Hy
So I am fairly new to OpenCL and GPGPU in general , all has been great until I wanted to integrate it with one of my C# applications issue being that if I call the functioning from C# OpenCL does not find any valid devices but if I switch from .dll to .exe and execute it as a console application it works just fine
C++ code sample
#if _MSC_VER
#define EXPORT_API __declspec(dllexport) functions with this
#else
#define EXPORT_API
#endif
.........
extern "C"
{
int EXPORT_API CLGetDeviceCount()
{
cl::Platform::get( &platforms);
cl_context_properties cps[3] = { CL_CONTEXT_PLATFORM, (cl_context_properties)(platforms[i])(), 0 };
context = cl::Context (CL_DEVICE_TYPE_ALL , cps);
devices = context.getInfo<CL_CONTEXT_DEVICES>();
return devices.size() ;
}
}
C# code sample
using System.Runtime.InteropServices;
......
public class SimpleCLCall
{
[DllImport("CLTest")]
private static extern int CLGetDeviceCount();
public int clDeviceCount()
{
return CLGetDeviceCount();
}
}