Redshift 3D

Redshift is a biased renderer.  Redshift uses approximation and interpolation techniques to achieve noise-free results with relatively few samples, making it much faster than unbiased rendering.

Redshift uses an out-of-core architecture for geometry and textures, allowing you to render massive scenes that would otherwise never fit in video memory.

Redshift supports geometry instancing allowing you to render massive scenes with large numbers of repeating objects, like grass or trees, efficiently with almost no memory overhead.

Redshift provides a progressive rendering mode that allows you to conveniently and interactively preview your scene without waiting for GI prepasses.  This mode uses progressive refinement to give you draft quality results almost immediately while continuously refining the quality over time.

Redshift uses a flexible node-based shader system supporting complex shading networks.  With support for surface, photon, environment, light and lens shaders, as well as a variety of BRDF lighting models, Redshift gives you the power and flexibility to achieve photorealistic results or highly stylized effects.

Redshift includes several optimizations that help you achieve noise-free results without sacrificing performance by automatically adjusting the number of samples used throughout the renderer based on a variety of heuristics.