Java tutorial
//package com.java2s; /* Copyright_License { XCSoar Glide Computer - http://www.xcsoar.org/ Copyright (C) 2000-2016 The XCSoar Project A detailed list of copyright holders can be found in the file "AUTHORS". This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. } */ import javax.microedition.khronos.egl.EGL10; import javax.microedition.khronos.egl.EGLConfig; import javax.microedition.khronos.egl.EGLDisplay; public class Main { static int configDistance(EGL10 egl, EGLDisplay display, EGLConfig config, int want_r, int want_g, int want_b, int want_a, int want_depth, int want_stencil) { int r = getConfigAttrib(egl, display, config, EGL10.EGL_RED_SIZE, 0); int g = getConfigAttrib(egl, display, config, EGL10.EGL_GREEN_SIZE, 0); int b = getConfigAttrib(egl, display, config, EGL10.EGL_BLUE_SIZE, 0); int a = getConfigAttrib(egl, display, config, EGL10.EGL_ALPHA_SIZE, 0); int d = getConfigAttrib(egl, display, config, EGL10.EGL_DEPTH_SIZE, 0); int s = getConfigAttrib(egl, display, config, EGL10.EGL_STENCIL_SIZE, 0); return Math.abs(r - want_r) + Math.abs(g - want_g) + Math.abs(b - want_b) + Math.abs(a - want_a) + Math.abs(d - want_depth) + Math.abs(s - want_stencil); } /** * Wrapper for EGL10.eglGetConfigAttrib() with a fallback value just * in case the function fails. */ static int getConfigAttrib(EGL10 egl, EGLDisplay display, EGLConfig config, int attribute, int defaultValue) { int[] mValue = new int[1]; return egl.eglGetConfigAttrib(display, config, attribute, mValue) ? mValue[0] : defaultValue; } }