Remesh 节点
//before
// Fixed Length // Adaptive
// Polygon 转 Curve
Open 和 Unroll 的区别，Open会保持点数一致，导致有缺口，Unroll会增点，保持形状，下图左边是Open，右边是Unroll
vm_displacebound 和 vm_truedisplace（shader中）
vm_displacebound
The maximum bounds that the displacement shader will move geometry. This is defined in "camera" space. Note, that the absolute value is used to determine the bounds.
vm_truedisplace
When running displacement shaders, whether the VEX variable P is actually moved (true displacement) or whether bump mapping will be performed.
在shader中的连接
