Does dynamic SNode support vector field？

[Linyou]

Hi, I'm trying to use dynamic snode to construct a vec3 field, but the documentation only gives the ti.append() method and only supports scalar inputs. Is there any way to construct a dynamic snode for the vector field?

Also, consider the following code.

import taichi as ti
from taichi.math import vec3
ti.init(arch=ti.gpu)

x = ti.Vector.field(3, ti.f32)
block = ti.root.dense(ti.i, 16)
pixel = block.dynamic(ti.j, 16)
pixel.place(x)

@ti.kernel
def make_lists():
    for i in range(5):
        for j in range(i):
            x_vec3 = vec3(i, j, j*j)
            ti.append(x.parent(), i, x_vec3)  

make_lists()

[FantasyVR]

Hi @Linyou, you can only append an int32 value to dynamic SNode now. The walkaround is that you could append the values of vec3 one by one.

[Linyou]

Hi @FantasyVR, thanks for the reply. I am using it to just store the indices when I found that it only supports append an int32 value.

[ailzhang]

@Linyou glad that you can work around it using i32. FYI we plan to refine dynamic snode support in Q4 so stay stuned!