Awesome
OMM Sample
Opacity Micro-Map sample demostrates usage of Opacity Micro-Maps in Raytracing. Sample details:
- Opacity Micro-Map SDK is used for OMM baking. Both CPU baker and GPU baker are supported in the sample: https://github.com/NVIDIAGameWorks/Opacity-MicroMap-SDK
- Rendering and Denoising are based on NRDSample: https://github.com/NVIDIAGameWorks/NRDSample
Build instructions
- Install Cmake 3.15+
- Install on
- Windows: latest WindowsSDK (22000+), VulkanSDK (1.3.231+)
- Build (variant 1) - using Git and CMake explicitly
- Clone project and init submodules
- Generate and build project using CMake
- Build (variant 2) - by running scripts:
- Run
1-Deploy
- Run
2-Build
- Run
CMake options
USE_MINIMAL_DATA=ON
- download minimal resource package (90MB) - set ShaderBalls.obj scene via cmdargsDISABLE_SHADER_COMPILATION=ON
- disable compilation of shaders (shaders can be built on other platform)DXC_CUSTOM_PATH=custom/path/to/dxc
- custom path to DXC (will be used if VulkanSDK is not found)USE_DXC_FROM_PACKMAN_ON_AARCH64=OFF
- use default path for DXC
How to run
- Run
3-Run OMM sample
script and answer the cmdline questions to set the runtime parameters - The executables can be found in
_Build
. The executable loads resources from_Data
, therefore please run the samples with working directory set to the project root folder (needed pieces of the command line can be found in3-Run OMM sample
script)
Command Line Arguments
- If Smart Command Line Arguments extension for Visual Studio is installed, all command line arguments will be loaded into corresponding window
--api=D3D12
,--api=VULKAN
for graphics API selection--width=x
,--height=y
for setting window size--scene=*path*
for scene selection--help
to print all the available commands
Minimum Requirements
Any RTX GPU:
- RTX 4000 series
- RTX 3000 series
- RTX 2000 series
Usage
OMM:
- Set baker settings in the UI and press Bake OMMs
- For CPU baker it is recommended to use cache
Navigation:
- Right mouse button + W/S/A/D - move camera
- Mouse scroll - accelerate / decelerate
- F1 - toggle "gDebug" (can be useful for debugging and experiments)
- Tab - UI toggle
- Space - animation toggle
Notes:
- Check "Show all settings" in the UI to see rendering setting.
OMM Workflow
- Bake OMM data with Opacity Micro-Map SDK
- Use OMM data to build OMM with corresponding API functions
- Build BLAS using OMM