Hi All,
I'm doing some experiments with OpenGL using the GLSurfaceView
introduced in 1.5
In my Renderer I keep track of the time spent to render the last frame
and pass this value to the method that update my model. The goal is to
keep objects movements on the screen independent from the rendering
time.
Now... this seems to work perfectly in the emulator, but on the real
device is at least 4/5 times slower!!!
Has anyone experienced the same problem? Or, anyone has a clue of what
I'm doing wrong?
Here's pieces of the code I'm using:
/* Renderer */
public void onDrawFrame(GL10 gl) {
mRefTime = System.currentTimeMillis();
// Update the game state after rendering
if(mLastFrameTime > 0) {
mGameEngine.update(mLastFrameTime);
}
gl.glMatrixMode(GL10.GL_MODELVIEW);
gl.glLoadIdentity();
for (int i = 0; i < mRenderables.length; i++) {
mRenderables[i].draw(gl);
}
mLastFrameTime = System.currentTimeMillis() - mRefTime;
}
/* Update method */
public void update(long lastFrameTime) {
int i, j;
float moveOffset = mGameVelocity * UNIT_VELOCITY_MS *
lastFrameTime;
for(i=0; i<ROW_COUNT; i++) {
for(j=0; j<ROW_SIZE; j++) {
mObj[i][j].x += moveOffset;
}
}
}
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