public IntPtr CreateBuffer(uint size, CLEnum flags)
{
var result = Bindings.OpenCl.CreateBuffer(
Handle,
flags,
(UIntPtr)size,
Span <byte> .Empty,
Span <int> .Empty
);
if (result == IntPtr.Zero)
{
throw new Exception("Failed to allocate device memory!");
}
var error = (CLEnum)Bindings.OpenCl.RetainMemObject(result);
if (error != CLEnum.Success)
{
throw new Exception("Failed to retain device memory!");
}
OpenBuffers.Add(result);
return(result);
}
private byte[] QueryInfo(CLEnum type)
{
var result = new byte[1024];
var size = new UIntPtr[1];
var error = (CLEnum)Bindings.OpenCl.GetDeviceInfo(
Handle,
(uint)type,
(UIntPtr)result.Length,
new Span <byte>(result),
new Span <UIntPtr>(size)
);
if (error != CLEnum.Success)
{
throw new Exception($"Failed to get device info \"{type}\"!");
}
Array.Resize(ref result, (int)size[default]);
public uint QueryCommandQueue(CLEnum flag)
{
var bytes = new byte[1024];
var size = new UIntPtr[1];
var error = (CLEnum)Bindings.OpenCl.GetCommandQueueInfo(
Queue,
(uint)flag,
(UIntPtr)bytes.Length,
new Span <byte>(bytes),
new Span <UIntPtr>(size)
);
if (error != CLEnum.Success)
{
throw new Exception("Failed to query command queue!");
}
Array.Resize(ref bytes, (int)size[0]);
return(BitConverter.ToUInt32(bytes));
}
public unsafe IntPtr MapBuffer(IntPtr buffer, uint size, CLEnum flags)
{
var result = Bindings.OpenCl.EnqueueMapBuffer(Queue,
buffer,
true,
flags,
(UIntPtr)0,
(UIntPtr)size,
0,
Span <IntPtr> .Empty,
Span <IntPtr> .Empty,
Span <int> .Empty
);
var ptr = new IntPtr(result);
if (ptr == IntPtr.Zero)
{
throw new Exception($"Failed to map device memory!");
}
return(ptr);
}
