HYDRA-582 - add test for standard surface

test/lib/mayaUsd/render/mayaToHydra/CMakeLists.txt

@@ -15,9 +15,10 @@ set(INTERACTIVE_TEST_SCRIPT_FILES
     testNewSceneWithStage.py
     testMayaLights.py
     testUSDLights.py
+    testArnoldLights.py
+    testStandardSurface.py
     testFlowViewportAPI.py
     testStageVariants.py
-    testArnoldLights.py
     testNurbsPrimitives.py
     cpp/testColorPreferences.py
     cpp/testCppFramework.py

test/lib/mayaUsd/render/mayaToHydra/testStandardSurface.py

@@ -0,0 +1,76 @@
+#
+# Copyright 2024 Autodesk, Inc. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+import maya.cmds as cmds
+import fixturesUtils
+import mtohUtils
+import mayaUtils
+
+class TestStandardSurface(mtohUtils.MtohTestCase): #Subclassing mtohUtils.MtohTestCase to be able to call self.assertSnapshotClose
+    # MayaHydraBaseTestCase.setUpClass requirement.
+    _file = __file__
+
+    IMAGE_DIFF_FAIL_THRESHOLD = 0.01
+    IMAGE_DIFF_FAIL_PERCENT = 0.2
+
+    #Test the translation from maya standard surface with a maya native plane to usd preview surface.
+    def test_StandardSurface(self):
+        cmds.file(new=True, force=True)
+
+        # Load a maya scene with a maya native plane, which has autodesk standard surface as material
+        testFile = mayaUtils.openTestScene(
+                "testStandardSurface",
+                "testStandardSurface.ma")
+        cmds.refresh()
+
+        #Verify Default display
+        panel = mayaUtils.activeModelPanel()
+        cmds.modelEditor(panel, edit=True, displayTextures=True)
+        cmds.refresh()
+        self.assertSnapshotClose("default" + ".png", self.IMAGE_DIFF_FAIL_THRESHOLD, self.IMAGE_DIFF_FAIL_PERCENT)
+
+        #Verify Diffuse Roughness
+        cmds.setAttr("standardSurface1.diffuseRoughness", 0.5)
+        cmds.refresh()
+        self.assertSnapshotClose("diffuseRoughness" + ".png", self.IMAGE_DIFF_FAIL_THRESHOLD, self.IMAGE_DIFF_FAIL_PERCENT)
+
+        #Verify Metalness
+        cmds.setAttr("standardSurface1.metalness", 0.5)
+        cmds.refresh()
+        self.assertSnapshotClose("metalness" + ".png", self.IMAGE_DIFF_FAIL_THRESHOLD, self.IMAGE_DIFF_FAIL_PERCENT)
+
+        #Verify Specular Roughness
+        cmds.setAttr("standardSurface1.specularRoughness", 0.5)
+        cmds.refresh()
+        self.assertSnapshotClose("specularRoughness" + ".png", self.IMAGE_DIFF_FAIL_THRESHOLD, self.IMAGE_DIFF_FAIL_PERCENT)
+
+        #Verify Specular IOR
+        cmds.setAttr("standardSurface1.specularIOR", 0.5)
+        cmds.refresh()
+        self.assertSnapshotClose("specularIOR" + ".png", self.IMAGE_DIFF_FAIL_THRESHOLD, self.IMAGE_DIFF_FAIL_PERCENT)
+
+        #Verify Transmission
+        cmds.setAttr("standardSurface1.transmission", 0.5)
+        cmds.refresh()
+        self.assertSnapshotClose("transmission" + ".png", self.IMAGE_DIFF_FAIL_THRESHOLD, self.IMAGE_DIFF_FAIL_PERCENT)
+
+        #Verify Emission
+        cmds.setAttr("standardSurface1.emission", 0.5)
+        cmds.refresh()
+        self.assertSnapshotClose("emission" + ".png", self.IMAGE_DIFF_FAIL_THRESHOLD, self.IMAGE_DIFF_FAIL_PERCENT)
+
+if __name__ == '__main__':
+    fixturesUtils.runTests(globals())