docs: function DotScreenFilter()
  {
      core.AbstractFilter.call(this,
          // vertex shader
          null,
          // fragment shader
          fs.readFileSync(__dirname + '/dotScreen.frag', 'utf8'),
          // custom uniforms
          {
              scale:      { type: '1f', value: 1 },
              angle:      { type: '1f', value: 5 },
              dimensions: { type: '4fv', value: [0, 0, 0, 0] }
          }
      );
  }