Falcor 4.0

Falcor is a real-time rendering framework supporting DirectX 12. It aims to improve productivity of research and prototype projects.

Features include:

Abstracting many common graphics operations, such as shader compilation, model loading, and scene rendering
DirectX Raytracing abstraction
Render Graph system
Python scripting
Common rendering effects such as shadows and post-processing effects
Unbiased path tracer

The included path tracer requires NVAPI. Please make sure you have it set up properly, otherwise the path tracer won't work. You can find the instructions below.

Prerequisites

Windows 10 version 1809 or newer
Visual Studio 2019
Microsoft Windows SDK version 1903 (10.0.18362.1)

Optional:

A GPU which supports DirectX Raytracing, such as the NVIDIA Titan V or GeForce RTX (make sure you have the latest driver)
Windows 10 Graphics Tools. To run DirectX 12 applications with the debug layer enabled, you must install this. There are two ways to install it:
- Click the Windows button and type Optional Features, in the window that opens click Add a feature and select Graphics Tools.
- Download an offline package from here. Choose a ZIP file that matches the OS version you are using (not the SDK version used for building Falcor). The ZIP includes a document which explains how to install the graphics tools.
NVAPI (see below)

NVAPI installation

After cloning the repository, head over to https://developer.nvidia.com/nvapi and download the latest version of NVAPI (this build is tested against version R435). Extract the content of the zip file into Source/Externals/.packman/ and rename R435-developer to NVAPI.

Finally, set _ENABLE_NVAPI to true in Source/Falcor/Core/FalcorConfig.h

CUDA Support

Refer to the README located in the Source/Samples/CudaInterop/ for instructions on how to set up your environment to use CUDA with Falcor.

Falcor Configuration

FalcorConfig.h contains some flags which control Falcor's behavior.

_LOG_ENABLED - Enable/disable log messages. By default, it is set to true.
_PROFILING_ENABLED - Enable/Disable the internal CPU/GPU profiler. By default, it is set to true.

Resources

Falcor: Falcor's GitHub page.
Documentation: Additional information and tutorials.
- Getting Started
- Render Graph Tutorials
ORCA: A collection of high quality scenes and assets optimized for Falcor.
Slang: Falcor's shading language and compiler.

Citation

If you use Falcor in a research project leading to a publication, please cite the project. The BibTex entry is

@Misc{Benty20,
   author =      {Nir Benty and Kai-Hwa Yao and Petrik Clarberg and Lucy Chen and Simon Kallweit and Tim Foley and Matthew Oakes and Conor Lavelle and Chris Wyman},
   title =       {The {Falcor} Rendering Framework},
   year =        {2020},
   month =       {03},
   url =         {https://github.com/NVIDIAGameWorks/Falcor},
   note=         {\url{https://github.com/NVIDIAGameWorks/Falcor}}
}