This is an update of the article "Fragment Shader Interlock Performance (α Compositing)", where I previously had a look at the performance of a GPU feature called fragment shader interlock for alpha composition. In this article, I said: I would love to also test whether fragment shader interlock also comes out as the performance winner on AMD hardware, but unfortunately AMD does not …

Over the last decades, how GPUs can be used radically evolved. In the olden days™, GPUs had specialized units for vertex and fragment processing. Due to multiple reasons, one being that different applications may utilize these different types of units to different degrees, a shift to unified units happened that would perform both vertex and fragment processing. For a more in-depth view on the …