rikoophorst/dxr-path-tracing

A DXR path tracer with OptiX denoising. 5 months worth of research, trial & error as part of a project to learn and understand DirectX Raytracing & raytracing concepts.

DirectX Raytracing: A Path Tracer

A DXR path tracer with OptiX denoising. 5 months worth of research, trial & error as part of a project to learn and understand DirectX Raytracing & raytracing concepts.

• Progressive Monte Carlo pathtracing
• Native DirectX Raytracing
• DXR Fallback Layer
• OptiX deep-learning denoiser
• Anti-aliasing with various sampling patterns
• Reflection
• Refraction
• Material picking & editing
• ImGui

Performance

Specifications:

• NVIDIA GeForce RTX 2080 Founders Edition (non-overclocked)
• Intel Core i6-6600K at 4.1 GHz
• 8 GB RAM at 2133 MHz
• 256 GB NVMe M.2 Samsung SSD
• All tests ran at 720p (1280 x 720)

Test case: Cornell Box (Release mode)

Bounces	Frame Time
0	~3.6ms
1	~4.0ms
2	~4.3ms
3	~4.9ms
4	~5.6ms
5	~6.3ms
10	~10ms
15	~12.9ms

Test case: Crytek Sponza (Release mode)

Bounces	Frame Time
0	~5.1ms
1	~6.3ms
2	~8.4ms
3	~10.0ms
4	~11.4ms
5	~13.6ms
10	~22.7ms
15	~31.8ms

Building the project

1. Clone the project
2. Download the project's dependencies from here!
3. Run CMake on the project.
4. Configure for Visual Studio 2017 x64.

Prerequisites to compile & run

• Must be on Windows 10 October 2018 update (RS5 | v1809) or newer
• Must have Windows 10 SDK version 10.0.17763.0 or newer (prefer using that exact version!)
• To run native DXR: NVIDIA Turing or Volta GPU or newer.
• To run fallback: Second generation Maxwell GPU or newer.
• Visual Studio 2017 v15.8.6+.

dxr-path-tracing's Issues

not an issue, but some questions

This ... is pretty great. Seriously.

Have you abandoned this, or are you going to continue to work on it?

• Resolutions other than 1280x720 would be great,
• The ability to load a file after launch would be great,
• Does this support loading lights specified in glTF files? (that you load glTF at all is WONDERFUL for me)
• Adding support for other obvious things like environment maps would be great.

Thanks!

Models load with an axis flipped

comparison between Windows 10 "3D Viewer" application and rtrt.exe. One of the axes is flipped.

not executable

It will not run. Running will shut down the program.

compile error on my device

I found some compile errors (C2001 error) on my device,
It caused by the full-width characters [‘’]
like, u8"Argument ‘ " + arg + u8" ’ failed to parse"

these error will be cleared by replacing ’ to '

unable to call cmake macro

cmake.exe -S src -B bin
-- Building for: Visual Studio 15 2017
-- The C compiler identification is MSVC 19.16.27031.1
-- The CXX compiler identification is MSVC 19.16.27031.1
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx86/x86/cl.exe
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx86/x86/cl.exe -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx86/x86/cl.exe
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx86/x86/cl.exe -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Error at rtrt/CMakeLists.txt:3 (add_msvc_precompiled_header):
Unknown CMake command "add_msvc_precompiled_header".

Download the project's dependencies from here!-broken

The url is broken. Thus, CMakeList.txt could not find models, deps, tools. Have you abandoned this project?