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| 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 sun.java2d.pipe.BufferedContext; | |
| 29 | +import sun.java2d.pipe.RenderBuffer; | |
| 30 | +import sun.java2d.pipe.RenderQueue; | |
| 31 | +import sun.java2d.pipe.hw.ContextCapabilities; | |
| 32 | +import static sun.java2d.pipe.BufferedOpCodes.*; | |
| 33 | +import static sun.java2d.pipe.hw.ContextCapabilities.*; | |
| 34 | + | |
| 35 | +/** | |
| 36 | + * Note that the RenderQueue lock must be acquired before calling any of | |
| 37 | + * the methods in this class. | |
| 38 | + */ | |
| 39 | +public class OGLContext extends BufferedContext { | |
| 40 | + | |
| 41 | + private final OGLGraphicsConfig config; | |
| 42 | + | |
| 43 | + OGLContext(RenderQueue rq, OGLGraphicsConfig config) { | |
| 44 | + super(rq); | |
| 45 | + this.config = config; | |
| 46 | + } | |
| 47 | + | |
| 48 | + /** | |
| 49 | + * Convenience method that delegates to setScratchSurface() below. | |
| 50 | + */ | |
| 51 | + static void setScratchSurface(OGLGraphicsConfig gc) { | |
| 52 | + setScratchSurface(gc.getNativeConfigInfo()); | |
| 53 | + } | |
| 54 | + | |
| 55 | + /** | |
| 56 | + * Makes the given GraphicsConfig's context current to its associated | |
| 57 | + * "scratch surface". Each GraphicsConfig maintains a native context | |
| 58 | + * (GLXContext on Unix, HGLRC on Windows) as well as a native pbuffer | |
| 59 | + * known as the "scratch surface". By making the context current to the | |
| 60 | + * scratch surface, we are assured that we have a current context for | |
| 61 | + * the relevant GraphicsConfig, and can therefore perform operations | |
| 62 | + * depending on the capabilities of that GraphicsConfig. For example, | |
| 63 | + * if the GraphicsConfig supports the GL_ARB_texture_non_power_of_two | |
| 64 | + * extension, then we should be able to make a non-pow2 texture for this | |
| 65 | + * GraphicsConfig once we make the context current to the scratch surface. | |
| 66 | + * | |
| 67 | + * This method should be used for operations with an OpenGL texture | |
| 68 | + * as the destination surface (e.g. a sw->texture blit loop), or in those | |
| 69 | + * situations where we may not otherwise have a current context (e.g. | |
| 70 | + * when disposing a texture-based surface). | |
| 71 | + */ | |
| 72 | + static void setScratchSurface(long pConfigInfo) { | |
| 73 | + // assert OGLRenderQueue.getInstance().lock.isHeldByCurrentThread(); | |
| 74 | + | |
| 75 | + // invalidate the current context | |
| 76 | + currentContext = null; | |
| 77 | + | |
| 78 | + // set the scratch context | |
| 79 | + OGLRenderQueue rq = OGLRenderQueue.getInstance(); | |
| 80 | + RenderBuffer buf = rq.getBuffer(); | |
| 81 | + rq.ensureCapacityAndAlignment(12, 4); | |
| 82 | + buf.putInt(SET_SCRATCH_SURFACE); | |
| 83 | + buf.putLong(pConfigInfo); | |
| 84 | + } | |
| 85 | + | |
| 86 | + /** | |
| 87 | + * Invalidates the currentContext field to ensure that we properly | |
| 88 | + * revalidate the OGLContext (make it current, etc.) next time through | |
| 89 | + * the validate() method. This is typically invoked from methods | |
| 90 | + * that affect the current context state (e.g. disposing a context or | |
| 91 | + * surface). | |
| 92 | + */ | |
| 93 | + static void invalidateCurrentContext() { | |
| 94 | + // assert OGLRenderQueue.getInstance().lock.isHeldByCurrentThread(); | |
| 95 | + | |
| 96 | + // invalidate the current Java-level context so that we | |
| 97 | + // revalidate everything the next time around | |
| 98 | + if (currentContext != null) { | |
| 99 | + currentContext.invalidateContext(); | |
| 100 | + currentContext = null; | |
| 101 | + } | |
| 102 | + | |
| 103 | + // invalidate the context reference at the native level, and | |
| 104 | + // then flush the queue so that we have no pending operations | |
| 105 | + // dependent on the current context | |
| 106 | + OGLRenderQueue rq = OGLRenderQueue.getInstance(); | |
| 107 | + rq.ensureCapacity(4); | |
| 108 | + rq.getBuffer().putInt(INVALIDATE_CONTEXT); | |
| 109 | + rq.flushNow(); | |
| 110 | + } | |
| 111 | + | |
| 112 | + public RenderQueue getRenderQueue() { | |
| 113 | + return OGLRenderQueue.getInstance(); | |
| 114 | + } | |
| 115 | + | |
| 116 | + /** | |
| 117 | + * Returns a string representing adapter id (vendor, renderer, version). | |
| 118 | + * Must be called on the rendering thread. | |
| 119 | + * | |
| 120 | + * @return an id string for the adapter | |
| 121 | + */ | |
| 122 | + static final native String getOGLIdString(); | |
| 123 | + | |
| 124 | + @Override | |
| 125 | + public void saveState() { | |
| 126 | + // assert rq.lock.isHeldByCurrentThread(); | |
| 127 | + | |
| 128 | + // reset all attributes of this and current contexts | |
| 129 | + invalidateContext(); | |
| 130 | + invalidateCurrentContext(); | |
| 131 | + | |
| 132 | + setScratchSurface(config); | |
| 133 | + | |
| 134 | + // save the state on the native level | |
| 135 | + rq.ensureCapacity(4); | |
| 136 | + buf.putInt(SAVE_STATE); | |
| 137 | + rq.flushNow(); | |
| 138 | + } | |
| 139 | + | |
| 140 | + @Override | |
| 141 | + public void restoreState() { | |
| 142 | + // assert rq.lock.isHeldByCurrentThread(); | |
| 143 | + | |
| 144 | + // reset all attributes of this and current contexts | |
| 145 | + invalidateContext(); | |
| 146 | + invalidateCurrentContext(); | |
| 147 | + | |
| 148 | + setScratchSurface(config); | |
| 149 | + | |
| 150 | + // restore the state on the native level | |
| 151 | + rq.ensureCapacity(4); | |
| 152 | + buf.putInt(RESTORE_STATE); | |
| 153 | + rq.flushNow(); | |
| 154 | + } | |
| 155 | + | |
| 156 | + static class OGLContextCaps extends ContextCapabilities { | |
| 157 | + /** | |
| 158 | + * Indicates the presence of the GL_EXT_framebuffer_object extension. | |
| 159 | + * This cap will only be set if the fbobject system property has been | |
| 160 | + * enabled and we are able to create an FBO with depth buffer. | |
| 161 | + */ | |
| 162 | + static final int CAPS_EXT_FBOBJECT = | |
| 163 | + (CAPS_RT_TEXTURE_ALPHA | CAPS_RT_TEXTURE_OPAQUE); | |
| 164 | + /** Indicates that the context supports a stored alpha channel. */ | |
| 165 | + static final int CAPS_STORED_ALPHA = CAPS_RT_PLAIN_ALPHA; | |
| 166 | + /** Indicates that the context is doublebuffered. */ | |
| 167 | + static final int CAPS_DOUBLEBUFFERED = (FIRST_PRIVATE_CAP << 0); | |
| 168 | + /** | |
| 169 | + * Indicates the presence of the GL_ARB_fragment_shader extension. | |
| 170 | + * This cap will only be set if the lcdshader system property has been | |
| 171 | + * enabled and the hardware supports the minimum number of texture units | |
| 172 | + */ | |
| 173 | + static final int CAPS_EXT_LCD_SHADER = (FIRST_PRIVATE_CAP << 1); | |
| 174 | + /** | |
| 175 | + * Indicates the presence of the GL_ARB_fragment_shader extension. | |
| 176 | + * This cap will only be set if the biopshader system property has been | |
| 177 | + * enabled and the hardware meets our minimum requirements. | |
| 178 | + */ | |
| 179 | + static final int CAPS_EXT_BIOP_SHADER = (FIRST_PRIVATE_CAP << 2); | |
| 180 | + /** | |
| 181 | + * Indicates the presence of the GL_ARB_fragment_shader extension. | |
| 182 | + * This cap will only be set if the gradshader system property has been | |
| 183 | + * enabled and the hardware meets our minimum requirements. | |
| 184 | + */ | |
| 185 | + static final int CAPS_EXT_GRAD_SHADER = (FIRST_PRIVATE_CAP << 3); | |
| 186 | + /** Indicates the presence of the GL_ARB_texture_rectangle extension. */ | |
| 187 | + static final int CAPS_EXT_TEXRECT = (FIRST_PRIVATE_CAP << 4); | |
| 188 | + | |
| 189 | + OGLContextCaps(int caps, String adapterId) { | |
| 190 | + super(caps, adapterId); | |
| 191 | + } | |
| 192 | + | |
| 193 | + @Override | |
| 194 | + public String toString() { | |
| 195 | + StringBuffer buf = new StringBuffer(super.toString()); | |
| 196 | + if ((caps & CAPS_EXT_FBOBJECT) != 0) { | |
| 197 | + buf.append("CAPS_EXT_FBOBJECT|"); | |
| 198 | + } | |
| 199 | + if ((caps & CAPS_STORED_ALPHA) != 0) { | |
| 200 | + buf.append("CAPS_STORED_ALPHA|"); | |
| 201 | + } | |
| 202 | + if ((caps & CAPS_DOUBLEBUFFERED) != 0) { | |
| 203 | + buf.append("CAPS_DOUBLEBUFFERED|"); | |
| 204 | + } | |
| 205 | + if ((caps & CAPS_EXT_LCD_SHADER) != 0) { | |
| 206 | + buf.append("CAPS_EXT_LCD_SHADER|"); | |
| 207 | + } | |
| 208 | + if ((caps & CAPS_EXT_BIOP_SHADER) != 0) { | |
| 209 | + buf.append("CAPS_BIOP_SHADER|"); | |
| 210 | + } | |
| 211 | + if ((caps & CAPS_EXT_GRAD_SHADER) != 0) { | |
| 212 | + buf.append("CAPS_EXT_GRAD_SHADER|"); | |
| 213 | + } | |
| 214 | + if ((caps & CAPS_EXT_TEXRECT) != 0) { | |
| 215 | + buf.append("CAPS_EXT_TEXRECT|"); | |
| 216 | + } | |
| 217 | + return buf.toString(); | |
| 218 | + } | |
| 219 | + } | |
| 220 | +} | |