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Redshift Real Time is currently in beta and only in Windows with an Nvidia RTX GPU.
Due to the current limitations of Redshift Real Time, it is recommended that RS RT be used with new scenes as you are likely to find incompatibility with many shader networks found in pre-existing scenes.
macOS is not currently supported.
Redshift RT Render Settings
Page Table Of Contents
|Redshift Real Time
Render Time: 4s
|Redshift Production Bucket
|Redshift Real Time
Render Passes: 128
|Redshift Production Interactive
Redshift Real Time (RT) is the fastest interactive rendering engine available in Redshift, offering near real time updates. The speed and interactivity of Redshift RT makes it an excellent option for look development, scene layout, and light placement. Additionally, Redshift RT is designed to match Redshift's Production rendering engine as closely as possible, making it ideal for quickly switching back and forth between the two to make the most of each engine's strengths.
Redshift RT supports Render View undersampling to increase interactivity and an experimental version of per-pixel displacement. The latter can be used in the same manner as setting up displacement for Redshift Production, however, it does not require the underlying mesh to be sufficiently dense for detailed displacement results. In the example below, the sphere only has 72 faces and the ground plane only has 100 and yet displacement is extremely detailed.
|Wireframe overlay without displacement
|Displacement without tessellation
|Textures from Polyhaven.com
Redshift RT can be enabled directly from the Redshift Render View or from the render settings menu as pictured in the images below.
The option to switch the rendering engine from Production to Real Time in the render settings can be found at the top of the Basic Settings section or in the Sampling tab of the Advanced Settings.
|Switching to Redshift RT from the Render View by clicking on the 'RT' icon
|Switching to Redshift RT from the Render Settings
|Switching to Redshift RT from a Viewport's 'Redshift' menu
Redshift RT has its own render settings section. Please see the Render Settings - RT - Basic page and the Render Settings - RT - Advanced pages for more information.
When using Redshift RT the primary setting that affects render quality is the number of Progressive Passes and the global Trace Depth limits. Redshift RT has a maximum trace depth limit of 4.
|Progressive Passes: 1
Normal Maps are flipped