Rune Skovbo Johansen runevision
kraj0t
/ UsingCsCodeInHLSL.cs
Last active
April 27, 2026 10:05
How to include C# code in an HLSL file - useful for sharing code between CPU and shader without duplicating any files
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| // Share code between HLSL (shaders) and C# | |
| // | |
| // Limitations: | |
| // - Cannot use #include | |
| // - Must use defines to hide certain keywords, such as public, private, protected, or any other object-oriented programming keywords | |
| // - Use defines to convert half or fixed to your desired C# equivalent | |
| // - Must always write f after float literals | |
| // - Use #if !MY_DEFINE instead of #ifndef MY_DEFINE | |
| // - #define cannot be used with a value in C#, not even inside an '#if SHADER_TARGET' block. Therefore, you have two options for declaring valued constants: | |
| // a. Declare each constant separately in HLSL (using 'static const float MyConstant = 1.0f') and in C# (using 'const float MyConstant = 1.0f'). C# does not support 'static const'. |