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add lecture notes for Ray Tracing Acceleration in GAMES101
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---
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title: "lecture 14: Ray Tracing Acceleration"
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date: 2024-12-26
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url: https://www.bilibili.com/video/BV1X7411F744?p=14
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tags:
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- computer_graphics
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---
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ref:GTC
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DLSS 2.0
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RTXGI:实时全局光照技术
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## Using AABBs to accelerate ray tracing
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1. 找到包围盒
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2. 创建格子
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3. 存储包含物体的格子
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对格子进行判断。找到相遇的格子,类似于光栅化一条直线的逻辑。
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大概划分到27个格子就行。
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### Uniform grids
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场景中物体分布不均匀不适合使用格子。
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### Spatial partitions
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空间划分。
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Oct-Tree:八叉树
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KD-Tree:只砍一刀
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BSP-Tree

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