Class RenderTarget

constructor

• new RenderTarget(options?, ...args): RenderTarget

• Creates a new RenderTarget instance. A color buffer or a depth buffer must be set.

  Parameters

  • Optionaloptions: {
        autoResolve: boolean;
        colorBuffer: Texture;
        colorBuffers: Texture[];
        depth: boolean;
        depthBuffer: Texture;
        face: number;
        flipY: boolean;
        name: string;
        samples: number;
        stencil: boolean;
    } = {}

    Object for passing optional arguments.

    • autoResolve: boolean

      If samples > 1, enables or disables automatic MSAA resolve after rendering to this RT (see RenderTarget#resolve). Defaults to true.

    • colorBuffer: Texture

      The texture that this render target will treat as a rendering surface.

    • colorBuffers: Texture[]

      The textures that this render target will treat as a rendering surfaces. If this option is set, the colorBuffer option is ignored. This option can be used only when GraphicsDevice#supportsMrt is true.

    • depth: boolean

      If set to true, depth buffer will be created. Defaults to true. Ignored if depthBuffer is defined.

    • depthBuffer: Texture

      The texture that this render target will treat as a depth/stencil surface (WebGL2 only). If set, the 'depth' and 'stencil' properties are ignored. Texture must have PIXELFORMAT_DEPTH or PIXELFORMAT_DEPTHSTENCIL format.

    • face: number

      If the colorBuffer parameter is a cubemap, use this option to specify the face of the cubemap to render to. Can be:

      • CUBEFACE_POSX
      • CUBEFACE_NEGX
      • CUBEFACE_POSY
      • CUBEFACE_NEGY
      • CUBEFACE_POSZ
      • CUBEFACE_NEGZ

      Defaults to CUBEFACE_POSX.

    • flipY: boolean

      When set to true the image will be flipped in Y. Default is false.

    • name: string

      The name of the render target.

    • samples: number

      Number of hardware anti-aliasing samples (not supported on WebGL1). Default is 1.

    • stencil: boolean

      If set to true, depth buffer will include stencil. Defaults to false. Ignored if depthBuffer is defined or depth is false.
  • Rest...args: any

  Returns RenderTarget

  Example

  // Create a 512x512x24-bit render target with a depth buffer
  const colorBuffer = new pc.Texture(graphicsDevice, {
      width: 512,
      height: 512,
      format: pc.PIXELFORMAT_RGB8
  });
  const renderTarget = new pc.RenderTarget({
      colorBuffer: colorBuffer,
      depth: true
  });
  
  // Set the render target on a camera component
  camera.renderTarget = renderTarget;
  
  // Destroy render target at a later stage. Note that the color buffer needs
  // to be destroyed separately.
  renderTarget.colorBuffer.destroy();
  renderTarget.destroy();
  camera.renderTarget = null;
  Copy

autoResolve

flipY

name

colorBuffer

• get colorBuffer(): Texture

• Color buffer set up on the render target.

  Returns Texture

depth

• get depth(): boolean

• True if the render target contains the depth attachment.

  Returns boolean

depthBuffer

• get depthBuffer(): Texture

• Depth buffer set up on the render target. Only available, if depthBuffer was set in constructor. Not available if depth property was used instead.

  Returns Texture

face

• get face(): number

• If the render target is bound to a cubemap, this property specifies which face of the cubemap is rendered to. Can be:

  • CUBEFACE_POSX
  • CUBEFACE_NEGX
  • CUBEFACE_POSY
  • CUBEFACE_NEGY
  • CUBEFACE_POSZ
  • CUBEFACE_NEGZ

  Returns number

height

• get height(): number

• Height of the render target in pixels.

  Returns number

samples

• get samples(): number

• Number of antialiasing samples the render target uses.

  Returns number

stencil

• get stencil(): boolean

• True if the render target contains the stencil attachment.

  Returns boolean

width

• get width(): number

• Width of the render target in pixels.

  Returns number

copy

• copy(source, color?, depth?): boolean

• Copies color and/or depth contents of source render target to this one. Formats, sizes and anti-aliasing samples must match. Depth buffer can only be copied on WebGL 2.0.

  Parameters

  • source: RenderTarget

    Source render target to copy from.
  • Optionalcolor: boolean

    If true, will copy the color buffer. Defaults to false.
  • Optionaldepth: boolean

    If true, will copy the depth buffer. Defaults to false.

  Returns boolean

  True if the copy was successful, false otherwise.

destroy

• destroy(): void

• Frees resources associated with this render target.

  Returns void

getColorBuffer

• getColorBuffer(index): Texture

• Accessor for multiple render target color buffers.

  Parameters

  • index: any

    Index of the color buffer to get.

  Returns Texture

  • Color buffer at the specified index.

resize

• resize(width, height): void

• Resizes the render target to the specified width and height. Internally this resizes all the assigned texture color and depth buffers.

  Parameters

  • width: number

    The width of the render target in pixels.
  • height: number

    The height of the render target in pixels.

  Returns void

resolve

• resolve(color?, depth?): void

• If samples > 1, resolves the anti-aliased render target (WebGL2 only). When you're rendering to an anti-aliased render target, pixels aren't written directly to the readable texture. Instead, they're first written to a MSAA buffer, where each sample for each pixel is stored independently. In order to read the results, you first need to 'resolve' the buffer - to average all samples and create a simple texture with one color per pixel. This function performs this averaging and updates the colorBuffer and the depthBuffer. If autoResolve is set to true, the resolve will happen after every rendering to this render target, otherwise you can do it manually, during the app update or similar.

  Parameters

  • Optionalcolor: boolean = true

    Resolve color buffer. Defaults to true.
  • Optionaldepth: boolean = !!this._depthBuffer

    Resolve depth buffer. Defaults to true if the render target has a depth buffer.

  Returns void