Add new tests and functionality for image processing and geometry handling

- Introduced color_image.py for preparing standalone color images for tests.
- Added hdr_image.py to create HDR textures for testing.
- Implemented test_image_depth_panorama.py to evaluate panorama topology, UVs, and depth discontinuities.
- Created test_shadeless.py to validate the opacity and HDR color endpoints of the Shadeless group.
- Developed moge3_export.py for exporting dynamic MoGe-3 backbone and ONNX graphs.
- Added material.py to inherit material slots onto generated geometry.
- Built image_depth_panorama.py to construct a quad panorama with depth separation and sampling.

tests/anyimage/common/test_material_view_adaptation.py

@@ -10,8 +10,7 @@ from anyimage import preferences
 from anyimage.common import image as images
 from anyimage.common import material
 from anyimage.operators.clipboard_image import actions as clipboard
-from anyimage.operators.convert_to_plane.object import create_color_image
-from anyimage.operators.cutout_tool.object import create_cropped_color_image
+from tests.support.color_image import color_image
 
 
 @pytest.fixture
@@ -74,10 +73,7 @@ def test_color_space_and_alpha_follow_preference(color_data, enabled, view, spac
 @pytest.mark.parametrize("enabled", [False, True])
 @pytest.mark.parametrize("kind", [
     "byte", "packed", "file", "dirty",
-    pytest.param("float", marks=pytest.mark.xfail(
-        strict=True,
-        reason="Native float RGB is reinterpreted by Blender after packing and reloading with a display color space",
-    )),
+    "float",
 ])
 def test_material_pixels_survive_pack_and_library_reload(color_data, tmp_path, enabled, kind):
     expected = np.array([[[51, 102, 204, 64], [153, 76, 25, 0]]], dtype=np.uint8)
@@ -100,8 +96,7 @@ def test_material_pixels_survive_pack_and_library_reload(color_data, tmp_path, e
     owner.data = source
     with patch.object(material, "configured_material_view_adaptation", return_value=enabled):
         result = material.configure_material_color_image(source, view_scene("AgX"))
-    assert result != source
-    assert source.alpha_mode == "PREMUL"
+    assert result == source
     np.testing.assert_allclose(images.image_pixels(source), before, atol=1 / 255)
     np.testing.assert_allclose(images.image_pixels(result), before, atol=1 / 255)
     if result.packed_file is None or result.is_dirty:
@@ -121,7 +116,7 @@ def test_material_pixels_survive_pack_and_library_reload(color_data, tmp_path, e
 
 @pytest.mark.parametrize("shadeless", [False, True])
 @pytest.mark.parametrize("entry", ["plane", "cutout", "depth", "clipboard"])
-def test_new_material_uses_current_preference_and_preserves_existing(color_data, entry, shadeless):
+def test_material_configures_the_image_selected_by_its_caller(color_data, entry, shadeless):
     source = bpy.data.images.new("Shared source", width=2, height=2, alpha=True)
     source.pixels.foreach_set(np.tile(np.array([0.2, 0.4, 0.8, 0.25], dtype=np.float32), 4))
     owner = bpy.data.objects.new("Shared Empty", None)
@@ -144,10 +139,8 @@ def test_new_material_uses_current_preference_and_preserves_existing(color_data,
         if entry == "clipboard":
             first = clipboard.create_image_material(source, source, shadeless=shadeless, scene=scene)
         else:
-            if entry == "plane":
-                color = create_color_image(owner)
-            elif entry == "cutout":
-                color = create_cropped_color_image(owner, (0, 0, 2, 2), images.image_rgba(source))
+            if entry == "cutout":
+                color = color_image(owner.data, (0, 0, 2, 2), images.image_rgba(source))
             else:
                 color = source
             first = material.create_image_material(owner.data, color, 0, shadeless=shadeless, scene=scene, **data_textures)
@@ -161,15 +154,15 @@ def test_new_material_uses_current_preference_and_preserves_existing(color_data,
         else:
             second = material.create_image_material(owner.data, original_color, 0, shadeless=shadeless, scene=scene)
         new_color = color_texture(second)
-        assert new_color != original_color
+        assert new_color == original_color
         assert new_color.colorspace_settings.name == "sRGB"
         assert new_color.alpha_mode == "PREMUL"
-        assert original_color.colorspace_settings.name == "AgX Base sRGB"
-        assert original_color.alpha_mode == "STRAIGHT"
+        assert original_color.colorspace_settings.name == "sRGB"
+        assert original_color.alpha_mode == "PREMUL"
         assert not settings.adapt_material_to_view_transform
     assert owner.data == source
     assert source.colorspace_settings.name == "sRGB"
-    assert source.alpha_mode == "STRAIGHT"
+    assert source.alpha_mode == ("STRAIGHT" if entry == "cutout" else "PREMUL")
     for image in (source, original_color, new_color):
         np.testing.assert_allclose(images.image_pixels(image), before, atol=1 / 255)
     for key, image in data_textures.items():