From b3b5e95bf4655bf78e0f2970bd427d44272a5fc2 Mon Sep 17 00:00:00 2001
From: kappaOne <one.kappa@googlemail.com>
Date: Fri, 30 Nov 2012 23:24:12 +0000
Subject: [PATCH] Use a fixed back buffer for proper resolution in fullscreen
 mode

---
 src/native/macosx/org_lwjgl_opengl_Display.m | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/native/macosx/org_lwjgl_opengl_Display.m b/src/native/macosx/org_lwjgl_opengl_Display.m
index 397c99b3..045b57ec 100644
--- a/src/native/macosx/org_lwjgl_opengl_Display.m
+++ b/src/native/macosx/org_lwjgl_opengl_Display.m
@@ -457,8 +457,18 @@ JNIEXPORT jobject JNICALL Java_org_lwjgl_opengl_MacOSXDisplay_nCreateWindow(JNIE
 		
 		[window_info->window setContentView:window_info->view];
 		
+		// disable any fixed backbuffer size to allow resizing
+		CGLContextObj cgcontext = (CGLContextObj)[[window_info->view openGLContext] CGLContextObj];
+		CGLDisable(cgcontext, kCGLCESurfaceBackingSize);
 	}
 	else {
+		// set a fixed backbuffer size for fullscreen
+		CGLContextObj cgcontext = (CGLContextObj)[[window_info->view openGLContext] CGLContextObj];
+		GLint dim[2] = {width, height};
+		CGLSetParameter(cgcontext, kCGLCPSurfaceBackingSize, dim);
+        CGLEnable(cgcontext, kCGLCESurfaceBackingSize);
+		
+		// enter fullscreen mode
 		[window_info->view enterFullScreenMode: [NSScreen mainScreen] withOptions: nil ];
 		window_info->window = [window_info->view window];