Android Opengl ES 2.0 纹理贴图

首先，代码是抄网上的，然后再按自己的愿望改改。

http://www.haogongju.net/art/1420642 ，这个是每个面贴同样的纹理，可惜代码拷贝出来有行号，

我是手工一个个去掉行号编译的，还好代码没问题，可以跑。

http://www.devdiv.com/forum.php?mod=viewthread&tid=75356，这个是opengl 1.x 的，可供

参考。

我的代码就是结合这2个例子改出来的,运行结果如下：

以下是代码。

LessonOneActivity.java

package com.example.android3d_one;import android.app.Activity;import android.app.ActivityManager;import android.content.Context;import android.content.pm.ConfigurationInfo;import android.opengl.GLSurfaceView;import android.os.Bundle;import android.os.Handler;import android.util.Log;public class LessonOneActivity extends Activity {/** Hold a reference to our GLSurfaceView */private GLSurfaceView mGLSurfaceView;LessonOneRenderer mRender;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);mGLSurfaceView = new GLSurfaceView(this);// Check if the system supports OpenGL ES 2.0.final ActivityManager activityManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);final ConfigurationInfo configurationInfo = activityManager.getDeviceConfigurationInfo();final boolean supportsEs2 = configurationInfo.reqGlEsVersion >= 0x20000;if (supportsEs2) {// Request an OpenGL ES 2.0 compatible context.mGLSurfaceView.setEGLContextClientVersion(2);mRender = new LessonOneRenderer(this);// Set the renderer to our demo renderer, defined below.mGLSurfaceView.setRenderer(mRender);} else {// This is where you could create an OpenGL ES 1.x compatible// renderer if you wanted to support both ES 1 and ES 2.return;}setContentView(mGLSurfaceView);handler.postDelayed(runnable, 1000);}Handler handler=new Handler();Runnable runnable=new Runnable() {    public void run() {        // TODO Auto-generated method stub        //要做的事情    handler.postDelayed(this, 1000);        //Log.v("timer",runTop(TOP));    //setTile();    showFPS(mRender.getFPS());    }};private void  showFPS(int fps){this.setTitle("fps:"+fps);} @Overrideprotected void onResume() {// The activity must call the GL surface view's onResume() on activity onResume().super.onResume();mGLSurfaceView.onResume();}@Overrideprotected void onPause() {// The activity must call the GL surface view's onPause() on activity onPause().super.onPause();mGLSurfaceView.onPause();}}

Render.java代码如下：

package com.example.android3d_one;import java.nio.ByteBuffer;import java.nio.ByteOrder;import java.nio.FloatBuffer;import javax.microedition.khronos.egl.EGLConfig;import javax.microedition.khronos.opengles.GL10;import android.content.Context;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.opengl.GLES20;import android.opengl.GLSurfaceView;import android.opengl.GLUtils;import android.opengl.Matrix;import android.os.SystemClock;import android.util.Log;public class LessonOneRenderer implements GLSurfaceView.Renderer { private static final String TAG = "Test5Renderer"; private Context mContext; private static final int BYTES_PER_FLOAT = 4; private final FloatBuffer[] mCubePositions; private final FloatBuffer[] mCubeColors; private final FloatBuffer[] mCubeTextureCoordinates; private float[] mMVPMatrix = new float[16]; private float[] mViewMatrix = new float[16]; private float[] mModelMatrix = new float[16]; private float[] mProjectionMatrix = new float[16]; private int mMVPMatrixHandle; private int mPositionHandle; private int mColorHandle; private int mTextureUniformHandle; private int mTextureCoordinateHandle; private int [] mTextureDataHandle = new int [6]; private int mProgramHandle; private final int POSITION_DATA_SIZE = 3; private final int COLOR_DATA_SIZE = 4; private final int TEXTURE_COORDINATE_DATA_SIZE = 2; int fps;FPSCounter fpsCounter;public LessonOneRenderer(final Context context) { mContext = context; final float cubePosition[][] = { // Front face  {-1.0f, 1.0f, 1.0f, -1.0f, -1.0f, 1.0f, 1.0f, 1.0f, 1.0f, -1.0f, -1.0f, 1.0f, 1.0f, -1.0f, 1.0f, 1.0f, 1.0f, 1.0f,},{// Right face 1.0f, 1.0f, 1.0f, 1.0f, -1.0f, 1.0f,1.0f, 1.0f, -1.0f, 1.0f, -1.0f, 1.0f, 1.0f, -1.0f, -1.0f, 1.0f, 1.0f, -1.0f,},{// Back face 1.0f, 1.0f, -1.0f, 1.0f, -1.0f, -1.0f, -1.0f, 1.0f, -1.0f, 1.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f, 1.0f, -1.0f,},// Left face {-1.0f, 1.0f, -1.0f, -1.0f, -1.0f, -1.0f,-1.0f, 1.0f, 1.0f, -1.0f, -1.0f, -1.0f,-1.0f, -1.0f, 1.0f, -1.0f, 1.0f, 1.0f, },// Top face{-1.0f, 1.0f, -1.0f, -1.0f, 1.0f, 1.0f, 1.0f, 1.0f, -1.0f, -1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, -1.0f,},// Bottom face{1.0f, -1.0f, -1.0f, 1.0f, -1.0f, 1.0f, -1.0f, -1.0f, -1.0f, 1.0f, -1.0f, 1.0f, -1.0f, -1.0f, 1.0f, -1.0f, -1.0f, -1.0f,}}; final float cubeColor[][] = { // Front face (red) {1.0f, 0.0f, 0.0f, 1.0f,1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f,  1.0f, 0.0f, 0.0f, 1.0f,1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, },// Right face (green) {0.0f, 1.0f, 0.0f, 1.0f,  0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f,  },{// Back face (blue) 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f,  },{// Left face (yellow) 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, },{// Top face (cyan) 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, },{// Bottom face (magenta) 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f }};  final float cubeTextureCoordinate[][] =  {  // Front face {0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f,  },{// Right face  0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f,  },{// Back face  0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, },{// Left face  0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f,  },{// Top face  0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f,  },{// Bottom face  0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f }};  mCubePositions = new FloatBuffer[6];for(int i = 0; i <cubePosition.length; i++){mCubePositions[i] = ByteBuffer.allocateDirect(cubePosition[i].length * BYTES_PER_FLOAT).order(ByteOrder.nativeOrder()).asFloatBuffer(); mCubePositions[i].put(cubePosition[i]).position(0);}mCubeColors = new FloatBuffer[6];for(int i = 0; i < cubeColor.length; i++){mCubeColors[i] = ByteBuffer.allocateDirect(cubeColor[i].length * BYTES_PER_FLOAT) .order(ByteOrder.nativeOrder()).asFloatBuffer(); mCubeColors[i].put(cubeColor[i]).position(0); }mCubeTextureCoordinates = new FloatBuffer[6];for(int i = 0; i < cubeTextureCoordinate.length; i++){mCubeTextureCoordinates[i] = ByteBuffer.allocateDirect(cubeTextureCoordinate[i].length * BYTES_PER_FLOAT) .order(ByteOrder.nativeOrder()).asFloatBuffer(); mCubeTextureCoordinates[i].put(cubeTextureCoordinate[i]).position(0); }fpsCounter= new FPSCounter();}   @Override public void onDrawFrame(GL10 gl) {  // TODO Auto-generated method stub GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT | GLES20.GL_DEPTH_BUFFER_BIT); long time = SystemClock.uptimeMillis() % 10000L; float angleInDegrees = (360.0f / 10000.0f) * ((int) time); GLES20.glUseProgram(mProgramHandle); mMVPMatrixHandle = GLES20.glGetUniformLocation(mProgramHandle, "u_MVPMatrix"); mTextureUniformHandle = GLES20.glGetUniformLocation(mProgramHandle, "u_Texture");mPositionHandle = GLES20.glGetAttribLocation(mProgramHandle, "a_Position"); mColorHandle = GLES20.glGetAttribLocation(mProgramHandle, "a_Color"); mTextureCoordinateHandle = GLES20.glGetAttribLocation(mProgramHandle, "a_TexCoordinate");  GLES20.glActiveTexture(GLES20.GL_TEXTURE0); Matrix.setIdentityM(mModelMatrix, 0); Matrix.translateM(mModelMatrix, 0, 0.0f, 0.0f, -5.0f); Matrix.rotateM(mModelMatrix, 0, angleInDegrees, 1.0f, 1.0f, 0.0f); for(int i=0; i < mCubePositions.length; i++){GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mTextureDataHandle[i]); GLES20.glUniform1i(mTextureUniformHandle, 0); drawCube(mCubePositions[i], mCubeColors[i], mCubeTextureCoordinates[i]); }//drawCube(mCubePositions[1], mCubeColors[1], mCubeTextureCoordinates[1]); fps = fpsCounter.getFPS();} private void drawCube(final FloatBuffer cubePositionsBuffer, final FloatBuffer cubeColorsBuffer, final FloatBuffer cubeTextureCoordinatesBuffer) { cubePositionsBuffer.position(0); GLES20.glVertexAttribPointer(mPositionHandle, POSITION_DATA_SIZE, GLES20.GL_FLOAT, false, 0, cubePositionsBuffer); GLES20.glEnableVertexAttribArray(mPositionHandle); cubeColorsBuffer.position(0); GLES20.glVertexAttribPointer(mColorHandle, COLOR_DATA_SIZE, GLES20.GL_FLOAT, false, 0, cubeColorsBuffer); GLES20.glEnableVertexAttribArray(mColorHandle); cubeTextureCoordinatesBuffer.position(0); GLES20.glVertexAttribPointer(mTextureCoordinateHandle, TEXTURE_COORDINATE_DATA_SIZE, GLES20.GL_FLOAT, false, 0, cubeTextureCoordinatesBuffer); GLES20.glEnableVertexAttribArray(mTextureCoordinateHandle);  Matrix.multiplyMM(mMVPMatrix, 0, mViewMatrix, 0, mModelMatrix, 0); Matrix.multiplyMM(mMVPMatrix, 0, mProjectionMatrix, 0, mMVPMatrix, 0); GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false, mMVPMatrix, 0); GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, 6); }  public int getFPS(){return fps;}@Overridepublic void onSurfaceChanged(GL10 gl, int width, int height) { // TODO Auto-generated method stub GLES20.glViewport(0, 0, width, height);  final float ratio = (float) width / height; final float left = -ratio; final float right = ratio; final float bottom = -1.0f; final float top = 1.0f; final float near = 1.0f; final float far = 10.0f; Matrix.frustumM(mProjectionMatrix, 0, left, right, bottom, top, near, far); }  @Overridepublic void onSurfaceCreated(GL10 gl, EGLConfig config) { // TODO Auto-generated method stub GLES20.glClearColor(0.0f, 0.0f, 0.0f, 0.0f); GLES20.glEnable(GLES20.GL_CULL_FACE); GLES20.glEnable(GLES20.GL_DEPTH_TEST); // Position the eye behind the origin. final float eyeX = 0.0f; final float eyeY = 0.0f; final float eyeZ = -0.5f; // We are looking toward the distance final float lookX = 0.0f; final float lookY = 0.0f; final float lookZ = -5.0f;  // Set our up vector. This is where our head would be pointing were we holding the camera. final float upX = 0.0f; final float upY = 1.0f; final float upZ = 0.0f;  // Set the view matrix. This matrix can be said to represent the camera position. // NOTE: In OpenGL 1, a ModelView matrix is used, which is a combination of a model and // view matrix. In OpenGL 2, we can keep track of these matrices separately if we choose. Matrix.setLookAtM(mViewMatrix, 0, eyeX, eyeY, eyeZ, lookX, lookY, lookZ, upX, upY, upZ);  final String vertexShader = getVertexShader(); final String fragmentShader = getFragmentShader();  final int vertexShaderHandle = compileShader(GLES20.GL_VERTEX_SHADER, vertexShader); final int fragmentShaderHandle = compileShader(GLES20.GL_FRAGMENT_SHADER, fragmentShader);  mProgramHandle = createAndLinkProgram(vertexShaderHandle, fragmentShaderHandle, new String[]{"a_Position", "a_Color", "a_TexCoordinate"}); mTextureDataHandle[0] = ToolsUtil.loadTexture(mContext, R.drawable.aa);mTextureDataHandle[1] = ToolsUtil.loadTexture(mContext, R.drawable.bb);mTextureDataHandle[2] = ToolsUtil.loadTexture(mContext, R.drawable.cc);mTextureDataHandle[3] = ToolsUtil.loadTexture(mContext, R.drawable.dd);mTextureDataHandle[4] = ToolsUtil.loadTexture(mContext, R.drawable.ee);mTextureDataHandle[5] = ToolsUtil.loadTexture(mContext, R.drawable.ff);}  private String getVertexShader() {  final String vertexShader =  "uniform mat4 u_MVPMatrix; \n" // A constant representing the combined model/view/projection matrix. + "attribute vec4 a_Position; \n" // Per-vertex position information we will pass in. + "attribute vec4 a_Color; \n" // Per-vertex color information we will pass in.  + "attribute vec2 a_TexCoordinate;\n" // Per-vertex texture coordinate information we will pass in.   + "varying vec4 v_Color; \n" // This will be passed into the fragment shader. + "varying vec2 v_TexCoordinate; \n" // This will be passed into the fragment shader.   + "void main() \n" // The entry point for our vertex shader. + "{ \n" + " v_Color = a_Color; \n" // Pass the color through to the fragment shader. // It will be interpolated across the triangle. + " v_TexCoordinate = a_TexCoordinate;\n"// Pass through the texture coordinate. + " gl_Position = u_MVPMatrix \n" // gl_Position is a special variable used to store the final position. + " * a_Position; \n" // Multiply the vertex by the matrix to get the final point in  + "} \n"; // normalized screen coordinates. \n";   return vertexShader; }  private String getFragmentShader()  {  final String fragmentShader =  "precision mediump float; \n" // Set the default precision to medium. We don't need as high of a // precision in the fragment shader. + "uniform sampler2D u_Texture; \n" // The input texture. + "varying vec4 v_Color; \n" // This is the color from the vertex shader interpolated across the // triangle per fragment.  + "varying vec2 v_TexCoordinate; \n" // Interpolated texture coordinate per fragment.  + "void main() \n" // The entry point for our fragment shader. + "{ \n" //+ " gl_FragColor = v_Color * texture2D(u_Texture, v_TexCoordinate); \n" // Pass the color directly through the pipeline.   + " gl_FragColor = texture2D(u_Texture, v_TexCoordinate); \n" // Pass the color directly through the pipeline.   + "} \n"; return fragmentShader; }  private int compileShader(final int shaderType, final String shaderSource) { int shaderHandle = GLES20.glCreateShader(shaderType); if (shaderHandle != 0) { GLES20.glShaderSource(shaderHandle, shaderSource); GLES20.glCompileShader(shaderHandle); final int[] compileStatus = new int[1]; GLES20.glGetShaderiv(shaderHandle, GLES20.GL_COMPILE_STATUS, compileStatus, 0); if (compileStatus[0] == 0) { Log.e(TAG, "Error compiling shader: " + GLES20.glGetShaderInfoLog(shaderHandle)); GLES20.glDeleteShader(shaderHandle); shaderHandle = 0; } } if (shaderHandle == 0) { throw new RuntimeException("Error creating shader."); } return shaderHandle; }  private int createAndLinkProgram(final int vertexShaderHandle, final int fragmentShaderHandle, final String[] attributes) {int programHandle = GLES20.glCreateProgram();  if (programHandle != 0) { GLES20.glAttachShader(programHandle, vertexShaderHandle); GLES20.glAttachShader(programHandle, fragmentShaderHandle);  if (attributes != null) { final int size = attributes.length; for (int i = 0; i < size; i++) { GLES20.glBindAttribLocation(programHandle, i, attributes[i]); } }  GLES20.glLinkProgram(programHandle); final int[] linkStatus = new int[1]; GLES20.glGetProgramiv(programHandle, GLES20.GL_LINK_STATUS, linkStatus, 0);  if (linkStatus[0] == 0) { Log.e(TAG, "Error compiling program: " + GLES20.glGetProgramInfoLog(programHandle)); GLES20.glDeleteProgram(programHandle); programHandle = 0; } }  if (programHandle == 0) { throw new RuntimeException("Error creating program."); }  return programHandle; }  static class ToolsUtil { public static  int loadTexture(final Context context, final int resourceId) { final int[] textureHandle = new int[1]; GLES20.glGenTextures(1, textureHandle, 0); if(textureHandle[0] != 0) { final BitmapFactory.Options options = new BitmapFactory.Options(); options.inScaled = false; final Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), resourceId, options); GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureHandle[0]); GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST); GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_NEAREST); GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bitmap, 0); bitmap.recycle(); } if(textureHandle[0] == 0) { throw new RuntimeException("failed to load texture"); } return textureHandle[0]; }}class FPSCounter {int FPS;int lastFPS;long tempFPStime;public FPSCounter() {FPS = 0;lastFPS = 0;tempFPStime = 0;}int getFPS() {long nowtime = SystemClock.uptimeMillis();FPS++;if (nowtime - tempFPStime >= 1000) {lastFPS = FPS;tempFPStime = nowtime;FPS = 0;//Log.d("FPSCounter","fps="+lastFPS);}return lastFPS;}}}

记得图片资源放在res/drawable目录下。