AMD FSR SDK
AMD FSR™ SDK v2.1 is the launchpad for our ML-based FSR "Redstone" rendering technologies, inc. AMD FSR Upscaling, Frame Generation, Ray Regeneration, and Radiance Caching.
ML-powered real-time denoising
ML-powered real-time denoising
AMD FSR™ Ray Regeneration is a standalone, machine learning-powered real-time denoiser that integrates seamlessly with any game engine, enabling high-quality visuals by denoising inputs from ray-traced workloads.
Requiring AMD RDNA™ 4 architecture graphics, it works best when combined with other AMD FSR “Redstone” technologies to transforming noisy outputs from ray tracing into a clean, coherent image.
AMD FSR Ray Regeneration delivers:
Supports:
AMD FSR Ray Regeneration “Redstone” (1.0.0) initial release (as part of the AMD FSR SDK 2.1 release):
Since the advent of hardware-accelerated ray tracing, real-time game and rendering engines have increasingly adopted ray tracing techniques. From more realistic reflections to finely detailed shadows, ray tracing has significantly elevated visual fidelity in modern games.
However, ray tracing alone is not enough. The raw outputs from these techniques are inherently noisy, making effective denoising essential for producing clean, high-quality images. Denoising is the process of transforming noisy outputs from ray tracing into a clean, coherent image, typically leveraging information from both spatial and temporal domains.
AMD FSR™ Ray Regeneration performs this task with a key advantage: it uses machine learning (ML) to dynamically determine optimal filter weights, providing superior results compared to purely analytical methods.
AMD FSR Ray Regeneration example
FSR Ray Regeneration performs denoising independently of upscaling, making it a decoupled denoiser. In contrast, denoising and upscaling can also be combined into a single, joint operation. Both approaches are valid, but decoupling denoising into its own dispatch call simplifies adding additional rendered content afterward.
To maximize compatibility and efficiency when denoising your game’s specific workloads, FSR Ray Regeneration provides multiple input/output configurations:
| Configuration | Inputs |
|---|---|
| FSR Ray Regeneration mode: 4 signals | Direct specular, direct diffuse, indirect specular, indirect diffuse |
| FSR Ray Regeneration mode: 2 signals | Fused specular and diffuse |
| FSR Ray Regeneration mode: 1 signal | Fused specular and diffuse into one signal |
AMD FSR Ray Regeneration is designed to work seamlessly with AMD FSR Upscaling and AMD FSR Frame Generation. Additionally, the temporal anti-aliasing provided by FSR Upscaling adds an extra layer of smoothing when used alongside FSR Ray Regeneration.
AMD FSR Ray Regeneration performance may vary depending on your target hardware and configuration.
| Target Render Resolution | Milliseconds (ms) |
|---|---|
| 960x540 | 1.7 |
| 1920x1080 | 4.0 |
| 2560x1440 | 7.9 |
| Target Render Resolution | Milliseconds (ms) |
|---|---|
| 960x540 | 1.3 |
| 1920x1080 | 3.2 |
| 2560x1440 | 6.4 |
| Target Render Resolution | Milliseconds (ms) |
|---|---|
| 960x540 | 1.1 |
| 1920x1080 | 2.3 |
| 2560x1440 | 4.9 |
Performance figures are accurate at the time of writing for an AMD Radeon™ RX 9070 XT GPU and are subject to change.
Supported GPUs
Supported graphics APIs
Supported OS
Call of Duty®: Black Ops 7 ©/TM/® 2025 Activision Publishing, Inc.
DirectX and Windows are trademarks of the Microsoft group of companies.
Initial release of AMD FSR™ Ray Regeneration as part of the AMD FSR SDK 2.1:
Machine learning-powered real-time denoising for high-quality ray tracing on Windows® 11.
Designed for AMD RDNA™ 4 architecture GPUs (AMD Radeon™ RX 9000 Series).
Decoupled denoising independent of upscaling, pair with FSR Upscaling for optimal visual results.