MAYA-104490 Add a basic test for Vp2RenderDelegate geom subset material binding support.

test/lib/mayaUsd/render/vp2RenderDelegate/CMakeLists.txt

@@ -3,6 +3,10 @@ set(TARGET_NAME VP2_RENDER_DELEGATE_TEST)
 # Unit test scripts.
 set(TEST_SCRIPT_FILES "")
 
+list(APPEND TEST_SCRIPT_FILES
+	testVP2RenderDelegateGeomSubset.py
+)
+
 if (CMAKE_UFE_V2_FEATURES_AVAILABLE AND PXR_VERSION GREATER_EQUAL 2008)
     # The point instance selection tests requires UsdImaging API version 14 or
     # later, which is only provided by core USD 20.08 or later.

test/lib/mayaUsd/render/vp2RenderDelegate/testVP2RenderDelegateGeomSubset.py

@@ -0,0 +1,78 @@
+#!/usr/bin/env mayapy
+#
+# Copyright 2021 Autodesk
+#
+# 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 fixturesUtils
+import imageUtils
+import mayaUtils
+import usdUtils
+import testUtils
+
+from mayaUsd import lib as mayaUsdLib
+from mayaUsd import ufe as mayaUsdUfe
+
+from maya import cmds
+
+import ufe
+
+import os
+
+
+class testVP2RenderDelegateGeomSubset(imageUtils.ImageDiffingTestCase):
+    """
+    Tests imaging using the Viewport 2.0 render delegate when using per-instance
+    inherited data on instances.
+    """
+
+    @classmethod
+    def setUpClass(cls):
+        # The test USD data is authored Z-up, so make sure Maya is configured
+        # that way too.
+        cmds.upAxis(axis='z')
+
+        inputPath = fixturesUtils.setUpClass(__file__,
+            initializeStandalone=False, loadPlugin=False)
+
+        cls._baselineDir = os.path.join(inputPath,
+            'VP2RenderDelegateGeomSubsetTest', 'baseline')
+
+        cls._testDir = os.path.abspath('.')
+
+    def assertSnapshotClose(self, imageName):
+        baselineImage = os.path.join(self._baselineDir, imageName)
+        snapshotImage = os.path.join(self._testDir, imageName)
+        imageUtils.snapshot(snapshotImage, width=960, height=540)
+        return self.assertImagesClose(baselineImage, snapshotImage)
+
+    def _StartTest(self, testName):
+        cmds.file(force=True, new=True)
+        cmds.move(2, -2, 1.5, 'persp')
+        mayaUtils.loadPlugin("mayaUsdPlugin")
+
+        self._testName = testName
+        testFile = testUtils.getTestScene("geomSubset", self._testName + ".usda")
+        mayaUtils.createProxyFromFile(testFile)
+        globalSelection = ufe.GlobalSelection.get()
+        globalSelection.clear()
+        self.assertSnapshotClose('%s_unselected.png' % self._testName)
+
+    def testPerInstanceInheritedData(self):
+        self._StartTest('perFaceShaders')
+
+
+
+if __name__ == '__main__':
+    fixturesUtils.runTests(globals())

test/testSamples/geomSubset/perFaceShaders.usda

@@ -0,0 +1,67 @@
+#usda 1.0
+(
+    defaultPrim = "pCube1"
+    metersPerUnit = 0.01
+    upAxis = "Z"
+)
+
+def Mesh "pCube1" (
+    prepend apiSchemas = ["MaterialBindingAPI"]
+    kind = "component"
+)
+{
+    uniform bool doubleSided = 1
+    float3[] extent = [(-0.5, -0.5, -0.5), (0.5, 0.5, 0.5)]
+    int[] faceVertexCounts = [4, 4, 4, 4, 4, 4]
+    int[] faceVertexIndices = [0, 1, 3, 2, 2, 3, 5, 4, 4, 5, 7, 6, 6, 7, 1, 0, 1, 7, 5, 3, 6, 0, 2, 4]
+    point3f[] points = [(-0.5, -0.5, 0.5), (0.5, -0.5, 0.5), (-0.5, 0.5, 0.5), (0.5, 0.5, 0.5), (-0.5, 0.5, -0.5), (0.5, 0.5, -0.5), (-0.5, -0.5, -0.5), (0.5, -0.5, -0.5)]
+    texCoord2f[] primvars:map1 = [(0.375, 0), (0.625, 0), (0.625, 0.25), (0.375, 0.25), (0.625, 0.5), (0.375, 0.5), (0.625, 0.75), (0.375, 0.75), (0.625, 1), (0.375, 1), (0.875, 0), (0.875, 0.25), (0.125, 0), (0.125, 0.25)] (
+        interpolation = "faceVarying"
+    )
+    int[] primvars:map1:indices = [0, 1, 2, 3, 3, 2, 4, 5, 5, 4, 6, 7, 7, 6, 8, 9, 1, 10, 11, 2, 12, 0, 3, 13]
+    uniform token subsetFamily:materialBind:familyType = "partition"
+
+    def Scope "Looks"
+    {
+        def Material "initialShadingGroup"
+        {
+        }
+
+        def Material "lambert2SG"
+        {
+            token outputs:surface.connect = </pCube1/Looks/lambert2SG/lambert2.outputs:surface>
+
+            def Shader "lambert2"
+            {
+                uniform token info:id = "UsdPreviewSurface"
+                color3f inputs:diffuseColor = (0.8, 0, 0)
+                normal3f inputs:normal = (1, 1, 1)
+                float inputs:roughness = 1
+                int inputs:useSpecularWorkflow = 1
+                token outputs:displacement
+                token outputs:surface
+            }
+        }
+    }
+
+    def GeomSubset "initialShadingGroup" (
+        prepend apiSchemas = ["MaterialBindingAPI"]
+    )
+    {
+        uniform token elementType = "face"
+        uniform token familyName = "materialBind"
+        int[] indices = [1, 2, 3, 4, 5]
+        rel material:binding = </pCube1/Looks/initialShadingGroup>
+    }
+
+    def GeomSubset "lambert2SG" (
+        prepend apiSchemas = ["MaterialBindingAPI"]
+    )
+    {
+        uniform token elementType = "face"
+        uniform token familyName = "materialBind"
+        int[] indices = [0]
+        rel material:binding = </pCube1/Looks/lambert2SG>
+    }
+}
+