public void TestBufferReadWriteRaw()
{
checkSetup();
CommandQueue queue = CommandQueue.Create(context, device, CommandQueueFlags.ProfilingEnable);
Buffer buffer = Buffer.Create(context, MemFlags.ReadWrite, (IntPtr)16);
Float4 vec = new Float4();
vec.X = 1.0f; vec.Y = 2.0f; vec.Z = 3.0f; vec.W = 4.0f;
IntPtr vecBuff = Marshal.AllocHGlobal(16);
try{
Marshal.StructureToPtr(vec, vecBuff, false);
unsafe {
Event writeEvent;
buffer.EnqueueWriteRaw(queue, (IntPtr)0, (IntPtr)16, vecBuff, out writeEvent);
writeEvent.Wait();
float v0, v1, v2, v3;
buffer.ReadRaw(queue, (IntPtr)0, (IntPtr)4, (IntPtr)(&v0));
buffer.ReadRaw(queue, (IntPtr)4, (IntPtr)4, (IntPtr)(&v1));
buffer.ReadRaw(queue, (IntPtr)8, (IntPtr)4, (IntPtr)(&v2));
buffer.ReadRaw(queue, (IntPtr)12, (IntPtr)4, (IntPtr)(&v3));
Assert.AreEqual(1.0f, v0);
Assert.AreEqual(2.0f, v1);
Assert.AreEqual(3.0f, v2);
Assert.AreEqual(4.0f, v3);
float k = 9.0f;
buffer.WriteRaw(queue, (IntPtr)4, (IntPtr)4, (IntPtr)(&k));
buffer.ReadRaw(queue, (IntPtr)4, (IntPtr)4, (IntPtr)(&v1));
Assert.AreEqual(9.0f, v1);
}
}
finally{
Marshal.FreeHGlobal(vecBuff);
buffer.Dispose();
queue.Dispose();
}
}
public void Write <T>(CommandQueue queue, T[] values) where T : struct
{
if (values == null)
{
throw new ArgumentException("values array is null", "values");
}
int elemSize = Marshal.SizeOf(typeof(T));
IntPtr arrSize = (IntPtr)(values.Length * elemSize);
if ((ulong)arrSize > (ulong)this.Size)
{
throw new OpenCLBufferSizeException("Buffer is too small for array.");
}
IntPtr buf = this.Map(queue, MapFlags.Write, (IntPtr)0, arrSize);
try{
copyArrayToPtr(values, buf);
}
finally{
this.Unmap(queue, ref buf);
}
}
public IntPtr EnqueueMap(CommandQueue queue, MapFlags flags, Offset2D origin, Dim2D region, out IntPtr pitch, Event[] waitList, out Event evt)
{
Offset3D origin_buf = new Offset3D(origin.X, origin.Y, (IntPtr)0);
Dim3D region_buf = new Dim3D(region.X, region.Y, (IntPtr)1);
IntPtr tempPitch = IntPtr.Zero;
uint waitCount = (waitList == null ? 0 : (uint)waitList.Length);
IntPtr[] wlh = CLObject.GetHandles(waitList);
IntPtr evtHandle = IntPtr.Zero;
ErrorCode errorCode;
IntPtr result = IntPtr.Zero;
unsafe {
result = Native.EnqueueMapImage(queue.Handle, this.Handle, true, flags, &origin_buf, ®ion_buf, &tempPitch, null, waitCount, wlh, &evtHandle, &errorCode);
}
if (errorCode != ErrorCode.Success)
{
throw new OpenCLCallFailedException(errorCode);
}
pitch = tempPitch;
evt = new Event(evtHandle);
return(result);
}
public void TestBufferMap()
{
checkSetup();
CommandQueue queue = CommandQueue.Create(context, device, CommandQueueFlags.ProfilingEnable);
Buffer buffer = Buffer.Create(context, MemFlags.ReadWrite, (IntPtr)16);
IntPtr writePtr = buffer.Map(queue, MapFlags.Write, (IntPtr)0, (IntPtr)16);
try{
unsafe {
float *arr = (float *)writePtr;
arr[0] = 2.0f;
arr[1] = 4.0f;
arr[2] = 6.0f;
arr[3] = 8.0f;
}
}
finally{
buffer.Unmap(queue, ref writePtr);
}
Assert.AreEqual(IntPtr.Zero, writePtr);
float sum = 0.0f;
IntPtr readPtr = buffer.Map(queue, MapFlags.Read, (IntPtr)0, (IntPtr)16);
try{
unsafe {
float *arr = (float *)readPtr;
sum = arr[0] + arr[1] + arr[2] + arr[3];
}
}
finally{
buffer.Unmap(queue, ref readPtr);
}
Assert.AreEqual(IntPtr.Zero, readPtr);
Assert.AreEqual(20.0f, sum);
}
public void CopyTo(Image2D dstImage, CommandQueue queue,
int srcOriginX, int srcOriginY, int dstOriginX, int dstOriginY,
int width, int height)
{
IntPtr evtHandle = IntPtr.Zero;
IntPtr[] srcOrg = new IntPtr[] { (IntPtr)srcOriginX, (IntPtr)srcOriginY, (IntPtr)0 };
IntPtr[] dstOrg = new IntPtr[] { (IntPtr)dstOriginX, (IntPtr)dstOriginY, (IntPtr)0 };
IntPtr[] region = new IntPtr[] { (IntPtr)width, (IntPtr)height, (IntPtr)1 };
unsafe
{
fixed(IntPtr *p_srcOrg = srcOrg, p_dstOrg = dstOrg, p_region = region)
{
Native.Call(Native.EnqueueCopyImage(
queue.Handle, this.Handle, dstImage.Handle,
p_srcOrg, p_dstOrg, p_region, 0, null, &evtHandle));
}
}
Event evt = new Event(evtHandle);
evt.Wait();
evt.Dispose();
}
public unsafe void WriteRaw(CommandQueue queue, IntPtr offset, IntPtr size, IntPtr srcPtr)
{
Native.Call(Native.EnqueueWriteBuffer(queue.Handle, this.handle, true, offset, size, srcPtr, 0, null, null));
}
public unsafe void ReadRaw(CommandQueue queue, IntPtr offset, IntPtr size, IntPtr destPtr)
{
Native.Call(Native.EnqueueReadBuffer(queue.Handle, this.handle, true, offset, size, destPtr, 0, null, null));
}
/// <summary>
/// Enqueue a three dimensional kernel for launch.
/// </summary>
public void EnqueueLaunch(CommandQueue queue, int globalWidth, int globalHeight, int globalDepth, int localWidth, int localHeight, int localDepth, out Event evt)
{
this.EnqueueLaunch(queue, new Dim3D(globalWidth, globalHeight, globalDepth), new Dim3D(localWidth, localHeight, localDepth), out evt);
}
/// <summary>
/// Enqueue a one dimensional kernel for launch.
/// </summary>
public void EnqueueLaunch(CommandQueue queue, int globalWorkSize, int localWorkSize, Event[] waitList, out Event evt)
{
this.EnqueueLaunch(queue, (IntPtr)globalWorkSize, (IntPtr)localWorkSize, waitList, out evt);
}
