X-Git-Url: http://git.ithinksw.org/ITKit.git/blobdiff_plain/4701dfd179c4ea4a898bc394ddbb138a1bc4f6b4..HEAD:/ITWindowEffect.m

diff --git a/ITWindowEffect.m b/ITWindowEffect.m
index 300819d..a99f54a 100644
--- a/ITWindowEffect.m
+++ b/ITWindowEffect.m
@@ -1,12 +1,14 @@
 #import "ITWindowEffect.h"
 #import "ITTransientStatusWindow.h"
-
+#import <OpenGL/gl.h>
+#import <OpenGL/glu.h>
+#import <OpenGL/glext.h>
 
 @implementation ITWindowEffect
 
 + (NSArray *)effectClasses
 {
-    NSArray *classes = [NSArray arrayWithObjects:
+    NSMutableArray *classes = [[NSArray arrayWithObjects:
         NSClassFromString(@"ITCutWindowEffect"),
         NSClassFromString(@"ITDissolveWindowEffect"),
         NSClassFromString(@"ITSlideHorizontallyWindowEffect"),
@@ -15,10 +17,22 @@
         NSClassFromString(@"ITZoomWindowEffect"),
         NSClassFromString(@"ITSpinWindowEffect"),
         NSClassFromString(@"ITSpinAndZoomWindowEffect"),
-		NSClassFromString(@"ITCoreImageWindowEffect"),
-        nil];
-        
-    return classes;
+        nil] mutableCopy];
+	
+	long version;
+	if ((Gestalt(gestaltSystemVersion, &version) == noErr) && (version >= 4160) && (version < 4166)) {
+		NSOpenGLView *view = [[NSOpenGLView alloc] initWithFrame:NSMakeRect(0, 0, 1, 1) pixelFormat:[NSOpenGLView defaultPixelFormat]];
+		if ([view openGLContext]) {
+			NSString *string = [NSString stringWithCString:glGetString(GL_EXTENSIONS)];
+			NSRange result = [string rangeOfString:@"ARB_fragment_program"];
+			if (result.location != NSNotFound) {
+				[classes addObject:NSClassFromString(@"ITCoreImageWindowEffect")];
+			}
+		}
+		[view release];
+	}
+	
+    return [classes autorelease];
 }
 
 - (id)initWithWindow:(NSWindow *)window