如何减少opengl渲染中的堆增长？

Question

我在opengl android中渲染3d对象，我不断渲染这些对象以实现平滑旋转。代码片段如下：

 public synchronized void render(GL10 gl) {

        calculate();
        if ( mVertexCount == 0 ) return;
        gl.glVertexPointer(3, GL10.GL_FLOAT, 0, mVertices); //3:Specifies the number of coordinates per vertex
        gl.glColorPointer(4, GL10.GL_UNSIGNED_BYTE, 0, mColors);
        int elementVertices = VERTICES_ELEMENT * mRows * mCols;
        for ( int j = 0; j < elementVertices; j += VERTICES_ELEMENT ) {
            gl.glDrawArrays(GL10.GL_TRIANGLE_FAN, j, VERTICES_ELEMENT);
        }
        if ( mShowBorder ) {
            gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, elementVertices, VERTICES_BORDER);
        }
        if ( mShowGrid && mRows != 0 && mCols != 0 ) {
            int j = elementVertices + VERTICES_BORDER;
            for ( int r = 0; r <= mRows; ++r ) {
                int colCount = mCols * 2 + 1;
                gl.glDrawArrays(GL10.GL_LINE_STRIP, j, colCount);
                j += colCount;
            }
            for ( int c = 0; c <= mCols; ++c ) {
                int rowCount = mRows * 2 + 1;
                gl.glDrawArrays(GL10.GL_LINE_STRIP, j, rowCount);
                j += rowCount;
            }
        }
    }