r.Filter.LoopMode

Controls when to use either dynamic or unrolled loops to iterates over the Gaussian filteringThis passes is used for Gaussian Blur, Bloom and Depth of Field. The dynamic loop allowup to 128 samples versus the 32 samples of unrolled loops, but add an additional cost fothe loop's stop test at every iterations 0: Unrolled loop only (default; limited to 32 samples) 1: Fall back to dynamic loop if needs more than 32 samples 2: Dynamic loop only.