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Shelim

Emulating EMBM on modern hardware

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Is it possible to emulate Environment-Mapped Bump Mapping (Matrox G400 feature) on modern 3d cards? Could someone point me to some information about this, as I can't find anything on Google?

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There's an old nVidia sample emulating EMBM.

http://developer.download.nvidia.com/SDK/9.5/Samples/DEMOS/Direct3D9/WaterInteraction.zip

http://developer.download.nvidia.com/SDK/9.5/Samples/DEMOS/Direct3D9/src/WaterInteraction/docs/WaterInteraction.pdf

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Probably the most complete information is in the SDK's from that time, but I don't know where you can get them. Google did bring up some info about EMBM, for example this. It shouldn't be too difficult to implement a pixel shader that does this.

However, these days you'd normally use cube maps for environment maps and normal maps for reading them, so you might want to check on that instead.

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Thanks for replyies - it seems that I writed confusing description of problem; I am looking for emulator that can emulate EMBM on hardware side, so the program which require EMBM will work correctly

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You can still do it in software. Just create a replacement D3D dll which implements it via shaders.

See http://www.gamedev.net/community/forums/topic.asp?topic_id=359794 for an example of the techniques involved.

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1. Try downloading a copy of the DirectX 9.0 (a, b or c) SDK. There's an example of EMBM in there (BumpEarth).

2. ATI's Rage 128 SDK had an EMBM example, but I think ATI might have removed the link very recently.

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Quote:
Original post by Adam_42
You can still do it in software. Just create a replacement D3D dll which implements it via shaders.

See http://www.gamedev.net/community/forums/topic.asp?topic_id=359794 for an example of the techniques involved.
Big thanks! Just what I needed :)

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