static void PreviewTextureFactory_OnImageUnloaded(string imagePath) {
if (!m_previewTextures.ContainsKey(imagePath))
return;
PreviewTexture texToRemove = m_previewTextures[imagePath];
texToRemove.Dispose();
m_previewTextures.Remove(imagePath);
}
//----------------------------------------------------------------------------------------------------------------------
private static void Update() {
double curTime = EditorApplication.timeSinceStartup;
if (!m_removeObsoleteTextures)
return;
//Remove obsolete textures
m_obsoleteTextures.Clear();
foreach (KeyValuePair<string, PreviewTexture> keyValue in m_previewTextures) {
if (curTime - keyValue.Value.GetLastAccessTime() > OBSOLETE_TIME) {
m_obsoleteTextures.Add(keyValue.Key);
}
}
foreach (string texFullPath in m_obsoleteTextures) {
PreviewTexture texToRemove = m_previewTextures[texFullPath];
texToRemove.Dispose();
m_previewTextures.Remove(texFullPath);
}
m_removeObsoleteTextures = false;
}
//----------------------------------------------------------------------------------------------------------------------
public static Texture2D GetOrCreate(string fullPath, ref ImageData imageData) {
Assert.IsTrue(StreamingImageSequenceConstants.READ_STATUS_SUCCESS == imageData.ReadStatus);
//We only remove obsolete textures if there is any access to PreviewTextures in a particular frame.
//For example, if Unity is not in focus, then we don't want to remove them.
m_removeObsoleteTextures = true;
if (m_previewTextures.ContainsKey(fullPath)) {
Assert.IsNotNull(m_previewTextures[fullPath].GetTexture());
return m_previewTextures[fullPath].GetTexture();
}
//This is static. Don't destroy the tex if a new scene is loaded
Texture2D newTex = imageData.CreateCompatibleTexture(HideFlags.DontSaveInBuild | HideFlags.DontSaveInEditor);
imageData.CopyBufferToTexture(newTex);
newTex.name = "Preview: " + fullPath;
m_previewTextures[fullPath] = new PreviewTexture(newTex);
return newTex;
}
