/*
* The settings for the current freeglut session
*/
-SFG_State fgState;
+SFG_State fgState = { { -1, -1, FALSE }, { 300, 300, TRUE }, GLUT_RGBA | GLUT_SINGLE | GLUT_DEPTH,
+ FALSE, TRUE, FALSE, FALSE, FALSE, TRUE,
+#ifdef TARGET_HOST_WIN32
+ { 0, FALSE },
+#else
+ { { 0, 0 }, FALSE },
+#endif
+ { NULL, NULL }, NULL, NULL, NULL, { 640, 480, TRUE }, 16, 72, GLUT_ACTION_EXIT, GLUT_EXEC_STATE_INIT } ;
/* -- PRIVATE FUNCTIONS ---------------------------------------------------- */
*/
if( atom == 0 )
{
- GLboolean retval;
-
/*
* Make sure the unitialized fields are reset to zero
*/
ZeroMemory( &wc, sizeof(WNDCLASS) );
/*
- * Each of the windows should have it's own device context...
+ * Each of the windows should have its own device context...
*/
wc.style = CS_OWNDC;
wc.lpfnWndProc = fgWindowProc;
/*
* Register the window class
*/
- retval = RegisterClass( &wc );
- assert( retval != FALSE );
+ atom = RegisterClass( &wc );
+ assert( atom != 0 );
}
/*
*/
while ( (timer = fgState.Timers.First) != NULL )
{
- fgListRemove(&fgState.Timers, &timer->Node);
- free(timer);
+ fgListRemove ( &fgState.Timers, &timer->Node ) ;
+ free ( timer ) ;
}
/*
*/
fgJoystickClose();
+ /*
+ * Reset the state structure
+ */
+
+ fgState.Position.X = -1 ;
+ fgState.Position.Y = -1 ;
+ fgState.Position.Use = FALSE ;
+
+ fgState.Size.X = 300 ;
+ fgState.Size.Y = 300 ;
+ fgState.Size.Use = TRUE ;
+
+ /*
+ * The default display mode to be used
+ */
+ fgState.DisplayMode = GLUT_RGBA | GLUT_SINGLE | GLUT_DEPTH;
+
+ fgState.ForceDirectContext = FALSE;
+ fgState.TryDirectContext = TRUE;
+ fgState.ForceIconic = FALSE;
+ fgState.GLDebugSwitch = FALSE;
+ fgState.XSyncSwitch = FALSE;
+ fgState.ActionOnWindowClose = GLUT_ACTION_EXIT ;
+ fgState.ExecState = GLUT_EXEC_STATE_INIT ;
+
+ /*
+ * Assume we want to ignore the automatic key repeat
+ */
+ fgState.IgnoreKeyRepeat = TRUE;
+
+ /*
+ * Set the default game mode settings
+ */
+ fgState.GameModeSize.X = 640;
+ fgState.GameModeSize.Y = 480;
+ fgState.GameModeDepth = 16;
+ fgState.GameModeRefresh = 72;
+
+ fgState.Time.Set = FALSE ;
+
+ fgState.Timers.First = fgState.Timers.Last = NULL ;
+ fgState.IdleCallback = NULL ;
+ fgState.MenuStateCallback = (FGCBmenuState)NULL ;
+ fgState.MenuStatusCallback = (FGCBmenuStatus)NULL ;
+
#if TARGET_HOST_UNIX_X11
/*
*/
void FGAPIENTRY glutInit( int* pargc, char** argv )
{
- char* geometrySettings = NULL;
char* displayName = NULL;
int i, j, argc = *pargc;
fgCreateStructure();
/*
- * Fill in the default values that have not been passed in yet.
- */
- if( fgState.Position.Use == FALSE )
- {
- fgState.Position.X = -1;
- fgState.Position.Y = -1;
- }
-
- if( fgState.Size.Use == FALSE )
- {
- fgState.Size.X = 300;
- fgState.Size.Y = 300;
- fgState.Size.Use = TRUE;
- }
-
- /*
- * Some more settings to come
- */
- fgState.ForceDirectContext = FALSE;
- fgState.TryDirectContext = TRUE;
- fgState.ForceIconic = FALSE;
- fgState.GLDebugSwitch = FALSE;
- fgState.XSyncSwitch = FALSE;
-
- /*
- * Assume we want to ignore the automatic key repeat
- */
- fgState.IgnoreKeyRepeat = TRUE;
-
- /*
- * The default display mode to be used
- */
- fgState.DisplayMode = GLUT_RGBA | GLUT_SINGLE | GLUT_DEPTH;
-
- /*
- * Set the default game mode settings
- */
- fgState.GameModeSize.X = 640;
- fgState.GameModeSize.Y = 480;
- fgState.GameModeDepth = 16;
- fgState.GameModeRefresh = 72;
-
- /*
* Remember the function's call time
*/
-#ifndef WIN32
+#if TARGET_HOST_UNIX_X11
gettimeofday(&fgState.Time.Value, NULL);
-#else
+#elif TARGET_HOST_WIN32
fgState.Time.Value = timeGetTime();
#endif
fgState.Time.Set = TRUE;
*/
else if( strcmp( argv[ i ], "-geometry" ) == 0 )
{
- /*
- * Again, check if there is at least one more argument
- */
- if( ++i >= argc )
- fgError( "-geometry parameter must be followed by window geometry settings" );
-
- /*
- * Otherwise make a duplicate of the geometry settings...
- */
- geometrySettings = strdup( argv[ i ] );
+ int result, x, y;
+ unsigned int w, h;
+
+ /*
+ * Again, check if there is at least one more argument
+ */
+ if ( ++i >= argc )
+ fgError( "-geometry parameter must be followed by window geometry settings" );
+
+ /*
+ * Otherwise scan the geometry settings...
+ */
+ result = sscanf ( argv[i], "%dx%d+%d+%d", &x, &y, &w, &h );
+
+ /*
+ * Check what we have been supplied with...
+ */
+ if ( result > 3 )
+ fgState.Size.Y = h ;
+
+ if ( result > 2 )
+ fgState.Size.X = w ;
+
+ if( result > 1 )
+ {
+ if( y < 0 )
+ fgState.Position.Y = fgDisplay.ScreenHeight + y - fgState.Size.Y;
+ else
+ fgState.Position.Y = y;
+ }
- /*
- * Have both arguments removed
- */
- argv[ i - 1 ] = NULL;
- argv[ i ] = NULL;
- (* pargc) -= 2;
+ if( result > 0 )
+ {
+ if( x < 0 )
+ fgState.Position.X = fgDisplay.ScreenWidth + x - fgState.Size.X;
+ else
+ fgState.Position.X = x;
+ }
+
+ /*
+ * Have both arguments removed
+ */
+ argv[ i - 1 ] = NULL;
+ argv[ i ] = NULL;
+ (* pargc) -= 2;
}
/*
/*
* Have the arguments list compacted now
*/
- for( i=1; i<argc; i++ )
+ j = 2 ;
+ for( i = 1; i < *pargc; i++, j++ )
{
- if( argv[ i ] == NULL )
- {
- for( j=i; j<argc; j++ )
- {
- if( argv[ j ] != NULL )
- {
- argv[ i ] = argv[ j ];
- argv[ j ] = NULL;
- }
- }
- }
+ if( argv[ i ] == NULL )
+ {
+ while ( argv[j] == NULL ) j++ ; /* Guaranteed to end because there are "*pargc" arguments left */
+ argv[i] = argv[j] ;
+ }
}
/*
*/
fgInitialize( displayName );
-#if TARGET_HOST_UNIX_X11
- /*
- * We can process the default window geometry settings safely now
- *
- * WARNING: have this rewritten to be portable. That won't be hard.
- */
- if( geometrySettings != NULL )
- {
- int result, x, y;
- unsigned int w, h;
-
- /*
- * Have the settings parsed now. This is easy.
- * We will use the XParseGeometry function.
- */
- result = XParseGeometry( geometrySettings, &x, &y, &w, &h );
-
- /*
- * Check what we have been supplied with...
- */
- if( (result & WidthValue) && (w >= 0) )
- fgState.Size.X = w;
-
- if( (result & HeightValue) && (h >= 0) )
- fgState.Size.Y = h;
-
- if( result & XValue )
- {
- if( result & XNegative )
- fgState.Position.X = fgDisplay.ScreenWidth + x - fgState.Size.X;
- else
- fgState.Position.X = x;
- }
-
- if( result & YValue )
- {
- if( result & YNegative )
- fgState.Position.Y = fgDisplay.ScreenHeight + y - fgState.Size.Y;
- else
- fgState.Position.Y = y;
- }
-
- /*
- * Free the geometry settings string
- */
- free( geometrySettings );
- }
-#endif
-
/*
* Check for the minus one settings for both position and size...
*/
/*
* The settings can be disables when both values are negative
*/
- if( (width >= 0) && (height >= 0) )
+ if( (width > 0) && (height > 0) )
{
/*
* We want to specify the initial size of each of the windows
else
{
/*
- * The initial size of each of the windows is specified by the wm
+ * The initial size of each of the windows is specified by the wm (officially this is an error condition)
*/
fgState.Size.X = -1;
fgState.Size.Y = -1;
value = strtol( valueString, NULL, 0 );
/*
- * Now we need to match the capability string and it's ID
+ * Now we need to match the capability string and its ID
*/
for( i=0; g_Tokens[ i ]!=NULL; i++ )
{
}
#endif
+#define NUM_TOKENS 28
+static char* Tokens[] =
+{
+ "alpha", "acca", "acc", "blue", "buffer", "conformant", "depth", "double", "green",
+ "index", "num", "red", "rgba", "rgb", "luminance", "stencil", "single", "stereo", "samples",
+ "slow", "win32pdf", "xvisual", "xstaticgray", "xgrayscale", "xstaticcolor", "xpseudocolor",
+ "xtruecolor", "xdirectcolor"
+};
+
+static int TokenLengths[] =
+{
+ 5, 4, 3, 4, 6, 10, 5, 6, 5,
+ 5, 3, 3, 4, 3, 9, 7, 6, 6, 7,
+ 4, 8, 7, 11, 10, 12, 12,
+ 10, 12
+};
+
void FGAPIENTRY glutInitDisplayString( char* displayMode )
{
+ int glut_state_flag = 0 ;
+ /*
+ * Unpack a lot of options from a character string. The options are delimited by blanks or tabs.
+ */
+ char *token ;
+ int len = strlen ( displayMode ) ;
+ char *buffer = malloc ( (len+1) * sizeof(char) ) ;
+ memcpy ( buffer, displayMode, len ) ;
+ buffer[len] = '\0' ;
+
+ token = strtok ( buffer, " \t" ) ;
+ while ( token )
+ {
+ /*
+ * Process this token
+ */
+ int i ;
+ for ( i = 0; i < NUM_TOKENS; i++ )
+ {
+ if ( strncmp ( token, Tokens[i], TokenLengths[i] ) == 0 ) break ;
+ }
+
+ switch ( i )
+ {
+ case 0 : /* "alpha": Alpha color buffer precision in bits */
+ glut_state_flag |= GLUT_ALPHA ; /* Somebody fix this for me! */
+ break ;
+
+ case 1 : /* "acca": Red, green, blue, and alpha accumulation buffer precision in bits */
+ break ;
+
+ case 2 : /* "acc": Red, green, and blue accumulation buffer precision in bits with zero bits alpha */
+ glut_state_flag |= GLUT_ACCUM ; /* Somebody fix this for me! */
+ break ;
+
+ case 3 : /* "blue": Blue color buffer precision in bits */
+ break ;
+
+ case 4 : /* "buffer": Number of bits in the color index color buffer */
+ break ;
+
+ case 5 : /* "conformant": Boolean indicating if the frame buffer configuration is conformant or not */
+ break ;
+
+ case 6 : /* "depth": Number of bits of precsion in the depth buffer */
+ glut_state_flag |= GLUT_DEPTH ; /* Somebody fix this for me! */
+ break ;
+
+ case 7 : /* "double": Boolean indicating if the color buffer is double buffered */
+ glut_state_flag |= GLUT_DOUBLE ;
+ break ;
+
+ case 8 : /* "green": Green color buffer precision in bits */
+ break ;
+
+ case 9 : /* "index": Boolean if the color model is color index or not */
+ glut_state_flag |= GLUT_INDEX ;
+ break ;
+
+ case 10 : /* "num": A special capability name indicating where the value represents the Nth frame buffer configuration matching the description string */
+ break ;
+
+ case 11 : /* "red": Red color buffer precision in bits */
+ break ;
+
+ case 12 : /* "rgba": Number of bits of red, green, blue, and alpha in the RGBA color buffer */
+ glut_state_flag |= GLUT_RGBA ; /* Somebody fix this for me! */
+ break ;
+
+ case 13 : /* "rgb": Number of bits of red, green, and blue in the RGBA color buffer with zero bits alpha */
+ glut_state_flag |= GLUT_RGB ; /* Somebody fix this for me! */
+ break ;
+
+ case 14 : /* "luminance": Number of bits of red in the RGBA and zero bits of green, blue (alpha not specified) of color buffer precision */
+ glut_state_flag |= GLUT_LUMINANCE ; /* Somebody fix this for me! */
+ break ;
+
+ case 15 : /* "stencil": Number of bits in the stencil buffer */
+ glut_state_flag |= GLUT_STENCIL ; /* Somebody fix this for me! */
+ break ;
+
+ case 16 : /* "single": Boolean indicate the color buffer is single buffered */
+ glut_state_flag |= GLUT_SINGLE ;
+ break ;
+
+ case 17 : /* "stereo": Boolean indicating the color buffer supports OpenGL-style stereo */
+ glut_state_flag |= GLUT_STEREO ;
+ break ;
+
+ case 18 : /* "samples": Indicates the number of multisamples to use based on GLX's SGIS_multisample extension (for antialiasing) */
+ glut_state_flag |= GLUT_MULTISAMPLE ; /* Somebody fix this for me! */
+ break ;
+
+ case 19 : /* "slow": Boolean indicating if the frame buffer configuration is slow or not */
+ break ;
+
+ case 20 : /* "win32pdf": matches the Win32 Pixel Format Descriptor by number */
+#ifdef TARGET_HOST_WIN32
+#endif
+ break ;
+
+ case 21 : /* "xvisual": matches the X visual ID by number */
+#ifdef TARGET_HOST_UNIX_X11
+#endif
+ break ;
+
+ case 22 : /* "xstaticgray": boolean indicating if the frame buffer configuration's X visual is of type StaticGray */
+#ifdef TARGET_HOST_UNIX_X11
+#endif
+ break ;
+
+ case 23 : /* "xgrayscale": boolean indicating if the frame buffer configuration's X visual is of type GrayScale */
+#ifdef TARGET_HOST_UNIX_X11
+#endif
+ break ;
+
+ case 24 : /* "xstaticcolor": boolean indicating if the frame buffer configuration's X visual is of type StaticColor */
+#ifdef TARGET_HOST_UNIX_X11
+#endif
+ break ;
+
+ case 25 : /* "xpseudocolor": boolean indicating if the frame buffer configuration's X visual is of type PseudoColor */
+#ifdef TARGET_HOST_UNIX_X11
+#endif
+ break ;
+
+ case 26 : /* "xtruecolor": boolean indicating if the frame buffer configuration's X visual is of type TrueColor */
+#ifdef TARGET_HOST_UNIX_X11
+#endif
+ break ;
+
+ case 27 : /* "xdirectcolor": boolean indicating if the frame buffer configuration's X visual is of type DirectColor */
+#ifdef TARGET_HOST_UNIX_X11
+#endif
+ break ;
+
+ case 28 : /* Unrecognized */
+ printf ( "WARNING - Display string token not recognized: %s\n", token ) ;
+ break ;
+ }
+
+ token = strtok ( NULL, " \t" ) ;
+ }
+
+ free ( buffer ) ;
+
+ /*
+ * We will make use of this value when creating a new OpenGL context...
+ */
+ fgState.DisplayMode = glut_state_flag;
}
/*** END OF FILE ***/
projects / freeglut / blobdiff