Changed the overlay (freeglut_state.c:662) to return FALSE, as it's not imp

[freeglut] / freeglut-1.3 / freeglut_misc.c

diff --git a/freeglut-1.3/freeglut_misc.c b/freeglut-1.3/freeglut_misc.c
index 4be9a3b..496ca45 100644 (file)
--- a/freeglut-1.3/freeglut_misc.c
+++ b/freeglut-1.3/freeglut_misc.c
@@ -32,7 +32,7 @@
 #define  G_LOG_DOMAIN  "freeglut-misc"
 
 #include "../include/GL/freeglut.h"
-#include "../include/GL/freeglut_internal.h"
+#include "freeglut_internal.h"
 
 /*
  * TODO BEFORE THE STABLE RELEASE:
@@ -50,80 +50,59 @@
  */
 int FGAPIENTRY glutExtensionSupported( const char* extension )
 {
-    /*
-     * Grab the current context's OpenGL extensions
-     * and create a new GLib lexical analyzer...
-     */
-    gchar *glExtensions = (gchar *) glGetString( GL_EXTENSIONS );
-    GScanner* scanner = g_scanner_new( NULL );
-    gint i;
-
-    /*
-     * Make sure there is a current window, and thus -- a current context available
-     */
-    freeglut_assert_ready; freeglut_return_val_if_fail( fgStructure.Window != NULL, 0 );
-
-    /*
-     * Fail if there is no extension, extensions or scanner available
-     */
-    freeglut_return_val_if_fail( (scanner != NULL) && (strlen( extension ) > 0)
-                                          && (strlen( glExtensions ) > 0), 0 );
-
-    /*
-     * Check if the extension itself looks valid
-     */
-    for( i=0; i<(gint) strlen( extension ); i++ )
-        if( extension[ i ] == ' ' )
-            return( 0 );
+  const char *extensions;
+  const char *ptr;
+  int len = strlen ( extension ) ;
+
+  /*
+   * Make sure there is a current window, and thus -- a current context available
+   */
+  freeglut_assert_ready;
+  freeglut_return_val_if_fail( fgStructure.Window != NULL, 0 );
+
+  /*
+   * Note it is safe to query the extensions
+   */
+  extensions = glGetString(GL_EXTENSIONS);
+
+  freeglut_return_val_if_fail( extensions != NULL, 0 );
+
+  /*
+   * Check if the extension itself looks valid
+   */
+  if ( strchr ( extension, ' ' ) != NULL )
+    return( 0 );
 
+  /*
+   * Look for our extension
+   */
+  for (ptr = extensions; *ptr;)
+  {
     /*
-     * Set the scanner's input name (for debugging)
+     * Is it the current extension?
      */
-    scanner->input_name = "glutExtensionSupported()";
+    if ( strncmp ( extension, extensions, len ) == 0 )
+      return 1 ;
 
     /*
-     * Start the lexical analysis of the extensions string
+     * No, go find the next extension.  They are separated from each other by one or more blank spaces.
      */
-    g_scanner_input_text( scanner, glExtensions, strlen( glExtensions ) );
+    ptr = strchr ( ptr + len, ' ' ) ;
 
     /*
-     * While there are any more tokens to be checked...
+     * If we ran off the end of the "extensions" character string, we didn't find it.  Return failure.
      */
-    while( !g_scanner_eof( scanner ) )
-    {
-        /*
-         * Actually we're expecting only string tokens
-         */
-        GTokenType tokenType = g_scanner_get_next_token( scanner );
+    if ( !ptr ) return 0 ;
 
-        /*
-         * We are looking for identifiers
-         */
-        if( tokenType == G_TOKEN_IDENTIFIER )
-        {
-            /*
-             * Compare the token and the extension string
-             */
-            if( strcmp( scanner->value.v_identifier, extension ) == 0 )
-            {
-                /*
-                 * OKi, we have found the extension string we've been looking for
-                 */
-                g_scanner_destroy( scanner );
-                return( 1 );
-            }
-        }
-    }
+    while ( *ptr == ' ' )
+      ptr++ ;
+  }
 
-    /*
-     * Well, looks like we have failed to find the extension string
-     */
-    g_scanner_destroy( scanner );
-    return( 0 );
+  return 0 ;
 }
 
 /*
- * This function reports all the errors that happened till now
+ * This function reports all the OpenGL errors that happened till now
  */
 void FGAPIENTRY glutReportErrors( void )
 {
@@ -140,7 +119,7 @@ void FGAPIENTRY glutReportErrors( void )
 #       undef  G_LOG_DOMAIN
 #       define G_LOG_DOMAIN ((gchar *) 0)
 
-        g_warning( "GL error: %s", gluErrorString( error ) );
+        fgWarning( "GL error: %s", gluErrorString( error ) );
 
 #       undef   G_LOG_DOMAIN
 #       define  G_LOG_DOMAIN  "freeglut_misc.c"
@@ -155,10 +134,10 @@ void FGAPIENTRY glutReportErrors( void )
 /*
  * Turns the ignore key auto repeat feature on and off
  */
-void FGAPIENTRY glutIgnoreKeyRepeat( int ignore )
+void FGAPIENTRY glutIgnoreKeyRepeat( int ignore )  /* DEPRECATED 11/4/02 - Do not use */
 {
     /*
-     * This is simple and not demanging...
+     * This is simple and not damaging...
      */
     fgState.IgnoreKeyRepeat = ignore ? TRUE : FALSE;
 }
@@ -202,7 +181,7 @@ void FGAPIENTRY glutSetKeyRepeat( int repeatMode )
         /*
          * Whoops, this was not expected at all
          */
-        g_assert_not_reached();
+        break;
     }
 
 #endif