FurMark is a small OpenGL benchmark focused on fur rendering. The rendering algorithm is highly multipass (100 passes) and each pass (or layer) uses a GLSL (OpenGL Shading Language) vertex / pixel shader to make the hairs finer and finer. To increase the fur realism, two dynamic lights are used for self shadowing. The benchmark offers several options allowing the user to tweak the rendering: fullscreen / windowed mode, MSAA selection, window size, duration. The benchmark also includes a GPU Burner mode (stability test).