1 /* 2 * Copyright (c) 2014, 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 com.sun.glass.ui.monocle; 27 28 import com.sun.glass.ui.monocle.linux.LinuxSystem; 29 30 public class AcceleratedScreen { 31 32 private static long glesLibraryHandle; 33 private static long eglLibraryHandle; 34 protected static boolean initialized = false; 35 long eglSurface, eglContext, eglDisplay; 36 37 protected long platformGetNativeDisplay() { 38 return 0L; 39 } 40 41 protected long platformGetNativeWindow() { 42 return 0L; 43 } 44 45 public AcceleratedScreen(int[] attributes) { 46 initPlatformLibraries(); 47 48 int major[] = {0}, minor[]={0}; 49 eglDisplay = 50 EGL.eglGetDisplay(platformGetNativeDisplay()); 51 EGL.eglInitialize(eglDisplay, major, minor); 52 EGL.eglBindAPI(EGL.EGL_OPENGL_ES_BIT); 53 54 long eglConfigs[] = {0}; 55 int configCount[] = {0}; 56 57 EGL.eglChooseConfig(eglDisplay, attributes, eglConfigs, 1, configCount); 58 eglSurface = 59 EGL.eglCreateWindowSurface(eglDisplay, eglConfigs[0], 60 platformGetNativeWindow(), null); 61 62 int emptyAttrArray [] = {}; 63 eglContext = EGL.eglCreateContext(eglDisplay, eglConfigs[0], 64 0, emptyAttrArray); 65 } 66 67 public void enableRendering(boolean flag) { 68 if (flag) { 69 EGL.eglMakeCurrent(eglDisplay, eglSurface, eglSurface, eglContext); 70 } else { 71 EGL.eglMakeCurrent(eglDisplay, 0, 0, eglContext); 72 } 73 } 74 75 protected boolean initPlatformLibraries() { 76 if (!initialized) { 77 LinuxSystem ls = LinuxSystem.getLinuxSystem(); 78 glesLibraryHandle = ls.dlopen("libGLESv2.so", 79 LinuxSystem.RTLD_LAZY | LinuxSystem.RTLD_GLOBAL); 80 eglLibraryHandle = ls.dlopen("libEGL.so", 81 LinuxSystem.RTLD_LAZY | LinuxSystem.RTLD_GLOBAL); 82 initialized = true; 83 } 84 return true; 85 } 86 87 public long getGLHandle() { 88 return glesLibraryHandle; 89 } 90 91 public long getEGLHandle() { return eglLibraryHandle; } 92 93 public boolean swapBuffers() { 94 EGL.eglSwapBuffers(eglDisplay, eglSurface); 95 return true; 96 } 97 98 }