message: sreenshot tweaks
  don't turn of screenspace antialiasing
  use higher numbr of AO samples than default
diff: @@ -108,6 +108,7 @@ class ViewportScreenshotHelper extends PluginComponent {
  private createPass(mutlisample: boolean) {
  const c = this.plugin.canvas3d!;
  const { colorBufferFloat, textureFloat } = c.webgl.extensions;
  + const aoProps = this.plugin.canvas3d!.props.postprocessing.occlusion;
  return this.plugin.canvas3d!.getImagePass({
  transparentBackground: this.values.transparent,
  cameraHelper: { axes: this.values.axes },
  @@ -117,7 +118,9 @@ class ViewportScreenshotHelper extends PluginComponent {
  },
  postprocessing: {
  ...c.props.postprocessing,
  - antialiasing: { name: 'off', params: {} }
  + occlusion: aoProps.name === 'on'
  + ? { name: 'on', params: { ...aoProps.params, samples: 128 } }
  + : aoProps
  }
  });
  }
  @@ -130,13 +133,16 @@ class ViewportScreenshotHelper extends PluginComponent {
  private _imagePass: ImagePass;
  get imagePass() {
  if (this._imagePass) {
  + const aoProps = this.plugin.canvas3d!.props.postprocessing.occlusion;
  this._imagePass.setProps({
  cameraHelper: { axes: this.values.axes },
  transparentBackground: this.values.transparent,
  // TODO: optimize because this creates a copy of a large object!
  postprocessing: {
  ...this.plugin.canvas3d!.props.postprocessing,
  - antialiasing: { name: 'off', params: {} }
  + occlusion: aoProps.name === 'on'
  + ? { name: 'on', params: { ...aoProps.params, samples: 128 } }
  + : aoProps
  }
  });
  return this._imagePass;
  