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Engine – Switches between the CPU, CUDA(GPU), and RTX(GPU) rendering engine.

The devices used by the GPU engine to perform the raytracing calculations, can be specified via the menu available on the right .

The Computer CPU is also listed as "C++/CPU" in the CUDA device list and can participate in rendering (Hybrid rendering). For more information, see the Hybrid Rendering with CPUs and the CUDA Engine section below.

For more information on GPU rendering engines, see the GPU Rendering page.

Progressive – Enables the Progressive image sampling mode. With this mode active, a noisy image appears in the VFB at first and its quality improves over time.

Quality – Controls the rendered image quality by changing the Raytrace and Global Illumination settings. If any of the controlled settings is manually modified and no longer corresponds to the current quality preset value, the Custom quality is automatically selected.

Update Effects – Controls the regularity of post effects updates during progressive rendering - Denoiser, Lens Effects, Lighting Analysis. The steps go as follows:

At the End (0% of maximum frequency) disables progressive updates. Instead, effects are applied after the render process is finished (but not if it is manually cancelled).
Rapid (100% of maximum frequency) causes updates as often as possible.
Rarely, Often and Very Often are medium steps increasing the updates.

Denoiser – Enables the Denoiser Render Element. Additional render elements are created automatically and appear in the VFB channel stack. hen enabled, you can switch between NVIDIA AI denoiser or the V-RAY denoiser. For more information, see the Denoiser page.

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