Flipping RenderTexture's sprite instead of scaling it by -1
Merge pull request #6300 from elvman/develop

Flipping RenderTexture's sprite instead of scaling it by -1
Enable depth test in test case : TilemapTest->TMXOrthoVertexZ.
Merge pull request #6338 from natural-law/develop

Enable depth test in test case : TilemapTest->TMXOrthoVertexZ.