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Tools already exist to do this (pix & NVPerfHUD) but those tools required any given application to cooperate. I.e. if the game wasn't set up to allow it, you couldn't use the tools. Developers typically enable cooperation in their application during development and then disable cooperation for the shipping version. I've used NVPerfHUD before and it's an incredible bit of software; it helps you to visualise & analyse the rendering process and figure out where all of your frame time is going.

It seems this is basically a shadier version of these tools with an emphasis on reverse engineering a scene as opposed to optimising etc. Shady as it may be, it's impressive that someone (one person?) has figured all of this out and put together such a plugin. I think most people can figure out how a particular effect is achieved without having to reverse engineer an application. Also, there's a lot of developers that, far from being secretive, actually write papers on some of their cutting edge stuff and there's various books out there like GPU Gems & ShaderX. On the flipside, the devil is sometimes in the detail and there also exist plenty of companies that don't want to share anything :)

Interesting stuff.

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Well, not really, you still do need to have the exact FOV angle used in-game, otherwise all the objects will be skewed. Also, if you're having a scene with loads of objects, make sure the merge all objects into 1 object (or something like that) is on when you import the scene into max. Max get really slow if you have loads of seperate objects.

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