protected override Task <ResultStatus> DoCommandOverride(ICommandContext commandContext)
{
// load the sound thumbnail image from the resources
using (var imageStream = new MemoryStream(staticImageData))
using (var image = Image.Load(imageStream))
using (var texTool = new TextureTool())
using (var texImage = texTool.Load(image, Parameters.SRgb))
{
// Rescale image so that it fits the thumbnail asked resolution
texTool.Decompress(texImage, texImage.Format.IsSRgb());
texTool.Resize(texImage, thumbnailSize.X, thumbnailSize.Y, Filter.Rescaling.Lanczos3);
// Save
using (var outputImageStream = MicrothreadLocalDatabases.DatabaseFileProvider.OpenStream(Url, VirtualFileMode.Create, VirtualFileAccess.Write))
using (var outputImage = texTool.ConvertToStrideImage(texImage))
{
ThumbnailBuildHelper.ApplyThumbnailStatus(outputImage, DependencyBuildStatus);
outputImage.Save(outputImageStream, ImageFileType.Png);
commandContext.Logger.Verbose($"Thumbnail creation successful [{Url}] to ({outputImage.Description.Width}x{outputImage.Description.Height},{outputImage.Description.Format})");
}
}
return(Task.FromResult(ResultStatus.Successful));
}
private static byte[] HandleBrokenThumbnail()
{
// Load broken asset thumbnail
var assetBrokenThumbnail = Image.Load(DefaultThumbnails.AssetBrokenThumbnail);
// Apply thumbnail status in corner
ThumbnailBuildHelper.ApplyThumbnailStatus(assetBrokenThumbnail, LogMessageType.Error);
var memoryStream = new MemoryStream();
assetBrokenThumbnail.Save(memoryStream, ImageFileType.Png);
return(memoryStream.ToArray());
}
/// <summary>
/// The micro-thread in charge of processing the thumbnail build requests and creating the thumbnails.
/// </summary>
private ResultStatus ProcessThumbnailRequests(ThumbnailBuildRequest request)
{
var status = ResultStatus.Successful;
// Global lock so that only one rendering happens at the same time
lock (lockObject)
{
try
{
lock (AssetBuilderService.OutOfMicrothreadDatabaseLock)
{
MicrothreadLocalDatabases.MountCommonDatabase();
// set the master output
var renderTarget = GraphicsContext.Allocator.GetTemporaryTexture2D(request.Size.X, request.Size.Y, request.ColorSpace == ColorSpace.Linear ? PixelFormat.R8G8B8A8_UNorm_SRgb : PixelFormat.R8G8B8A8_UNorm, TextureFlags.ShaderResource | TextureFlags.RenderTarget);
var depthStencil = GraphicsContext.Allocator.GetTemporaryTexture2D(request.Size.X, request.Size.Y, PixelFormat.D24_UNorm_S8_UInt, TextureFlags.DepthStencil);
try
{
// Fake presenter
// TODO GRAPHICS REFACTOR: Try to remove that
GraphicsDevice.Presenter = new RenderTargetGraphicsPresenter(GraphicsDevice, renderTarget, depthStencil.ViewFormat);
// Always clear the state of the GraphicsDevice to make sure a scene doesn't start with a wrong setup
GraphicsCommandList.ClearState();
// Setup the color space when rendering a thumbnail
GraphicsDevice.ColorSpace = request.ColorSpace;
// render the thumbnail
thumbnailScene.Children.Add(request.Scene);
// Store the graphics compositor to use, so we can dispose it when disposing this ThumbnailGenerator
thumbnailGraphicsCompositors.Add(request.GraphicsCompositor);
sceneSystem.GraphicsCompositor = request.GraphicsCompositor;
// Render once to setup render processors
// TODO GRAPHICS REFACTOR: Should not require two rendering
GraphicsContext.ResourceGroupAllocator.Reset(GraphicsContext.CommandList);
gameSystems.Draw(nullGameTime);
// Draw
gameSystems.Update(nullGameTime);
GraphicsContext.ResourceGroupAllocator.Reset(GraphicsContext.CommandList);
gameSystems.Draw(nullGameTime);
// write the thumbnail to the file
using (var thumbnailImage = renderTarget.GetDataAsImage(GraphicsCommandList))
using (var outputImageStream = request.FileProvider.OpenStream(request.Url, VirtualFileMode.Create, VirtualFileAccess.Write))
{
request.PostProcessThumbnail?.Invoke(thumbnailImage);
ThumbnailBuildHelper.ApplyThumbnailStatus(thumbnailImage, request.DependencyBuildStatus);
thumbnailImage.Save(outputImageStream, ImageFileType.Png);
request.Logger.Info($"Thumbnail creation successful [{request.Url}] to ({thumbnailImage.Description.Width}x{thumbnailImage.Description.Height},{thumbnailImage.Description.Format})");
}
}
finally
{
// Cleanup the scene
thumbnailScene.Children.Clear();
sceneSystem.GraphicsCompositor = null;
GraphicsContext.Allocator.ReleaseReference(depthStencil);
GraphicsContext.Allocator.ReleaseReference(renderTarget);
}
MicrothreadLocalDatabases.UnmountDatabase();
}
}
catch (Exception e)
{
status = ResultStatus.Failed;
request.Logger.Error("An exception occurred while processing thumbnail request.", e);
}
}
return(status);
}