public static unsafe Document Load(Stream input)
{
Document doc = null;
using (DdsNative.DdsImage image = DdsNative.Load(input))
{
doc = new Document(image.Width, image.Height);
BitmapLayer layer = Layer.CreateBackgroundLayer(image.Width, image.Height);
Surface surface = layer.Surface;
for (int y = 0; y < surface.Height; ++y)
{
byte * src = image.GetRowAddressUnchecked(y);
ColorBgra *dst = surface.GetRowAddressUnchecked(y);
for (int x = 0; x < surface.Width; ++x)
{
dst->R = src[0];
dst->G = src[1];
dst->B = src[2];
dst->A = src[3];
src += 4;
++dst;
}
}
doc.Layers.Add(layer);
}
return(doc);
}
public static void Save(
IServiceProvider services,
Document input,
Stream output,
DdsFileFormat format,
DdsErrorMetric errorMetric,
BC7CompressionMode compressionMode,
bool cubeMap,
bool generateMipmaps,
ResamplingAlgorithm sampling,
Surface scratchSurface,
ProgressEventHandler progressCallback)
{
using (RenderArgs args = new RenderArgs(scratchSurface))
{
input.Render(args, true);
}
DdsNative.DdsProgressCallback ddsProgress = null;
if (progressCallback != null)
{
ddsProgress = (UIntPtr done, UIntPtr total) =>
{
double progress = (double)done.ToUInt64() / (double)total.ToUInt64();
try
{
progressCallback(null, new ProgressEventArgs(progress * 100.0, true));
return(true);
}
catch (OperationCanceledException)
{
return(false);
}
};
}
int width = scratchSurface.Width;
int height = scratchSurface.Height;
int arraySize = 1;
Size?cubeMapFaceSize = null;
if (cubeMap && IsCrossedCubeMapSize(scratchSurface))
{
if (width > height)
{
width /= 4;
height /= 3;
}
else
{
width /= 3;
height /= 4;
}
arraySize = 6;
cubeMapFaceSize = new Size(width, height);
}
int mipLevels = generateMipmaps ? GetMipCount(width, height) : 1;
bool enableHardwareAcceleration = (bool)services.GetService <ISettingsService>().GetSetting(AppSettingPaths.UI.EnableHardwareAcceleration).Value;
DdsNative.DDSSaveInfo info = new DdsNative.DDSSaveInfo
{
width = width,
height = height,
arraySize = arraySize,
mipLevels = mipLevels,
format = format,
errorMetric = errorMetric,
compressionMode = compressionMode,
cubeMap = cubeMapFaceSize.HasValue,
enableHardwareAcceleration = enableHardwareAcceleration
};
using (TextureCollection textures = GetTextures(scratchSurface, cubeMapFaceSize, mipLevels, sampling))
{
DdsNative.Save(info, textures, output, ddsProgress);
}
}
