public void LoadFramesFromAsset(ImageSequence asset)
 {
     inputSequence.frames.Clear();
     if (asset.inputFrameGUIDs != null && asset.inputFrameGUIDs.Count > 0)
     {
         int count = asset.inputFrameGUIDs.Count;
         int i     = 1;
         foreach (string guid in asset.inputFrameGUIDs)
         {
             VFXToolboxGUIUtility.DisplayProgressBar("Image Sequencer", "Loading Textures (" + i + "/" + count + ")", (float)i / count, 0.1f);
             string    path = AssetDatabase.GUIDToAssetPath(guid);
             Texture2D t    = AssetDatabase.LoadAssetAtPath <Texture2D>(path);
             if (t != null)
             {
                 inputSequence.frames.Add(new ProcessingFrame(t));
             }
             else
             {
                 inputSequence.frames.Add(ProcessingFrame.Missing);
             }
             i++;
         }
         VFXToolboxGUIUtility.ClearProgressBar();
     }
 }
        private bool HandleDropData()
        {
            if(m_CurrentAsset == null)
                return false;

            if(sidePanelViewMode == SidePanelMode.InputFrames && DragAndDrop.paths.Length > 0)
            {
                DragAndDrop.visualMode = DragAndDropVisualMode.Link;
                if( Event.current.type == EventType.DragExited)
                {
                    List<string> texturePaths = new List<string>();
                    foreach(string path in DragAndDrop.paths)
                    {
                        if (VFXToolboxUtility.IsDirectory(path))
                            texturePaths.AddRange(VFXToolboxUtility.GetAllTexturesInPath(path));
                        else
                        {
                            VFXToolboxGUIUtility.DisplayProgressBar("Image Sequencer", "Discovering Assets...", 0.5f);
                            Texture2D t = AssetDatabase.LoadAssetAtPath<Texture2D>(path);
                            if(t != null)
                                texturePaths.Add(path);
                        }
                    }
                    AddInputFrame(m_InputFramesReorderableList, texturePaths);
                    VFXToolboxGUIUtility.ClearProgressBar();
                    return true;
                }
            }
            return false;
        }
Пример #3
0
        private void FindProperValues(float threshold, ref SerializedProperty top, ref SerializedProperty bottom, ref SerializedProperty left, ref SerializedProperty right)
        {
            int width  = InputSequence.width;
            int height = InputSequence.height;

            int minX = width;
            int maxX = 0;
            int minY = height;
            int maxY = 0;

            Color[]       colors;
            RenderTexture tempRT = RenderTexture.GetTemporary(width, height, 0, RenderTextureFormat.ARGBHalf, RenderTextureReadWrite.Linear);

            for (int i = 0; i < InputSequence.frames.Count; i++)
            {
                ProcessingFrame f = InputSequence.frames[i];

                VFXToolboxGUIUtility.DisplayProgressBar("Crop processor", "Evaluating closest bound (Frame #" + i + " on " + InputSequence.frames.Count + "...)", (float)i / InputSequence.frames.Count);
                if (InputSequence.processor != null)
                {
                    f.Process();
                    colors = VFXToolboxUtility.ReadBack(f.texture as RenderTexture);
                }
                else
                {
                    Graphics.Blit(f.texture, tempRT);
                    colors = VFXToolboxUtility.ReadBack(tempRT);
                }

                // Check frame
                for (int j = 0; j < colors.Length; j++)
                {
                    int x = j % width;
                    int y = j / width;
                    if (colors[j].a >= threshold)
                    {
                        minX = Mathf.Min(minX, x);
                        maxX = Mathf.Max(maxX, x);
                        minY = Mathf.Min(minY, y);
                        maxY = Mathf.Max(maxY, y);
                    }
                }
            }
            VFXToolboxGUIUtility.ClearProgressBar();

            bottom.intValue = minY;
            top.intValue    = height - maxY - 1;
            left.intValue   = minX;
            right.intValue  = width - maxX - 1;

            RenderTexture.ReleaseTemporary(tempRT);
        }
        public void LoadAsset(ImageSequence asset)
        {
            m_CurrentAsset = asset;

            m_InputFramesReorderableList = null;
            m_ProcessorsReorderableList  = null;
            m_LockedPreviewProcessor     = null;
            m_CurrentProcessingNode      = null;

            // Free resources if any
            if (m_ProcessingNodeStack != null)
            {
                m_ProcessingNodeStack.Dispose();
            }

            InitializeGUI();

            if (m_CurrentAsset != null)
            {
                m_ProcessingNodeStack = new ProcessingNodeStack(new ProcessingFrameSequence(null), this);

                m_CurrentAssetSerializedObject = new SerializedObject(m_CurrentAsset);

                VFXToolboxGUIUtility.DisplayProgressBar("Image Sequencer", "Loading asset....", 0.0f);

                m_LockedPreviewProcessor = null;

                VFXToolboxGUIUtility.DisplayProgressBar("Image Sequencer", "Loading Frames", 0.333333f);

                m_ProcessingNodeStack.LoadFramesFromAsset(m_CurrentAsset);
                UpdateInputTexturesHash();

                m_InputFramesReorderableList = new ReorderableList(m_ProcessingNodeStack.inputSequence.frames, typeof(Texture2D), true, false, true, true);
                m_InputFramesReorderableList.onAddCallback       = AddInputFrame;
                m_InputFramesReorderableList.onRemoveCallback    = RemoveInputFrame;
                m_InputFramesReorderableList.onReorderCallback   = ReorderInputFrame;
                m_InputFramesReorderableList.drawElementCallback = DrawInputFrameRListElement;
                m_InputFramesReorderableList.onSelectCallback    = SelectInputFrameRListElement;

                VFXToolboxGUIUtility.DisplayProgressBar("Image Sequencer", "Loading Processors", 0.66666f);

                ImageSequence inheritedSettingReference = m_CurrentAsset;

                // Loading other settings if inheriting settings
                if (m_CurrentAsset.inheritSettingsReference != null)
                {
                    var dependencyList = new List <ImageSequence>();
                    var referenceAsset = FindSettingsReference(m_CurrentAsset.inheritSettingsReference, ref dependencyList);
                    if (referenceAsset == null)
                    {
                        Debug.LogWarning("Dependency Loop detected, ignoring using external settings");
                        m_IgnoreInheritSettings = true;
                    }
                    else
                    {
                        inheritedSettingReference = referenceAsset;
                        m_IgnoreInheritSettings   = false;
                    }
                }

                m_ProcessingNodeStack.LoadProcessorsFromAsset(inheritedSettingReference);
                m_ProcessorDataProvider = new ProcessorDataProvider(m_ProcessingNodeStack, m_CurrentAsset);

                // Construct the RList
                if (m_CurrentAsset.inheritSettingsReference == null)
                {
#if UNITY_2020_1_OR_NEWER
                    m_ProcessorsReorderableList = new ReorderableList(m_CurrentAsset.processorInfos, typeof(ProcessorInfo), true, false, true, true);
#else
                    m_ProcessorsReorderableList = new ReorderableList(m_CurrentAssetSerializedObject, m_CurrentAssetSerializedObject.FindProperty("processorInfos"), true, false, true, true);
#endif
                    m_ProcessorsReorderableList.onAddCallback       = ShowAddProcessorMenu;
                    m_ProcessorsReorderableList.onRemoveCallback    = MenuRemoveProcessor;
                    m_ProcessorsReorderableList.onReorderCallback   = ReorderProcessor;
                    m_ProcessorsReorderableList.onSelectCallback    = MenuSelectProcessor;
                    m_ProcessorsReorderableList.drawElementCallback = DrawRListProcessorElement;
                    m_SettingsReferenceSerializedObject             = null;
                }
                else
                {
                    m_SettingsReferenceSerializedObject             = new SerializedObject(inheritedSettingReference);
                    m_ProcessorsReorderableList                     = new ReorderableList(m_SettingsReferenceSerializedObject, m_SettingsReferenceSerializedObject.FindProperty("processorInfos"), false, false, false, false);
                    m_ProcessorsReorderableList.drawElementCallback = DrawRListPreviewProcessorElement;
                    m_ProcessorsReorderableList.onSelectCallback    = MenuSelectProcessor;
                }

                m_PreviewCanvas.sequence = m_ProcessingNodeStack.inputSequence;
                if (m_PreviewCanvas.sequence.length > 0)
                {
                    m_PreviewCanvas.currentFrameIndex = 0;
                }
                else
                {
                    m_PreviewCanvas.currentFrameIndex = -1;
                }

                VFXToolboxGUIUtility.DisplayProgressBar("Image Sequencer", "Finalizing...", 1.0f);

                m_ProcessingNodeStack.InvalidateAll();
                RestoreProcessorView();

                EditorUtility.ClearProgressBar();
            }
        }
Пример #5
0
        public string ExportToFile(bool useCurrentFileName)
        {
            string path;

            if (useCurrentFileName)
            {
                path = m_CurrentAsset.exportSettings.fileName;
            }
            else
            {
                string title = "Save Texture, use # for frame numbering.";
                string defaultFileName, extension, message;
                switch (m_CurrentAsset.exportSettings.exportMode)
                {
                case ImageSequence.ExportMode.EXR:
                    defaultFileName = "Frame_#.exr";
                    extension       = "exr";
                    message         = "Save as EXR Texture";
                    break;

                case ImageSequence.ExportMode.Targa:
                    defaultFileName = "Frame_#.tga";
                    extension       = "tga";
                    message         = "Save as TGA Texture";
                    break;

                case ImageSequence.ExportMode.PNG:
                    defaultFileName = "Frame_#.png";
                    extension       = "png";
                    message         = "Save as PNG Texture";
                    break;

                default: return(null);
                }

                path = EditorUtility.SaveFilePanelInProject(title, defaultFileName, extension, message);
                if (path == null || path == "")
                {
                    return("");
                }
            }

            int frameCount = m_processorStack.outputSequence.length;

            if (frameCount > 1 && !Path.GetFileNameWithoutExtension(path).Contains("#"))
            {
                if (!EditorUtility.DisplayDialog("VFX Toolbox", "You are currently exporting a sequence of images with no # in filename for numbering, do you want to add _# as a suffix of the filename?", "Add Postfix", "Cancel Export"))
                {
                    return("");
                }

                string newpath = Path.GetDirectoryName(path) + "\\" + Path.GetFileNameWithoutExtension(path) + "_#" + Path.GetExtension(path);
                path = newpath;
            }

            ImageSequence.ExportSettings settings = m_CurrentAsset.exportSettings;
            bool bCanceled = false;

            try
            {
                int i = 1;
                foreach (ProcessingFrame frame in m_processorStack.outputSequence.frames)
                {
                    if (VFXToolboxGUIUtility.DisplayProgressBar("Image Sequencer", "Exporting Frame #" + i + "/" + frameCount, (float)i / frameCount, 0, true))
                    {
                        bCanceled = true;
                        break;
                    }

                    Color[] inputs;

                    if (frame.texture is Texture2D)
                    {
                        RenderTexture temp = RenderTexture.GetTemporary(frame.texture.width, frame.texture.height, 0, RenderTextureFormat.ARGBHalf);
                        Graphics.Blit((Texture2D)frame.texture, temp);
                        inputs = ReadBack(temp);
                    }
                    else // frame.texture is RenderTexture
                    {
                        frame.Process();
                        inputs = ReadBack((RenderTexture)frame.texture);
                    }

                    string fileName = GetNumberedFileName(path, i, frameCount);

                    switch (m_CurrentAsset.exportSettings.exportMode)
                    {
                    case ImageSequence.ExportMode.EXR:
                        MiniEXR.MiniEXR.MiniEXRWrite(fileName, (ushort)frame.texture.width, (ushort)frame.texture.height, settings.exportAlpha, inputs, true);
                        break;

                    case ImageSequence.ExportMode.Targa:
                        MiniTGA.MiniTGA.MiniTGAWrite(fileName, (ushort)frame.texture.width, (ushort)frame.texture.height, settings.exportAlpha, inputs);
                        break;

                    case ImageSequence.ExportMode.PNG:

                        byte[] bytes;
                        if (m_processorStack.outputSequence.processor != null)
                        {
                            RenderTexture backup  = RenderTexture.active;
                            Texture2D     texture = new Texture2D(frame.texture.width, frame.texture.height, TextureFormat.RGBA32, settings.generateMipMaps, !settings.sRGB);
                            RenderTexture.active = (RenderTexture)frame.texture;
                            RenderTexture ldrOutput = RenderTexture.GetTemporary(frame.texture.width, frame.texture.height, 0, RenderTextureFormat.ARGB32, settings.sRGB? RenderTextureReadWrite.sRGB: RenderTextureReadWrite.Linear);
                            GL.sRGBWrite = (QualitySettings.activeColorSpace == ColorSpace.Linear);
                            Graphics.Blit(frame.texture, ldrOutput);
                            RenderTexture.active = ldrOutput;
                            texture.ReadPixels(new Rect(0, 0, frame.texture.width, frame.texture.height), 0, 0);
                            bytes = texture.EncodeToPNG();
                            RenderTexture.active = backup;
                        }
                        else
                        {
                            bytes = (frame.texture as Texture2D).EncodeToPNG();
                        }
                        File.WriteAllBytes(fileName, bytes);
                        break;

                    default: return(null);
                    }

                    AssetDatabase.Refresh();

                    TextureImporter importer = (TextureImporter)TextureImporter.GetAtPath(fileName);
                    importer.wrapMode   = m_CurrentAsset.exportSettings.wrapMode;
                    importer.filterMode = m_CurrentAsset.exportSettings.filterMode;
                    switch (m_CurrentAsset.exportSettings.dataContents)
                    {
                    case ImageSequence.DataContents.Color:
                        importer.textureType = TextureImporterType.Default;
                        break;

                    case ImageSequence.DataContents.NormalMap:
                        importer.textureType        = TextureImporterType.NormalMap;
                        importer.convertToNormalmap = false;
                        break;

                    case ImageSequence.DataContents.NormalMapFromGrayscale:
                        importer.textureType        = TextureImporterType.NormalMap;
                        importer.convertToNormalmap = true;
                        break;

                    case ImageSequence.DataContents.Sprite:
                        importer.textureType      = TextureImporterType.Sprite;
                        importer.spriteImportMode = SpriteImportMode.Multiple;
                        importer.spritesheet      = GetSpriteMetaData(frame, m_processorStack.outputSequence.numU, m_processorStack.outputSequence.numV);
                        break;
                    }
                    importer.mipmapEnabled = m_CurrentAsset.exportSettings.generateMipMaps;

                    switch (m_CurrentAsset.exportSettings.exportMode)
                    {
                    case ImageSequence.ExportMode.Targa:
                        importer.sRGBTexture        = m_CurrentAsset.exportSettings.sRGB;
                        importer.alphaSource        = m_CurrentAsset.exportSettings.exportAlpha ? TextureImporterAlphaSource.FromInput : TextureImporterAlphaSource.None;
                        importer.textureCompression = m_CurrentAsset.exportSettings.compress ? TextureImporterCompression.Compressed : TextureImporterCompression.Uncompressed;
                        break;

                    case ImageSequence.ExportMode.EXR:
                        importer.sRGBTexture        = false;
                        importer.alphaSource        = (m_CurrentAsset.exportSettings.exportAlpha && !m_CurrentAsset.exportSettings.compress) ? TextureImporterAlphaSource.FromInput : TextureImporterAlphaSource.None;
                        importer.textureCompression = m_CurrentAsset.exportSettings.compress ? TextureImporterCompression.CompressedHQ : TextureImporterCompression.Uncompressed;
                        break;

                    case ImageSequence.ExportMode.PNG:
                        importer.sRGBTexture        = m_CurrentAsset.exportSettings.sRGB;
                        importer.alphaSource        = m_CurrentAsset.exportSettings.exportAlpha ? TextureImporterAlphaSource.FromInput : TextureImporterAlphaSource.None;
                        importer.textureCompression = m_CurrentAsset.exportSettings.compress ? TextureImporterCompression.Compressed : TextureImporterCompression.Uncompressed;
                        break;
                    }

                    AssetDatabase.ImportAsset(fileName, ImportAssetOptions.ForceUpdate);

                    // Separate Alpha
                    if (m_CurrentAsset.exportSettings.exportSeparateAlpha)
                    {
                        string alphaFilename = fileName.Substring(0, fileName.Length - 4) + "_alpha.tga";
                        // build alpha
                        for (int k = 0; k < inputs.Length; k++)
                        {
                            float a = inputs[k].a;
                            inputs[k] = new Color(a, a, a, a);
                        }
                        MiniTGA.MiniTGA.MiniTGAWrite(alphaFilename, (ushort)frame.texture.width, (ushort)frame.texture.height, false, inputs);

                        AssetDatabase.Refresh();

                        TextureImporter alphaImporter = (TextureImporter)TextureImporter.GetAtPath(alphaFilename);

                        if (m_CurrentAsset.exportSettings.dataContents == ImageSequence.DataContents.Sprite)
                        {
                            alphaImporter.textureType      = TextureImporterType.Sprite;
                            alphaImporter.spriteImportMode = SpriteImportMode.Multiple;
                            alphaImporter.spritesheet      = GetSpriteMetaData(frame, m_processorStack.outputSequence.numU, m_processorStack.outputSequence.numV);
                            alphaImporter.alphaSource      = TextureImporterAlphaSource.None;
                        }
                        else
                        {
                            alphaImporter.textureType = TextureImporterType.SingleChannel;
                            alphaImporter.alphaSource = TextureImporterAlphaSource.FromGrayScale;
                        }

                        alphaImporter.wrapMode           = m_CurrentAsset.exportSettings.wrapMode;
                        alphaImporter.filterMode         = m_CurrentAsset.exportSettings.filterMode;
                        alphaImporter.sRGBTexture        = false;
                        alphaImporter.mipmapEnabled      = m_CurrentAsset.exportSettings.generateMipMaps;
                        alphaImporter.textureCompression = m_CurrentAsset.exportSettings.compress ? TextureImporterCompression.Compressed : TextureImporterCompression.Uncompressed;

                        AssetDatabase.ImportAsset(alphaFilename, ImportAssetOptions.ForceUpdate);
                    }

                    i++;
                }
            }
            catch (System.Exception e)
            {
                VFXToolboxGUIUtility.ClearProgressBar();
                Debug.LogError(e.Message);
            }

            VFXToolboxGUIUtility.ClearProgressBar();

            if (bCanceled)
            {
                return("");
            }
            else
            {
                return(path);
            }
        }
        public string ExportToFile(bool useCurrentFileName)
        {
            bool   bIsInsideProject = true;
            string path;

            if (useCurrentFileName)
            {
                path = m_CurrentAsset.exportSettings.fileName;
            }
            else
            {
                string title = "Save Texture, use # for frame numbering.";
                string defaultFileName, extension;

                int count = m_ProcessingNodeStack.outputSequence.frames.Count;
                int numU  = m_ProcessingNodeStack.outputSequence.numU;
                int numV  = m_ProcessingNodeStack.outputSequence.numV;

                string defaultDir = Path.GetDirectoryName(AssetDatabase.GetAssetPath(m_CurrentAsset));

                defaultFileName = m_CurrentAsset.name;

                if (count > 1)
                {
                    defaultFileName += "_#";
                }

                if (numU * numV != 1)
                {
                    defaultFileName += "_" + numU + "x" + numV;
                }

                switch (m_CurrentAsset.exportSettings.exportMode)
                {
                case ImageSequence.ExportMode.EXR:
                    defaultFileName += ".exr";
                    extension        = "exr";

                    break;

                case ImageSequence.ExportMode.Targa:
                    defaultFileName += ".tga";
                    extension        = "tga";

                    break;

                case ImageSequence.ExportMode.PNG:
                    defaultFileName += ".png";
                    extension        = "png";

                    break;

                default: return(null);
                }

                path = EditorUtility.SaveFilePanel(title, defaultDir, defaultFileName, extension);
                if (path == null || path == "")
                {
                    return("");
                }

                if (path.Contains(Application.dataPath))
                {
                    path = path.Replace(Application.dataPath, "Assets");
                }
            }

            if (!path.StartsWith("Assets/"))
            {
                bIsInsideProject = false;
                Debug.LogWarning("VFX Toolbox Warning : Saving a texture outside the project's scope. Import Settings will not be applied");
            }

            int frameCount = m_ProcessingNodeStack.outputSequence.length;

            if (frameCount > 1 && !Path.GetFileNameWithoutExtension(path).Contains("#"))
            {
                if (!EditorUtility.DisplayDialog("VFX Toolbox", "You are currently exporting a sequence of images with no # in filename for numbering, do you want to add _# as a suffix of the filename?", "Add Postfix", "Cancel Export"))
                {
                    return("");
                }

                string newpath = Path.GetDirectoryName(path) + "\\" + Path.GetFileNameWithoutExtension(path) + "_#" + Path.GetExtension(path);
                path = newpath;
            }

            ImageSequence.ExportSettings settings = m_CurrentAsset.exportSettings;
            bool bCanceled = false;

            try
            {
                int i = 1;
                foreach (ProcessingFrame frame in m_ProcessingNodeStack.outputSequence.frames)
                {
                    if (VFXToolboxGUIUtility.DisplayProgressBar("Image Sequencer", "Exporting Frame #" + i + "/" + frameCount, (float)i / frameCount, 0, true))
                    {
                        bCanceled = true;
                        break;
                    }

                    // Export frame : first, dump data into color array

                    Color[] inputs;
                    if (frame.texture is Texture2D) // if using input frame
                    {
                        RenderTexture temp = RenderTexture.GetTemporary(frame.texture.width, frame.texture.height, 0, RenderTextureFormat.ARGBHalf);
                        Graphics.Blit((Texture2D)frame.texture, temp);
                        inputs = ReadBack(temp);
                    }
                    else // frame.texture is RenderTexture
                    {
                        frame.Process();
                        inputs = ReadBack((RenderTexture)frame.texture);
                    }

                    string fileName = GetNumberedFileName(path, i, frameCount);

                    // Dump data
                    byte[] bytes;

                    switch (m_CurrentAsset.exportSettings.exportMode)
                    {
                    case ImageSequence.ExportMode.EXR:
#if UNITY_5_6_OR_NEWER
                        // New Exporter
                    {
                        Texture2D texture = new Texture2D(frame.texture.width, frame.texture.height, TextureFormat.RGBAHalf, settings.generateMipMaps, !settings.sRGB);
                        texture.SetPixels(inputs);
                        texture.Apply(true);
                        bytes = texture.EncodeToEXR();
                    }
#else
                        // Old Exporter
                        {
                            bytes = MiniEXR.MiniEXR.MiniEXRWrite((ushort)frame.texture.width, (ushort)frame.texture.height, settings.exportAlpha, inputs, true);
                        }
#endif
                        break;

                    case ImageSequence.ExportMode.Targa:
                    {
                        bytes = MiniTGA.MiniTGAWrite((ushort)frame.texture.width, (ushort)frame.texture.height, settings.exportAlpha, inputs);
                    }
                    break;

                    case ImageSequence.ExportMode.PNG:
                    {
                        Texture2D texture = new Texture2D(frame.texture.width, frame.texture.height, TextureFormat.RGBA32, settings.generateMipMaps, !settings.sRGB);
                        texture.SetPixels(inputs);
                        texture.Apply(true);
                        bytes = texture.EncodeToPNG();
                    }
                    break;

                    default:
                    {
                        bytes = new byte[0] {
                        };                               // Empty file that should not happen
                    }
                    break;
                    }
                    File.WriteAllBytes(fileName, bytes);

                    AssetDatabase.Refresh();

                    // Process Import if saved inside project
                    if (bIsInsideProject)
                    {
                        TextureImporter importer = (TextureImporter)TextureImporter.GetAtPath(fileName);
                        importer.wrapMode   = m_CurrentAsset.exportSettings.wrapMode;
                        importer.filterMode = m_CurrentAsset.exportSettings.filterMode;
                        switch (m_CurrentAsset.exportSettings.dataContents)
                        {
                        case ImageSequence.DataContents.Color:
                            importer.textureType = TextureImporterType.Default;
                            break;

                        case ImageSequence.DataContents.NormalMap:
                            importer.textureType        = TextureImporterType.NormalMap;
                            importer.convertToNormalmap = false;
                            break;

                        case ImageSequence.DataContents.NormalMapFromGrayscale:
                            importer.textureType        = TextureImporterType.NormalMap;
                            importer.convertToNormalmap = true;
                            break;

                        case ImageSequence.DataContents.Sprite:
                            importer.textureType      = TextureImporterType.Sprite;
                            importer.spriteImportMode = SpriteImportMode.Multiple;
                            importer.spritesheet      = GetSpriteMetaData(frame, m_ProcessingNodeStack.outputSequence.numU, m_ProcessingNodeStack.outputSequence.numV);
                            break;
                        }
                        importer.mipmapEnabled = m_CurrentAsset.exportSettings.generateMipMaps;

                        switch (m_CurrentAsset.exportSettings.exportMode)
                        {
                        case ImageSequence.ExportMode.Targa:
                            importer.sRGBTexture        = m_CurrentAsset.exportSettings.sRGB;
                            importer.alphaSource        = m_CurrentAsset.exportSettings.exportAlpha ? TextureImporterAlphaSource.FromInput : TextureImporterAlphaSource.None;
                            importer.textureCompression = m_CurrentAsset.exportSettings.compress ? TextureImporterCompression.Compressed : TextureImporterCompression.Uncompressed;
                            break;

                        case ImageSequence.ExportMode.EXR:
                            importer.sRGBTexture        = false;
                            importer.alphaSource        = (m_CurrentAsset.exportSettings.exportAlpha && !m_CurrentAsset.exportSettings.compress) ? TextureImporterAlphaSource.FromInput : TextureImporterAlphaSource.None;
                            importer.textureCompression = m_CurrentAsset.exportSettings.compress ? TextureImporterCompression.CompressedHQ : TextureImporterCompression.Uncompressed;
                            break;

                        case ImageSequence.ExportMode.PNG:
                            importer.sRGBTexture        = m_CurrentAsset.exportSettings.sRGB;
                            importer.alphaSource        = m_CurrentAsset.exportSettings.exportAlpha ? TextureImporterAlphaSource.FromInput : TextureImporterAlphaSource.None;
                            importer.textureCompression = m_CurrentAsset.exportSettings.compress ? TextureImporterCompression.Compressed : TextureImporterCompression.Uncompressed;
                            break;
                        }

                        AssetDatabase.ImportAsset(fileName, ImportAssetOptions.ForceUpdate);
                    }

                    // Separate Alpha
                    if (m_CurrentAsset.exportSettings.exportSeparateAlpha)
                    {
                        string alphaFilename = fileName.Substring(0, fileName.Length - 4) + "_alpha.tga";
                        // build alpha
                        for (int k = 0; k < inputs.Length; k++)
                        {
                            float a = inputs[k].a;
                            inputs[k] = new Color(a, a, a, a);
                        }
                        MiniTGA.MiniTGAWrite(alphaFilename, (ushort)frame.texture.width, (ushort)frame.texture.height, false, inputs);

                        AssetDatabase.Refresh();

                        // Process Importer for alpha if inside project
                        if (bIsInsideProject)
                        {
                            TextureImporter alphaImporter = (TextureImporter)TextureImporter.GetAtPath(alphaFilename);

                            if (m_CurrentAsset.exportSettings.dataContents == ImageSequence.DataContents.Sprite)
                            {
                                alphaImporter.textureType      = TextureImporterType.Sprite;
                                alphaImporter.spriteImportMode = SpriteImportMode.Multiple;
                                alphaImporter.spritesheet      = GetSpriteMetaData(frame, m_ProcessingNodeStack.outputSequence.numU, m_ProcessingNodeStack.outputSequence.numV);
                                alphaImporter.alphaSource      = TextureImporterAlphaSource.None;
                            }
                            else
                            {
                                alphaImporter.textureType = TextureImporterType.SingleChannel;
                                alphaImporter.alphaSource = TextureImporterAlphaSource.FromGrayScale;
                            }

                            alphaImporter.wrapMode           = m_CurrentAsset.exportSettings.wrapMode;
                            alphaImporter.filterMode         = m_CurrentAsset.exportSettings.filterMode;
                            alphaImporter.sRGBTexture        = false;
                            alphaImporter.mipmapEnabled      = m_CurrentAsset.exportSettings.generateMipMaps;
                            alphaImporter.textureCompression = m_CurrentAsset.exportSettings.compress ? TextureImporterCompression.Compressed : TextureImporterCompression.Uncompressed;

                            AssetDatabase.ImportAsset(alphaFilename, ImportAssetOptions.ForceUpdate);
                        }
                    }

                    i++;
                }
            }
            catch (System.Exception e)
            {
                VFXToolboxGUIUtility.ClearProgressBar();
                Debug.LogError(e.Message);
            }

            VFXToolboxGUIUtility.ClearProgressBar();

            if (bCanceled)
            {
                return("");
            }
            else
            {
                return(path);
            }
        }