309 lines
13 KiB
Java
309 lines
13 KiB
Java
/*
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* Copyright (c) 2002-2008 LWJGL Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of 'LWJGL' nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.lwjgl.util.generator.opengl;
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import org.lwjgl.util.generator.*;
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import java.io.PrintWriter;
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import java.util.Arrays;
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import java.util.EnumSet;
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import java.util.Iterator;
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import java.util.List;
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import javax.annotation.processing.ProcessingEnvironment;
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import javax.lang.model.element.ExecutableElement;
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import javax.lang.model.element.TypeElement;
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import javax.lang.model.type.TypeMirror;
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/**
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* Generator visitor for the context capabilities generator tool
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*
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* @author elias_naur <elias_naur@users.sourceforge.net>
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* @version $Revision: 3334 $
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* $Id: ContextCapabilitiesGenerator.java 3334 2010-04-22 23:21:48Z spasi $
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*/
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public final class GLESCapabilitiesGenerator {
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private static final String STUBS_LOADED_NAME = "loaded_stubs";
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private static final String ALL_INIT_METHOD_NAME = "initAllStubs";
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private static final String POINTER_INITIALIZER_POSTFIX = "_initNativeFunctionAddresses";
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private static final String CACHED_EXTS_VAR_NAME = "supported_extensions";
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private static final String EXTENSION_PREFIX = "GL_";
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private static final String CORE_PREFIX = "Open";
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public static void generateClassPrologue(PrintWriter writer, boolean context_specific, boolean generate_error_checks) {
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writer.println("public final class " + Utils.CONTEXT_CAPS_CLASS_NAME + " {");
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writer.println("\tstatic final boolean DEBUG = " + Boolean.toString(generate_error_checks) + ";");
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writer.println();
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if ( !context_specific ) {
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writer.println("\tprivate static boolean " + STUBS_LOADED_NAME + ";");
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}
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}
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public static void generateInitializerPrologue(PrintWriter writer) {
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writer.println("\t" + Utils.CONTEXT_CAPS_CLASS_NAME + "() throws LWJGLException {");
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writer.println("\t\tSet<String> " + CACHED_EXTS_VAR_NAME + " = " + ALL_INIT_METHOD_NAME + "();");
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}
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private static String translateFieldName(String interface_name) {
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if ( interface_name.startsWith("GL") )
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return CORE_PREFIX + interface_name;
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else
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return EXTENSION_PREFIX + interface_name;
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}
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public static void generateSuperClassAdds(PrintWriter writer, TypeElement d, ProcessingEnvironment env) {
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List<? extends TypeMirror> super_interfaces = d.getInterfaces();
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if ( super_interfaces.size() > 1 )
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throw new RuntimeException(d + " extends more than one other interface");
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if ( super_interfaces.size() == 1 ) {
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TypeMirror super_interface = super_interfaces.iterator().next();
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writer.print("\t\tif (" + CACHED_EXTS_VAR_NAME + ".contains(\"");
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writer.println(translateFieldName(d.getSimpleName().toString() + "\"))"));
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writer.print("\t\t\t");
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generateAddExtension(writer, env.getElementUtils().getTypeElement(super_interface.toString()));
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}
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}
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public static void generateInitializer(PrintWriter writer, TypeElement d, ProcessingEnvironment env) {
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String translated_field_name = translateFieldName(d.getSimpleName().toString());
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writer.print("\t\tthis." + translated_field_name + " = ");
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writer.print(CACHED_EXTS_VAR_NAME + ".contains(\"");
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writer.print(translated_field_name + "\")");
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List<? extends TypeMirror> super_interfaces = d.getInterfaces();
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if ( super_interfaces.size() > 1 )
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throw new RuntimeException(d + " extends more than one other interface");
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if ( super_interfaces.size() == 1 ) {
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TypeMirror super_interface = super_interfaces.iterator().next();
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writer.println();
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writer.print("\t\t\t&& " + CACHED_EXTS_VAR_NAME + ".contains(\"");
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writer.print(translateFieldName(env.getElementUtils().getTypeElement(super_interface.toString()).getSimpleName() + "\")"));
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}
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Alias alias_annotation = d.getAnnotation(Alias.class);
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if ( alias_annotation != null ) {
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writer.println();
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writer.print("\t\t\t|| " + CACHED_EXTS_VAR_NAME + ".contains(\"");
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writer.print(translateFieldName(alias_annotation.value()) + "\")");
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}
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writer.println(";");
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}
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private static String getAddressesInitializerName(String class_name) {
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return class_name + POINTER_INITIALIZER_POSTFIX;
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}
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public static void generateInitStubsPrologue(PrintWriter writer, boolean context_specific) {
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writer.println("\tprivate Set<String> " + ALL_INIT_METHOD_NAME + "() throws LWJGLException {");
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if ( context_specific ) {
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// Load the basic pointers we need to detect OpenGL version and supported extensions.
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writer.println("\t\tglGetError = GLContext.getFunctionAddress(\"glGetError\");");
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writer.println("\t\tglGetString = GLContext.getFunctionAddress(\"glGetString\");");
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}
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// Get the supported extensions set.
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writer.println("\t\tGLContext.setCapabilities(this);");
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writer.println("\t\tSet<String> " + CACHED_EXTS_VAR_NAME + " = new HashSet<String>(256);");
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if ( !context_specific )
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writer.println("\t\tGLContext.doInitNativeStubs(GLES20.class);");
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writer.println("\t\tGLContext.getSupportedExtensions(" + CACHED_EXTS_VAR_NAME + ");");
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if ( !context_specific ) {
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writer.println("\t\tif (" + STUBS_LOADED_NAME + ")");
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writer.println("\t\t\treturn " + CACHED_EXTS_VAR_NAME + ";");
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} else {
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writer.println("\t\tif (!" + getAddressesInitializerName("GLES20") + "())");
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writer.println("\t\t\tthrow new LWJGLException(\"GL ES 2.0 not supported\");");
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}
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}
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public static void generateInitStubsEpilogue(PrintWriter writer, boolean context_specific) {
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if ( !context_specific )
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writer.println("\t\t" + STUBS_LOADED_NAME + " = true;");
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writer.println("\t\treturn " + CACHED_EXTS_VAR_NAME + ";");
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writer.println("\t}");
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}
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public static void generateUnloadStubs(ProcessingEnvironment env, PrintWriter writer, TypeElement d) {
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// TODO: Remove GLES
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if ( Utils.getMethods(d).size() > 0 && !d.getSimpleName().toString().startsWith("GLES") ) {
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writer.print("\t\tGLContext.resetNativeStubs(" + Utils.getSimpleClassName(d));
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writer.println(".class);");
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}
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}
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public static void generateInitStubs(ProcessingEnvironment env, PrintWriter writer, TypeElement d, boolean context_specific) {
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if ( Utils.getMethods(d).size() > 0 ) {
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if ( context_specific ) {
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final Alias alias_annotation = d.getAnnotation(Alias.class);
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if ( d.getAnnotation(ForceInit.class) != null )
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writer.println("\t\t" + CACHED_EXTS_VAR_NAME + ".add(\"" + translateFieldName(d.getSimpleName().toString()) + "\");");
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writer.print("\t\tif (");
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if ( alias_annotation != null )
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writer.print("(");
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writer.print(CACHED_EXTS_VAR_NAME + ".contains(\"");
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writer.print(translateFieldName(d.getSimpleName().toString()) + "\")");
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if ( alias_annotation != null ) {
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writer.print(" || " + CACHED_EXTS_VAR_NAME + ".contains(\"");
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writer.print(translateFieldName(alias_annotation.value()) + "\"))");
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}
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writer.print(" && !" + getAddressesInitializerName(d.getSimpleName().toString()) + "(");
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if ( d.getAnnotation(Dependent.class) != null )
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writer.print("supported_extensions");
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if ( alias_annotation != null ) {
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writer.println(")) {");
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writer.print("\t\t\tremove(" + CACHED_EXTS_VAR_NAME + ", \"");
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writer.println(translateFieldName(alias_annotation.value()) + "\");");
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} else
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writer.println("))");
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writer.print("\t\t\tremove(" + CACHED_EXTS_VAR_NAME + ", \"");
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writer.println(translateFieldName(d.getSimpleName().toString()) + "\");");
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if ( alias_annotation != null )
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writer.println("\t\t}");
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} else {
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writer.print("\t\tGLContext." + Utils.STUB_INITIALIZER_NAME + "(" + Utils.getSimpleClassName(d));
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writer.println(".class, " + CACHED_EXTS_VAR_NAME + ", \"" + translateFieldName(d.getSimpleName().toString()) + "\");");
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}
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}
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}
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private static void generateAddExtension(PrintWriter writer, TypeElement d) {
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writer.print(CACHED_EXTS_VAR_NAME + ".add(\"");
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writer.println(translateFieldName(d.getSimpleName().toString()) + "\");");
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}
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public static void generateAddressesInitializers(ProcessingEnvironment env, PrintWriter writer, TypeElement d) {
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Iterator<? extends ExecutableElement> methods = Utils.getMethods(d).iterator();
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if ( !methods.hasNext() )
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return;
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writer.print("\tprivate boolean " + getAddressesInitializerName(d.getSimpleName().toString()) + "(");
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boolean optional;
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Dependent dependent = d.getAnnotation(Dependent.class);
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if ( dependent != null ) {
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writer.print("Set<String> supported_extensions");
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}
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Alias alias_annotation = d.getAnnotation(Alias.class);
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boolean aliased = alias_annotation != null && alias_annotation.postfix().length() > 0;
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writer.println(") {");
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writer.println("\t\treturn ");
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boolean first = true;
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while ( methods.hasNext() ) {
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ExecutableElement method = methods.next();
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if ( method.getAnnotation(Alternate.class) != null )
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continue;
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if ( !first )
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writer.println(" &");
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else
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first = false;
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optional = method.getAnnotation(Optional.class) != null;
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dependent = method.getAnnotation(Dependent.class);
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writer.print("\t\t\t(");
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if ( optional )
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writer.print('(');
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if ( dependent != null ) {
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if ( dependent.value().indexOf(',') == -1 )
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writer.print("!supported_extensions.contains(\"" + dependent.value() + "\") || ");
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else {
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writer.print("!(false");
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for ( String extension : dependent.value().split(",") )
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writer.print(" || supported_extensions.contains(\"" + extension + "\")");
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writer.print(") || ");
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}
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}
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if ( dependent != null )
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writer.print('(');
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writer.print(Utils.getFunctionAddressName(d, method) + " = ");
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PlatformDependent platform_dependent = method.getAnnotation(PlatformDependent.class);
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if ( platform_dependent != null ) {
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EnumSet<Platform> platform_set = EnumSet.copyOf(Arrays.asList(platform_dependent.value()));
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writer.print("GLContext.getPlatformSpecificFunctionAddress(\"");
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writer.print(Platform.ALL.getPrefix() + "\", ");
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writer.print("new String[]{");
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Iterator<Platform> platforms = platform_set.iterator();
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while ( platforms.hasNext() ) {
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writer.print("\"" + platforms.next().getOSPrefix() + "\"");
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if ( platforms.hasNext() )
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writer.print(", ");
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}
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writer.print("}, new String[]{");
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platforms = platform_set.iterator();
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while ( platforms.hasNext() ) {
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writer.print("\"" + platforms.next().getPrefix() + "\"");
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if ( platforms.hasNext() )
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writer.print(", ");
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}
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writer.print("}, ");
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} else if ( aliased ) {
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writer.print("GLContext.getFunctionAddress(new String[] {\"" + method.getSimpleName() + "\",\"" + method.getSimpleName() + alias_annotation.postfix() + "\"})) != 0");
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} else
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writer.print("GLContext.getFunctionAddress(");
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if ( !aliased )
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writer.print("\"" + method.getSimpleName() + "\")) != 0");
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if ( dependent != null )
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writer.print(')');
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if ( optional )
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writer.print(" || true)");
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}
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writer.println(";");
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writer.println("\t}");
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writer.println();
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}
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public static void generateSymbolAddresses(ProcessingEnvironment env, PrintWriter writer, TypeElement d) {
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boolean first = true;
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for ( final ExecutableElement method : Utils.getMethods(d) ) {
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if ( method.getAnnotation(Alternate.class) != null || method.getAnnotation(Reuse.class) != null )
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continue;
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if ( first ) {
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writer.println("\t// " + d.getSimpleName());
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first = false;
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}
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writer.println("\tint " + Utils.getFunctionAddressName(d, method) + ";");
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}
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}
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public static void generateField(PrintWriter writer, TypeElement d) {
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writer.println("\tpublic final boolean " + translateFieldName(d.getSimpleName().toString()) + ";");
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}
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}
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