public void TestTextureToBytesRoundtrip()
{
// Get the texture.
string imageFile = "Assets/Editor/Tests/TestData/TiltBrushLogo.jpg";
Texture2D texture = AssetDatabase.LoadAssetAtPath <Texture2D>(imageFile);
// Reconstruct the texture.
byte[] textureBytes = ImageCache.BytesFromTexture(texture);
Texture2D reconstructedTexture = ImageCache.TextureFromBytes(textureBytes);
// Compare the textures.
CompareTextures(texture, reconstructedTexture);
}
// Attempts to load the icon from the cache. Returns true if successful.
public bool RequestLoadIconCache()
{
if (m_Icon == null)
{
// Try to load from cache.
m_Icon = ImageCache.LoadIconCache(FilePath, out m_ImageAspect);
if (m_Icon != null)
{
m_State = ImageState.Ready;
return(true);
}
}
return(false);
}
/// Returns a full-resolution Texture2D.
/// The lifetime of this texture is handled by ReferenceImage, so should not be destroyed
/// by the user of this method.
public void AcquireImageFullsize(bool runForeground = false)
{
m_FullSizeReferences++;
if (m_FullSizeReferences == 1)
{
// Try the cache first.
m_FullSize = ImageCache.LoadImageCache(FilePath);
if (m_FullSize == null)
{
// Otherwise, this will generate a cache.
m_FullSize = Object.Instantiate(Icon);
var co = LoadImage(FilePath, m_FullSize, runForeground).GetEnumerator();
App.Instance.StartCoroutine(co);
}
}
}
// Like RequestLoadCoroutine, but allowed to use main thread CPU time
IEnumerator <Timeslice> RequestLoadCoroutineMainThread()
{
// On main thread! Can decode images using WWW class. This is about 10x faster
using (WWW loader = new WWW(PathToWwwUrl(m_Path)))
{
while (!loader.isDone)
{
yield return(null);
}
if (string.IsNullOrEmpty(loader.error))
{
// Passing in a texture with mipmapCount > 1 is how you ask for mips
// from WWW.LoadImageIntoTexture
Texture2D inTex = new Texture2D(2, 2, TextureFormat.RGBA32, true);
loader.LoadImageIntoTexture(inTex);
DownsizeTexture(inTex, ref m_Icon, ReferenceImageCatalog.MAX_ICON_TEX_DIMENSION);
m_Icon.wrapMode = TextureWrapMode.Clamp;
m_ImageAspect = (float)inTex.width / inTex.height;
ImageCache.SaveIconCache(m_Icon, FilePath, m_ImageAspect);
yield return(null);
// Create the full size image cache as well.
int resizeLimit = App.PlatformConfig.ReferenceImagesResizeDimension;
if (inTex.width > resizeLimit || inTex.height > resizeLimit)
{
Texture2D resizedTex = new Texture2D(2, 2, TextureFormat.RGBA32, true);
DownsizeTexture(inTex, ref resizedTex, resizeLimit);
ImageCache.SaveImageCache(resizedTex, m_Path);
Object.Destroy(resizedTex);
}
else
{
ImageCache.SaveImageCache(inTex, m_Path);
}
Object.Destroy(inTex);
m_State = ImageState.Ready;
yield break;
}
}
// OK, take the slower path instead.
foreach (var ret in RequestLoadCoroutine())
{
yield return(ret);
}
}
void Awake()
{
m_Instance = this;
m_RequestedLoads = new Stack <int>();
App.InitMediaLibraryPath();
App.InitReferenceImagePath(m_DefaultImages);
m_ReferenceDirectory = App.ReferenceImagePath();
if (Directory.Exists(m_ReferenceDirectory))
{
m_FileWatcher = new FileWatcher(m_ReferenceDirectory);
m_FileWatcher.NotifyFilter = NotifyFilters.LastWrite;
m_FileWatcher.FileChanged += OnChanged;
m_FileWatcher.FileCreated += OnChanged;
m_FileWatcher.FileDeleted += OnChanged;
m_FileWatcher.EnableRaisingEvents = true;
}
ImageCache.DeleteObsoleteCaches();
m_Images = new List <ReferenceImage>();
ProcessReferenceDirectory(userOverlay: false);
}
IEnumerable <Timeslice> RequestLoadCoroutine()
{
var reader = new ThreadedImageReader(m_Path,
ReferenceImageCatalog.MAX_ICON_TEX_DIMENSION,
App.PlatformConfig.ReferenceImagesMaxDimension);
while (!reader.Finished)
{
yield return(null);
}
RawImage result = null;
try
{
result = reader.Result;
}
catch (FutureFailed e)
{
ImageLoadError imageLoad = e.InnerException as ImageLoadError;
if (imageLoad != null)
{
ControllerConsoleScript.m_Instance.AddNewLine(imageLoad.Message, true);
}
}
if (result != null)
{
while (ReferenceImageCatalog.m_Instance.TexturesCreatedThisFrame >=
ReferenceImageCatalog.TEXTURE_CREATIONS_PER_FRAME)
{
yield return(null);
}
if (m_Icon == null)
{
m_Icon = new Texture2D(result.ColorWidth, result.ColorHeight, TextureFormat.RGBA32, true);
}
else
{
m_Icon.Resize(result.ColorWidth, result.ColorHeight, TextureFormat.RGBA32, true);
}
m_ImageAspect = result.ColorAspect;
m_Icon.wrapMode = TextureWrapMode.Clamp;
m_Icon.SetPixels32(result.ColorData);
m_Icon.Apply();
ReferenceImageCatalog.m_Instance.TexturesCreatedThisFrame++;
reader = null;
yield return(null);
}
else
{
// Problem reading the file?
m_State = ImageState.Error;
reader = null;
yield break;
}
m_State = ImageState.Ready;
ImageCache.SaveIconCache(m_Icon, FilePath, m_ImageAspect);
}
// Helper for GetImageFullsize
IEnumerable LoadImage(string path, Texture2D dest, bool runForeground = false)
{
// Temporarily increase the reference count during loading to prevent texture destruction if
// ReturnImageFullSize is called during load.
m_FullSizeReferences++;
var reader = new ThreadedImageReader(path, -1,
App.PlatformConfig.ReferenceImagesMaxDimension);
while (!reader.Finished)
{
if (!runForeground)
{
yield return(null);
}
}
RawImage result = null;
try
{
result = reader.Result;
if (result != null && dest != null)
{
int resizeLimit = App.PlatformConfig.ReferenceImagesResizeDimension;
if (result.ColorWidth > resizeLimit || result.ColorHeight > resizeLimit)
{
// Resize the image to the resize limit before saving it to the dest texture.
var tempTexture = new Texture2D(
result.ColorWidth, result.ColorHeight, TextureFormat.RGBA32, true);
tempTexture.SetPixels32(result.ColorData);
tempTexture.Apply();
DownsizeTexture(tempTexture, ref dest, resizeLimit);
Object.Destroy(tempTexture);
}
else
{
// Save the the image to the dest texture.
dest.Resize(result.ColorWidth, result.ColorHeight, TextureFormat.RGBA32, true);
dest.SetPixels32(result.ColorData);
dest.Apply();
}
// Cache the texture.
ImageCache.SaveImageCache(dest, path);
}
}
catch (FutureFailed e)
{
ImageLoadError imageLoad = e.InnerException as ImageLoadError;
if (imageLoad != null)
{
ControllerConsoleScript.m_Instance.AddNewLine(imageLoad.Message, true);
}
}
finally
{
// Reduce the reference count again. This ensures the image gets properly released if
// ReturnImageFullSize is called before loading finished.
ReleaseImageFullsize();
}
}