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Fix sign of tbn generator that caused normal map flipping in some sit…
…uations (jMonkeyEngine#2140)
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jme3-examples/src/main/java/jme3test/material/TestNormalMappingConsistency.java
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| /* | ||
| * Copyright (c) 2009-2021 jMonkeyEngine | ||
| * All rights reserved. | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions are | ||
| * met: | ||
| * | ||
| * * Redistributions of source code must retain the above copyright | ||
| * notice, this list of conditions and the following disclaimer. | ||
| * | ||
| * * Redistributions in binary form must reproduce the above copyright | ||
| * notice, this list of conditions and the following disclaimer in the | ||
| * documentation and/or other materials provided with the distribution. | ||
| * | ||
| * * Neither the name of 'jMonkeyEngine' nor the names of its contributors | ||
| * may be used to endorse or promote products derived from this software | ||
| * without specific prior written permission. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | ||
| * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | ||
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | ||
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | ||
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | ||
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | ||
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | ||
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | ||
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| */ | ||
|
|
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| package jme3test.material; | ||
|
|
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| import com.jme3.app.SimpleApplication; | ||
| import com.jme3.asset.TextureKey; | ||
| import com.jme3.font.BitmapText; | ||
| import com.jme3.light.AmbientLight; | ||
| import com.jme3.light.DirectionalLight; | ||
| import com.jme3.material.Material; | ||
| import com.jme3.material.TechniqueDef.LightMode; | ||
| import com.jme3.math.ColorRGBA; | ||
| import com.jme3.math.Vector3f; | ||
| import com.jme3.scene.Node; | ||
| import com.jme3.scene.Spatial; | ||
| import com.jme3.scene.plugins.gltf.GltfModelKey; | ||
| import com.jme3.system.AppSettings; | ||
| import com.jme3.util.mikktspace.MikktspaceTangentGenerator; | ||
|
|
||
| /** | ||
| * This test cycles through a model exported in different formats and with different materials with tangents | ||
| * generated in different ways. The normal map should look correct in all cases. Refer to | ||
| * https://github.com/KhronosGroup/glTF-Sample-Models/tree/master/2.0/NormalTangentMirrorTest for details on | ||
| * the correct result and debugging. | ||
| */ | ||
| public class TestNormalMappingConsistency extends SimpleApplication { | ||
| Node probeNode; | ||
| DirectionalLight light; | ||
| BitmapText materialTxt; | ||
| BitmapText modelTxt; | ||
| boolean flipTextures = false; | ||
| float t = -1; | ||
| int modelType = 0; | ||
| int materialType = 0; | ||
| Spatial loadedSpatial; | ||
|
|
||
| final int maxModels = 4; | ||
| final int maxMaterials = 3; | ||
|
|
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| public static void main(String[] args) { | ||
| AppSettings sett = new AppSettings(true); | ||
| sett.setWidth(1024); | ||
| sett.setHeight(768); | ||
| TestNormalMappingConsistency app = new TestNormalMappingConsistency(); | ||
| app.setSettings(sett); | ||
| app.start(); | ||
| } | ||
|
|
||
| @Override | ||
| public void simpleInitApp() { | ||
| setPauseOnLostFocus(false); | ||
| flyCam.setMoveSpeed(20); | ||
| viewPort.setBackgroundColor(new ColorRGBA().setAsSrgb(0.2f, 0.2f, 0.2f, 1.0f)); | ||
| probeNode = (Node) assetManager.loadModel("Scenes/defaultProbe.j3o"); | ||
| rootNode.attachChild(probeNode); | ||
|
|
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| probeNode.addLight(new AmbientLight(ColorRGBA.Gray)); | ||
| light = new DirectionalLight(new Vector3f(-1, -1, -1), ColorRGBA.White); | ||
| rootNode.addLight(light); | ||
|
|
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| modelTxt = new BitmapText(guiFont); | ||
| modelTxt.setSize(guiFont.getCharSet().getRenderedSize()); | ||
| modelTxt.setLocalTranslation(0, 700, 0); | ||
| guiNode.attachChild(modelTxt); | ||
|
|
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| materialTxt = new BitmapText(guiFont); | ||
| materialTxt.setSize(guiFont.getCharSet().getRenderedSize()); | ||
| materialTxt.setLocalTranslation(300, 700, 0); | ||
| guiNode.attachChild(materialTxt); | ||
| } | ||
|
|
||
| @Override | ||
| public void simpleUpdate(float tpf) { | ||
| if (t == -1 || t > 5) { | ||
| t = 0; | ||
| loadModel(new Vector3f(0, 0, 0), 3, modelType, materialType); | ||
| materialType++; | ||
| if (materialType >= maxMaterials) { | ||
| materialType = 0; | ||
| modelType++; | ||
| if (modelType >= maxModels) { | ||
| modelType = 0; | ||
| } | ||
| } | ||
| } | ||
| t += tpf; | ||
|
|
||
| } | ||
|
|
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| private void loadModel(Vector3f offset, float scale, int modelType, int materialType) { | ||
| if (loadedSpatial != null) { | ||
| loadedSpatial.removeFromParent(); | ||
| } | ||
|
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|
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| if (modelType == 0) loadedSpatial = loadGltf(); | ||
| else if (modelType == 1) loadedSpatial = loadGltfGen(); | ||
| else if (modelType == 2) loadedSpatial = loadOgre(); | ||
| else if (modelType == 3) loadedSpatial = loadOgreGen(); | ||
|
|
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| loadedSpatial.scale(scale); | ||
| loadedSpatial.move(offset); | ||
| if (materialType == 0) loadedSpatial.setMaterial(createPBRLightingMat()); | ||
| else if (materialType == 1) loadedSpatial.setMaterial(createSPLightingMat()); | ||
| else if (materialType == 2) loadedSpatial.setMaterial(createLightingMat()); | ||
| probeNode.attachChild(loadedSpatial); | ||
| } | ||
|
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| private Spatial loadGltf() { | ||
| GltfModelKey k = new GltfModelKey("jme3test/normalmapCompare/NormalTangentMirrorTest.gltf"); | ||
| Spatial sp = assetManager.loadModel(k); | ||
| modelTxt.setText("GLTF"); | ||
| return sp; | ||
| } | ||
|
|
||
| private Spatial loadGltfGen() { | ||
| GltfModelKey k = new GltfModelKey("jme3test/normalmapCompare/NormalTangentMirrorTest.gltf"); | ||
| Spatial sp = assetManager.loadModel(k); | ||
| MikktspaceTangentGenerator.generate(loadedSpatial); | ||
| modelTxt.setText("GLTF - regen tg"); | ||
| return sp; | ||
| } | ||
|
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| private Spatial loadOgre() { | ||
| GltfModelKey k = new GltfModelKey("jme3test/normalmapCompare/ogre/NormalTangentMirrorTest.scene"); | ||
| Spatial sp = assetManager.loadModel(k); | ||
| modelTxt.setText("OGRE"); | ||
| return sp; | ||
| } | ||
|
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| private Spatial loadOgreGen() { | ||
| GltfModelKey k = new GltfModelKey("jme3test/normalmapCompare/ogre/NormalTangentMirrorTest.scene"); | ||
| Spatial sp = assetManager.loadModel(k); | ||
| MikktspaceTangentGenerator.generate(loadedSpatial); | ||
| modelTxt.setText("OGRE - regen tg"); | ||
| return sp; | ||
| } | ||
|
|
||
| private Material createPBRLightingMat() { | ||
| renderManager.setPreferredLightMode(LightMode.SinglePassAndImageBased); | ||
| Material mat = new Material(assetManager, "Common/MatDefs/Light/PBRLighting.j3md"); | ||
| mat.setTexture("BaseColorMap", assetManager.loadTexture(new TextureKey( | ||
| "jme3test/normalmapCompare/NormalTangentMirrorTest_BaseColor.png", flipTextures))); | ||
| mat.setTexture("NormalMap", assetManager.loadTexture( | ||
| new TextureKey("jme3test/normalmapCompare/NormalTangentTest_Normal.png", flipTextures))); | ||
| mat.setFloat("NormalType", 1); | ||
| materialTxt.setText("PBR Lighting"); | ||
| return mat; | ||
| } | ||
|
|
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| private Material createSPLightingMat() { | ||
| renderManager.setPreferredLightMode(LightMode.SinglePass); | ||
| Material mat = new Material(assetManager, "Common/MatDefs/Light/Lighting.j3md"); | ||
| mat.setTexture("DiffuseMap", assetManager.loadTexture(new TextureKey( | ||
| "jme3test/normalmapCompare/NormalTangentMirrorTest_BaseColor.png", flipTextures))); | ||
| mat.setTexture("NormalMap", assetManager.loadTexture( | ||
| new TextureKey("jme3test/normalmapCompare/NormalTangentTest_Normal.png", flipTextures))); | ||
| mat.setFloat("NormalType", 1); | ||
| materialTxt.setText("SP Lighting"); | ||
| return mat; | ||
| } | ||
|
|
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| private Material createLightingMat() { | ||
| renderManager.setPreferredLightMode(LightMode.MultiPass); | ||
| Material mat = new Material(assetManager, "Common/MatDefs/Light/Lighting.j3md"); | ||
| mat.setTexture("DiffuseMap", assetManager.loadTexture(new TextureKey( | ||
| "jme3test/normalmapCompare/NormalTangentMirrorTest_BaseColor.png", flipTextures))); | ||
| mat.setTexture("NormalMap", assetManager.loadTexture( | ||
| new TextureKey("jme3test/normalmapCompare/NormalTangentTest_Normal.png", flipTextures))); | ||
| materialTxt.setText("Lighting"); | ||
| mat.setFloat("NormalType", 1); | ||
|
|
||
| return mat; | ||
| } | ||
|
|
||
| } |
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