/// <summary>
/// Saves this instance to a stream.
/// </summary>
/// <param name="stream">The destination stream.</param>
public void Write(SerializationStream stream)
{
var enableStreaming = EnableStreaming && Image.Description.MipLevels > InitialNonStreamedMipCount;
stream.Write(enableStreaming);
if (enableStreaming)
{
// Write image header
ImageHelper.ImageDescriptionSerializer.Serialize(ref Image.Description, ArchiveMode.Serialize, stream);
// Write storage header
Debug.Assert(!string.IsNullOrEmpty(StorageHeader.DataUrl));
StorageHeader.Write(stream);
// Note: in this scenario, we serialize only SkipStreamingMipCount (we know number is strictly higher than this due to previous check)
var newDesc = Image.Description;
newDesc.MipLevels = InitialNonStreamedMipCount;
var pixelBuffers = new PixelBuffer[Image.Description.ArraySize * InitialNonStreamedMipCount];
// Count number of mip maps that won't be part of initial load (they will be available through streaming)
int skippedMipCount = Image.Description.MipLevels - InitialNonStreamedMipCount;
for (uint item = 0; item < Image.Description.ArraySize; ++item)
{
for (uint level = 0; level < InitialNonStreamedMipCount; ++level)
{
pixelBuffers[item * InitialNonStreamedMipCount + level] = Image.PixelBuffers[item * Image.Description.MipLevels + level + skippedMipCount];
}
}
// Adjust new Width/Height
newDesc.Width = pixelBuffers[0].Width;
newDesc.Height = pixelBuffers[0].Height;
var initialImage = new Image
{
Description = newDesc,
PixelBuffers = pixelBuffers,
};
// TODO: We end up duplicating some of the texture data; we could find a way to avoid that by saving only the chunks of higher level mips?
initialImage.Save(stream.NativeStream, ImageFileType.Xenko);
}
else
{
// Write whole image (old texture content serialization)
Image.Save(stream.NativeStream, ImageFileType.Xenko);
}
}
/// <summary>
/// Saves this instance to a stream.
/// </summary>
/// <param name="stream">The destination stream.</param>
public void Write(SerializationStream stream)
{
stream.Write(EnableStreaming);
if (EnableStreaming)
{
// Write image header
ImageHelper.ImageDescriptionSerializer.Serialize(ref Image.Description, ArchiveMode.Serialize, stream);
// Write storage header
Debug.Assert(!string.IsNullOrEmpty(StorageHeader.DataUrl));
StorageHeader.Write(stream);
}
else
{
// Write whole image (old texture content serialization)
Image.Save(stream.NativeStream, ImageFileType.Xenko);
}
}