1 /*
2 * Copyright (c) 2004, 2015, 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
35 import sun.awt.AWTAccessor;
36 import sun.awt.AWTAccessor.ComponentAccessor;
37 import sun.awt.image.SunVolatileImage;
38 import sun.awt.image.VolatileSurfaceManager;
39 import sun.awt.windows.WComponentPeer;
40 import sun.java2d.SurfaceData;
41 import static sun.java2d.opengl.OGLContext.OGLContextCaps.*;
42 import static sun.java2d.pipe.hw.AccelSurface.*;
43 import sun.java2d.pipe.hw.ExtendedBufferCapabilities;
44 import static sun.java2d.pipe.hw.ExtendedBufferCapabilities.VSyncType.*;
45
46 public class WGLVolatileSurfaceManager
47 extends VolatileSurfaceManager
48 {
49 private boolean accelerationEnabled;
50
51 public WGLVolatileSurfaceManager(SunVolatileImage vImg, Object context) {
52 super(vImg, context);
53
54 /*
55 * We will attempt to accelerate this image only under the
56 * following conditions:
57 * - the image is opaque OR
58 * - the image is translucent AND
59 * - the GraphicsConfig supports the FBO extension OR
60 * - the GraphicsConfig has a stored alpha channel
61 */
62 int transparency = vImg.getTransparency();
63 WGLGraphicsConfig gc = (WGLGraphicsConfig)vImg.getGraphicsConfig();
64 accelerationEnabled =
65 (transparency == Transparency.OPAQUE) ||
66 ((transparency == Transparency.TRANSLUCENT) &&
67 (gc.isCapPresent(CAPS_EXT_FBOBJECT) ||
68 gc.isCapPresent(CAPS_STORED_ALPHA)));
69 }
70
71 protected boolean isAccelerationEnabled() {
72 return accelerationEnabled;
73 }
74
75 /**
76 * Create a pbuffer-based SurfaceData object (or init the backbuffer
77 * of an existing window if this is a double buffered GraphicsConfig).
78 */
79 protected SurfaceData initAcceleratedSurface() {
80 SurfaceData sData;
81 Component comp = vImg.getComponent();
82 final ComponentAccessor acc = AWTAccessor.getComponentAccessor();
83 WComponentPeer peer = (comp != null) ? acc.getPeer(comp) : null;
84
85 try {
86 boolean createVSynced = false;
87 boolean forceback = false;
88 if (context instanceof Boolean) {
89 forceback = ((Boolean)context).booleanValue();
90 if (forceback) {
91 BufferCapabilities caps = peer.getBackBufferCaps();
92 if (caps instanceof ExtendedBufferCapabilities) {
93 ExtendedBufferCapabilities ebc =
94 (ExtendedBufferCapabilities)caps;
95 if (ebc.getVSync() == VSYNC_ON &&
96 ebc.getFlipContents() == COPIED)
97 {
98 createVSynced = true;
99 forceback = false;
100 }
101 }
102 }
103 }
104
105 if (forceback) {
106 // peer must be non-null in this case
107 sData = WGLSurfaceData.createData(peer, vImg, FLIP_BACKBUFFER);
108 } else {
109 WGLGraphicsConfig gc =
110 (WGLGraphicsConfig)vImg.getGraphicsConfig();
111 ColorModel cm = gc.getColorModel(vImg.getTransparency());
112 int type = vImg.getForcedAccelSurfaceType();
113 // if acceleration type is forced (type != UNDEFINED) then
114 // use the forced type, otherwise choose one based on caps
115 if (type == OGLSurfaceData.UNDEFINED) {
116 type = gc.isCapPresent(CAPS_EXT_FBOBJECT) ?
117 OGLSurfaceData.FBOBJECT : OGLSurfaceData.PBUFFER;
118 }
119 if (createVSynced) {
120 sData = WGLSurfaceData.createData(peer, vImg, type);
121 } else {
122 sData = WGLSurfaceData.createData(gc,
123 vImg.getWidth(),
124 vImg.getHeight(),
125 cm, vImg, type);
126 }
127 }
128 } catch (NullPointerException ex) {
129 sData = null;
130 } catch (OutOfMemoryError er) {
131 sData = null;
132 }
133
134 return sData;
135 }
136
137 @Override
138 protected boolean isConfigValid(GraphicsConfiguration gc) {
139 return ((gc == null) ||
140 ((gc instanceof WGLGraphicsConfig) &&
141 (gc == vImg.getGraphicsConfig())));
142 }
143
144 @Override
145 public void initContents() {
146 if (vImg.getForcedAccelSurfaceType() != OGLSurfaceData.TEXTURE) {
147 super.initContents();
148 }
149 }
150 }