Incremented version to 5.0.3

This is because a face can still be rejected by being a duplicate, but it doesn't necessarily have to be degenerate (i.e., a line or point).

io_scene_psk_psa/__init__.py

@@ -1,7 +1,7 @@
 bl_info = {
     "name": "PSK/PSA Importer/Exporter",
     "author": "Colin Basnett, Yurii Ti",
-    "version": (5, 0, 1),
+    "version": (5, 0, 3),
     "blender": (3, 4, 0),
     "description": "PSK/PSA Import/Export (.psk/.psa)",
     "warning": "",

io_scene_psk_psa/psa/export/operators.py

@@ -8,10 +8,10 @@ from bpy.types import Context, Armature, Action, Object, AnimData, TimelineMarke
 from bpy_extras.io_utils import ExportHelper
 from bpy_types import Operator
 
-from io_scene_psk_psa.helpers import populate_bone_group_list, get_nla_strips_in_timeframe
+from ..builder import build_psa, PsaBuildSequence, PsaBuildOptions
-from io_scene_psk_psa.psa.builder import build_psa, PsaBuildSequence, PsaBuildOptions
+from ..export.properties import PSA_PG_export, PSA_PG_export_action_list_item, filter_sequences
-from io_scene_psk_psa.psa.export.properties import PSA_PG_export, PSA_PG_export_action_list_item, filter_sequences
+from ..writer import write_psa
-from io_scene_psk_psa.psa.writer import write_psa
+from ...helpers import populate_bone_group_list, get_nla_strips_in_timeframe
 
 
 def is_action_for_armature(armature: Armature, action: Action):

io_scene_psk_psa/psk/data.py

@@ -16,8 +16,7 @@ class Psk(object):
 
     class Wedge16(Structure):
         _fields_ = [
-            ('point_index', c_uint16),
+            ('point_index', c_uint32),
-            ('padding1', c_int16),
             ('u', c_float),
             ('v', c_float),
             ('material_index', c_uint8),

io_scene_psk_psa/psk/importer.py

@@ -150,17 +150,22 @@ def import_psk(psk: Psk, context, options: PskImportOptions) -> PskImportResult:
 
         bm.verts.ensure_lookup_table()
 
-        degenerate_face_indices = set()
+        invalid_face_indices = set()
         for face_index, face in enumerate(psk.faces):
-            point_indices = [bm.verts[psk.wedges[i].point_index] for i in reversed(face.wedge_indices)]
+            point_indices = map(lambda i: psk.wedges[i].point_index, reversed(face.wedge_indices))
+            points = [bm.verts[i] for i in point_indices]
             try:
-                bm_face = bm.faces.new(point_indices)
+                bm_face = bm.faces.new(points)
                 bm_face.material_index = face.material_index
             except ValueError:
-                degenerate_face_indices.add(face_index)
+                # This happens for two reasons:
+                # 1. Two or more of the face's points are the same. (i.e, point indices of [0, 0, 1])
+                # 2. The face is a duplicate of another face. (i.e., point indices of [0, 1, 2] and [0, 1, 2])
+                invalid_face_indices.add(face_index)
 
-        if len(degenerate_face_indices) > 0:
+        # TODO: Handle invalid faces better.
-            result.warnings.append(f'Discarded {len(degenerate_face_indices)} degenerate face(s).')
+        if len(invalid_face_indices) > 0:
+            result.warnings.append(f'Discarded {len(invalid_face_indices)} invalid face(s).')
 
         bm.to_mesh(mesh_data)
 
@@ -168,7 +173,7 @@ def import_psk(psk: Psk, context, options: PskImportOptions) -> PskImportResult:
         data_index = 0
         uv_layer = mesh_data.uv_layers.new(name='VTXW0000')
         for face_index, face in enumerate(psk.faces):
-            if face_index in degenerate_face_indices:
+            if face_index in invalid_face_indices:
                 continue
             face_wedges = [psk.wedges[i] for i in reversed(face.wedge_indices)]
             for wedge in face_wedges:
@@ -183,7 +188,7 @@ def import_psk(psk: Psk, context, options: PskImportOptions) -> PskImportResult:
                 data_index = 0
                 uv_layer = mesh_data.uv_layers.new(name=f'EXTRAUV{extra_uv_index}')
                 for face_index, face in enumerate(psk.faces):
-                    if face_index in degenerate_face_indices:
+                    if face_index in invalid_face_indices:
                         continue
                     for wedge_index in reversed(face.wedge_indices):
                         u, v = psk.extra_uvs[wedge_index_offset + wedge_index]

io_scene_psk_psa/psk/reader.py

@@ -78,4 +78,16 @@ def read_psk(path: str) -> Psk:
     '''
     psk.material_references = _read_material_references(path)
 
+    '''
+    Tools like UEViewer and CUE4Parse write the point index as a 32-bit integer, exploiting the fact that due to struct
+    alignment, there were 16-bits of padding following the original 16-bit point index in the wedge struct.
+    However, this breaks compatibility with PSK files that were created with older tools that treated the
+    point index as a 16-bit integer and might have junk data written to the padding bits.
+    To work around this, we check if each point is still addressable using a 16-bit index, and if it is, assume the
+    point index is a 16-bit integer and truncate the high bits.
+    '''
+    if len(psk.points) <= 65536:
+        for wedge in psk.wedges:
+            wedge.point_index &= 0xFFFF
+
     return psk