Il 04/07/19 11:17, Pieter Barendrecht ha scritto:
I have a Qt application with a QOpenGLWidget for displaying 3D meshes. Now I'd like to use an external library (OpenSubdiv in this case, see e.g. http://graphics.pixar.com/opensubdiv/docs/api_overview.html) to generate additional OpenGL buffers, which I can then bind and use in the context of my QOpenGLWidget. Currently the application segfaults when OpenSubdiv tries to generate these buffers — it does not seem to have a valid OpenGL context.
Does OpenSubdiv simply require a current context when asked to generate buffers? You can achieve that by simply calling widget->makeCurrent().
HTH, -- Giuseppe D'Angelo | giuseppe.dang...@kdab.com | Senior Software Engineer KDAB (France) S.A.S., a KDAB Group company Tel. France +33 (0)4 90 84 08 53, http://www.kdab.com KDAB - The Qt, C++ and OpenGL Experts
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