Default light refers to the directional rays of a light that acts like a lamp shining over your left shoulder. When you do not add any light sources to your scene, Rhino uses the default light. In the Properties panel, click on the Material tab to modify these attributes. Until you add render color, highlight, texture, transparency, and bumps, objects will appear white. Rhino offers full-color rendering with lights, transparency, shadows, textures, and bump mapping.

Here is a step-by-step guide about how to render in Rhino 3D. You will use the Render command since you are ready to render. Open Computing Language (OpenCL) is a framework for writing programs that execute across heterogeneous platforms consisting of central processing units (CPUs), graphics processing units (GPUs), digital signal processors (DSPs), field-programmable gate arrays (FPGAs) and other processors or hardware accelerators.You have completed your design, but are you looking for step-by-step instructions on how to set up the rendering in Rhino 3D? In order to start rendering, you need to check your design for four features: Lights, Material, Environment, and Ground Plane. These include all devices that support the OpenCL technology, including CPUs and most graphics cards. This tab shows all of the render devices in the OpenCL category. This tab shows all of the devices that support NVIDIA OptiX™ Ray Tracing Engine. CUDA is a parallel computing platform and application programming interface (API) model created by NVidia. These are the NVidia graphics and compute cards. This tab shows all of the render devices in the Compute Unified Device Architecture (CUDA) category. Search for RhinoCycles.Threads in Advanced settings to configure how many CPU cores are used for the Raytraced viewport and Rhino Render. This tab shows all of the devices in the central processing unit (CPU) of your computer. This means this default device differs according to the computer's hardware configuration. The default device selection picks the first available CUDA device is installed otherwise, CPU is selected. A render session is the rendering progress in a Raytraced (Cycles) viewport.

The device selection grid is for selecting the device to render new render sessions with. This can be used to lessen the stress on the GPU, especially useful when rendering on GPU where the GPU is also the display driver, meaning a monitor is attached to that card, and the operating system is using that to show everything on it. The time in milliseconds to wait between each sample pass (one pass over the entire image, sampling each pixel once).

The Rhino Render options manage the device used for the Raytraced display mode and Rhino Render.

Rhino render view settings