BrickMap:高性能实时CUDA体素路径跟踪器

上传者: 42120550 | 上传时间: 2025-12-03 13:46:16 | 文件大小: 95KB | 文件类型: ZIP
砖图 该系统基于进行了一些调整,以减少内存并添加LoD。 一个重要的改进是该论文在GPU上对每个“砖”(8x8x8体素块)进行了一次分配。 代替使用指针,我们可以简单地使用索引到线性内存块中的索引。 当由于流系统而导致内存块填满时,我们只需将其大小增加一倍(分配更大的内存块并复制旧块)。 为了保持较小的索引并进一步改善数据局部性,我们将世界划分为每个超级块,每个超级块由16x16x16普通8x8x8砖块组成,这意味着最大索引值为4095(16x16x16),仅占用12位。 超级块的砖存储的标准大小为256 * 64字节,应该适合一块表面的砖(16x16)。 每次存储空间满时,我们将存储空间增加一倍,因此256-> 512-> 1024-> etc ... 当射线击到尚未加载到GPU上的砖块时,它将把请求添加到请求缓冲区中。 然后,CPU将把模块上载到GPU。 这样,由于光线不会穿透到超

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