Download the latest version:
AMD FidelityFX™ Contrast Adaptive Sharpening (CAS) provides a mixed ability to sharpen and optionally scale an image.
Supports:
- DirectX®12.
- Vulkan®.
Part of the AMD FidelityFX™ SDK
Download the latest version as part of FidelityFX SDK v1.1
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)
Xbox developer?
An example use of AMD FidelityFX Contrast Adaptive Sharpening exists within the Xbox Game Development Kit samples.
Features
Razor sharp visuals
Highly optimized
Open source, MIT license
Details
AMD FidelityFX Contrast Adaptive Sharpening (CAS) provides a mixed ability to sharpen and optionally scale an image. The algorithm adjusts the amount of sharpening per pixel to target an even level of sharpness across the image. Areas of the input image that are already sharp are sharpened less, while areas that lack detail are sharpened more. This allows for higher overall natural visual sharpness with fewer artifacts.
CAS was designed to help increase the quality of existing Temporal Anti-Aliasing (TAA) solutions. TAA often introduces a variable amount of blur due to temporal feedback. The adaptive sharpening provided by CAS is ideal to restore detail in images produced after TAA .
CAS’ optional scaling capability is designed to support Dynamic Resolution Scaling (DRS). DRS changes render resolution every frame, which requires scaling prior to compositing the fixed-resolution User Interface (UI). CAS supports both up-sampling and down-sampling in the same single pass that applies sharpening.
Comparisons off/on
See AMD FidelityFX CAS in action with Godfall
You'll also find AMD FidelityFX CAS in The Riftbreaker
Developers using AMD FidelityFX
AMD FidelityFX CLI
Want to quickly try out AMD FidelityFX Super Resolution (FSR) or AMD FidelityFX Contrast Adaptive Sharpening (CAS)?
You can use our new command-line tool AMD FidelityFX CLI, which lets you test FSR or CAS on a screenshot, or any other image.
Unreal Engine developer?
We have many powerful patches for Unreal Engine for registered Unreal Engine developers, covering performance and features.
AMD FidelityFX Contrast Adaptive Sharpening is available as a feature patch you can apply for Unreal Engine.
Useful information
Find out what developers are saying about AMD FidelityFX.
Version history
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.
- Introduces the option to expose up-sampling options.
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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