From 0d259140293aab208d45bab4eda33eb60d8e9263 Mon Sep 17 00:00:00 2001
From: kappaOne <one.kappa@googlemail.com>
Date: Thu, 31 Jan 2013 22:44:43 +0000
Subject: [PATCH] Fix colors on OS X native cursors

---
 src/java/org/lwjgl/input/Cursor.java | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/src/java/org/lwjgl/input/Cursor.java b/src/java/org/lwjgl/input/Cursor.java
index c38c10f3..7f257f63 100644
--- a/src/java/org/lwjgl/input/Cursor.java
+++ b/src/java/org/lwjgl/input/Cursor.java
@@ -173,6 +173,10 @@ public class Cursor {
 		CursorElement[] cursors;
 		switch (LWJGLUtil.getPlatform()) {
 			case LWJGLUtil.PLATFORM_MACOSX:
+				
+				// OS X requires the image format to be in ABGR format
+				convertARGBtoABGR(images_copy);
+				
 				// create our cursor elements
 				cursors = new CursorElement[numImages];
 				for(int i=0; i<numImages; i++) {
@@ -220,6 +224,26 @@ public class Cursor {
 		}
 		return cursors;
 	}
+	
+	/**
+	 * Convert an IntBuffer image of ARGB format into ABGR
+	 *
+	 * @param imageBuffer image to convert
+	 */
+	private static void convertARGBtoABGR(IntBuffer imageBuffer) {
+		for (int i = 0; i < imageBuffer.limit(); i++) {
+			int argbColor = imageBuffer.get(i);
+			
+			byte alpha = (byte)(argbColor >>> 24);
+	        byte blue = (byte)(argbColor >>> 16);
+	        byte green = (byte)(argbColor >>> 8);
+	        byte red = (byte)argbColor;
+	        
+	        int abgrColor = ((alpha & 0xff) << 24 ) + ((red & 0xff) << 16 ) + ((green & 0xff) << 8 ) + ((blue & 0xff) ); 
+	        
+	        imageBuffer.put(i, abgrColor);
+		}
+	}
 
 	/**
 	 * Flips the images so they're oriented according to opengl