Hi Robert.
Robert Osfield wrote:
>
> I do hope OpenCL fairs a bit better in this respect.
>
By the way: as I already mentioned in the first post the osgCuda ist based on a
kit which we
call osgPipe. In the near future it should not be too difficult to add OpenCL
with the help of the
community.
Robert Osfield wrote:
>
> I'm curious, are you able to mix and match the Driver and Runtime API's?
>
No - it is not possible to mix the APIs.
Robert Osfield wrote:
>
> Do you want to dive in a make changes to your local
> OpenSceneGraph/GraphicsThread classes get it working robustly for
> osgCuda and then post me your changes.
>
Our approach using osg::Operation is quite robust. So far we did not recognize
any drawbacks or
a lack of stability. We evaluated different approaches to give the
GraphicsThread the chance to clean
up its resources.
The easiest and simplest way is to call
OperationThread::_operationQueue->releaseAllOperations()
right before the thread stops. It is just the one new line in
GraphicsThread::run() - please see the code below
(in GraphicsThread.cpp):
Code:
void GraphicsThread::run()
{
// make the graphics context current.
GraphicsContext* graphicsContext =
dynamic_cast<GraphicsContext*>(_parent.get());
if (graphicsContext)
{
graphicsContext->makeCurrent();
graphicsContext->getState()->initializeExtensionProcs();
}
OperationThread::run();
OperationThread::_operationQueue->releaseAllOperations();
if (graphicsContext)
{
graphicsContext->releaseContext();
}
}
This works fine without touching anything else of the core code. osgCuda takes
care of adding a proper
osg::Operation to the operation-queue. Its operation then releases the CUDA
resources in its release-method.
That's it.
osgCuda is already in a good shape and needs to be tested by the community but
there is some documentation work left.
Best regards,
Mick
--
SVT Group
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=8334#8334
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