SharpGenException when running sample code

Hi! This library looks neat, thanks for making it.

I’m trying to get it running on my GTX 960M laptop, which I’m hoping is not too old of a GPU?

Trying to run the example code from the README:

using ReadWriteBuffer<float> buffer = Gpu.Default.AllocateReadWriteBuffer<float>(1000);
Gpu.Default.For(1000, id => buffer[id.X] = id.X);
float[] array = buffer.GetData();

using .NET Core 3 preview 9 in VS 2019 with the latest package from NuGet, I get the following unhandled exception on the 2nd line:

SharpGen.Runtime.SharpGenException: 'HRESULT: [0x80004005], Module: [General], ApiCode: [E_FAIL/Unspecified error], Message: Unspecified error
'

I tried cloning the repo and running ComputeSharp.Sample and ComputeSharp.ImageProcessing and they both fail with the same exception on NativePipelineState = device.NativeDevice.CreateComputePipelineState(this); in the PipelineState constructor, with the following call stack:

[External Code]
ComputeSharp.Graphics.dll!ComputeSharp.Graphics.Commands.PipelineState.PipelineState(ComputeSharp.Graphics.GraphicsDevice device, Vortice.Direct3D12.ID3D12RootSignature rootSignature, Vortice.Direct3D12.ShaderBytecode computeShader) Line 21	C#	ComputeSharp.Shaders.dll!ComputeSharp.Shaders.ShaderRunner.Run(ComputeSharp.Graphics.GraphicsDevice device, int x, int y, int z, int threadsX, int threadsY, int threadsZ, System.Action<ComputeSharp.ThreadIds> action) Line 95	C#
ComputeSharp.Shaders.dll!ComputeSharp.Shaders.ShaderRunner.Run(ComputeSharp.Graphics.GraphicsDevice device, int x, int y, int z, System.Action<ComputeSharp.ThreadIds> action) Line 37	C#
ComputeSharp.dll!ComputeSharp.GraphicsDeviceExtensions.For(ComputeSharp.Graphics.GraphicsDevice device, int x, System.Action<ComputeSharp.ThreadIds> action) Line 18	C#
ComputeSharp.Sample.dll!ComputeSharp.Sample.Program.Main() Line 30	C#

Any idea what might be happening and how to fix it?

Cheers.

[Sergio0694]

Thank you for your update! I think it’s safe to say that it’s the GTX960M that doesn’t properly support the necessary features then, that’s unfortunate 😟

Still though, I’m not really sure why you’re getting that ugly error instead of the expected NotSupportedException error that ComputeSharp is supposed to throw in this case.

I’ll try to see if I can figure out why this is happening!

[elisee]

@Sergio0694 tried it just now, it looks like it ran properly? didn’t get any exception: