I put the code in the realize operation and it works fine. Thank you :)
On 10 December 2012 16:05, Robert Osfield <[email protected]> wrote: > Hi Carlos, > > This seems to be a bit of theme with me catching up with posts... OSG/OpenCL > integration. > > Creating OpenGL objects requires a valid graphics context, so move your set > up code to a draw callback, drawable subclass or a realize operation. > > Robet. > > > On 5 November 2012 10:47, Carlos Reig <[email protected]> wrote: >> >> 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 >> >> ------------------ >> Read this topic online here: >> http://forum.openscenegraph.org/viewtopic.php?p=50977#50977 >> >> >> >> >> >> _______________________________________________ >> osg-users mailing list >> [email protected] >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > -- -------------------------------------- Carlos Reig Matut LSyM - Instituto IRTIC Universidad de Valencia Ph. +34 96 354 3639 -- ext. 43639 http://irtic.uv.es/lsym _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
