Permalink
Switch branches/tags
Nothing to show
Find file
Fetching contributors…
Cannot retrieve contributors at this time
99 lines (88 sloc) 3.39 KB
/*
* freeglut_display.c
*
* Display message posting, context buffer swapping.
*
* Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
* Written by Pawel W. Olszta, <olszta@sourceforge.net>
* Creation date: Fri Dec 3 1999
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "freeglut.h"
#include "freeglut_internal.h"
/* -- INTERFACE FUNCTIONS -------------------------------------------------- */
/*
* Marks the current window to have the redisplay performed when possible...
*/
void FGAPIENTRY glutPostRedisplay( void )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutPostRedisplay" );
FREEGLUT_EXIT_IF_NO_WINDOW ( "glutPostRedisplay" );
fgStructure.CurrentWindow->State.Redisplay = GL_TRUE;
}
/*
* Swaps the buffers for the current window (if any)
*/
void FGAPIENTRY glutSwapBuffers( void )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSwapBuffers" );
FREEGLUT_EXIT_IF_NO_WINDOW ( "glutSwapBuffers" );
/*
* "glXSwapBuffers" already performs an implicit call to "glFlush". What
* about "SwapBuffers"?
*/
glFlush( );
if( ! fgStructure.CurrentWindow->Window.DoubleBuffered )
return;
#if TARGET_HOST_POSIX_X11
glXSwapBuffers( fgDisplay.Display, fgStructure.CurrentWindow->Window.Handle );
#elif TARGET_HOST_MS_WINDOWS
SwapBuffers( fgStructure.CurrentWindow->Window.Device );
#endif
/* 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 = 0.001f * ( 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;
}
}
}
/*
* Mark appropriate window to be displayed
*/
void FGAPIENTRY glutPostWindowRedisplay( int windowID )
{
SFG_Window* window;
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutPostWindowRedisplay" );
window = fgWindowByID( windowID );
freeglut_return_if_fail( window );
window->State.Redisplay = GL_TRUE;
}
/*** END OF FILE ***/