Function toStep

Parameters

• api: {
      buffer: any;
      clear: any;
      command: any;
  }

  An API for GL resources.

  • buffer: any

    Function to set up a GL buffer.

  • clear: any

    Function to clear GL view or framebuffer.

  • command: any

    Function to create a GL render pass, given options, to be called later with options; api if not given.
• state: {
      maps: {
          passes: number[][];
      };
      merge: undefined | {
          texture: undefined | {
              subimage: any;
          };
          update: undefined | Function;
      };
      pre: undefined | string;
      vert: undefined | string;
      frag: string;
      uniforms: any;
      positions: any;
      count: undefined | number;
      pipeline: any;
      verts: undefined | string[];
      frags: undefined | string[];
  } = {}

  The gpgpu state to use. See toData and mapGroups.

  • maps: {
        passes: number[][];
    }

    How values are grouped per-texture per-pass per-step. See mapGroups.

    • passes: number[][]

  • merge: undefined | {
        texture: undefined | {
            subimage: any;
        };
        update: undefined | Function;
    }

    Any merged state texture; uses separate state textures if not given.

  • pre: undefined | string

    The namespace prefix; preDef by default.

  • vert: undefined | string

    The step vertex shader GLSL; a simple flat screen shader if not given.

  • frag: string

    The step fragment shader GLSL.

  • uniforms: any

    The step uniforms; modifies any given. See toUniforms.

  • positions: any

    The step position attributes; 3 points of a large flat triangle if not given.

  • count: undefined | number

    The number of elements/attributes to draw.

  • pipeline: any

    Any GL command properties to mix in overriding those ones added here; all passed to api.command.

  • verts: undefined | string[]

    Preprocesses and caches vertex GLSL code per-pass if given, otherwise processes just-in-time before each pass.

  • frags: undefined | string[]

    Preprocesses and caches fragment GLSL code per-pass, otherwise processes just-in-time before each pass.
• Optionalto: any = state

  The object to set up. Modifies the given state object by default.