/// <summary>
/// Convert the specified image.
/// </summary>
/// <param name="image">The image.</param>
/// <param name="libraryData">The library data.</param>
/// <param name="request">The decompression request</param>
/// <exception cref="TextureToolsException">Decompression failed</exception>
private void Convert(TexImage image, DxtTextureLibraryData libraryData, ConvertingRequest request)
{
// TODO: temp if request format is SRGB we force it to non-srgb to perform the conversion. Will not work if texture input is SRGB
var outputFormat = request.Format.IsSRgb() ? request.Format.ToNonSRgb() : request.Format;
Log.Debug($"Converting texture from {(PixelFormat)libraryData.Metadata.format} to {outputFormat}");
var scratchImage = new ScratchImage();
var hr = Utilities.Convert(libraryData.DxtImages, libraryData.DxtImages.Length, ref libraryData.Metadata, (DXGI_FORMAT)outputFormat, TEX_FILTER_FLAGS.TEX_FILTER_BOX, 0.0f, scratchImage);
if (hr != HRESULT.S_OK)
{
Log.Error("Converting failed: " + hr);
throw new TextureToolsException("Converting failed: " + hr);
}
// Freeing Memory
if (image.DisposingLibrary != null)
{
image.DisposingLibrary.Dispose(image);
}
libraryData.Image = scratchImage;
libraryData.DxtImages = libraryData.Image.GetImages();
libraryData.Metadata = libraryData.Image.metadata;
image.DisposingLibrary = this;
// adapt the image format based on desired output format
ChangeDxtImageType(libraryData, (DXGI_FORMAT)request.Format);
UpdateImage(image, libraryData);
}
/// <summary>
/// Compresses the specified image.
/// </summary>
/// <param name="image">The image.</param>
/// <param name="libraryData">The library data.</param>
/// <param name="request">The request.</param>
/// <exception cref="TextureToolsException">Compression failed</exception>
private void Compress(TexImage image, DxtTextureLibraryData libraryData, CompressingRequest request)
{
Log.Debug("Converting/Compressing with " + request.Format + " ...");
if (libraryData.DxtImages == null || libraryData.DxtImages.Length == 0)
{
return;
}
ScratchImage scratchImage = new ScratchImage();
HRESULT hr;
if (request.Format.IsCompressed())
{
var topImage = libraryData.DxtImages[0];
if (topImage.Width % 4 != 0 || topImage.Height % 4 != 0)
{
throw new TextureToolsException(string.Format("The provided texture cannot be compressed into format '{0}' " +
"because its top resolution ({1}-{2}) is not a multiple of 4.", request.Format, topImage.Width, topImage.Height));
}
hr = Utilities.Compress(libraryData.DxtImages, libraryData.DxtImages.Length, ref libraryData.Metadata,
RetrieveNativeFormat(request.Format), TEX_COMPRESS_FLAGS.TEX_COMPRESS_DEFAULT, 0.5f, scratchImage);
}
else
{
hr = Utilities.Convert(libraryData.DxtImages, libraryData.DxtImages.Length, ref libraryData.Metadata,
RetrieveNativeFormat(request.Format), TEX_FILTER_FLAGS.TEX_FILTER_DEFAULT, 0.5f, scratchImage);
}
if (hr != HRESULT.S_OK)
{
Log.Error("Compression failed: " + hr);
throw new TextureToolsException("Compression failed: " + hr);
}
if (image.DisposingLibrary != null)
{
image.DisposingLibrary.Dispose(image);
}
// Updating attributes
libraryData.Image = scratchImage;
libraryData.DxtImages = libraryData.Image.GetImages();
libraryData.Metadata = libraryData.Image.metadata;
image.DisposingLibrary = this;
UpdateImage(image, libraryData);
}
