Class MaskStep

gpu-pipeline/webgl/gl-class.js:151–161

// A GPU processing step.
class MaskStep {
    constructor(gl) {
      this.proc = new GlShaderProcessor(gl, MASK_SHADER);
    }
    process(frame, mask) {
      this.proc.startProcessFrame(frame.width, frame.height);
      this.proc.bindTextures(
          [['frame', frame], ['mask', mask]]);
      return this.proc.finalizeProcessFrame();
    }
  }