1 files changed, 79 insertions, 0 deletions
diff --git a/src/glut/beos/glutDstr.cpp b/src/glut/beos/glutDstr.cpp
new file mode 100644
index 0000000000..c594cfdafd
--- /dev/null
+++ b/src/glut/beos/glutDstr.cpp
@@ -0,0 +1,79 @@
+/***********************************************************
+ *	Copyright (C) 1997, Be Inc.  All rights reserved.
+ *
+ *  FILE:	glutDstr.cpp
+ *
+ *	DESCRIPTION:	convert display string into a Be options variable
+ ***********************************************************/
+
+/***********************************************************
+ *	Headers
+ ***********************************************************/
+#include <GL/glut.h>
+#include <string.h>
+#include <stdlib.h>
+#include "glutint.h"
+#include "glutState.h"
+
+/***********************************************************
+ *	FUNCTION:	glutInitDisplayString
+ *
+ *	DESCRIPTION:  sets the display string variable
+ ***********************************************************/
+void APIENTRY 
+glutInitDisplayString(const char *string)
+{
+  if (gState.displayString) {
+    free(gState.displayString);
+  }
+  if (string) {
+    gState.displayString = strdup(string);
+    if (!gState.displayString)
+      __glutFatalError("out of memory.");
+  } else
+    gState.displayString = NULL;
+}
+
+/***********************************************************
+ *	FUNCTION:	__glutConvertDisplayModeFromString
+ *
+ *	DESCRIPTION:  converts the current display mode into a BGLView
+ *		display mode, printing warnings as appropriate.
+ *
+ *	PARAMETERS:	 if options is non-NULL, the current display mode is
+ *		returned in it.
+ *
+ *	RETURNS:	1 if the current display mode is possible, else 0
+ ***********************************************************/
+int __glutConvertDisplayModeFromString(unsigned long *options) {
+	ulong newoptions = BGL_DOUBLE;
+	gState.swapHack = true;		// assume single buffered
+	
+	char *word = strtok(gState.displayString, " \t");
+	do {
+		char *cstr = strpbrk(word, "=><!~");
+		if(cstr)
+			*cstr = '\0';
+		// this is the most minimal possible parser.  scan for
+		// options that we support, and add them to newoptions
+		// this will certainly cause it to accept things that we
+		// don't actually support, but if we don't support it, the
+		// program's probably not going to work anyway.
+		if(!strcmp(word, "alpha")) {
+			newoptions |= BGL_ALPHA;
+		} else if((!strcmp(word, "acc")) || (!strcmp(word, "acca"))) {
+			newoptions |= BGL_ACCUM;
+		} else if(!strcmp(word, "depth")) {
+			newoptions |= BGL_DEPTH;
+		} else if(!strcmp(word, "double")) {
+			gState.swapHack = false;
+		} else if(!strcmp(word, "stencil")) {
+			newoptions |= BGL_STENCIL;
+		}
+	} while((word = strtok(0, " \t")) != 0);
+
+	if (options)
+		*options = newoptions;
+
+	return 1;	// assume we support it
+}