diff options
Diffstat (limited to 'src/jogl/classes/com/sun/opengl/impl/ExtensionAvailabilityCache.java')
| -rw-r--r-- | src/jogl/classes/com/sun/opengl/impl/ExtensionAvailabilityCache.java | 390 |
1 files changed, 0 insertions, 390 deletions
diff --git a/src/jogl/classes/com/sun/opengl/impl/ExtensionAvailabilityCache.java b/src/jogl/classes/com/sun/opengl/impl/ExtensionAvailabilityCache.java deleted file mode 100644 index 26072519e..000000000 --- a/src/jogl/classes/com/sun/opengl/impl/ExtensionAvailabilityCache.java +++ /dev/null @@ -1,390 +0,0 @@ -/* - * 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 - * MICROSYSTEMS, 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 com.sun.opengl.impl; - -import javax.media.opengl.*; -import java.util.*; -// FIXME: refactor Java SE dependencies -//import java.util.regex.*; -import java.lang.reflect.*; - -/** - * A utility object intended to be used by implementations to act as a cache - * of which OpenGL extensions are currently available on both the host machine - * and display. - */ -public final class ExtensionAvailabilityCache { - private static final boolean DEBUG = Debug.debug("ExtensionAvailabilityCache"); - private static final boolean DEBUG_AVAILABILITY = Debug.isPropertyDefined("ExtensionAvailabilityCache", true); - - ExtensionAvailabilityCache(GLContextImpl context) - { - this.context = context; - } - - /** - * Flush the cache. The cache will be rebuilt lazily as calls to {@link - * #isExtensionAvailable(String)} are received. - */ - public void flush() - { - if(DEBUG) { - System.out.println("ExtensionAvailabilityCache: Flush availability OpenGL "+majorVersion+"."+minorVersion); - } - availableExtensionCache.clear(); - initialized = false; - majorVersion = 1; - minorVersion = 0; - } - - /** - * Flush the cache and rebuild the cache. - */ - public void reset() { - flush(); - initAvailableExtensions(); - } - - public boolean isInitialized() { - return initialized && !availableExtensionCache.isEmpty() ; - } - - public boolean isExtensionAvailable(String glExtensionName) { - initAvailableExtensions(); - return availableExtensionCache.contains(mapGLExtensionName(glExtensionName)); - } - - public String getPlatformExtensionsString() { - initAvailableExtensions(); - return glXExtensions; - } - - public String getGLExtensions() { - initAvailableExtensions(); - if(DEBUG) { - System.err.println("ExtensionAvailabilityCache: getGLExtensions() called"); - } - return glExtensions; - } - - public int getMajorVersion() { - initAvailableExtensions(); - return majorVersion; - } - - public int getMinorVersion() { - initAvailableExtensions(); - return minorVersion; - } - - private void initAvailableExtensions() { - // if hash is empty (meaning it was flushed), pre-cache it with the list - // of extensions that are in the GL_EXTENSIONS string - if (availableExtensionCache.isEmpty() || !initialized) { - GL gl = context.getGL(); - - if (DEBUG) { - System.err.println("ExtensionAvailabilityCache: Pre-caching init "+gl+", GL_VERSION "+gl.glGetString(GL.GL_VERSION)); - } - - // Set version - Version version = new Version(gl.glGetString(GL.GL_VERSION)); - if (version.isValid()) { - majorVersion = version.getMajor(); - minorVersion = version.getMinor(); - - if( !gl.isGL3() && - ( majorVersion > 3 || - ( majorVersion == 3 && minorVersion >= 1 ) ) ) { - // downsize version to 3.0 in case we are not using GL3 (3.1) - majorVersion = 3; - minorVersion = 0; - } - } - - boolean useGetStringi = false; - - if ( majorVersion > 3 || - ( majorVersion == 3 && minorVersion >= 0 ) || - gl.isGL3() ) { - if ( ! gl.isGL2GL3() ) { - if(DEBUG) { - System.err.println("ExtensionAvailabilityCache: GL >= 3.1 usage, but no GL2GL3 interface: "+gl.getClass().getName()); - } - } else if ( ! gl.isFunctionAvailable("glGetStringi") ) { - if(DEBUG) { - System.err.println("ExtensionAvailabilityCache: GL >= 3.1 usage, but no glGetStringi"); - } - } else { - useGetStringi = true; - } - } - - if (DEBUG) { - System.err.println("ExtensionAvailabilityCache: Pre-caching extension availability OpenGL "+majorVersion+"."+minorVersion+ - ", use "+ ( useGetStringi ? "glGetStringi" : "glGetString" ) ); - } - - StringBuffer sb = new StringBuffer(); - if(useGetStringi) { - GL2GL3 gl2gl3 = gl.getGL2GL3(); - int[] numExtensions = { 0 } ; - gl2gl3.glGetIntegerv(gl2gl3.GL_NUM_EXTENSIONS, numExtensions, 0); - for (int i = 0; i < numExtensions[0]; i++) { - sb.append(gl2gl3.glGetStringi(gl2gl3.GL_EXTENSIONS, i)); - if(i < numExtensions[0]) { - sb.append(" "); - } - } - } else { - sb.append(gl.glGetString(GL.GL_EXTENSIONS)); - } - glExtensions = sb.toString(); - glXExtensions = context.getPlatformExtensionsString(); - - sb.append(" "); - sb.append(glXExtensions); - - String allAvailableExtensions = sb.toString(); - if (DEBUG_AVAILABILITY) { - System.err.println("ExtensionAvailabilityCache: Available extensions: " + allAvailableExtensions); - System.err.println("ExtensionAvailabilityCache: GL vendor: " + gl.glGetString(GL.GL_VENDOR)); - } - StringTokenizer tok = new StringTokenizer(allAvailableExtensions); - while (tok.hasMoreTokens()) { - String availableExt = tok.nextToken().trim(); - availableExt = availableExt.intern(); - availableExtensionCache.add(availableExt); - if (DEBUG_AVAILABILITY) { - System.err.println("ExtensionAvailabilityCache: Available: " + availableExt); - } - } - - // Put GL version strings in the table as well - // FIXME: this needs to be adjusted when the major rev changes - // beyond the known ones - int major = majorVersion; - int minor = minorVersion; - while (major > 0) { - while (minor >= 0) { - availableExtensionCache.add("GL_VERSION_" + major + "_" + minor); - if (DEBUG) { - System.err.println("ExtensionAvailabilityCache: Added GL_VERSION_" + major + "_" + minor + " to known extensions"); - } - --minor; - } - - switch (major) { - case 3: - if(gl.isGL3()) { - // GL3 is a GL 3.1 forward compatible context, - // hence no 2.0, 1.0 - 1.5 GL versions are supported. - major=0; - } - // Restart loop at version 2.1 - minor = 1; - break; - case 2: - // Restart loop at version 1.5 - minor = 5; - break; - case 1: - break; - } - - --major; - } - - // put a dummy var in here so that the cache is no longer empty even if - // no extensions are in the GL_EXTENSIONS string - availableExtensionCache.add("<INTERNAL_DUMMY_PLACEHOLDER>"); - - initialized = true; - } - } - - // FIXME: hack to re-enable GL_NV_vertex_array_range extension after - // recent upgrade to new wglext.h and glxext.h headers - private static String mapGLExtensionName(String extensionName) { - if (extensionName != null && - (extensionName.equals("WGL_NV_vertex_array_range") || - extensionName.equals("GLX_NV_vertex_array_range"))) - return "GL_NV_vertex_array_range"; - return extensionName; - } - - //---------------------------------------------------------------------- - // Internals only below this point - // - - private boolean initialized = false; - private int majorVersion = 1; - private int minorVersion = 0; - private String glExtensions = null; - private String glXExtensions = null; - private HashSet availableExtensionCache = new HashSet(50); - private GLContextImpl context; - - /** - * A class for storing and comparing OpenGL version numbers. - * This only works for desktop OpenGL at the moment. - */ - private static class Version implements Comparable - { - private boolean valid; - private int major, minor, sub; - public Version(int majorRev, int minorRev, int subMinorRev) - { - major = majorRev; - minor = minorRev; - sub = subMinorRev; - } - - /** - * @param versionString must be of the form "GL_VERSION_X" or - * "GL_VERSION_X_Y" or "GL_VERSION_X_Y_Z" or "X.Y", where X, Y, - * and Z are integers. - * - * @exception IllegalArgumentException if the argument is not a valid - * OpenGL version identifier - */ - public Version(String versionString) - { - try - { - if (versionString.startsWith("GL_VERSION_")) - { - StringTokenizer tok = new StringTokenizer(versionString, "_"); - - tok.nextToken(); // GL_ - tok.nextToken(); // VERSION_ - if (!tok.hasMoreTokens()) { major = 0; return; } - major = Integer.valueOf(tok.nextToken()).intValue(); - if (!tok.hasMoreTokens()) { minor = 0; return; } - minor = Integer.valueOf(tok.nextToken()).intValue(); - if (!tok.hasMoreTokens()) { sub = 0; return; } - sub = Integer.valueOf(tok.nextToken()).intValue(); - } - else - { - int radix = 10; - if (versionString.length() > 2) { - if (Character.isDigit(versionString.charAt(0)) && - versionString.charAt(1) == '.' && - Character.isDigit(versionString.charAt(2))) { - major = Character.digit(versionString.charAt(0), radix); - minor = Character.digit(versionString.charAt(2), radix); - - // See if there's version-specific information which might - // imply a more recent OpenGL version - StringTokenizer tok = new StringTokenizer(versionString, " "); - if (tok.hasMoreTokens()) { - tok.nextToken(); - if (tok.hasMoreTokens()) { - String token = tok.nextToken(); - int i = 0; - while (i < token.length() && !Character.isDigit(token.charAt(i))) { - i++; - } - if (i < token.length() - 2 && - Character.isDigit(token.charAt(i)) && - token.charAt(i+1) == '.' && - Character.isDigit(token.charAt(i+2))) { - int altMajor = Character.digit(token.charAt(i), radix); - int altMinor = Character.digit(token.charAt(i+2), radix); - // Avoid possibly confusing situations by putting some - // constraints on the upgrades we do to the major and - // minor versions - if ((altMajor == major && altMinor > minor) || - altMajor == major + 1) { - major = altMajor; - minor = altMinor; - } - } - } - } - } - } - } - valid = true; - } - catch (Exception e) - { - // FIXME: refactor desktop OpenGL dependencies and make this - // class work properly for OpenGL ES - System.err.println("ExtensionAvailabilityCache: FunctionAvailabilityCache.Version.<init>: "+e); - major = 1; - minor = 0; - /* - throw (IllegalArgumentException) - new IllegalArgumentException( - "Illegally formatted version identifier: \"" + versionString + "\"") - .initCause(e); - */ - } - } - - public boolean isValid() { - return valid; - } - - public int compareTo(Object o) - { - Version vo = (Version)o; - if (major > vo.major) return 1; - else if (major < vo.major) return -1; - else if (minor > vo.minor) return 1; - else if (minor < vo.minor) return -1; - else if (sub > vo.sub) return 1; - else if (sub < vo.sub) return -1; - - return 0; // they are equal - } - - public int getMajor() { - return major; - } - - public int getMinor() { - return minor; - } - - } // end class Version -} |