message: Region parameter for Renderer.generateTexture()
diff: @@ -263,20 +263,22 @@ export default class AbstractRenderer extends EventEmitter
  * @param {PIXI.DisplayObject} displayObject - The displayObject the object will be generated from
  * @param {number} scaleMode - Should be one of the scaleMode consts
  * @param {number} resolution - The resolution / device pixel ratio of the texture being generated
  + * @param {PIXI.Rectangle} [region] - The region of the displayObject, that shall be rendered,
  + * if no region is specified, defaults to the local bounds of the displayObject.
  * @return {PIXI.Texture} a texture of the graphics object
  */
  - generateTexture(displayObject, scaleMode, resolution)
  + generateTexture(displayObject, scaleMode, resolution, region)
  {
  - const bounds = displayObject.getLocalBounds();
  + region = region || displayObject.getLocalBounds();
  // minimum texture size is 1x1, 0x0 will throw an error
  - if (bounds.width === 0)bounds.width = 1;
  - if (bounds.height === 0)bounds.height = 1;
  + if (region.width === 0) region.width = 1;
  + if (region.height === 0) region.height = 1;
  - const renderTexture = RenderTexture.create(bounds.width | 0, bounds.height | 0, scaleMode, resolution);
  + const renderTexture = RenderTexture.create(region.width | 0, region.height | 0, scaleMode, resolution);
  - tempMatrix.tx = -bounds.x;
  - tempMatrix.ty = -bounds.y;
  + tempMatrix.tx = -region.x;
  + tempMatrix.ty = -region.y;
  this.render(displayObject, renderTexture, false, tempMatrix, true);
  