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+/*
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+ * Copyright (c) 2023 jMonkeyEngine
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+ * All rights reserved.
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+ *
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+ * Redistribution and use in source and binary forms, with or without
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+ * modification, are permitted provided that the following conditions are
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+ * met:
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+ *
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+ * * Redistributions of source code must retain the above copyright
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+ * notice, this list of conditions and the following disclaimer.
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+ *
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+ * * Redistributions in binary form must reproduce the above copyright
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+ * notice, this list of conditions and the following disclaimer in the
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+ * documentation and/or other materials provided with the distribution.
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+ *
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+ * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
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+ * may be used to endorse or promote products derived from this software
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+ * without specific prior written permission.
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+ *
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+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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+ */
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+package jme3test.animation;
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+
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+import com.jme3.anim.SkinningControl;
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+import com.jme3.anim.util.AnimMigrationUtils;
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+import com.jme3.animation.SkeletonControl;
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+import com.jme3.app.SimpleApplication;
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+import com.jme3.light.AmbientLight;
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+import com.jme3.math.ColorRGBA;
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+import com.jme3.scene.Geometry;
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+import com.jme3.scene.Mesh;
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+import com.jme3.scene.Node;
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+import com.jme3.scene.VertexBuffer;
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+
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+/**
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+ * Test for JMonkeyEngine issue #2076: software skinning requires vertex
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+ * normals.
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+ *
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+ * <p>If the issue is resolved, 2 copies of the Jaime model will be rendered.
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+ *
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+ * <p>If the issue is present, then the application will immediately crash,
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+ * typically with a {@code NullPointerException}.
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+ *
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+ * @author Stephen Gold
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+ */
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+public class TestIssue2076 extends SimpleApplication {
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+ /**
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+ * Main entry point for the TestIssue2076 application.
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+ *
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+ * @param args array of command-line arguments (not null)
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+ */
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+ public static void main(String... argv) {
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+ TestIssue2076 app = new TestIssue2076();
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+ app.start();
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+ }
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+
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+ /**
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+ * Initialize this application.
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+ */
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+ @Override
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+ public void simpleInitApp() {
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+ AmbientLight ambientLight = new AmbientLight();
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+ ambientLight.setColor(new ColorRGBA(1f, 1f, 1f, 1f));
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+ rootNode.addLight(ambientLight);
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+ /*
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+ * The original Jaime model was chosen for testing because it includes
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+ * tangent buffers (needed to trigger issue #2076) and uses the old
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+ * animation system (so it can be easily used to test both systems).
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+ */
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+ String assetPath = "Models/Jaime/Jaime.j3o";
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+
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+ testOldAnimationSystem(assetPath);
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+ testNewAnimationSystem(assetPath);
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+ }
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+
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+ /**
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+ * Attach the specified model (which uses the old animation system) to the
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+ * scene graph, enable software skinning, and remove its vertex normals.
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+ *
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+ * @param assetPath the asset path of the test model (not null)
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+ */
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+ private void testOldAnimationSystem(String assetPath) {
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+ Node oldJaime = (Node) assetManager.loadModel(assetPath);
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+ rootNode.attachChild(oldJaime);
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+ oldJaime.setLocalTranslation(-1f, 0f, 0f);
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+
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+ // enable software skinning:
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+ SkeletonControl skeletonControl
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+ = oldJaime.getControl(SkeletonControl.class);
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+ skeletonControl.setHardwareSkinningPreferred(false);
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+
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+ // remove its vertex normals:
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+ Geometry oldGeometry = (Geometry) oldJaime.getChild(0);
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+ Mesh oldMesh = oldGeometry.getMesh();
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+ oldMesh.clearBuffer(VertexBuffer.Type.Normal);
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+ oldMesh.clearBuffer(VertexBuffer.Type.BindPoseNormal);
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+ }
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+
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+ /**
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+ * Attach the specified model, converted to the new animation system, to the
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+ * scene graph, enable software skinning, and remove its vertex normals.
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+ *
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+ * @param assetPath the asset path of the test model (not null)
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+ */
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+ private void testNewAnimationSystem(String assetPath) {
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+ Node newJaime = (Node) assetManager.loadModel(assetPath);
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+ AnimMigrationUtils.migrate(newJaime);
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+ rootNode.attachChild(newJaime);
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+ newJaime.setLocalTranslation(1f, 0f, 0f);
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+
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+ // enable software skinning:
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+ SkinningControl skinningControl
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+ = newJaime.getControl(SkinningControl.class);
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+ skinningControl.setHardwareSkinningPreferred(false);
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+
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+ // remove its vertex normals:
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+ Geometry newGeometry = (Geometry) newJaime.getChild(0);
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+ Mesh newMesh = newGeometry.getMesh();
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+ newMesh.clearBuffer(VertexBuffer.Type.Normal);
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+ newMesh.clearBuffer(VertexBuffer.Type.BindPoseNormal);
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+ }
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+}
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Stephen Gold