This sample shows a way to combine traditional rasterized shadows with raytracing to create fast high quality shadows.
Supports:
- DirectX®12
- Vulkan®
Part of the AMD FidelityFX™ SDK
Download the latest version v1.0:
This release adds the following features:
- Just released!
Download the latest version as part of FidelityFX SDK v1.1
AMD FidelityFX Hybrid Shadows:
- Fixed memory leak issue.
- General cleanup of the shadow classifier.
- Fix Hybrid Shadows issues on RX 7900 XTX.
Updated as part of AMD FidelityFX SDK v1.1:
- AMD FidelityFX backend updates, including buffer allocator overrides
- Updated documentation and release of reference documentation for SDK + Framework
- Native Microsoft® GDK® backend implementation library (requires developer access to GDK® program)
Features
This sample showcases the following Hybrid Shadows functionality:
- Configurable shadow cascades.
- Ray traced shadows.
- Hybrid shadows.
- Rejecting lit pixels.
- Rejecting shadowed pixels.
- Ray interval reduction.
- AMD FidelityFX Shadow Denoiser.
AMD FidelityFX™ Denoiser
AMD FidelityFX Denoiser is a set of denoising compute shaders which remove artefacts from reflection and shadow rendering.
Image comparison
Debug view
The left side shows an overlay where the tiles that have any ray tracing in them are written out with pure red and green.
 | A pixel (part of a tile) that needs ray tracing, but will not fire a ray. |
 | A pixel that will fire a ray. |
The right side shows the shadow map.
Requirements
- A graphics card with Direct3D® 12 and DXR 1.1 support.
- Windows® 10 (64-bit recommended).
- Visual Studio® 2019 with Visual C++® and the Windows® 10 SDK installed.
Related to Hybrid Shadows
AMD FidelityFX™ Cauldron Framework
AMD FidelityFX Cauldron Framework is our open-source experimentation framework for DirectX®12 and Vulkan®, provided in the AMD FidelityFX SDK.
AMD FidelityFX™ Denoiser
AMD FidelityFX Denoiser is a set of denoising compute shaders which remove artefacts from reflection and shadow rendering.
Microsoft® Game Stack Live: Denoising Raytraced Soft Shadows on Xbox Series X|S and Windows with FidelityFX
We explain how FidelityFX Denoiser allows for high-quality raytracing results without increasing rays per pixel, and deep dive into specific AMD RDNA™ 2-based optimizations that benefit both Xbox Series X|S and PC.
AMD FidelityFX™ Hybrid Stochastic Reflections sample
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Version history
AMD FidelityFX Hybrid Shadows:
- Fixed memory leak issue.
- General cleanup of the shadow classifier.
- Fix Hybrid Shadows issues on RX 7900 XTX.
Updated as part of AMD FidelityFX SDK v1.1:
- AMD FidelityFX backend updates, including buffer allocator overrides
- Updated documentation and release of reference documentation for SDK + Framework
- Native Microsoft® GDK® backend implementation library (requires developer access to GDK® program)
- Now part of AMD FidelityFX SDK.
- Various bug fixes applied based on past integrations.
All part of the FidelityFX SDK!
AMD FidelityFX™ SDK
The AMD FidelityFX SDK is our easy-to-integrate solution for developers looking to include FidelityFX features into their games.
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