Custom DxcIncludeHandler

[tomdrin88]

Hello,
I would like to implement my own include handler - basically prepending the path with custom folder. I have written simple implementation - see the code below.
It seems to produce correct blob if I call it outside the compiler scope. But unfortunatelly once I use it in DxcCompiler.Compile I get file not found error - it seems like it is ignored completelly.

Is there some tricky part I'm missing?
Is somewhere example of custom IncludeHandler?

    private static readonly IDxcUtils UTILS = Dxc.CreateDxcUtils();

    private class IncludeHandler : SharpGen.Runtime.ComObject, IDxcIncludeHandler
    {
        public Result LoadSource(string filenameRef, out IDxcBlob includeSourceOut)
        {
            includeSourceOut = null;
            
            var path = Path.Combine(ShadersBasePath, filenameRef);
            
            if (!File.Exists(path))
                return Result.Fail;
            
            includeSourceOut = UTILS.LoadFile(path, null);
            return Result.Ok;
        }
    }

Thanks a lot for the answer in advance
Tomas Drinovsky

[amerkoleci]

Hi, nothing tricky.

Just grab code from here:
https://github.com/amerkoleci/Vortice.Windows/blob/main/src/samples/HelloDirect3D12/ShaderIncludeHandler.cs

[tomdrin88]

Thanks a lot :)