The Random Color texture generates a random float value that creates color variations on geometry instances connected to a single material. Figure 1 shows a number of instances of the OctaneRender® logo geometry. A single Diffuse material applies to all of the instances. Each instance has a random shade because the Random Color texture node connects to the material's Diffuse channel.


Figure 2 shows a graph of the network. OctaneRender® creates these instances by connecting the Geometry node to multiple Placement nodes. The Random Color texture is useful when importing baked particle simulations that contain thousands of instances. OctaneRender® can apply a aterial to the instances, and the Random Color texture can connect to different Material channels to create variations in the instance shading. The Random Color texture has a single parameter - Random Seed. Changing this value shifts the random output of the texture.


Random COlor Texture


Figure 1: Several instances of the same geometry have random shading after connecting a Random Color texture to the instance's Material


nodegraph layout


Figure 2: A Nodegraph of the geometry instances network