🤔 SH에 입력되는 view direction은 world coordinates인가? 아니면 각각의 Gaussian의 viewing direction인가?

🤔 Tile-based Rendering의 장점은 per point alpha blending에 비해 다음과 같은 장점을 가진다.근데..

Note that there is no additional per-pixel ordering of points, and blending is performed based on this initial sorting. As a consequence, our -blending can be approximate in some configurations. However, these approximations become negligible as splats approach the size of individual pixels. We found that this choice greatly enhances training and rendering performance without producing visible artifacts in converged scenes.

Backward 과정: front to back, back to front?

To avoid the implied dynamic memory management overhead