..

comfy_extras/nodes_mesh_postprocess.py

@@ -284,80 +284,6 @@ def fill_holes_fn(vertices, faces, max_perimeter=0.03):
 
     return v, f
 
-
-def make_double_sided(vertices, faces, colors=None, normals=None, z_offset=1e-4):
-    """
-    Creates double-sided mesh using PER-FACE normals for offset.
-    This avoids pole singularities completely.
-    """
-    is_batched = vertices.ndim == 3
-
-    if is_batched:
-        v_list, f_list, c_list = [], [], []
-        for i in range(vertices.shape[0]):
-            # Compute face normals for this mesh
-            v0 = vertices[i][faces[i][:, 0]]
-            v1 = vertices[i][faces[i][:, 1]]
-            v2 = vertices[i][faces[i][:, 2]]
-            fn = torch.cross(v1 - v0, v2 - v0, dim=-1)
-            fn = fn / (torch.norm(fn, dim=-1, keepdim=True) + 1e-8)
-
-            # Offset each face's vertices along its face normal
-            front = torch.stack([v0, v1, v2], dim=1) + fn.unsqueeze(1) * z_offset
-            back  = torch.stack([v0, v1, v2], dim=1) - fn.unsqueeze(1) * z_offset
-
-            front = front.reshape(-1, 3)
-            back = back.reshape(-1, 3)
-
-            f_front = torch.arange(faces[i].shape[0] * 3, device=vertices.device).reshape(-1, 3)
-            f_back = f_front + faces[i].shape[0] * 3
-            f_back = f_back[:, [0, 2, 1]]  # flip winding for back faces
-
-            v_list.append(torch.cat([front, back], dim=0))
-            f_list.append(torch.cat([f_front, f_back], dim=0))
-
-            if colors is not None:
-                c_faces = colors[i][faces[i]]
-                c_front = c_faces.reshape(-1, colors[i].shape[-1])
-                c_back = c_front.clone()
-                c_list.append(torch.cat([c_front, c_back], dim=0))
-
-        out_v = torch.stack(v_list)
-        out_f = torch.stack(f_list)
-        if colors is not None:
-            return out_v, out_f, torch.stack(c_list)
-        return out_v, out_f
-
-    # --- Unbatched ---
-    v0 = vertices[faces[:, 0]]
-    v1 = vertices[faces[:, 1]]
-    v2 = vertices[faces[:, 2]]
-    fn = torch.cross(v1 - v0, v2 - v0, dim=-1)
-    fn = fn / (torch.norm(fn, dim=-1, keepdim=True) + 1e-8)
-
-    # Offset each face's vertices along its face normal
-    front = torch.stack([v0, v1, v2], dim=1) + fn.unsqueeze(1) * z_offset
-    back  = torch.stack([v0, v1, v2], dim=1) - fn.unsqueeze(1) * z_offset
-
-    front = front.reshape(-1, 3)
-    back = back.reshape(-1, 3)
-
-    f_front = torch.arange(faces.shape[0] * 3, device=vertices.device).reshape(-1, 3)
-    f_back = f_front + faces.shape[0] * 3
-    f_back = f_back[:, [0, 2, 1]]  # flip winding for back faces
-
-    v_dup = torch.cat([front, back], dim=0)
-    f_dup = torch.cat([f_front, f_back], dim=0)
-
-    if colors is not None:
-        c_faces = colors[faces]
-        c_front = c_faces.reshape(-1, colors.shape[-1])
-        c_back = c_front.clone()
-        c_dup = torch.cat([c_front, c_back], dim=0)
-        return v_dup, f_dup, c_dup
-
-    return v_dup, f_dup, None
-
 def _cleanup_mesh(verts, faces, min_angle_deg=0.5, max_aspect=100.0):
     if faces.numel() == 0:
         return verts, faces
@@ -905,32 +831,10 @@ class FillHoles(IO.ComfyNode):
             return v, f, c
         return _process_mesh_batch(mesh, _fn)
 
-
-class MakeDoubleSided(IO.ComfyNode):
-    @classmethod
-    def define_schema(cls):
-        return IO.Schema(
-            node_id="MakeDoubleSided",
-            display_name="Make Double Sided",
-            category="latent/3d",
-            description="Duplicates faces with flipped normals so the mesh renders from both sides.",
-            inputs=[IO.Mesh.Input("mesh")],
-            outputs=[IO.Mesh.Output("mesh")],
-        )
-
-    @classmethod
-    def execute(cls, mesh):
-        def _fn(v, f, c):
-            return make_double_sided(v, f, c)
-        return _process_mesh_batch(mesh, _fn)
-
-
-
 class PostProcessMeshExtension(ComfyExtension):
     @override
     async def get_node_list(self) -> list[type[IO.ComfyNode]]:
         return [
-            MakeDoubleSided,
             FillHoles,
             DecimateMesh,
             PaintMesh

comfy_extras/nodes_save_3d.py

@@ -234,6 +234,12 @@ def save_glb(vertices, faces, filepath, metadata=None,
     textures = []
     samplers = []
     materials = []
+    pbr = {
+        "metallicFactor": 0.0,
+        "roughnessFactor": 0.5,
+        "baseColorFactor": [0.22, 0.22, 0.22, 1.0],
+    }
+
     if texture_png_bytes is not None and "TEXCOORD_0" in primitive_attributes:
         buffer_views.append({
             "buffer": 0,
@@ -243,15 +249,13 @@ def save_glb(vertices, faces, filepath, metadata=None,
         images.append({"bufferView": len(buffer_views) - 1, "mimeType": "image/png"})
         samplers.append({"magFilter": 9729, "minFilter": 9729, "wrapS": 33071, "wrapT": 33071})
         textures.append({"source": 0, "sampler": 0})
-        materials.append({
-            "pbrMetallicRoughness": {
-                "baseColorTexture": {"index": 0, "texCoord": 0},
-                "metallicFactor": 0.0,
-                "roughnessFactor": 1.0,
-            },
-            "doubleSided": True,
-        })
-        primitive["material"] = 0
+        pbr["baseColorTexture"] = {"index": 0, "texCoord": 0}
+
+    materials.append({
+        "pbrMetallicRoughness": pbr,
+        "doubleSided": True,
+    })
+    primitive["material"] = 0
 
     gltf = {
         "asset": {"version": "2.0", "generator": "ComfyUI"},
@@ -373,10 +377,14 @@ class SaveGLB(IO.ComfyNode):
                     continue
                 tex_img = Image.fromarray(texture_np[i], mode="RGB") if texture_np is not None else None
                 f = f"{filename}_{counter:05}_.glb"
-                save_glb(vertices_i, faces_i, os.path.join(full_output_folder, f), metadata,
-                         uvs=uvs_i,
-                         vertex_colors=v_colors,
-                         texture_image=tex_img)
+                save_glb(
+                    vertices_i, faces_i,
+                    os.path.join(full_output_folder, f),
+                    metadata,
+                    uvs=uvs_i,
+                    vertex_colors=v_colors,
+                    texture_image=tex_img,
+                )
                 results.append({
                     "filename": f,
                     "subfolder": subfolder,