[Bug 93594] Flickering Shadows in The Talos Principle

https://bugs.freedesktop.org/show_bug.cgi?id=93594

--- Comment #17 from Roland Scheidegger sroland@vmware.com --- (In reply to Nicolai Hähnle from comment #16)

One annoying aspect of this language is that one can reasonably read it as non-uniformity only being relevant for non-helper fragments. If a pixel quad is partial covered by the original primitive, and discard is used in a way that keeps the covered pixels but discard the helper ones, should derivatives be defined or not?

That's a good question... My interpretation would be that derivatives should be undefined in this case if only because otherwise things get even more complex...