From 2b954ff1fe88f35b59da6c6f6b82fde70274a6ef Mon Sep 17 00:00:00 2001
From: Michael Bien <mbien@fh-landshut.de>
Date: Sat, 27 Mar 2010 23:24:13 +0100
Subject: refactoring: renamed com.sun.opengl -> com.jogamp.opengl.

---
 .../com/jogamp/opengl/util/glsl/ShaderCode.java    | 347 +++++++++++++++++++++
 1 file changed, 347 insertions(+)
 create mode 100644 src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderCode.java

(limited to 'src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderCode.java')

diff --git a/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderCode.java b/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderCode.java
new file mode 100644
index 000000000..01b94d0d9
--- /dev/null
+++ b/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderCode.java
@@ -0,0 +1,347 @@
+
+package com.jogamp.opengl.util.glsl;
+
+import javax.media.opengl.*;
+import com.jogamp.opengl.util.*;
+import com.jogamp.opengl.impl.Debug;
+
+import java.util.*;
+import java.nio.*;
+import java.io.*;
+import java.net.*;
+import java.security.*;
+
+public class ShaderCode {
+    public static final boolean DEBUG = Debug.debug("GLSLCode");
+    public static final boolean DEBUG_CODE = Debug.isPropertyDefined("jogl.debug.GLSLCode", true, AccessController.getContext());
+
+    public static final String SUFFIX_VERTEX_SOURCE   =  "vp" ;
+    public static final String SUFFIX_VERTEX_BINARY   = "bvp" ;
+    public static final String SUFFIX_FRAGMENT_SOURCE =  "fp" ;
+    public static final String SUFFIX_FRAGMENT_BINARY = "bfp" ;
+    
+    public static final String SUB_PATH_NVIDIA = "nvidia" ;
+
+    public ShaderCode(int type, int number, String[][] source) {
+        switch (type) {
+            case GL2ES2.GL_VERTEX_SHADER:
+            case GL2ES2.GL_FRAGMENT_SHADER:
+                break;
+            default:
+                throw new GLException("Unknown shader type: "+type);
+        }
+        shaderSource = source;
+        shaderBinaryFormat = -1;
+        shaderBinary = null;
+        shaderType   = type;
+        shader = BufferUtil.newIntBuffer(number);
+        id = getNextID();
+
+        if(DEBUG_CODE) {
+            System.out.println("Created: "+toString());
+            dumpShaderSource(System.out);
+        }
+    }
+
+    public ShaderCode(int type, int number, int binFormat, Buffer binary) {
+        switch (type) {
+            case GL2ES2.GL_VERTEX_SHADER:
+            case GL2ES2.GL_FRAGMENT_SHADER:
+                break;
+            default:
+                throw new GLException("Unknown shader type: "+type);
+        }
+        shaderSource = null;
+        shaderBinaryFormat = binFormat;
+        shaderBinary = binary;
+        shaderType   = type;
+        shader = BufferUtil.newIntBuffer(number);
+        id = getNextID();
+    }
+
+    public static ShaderCode create(GL2ES2 gl, int type, int number, Class context, String[] sourceFiles) {
+        if(!ShaderUtil.isShaderCompilerAvailable(gl)) return null;
+
+        String[][] shaderSources = null;
+        if(null!=sourceFiles) {
+            shaderSources = new String[sourceFiles.length][1];
+            for(int i=0; null!=shaderSources && i<sourceFiles.length; i++) {
+                shaderSources[i][0] = readShaderSource(context, sourceFiles[i]);
+                if(null == shaderSources[i][0]) {
+                    shaderSources = null;
+                }
+            }
+        }
+        if(null==shaderSources) {
+            return null;
+        }
+        return new ShaderCode(type, number, shaderSources);
+    }
+
+    public static ShaderCode create(int type, int number, Class context, int binFormat, String binaryFile) {
+        ByteBuffer shaderBinary = null;
+        if(null!=binaryFile && 0<=binFormat) {
+            shaderBinary = readShaderBinary(context, binaryFile);
+            if(null == shaderBinary) {
+                binFormat = -1;
+            }
+        }
+        if(null==shaderBinary) {
+            return null;
+        }
+        return new ShaderCode(type, number, binFormat, shaderBinary);
+    }
+
+    public static String getFileSuffix(boolean binary, int type) {
+        switch (type) {
+            case GL2ES2.GL_VERTEX_SHADER:
+                return binary?SUFFIX_VERTEX_BINARY:SUFFIX_VERTEX_SOURCE;
+            case GL2ES2.GL_FRAGMENT_SHADER:
+                return binary?SUFFIX_FRAGMENT_BINARY:SUFFIX_FRAGMENT_SOURCE;
+            default:
+                throw new GLException("illegal shader type: "+type);
+        }
+    }
+
+    public static String getBinarySubPath(int binFormat) {
+        switch (binFormat) {
+            case GLES2.GL_NVIDIA_PLATFORM_BINARY_NV:
+                return SUB_PATH_NVIDIA;
+            default:
+                throw new GLException("unsupported binary format: "+binFormat);
+        }
+    }
+
+    public static ShaderCode create(GL2ES2 gl, int type, int number, Class context, 
+                                    String srcRoot, String binRoot, String basename) {
+        ShaderCode res = null;
+        String srcFileName = null;
+        String binFileName = null;
+
+        if(ShaderUtil.isShaderCompilerAvailable(gl)) {
+            String srcPath[] = new String[1];
+            srcFileName = srcRoot + '/' + basename + "." + getFileSuffix(false, type);
+            srcPath[0] = srcFileName;
+            res = create(gl, type, number, context, srcPath);
+            if(null!=res) {
+                return res;
+            }
+        }
+        Set binFmts = ShaderUtil.getShaderBinaryFormats(gl);
+        for(Iterator iter=binFmts.iterator(); null==res && iter.hasNext(); ) {
+            int bFmt = ((Integer)(iter.next())).intValue();
+            String bFmtPath = getBinarySubPath(bFmt);
+            if(null==bFmtPath) continue;
+            binFileName = binRoot + '/' + bFmtPath + '/' + basename + "." + getFileSuffix(true, type);
+            res = create(type, number, context, bFmt, binFileName);
+        }
+
+        if(null==res) {
+            throw new GLException("No shader code found (source nor binary) for src: "+srcFileName+
+                                  ", bin: "+binFileName);
+        }
+
+        return res;
+    }
+
+    /**
+     * returns the uniq shader id as an integer
+     * @see #key()
+     */
+    public int        id() { return id.intValue(); }
+
+    /**
+     * returns the uniq shader id as an Integer
+     *
+     * @see #id()
+     */
+    public Integer    key() { return id; }
+
+    public int        shaderType() { return shaderType; }
+    public String     shaderTypeStr() { return shaderTypeStr(shaderType); }
+
+    public static String shaderTypeStr(int type) { 
+        switch (type) {
+            case GL2ES2.GL_VERTEX_SHADER:
+                return "VERTEX_SHADER";
+            case GL2ES2.GL_FRAGMENT_SHADER:
+                return "FRAGMENT_SHADER";
+        }
+        return "UNKNOWN_SHADER";
+    }
+
+    public int        shaderBinaryFormat() { return shaderBinaryFormat; }
+    public Buffer     shaderBinary() { return shaderBinary; }
+    public String[][] shaderSource() { return shaderSource; }
+
+    public boolean    isValid() { return valid; }
+
+    public IntBuffer  shader() { return shader; }
+
+    public boolean compile(GL2ES2 gl) {
+        return compile(gl, null);
+    }
+    public boolean compile(GL2ES2 gl, PrintStream verboseOut) {
+        if(isValid()) return true;
+
+        // Create & Compile the vertex/fragment shader objects
+        if(null!=shaderSource) {
+            valid=ShaderUtil.createAndCompileShader(gl, shader, shaderType,
+                                                    shaderSource, verboseOut);
+        } else if(null!=shaderBinary) {
+            valid=ShaderUtil.createAndLoadShader(gl, shader, shaderType,
+                                                 shaderBinaryFormat, shaderBinary, verboseOut);
+        } else {
+            throw new GLException("no code (source or binary)");
+        }
+        return valid;
+    }
+
+    public void destroy(GL2ES2 gl) {
+        if(isValid()) {
+            if(null!=gl) {
+                ShaderUtil.deleteShader(gl, shader());
+            }
+            valid=false;
+        }
+        if(null!=shaderBinary) {
+            shaderBinary.clear();
+            shaderBinary=null;
+        }
+        shaderSource=null;
+        shaderBinaryFormat=-1;
+        shaderType=-1;
+        id=null;
+    }
+
+    public boolean equals(Object obj) {
+        if(this==obj) return true;
+        if(obj instanceof ShaderCode) {
+            return id()==((ShaderCode)obj).id();
+        }
+        return false;
+    }
+    public int hashCode() {
+        return id.intValue();
+    }
+    public String toString() {
+        StringBuffer buf = new StringBuffer("ShaderCode [id="+id+", type="+shaderTypeStr()+", valid="+valid+", shader: ");
+        for(int i=0; i<shader.remaining(); i++) {
+            buf.append(" "+shader.get(i));
+        }
+        if(null!=shaderSource) {
+            buf.append(", source]");
+        } else if(null!=shaderBinary) {
+            buf.append(", binary "+shaderBinary+"]");
+        }
+        return buf.toString();
+    }
+
+    public void dumpShaderSource(PrintStream out) {
+        if(null==shaderSource) {
+            out.println("<no shader source>");
+            return;
+        }
+        int sourceNum = (null!=shaderSource)?shaderSource.length:0;
+        int shaderNum = (null!=shader)?shader.capacity():0;
+        for(int i=0; i<shaderNum; i++) {
+            out.println("");
+            out.println("Shader #"+i+"/"+shaderNum+" name "+shader.get(i));
+            out.println("--------------------------------------------------------------");
+            if(i>=sourceNum) {
+                out.println("<no shader source>");
+            } else {
+                String[] src = shaderSource[i];
+                for(int j=0; j<src.length; j++) {
+                    out.println("Segment "+j+"/"+src.length+" :");
+                    out.println(src[j]);
+                    out.println("");
+                }
+            }
+            out.println("--------------------------------------------------------------");
+        }
+    }
+
+    public static void readShaderSource(ClassLoader context, String path, URL url, StringBuffer result) {
+        try {
+            BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream()));
+            String line = null;
+            while ((line = reader.readLine()) != null) {
+                if (line.startsWith("#include ")) {
+                    String includeFile = line.substring(9).trim();
+                    // Try relative path first
+                    String next = Locator.getRelativeOf(path, includeFile);
+                    URL nextURL = Locator.getResource(next, context);
+                    if (nextURL == null) {
+                        // Try absolute path
+                        next = includeFile;
+                        nextURL = Locator.getResource(next, context);
+                    }
+                    if (nextURL == null) {
+                        // Fail
+                        throw new FileNotFoundException("Can't find include file " + includeFile);
+                    }
+                    readShaderSource(context, next, nextURL, result);
+                } else {
+                    result.append(line + "\n");
+                }
+            }
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public static String readShaderSource(Class context, String path) {
+        ClassLoader contextCL = (null!=context)?context.getClassLoader():null;
+        URL url = Locator.getResource(path, contextCL);
+        if (url == null && null!=context) {
+            // Try again by scoping the path within the class's package
+            String className = context.getName().replace('.', '/');
+            int lastSlash = className.lastIndexOf('/');
+            if (lastSlash >= 0) {
+                String tmpPath = className.substring(0, lastSlash + 1) + path;
+                url = Locator.getResource(tmpPath, contextCL);
+                if (url != null) {
+                    path = tmpPath;
+                }
+            }
+        }
+        if (url == null) {
+            return null;
+        }
+        StringBuffer result = new StringBuffer();
+        readShaderSource(contextCL, path, url, result);
+        return result.toString();
+    }
+
+    public static ByteBuffer readShaderBinary(Class context, String path) {
+        try {
+            URL url = Locator.getResource(context, path);
+            if (url == null) {
+                return null;
+            }
+            return StreamUtil.readAll2Buffer(new BufferedInputStream(url.openStream()));
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    //----------------------------------------------------------------------
+    // Internals only below this point
+    //
+
+    protected String[][] shaderSource = null;
+    protected Buffer     shaderBinary = null;
+    protected int        shaderBinaryFormat = -1;
+    protected IntBuffer  shader = null;
+    protected int        shaderType = -1;
+    protected Integer    id = null;
+
+    protected boolean valid=false;
+
+    private static synchronized Integer getNextID() {
+        return new Integer(nextID++);
+    }
+    protected static int nextID = 1;
+}
+
-- 
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