message: fix spec of emptyDepthTexture in Renderer
diff: @@ -152,7 +152,7 @@ namespace Renderer {
  let transparentBackground = false;
  - const emptyDepthTexture = ctx.resources.texture('image-depth', 'depth', 'ushort', 'nearest');
  + const emptyDepthTexture = ctx.resources.texture('image-uint8', 'rgba', 'ubyte', 'nearest');
  const sharedTexturesList: Textures = [
  ['tDepth', emptyDepthTexture]
  ];
  