Redshift 2025.3 reworks the handling of Area and Dome light sources in the renderer, making their contribution to the scene less dependent on their visibility to the render camera. Light sources can now be visible in the frame but not cast shadows by themselves, or be invisible in the frame while still visible through transparent materials, as shown in the image above.
The update also enhances multiple scattering in volumes, as a new Extinction Falloff parameter has been added to both the standard and classic Volume shaders. This reduces scattering and transmission coefficients during successive reflections of volume rays, allowing the simulation of "hundreds" of reflections without the usual performance drop. The standard volume now also has a single input for displacement, enabling simultaneous adjustments to the volume across both the volume and emission channels.
Additionally, the Redshift USD procedural is now supported in Maya, as well as in Houdini and Katana, allowing users to load and render USD files using RS Proxy. USD resources are loaded only during rendering, which reduces the size of the main scene file. The USD Procedural program now also supports surface material previews through USB, as well as noise reduction and post-effects.
The update also introduces experimental support for the GeForce RTX 50 series, NVIDIA's new consumer GPUs based on the Blackwell architecture, which are now available for sale. For Mac users, Redshift's Alembic procedural now supports Apple Silicon processors.
Redshift 2025.3 is compatible with Windows 10 and above, glibc 2.28 and above on Linux, and macOS 13.3 and above. The renderer's integration plugins are compatible with 3ds Max 2018, Blender 3.1, Cinema 4D R25, Houdini 18.5, Katana 4.5, and Maya 2018 (Maya 2022 on Linux), and newer versions of the listed software. The software is available on a subscription basis, with the subscription costing $46 per month or $264 per year.