TestPostFiltersCompositing not working

Development
1

Hi,
the TestPostFiltersCompositing is not working anymore (since 3.1?). I assume the problem is the missing alpha component which is not passed when the ColorOverlayFilter was applied. If I override the default texture pass format in the ColorOverlayFilter to RGBA8 it is working again:

@Override
protected Format getDefaultPassTextureFormat()
{
	return Format.RGBA8; // instead of Format.RGB111110F
}

Before:

After:

So is it the right way to generally force the ColorOverlayFilter to override the method or to only override the format for the TestPostFilersComposting like this?:

...		
guifpp.addFilter(new ColorOverlayFilter(ColorRGBA.Red)
{
	@Override
	protected Format getDefaultPassTextureFormat()
	{
		return Format.RGBA8;
	}
});
...

I could create a PR to fix this bug.

regards
Alrik