/* * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * - Redistribution of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistribution in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * Neither the name of Sun Microsystems, Inc. or the names of * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * This software is provided "AS IS," without a warranty of any kind. ALL * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN * MIDROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. * * You acknowledge that this software is not designed or intended for use * in the design, construction, operation or maintenance of any nuclear * facility. * * Sun gratefully acknowledges that this software was originally authored * and developed by Kenneth Bradley Russell and Christopher John Kline. */ package net.java.games.jogl.impl.x11; import java.awt.Component; import java.awt.GraphicsConfiguration; import java.awt.GraphicsDevice; import net.java.games.jogl.*; import net.java.games.jogl.impl.*; public class X11GLContextFactory extends GLContextFactory { static { NativeLibLoader.load(); } private static final int MAX_ATTRIBS = 128; public GraphicsConfiguration chooseGraphicsConfiguration(GLCapabilities capabilities, GLCapabilitiesChooser chooser, GraphicsDevice device) { int screen = X11SunJDKReflection.graphicsDeviceGetScreen(device); // Until we have a rock-solid visual selection algorithm written // in pure Java, we're going to provide the underlying window // system's selection to the chooser as a hint int[] attribs = glCapabilities2AttribList(capabilities, isMultisampleAvailable()); long display = getDisplayConnection(); XVisualInfo recommendedVis = GLX.glXChooseVisual(display, screen, attribs); int recommendedIndex = -1; int[] count = new int[1]; XVisualInfo template = new XVisualInfo(); template.screen(screen); XVisualInfo[] infos = GLX.XGetVisualInfo(display, GLX.VisualScreenMask, template, count); if (infos == null) { throw new GLException("Error while enumerating available XVisualInfos"); } GLCapabilities[] caps = new GLCapabilities[infos.length]; for (int i = 0; i < infos.length; i++) { caps[i] = xvi2GLCapabilities(display, infos[i]); // Attempt to find the visual chosen by glXChooseVisual if (recommendedVis != null && recommendedVis.visualid() == infos[i].visualid()) { recommendedIndex = i; } } int chosen = chooser.chooseCapabilities(capabilities, caps, recommendedIndex); if (chosen < 0 || chosen >= caps.length) { throw new GLException("GLCapabilitiesChooser specified invalid index (expected 0.." + (caps.length - 1) + ")"); } XVisualInfo vis = infos[chosen]; if (vis == null) { throw new GLException("GLCapabilitiesChooser chose an invalid visual"); } // FIXME: need to look at glue code and see type of this field long visualID = vis.visualid(); // FIXME: the storage for the infos array, as well as that for the // recommended visual, is leaked; should free them here with XFree() // Now figure out which GraphicsConfiguration corresponds to this // visual by matching the visual ID GraphicsConfiguration[] configs = device.getConfigurations(); for (int i = 0; i < configs.length; i++) { GraphicsConfiguration config = configs[i]; if (config != null) { if (X11SunJDKReflection.graphicsConfigurationGetVisualID(config) == visualID) { return config; } } } // Either we weren't able to reflectively introspect on the // X11GraphicsConfig or something went wrong in the steps above; // we're going to return null without signaling an error condition // in this case (although we should distinguish between the two // and possibly report more of an error in the latter case) return null; } public GLContext createGLContext(Component component, GLCapabilities capabilities, GLCapabilitiesChooser chooser, GLContext shareWith) { if (component != null) { return new X11OnscreenGLContext(component, capabilities, chooser, shareWith); } else { return new X11OffscreenGLContext(capabilities, chooser, shareWith); } } public static GLCapabilities xvi2GLCapabilities(long display, XVisualInfo info) { int[] tmp = new int[1]; int val = glXGetConfig(display, info, GLX.GLX_USE_GL, tmp); if (val == 0) { // Visual does not support OpenGL return null; } val = glXGetConfig(display, info, GLX.GLX_RGBA, tmp); if (val == 0) { // Visual does not support RGBA return null; } GLCapabilities res = new GLCapabilities(); res.setDoubleBuffered(glXGetConfig(display, info, GLX.GLX_DOUBLEBUFFER, tmp) != 0); res.setStereo (glXGetConfig(display, info, GLX.GLX_STEREO, tmp) != 0); // Note: use of hardware acceleration is determined by // glXCreateContext, not by the XVisualInfo. Optimistically claim // that all GLCapabilities have the capability to be hardware // accelerated. res.setHardwareAccelerated(true); res.setDepthBits (glXGetConfig(display, info, GLX.GLX_DEPTH_SIZE, tmp)); res.setStencilBits (glXGetConfig(display, info, GLX.GLX_STENCIL_SIZE, tmp)); res.setRedBits (glXGetConfig(display, info, GLX.GLX_RED_SIZE, tmp)); res.setGreenBits (glXGetConfig(display, info, GLX.GLX_GREEN_SIZE, tmp)); res.setBlueBits (glXGetConfig(display, info, GLX.GLX_BLUE_SIZE, tmp)); res.setAlphaBits (glXGetConfig(display, info, GLX.GLX_ALPHA_SIZE, tmp)); res.setAccumRedBits (glXGetConfig(display, info, GLX.GLX_ACCUM_RED_SIZE, tmp)); res.setAccumGreenBits(glXGetConfig(display, info, GLX.GLX_ACCUM_GREEN_SIZE, tmp)); res.setAccumBlueBits (glXGetConfig(display, info, GLX.GLX_ACCUM_BLUE_SIZE, tmp)); res.setAccumAlphaBits(glXGetConfig(display, info, GLX.GLX_ACCUM_ALPHA_SIZE, tmp)); if (isMultisampleAvailable()) { res.setSampleBuffers(glXGetConfig(display, info, GLX.GLX_SAMPLE_BUFFERS_ARB, tmp) != 0); res.setNumSamples (glXGetConfig(display, info, GLX.GLX_SAMPLES_ARB, tmp)); } return res; } public static int[] glCapabilities2AttribList(GLCapabilities caps, boolean isMultisampleAvailable) { int colorDepth = (caps.getRedBits() + caps.getGreenBits() + caps.getBlueBits()); if (colorDepth < 15) { throw new GLException("Bit depths < 15 (i.e., non-true-color) not supported"); } int[] res = new int[MAX_ATTRIBS]; int idx = 0; res[idx++] = GLX.GLX_RGBA; if (caps.getDoubleBuffered()) { res[idx++] = GLX.GLX_DOUBLEBUFFER; } if (caps.getStereo()) { res[idx++] = GLX.GLX_STEREO; } res[idx++] = GLX.GLX_RED_SIZE; res[idx++] = caps.getRedBits(); res[idx++] = GLX.GLX_GREEN_SIZE; res[idx++] = caps.getGreenBits(); res[idx++] = GLX.GLX_BLUE_SIZE; res[idx++] = caps.getBlueBits(); res[idx++] = GLX.GLX_ALPHA_SIZE; res[idx++] = caps.getAlphaBits(); res[idx++] = GLX.GLX_DEPTH_SIZE; res[idx++] = caps.getDepthBits(); res[idx++] = GLX.GLX_STENCIL_SIZE; res[idx++] = caps.getStencilBits(); res[idx++] = GLX.GLX_ACCUM_RED_SIZE; res[idx++] = caps.getAccumRedBits(); res[idx++] = GLX.GLX_ACCUM_GREEN_SIZE; res[idx++] = caps.getAccumGreenBits(); res[idx++] = GLX.GLX_ACCUM_BLUE_SIZE; res[idx++] = caps.getAccumBlueBits(); if (isMultisampleAvailable && caps.getSampleBuffers()) { res[idx++] = GL.GLX_SAMPLE_BUFFERS_ARB; res[idx++] = GL.GL_TRUE; res[idx++] = GL.GLX_SAMPLES_ARB; res[idx++] = caps.getNumSamples(); } res[idx++] = 0; return res; } // Display connection for use by visual selection algorithm and by all offscreen surfaces private static long staticDisplay; public static long getDisplayConnection() { if (staticDisplay == 0) { staticDisplay = GLX.XOpenDisplay(null); if (staticDisplay == 0) { throw new GLException("Unable to open default display, needed for visual selection and offscreen surface handling"); } } return staticDisplay; } private static boolean checkedMultisample; private static boolean multisampleAvailable; public static boolean isMultisampleAvailable() { if (!checkedMultisample) { long display = getDisplayConnection(); String exts = GLX.glXGetClientString(display, GLX.GLX_EXTENSIONS); if (exts != null) { multisampleAvailable = (exts.indexOf("GLX_ARB_multisample") >= 0); } checkedMultisample = true; } return multisampleAvailable; } private static String glXGetConfigErrorCode(int err) { switch (err) { case GLX.GLX_NO_EXTENSION: return "GLX_NO_EXTENSION"; case GLX.GLX_BAD_SCREEN: return "GLX_BAD_SCREEN"; case GLX.GLX_BAD_ATTRIBUTE: return "GLX_BAD_ATTRIBUTE"; case GLX.GLX_BAD_VISUAL: return "GLX_BAD_VISUAL"; default: return "Unknown error code " + err; } } public static int glXGetConfig(long display, XVisualInfo info, int attrib, int[] tmp) { if (display == 0) { throw new GLException("No display connection"); } int res = GLX.glXGetConfig(display, info, attrib, tmp); if (res != 0) { throw new GLException("glXGetConfig failed: error code " + glXGetConfigErrorCode(res)); } return tmp[0]; } }