rect[2] == rt->GetGLWidth() && rect[3] == rt->GetGLHeight()
这个错误信息的具体含义我还不太清楚。它出现以后会不停的增长。
在Unity官方论坛里找到不少相同问题的帖子。已经作为bug向官方提交，地址是http://issuetracker.unity3d.com/issues/camera-with-depth-only-or-dont-clear-throws-error-when-image-effects-are-applied
以下是bug内容：
1. Create a camera with Clear Flags set to "Depth Only" or "Don‘t
Clear"
2. Attach an image effect to the
camera
3. Set the game window scale to
16:9
4. Enter game mode. Try resizing the game
window
5. "rect[2] == rt->GetGLWidth() &&
rect[3] == rt->GetGLHeight()" appears in the console
目前临时的解决方法是，将Editor的布局Layout改回默认设置，错误信息将不再出现。
Unity3D 一个较常见的错误信息“rect[2] == rt->GetGLWidth() && rect[3] == rt->GetGLHeight()”
原文：http://www.cnblogs.com/xushiu3d/p/3564266.html