opengl/tools/glgen/src/GenerateGLES.java

   1 /*
   2  * Copyright (C) 2009 The Android Open Source Project
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 import java.io.BufferedReader;
  18 import java.io.File;
  19 import java.io.FileOutputStream;
  20 import java.io.FileReader;
  21 import java.io.IOException;
  22 import java.io.PrintStream;
  23
  24 public class GenerateGLES {
  25
  26     static void copy(String filename, PrintStream out) throws IOException {
  27         BufferedReader br = new BufferedReader(new FileReader(filename));
  28         String s;
  29         while ((s = br.readLine()) != null) {
  30             out.println(s);
  31         }
  32     }
  33
  34     private static void emit(GLESCodeEmitter emitter,
  35                              BufferedReader specReader,
  36                              PrintStream glStream,
  37                              PrintStream cStream) throws Exception {
  38         String s = null;
  39         while ((s = specReader.readLine()) != null) {
  40             if (s.trim().startsWith("//")) {
  41                 continue;
  42             }
  43
  44             CFunc cfunc = CFunc.parseCFunc(s);
  45             String fname = cfunc.getName();
  46             String stubRoot = "stubs/gles11/" + fname;
  47             String javaPath = stubRoot + ".java";
  48             File f = new File(javaPath);
  49             if (f.exists()) {
  50                 System.out.println("Special-casing function " + fname);
  51                 copy(javaPath, glStream);
  52                 copy(stubRoot + ".cpp", cStream);
  53
  54                 // Register native function names
  55                 // This should be improved to require fewer discrete files
  56                 String filename = stubRoot + ".nativeReg";
  57                 BufferedReader br =
  58                     new BufferedReader(new FileReader(filename));
  59                 String nfunc;
  60                 while ((nfunc = br.readLine()) != null) {
  61                     emitter.addNativeRegistration(nfunc);
  62                 }
  63             } else {
  64                 emitter.emitCode(cfunc, s);
  65             }
  66         }
  67     }
  68
  69     public static void main(String[] args) throws Exception {
  70         int aidx = 0;
  71         while ((aidx < args.length) && (args[aidx].charAt(0) == '-')) {
  72             switch (args[aidx].charAt(1)) {
  73             default:
  74                 System.err.println("Unknown flag: " + args[aidx]);
  75                 System.exit(1);
  76             }
  77
  78             aidx++;
  79         }
  80
  81         BufferedReader checksReader =
  82             new BufferedReader(new FileReader("specs/gles11/checks.spec"));
  83         ParameterChecker checker = new ParameterChecker(checksReader);
  84
  85         // Generate files
  86         for(String suffix: new String[] {"GLES10", "GLES10Ext",
  87                 "GLES11", "GLES11Ext", "GLES20", "GLES30"})
  88         {
  89             BufferedReader spec11Reader =
  90                 new BufferedReader(new FileReader("specs/gles11/"
  91                         + suffix + ".spec"));
  92             String gl11Filename = "android/opengl/" + suffix + ".java";
  93             String gl11cFilename = "android_opengl_" + suffix + ".cpp";
  94             PrintStream gl11Stream =
  95                 new PrintStream(new FileOutputStream("out/" + gl11Filename));
  96             PrintStream gl11cStream =
  97                 new PrintStream(new FileOutputStream("out/" + gl11cFilename));
  98             copy("stubs/gles11/" + suffix + "Header.java-if", gl11Stream);
  99             copy("stubs/gles11/" + suffix + "cHeader.cpp", gl11cStream);
 100             copy("stubs/gles11/common.cpp", gl11cStream);
 101             GLESCodeEmitter emitter = new GLESCodeEmitter(
 102                     "android/opengl/" + suffix,
 103                     checker, gl11Stream, gl11cStream);
 104             emit(emitter, spec11Reader, gl11Stream, gl11cStream);
 105             emitter.emitNativeRegistration("register_android_opengl_jni_"
 106                     + suffix);
 107             gl11Stream.println("}");
 108             gl11Stream.close();
 109             gl11cStream.close();
 110         }
 111     }
 112 }