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qt3/examples/opengl/overlay
Timothy Pearson bd0f3345a9
Add Qt3 development HEAD version
14 years ago
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README Add Qt3 development HEAD version 14 years ago
globjwin.cpp Add Qt3 development HEAD version 14 years ago
globjwin.h Add Qt3 development HEAD version 14 years ago
glteapots.cpp Add Qt3 development HEAD version 14 years ago
glteapots.h Add Qt3 development HEAD version 14 years ago
main.cpp Add Qt3 development HEAD version 14 years ago
overlay.doc Add Qt3 development HEAD version 14 years ago
overlay.pro Add Qt3 development HEAD version 14 years ago

README

The overlay example

This example program shows how to use OpenGL overlays with the Qt 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.