初次提交

第3章 OpenGL ES 2.0概览/Sample3_1/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="src" path="gen"/>
+	<classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

第3章 OpenGL ES 2.0概览/Sample3_1/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Sample3_1</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.ResourceManagerBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.PreCompilerBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.ApkBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>com.android.ide.eclipse.adt.AndroidNature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

第3章 OpenGL ES 2.0概览/Sample3_1/.settings/org.eclipse.jdt.core.prefs

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+#Sat Oct 08 00:03:14 CST 2011
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.5
+org.eclipse.jdt.core.compiler.compliance=1.5
+org.eclipse.jdt.core.compiler.source=1.5

第3章 OpenGL ES 2.0概览/Sample3_1/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+      package="com.bn.Sample3_1"
+      android:versionCode="1"
+      android:versionName="1.0">
+    <uses-sdk android:minSdkVersion="8" />
+
+    <application android:icon="@drawable/icon" android:label="@string/app_name">
+        <activity android:name=".Sample3_1Activity"
+                  android:label="@string/app_name">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+    </application>
+</manifest>

第3章 OpenGL ES 2.0概览/Sample3_1/assets/frag.sh

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+precision mediump float;
+varying  vec4 vColor; //接收从顶点着色器过来的参数
+
+void main()                         
+{                       
+   gl_FragColor = vColor;//给此片元颜色值
+}

第3章 OpenGL ES 2.0概览/Sample3_1/assets/vertex.sh

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+uniform mat4 uMVPMatrix; //总变换矩阵
+attribute vec3 aPosition;  //顶点位置
+attribute vec4 aColor;    //顶点颜色
+varying  vec4 vColor;  //用于传递给片元着色器的变量
+
+void main()     
+{                            		
+   gl_Position = uMVPMatrix * vec4(aPosition,1); //根据总变换矩阵计算此次绘制此顶点位置
+   vColor = aColor;//将接收的颜色传递给片元着色器 
+}                      

第3章 OpenGL ES 2.0概览/Sample3_1/default.properties

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+# This file is automatically generated by Android Tools.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+#
+# This file must be checked in Version Control Systems.
+#
+# To customize properties used by the Ant build system use,
+# "build.properties", and override values to adapt the script to your
+# project structure.
+
+# Project target.
+target=android-8

第3章 OpenGL ES 2.0概览/Sample3_1/gen/com/bn/Sample3_1/R.java

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+/* AUTO-GENERATED FILE.  DO NOT MODIFY.
+ *
+ * This class was automatically generated by the
+ * aapt tool from the resource data it found.  It
+ * should not be modified by hand.
+ */
+
+package com.bn.Sample3_1;
+
+public final class R {
+    public static final class attr {
+    }
+    public static final class drawable {
+        public static final int icon=0x7f020000;
+    }
+    public static final class layout {
+        public static final int main=0x7f030000;
+    }
+    public static final class string {
+        public static final int app_name=0x7f040001;
+        public static final int hello=0x7f040000;
+    }
+}

第3章 OpenGL ES 2.0概览/Sample3_1/proguard.cfg

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+-optimizationpasses 5
+-dontusemixedcaseclassnames
+-dontskipnonpubliclibraryclasses
+-dontpreverify
+-verbose
+-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*
+
+-keep public class * extends android.app.Activity
+-keep public class * extends android.app.Application
+-keep public class * extends android.app.Service
+-keep public class * extends android.content.BroadcastReceiver
+-keep public class * extends android.content.ContentProvider
+-keep public class * extends android.app.backup.BackupAgentHelper
+-keep public class * extends android.preference.Preference
+-keep public class com.android.vending.licensing.ILicensingService
+
+-keepclasseswithmembernames class * {
+    native <methods>;
+}
+
+-keepclasseswithmembers class * {
+    public <init>(android.content.Context, android.util.AttributeSet);
+}
+
+-keepclasseswithmembers class * {
+    public <init>(android.content.Context, android.util.AttributeSet, int);
+}
+
+-keepclassmembers class * extends android.app.Activity {
+   public void *(android.view.View);
+}
+
+-keepclassmembers enum * {
+    public static **[] values();
+    public static ** valueOf(java.lang.String);
+}
+
+-keep class * implements android.os.Parcelable {
+  public static final android.os.Parcelable$Creator *;
+}

第3章 OpenGL ES 2.0概览/Sample3_1/res/layout/main.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="fill_parent"
+    android:layout_height="fill_parent"
+    >
+<TextView  
+    android:layout_width="fill_parent" 
+    android:layout_height="wrap_content" 
+    android:text="@string/hello"
+    />
+</LinearLayout>

第3章 OpenGL ES 2.0概览/Sample3_1/res/values/strings.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="hello">Hello World, Sample3_1Activity!</string>
+    <string name="app_name">Sample3_1</string>
+</resources>

第3章 OpenGL ES 2.0概览/Sample3_1/src/com/bn/Sample3_1/MyTDView.java

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+package com.bn.Sample3_1;
+
+import javax.microedition.khronos.egl.EGLConfig;
+import javax.microedition.khronos.opengles.GL10;
+import android.content.Context;
+import android.opengl.GLES20;
+import android.opengl.GLSurfaceView;
+import android.opengl.Matrix;
+
+public class MyTDView extends GLSurfaceView
+{
+	final float ANGLE_SPAN = 0.375f;
+	
+	RotateThread rthread;
+	SceneRenderer mRenderer;
+	public MyTDView(Context context)
+	{
+		super(context);
+		this.setEGLContextClientVersion(2);
+		mRenderer=new SceneRenderer();
+		this.setRenderer(mRenderer);
+		this.setRenderMode(GLSurfaceView.RENDERMODE_CONTINUOUSLY);
+	}
+	private class SceneRenderer implements GLSurfaceView.Renderer
+	{
+		Triangle tle;
+		public void onDrawFrame(GL10 gl)
+		{
+			//清除深度缓冲与颜色缓冲
+            GLES20.glClear( GLES20.GL_DEPTH_BUFFER_BIT | GLES20.GL_COLOR_BUFFER_BIT);
+            //绘制三角形对
+            tle.drawSelf();    
+		}
+		public void onSurfaceChanged(GL10 gl, int width, int height)
+		{
+			//设置视窗大小及位置 
+        	GLES20.glViewport(0, 0, width, height); 
+        	//计算GLSurfaceView的宽高比
+            float ratio = (float) width / height;
+            //调用此方法计算产生透视投影矩阵
+            Matrix.frustumM(Triangle.mProjMatrix, 0, -ratio, ratio, -1, 1, 1, 10);
+            //调用此方法产生摄像机9参数位置矩阵
+            Matrix.setLookAtM(Triangle.mVMatrix, 0, 0,0,3,0f,0f,0f,0f,1.0f,0.0f); 
+		}
+		public void onSurfaceCreated(GL10 gl, EGLConfig config)
+		{
+			//设置屏幕背景色RGBA
+            GLES20.glClearColor(0,0,0,1.0f);  
+            //创建三角形对对象 
+            tle=new Triangle(MyTDView.this);        
+            //打开深度检测
+            GLES20.glEnable(GLES20.GL_DEPTH_TEST);
+    		rthread=new RotateThread();
+    		rthread.start();
+		}
+	}
+	public class RotateThread extends Thread
+	{
+		public boolean flag=true;
+		@Override
+		public void run()
+		{
+			while(flag)
+			{
+				mRenderer.tle.xAngle=mRenderer.tle.xAngle+ANGLE_SPAN;
+				try
+				{
+					Thread.sleep(20);
+				}
+				catch(Exception e)
+				{
+					e.printStackTrace();
+				}
+			}
+		}
+	}
+}

第3章 OpenGL ES 2.0概览/Sample3_1/src/com/bn/Sample3_1/Sample3_1Activity.java

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+package com.bn.Sample3_1;
+
+import android.app.Activity;
+import android.content.pm.ActivityInfo;
+import android.os.Bundle;
+
+public class Sample3_1Activity extends Activity
+{
+	MyTDView mview;
+    @Override
+    public void onCreate(Bundle savedInstanceState)
+    {
+        super.onCreate(savedInstanceState);
+        //ÉèÖÃΪÊúÆÁģʽ
+		setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
+        mview=new MyTDView(this);
+        mview.requestFocus();
+        mview.setFocusableInTouchMode(true);
+        setContentView(mview);
+    }
+    @Override
+    public void onResume()
+    {
+    	super.onResume();
+    	mview.onResume();
+    }
+    @Override
+    public void onPause()
+    {
+    	super.onPause();
+    	mview.onPause();
+    }
+}

第3章 OpenGL ES 2.0概览/Sample3_1/src/com/bn/Sample3_1/ShaderUtil.java

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+package com.bn.Sample3_1;
+
+import java.io.ByteArrayOutputStream;
+import java.io.InputStream;
+
+import android.content.res.Resources;
+import android.opengl.GLES20;
+import android.util.Log;
+
+//加载顶点Shader与片元Shader的工具类
+public class ShaderUtil 
+{
+   //加载制定shader的方法
+   public static int loadShader
+   (
+		 int shaderType, //shader的类型  GLES20.GL_VERTEX_SHADER(顶点)   GLES20.GL_FRAGMENT_SHADER(片元)
+		 String source   //shader的脚本字符串
+   ) 
+   {
+	    //创建一个新shader
+        int shader = GLES20.glCreateShader(shaderType);
+        //若创建成功则加载shader
+        if (shader != 0) 
+        {
+        	//加载shader的源代码
+            GLES20.glShaderSource(shader, source);
+            //编译shader
+            GLES20.glCompileShader(shader);
+            //存放编译成功shader数量的数组
+            int[] compiled = new int[1];
+            //获取Shader的编译情况
+            GLES20.glGetShaderiv(shader, GLES20.GL_COMPILE_STATUS, compiled, 0);
+            if (compiled[0] == 0) 
+            {//若编译失败则显示错误日志并删除此shader
+                Log.e("ES20_ERROR", "Could not compile shader " + shaderType + ":");
+                Log.e("ES20_ERROR", GLES20.glGetShaderInfoLog(shader));
+                GLES20.glDeleteShader(shader);
+                shader = 0;      
+            }  
+        }
+        return shader;
+    }
+    
+   //创建shader程序的方法
+   public static int createProgram(String vertexSource, String fragmentSource) 
+   {
+	    //加载顶点着色器
+        int vertexShader = loadShader(GLES20.GL_VERTEX_SHADER, vertexSource);
+        if (vertexShader == 0) 
+        {
+            return 0;
+        }
+        
+        //加载片元着色器
+        int pixelShader = loadShader(GLES20.GL_FRAGMENT_SHADER, fragmentSource);
+        if (pixelShader == 0) 
+        {
+            return 0;
+        }
+
+        //创建程序
+        int program = GLES20.glCreateProgram();
+        //若程序创建成功则向程序中加入顶点着色器与片元着色器
+        if (program != 0) 
+        {
+        	//向程序中加入顶点着色器
+            GLES20.glAttachShader(program, vertexShader);
+            checkGlError("glAttachShader");
+            //向程序中加入片元着色器
+            GLES20.glAttachShader(program, pixelShader);
+            checkGlError("glAttachShader");
+            //链接程序
+            GLES20.glLinkProgram(program);
+            //存放链接成功program数量的数组
+            int[] linkStatus = new int[1];
+            //获取program的链接情况
+            GLES20.glGetProgramiv(program, GLES20.GL_LINK_STATUS, linkStatus, 0);
+            //若链接失败则报错并删除程序
+            if (linkStatus[0] != GLES20.GL_TRUE) 
+            {
+                Log.e("ES20_ERROR", "Could not link program: ");
+                Log.e("ES20_ERROR", GLES20.glGetProgramInfoLog(program));
+                GLES20.glDeleteProgram(program);
+                program = 0;
+            }
+        }
+        return program;
+    }
+    
+   //检查每一步操作是否有错误的方法
+   public static void checkGlError(String op) 
+   {
+        int error;
+        while ((error = GLES20.glGetError()) != GLES20.GL_NO_ERROR) 
+        {
+            Log.e("ES20_ERROR", op + ": glError " + error);
+            throw new RuntimeException(op + ": glError " + error);
+        }
+   }
+   
+   //从sh脚本中加载shader内容的方法
+   public static String loadFromAssetsFile(String fname,Resources r)
+   {
+   	String result=null;    	
+   	try
+   	{
+   		InputStream in=r.getAssets().open(fname);
+			int ch=0;
+		    ByteArrayOutputStream baos = new ByteArrayOutputStream();
+		    while((ch=in.read())!=-1)
+		    {
+		      	baos.write(ch);
+		    }      
+		    byte[] buff=baos.toByteArray();
+		    baos.close();
+		    in.close();
+   		result=new String(buff,"UTF-8"); 
+   		result=result.replaceAll("\\r\\n","\n");
+   	}
+   	catch(Exception e)
+   	{
+   		e.printStackTrace();
+   	}    	
+   	return result;
+   }
+}

第3章 OpenGL ES 2.0概览/Sample3_1/src/com/bn/Sample3_1/Triangle.java

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+package com.bn.Sample3_1;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.FloatBuffer;
+import android.opengl.GLES20;
+import android.opengl.Matrix;
+
+//三角形
+public class Triangle
+{
+	public static float[] mProjMatrix = new float[16];//4x4矩阵 投影用
+    public static float[] mVMatrix = new float[16];//摄像机位置朝向9参数矩阵
+    public static float[] mMVPMatrix;//最后起作用的总变换矩阵
+	
+	int mProgram;//自定义渲染管线程序id
+    int muMVPMatrixHandle;//总变换矩阵引用id
+    int maPositionHandle; //顶点位置属性引用id  
+    int maColorHandle; //顶点颜色属性引用id  
+    String mVertexShader;//顶点着色器    	 
+    String mFragmentShader;//片元着色器
+    static float[] mMMatrix = new float[16];//具体物体的移动旋转矩阵，旋转、平移
+	
+	FloatBuffer   mVertexBuffer;//顶点坐标数据缓冲
+	FloatBuffer   mColorBuffer;//顶点着色数据缓冲
+    int vCount=0;	
+    float xAngle=0;//绕x轴旋转的角度
+    public Triangle(MyTDView mv)
+    {    	
+    	//初始化顶点坐标与着色数据
+    	initVertexData();
+    	//初始化shader
+    	initShader(mv);
+    }
+   
+    public void initVertexData()
+    {
+    	//顶点坐标数据的初始化
+        vCount=3;  
+        final float UNIT_SIZE=0.2f;
+        float vertices[]=new float[]
+        {
+        	-4*UNIT_SIZE,0,
+        	0,0,-4*UNIT_SIZE,
+        	0,4*UNIT_SIZE,0,0
+        };
+		
+        ByteBuffer vbb = ByteBuffer.allocateDirect(vertices.length*4);
+        vbb.order(ByteOrder.nativeOrder());
+        mVertexBuffer = vbb.asFloatBuffer();
+        mVertexBuffer.put(vertices);
+        mVertexBuffer.position(0);
+        
+        float colors[]=new float[]
+        {
+        		1,1,1,0,
+        		0,0,1,0,
+        		0,1,0,0
+        };
+        
+        ByteBuffer cbb = ByteBuffer.allocateDirect(colors.length*4);
+        cbb.order(ByteOrder.nativeOrder());
+        mColorBuffer = cbb.asFloatBuffer();
+        mColorBuffer.put(colors);
+        mColorBuffer.position(0);
+    }
+
+    //初始化shader
+    public void initShader(MyTDView mv)
+    {
+    	//加载顶点着色器的脚本内容
+        mVertexShader=ShaderUtil.loadFromAssetsFile("vertex.sh", mv.getResources());
+        //加载片元着色器的脚本内容
+        mFragmentShader=ShaderUtil.loadFromAssetsFile("frag.sh", mv.getResources());  
+        //基于顶点着色器与片元着色器创建程序
+        mProgram = ShaderUtil.createProgram(mVertexShader, mFragmentShader);
+        //获取程序中顶点位置属性引用id  
+        maPositionHandle = GLES20.glGetAttribLocation(mProgram, "aPosition");
+        //获取程序中顶点颜色属性引用id  
+        maColorHandle= GLES20.glGetAttribLocation(mProgram, "aColor");
+        //获取程序中总变换矩阵引用id
+        muMVPMatrixHandle = GLES20.glGetUniformLocation(mProgram, "uMVPMatrix");  
+    }
+    
+    public void drawSelf()
+    {        
+    	 //制定使用某套shader程序
+    	 GLES20.glUseProgram(mProgram);        
+    	 //初始化变换矩阵
+         Matrix.setRotateM(mMMatrix,0,0,0,1,0);
+         //设置沿Z轴正向位移1
+         Matrix.translateM(mMMatrix,0,0,0,1);
+         //设置绕x轴旋转
+         Matrix.rotateM(mMMatrix,0,xAngle,1,0,0);
+         //
+         GLES20.glUniformMatrix4fv(muMVPMatrixHandle, 1, false, Triangle.getFianlMatrix(mMMatrix), 0); 
+         //为画笔指定顶点位置数据
+         GLES20.glVertexAttribPointer(
+         		maPositionHandle,   
+         		3, 
+         		GLES20.GL_FLOAT, 
+         		false,
+                3*4,   
+                mVertexBuffer
+         );
+         GLES20.glVertexAttribPointer  
+         (
+        		maColorHandle,
+         		4,
+         		GLES20.GL_FLOAT,
+         		false,
+                4*4,
+                mColorBuffer
+         );
+         //允许顶点位置数据数组
+         GLES20.glEnableVertexAttribArray(maPositionHandle);  
+         GLES20.glEnableVertexAttribArray(maColorHandle);  
+         //绘制三角形
+         GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, vCount); 
+    }
+    public static float[] getFianlMatrix(float[] spec)
+    {
+    	mMVPMatrix=new float[16];
+    	Matrix.multiplyMM(mMVPMatrix, 0, mVMatrix, 0, spec, 0);
+        Matrix.multiplyMM(mMVPMatrix, 0, mProjMatrix, 0, mMVPMatrix, 0);        
+        return mMVPMatrix;
+    }
+}