message: add IsTranslucent enum to RenderFlags
diff: /*---------------------------------------------------------------------------------------------
  | $Copyright: (c) 2018 Bentley Systems, Incorporated. All rights reserved. $
  *--------------------------------------------------------------------------------------------*/
  +import { GL } from "./GL";
  // Ordered list of render passes which produce a rendered frame.
  export const enum RenderPass {
  @@ -84,3 +85,5 @@ export const enum OvrFlags {
  Rgba = Rgb | Alpha,
  }
  +
  +export const enum IsTranslucent { No, Yes, Maybe }
  