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exoide's picture

CLOO - Doubt using ComputeCommandQueue.Read()

Posted Thursday, 18 March, 2010 - 12:59 by exoide in

Hi there,

This is the first time I use CLOO, I've the version 0.7.0.

In the examples I've seen the Read() method returns the result and requires only 5 parameters. But in the current version it returns nothing and uses 6 parameters, here's my sentence:

float[] result = new float[1];
queue.Read(bufferResult, false, 0, 1, result, null);

But I get the following error " cannot convert from 'float[]' to 'System.IntPtr' " in the fifth parameter.

Can someone help me fix this?

Thank you.

‹ Creating Projects on Win7 OpenTK and WCF seemingly interfere with another ›

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nythrix's picture

Re: CLOO - Doubt using ComputeCommandQueue.Read()

Posted Thursday, 18 March, 2010 - 19:10 by nythrix

The following comes from the "VectorAdd" example (in Clootils):

result = new float[ 1 ];
GCHandle resultHandle = GCHandle.Alloc( result, GCHandleType.Pinned );
commands.Read(bufferResult, false, 0, count, resultHandle.AddrOfPinnedObject(), null );
// when done with the queue
commands.Finish();
resultHandle.Free();

This method has replaced the one you mention because the predecessor wasn't working under all circumstances.