前言​ 本篇以DX12为API实现局部光照，有关局部光照的知识还请移步https://www.cnblogs.com/chenglixue/p/17140982.html计算法向量计算三角形\(\trianglep_0p_1p_2\)的的平面法线\(u=p_1-p_0,v=p_2-p_0\Rightarrown=\frac{u\timesv}{\|u\timesv||}\)XMVECTORComputeNormal(FXMVECTORp0,FXMVECTORp1,FXMVECTORp2){XMVECTORu=p1-p0;XMVECTORv=p2-p0;returnXMVector3Normal