diff --git a/Assets/raytrace/build.md b/Assets/raytrace/build.md
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+Build:
+`node Kinc/make -g direct3d12 --raytrace dxr`
+
+Compile shader:
+`.\dxc.exe -Zpr -Fo ..\..\Bundled\raytrace\raytrace.cso -T lib_6_3 .\raytrace.hlsl`
diff --git a/Assets/raytrace/dxc.exe b/Assets/raytrace/dxc.exe
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diff --git a/Assets/raytrace/dxcompiler.dll b/Assets/raytrace/dxcompiler.dll
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diff --git a/Assets/raytrace/dxil.dll b/Assets/raytrace/dxil.dll
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diff --git a/Assets/raytrace/license.md b/Assets/raytrace/license.md
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+Based on: https://github.com/microsoft/DirectX-Graphics-Samples/tree/master/Samples/Desktop/D3D12Raytracing
+
+Copyright (c) Microsoft. All rights reserved.
+This code is licensed under the MIT License (MIT).
+THIS CODE IS PROVIDED *AS IS* WITHOUT WARRANTY OF
+ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING ANY
+IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR
+PURPOSE, MERCHANTABILITY, OR NON-INFRINGEMENT.