Class PrimitiveCompositor

attributes

currentSamplerUnit

currentShader

defaultShader

gl

mode

gl.TRIANGLES
Copy

projectionUniform

renderer

stride

useIndexBuffer

validatedShaders

vertexData

vertexSize

vertexState

viewMatrix

addAttribute

• addAttribute(
      name: string,
      size: number,
      type: number,
      normalized: boolean,
      offset: number,
  ): void

  add vertex attribute property definition to the batcher

  Parameters

  • name: string

    name of the attribute in the vertex shader

  • size: number

    number of components per vertex attribute. Must be 1, 2, 3, or 4.

  • type: number

    data type of each component in the array

  • normalized: boolean

    whether integer data values should be normalized into a certain range when being cast to a float

  • offset: number

    offset in bytes of the first component in the vertex attribute array

  Returns void

addIndices

• addIndices(indices: number[]): void

  Add index values to the index buffer (only for indexed batchers). Indices are rebased relative to the current vertex count.

  Parameters

  • indices: number[]

    array of index values to add

  Returns void

bind

• bind(): void

  called by the WebGL renderer when a compositor become the current one

  Returns void

drawVertices

• drawVertices(mode: number, verts: Point[], vertexCount?: number): void

  Draw an array of vertices

  Parameters

  • mode: number

    primitive type to render (gl.POINTS, gl.LINE_STRIP, gl.LINE_LOOP, gl.LINES, gl.TRIANGLE_STRIP, gl.TRIANGLE_FAN, gl.TRIANGLES)

  • verts: Point[]

    an array of vertices

  • OptionalvertexCount: number = verts.length

    amount of points defined in the points array

  Returns void

flush

• flush(mode?: number): void

  Flush batched vertex data to the GPU

  Parameters

  • Optionalmode: number = ...

    the GL drawing mode

  Returns void

setProjection

• setProjection(matrix: Matrix3d): void

  set/change the current projection matrix

  Parameters

  • matrix: Matrix3d

    the new projection matrix

  Returns void

unbind

• unbind(): void

  called by the WebGL renderer when this batcher is being replaced by another. Attribute state no longer needs disabling — it lives in this batcher's vertex-state object and the incoming batcher's bind() replaces the binding wholesale. Kept as a lifecycle hook: subclasses override it to restore mode-specific GL state (see MeshBatcher's blend/depth restore).

  Returns void

useShader

• useShader(shader: GLShader): void

  Select the shader to use for compositing

  Parameters

  • shader: GLShader

    a reference to a GLShader instance

  Returns void

  See

  GLShader