Hi,<br>If you want to go that deep, my advice is that you read the VTK sources : vtkOpenGLPolyDataMapper includes vtkOpenGL.h that includes gl.h.<br>Sorry for not being more precise, but I am not an opengl master... :)<br>
<br>HTH<br>Jerome<br><br><div class="gmail_quote">2011/5/27 sudhanshu gupta <span dir="ltr"><<a href="mailto:sudhanshugupta2511@gmail.com">sudhanshugupta2511@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
okk <br><br>So you want to say that vtkPolyDataMapper is using OpenGL through vtkOpenGLPolyDataMapper but in OpenGl we uses gl.h ,glu.h here nothing is been shown. Can u give me a little more knowledge about that...<br>
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