/// <summary>
/// Create a OpenCLManager, configure it, and then create a context using all devices in platform 0,
/// Once the context is up and running we compile our source file "OpenCLFunctions.cl"
/// The Helper automatically compiles and creates kernels.
/// We can then extract named kernels using the GetKernel method.
///
/// For more advanced scenarios, one might use the functions in the Platform class
/// to query devices, create contexts etc. Platforms can be enumerated using
/// for( int i=0; i<OpenCL.NumberofPlatforms; i++ )
/// Platform p = OpenCL.GetPlatform(i);
/// </summary>
private void InitializeOpenCL()
{
if (OpenCL.NumberOfPlatforms == 0)
{
MessageBox.Show("OpenCL not available");
Application.Exit();
}
OCLMan = new OpenCLManager();
// Attempt to save binaries after compilation, as well as load precompiled binaries
// to avoid compilation. Usually you'll want this to be true.
OCLMan.AttemptUseBinaries = true;
// Attempt to compile sources. This should probably be true for almost all projects.
// Setting it to false means that when you attempt to compile "mysource.cl", it will
// only scan the precompiled binary directory for a binary corresponding to a source
// with that name. There's a further restriction that the compiled binary also has to
// use the same Defines and BuildOptions
OCLMan.AttemptUseSource = true;
// Binary and source paths
// This is where we store our sources and where compiled binaries are placed
OCLMan.BinaryPath = @"OpenCL\bin";
OCLMan.SourcePath = @"OpenCL\src";
// If true, RequireImageSupport will filter out any devices without image support
// In this project we don't need image support though, so we set it to false
OCLMan.RequireImageSupport = false;
// The Defines string gets prepended to any and all sources that are compiled
// and serve as a convenient way to pass configuration information to the compilation process
OCLMan.Defines = "#define MyCompany_MyProject_Define 1";
// The BuildOptions string is passed directly to clBuild and can be used to do debug builds etc
OCLMan.BuildOptions = "";
OCLMan.CreateDefaultContext(0, DeviceType.ALL);
OCLProgram = OCLMan.CompileFile("OpenCLFunctions.cl");
for (int i = 0; i < OCLMan.Context.Devices.Length; i++)
{
comboBoxDeviceSelector.Items.Add(OCLMan.Context.Devices[i].Vendor + ":" + OCLMan.Context.Devices[i].Name);
}
comboBoxDeviceSelector.SelectedIndex = 0;
CrossFadeKernel = OCLProgram.CreateKernel("CrossFade");
}
public void BuildOCLSource(string source)
{
oclProgram = oclContext.CreateProgramWithSource(source);
oclProgram.Build();
FilterKernel = oclProgram.CreateKernel("FilterImage");
}
