Help Needed: Wireframe Not Showing in Taichi Scene Despite Correct Setup

[aslan-ng]

Hello Taichi Community,

I am currently experiencing an issue with rendering a simple geometry in Taichi where even the wireframe is not visible. I've checked the camera settings, data integrity, and tried several backends, but the issue persists. I am using Taichi for a basic 3D rendering task on a CPU backend. Below, I've provided a snippet of my code and details about the environment and steps I've already tried.

Environment:

• Taichi version: [1.7.1]
• Python version: [3.11]
• Operating System: [Sonoma 14.5]
• Hardware: [Apple M1]

Code Snippet:

import taichi as ti
import numpy as np

ti.init(arch=ti.cpu)  # Initialization
vertices = np.array([[0, 0, 0], [1, 0, 0], [0, 1, 0]], dtype=np.float32)
faces = np.array([[0, 1, 2]], dtype=np.int32)
normals = np.array([[0, 0, 1], [0, 0, 1], [0, 0, 1]], dtype=np.float32)

vertex_field = ti.Vector.field(3, dtype=ti.f32, shape=len(vertices))
face_field = ti.Vector.field(3, dtype=ti.i32, shape=len(faces))
normals_field = ti.Vector.field(3, dtype=ti.f32, shape=len(normals))

vertex_field.from_numpy(vertices)
face_field.from_numpy(faces)
normals_field.from_numpy(normals)

window = ti.ui.Window("Simple Triangle Render", res=(800, 600))
scene = window.get_scene()
camera = ti.ui.Camera()
camera.position(1, 1, 2)
camera.lookat(0.5, 0.5, 0)
camera.fov(60)

while window.running:
    scene.set_camera(camera)
    scene.mesh(vertex_field, indices=face_field, normals= normals_field, color=(0.7, 0.7, 0.7), two_sided=True, show_wireframe=True)
    window.show()

There is this error being shown:
RHI Error: Potential non-conformant Vulkan implementation, enabling VK_KHR_portability_subset

Also, a black screen shows the rendering result.
As far as I checked the taichi examples, they run without any issues.