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<p class=MsoNormal><span lang=EN-US>Hello,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I’m developing a GPU based raycaster
that I’d like to integrate into vtk. I am fairly new to vtk, so please be
patient if my questions seem to be trivial.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I obviously need hardware acceleration for
the program, but somehow I seem to be unable to get it working. I’m
developing under Vista and created a render window by calling <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>HWND myHandle =
(HWND)this->Handle.ToPointer();<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>renderWindow=vtkWin32OpenGLRenderWindow::New();<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>renderWindow->SetParentId(myHandle);<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>int isHardwareAccelerated =
renderWindow->IsDirect();<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>from a .NET user control. Unfortunately
renderWindow->IsDirect() always returns 0.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US> Furthermore (IMHO as a result of the
problem explained above) I can not load any OpenGL extensions:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>vtkOpenGLExtensionManager *extensions =
vtkOpenGLExtensionManager::New();<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>extensions->SetRenderWindow(this->renderWindow);<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> int
supports_GL_1_3=extensions->ExtensionSupported("GL_VERSION_1_3");<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> int
supports_GL_1_4=extensions->ExtensionSupported("GL_VERSION_1_4");<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> int
supports_GL_1_5=extensions->ExtensionSupported("GL_VERSION_1_5");<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> int supports_GL_2_0=extensions->ExtensionSupported("GL_VERSION_2_0");<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>gives me all zeros. <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Is there a method to enable hardware
acceleration or am I missing a step? Or do you have any Idea how to identify
the problem?<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Thanks in advance!<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Cheers,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Stefan<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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