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Using Sponza in the RTXGI Test Harness

To get the Sponza rendering with RTXGI in the Test Harness, follow these steps:

  1. Clone https://github.com/KhronosGroup/glTF-Sample-Models to somewhere on your machine (but don't clone it inside of this project).

  2. Copy or move the contents of https://github.com/KhronosGroup/glTF-Sample-Models/tree/master/2.0/Sponza/glTF into this directory.

  3. Change the Test Harness project's launch arguments to use the Sponza configuration file (samples/test-harness/config/sponza.ini)

    • If using Visual Studio, modify the Test Harness project's Command Arguments:

      Project->Properties->Debugging->CommandArguments: ../../../samples/test-harness/config/sponza.ini

    • If using Visual Studio Code, modify the samples/test-harness/launch.json file's args field:

      "args": [ "../../test-harness/config/sponza.ini" ]

  4. Run the Test Harness.

Important Note

On the first run (only), the test harness loads all scene textures, compresses them to BC7 format, generates mipmaps, and writes all scene data to a binary cache file (Sponza.cache in this case).

The texture processing steps use the DirectXTex library. If on Windows, the library performs compression with the GPU and D3D11. On Linux, compression is performed entirely on the CPU and is quite slow as a result. It is recommended to generate scene cache files on Windows if possible.