GenerateGLES.java revision 50d0b14689b0ae95ea7b66a8c2f7b955115812dd 
1
2import java.io.BufferedReader;
3import java.io.File;
4import java.io.FileOutputStream;
5import java.io.FileReader;
6import java.io.IOException;
7import java.io.PrintStream;
8
9public class GenerateGLES {
10
11    static void copy(String filename, PrintStream out) throws IOException {
12        BufferedReader br = new BufferedReader(new FileReader(filename));
13        String s;
14        while ((s = br.readLine()) != null) {
15            out.println(s);
16        }
17    }
18
19    private static void emit(GLESCodeEmitter emitter,
20                             BufferedReader specReader,
21                             PrintStream glStream,
22                             PrintStream cStream) throws Exception {
23        String s = null;
24        while ((s = specReader.readLine()) != null) {
25            if (s.trim().startsWith("//")) {
26                continue;
27            }
28
29            CFunc cfunc = CFunc.parseCFunc(s);
30
31            String fname = cfunc.getName();
32            String stubRoot = "stubs/gles11/" + fname;
33            String javaPath = stubRoot + ".java";
34            File f = new File(javaPath);
35            if (f.exists()) {
36                System.out.println("Special-casing function " + fname);
37                copy(javaPath, glStream);
38                copy(stubRoot + ".cpp", cStream);
39
40                // Register native function names
41                // This should be improved to require fewer discrete files
42                String filename = stubRoot + ".nativeReg";
43                BufferedReader br =
44                    new BufferedReader(new FileReader(filename));
45                String nfunc;
46                while ((nfunc = br.readLine()) != null) {
47                    emitter.addNativeRegistration(nfunc);
48                }
49            } else {
50                emitter.emitCode(cfunc, s);
51            }
52        }
53    }
54
55    public static void main(String[] args) throws Exception {
56        int aidx = 0;
57        while ((aidx < args.length) && (args[aidx].charAt(0) == '-')) {
58            switch (args[aidx].charAt(1)) {
59            default:
60                System.err.println("Unknown flag: " + args[aidx]);
61                System.exit(1);
62            }
63
64            aidx++;
65        }
66
67        BufferedReader checksReader =
68            new BufferedReader(new FileReader("specs/gles11/checks.spec"));
69        ParameterChecker checker = new ParameterChecker(checksReader);
70
71        // Generate files
72        for(String suffix: new String[] {"GLES10", "GLES10Ext",
73                "GLES11", "GLES11Ext", "GLES20"})
74        {
75            BufferedReader spec11Reader =
76                new BufferedReader(new FileReader("specs/gles11/"
77                        + suffix + ".spec"));
78            String gl11Filename = "android/opengl/" + suffix + ".java";
79            String gl11cFilename = "android_opengl_" + suffix + ".cpp";
80            PrintStream gl11Stream =
81                new PrintStream(new FileOutputStream("out/" + gl11Filename));
82            PrintStream gl11cStream =
83                new PrintStream(new FileOutputStream("out/" + gl11cFilename));
84            gl11Stream.println("/*");
85            gl11cStream.println("/*");
86            copy("stubs/gles11/" + suffix + "Header.java-if", gl11Stream);
87            copy("stubs/gles11/" + suffix + "cHeader.cpp", gl11cStream);
88            GLESCodeEmitter emitter = new GLESCodeEmitter(
89                    "android/opengl/" + suffix,
90                    checker, gl11Stream, gl11cStream);
91            emit(emitter, spec11Reader, gl11Stream, gl11cStream);
92            emitter.emitNativeRegistration("register_android_opengl_jni_"
93                    + suffix);
94            gl11Stream.println("}");
95            gl11Stream.close();
96            gl11cStream.close();
97        }
98    }
99}
100