Per-pixellighting is implemented by using projective texture mapping technology and simulated the train headlights successfully.
采用投影纹理映射技术实现了像素级光照效果,并成功地用来模拟列车头灯。
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In per-pixellighting, each pixel color is computed individually (as on the left. ) You can see that even when I use low-poly sphere for this example, the lighting still makes it look round.
The paper focuses the GPU based real-time rendering technologies. It involves the following parts: per-pixellighting, real-time shadow, glass and velvet texture rendering, and skinned mesh rendering.