PBR1：辐射度量学和色度学
Physically Based Rendering (1):Radiometry and Colorimetry
Model矩阵对于法线的一些非预期变化
object normal transform to world space by model matrix will case some mistakes
RTR4-CN 第六章 纹理（Texture）
texturing
myLittleRenderer02 - 三角面
draw Triangle
myLittleRender01-直线与线框
Learn and Write Code of tinyrenderer 01 lesson
