Java：VolatileImage比BufferedImage慢 [英] Java : VolatileImage slower than BufferedImage

问题描述

我正在用java编写游戏，并使用BufferedImages将内容呈现在屏幕上。我在运行游戏的低端机器上遇到了性能问题，所以我转而使用速度更快的VolatileImage。

使用GraphicsConfiguration.createCompatibleVolatileImage（...）创建图像，并使用 Graphics.drawImage（...）（点击链接查看哪一个特别）。它们被绘制在使用双缓冲的Canvas上。

是否有人对这里出了什么问题有了解？

解决方案

很可能你的代码混合了加速和不加速的操作。

文档是必须阅读的。对于使用加速Java图形的人来说，特别是3.2节是必不可少的。

I'm making a game in java and in used BufferedImages to render content to the screen. I had performance issues on low end machines where the game is supposed to run, so I switched to VolatileImage which are normally faster. Except they actually slow the whole thing down.

The images are created with GraphicsConfiguration.createCompatibleVolatileImage(...) and are drawn to the screen with Graphics.drawImage(...) (follow link to see which one specifically). They are drawn upon a Canvas using double buffering.

Does someone has an idea of what is going wrong here ?

解决方案

Most likely your code is mixing accelerated and unaccelerated operations.

This document is a must read. Section 3.2 in particular is essential for anyone working with accelerated Java graphics.

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