OpenGL png圖片 紋理貼圖，去除png圖片黑邊

將png圖片作為紋理貼圖，在圖片周圍會產生黑邊，在網上查了一下，都沒有明確指出解決方法！廢話不說了，看代碼。

1.初始化

1. protected void init(GL10 gl) {
2. // Setup background color
3. gl.glClearColor(1, 1, 1, 1);
4. gl.glEnable(GL10.GL_BLEND);
5. gl.glBlendFunc(GL10.GL_SRC_ALPHA, GL10.GL_ONE_MINUS_SRC_ALPHA);
7. glEnable(GL_DEPTH_TEST);
8. glEnable(GL10.GL_ALPHA_TEST); // Enable Alpha Testing (To Make BlackTansparent)
10. glAlphaFunc(GL10.GL_GREATER,0.1f); // Set Alpha Testing (To Make Black Transparent)
12. // Setup project matrix
13. gl.glMatrixMode(GL10.GL_PROJECTION);
14. gl.glLoadIdentity();
15. GLU.gluOrtho2D(gl, 0.0f,1.3f,0.0f,1.0f);
16. gl.glEnable(GL10.GL_TEXTURE_2D);
17. gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, texBuff);
18. gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
20. tex = loadTexture(gl, bmp);
22. // Smooth shading
24. gl.glShadeModel(GL10.GL_SMOOTH);
25. }

2.加載紋理貼圖

1. protected static int loadTexture(GL10 gl, Bitmap bmp, boolean reverseRGB) {
2. int[] textures = new int[1];
3. glGenTextures(1, textures, 0);
4. int mTextureID = textures[0];
5. glBindTexture(GL_TEXTURE_2D, mTextureID);
6. glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,GL_NEAREST);
8. glTexParameterf(GL_TEXTURE_2D,
9. GL_TEXTURE_MAG_FILTER,GL_LINEAR);
10. glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,
11. GL_CLAMP_TO_EDGE);
13. glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,
14. GL_CLAMP_TO_EDGE);
15. glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE,
16. GL_REPLACE);
17. GLUtils.texImage2D(GL_TEXTURE_2D, 0, bmp, 0);
19. bmp.recycle();
21. return mTextureID;
22. }

3.效果圖