OpenGL ES（Android）添加glEnable（GL_COLOR_MATERIAL）時禁用燈光的多維數據集？

Question

這可能是一個非常簡單的問題，我只是沒有得到它。我想在立方體上照明，但有一些面部有不同的顏色。下面的代碼的結果在沒有照明的立方體，但一個黑色面：

private float[] lightAmbient = { 1.0f, 1.0f, 1.0f, 1.0f }; 
    private float[] lightDiffuse = { 1.0f, 1.0f, 1.0f, 1.0f }; 
    private float[] lightPosition = { 0.0f, 0.0f, 3.0f, 1.0f}; 

    float matAmbient[] = new float[] { 0.3f, 0.3f, 0.3f, 1.0f }; 
    float matDiffuse[] = new float[] { 0.6f, 0.6f, 0.6f, 1.0f }; 

    private FloatBuffer vertexBuffer; 

    private FloatBuffer normalBuffer; 

    private FloatBuffer colorBuffer; 

    float vertices[] = new float[] { 
      // FRONT 
      -0.5f, -0.5f, 0.5f, 
      0.5f, -0.5f, 0.5f, 
      -0.5f, 0.5f, 0.5f, 
      0.5f, 0.5f, 0.5f, 
      // BACK 
      -0.5f, -0.5f, -0.5f, 
      -0.5f, 0.5f, -0.5f, 
      0.5f, -0.5f, -0.5f, 
      0.5f, 0.5f, -0.5f, 
      // LEFT 
      -0.5f, -0.5f, 0.5f, 
      -0.5f, 0.5f, 0.5f, 
      -0.5f, -0.5f, -0.5f, 
      -0.5f, 0.5f, -0.5f, 
      // RIGHT 
      0.5f, -0.5f, -0.5f, 
      0.5f, 0.5f, -0.5f, 
      0.5f, -0.5f, 0.5f, 
      0.5f, 0.5f, 0.5f, 
      // TOP 
      -0.5f, 0.5f, 0.5f, 
      0.5f, 0.5f, 0.5f, 
      -0.5f, 0.5f, -0.5f, 
      0.5f, 0.5f, -0.5f, 
      // BOTTOM 
      -0.5f, -0.5f, 0.5f, 
      -0.5f, -0.5f, -0.5f, 
      0.5f, -0.5f, 0.5f, 
      0.5f, -0.5f, -0.5f, 
     }; 

    float colors[] = new float[] { 
      // FRONT 
      0.0f, 0.0f, 0.0f, 0.0f, 
      0.0f, 0.0f, 0.0f, 0.0f, 
      0.0f, 0.0f, 0.0f, 0.0f, 
      0.0f, 0.0f, 0.0f, 0.0f, 
      // BACK 
      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 
      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 
      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 
      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 
      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, 
     }; 

    float normals[] = new float[] { 
      // FRONT 
      0f, 0f, 1f, 
      0f, 0f, 1f, 
      0f, 0f, 1f, 
      0f, 0f, 1f, 
      // BACK 
      0f, 0f, -1f, 
      0f, 0f, -1f, 
      0f, 0f, -1f, 
      0f, 0f, -1f, 
      // LEFT 
      -1f, 0f, 0f, 
      -1f, 0f, 0f, 
      -1f, 0f, 0f, 
      -1f, 0f, 0f, 
      // RIGHT 
      1f, 0f, 0f, 
      1f, 0f, 0f, 
      1f, 0f, 0f, 
      1f, 0f, 0f, 
      // TOP 
      0f, 1f, 0f, 
      0f, 1f, 0f, 
      0f, 1f, 0f, 
      0f, 1f, 0f, 
      // BOTTOM 
      0f, -1f, 0f, 
      0f, -1f, 0f, 
      0f, -1f, 0f, 
      0f, -1f, 0f 
     }; 
... 
      gl.glEnable(GL10.GL_LIGHTING); 
     gl.glEnable(GL10.GL_LIGHT0); 
     gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_AMBIENT, matAmbient, 0); 
     gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_DIFFUSE, matDiffuse, 0); 

     gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_AMBIENT, lightAmbient, 0); 
     gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_DIFFUSE, lightDiffuse, 0); 
     gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_POSITION, lightPosition, 0); 

     gl.glEnable(GL10.GL_DEPTH_TEST); 
     gl.glDepthFunc(GL10.GL_LEQUAL); 


     gl.glEnable(GL10.GL_CULL_FACE); 
     gl.glShadeModel(GL10.GL_SMOOTH); 

     gl.glEnable(GL10.GL_COLOR_MATERIAL); 

     gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 
     gl.glClearDepthf(1.0f); 

     gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertexBuffer); 
     gl.glEnableClientState(GL10.GL_VERTEX_ARRAY); 

     gl.glNormalPointer(GL10.GL_FLOAT, 0, normalBuffer); 
     gl.glEnableClientState(GL10.GL_NORMAL_ARRAY); 

     gl.glColorPointer(4, GL10.GL_FLOAT, 0, colorBuffer); 
     gl.glEnableClientState(GL10.GL_COLOR_ARRAY); 
    } 

    public GLScreen(Context context) { 
     super(context); 
     this.setRenderer(this); 
     this.requestFocus(); 

     vertexBuffer = makeFloatBuffer(vertices); 
     normalBuffer = makeFloatBuffer(normals); 
     colorBuffer = makeFloatBuffer(colors); 
    } 

    float xrot = 0.0f; 
    float yrot = 0.0f; 

    @Override 
    public void onDrawFrame(GL10 gl) { 
     gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT); 

     gl.glMatrixMode(GL10.GL_MODELVIEW); 
     gl.glLoadIdentity(); 
     GLU.gluLookAt(gl, 0, 0, 3, 0, 0, 0, 0, 1, 0); 

     gl.glRotatef(xrot, 1, 0, 0); 
     gl.glRotatef(yrot, 0, 1, 0); 

     gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, 4); 
     gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 4, 4); 

     gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 8, 4); 
     gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 12, 4); 

     gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 16, 4); 
     gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 20, 4); 

     xrot += 1.0f; 
     yrot += 0.5f; 
    } 

取消註釋glEnable（GL10.GL_COLOR_MATERIAL）導致沒有黑色面的點亮立方體。我怎樣才能得到一個帶黑色臉的發光立方體？

Answer 1

我認爲here你會找到答案。 Android模擬器和HTC手機（我不知道其他人，我沒有測試過他們的應用程序）有照明錯誤。