视点坐标在模型观察矩阵变换之后和在投影矩阵变换之前的坐标系光照和应用特定裁剪都在视点坐标系中进行
The illumination and application of specific clipping in the coordinate system of the viewpoint coordinate after the model observation matrix transformation and before the projection matrix transformation are all carried out in the viewpoint coordinate system
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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