-
- /* GLUT_FPS env var support */
- if (fgState.FPSInterval) {
- GLint t = glutGet(GLUT_ELAPSED_TIME);
- fgState.SwapCount++;
- if (fgState.SwapTime == 0)
- fgState.SwapTime = t;
- else if (t - fgState.SwapTime > fgState.FPSInterval) {
- float time = 0.001 * (t - fgState.SwapTime);
- float fps = (float) fgState.SwapCount / time;
- fprintf(stderr, "FreeGLUT: %d frames in %.2f seconds = %.2f FPS\n",
- fgState.SwapCount, time, fps);
- fgState.SwapTime = t;
- fgState.SwapCount = 0;
- }
- }