This group of switches allows you to disable a number of important rendering features. By selectively disabling some features, you can get a feel for where the renderer is spending most of the time, which helps optimizing scenes. Lighting or look-dev could be sped up by enabling ignore_textures or ignore_shaders for example. This is also useful for isolating errors and artifacts when debugging. Note that not all of these options are interactive - some of them may require the entire scene to be refreshed/exported.
Ignore all textures when rendering. Ignore all shaders when rendering, Arnold will render with a simple n_dot_eye shader instead. Ignore atmospheric shaders. Ignore all light sources. Don't perform shadow calculations. No objects will be subdivided. This parameter is not interactive. Displacements will be ignored. This parameter is not interactive. Ignore bump mapping. Polygon normals will not be smoothed, resulting in a faceted appearance. This parameter is not interactive. Ignores all motion keys. When disabling motion blur with ignore_motion_blur, the time specified by reference_time will be used instead of the shutter open time. This time is mapped on [0,1] with 0 being shutter open and 1 the shutter closed. Ignore depth of field computation. Ignore subsurface scattering. Ignore operators. Nodes in this list are ignored. For example, the following would skip creation of Lambert, Standard Surface and curves shaders: Global shader override which allows you to override the shader for all objects in the scene. Ignore imagers. Allow users to disable imager post-processing in a scene. This can be useful for debugging and can also be enabled via kick with the Ignore Textures
Ignore Shaders
Ignore Atmosphere
Ignore Lights
Ignore Shadows
Ignore Subdivision
Ignore Displacement
Ignore Bump
Ignore Normal Smoothing
Ignore Motion
Ignore Depth of Field
Ignore Sub-Surface Scattering
Ignore Operators
Ignore List
ignore_list 3 1 STRING lambert standard_surface curves
Shader Override
Ignore Imagers
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Pepe model by Daniel M. Lara (Pepeland)