4 * Display message posting, context buffer swapping.
6 * Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
7 * Written by Pawel W. Olszta, <olszta@sourceforge.net>
8 * Creation date: Fri Dec 3 1999
10 * Permission is hereby granted, free of charge, to any person obtaining a
11 * copy of this software and associated documentation files (the "Software"),
12 * to deal in the Software without restriction, including without limitation
13 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
14 * and/or sell copies of the Software, and to permit persons to whom the
15 * Software is furnished to do so, subject to the following conditions:
17 * The above copyright notice and this permission notice shall be included
18 * in all copies or substantial portions of the Software.
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
21 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
23 * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
24 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
25 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
32 #define G_LOG_DOMAIN "freeglut-display"
34 #include "../include/GL/freeglut.h"
35 #include "freeglut_internal.h"
38 /* -- INTERFACE FUNCTIONS -------------------------------------------------- */
41 * Marks the current window to have the redisplay performed when possible...
43 void FGAPIENTRY glutPostRedisplay( void )
45 freeglut_assert_ready;
46 freeglut_assert_window;
47 fgStructure.Window->State.Redisplay = TRUE;
51 * Swaps the buffers for the current window (if any)
53 void FGAPIENTRY glutSwapBuffers( void )
55 freeglut_assert_ready;
56 freeglut_assert_window;
61 if ( ! fgStructure.Window->Window.DoubleBuffered )
64 #if TARGET_HOST_UNIX_X11
65 glXSwapBuffers( fgDisplay.Display, fgStructure.Window->Window.Handle );
66 #elif TARGET_HOST_WIN32
67 SwapBuffers( fgStructure.Window->Window.Device );
70 /* GLUT_FPS env var support */
71 if (fgState.FPSInterval) {
72 GLint t = glutGet(GLUT_ELAPSED_TIME);
74 if (fgState.SwapTime == 0)
76 else if (t - fgState.SwapTime > fgState.FPSInterval) {
77 float time = 0.001f * (t - fgState.SwapTime);
78 float fps = (float) fgState.SwapCount / time;
79 fprintf(stderr, "freeglut: %d frames in %.2f seconds = %.2f FPS\n",
80 fgState.SwapCount, time, fps);
82 fgState.SwapCount = 0;
88 * Mark appropriate window to be displayed
90 void FGAPIENTRY glutPostWindowRedisplay( int windowID )
94 freeglut_assert_ready;
95 window = fgWindowByID( windowID );
96 freeglut_return_if_fail( window != NULL );
97 window->State.Redisplay = TRUE;
100 /*** END OF FILE ***/