e5649d1101
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@86 7f0cb862-5218-0410-a997-914c9d46530a
139 lines
3.8 KiB
C
139 lines
3.8 KiB
C
/*
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* freeglut_display.c
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*
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* Display message posting, context buffer swapping.
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*
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* Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
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* Written by Pawel W. Olszta, <olszta@sourceforge.net>
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* Creation date: Fri Dec 3 1999
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#define G_LOG_DOMAIN "freeglut-display"
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#include "../include/GL/freeglut.h"
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#include "freeglut_internal.h"
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/* -- INTERFACE FUNCTIONS -------------------------------------------------- */
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/*
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* Marks the current window to have the redisplay performed when possible...
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*/
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void FGAPIENTRY glutPostRedisplay( void )
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{
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/*
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* Is there a current window set?
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*/
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freeglut_assert_ready; freeglut_assert_window;
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/*
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* Just mark the window as one that we need to redisplay...
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*/
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fgStructure.Window->State.Redisplay = TRUE;
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}
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/*
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* Swaps the buffers for the current window (if any)
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*/
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void FGAPIENTRY glutSwapBuffers( void )
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{
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/*
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* As long as we've got a current window set...
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*/
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freeglut_assert_ready; freeglut_assert_window;
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/*
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* Have the mouse cursor and/or the menus drawn for the current window
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*/
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fgDisplayMenu();
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fgDisplayCursor();
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/*
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* Make sure the current context is flushed
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*/
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glFlush();
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/*
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* If it's single-buffered, we shouldn't be here.
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*/
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if ( ! fgStructure.Window->Window.DoubleBuffered ) return ;
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#if TARGET_HOST_UNIX_X11
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/*
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* Issue the glXSwapBuffers call and be done with it
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*/
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glXSwapBuffers( fgDisplay.Display, fgStructure.Window->Window.Handle );
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#elif TARGET_HOST_WIN32
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/*
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* Swap the window's buffers
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*/
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SwapBuffers( fgStructure.Window->Window.Device );
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#endif
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/* GLUT_FPS env var support */
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if (fgState.FPSInterval) {
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GLint t = glutGet(GLUT_ELAPSED_TIME);
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fgState.SwapCount++;
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if (fgState.SwapTime == 0)
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fgState.SwapTime = t;
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else if (t - fgState.SwapTime > fgState.FPSInterval) {
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float time = 0.001 * (t - fgState.SwapTime);
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float fps = (float) fgState.SwapCount / time;
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fprintf(stderr, "freeglut: %d frames in %.2f seconds = %.2f FPS\n",
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fgState.SwapCount, time, fps);
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fgState.SwapTime = t;
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fgState.SwapCount = 0;
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}
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}
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}
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/*
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* Mark appropriate window to be displayed
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*/
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void FGAPIENTRY glutPostWindowRedisplay( int windowID )
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{
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SFG_Window* window;
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freeglut_assert_ready;
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/*
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* Try looking for the window
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*/
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window = fgWindowByID( windowID );
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/*
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* If failed, return
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*/
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freeglut_return_if_fail( window != NULL );
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/*
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* Otherwise mark the window for being redisplayed
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*/
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window->State.Redisplay = TRUE;
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}
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/*** END OF FILE ***/
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