GLUTSWAPBUFFERS

Section: C Library Functions (3)
Updated: LOCAL
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BSD mandoc

NAME

glutSwapBuffers - Swaps the buffers for the current window.

LIBRARY

OpenGLUT - window

SYNOPSIS

In openglut.h Ft void Fn glutSwapBuffers void

DESCRIPTION

This function signals to OpenGLUT that you are done drawing to the Bf Li
current window Ef
for now. If your window is double-buffered ( Bf Sy
GLUT_DOUBLE Ef
param to glutInitDisplayMode()), then OpenGLUT will swap the front buffer with the back buffer.

This also computes your current frame-rate and prints the result on Bf Sy
stderr Ef
if indicated by the Bf Sy
GLUT_FPS Ef
environment variable. The computed value is not necessarily the total frame rate, if you have multiple windows, as the statistic is the total number of buffer-swaps for the entire program.

CAVEATS

This function has no effect if your window is Bf Sy
GLUT_SINGLE Ef
.

Frame rate is only calculated for double-buffered windows.

TODO

How does this interact with overlays?

Consider making Bf Sy
GLUT_FPS Ef
keep per-window stats in a multi-window program.