Question

official java documentation给出了如何使用BufferStrategy的示例：

// Render single frame
 do {
     // The following loop ensures that the contents of the drawing buffer
     // are consistent in case the underlying surface was recreated
     do {
         // Get a new graphics context every time through the loop
         // to make sure the strategy is validated
         Graphics graphics = strategy.getDrawGraphics();

         // Render to graphics
         // ...

         // Dispose the graphics
         graphics.dispose();

         // Repeat the rendering if the drawing buffer contents
         // were restored
     } while (strategy.contentsRestored());

     // Display the buffer
     strategy.show();

     // Repeat the rendering if the drawing buffer was lost
 } while (strategy.contentsLost());

然而，我无法完全掌握这里发生的事情，因为文档对样本来说很安静。

从这段代码示例中我得到了以下概念：在图形对象上调用多个方法时，底层视频内存（VRAM）可能会丢失并在中途恢复。必须重复整个渲染过程。我没有得到的，为什么在策略实例上调用show之后会检查丢失的内容？

完全理解来自Java docs

0 个答案: