarget.

    // set our main GPUCurtains instance
    const gpuCurtains = new GPUCurtains({
      container: '#canvas' // selector of our WebGPU canvas container
    })

    // set the GPU device
    // note this is asynchronous
    await gpuCurtains.setDevice()

    // create a ShaderPass
    const shaderPass = new ShaderPass(gpuCurtain, {
      label: 'My shader pass',
      shaders: {
        fragment: {
          code: shaderPassCode, // assume it is a valid WGSL fragment shader
        },
      },
    })

    Hierarchy (View Summary)

    Index
    constructor
    type size uuid index renderer material geometry outputTarget additionalOutputTargets? renderBundle renderOrder _transparent _ready userData _onReadyCallback _onBeforeRenderCallback _onRenderCallback _onAfterRenderCallback _onAfterResizeCallback onReady onBeforeRender onRender onAfterRender onAfterResize inputTarget renderTexture options
    autoRender ready transparent textures uniforms storages visible
    resize mouseToPlaneCoords setRenderer loseContext restoreContext setShaders useGeometry computeGeometry setGeometry setRenderingOptionsForRenderPass useMaterial setMaterial setMaterialGeometryAttributes createMediaTexture createTexture addTexture setOutputTarget setRenderBundle resizeTextures onBeforeRenderScene onBeforeRenderPass onRenderPass renderPass onAfterRenderPass render remove destroy cleanupRenderMaterialParameters setInputTarget addToScene removeFromScene
    type: string

    The type of the FullscreenPlane.

    size: { document: RectBBox }

    Object defining the FullscreenPlane size.

    Type Declaration

    • document: RectBBox

      document HTML size.

    uuid: string

    The universal unique id of the MeshBaseClass.

    index: number

    Index of this MeshBaseClass, i.e. creation order.

    renderer: Renderer

    The Renderer used.

    material: RenderMaterial

    RenderMaterial used by this MeshBaseClass.

    geometry: AllowedGeometries

    Geometry used by this MeshBaseClass.

    outputTarget: RenderTarget

    RenderTarget to render this Mesh to instead of the canvas context, if any.

    additionalOutputTargets?: RenderTarget[]

    Additional output RenderTarget onto which render this Mesh, besides the main outputTarget or screen. Useful for some effects that might need to render the same Mesh twice or more. Beware tho that the Mesh pipeline has to exactly fit the provided RenderTarget render passes descriptors as no checks will be performed here.

    renderBundle: RenderBundle

    RenderBundle used to render this Mesh, if any.

    renderOrder: number

    Controls the order in which this MeshBaseClass should be rendered by our Scene.

    _transparent

    _transparent: boolean

    Whether this MeshBaseClass should be treated as transparent. Impacts the render pipeline blend properties.

    _ready

    _ready: boolean

    Flag indicating whether this MeshBaseClass is ready to be drawn.

    userData: Record<string, unknown>

    Empty object to store any additional data or custom properties into your Mesh.

    _onReadyCallback

    _onReadyCallback: () => void

    Function assigned to the onReady callback.

    _onBeforeRenderCallback

    _onBeforeRenderCallback: () => void

    function assigned to the onBeforeRender callback.

    _onRenderCallback

    _onRenderCallback: () => void

    function assigned to the onRender callback.

    _onAfterRenderCallback

    _onAfterRenderCallback: () => void

    Function assigned to the onAfterRender callback.

    _onAfterResizeCallback

    _onAfterResizeCallback: () => void

    function assigned to the onAfterResize callback.

    onReady: (callback: () => void) => MeshBaseClass | ProjectedMeshBaseClass

    Callback to execute when a Mesh is ready - i.e. its material and geometry are ready.

    Type Declaration

    onBeforeRender: (callback: () => void) => MeshBaseClass | ProjectedMeshBaseClass

    Callback to execute before updating the Scene matrix stack. This means it is called early and allows to update transformations values before actually setting the Mesh matrices (if any). This also means it won't be called if the Mesh has not been added to the Scene. The callback won't be called if the Renderer is not ready or the Mesh itself is neither ready nor visible.

    Type Declaration

    onRender: (callback: () => void) => MeshBaseClass | ProjectedMeshBaseClass

    Callback to execute right before actually rendering the Mesh. Useful to update uniforms for example. The callback won't be called if the Renderer is not ready or the Mesh itself is neither ready nor visible.

    Type Declaration

    onAfterRender: (callback: () => void) => MeshBaseClass | ProjectedMeshBaseClass

    Callback to execute just after a Mesh has been rendered. The callback won't be called if the Renderer is not ready or the Mesh itself is neither ready nor visible.

    Type Declaration

    onAfterResize: (callback: () => void) => MeshBaseClass | ProjectedMeshBaseClass

    Callback to execute just after a Mesh has been resized.

    Type Declaration

    inputTarget: RenderTarget

    Optional input RenderTarget to assign to the ShaderPass. Used to automatically copy the content of the given RenderTarget texture into the ShaderPass renderTexture.

    renderTexture: Texture

    The Texture that contains the input content to be used by the ShaderPass. Can also contain the ouputted content if copyOutputToRenderTexture is set to true.

    options: ShaderPassOptions

    Options used to create this ShaderPass

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