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7.3 The zfile display driver

A `zfile' is a file that contains enough informations to build a shadow map. The format of a zfile is as follows:

Offset Type Name Description
0 int32 magic 0x2f0867ab on big indian machines, and 0xab67082f on little indian machines;
4 short xres x resolution in pixels;
6 short yres y resolution in pixels;
8 float[16] Np World to Normalized Device Coordinate transformation matrix, in row major order;
72 float[16] Nl World to Camera matrix, in row major order;
136 float[xres*yres] z data top to bottom, left to right ordering.

To build a shadow map using a zfile, use "tdlmake `-shadow'" as described in section 3.3 Using the Texture Optimizer - tdlmake or issue a MakeShadow command in a RIB file.



This document was generated by Aghiles Kheffache on July, 31 2003 using texi2html
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