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Hybrid Stochastic Reflections (HSR) Sample is an open source, high-quality solution for producing physically based hybrid reflections combining screen space traversal with hardware ray tracing.

It uses a per pixel feedback pipeline to predict the majority ray class per 8x8 tiles in screen space. This allows to avoid hybridization cost.

You can find the binaries for HSR in the release section on GitHub.

• Hybrid reflections
  • Using FidelityFX SSSR reflections to replace raytracing intersection tests
  • Reshading re-projected pixels for accurate material evaluation
  • Supports lower resolution reflections using FSR 1.0 upscaling
  • Using per-pixel feedback to reduce hybridization cost
• Raytraced reflections

• A graphics card with Direct3D® 12 and DXR support.
• Windows® 10 (64-bit recommended).
• Visual Studio® 2019 with Visual C++® and the Windows® 10 SDK installed.

To build the HSR Sample, please follow the following instructions:

1. Install the following tools:

   • CMake 3.16
   • Visual Studio 2019
   • Windows 10 SDK 10.0.18362.0

2. Clone repository

3. Generate the solutions:

   > cd <installation path>\build
   > GenerateSolutions.bat
   

4. Open the solutions in the DX12 directory (depending on your preference), compile and run.