Fixed super bug where framebuffer resizes would result in black screens. Also framebuffer resizes are done only if the size actually changes now. Possible future idea: do not resize if all sizes are zero.
Fixed super bug where framebuffer resizes would result in black screens.
Also framebuffer resizes are done only if the size actually changes now.
Possible future idea: do not resize if all sizes are zero.

dasmysh/OGLFrameworkLib_uulm,dasmysh/OGLFrameworkLib_uulm