mental ray Architectural and Design Visualization Shader Library

2.4 Quick Guide to the Material Parameters 17• brdf 0 degree refl The user defined reflectivity curve value for surfaces facing theviewer.• brdf 90 degree refl The user defined reflectivity curve value for grazing surfaces.• brdf curve The user defined reflectivity curve shape.• brdf conserve energy When on, makes sure that energy is conserved. Keep this on!• intr grid density Interpolation grid density.• intr refl samples Number of interpolation samples for reflections.• intr refl ddist on Enable “Detail Distance”• intr refl ddist The detail distance.• intr refr samples Number of interpolation samples for refraction.• single env sample Do only a single environment sample even if multiple reflectivityrays are traced. Used together with mia envblur.• refl falloff on Enable distance falloff for reflections• refl falloff dist The distance at which no reflections are seen.• refl falloff color on Enable the falloff color.color.When off, falls of to the environment• refl falloff color The falloff color when above is on.• refl depth The trace depth for reflections.• refl cutoff The importance cutoff for reflections.• refr falloff on Enable distance falloff for refractions (transparency).• refr falloff dist The distance at where no transparency is seen or when the falloff“color” is reached.• refr falloff color on When off, reflections fall off to black (total absorption). Whenon, falls off to the given color tint.• refr falloff color The color tintint for reflections per distance travelled in the medium.• refr depth The trace depth for refractions.• refr cutoff The importance cutoff for refractions.• indirect multiplier The weighting of indirect illumination (FG, GI, Caustics)• fg quality The quality of FG• fg quality w The weighting of above parameter (used for texture mapping).• ao on Enable Ambient Occlusion (AO).• ao samples Number of AO probe rays.