Hi,
I want to initializatze OpenCL using the OSG context (in Windows) in order to
manipulate the OSG VBOs directly in the GPU.
For that, I need the OpenGL current context and the device context. When I had
the code wrote directly in OpenGL I used the functions wglGetCurrentContext()
and wglGetCurrentDC() for get it, but now I would to use the OSG api.
In this moment, I have a code that gets the opengl current context and the
device context in the viewer realize method. But it doesn't work.
For use Viewer::realize I have to create a child class of GraphicsOperation and
get all the parameters that I need.
Code:
class WindowsContextInfo : public osg::GraphicsOperation
public:
WindowsContextInfo():
osg::GraphicsOperation("WindowsContextInfo", false) {}
virtual void operator() (osg::GraphicsContext* gc) {
osgViewer::GraphicsHandleWin32* windowsGraphicContext =
dynamic_cast<osgViewer::GraphicsHandleWin32*> (gc);
hdc = windowsGraphicContext->getHDC();
wglContext = windowsGraphicContext->getWGLContext();
}
HDC hdc;
HGLRC wglContext;
};
In the main code, before doing viewer.realize() I attach the GraphicOperation
to the viewer:
Code:
wci = new WindowsContextInfo;
viewer.setRealizeOperation(wci.get());
viewer.realize();
And, when I'm initializating OpenCL, I put the received parameters:
Code:
cl_context_properties props[] = {
CL_CONTEXT_PLATFORM,
(cl_context_properties) clPlatform,
CL_GL_CONTEXT_KHR,
(cl_context_properties) wci.wglContext,
CL_WGL_HDC_KHR,
(cl_context_properties) wci.hdc,
0
};
Anyone knows why I get an OpenCL context creation error? I will be grateful for
any track.
Thank you!
Cheers,
Carlos
------------------
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http://forum.openscenegraph.org/viewtopic.php?p=50977#50977
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