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 extends VolatileSurfaceManager {
47
48 private final boolean accelerationEnabled;
49
50 public WGLVolatileSurfaceManager(SunVolatileImage vImg, Object context) {
51 super(vImg, context);
52
53 /*
54 * We will attempt to accelerate this image only under the
55 * following conditions:
56 * - the image is not bitmask AND the GraphicsConfig supports the FBO
57 * extension
58 */
59 int transparency = vImg.getTransparency();
60 WGLGraphicsConfig gc = (WGLGraphicsConfig) vImg.getGraphicsConfig();
61 accelerationEnabled = gc.isCapPresent(CAPS_EXT_FBOBJECT)
62 && transparency != Transparency.BITMASK;
63 }
64
65 protected boolean isAccelerationEnabled() {
66 return accelerationEnabled;
67 }
68
69 /**
70 * Create a FBO-based SurfaceData object (or init the backbuffer
71 * of an existing window if this is a double buffered GraphicsConfig).
72 */
73 protected SurfaceData initAcceleratedSurface() {
74 SurfaceData sData;
75 Component comp = vImg.getComponent();
76 final ComponentAccessor acc = AWTAccessor.getComponentAccessor();
77 WComponentPeer peer = (comp != null) ? acc.getPeer(comp) : null;
78
79 try {
80 boolean createVSynced = false;
81 boolean forceback = false;
82 if (context instanceof Boolean) {
83 forceback = ((Boolean)context).booleanValue();
84 if (forceback) {
85 BufferCapabilities caps = peer.getBackBufferCaps();
86 if (caps instanceof ExtendedBufferCapabilities) {
87 ExtendedBufferCapabilities ebc =
88 (ExtendedBufferCapabilities)caps;
89 if (ebc.getVSync() == VSYNC_ON &&
90 ebc.getFlipContents() == COPIED)
91 {
92 createVSynced = true;
93 forceback = false;
94 }
95 }
96 }
97 }
98
99 if (forceback) {
100 // peer must be non-null in this case
101 sData = WGLSurfaceData.createData(peer, vImg, FLIP_BACKBUFFER);
102 } else {
103 WGLGraphicsConfig gc =
104 (WGLGraphicsConfig)vImg.getGraphicsConfig();
105 ColorModel cm = gc.getColorModel(vImg.getTransparency());
106 int type = vImg.getForcedAccelSurfaceType();
107 // if acceleration type is forced (type != UNDEFINED) then
108 // use the forced type, otherwise choose FBOBJECT
109 if (type == OGLSurfaceData.UNDEFINED) {
110 type = OGLSurfaceData.FBOBJECT;
111 }
112 if (createVSynced) {
113 sData = WGLSurfaceData.createData(peer, vImg, type);
114 } else {
115 sData = WGLSurfaceData.createData(gc,
116 vImg.getWidth(),
117 vImg.getHeight(),
118 cm, vImg, type);
119 }
120 }
121 } catch (NullPointerException ex) {
122 sData = null;
123 } catch (OutOfMemoryError er) {
124 sData = null;
125 }
126
127 return sData;
128 }
129
130 @Override
131 protected boolean isConfigValid(GraphicsConfiguration gc) {
132 return ((gc == null) ||
133 ((gc instanceof WGLGraphicsConfig) &&
134 (gc == vImg.getGraphicsConfig())));
135 }
136
137 @Override
138 public void initContents() {
139 if (vImg.getForcedAccelSurfaceType() != OGLSurfaceData.TEXTURE) {
140 super.initContents();
141 }
142 }
143 }