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This is a backport of OpenJFX 8 to run on Java 7.
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/*
 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.sun.prism.es2;

import java.security.AccessController;
import java.security.PrivilegedAction;

import com.sun.glass.utils.NativeLibLoader;
import com.sun.javafx.PlatformUtil;
import com.sun.prism.impl.PrismSettings;

class GLPixelFormat {
    final private Attributes attributes;
    final private long nativeScreen;
    private long nativePFInfo;
    private static int defaultDepthSize;
    private static int defaultBufferSize;

    static {
        AccessController.doPrivileged(new PrivilegedAction() {

            public Void run() {
               defaultDepthSize = Integer.getInteger("egl.depthSize", 24);
               defaultBufferSize = Integer.getInteger("prism.glBufferSize", 32);
                return null;
            }
        });
    }

    GLPixelFormat(long nativeScreen, Attributes attributes) {
        this.nativeScreen = nativeScreen;
        this.attributes = attributes;
    }

    Attributes getAttributes() {
        return attributes;
    }

    long getNativeScreen() {
        return nativeScreen;
    }

    void setNativePFInfo(long nativePFInfo) {
        this.nativePFInfo = nativePFInfo;
    }

    long getNativePFInfo() {
        return nativePFInfo;
    }

    static class Attributes {
        //  These definitions are used by both the Mac, Win and X11 subclasses
        final static int RED_SIZE      = 0;
        final static int GREEN_SIZE    = 1;
        final static int BLUE_SIZE     = 2;
        final static int ALPHA_SIZE    = 3;
        final static int DEPTH_SIZE    = 4;
        final static int DOUBLEBUFFER  = 5;
        final static int ONSCREEN      = 6;

        final static int NUM_ITEMS     = 7;

        private boolean onScreen;
        private boolean doubleBuffer;
        private int alphaSize;
        private int blueSize;
        private int greenSize;
        private int redSize;
        private int depthSize;

        Attributes() {
            onScreen = true;
            doubleBuffer = true;
            depthSize = defaultDepthSize;
            switch (defaultBufferSize) {
                case 32:
                    redSize = greenSize = blueSize = alphaSize = 8;
                    break;
                case 24:
                    redSize = greenSize = blueSize = 8;
                    alphaSize = 0;
                    break;
                case 16:
                    redSize = blueSize = 5;
                    greenSize = 6;
                    alphaSize = 0;
                    break;
                default:
                    throw new IllegalArgumentException("color buffer size "
                            + defaultBufferSize + " not supported");
            }
        }

        boolean isOnScreen() {
            return onScreen;
        }

        boolean isDoubleBuffer() {
            return doubleBuffer;
        }

        int getDepthSize() {
            return depthSize;
        }

        int getAlphaSize() {
            return alphaSize;
        }

        int getBlueSize() {
            return blueSize;
        }

        int getGreenSize() {
            return greenSize;
        }

        int getRedSize() {
            return redSize;
        }

        void setOnScreen(boolean os) {
            onScreen = os;
        }

        void setDoubleBuffer(boolean db) {
            doubleBuffer = db;
        }

        void setDepthSize(int ds) {
            depthSize = ds;
        }

        void setAlphaSize(int as) {
            alphaSize = as;
        }

        void setBlueSize(int bs) {
            blueSize = bs;
        }

        void setGreenSize(int gs) {
            greenSize = gs;
        }

        void setRedSize(int rs) {
            redSize = rs;
        }

        public String toString() {
            return "onScreen: " + onScreen
                    + "redSize : " + redSize + ", "
                    + "greenSize : " + greenSize + ", "
                    + "blueSize : " + blueSize + ", "
                    + "alphaSize : " + alphaSize + ", "
                    + "depthSize : " + depthSize + ", "
                    + "doubleBuffer : " + doubleBuffer;
        }
    }
}