message: Fix documents.
  The `vertSize` is 5 , but the content is not `positionX, positionY, colorR, colorG, colorB`.
diff: @@ -30,7 +30,7 @@ export default class SpriteRenderer extends ObjectRenderer
  /**
  * Number of values sent in the vertex buffer.
  - * positionX, positionY, colorR, colorG, colorB = 5
  + * aVertexPosition(2), aTextureCoord(1), aColor(1), aTextureId(1) = 5
  *
  * @member {number}
  */
  