请问如何为网格的每个顶点计算切线?

ayuest

我想为任意网格制作法线贴图效果,请问如何为网格的每个顶点计算切线?其计算切线的原里是什么?请个位大侠帮帮忙.
谢谢!

ZombieMKII

http://www.codesampler.com/dx9src/dx9src_4.htm#dx9_dot3_bump_mapping

Dot3 Per-Pixel Bump Mapping
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This sample also demonstrates how to create tangent, binormal, and normal vectors, for each vertex of our test geometry (a simple cube). ……

看代码。