/*
* Perform initialization. This usually happens on the program startup
* and restarting after glutMainLoop termination...
*/
void FGAPIENTRY glutInit( int* pargc, char** argv )
{
char* displayName = NULL;
char* geometry = NULL;
if( fgState.Initialised )
fgError( "illegal glutInit() reinitialization attempt" );
if (pargc && *pargc && argv && *argv && **argv)
{
fgState.ProgramName = strdup (*argv);
if( !fgState.ProgramName )
fgError ("Could not allocate space for the program's name.");
}
fgCreateStructure( );
fghParseCommandLineArguments ( pargc, argv, &displayName, &geometry );
/*
* Have the display created now. If there wasn't a "-display"
* in the program arguments, we will use the DISPLAY environment
* variable for opening the X display (see code above):
*/
fgPlatformInitialize( displayName );
/*
* Geometry parsing deferred until here because we may need the screen
* size.
*/
if (geometry )
{
unsigned int parsedWidth, parsedHeight;
int mask = XParseGeometry( geometry,
&fgState.Position.X, &fgState.Position.Y,
&parsedWidth, &parsedHeight );
/* TODO: Check for overflow? */
fgState.Size.X = parsedWidth;
fgState.Size.Y = parsedHeight;
if( (mask & (WidthValue|HeightValue)) == (WidthValue|HeightValue) )
fgState.Size.Use = GL_TRUE;
if( mask & XNegative )
fgState.Position.X += fgDisplay.ScreenWidth - fgState.Size.X;
if( mask & YNegative )
fgState.Position.Y += fgDisplay.ScreenHeight - fgState.Size.Y;
if( (mask & (XValue|YValue)) == (XValue|YValue) )
fgState.Position.Use = GL_TRUE;
}
}
/*
* Perform initialization. This usually happens on the program startup
* and restarting after glutMainLoop termination...
*/
void FGAPIENTRY glutInit( int* pargc, char** argv )
{
char* displayName = NULL;
char* geometry = NULL;
int i, j, argc = *pargc;
if( fgState.Initialised )
fgError( "illegal glutInit() reinitialization attempt" );
if (pargc && *pargc && argv && *argv && **argv)
{
fgState.ProgramName = strdup (*argv);
if( !fgState.ProgramName )
fgError ("Could not allocate space for the program's name.");
}
fgCreateStructure( );
fgElapsedTime( );
#ifndef _WIN32_WCE
/* check if GLUT_FPS env var is set */
{
const char *fps = getenv( "GLUT_FPS" );
if( fps )
{
sscanf( fps, "%d", &fgState.FPSInterval );
if( fgState.FPSInterval <= 0 )
fgState.FPSInterval = 5000; /* 5000 milliseconds */
}
}
displayName = getenv( "DISPLAY");
for( i = 1; i < argc; i++ )
{
if( strcmp( argv[ i ], "-display" ) == 0 )
{
if( ++i >= argc )
fgError( "-display parameter must be followed by display name" );
displayName = argv[ i ];
argv[ i - 1 ] = NULL;
argv[ i ] = NULL;
( *pargc ) -= 2;
}
else if( strcmp( argv[ i ], "-geometry" ) == 0 )
{
if( ++i >= argc )
fgError( "-geometry parameter must be followed by window "
"geometry settings" );
geometry = argv[ i ];
argv[ i - 1 ] = NULL;
argv[ i ] = NULL;
( *pargc ) -= 2;
}
else if( strcmp( argv[ i ], "-direct" ) == 0)
{
if( ! fgState.TryDirectContext )
fgError( "parameters ambiguity, -direct and -indirect "
"cannot be both specified" );
fgState.ForceDirectContext = GL_TRUE;
argv[ i ] = NULL;
( *pargc )--;
}
else if( strcmp( argv[ i ], "-indirect" ) == 0 )
{
if( fgState.ForceDirectContext )
fgError( "parameters ambiguity, -direct and -indirect "
"cannot be both specified" );
fgState.TryDirectContext = GL_FALSE;
argv[ i ] = NULL;
(*pargc)--;
}
else if( strcmp( argv[ i ], "-iconic" ) == 0 )
{
fgState.ForceIconic = GL_TRUE;
argv[ i ] = NULL;
( *pargc )--;
}
else if( strcmp( argv[ i ], "-gldebug" ) == 0 )
{
fgState.GLDebugSwitch = GL_TRUE;
argv[ i ] = NULL;
( *pargc )--;
}
else if( strcmp( argv[ i ], "-sync" ) == 0 )
{
fgState.XSyncSwitch = GL_TRUE;
argv[ i ] = NULL;
( *pargc )--;
}
}
#endif
/*
* Compact {argv}.
*/
j = 2;
for( i = 1; i < *pargc; i++, j++ )
{
if( argv[ i ] == NULL )
{
/* Guaranteed to end because there are "*pargc" arguments left */
while ( argv[ j ] == NULL )
j++;
argv[ i ] = argv[ j ];
}
}
/*
* Have the display created now. As I am too lazy to implement
* the program arguments parsing, we will have the DISPLAY
* environment variable used for opening the X display:
*
* XXX The above comment is rather unclear. We have just
* XXX completed parsing of the program arguments for GLUT
* XXX parameters. We obviously canNOT parse the application-
* XXX specific parameters. Can someone re-write the above
* XXX more clearly?
*/
fgInitialize( displayName );
/*
* Geometry parsing deffered until here because we may need the screen
* size.
*/
if (geometry )
{
int mask = XParseGeometry( geometry,
&fgState.Position.X, &fgState.Position.Y,
&fgState.Size.X, &fgState.Size.Y );
if( (mask & (WidthValue|HeightValue)) == (WidthValue|HeightValue) )
fgState.Size.Use = GL_TRUE;
if( mask & XNegative )
fgState.Position.X += fgDisplay.ScreenWidth - fgState.Size.X;
if( mask & YNegative )
fgState.Position.Y += fgDisplay.ScreenHeight - fgState.Size.Y;
if( (mask & (XValue|YValue)) == (XValue|YValue) )
fgState.Position.Use = GL_TRUE;
}
}
/*
* Perform initialization. This usually happens on the program startup
* and restarting after glutMainLoop termination...
*/
void FGAPIENTRY glutInit( int* pargc, char** argv )
{
char* displayName = NULL;
char* geometry = NULL;
int i, j, argc = *pargc;
if( fgState.Initialised )
fgError( "illegal glutInit() reinitialization attempt" );
if (pargc && *pargc && argv && *argv && **argv)
{
fgState.ProgramName = strdup (*argv);
if( !fgState.ProgramName )
fgError ("Could not allocate space for the program's name.");
}
fgCreateStructure( );
/* Get start time */
fgState.Time = fgSystemTime();
/* check if GLUT_FPS env var is set */
#ifndef _WIN32_WCE
{
const char *fps = getenv( "GLUT_FPS" );
if( fps )
{
int interval;
sscanf( fps, "%d", &interval );
if( interval <= 0 )
fgState.FPSInterval = 5000; /* 5000 millisecond default */
else
fgState.FPSInterval = interval;
}
}
displayName = getenv( "DISPLAY" );
for( i = 1; i < argc; i++ )
{
if( strcmp( argv[ i ], "-display" ) == 0 )
{
if( ++i >= argc )
fgError( "-display parameter must be followed by display name" );
displayName = argv[ i ];
argv[ i - 1 ] = NULL;
argv[ i ] = NULL;
( *pargc ) -= 2;
}
else if( strcmp( argv[ i ], "-geometry" ) == 0 )
{
if( ++i >= argc )
fgError( "-geometry parameter must be followed by window "
"geometry settings" );
geometry = argv[ i ];
argv[ i - 1 ] = NULL;
argv[ i ] = NULL;
( *pargc ) -= 2;
}
else if( strcmp( argv[ i ], "-direct" ) == 0)
{
if( fgState.DirectContext == GLUT_FORCE_INDIRECT_CONTEXT )
fgError( "parameters ambiguity, -direct and -indirect "
"cannot be both specified" );
fgState.DirectContext = GLUT_FORCE_DIRECT_CONTEXT;
argv[ i ] = NULL;
( *pargc )--;
}
else if( strcmp( argv[ i ], "-indirect" ) == 0 )
{
if( fgState.DirectContext == GLUT_FORCE_DIRECT_CONTEXT )
fgError( "parameters ambiguity, -direct and -indirect "
"cannot be both specified" );
fgState.DirectContext = GLUT_FORCE_INDIRECT_CONTEXT;
argv[ i ] = NULL;
(*pargc)--;
}
else if( strcmp( argv[ i ], "-iconic" ) == 0 )
{
fgState.ForceIconic = GL_TRUE;
argv[ i ] = NULL;
( *pargc )--;
}
else if( strcmp( argv[ i ], "-gldebug" ) == 0 )
{
fgState.GLDebugSwitch = GL_TRUE;
argv[ i ] = NULL;
( *pargc )--;
}
else if( strcmp( argv[ i ], "-sync" ) == 0 )
{
fgState.XSyncSwitch = GL_TRUE;
argv[ i ] = NULL;
( *pargc )--;
}
}
/* Compact {argv}. */
for( i = j = 1; i < *pargc; i++, j++ )
{
/* Guaranteed to end because there are "*pargc" arguments left */
while ( argv[ j ] == NULL )
j++;
if ( i != j )
argv[ i ] = argv[ j ];
}
#endif /* _WIN32_WCE */
/*
* Have the display created now. If there wasn't a "-display"
* in the program arguments, we will use the DISPLAY environment
* variable for opening the X display (see code above):
*/
fghInitialize( displayName );
/*
* Geometry parsing deffered until here because we may need the screen
* size.
*/
if (geometry )
{
unsigned int parsedWidth, parsedHeight;
int mask = XParseGeometry( geometry,
&fgState.Position.X, &fgState.Position.Y,
&parsedWidth, &parsedHeight );
/* TODO: Check for overflow? */
fgState.Size.X = parsedWidth;
fgState.Size.Y = parsedHeight;
if( (mask & (WidthValue|HeightValue)) == (WidthValue|HeightValue) )
fgState.Size.Use = GL_TRUE;
if( mask & XNegative )
fgState.Position.X += fgDisplay.ScreenWidth - fgState.Size.X;
if( mask & YNegative )
fgState.Position.Y += fgDisplay.ScreenHeight - fgState.Size.Y;
if( (mask & (XValue|YValue)) == (XValue|YValue) )
fgState.Position.Use = GL_TRUE;
}
}
