A student I'm currently supervising found an interesting phenomenon on NVIDIA GPUs. When using trilinear interpolation with a 3D texture in Vulkan, the interpolation will not return interpolated values less than 1/2048, even if the texture stores 32-bit floating point values. In the image below, you can see a test case I created where a very small step size is used for volumetric path tracing and …

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 …