/// <summary>
/// Initializes a new instance of the <see cref="StreamingManager"/> class.
/// </summary>
/// <param name="services">The servicies registry.</param>
/// <remarks>
/// The GameSystem expects the following services to be registered: <see cref="T:Stride.Games.IGame" /> and <see cref="T:Stride.Core.Serialization.Contents.IContentManager" />.
/// </remarks>
public StreamingManager([NotNull] IServiceRegistry services)
: base(services)
{
services.AddService(this);
services.AddService <IStreamingManager>(this);
services.AddService <ITexturesStreamingProvider>(this);
ContentStreaming = new ContentStreamingService();
Enabled = true;
EnabledChanged += OnEnabledChanged;
}
private static void DeserializeTexture(ContentManager contentManager, Texture texture, ref ImageDescription imageDescription, ref ContentStorageHeader storageHeader)
{
using (var content = new ContentStreamingService())
{
// Get content storage container
var storage = content.GetStorage(ref storageHeader);
if (storage is null)
{
throw new ContentStreamingException("Missing content storage.");
}
storage.LockChunks();
// Cache data
var fileProvider = contentManager.FileProvider;
var format = imageDescription.Format;
bool isBlockCompressed =
(format >= PixelFormat.BC1_Typeless && format <= PixelFormat.BC5_SNorm) ||
(format >= PixelFormat.BC6H_Typeless && format <= PixelFormat.BC7_UNorm_SRgb);
var dataBoxes = new DataBox[imageDescription.MipLevels * imageDescription.ArraySize];
int dataBoxIndex = 0;
// Get data boxes data
for (int arrayIndex = 0; arrayIndex < imageDescription.ArraySize; arrayIndex++)
{
for (int mipIndex = 0; mipIndex < imageDescription.MipLevels; mipIndex++)
{
int mipWidth = imageDescription.Width >> mipIndex;
int mipHeight = imageDescription.Height >> mipIndex;
if (isBlockCompressed && ((mipWidth % 4) != 0 || (mipHeight % 4) != 0))
{
mipWidth = unchecked ((int)(((uint)(mipWidth + 3)) & ~3U));
mipHeight = unchecked ((int)(((uint)(mipHeight + 3)) & ~3U));
}
int rowPitch, slicePitch;
int widthPacked;
int heightPacked;
Image.ComputePitch(format, mipWidth, mipHeight, out rowPitch, out slicePitch, out widthPacked, out heightPacked);
var chunk = storage.GetChunk(mipIndex);
if (chunk == null || chunk.Size != slicePitch * imageDescription.ArraySize)
{
throw new ContentStreamingException("Data chunk is missing or has invalid size.", storage);
}
var data = chunk.GetData(fileProvider);
if (!chunk.IsLoaded)
{
throw new ContentStreamingException("Data chunk is not loaded.", storage);
}
dataBoxes[dataBoxIndex].DataPointer = data + slicePitch * arrayIndex;
dataBoxes[dataBoxIndex].RowPitch = rowPitch;
dataBoxes[dataBoxIndex].SlicePitch = slicePitch;
dataBoxIndex++;
}
}
// Initialize texture
texture.InitializeFrom(imageDescription, new TextureViewDescription(), dataBoxes);
storage.UnlockChunks();
}
}
private static void DeserializeImage(ContentManager contentManager, Image obj, ref ImageDescription imageDescription, ref ContentStorageHeader storageHeader)
{
using (var content = new ContentStreamingService())
{
// Get content storage container
var storage = content.GetStorage(ref storageHeader);
if (storage == null)
{
throw new ContentStreamingException("Missing content storage.");
}
storage.LockChunks();
// Cache data
var fileProvider = contentManager.FileProvider;
var format = imageDescription.Format;
bool isBlockCompressed =
(format >= PixelFormat.BC1_Typeless && format <= PixelFormat.BC5_SNorm) ||
(format >= PixelFormat.BC6H_Typeless && format <= PixelFormat.BC7_UNorm_SRgb);
// Calculate total size
int size = 0;
for (int mipIndex = 0; mipIndex < imageDescription.MipLevels; mipIndex++)
{
int mipWidth = Math.Max(1, imageDescription.Width >> mipIndex);
int mipHeight = Math.Max(1, imageDescription.Height >> mipIndex);
if (isBlockCompressed && ((mipWidth % 4) != 0 || (mipHeight % 4) != 0))
{
mipWidth = unchecked ((int)(((uint)(mipWidth + 3)) & ~(uint)3));
mipHeight = unchecked ((int)(((uint)(mipHeight + 3)) & ~(uint)3));
}
int rowPitch, slicePitch;
int widthPacked;
int heightPacked;
Image.ComputePitch(format, mipWidth, mipHeight, out rowPitch, out slicePitch, out widthPacked, out heightPacked);
size += slicePitch;
}
size *= imageDescription.ArraySize;
// Preload chunks
for (int mipIndex = 0; mipIndex < imageDescription.MipLevels; mipIndex++)
{
storage.GetChunk(mipIndex)?.GetData(fileProvider);
}
// Allocate buffer for image data
var buffer = Utilities.AllocateMemory(size);
try
{
// Load image data to the buffer
var bufferPtr = buffer;
for (int arrayIndex = 0; arrayIndex < imageDescription.ArraySize; arrayIndex++)
{
for (int mipIndex = 0; mipIndex < imageDescription.MipLevels; mipIndex++)
{
int mipWidth = Math.Max(1, imageDescription.Width >> mipIndex);
int mipHeight = Math.Max(1, imageDescription.Height >> mipIndex);
if (isBlockCompressed && ((mipWidth % 4) != 0 || (mipHeight % 4) != 0))
{
mipWidth = unchecked ((int)(((uint)(mipWidth + 3)) & ~(uint)3));
mipHeight = unchecked ((int)(((uint)(mipHeight + 3)) & ~(uint)3));
}
int rowPitch, slicePitch;
int widthPacked;
int heightPacked;
Image.ComputePitch(format, mipWidth, mipHeight, out rowPitch, out slicePitch, out widthPacked, out heightPacked);
var chunk = storage.GetChunk(mipIndex);
if (chunk == null || chunk.Size != slicePitch * imageDescription.ArraySize)
{
throw new ContentStreamingException("Data chunk is missing or has invalid size.", storage);
}
var data = chunk.GetData(fileProvider);
if (!chunk.IsLoaded)
{
throw new ContentStreamingException("Data chunk is not loaded.", storage);
}
Utilities.CopyMemory(bufferPtr, data, chunk.Size);
bufferPtr += chunk.Size;
}
}
// Initialize image
var image = new Image(imageDescription, buffer, 0, null, true);
obj.InitializeFrom(image);
}
catch
{
// Free memory in case of error
Utilities.FreeMemory(buffer);
throw;
}
storage.UnlockChunks();
}
}
