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README | 10 years ago | |
globjwin.cpp | 9 months ago | |
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main.cpp | 13 years ago | |
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overlay.pro | 13 years ago |
README
The overlay example This example program shows how to use OpenGL overlays with the TQt OpenGL Extension. It contains a QGLWidget with a relatively expensive redrawing operation, and rubber-band drawing in the overlay plane. Using the overlay has the advantage that the rubber-band may be drawn and erased without damaging the image in the main plane, so costly redraws are avoided.