![AMD FidelityFX Variable Shading](png/20666024-c_amd_fidelityfx_variable_shading_lockup_rgb_wht.png)
AMD FidelityFX™ Variable Shading (VS) provides an open source header implementation to easily integrate Variable Rate Shading into your game. The effect works by analyzing luminance variance in the previous frame and uses motion vectors to generate a shading rate image.
Supports:
- DirectX®12 Ultimate.
- Vulkan®.
Download the latest version - v1.0
Download the latest version - v1.1
This release includes:
- Now part of AMD FidelityFX SDK.
- Various fixes.
Part of the AMD FidelityFX™ SDK
![AMD FidelityFX SDK components](https://gpuopen.com/wp-content/uploads/2023/06/FFX_SDK_banner-1024x570.png)
Xbox developer?
An example use of AMD FidelityFX Variable Shading exists within the Xbox Game Development Kit samples.
![xbox](https://gpuopen.com/wp-content/uploads/2021/07/xbox-800px.png)
Features
State-of-the-art algorithm
Optimized for Shader Model 6.0+
Open source, MIT license
Details
Features of the implementation:
- AMD RDNA™ 2-optimized algorithm.
- Support for Direct3D®12 API.
- Shaders written in HLSL utilizing SM 6.0 wave-level operations.
A sample application is provided for Direct3D®12.
Comparison
![](jpg/fullsize_ffx_vrs.jpg)
![](https://gpuopen.com/wp-content/uploads/2023/06/fullsize_FFX_VRS_Tiles.jpg)
![]() |
Full Shading Rate | ![]() |
2×1 or 1×2 Shading Rate | ![]() |
2×2 Shading Rate |
Additional resources
Version history
- Initial release
All part of the FidelityFX SDK!
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