YUVToRGBConverter objects currently require a surfaceless EGL context in order to be properly released (see GLContextEGL::ReleaseYUVToRGBConverters()).

This isn't an issue yet, as these objects are only ever created on MacOS, from GLImageIOSurfaceEGL::CopyTexImage(), which is from a MacOS specific class, where surfaceless EGL contexts are always supported.

This might become an issue if other platforms attempt to create YUVToRGBConverter objects without supporting surfaceless EGL contexts.