This is another update of the articles "Fragment Shader Interlock Performance (α Compositing)" and "Fragment Shader Interlock Performance on the Steam Deck", where I previously had a look at the performance of a GPU feature called fragment shader interlock for alpha composition. In the first article, I was not able to test the performance on AMD GPUs, as the fragment shader …

When I supervised a student implementing different image denoisers into my line renderer LineVis, we faced the problem that SVGF, one of the most often used denoisers for real-time path traced applications, is dependent on ∇z(p), which the paper describes as the "gradient of clip-space depth with respect to screenspace coordinates"1 at the point p. It is used in formula (3) of the paper …