如果你使用的是简单的对象如球体的话，你还需要通过设定“原始标志”(“ primitive flags ”)以开启纹理贴图功能。

If you are using a simple object like a sphere then you will also have to enable texturing by setting the "primitive flags".

youdao

阴影贴图是基于纹理的方式，最简单的方法把它看作是“阴影纹理”，从灯光投射阴影到场景。

Shadow mapping is a texture based approach, it's easiest to think of it as "shadow textures" projecting out from lights onto the scene.

youdao

我需要一些纹理材质和树木，对于我来说最简单的方法就是从卫星贴图上截屏。

I needed some textures and trees and the easiest way for me to find these was to take screen shots of satellite maps.

youdao