1 /*
2 * Copyright (c) 2004, 2008, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package sun.java2d.opengl;
27
28 import java.awt.BufferCapabilities;
29 import static java.awt.BufferCapabilities.FlipContents.*;
30 import java.awt.Component;
31 import java.awt.GraphicsConfiguration;
32 import java.awt.Transparency;
33 import java.awt.image.ColorModel;
34 import sun.awt.image.SunVolatileImage;
35 import sun.awt.image.VolatileSurfaceManager;
36 import sun.awt.windows.WComponentPeer;
37 import sun.java2d.SurfaceData;
38 import static sun.java2d.opengl.OGLContext.OGLContextCaps.*;
39 import static sun.java2d.pipe.hw.AccelSurface.*;
40 import sun.java2d.pipe.hw.ExtendedBufferCapabilities;
41 import static sun.java2d.pipe.hw.ExtendedBufferCapabilities.VSyncType.*;
42
43 public class WGLVolatileSurfaceManager
44 extends VolatileSurfaceManager
45 {
46 private boolean accelerationEnabled;
47
48 public WGLVolatileSurfaceManager(SunVolatileImage vImg, Object context) {
49 super(vImg, context);
50
51 /*
52 * We will attempt to accelerate this image only under the
53 * following conditions:
54 * - the image is opaque OR
55 * - the image is translucent AND
56 * - the GraphicsConfig supports the FBO extension OR
57 * - the GraphicsConfig has a stored alpha channel
58 */
59 int transparency = vImg.getTransparency();
60 WGLGraphicsConfig gc = (WGLGraphicsConfig)vImg.getGraphicsConfig();
61 accelerationEnabled =
62 (transparency == Transparency.OPAQUE) ||
63 ((transparency == Transparency.TRANSLUCENT) &&
64 (gc.isCapPresent(CAPS_EXT_FBOBJECT) ||
65 gc.isCapPresent(CAPS_STORED_ALPHA)));
66 }
67
68 protected boolean isAccelerationEnabled() {
69 return accelerationEnabled;
70 }
71
72 /**
73 * Create a pbuffer-based SurfaceData object (or init the backbuffer
74 * of an existing window if this is a double buffered GraphicsConfig).
75 */
76 protected SurfaceData initAcceleratedSurface() {
77 SurfaceData sData;
78 Component comp = vImg.getComponent();
79 WComponentPeer peer =
80 (comp != null) ? (WComponentPeer)comp.getPeer() : null;
81
82 try {
83 boolean createVSynced = false;
84 boolean forceback = false;
85 if (context instanceof Boolean) {
86 forceback = ((Boolean)context).booleanValue();
87 if (forceback) {
88 BufferCapabilities caps = peer.getBackBufferCaps();
89 if (caps instanceof ExtendedBufferCapabilities) {
90 ExtendedBufferCapabilities ebc =
91 (ExtendedBufferCapabilities)caps;
92 if (ebc.getVSync() == VSYNC_ON &&
93 ebc.getFlipContents() == COPIED)
94 {
95 createVSynced = true;
96 forceback = false;
97 }
98 }
99 }
100 }
101
102 if (forceback) {
103 // peer must be non-null in this case
104 sData = WGLSurfaceData.createData(peer, vImg, FLIP_BACKBUFFER);
105 } else {
106 WGLGraphicsConfig gc =
107 (WGLGraphicsConfig)vImg.getGraphicsConfig();
108 ColorModel cm = gc.getColorModel(vImg.getTransparency());
109 int type = vImg.getForcedAccelSurfaceType();
110 // if acceleration type is forced (type != UNDEFINED) then
111 // use the forced type, otherwise choose one based on caps
112 if (type == OGLSurfaceData.UNDEFINED) {
113 type = gc.isCapPresent(CAPS_EXT_FBOBJECT) ?
114 OGLSurfaceData.FBOBJECT : OGLSurfaceData.PBUFFER;
115 }
116 if (createVSynced) {
117 sData = WGLSurfaceData.createData(peer, vImg, type);
118 } else {
119 sData = WGLSurfaceData.createData(gc,
120 vImg.getWidth(),
121 vImg.getHeight(),
122 cm, vImg, type);
123 }
124 }
125 } catch (NullPointerException ex) {
126 sData = null;
127 } catch (OutOfMemoryError er) {
128 sData = null;
129 }
130
131 return sData;
132 }
133
134 @Override
135 protected boolean isConfigValid(GraphicsConfiguration gc) {
136 return ((gc == null) ||
137 ((gc instanceof WGLGraphicsConfig) &&
138 (gc == vImg.getGraphicsConfig())));
139 }
140
141 @Override
142 public void initContents() {
143 if (vImg.getForcedAccelSurfaceType() != OGLSurfaceData.TEXTURE) {
144 super.initContents();
145 }
146 }
147 }