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If a sample contributes less than this amount (as a percentage), sampling is stopped. Threshold Threshold for adaptive sampling. Set this to something lower than zero to get a blurry refraction. Settings for the glossiness of the material. You may also need to turn on transparent shadows on the background object. (this is a common issue with ray tracing transparent objects). The solution is probably to increase its Depth value If you notice black areas on the surface of a transparent object,

The transparent object that the Depth is set for. Transparent objects outside the Depth range will be rendered pitch black if viewed through Depth Sets the maximum number of transparent surfaces a single ray can travel through. This is used to control the threshold after which the filter color starts to come into play. Limit Materials thicker than this are not transparent. Falloff How fast light is absorbed as it passes through the material. The material will still be transparent but it will start to take on the color of the material.ĭisabled (0.0) by default. The more the base color of the material will show. Filter Amount of filtering for transparent ray trace. See IOR values for Common Materials below. Hence producing a distorted image of its background. Sets how much a ray traveling through the material will be refracted, In addition to the common options given above, the following property controls are available: IOR Index of Refraction. This is all because of the Index of Refraction of glass. You will notice that the background is upside-down and distorted: When you actually look through a plain sphere of glass, It can be deflected from its course according to the Index of Refraction (IOR) Proportional to its Alpha value (and the Alpha value of each transparent Material hit in between).īut while the ray travels through the transparent object, Eventually, the first transparent object inherits the colors of its background, If the object is transparent, then the ray continues its path through it to the next object,Īnd so on, until a non-transparent object is finally encountered which gives the whole chain If the first object hit by the ray is non-transparent, then the ray takes the color of the object. The Raytrace option is only available in the Blender Render and Cycles renderĪ ray is sent from the camera and travels through the scene until it encounters an object.