2010-02-11 38 views
1

您可以融合Java和本機OpenGL調用。例如,在onSurfaceCreated中進行設置,但將onDraw調用到本機代碼(甚至是兩者)?我遇到了麻煩本地代碼來呈現,但不能告訴我們,如果這可能是一個問題,如果我拋出C++異常,但他們沒有泡沫了......使用Java和C++的Android OpenGL

private static native void drawFromJni(); 

public void onDrawFrame(GL10 gl) { 
    try{ 
     drawFromJni(); 
     //gl.glDrawArrays... also 
    } 
    catch (Exception ex){ 
     ex.printStackTrace(); 
     Log.e("sv", ex.getMessage()); 
    } 
} 

public void onSurfaceChanged(GL10 gl, int width, int height) { 

    gl.glViewport(0, 0, width, height); 

    float ratio = (float) width/height; 
    gl.glMatrixMode(GL10.GL_PROJECTION); 
    gl.glLoadIdentity(); 
    gl.glFrustumf(-ratio, ratio, -1, 1, 1, 10); 
} 

public void onSurfaceCreated(GL10 gl, EGLConfig config) { 
    gl.glDisable(GL10.GL_DITHER); 
    gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_FASTEST); 
    gl.glClearColor(0,0,0,0); 
    gl.glEnable(GL10.GL_CULL_FACE); 
    gl.glShadeModel(GL10.GL_SMOOTH); 
    gl.glEnable(GL10.GL_DEPTH_TEST); 
} 
+0

有什麼好處? – CommonMan 2012-06-21 22:24:18

回答

3

快速回答是的,它的工作原理。