Unity烘焙材质到单一贴图的脚本.doc

本文由麦可网收集整理，转载请注明出处。Unity烘焙材质到单一贴图的脚本这个脚本由 CocoaChina 版主 “四角钱” 分享，可以将复杂的材质（比如有法线贴图的材质）进行烘焙，转变为单一的贴图。可用来将 Unity 的游戏移植到移动平台时候使用。请将脚本放 Editor 文件夹里，使用时选择一个 Material 材质，然后在菜单种Custom/Bake Material打开并调整照明和其他参数，点击Bake按钮就会生成一个单一的贴图。class BakeMaterialSettingsprivate static var kEditorPrefsName = BakeMaterialSettings;static var kBakingLayerShouldBeUnusedInScene = 30;static var kStandardTexNames = new Array (_MainTex, _BumpMap, _Detail, _ParallaxMap, _Parallax);var bakeAlpha = false;var bakeMainTexAsWhite = false;var minTextureResolution = 8;var maxTextureResolution = 2048;var emptyScene = false;var useCustomLights = false;var ambient = Color.black;static var kLights = 3;var enableLight = new booleankLights;var colorLight = new ColorkLights;var dirLight = new Vector2kLights;function BakeMaterialSettings ()Load ();function Load ()bakeAlpha = EditorPrefs.GetBool(kEditorPrefsName + .bakeAlpha);bakeMainTexAsWhite = EditorPrefs.GetBool(kEditorPrefsName + .bakeMainTexAsWhite);minTextureResolution = EditorPrefs.GetInt(kEditorPrefsName + .minTextureResolution, 8);maxTextureResolution = EditorPrefs.GetInt(kEditorPrefsName + .maxTextureResolution, 2048);emptyScene = EditorPrefs.GetBool(kEditorPrefsName + .emptyScene);useCustomLights = EditorPrefs.GetBool(kEditorPrefsName + .useCustomLights);ambient.r = EditorPrefs.GetFloat(kEditorPrefsName + .ambient.r);ambient.g = EditorPrefs.GetFloat(kEditorPrefsName + .ambient.g);ambient.b = EditorPrefs.GetFloat(kEditorPrefsName + .ambient.b);ambient.a = EditorPrefs.GetFloat(kEditorPrefsName + .ambient.a, 1.0f);for (var q = 0; q kLights; +q)enableLightq = EditorPrefs.GetBool(kEditorPrefsName + .enableLight + q);colorLightq.r = EditorPrefs.GetFloat(kEditorPrefsName + .color.r + q, 0.5f);colorLightq.g = EditorPrefs.GetFloat(kEditorPrefsName + .color.g + q, 0.5f);colorLightq.b = EditorPrefs.GetFloat(kEditorPrefsName + .color.b + q, 0.5f);colorLightq.a = EditorPrefs.GetFloat(kEditorPrefsName + .color.a + q, 1.0f);dirLightq.x = EditorPrefs.GetFloat(kEditorPrefsName + .dir.x + q);dirLightq.y = EditorPrefs.GetFloat(kEditorPrefsName + .dir.y + q);function Save ()EditorPrefs.SetBool(kEditorPrefsName + .bakeAlpha, bakeAlpha);EditorPrefs.SetBool(kEditorPrefsName + .bakeMainTexAsWhite, bakeMainTexAsWhite);EditorPrefs.SetInt(kEditorPrefsName + .minTextureResolution, minTextureResolution);EditorPrefs.SetInt(kEditorPrefsName + .maxTextureResolution, maxTextureResolution);EditorPrefs.GetBool(kEditorPrefsName + .emptyScene, emptyScene);EditorPrefs.SetBool(kEditorPrefsName + .useCustomLights, useCustomLights);EditorPrefs.SetFloat(kEditorPrefsName + .ambient.r, ambient.r);EditorPrefs.SetFloat(kEditorPrefsName + .ambient.g, ambient.g);EditorPrefs.SetFloat(kEditorPrefsName + .ambient.b, ambient.b);EditorPrefs.SetFloat(kEditorPrefsName + .ambient.a, ambient.a);for (var q = 0; q kLights; +q)EditorPrefs.SetBool(kEditorPrefsName + .enableLight + q, enableLightq);EditorPrefs.SetFloat(kEditorPrefsName + .color.r + q, colorLightq.r);EditorPrefs.SetFloat(kEditorPrefsName + .color.g + q, colorLightq.g);EditorPrefs.SetFloat(kEditorPrefsName + .color.b + q, colorLightq.b);EditorPrefs.SetFloat(kEditorPrefsName + .color.a + q, colorLightq.a);EditorPrefs.SetFloat(kEditorPrefsName + .dir.x + q, dirLightq.x);EditorPrefs.SetFloat(kEditorPrefsName + .dir.y + q, dirLightq.y);class BakeMaterial extends EditorWindowprivate static var kMateriBakeNodeName = _MateriaBakeSetup;private static var kWindowMinSize = Vector2 (300, 386);private static var settings : BakeMaterialSettings;private static var visible : boolean = false;private var camera : GameObject;private var plane : GameObject;private var previewTexture : Texture;private var lights : GameObject = new GameObjectBakeMaterialSettings.kLights;private var stateChanged = false;private var texViewScrollPosition = Vector2.zero;private var lastMaterial : Material;private var originalScene = ;private var scheduleBakeOnNextUpdate = false;private function SetupScene ()DestroyScene ();var oldGo = GameObject.Find(kMateriBakeNodeName);if (oldGo)DestroyImmediate (oldGo);camera = new GameObject (kMateriBakeNodeName, Camera);plane = GameObject.CreatePrimitive (PrimitiveType.Plane);var cam = camera;cam.camera.backgroundColor = Color.black;cam.camera.clearFlags = CameraClearFlags.SolidColor;cam.camera.orthographic = true;cam.camera.orthographicSize = 5.0;cam.camera.cullingMask = 1 settings.kBakingLayerShouldBeUnusedInScene;plane.transform.parent = cam.transform;plane.transform.position = Vector3.forward * 10.0;plane.transform.rotation = Quaternion.Euler (0, 0, 180) * Quaternion.Euler (-90, 0, 0);plane.layer = settings.kBakingLayerShouldBeUnusedInScene;for (var l in lights)l = new GameObject (Light, Light);l.light.type = LightType.Directional;l.light.cullingMask = 1 settings.kBakingLayerShouldBeUnusedInScene;l.transform.parent = cam.transform;l.active = false;private function UpdateScene (m : Material)for (q = 0; q settings.kLights; +q)lightsq.active = settings.useCustomLights & settings.enableLightq;lightsq.light.color = settings.colorLightq;lightsq.transform.rotation = Quaternion.AngleAxis(settings.dirLightq.x, Vector3.up) *Quaternion.AngleAxis(settings.dirLightq.y, Vector3.right);if (settings.useCustomLights)RenderSettings.ambientLight = settings.ambient;else if (settings.emptyScene)RenderSettings.ambientLight = Color.white;plane.renderer.material = m;private function DestroyScene ()GameObject.DestroyImmediate (camera);GameObject.DestroyImmediate (plane);GameObject.DestroyImmediate (previewTexture);function UpdateMaterialPreview (m : Material) : RenderTextureif (!m)return;var saveAmbientLight = RenderSettings.ambientLight;var saveMainTexture = m.mainTexture;if (settings.bakeMainTexAsWhite)m.mainTexture = null;/ setupif (!camera)SetupScene ();camera.SetActiveRecursively(true);UpdateScene (m);var res = FindLargestTextureResolution (plane.renderer.sharedMaterial, settings.minTextureResolution, settings.maxTextureResolution);var rt = RenderCameraToRenderTexture (camera.camera, res.x, res.y);/ restorecamera.SetActiveRecursively(false);RenderSettings.ambientLight = saveAmbientLight;m.mainTexture = saveMainTexture;previewTexture = rt;return rt;function CaptureMaterial(m : Material)var matAssetPath = AssetDatabase.GetAssetPath (m);var assetPath = System.IO.Path.Combine (System.IO.Path.GetDirectoryName (matAssetPath), System.IO.Path.GetFileNameWithoutExtension (matAssetPath);var rt = UpdateMaterialPreview (m);RenderTextureToPNG (rt, settings.bakeAlpha, assetPath + .png);function OnEnable ()if (!settings)settings = new BakeMaterialSettings ();SetupScene ();visible = true;function OnDisable ()DestroyScene ();settings.Save ();visible = false;static function GetTargetMaterial () : Materialreturn EditorUtility.InstanceIDToObject (Selection.activeInstanceID) as Material;function OnSelectionChange ()Repaint ();function Update ()var rebuildScene = false;if (scheduleBakeOnNextUpdate)Bake ();scheduleBakeOnNextUpdate = false;rebuildScene = true;if (originalScene = & EditorApplication.currentScene = )settings.emptyScene = true;if (settings.emptyScene & originalScene = & EditorApplication.currentScene != )DestroyScene ();if (EditorApplication.SaveCurrentSceneIfUserWantsTo ()originalScene = EditorApplication.currentScene;EditorApplication.NewScene ();elsesettings.emptyScene = false;rebuildScene = true; else if (!settings.emptyScene & originalScene != )EditorApplication.OpenScene (originalScene);rebuildScene = true;originalScene = ;if (rebuildScene)SetupScene ();if (rebuildScene | stateChanged | !settings.emptyScene)UpdateMaterialPreview (lastMaterial);Repaint ();stateChanged = false;function OnGUI ()var material = GetTargetMaterial ();if (lastMaterial != material)UpdateMaterialPreview (material);if (material)lastMaterial = material;EditorGUILayout.BeginHorizontal();EditorGUILayout.BeginVertical(GUILayout.MaxWidth(200);if (!(originalScene = & EditorApplication.currentScene = )settings.emptyScene = !EditorGUILayout.BeginToggleGroup(Scene ligthing, !settings.emptyScene);EditorGUILayout.EndToggleGroup();settings.useCustomLights = EditorGUILayout.BeginToggleGroup(Custom lighting, settings.useCustomLights);if (settings.useCustomLights)EditorGUI.indentLevel = 1;settings.ambient = EditorGUILayout.ColorField(Ambient, settings.ambient);for (var q = 0; q settings.kLights; +q)settings.enableLightq = EditorGUILayout.BeginToggleGroup(Light, settings.enableLightq);EditorGUI.indentLevel = 2;settings.colorLightq = EditorGUILayout.ColorField(Color, settings.colorLightq);settings.dirLightq = EditorGUILayout.Vector2Field(Direction, settings.dirLightq);EditorGUILayout.EndToggleGroup();EditorGUI.indentLevel = 0;EditorGUILayout.EndToggleGroup();settings.bakeAlpha = EditorGUILayout.Toggle(Bake Alpha, settings.bakeAlpha);settings.bakeMainTexAsWhite = !EditorGUILayout.Toggle(MainTex, !settings.bakeMainTexAsWhite);settings.minTextureResolution = EditorGUILayout.IntField(Min Resolution, settings.minTextureResolution);settings.maxTextureResolution = EditorGUILayout.IntField(Max Resolution, settings.maxTextureResolution);settings.minTextureResolution = Mathf.Max(2, settings.minTextureResolution);settings.maxTextureResolution = Mathf.Max(settings.minTextureResolution, settings.maxTextureResolution);EditorGUILayout.BeginHorizontal();if (GUILayout.Button(Bake)CaptureMaterial (lastMaterial);if (GUILayout.Button(Bake Selected)scheduleBakeOnNextUpdate = true;EditorGUILayout.EndHorizontal();EditorGUILayout.EndVertical();texViewScrollPosition = EditorGUILayout.BeginScrollView (texViewScrollPosition);var r = GUILayoutUtility.GetAspectRect(1.0f);if (previewTexture)EditorGUI.DrawPreviewTexture(r, previewTexture);EditorGUILayout.EndScrollView(); EditorGUILayout.EndHorizontal();if (GUI.changed)stateChanged = true;MenuItem(Custom/Bake Material ., false, 5)static function CreateBakeEditor()var window = EditorWindow.GetWindow(BakeMaterial);window.title = Bake Material;window.minSize = kWindowMinSize;window.Show();MenuItem(Custom/Bake Selected Materials, false, 4)static function Bake()var instanceIDs = Selection.instanceIDs;var currentScene = EditorApplication.currentScene;var wasAlreadyVisible = BakeMaterial.visible;var window = EditorWindow.GetWindow(BakeMaterial);if (window.settings.emptyScene)if (!EditorApplication.SaveCurrentSceneIfUserWantsTo ()return;EditorApplication.NewScene ();window.SetupScene ();for (var i in instanceIDs)var m : Material = EditorUtility.InstanceIDToObject (i) as Material;if (m)window.CaptureMaterial (m);window.DestroyScene ();if (window.settings.emptyScene & currentScene)EditorApplication.OpenScene (currentScene);if (!wasAlreadyVisible)window.Close ();static function FindLargestTextureResolution (m : Ma