DOOM 3 Relief Mapping

The modified Doom3 shader was created to test relief mapping technique with high-quality game art. Note, however, that some geometry will no...

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The modified Doom3 shader was created to test relief mapping technique with high-quality game art. Note, however, that some geometry will not look correct with relief mapping as the art for the game was not created for this effect. For correct use of the technique the edges of scene polygons should have no displacement (depth=0). But since the depth maps were created from the game normal maps this is not garranteeded.

This modifcation will not damage your Doom3 installation. It will just extract some textures from the game data pack and modify them to include depth information. All original files are mantained and you can quickly get back to your original Doom3 installation by deleting the extracted files.

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Download 'doom3_reliefmapping.zip' (470KB)

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Doom3 Relief Mapping
=====================


For details about how relief mapping works refer to:

demo  -> http://fabio.policarpo.nom.br/files/reliefmap3.zip
paper -> http://www.shadertech.com/contest/#reliefmapping
         http://fabio.policarpo.nom.br/docs/ReliefMapping_I3D2005.pdf


To install this modification:

- from your Doom3 instalation path create folder doom3\base\glprogs\

- copy file interaction.vfp to folder Doom3\base\glprogs\

- drag and drop file doom3\base\pak004.pk4 into the tool normal2depth.exe

- wait for processing of all normal maps (this will create folder doom3\base\textures)


To remove the modification and get back to original Doom3 installation:

- delete the file doom3\base\glprogs\interaction.vfp
- delete the folder doom3\base\textures

You must select ULTRA QUALITY mode in order to have the calculated depth maps loaded (or else you will see no relief at all).

Relief mapping is slower than standard normal mapping. For this reason, we recommend going down to 640x480 or 800x600 in order to get better FPS through the game. Works great with a GeForce7800 card!


Enjoy,
Fabio Policapo (fabio.policarpo AT gmail.com) and Manuel M. Oliveira (oliveira AT inf.ufrgs.br)

Acknowledgements: The tool for creating depth maps from normal maps (normal2depth.exe) is based on a Poisson multigrid solver written by Carlos E. Scheidegger and Gustavo S. Neto.

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Fabio Policapo


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Registered 7th November 2005

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