OpenGL png图片 纹理贴图，去除png图片黑边

将png图片作为纹理贴图，在图片周围会产生黑边，在网上查了一下，都没有明确指出解决方法！废话不说了，看代码。

1.初始化

 

protected void init(GL10 gl) {    // Setup background color    gl.glClearColor(1, 1, 1, 1);    gl.glEnable(GL10.GL_BLEND);    gl.glBlendFunc(GL10.GL_SRC_ALPHA, GL10.GL_ONE_MINUS_SRC_ALPHA);    glEnable(GL_DEPTH_TEST);    glEnable(GL10.GL_ALPHA_TEST);  // Enable Alpha Testing (To Make BlackTansparent)    glAlphaFunc(GL10.GL_GREATER,0.1f);  // Set Alpha Testing (To Make Black Transparent)    // Setup project matrix    gl.glMatrixMode(GL10.GL_PROJECTION);    gl.glLoadIdentity();    GLU.gluOrtho2D(gl, 0.0f,1.3f,0.0f,1.0f);    gl.glEnable(GL10.GL_TEXTURE_2D);    gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, texBuff);    gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);    tex = loadTexture(gl, bmp);    // Smooth shading    gl.glShadeModel(GL10.GL_SMOOTH);}

2.加载纹理贴图

 

protected static int loadTexture(GL10 gl, Bitmap bmp, boolean reverseRGB) {        int[] textures = new int[1];        glGenTextures(1, textures, 0);        int mTextureID = textures[0];        glBindTexture(GL_TEXTURE_2D, mTextureID);        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,GL_NEAREST);        glTexParameterf(GL_TEXTURE_2D,                GL_TEXTURE_MAG_FILTER,GL_LINEAR);        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,                GL_CLAMP_TO_EDGE);        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,                GL_CLAMP_TO_EDGE);        glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE,                GL_REPLACE);        GLUtils.texImage2D(GL_TEXTURE_2D, 0, bmp, 0);        bmp.recycle();                return mTextureID;}

 

3.效果图