求解PS为什么不能旋转了，出现这个对话框

Photoshop CS5 and CS4 leverage the video adapter's chip (the graphics processing unit, or GPU) instead of the computer's main chip (CPU) to speed some functions. Photoshop accesses and uses the GPU when the GPU:supports OpenGL, a software and hardware standard that accelerates video processing when working with large or complex images, including 3D.
has at least 256 MB of RAM.
has a display driver that supports OpenGL 2.0 and Shader Model 3.0, which the GPU uses to perform rendering effects.If your system meets the requirements, Photoshop turns on the Enable OpenGL Drawing preferences setting automatically on Mac OS, Windows, Vista, and Windows 7. In Windows XP (32 bit), you can turn on the option manually if your video adapter supports it. For instructions, seeEnable OpenGL and optimize GPU settingsin Photoshop CS5 Help or About OpenGL in Photoshop CS4 Help.GPU acceleration and OpenGL settings can work but Photoshop on 64-bit Windows XP doesn't support them.

用photoshop的3D旋转功能的时候，会提示：“could not complete your request because it only works with openGL enabled document windows.”，并且所有有关3D的功能都是灰色的，不能使用。

你电脑配置不够，或者驱动不完整，不要用3D旋转功能。直接按ctrl+T旋转就行。