Initial public release

tests/anyimage/common/test_material_alpha.py

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+import bpy
+import pytest
+from types import SimpleNamespace
+from anyimage.common import material
+from tests.support.materials import image_layer
+
+
+@pytest.mark.parametrize("enabled", [False, True])
+@pytest.mark.parametrize("shadeless", [False, True])
+@pytest.mark.parametrize("view", ["AgX", "Unknown"])
+def test_material_alpha_strength_follows_preference(image_layer, monkeypatch, enabled, shadeless, view):
+    monkeypatch.setattr(material, "material_node_group", lambda depth_plane=False: image_layer)
+    monkeypatch.setattr(material, "configured_material_view_adaptation", lambda: enabled)
+    color = bpy.data.images.new("Alpha edge", width=2, height=2, alpha=True)
+    scene = SimpleNamespace(view_settings=SimpleNamespace(view_transform=view))
+    result = material.create_image_material(color, color, shadeless=shadeless, scene=scene)
+    if shadeless:
+        shader = next(node for node in result.node_tree.nodes if node.type == "GROUP")
+        assert shader.node_tree.name == "O Shadeless"
+        assert shader.inputs["Color"].links[0].from_node.type == "TEX_IMAGE"
+        assert shader.inputs["Alpha"].links[0].from_socket.name == "Alpha"
+        assert len([node for node in result.node_tree.nodes if node.type == "GROUP"]) == 1
+        return
+    layer = next(node for node in result.node_tree.nodes if node.type == "GROUP" and node.node_tree == image_layer)
+    assert layer.inputs["Alpha Fix"].default_value == float(enabled)
+    alpha_link = layer.outputs["Alpha"].links[0]
+    assert alpha_link.to_node.type == "BSDF_PRINCIPLED"
+    assert alpha_link.to_socket.name == "Alpha"
+    layer.inputs["Alpha Fix"].default_value = 0.5
+    monkeypatch.setattr(material, "configured_material_view_adaptation", lambda: not enabled)
+    second = material.create_image_material(color, color, shadeless=shadeless, scene=scene)
+    second_layer = next(node for node in second.node_tree.nodes if node.type == "GROUP" and node.node_tree == image_layer)
+    assert second_layer.inputs["Alpha Fix"].default_value == float(not enabled)
+    assert layer.inputs["Alpha Fix"].default_value == 0.5