Refl: Uses the direction of the reflection vector as coordinates. You will need this input when Environment Mapping.
反射： 使用反射向量的方向作为坐标。环境映射需要这种输入。
2
By reflection matrix the mapping relation of element function pair and spectral vector pair can be established.
元函数对与谱向量对通过反射阵建立映射关系。
3
It took advantage of the vertex texture to model the water surface and simulated the reflection, refraction with environment texture mapping and texture mapping.