/// <summary>
/// Saves the current image using one of the supported DDS mechanisms.
/// </summary>
/// <param name="output">A <see cref="T:System.IO.Stream"/> to receive the DDS-encoded image.</param>
public void Save(Stream output)
{
Dds.DdsFormat ddsFormat;
if (useBlockCompression)
switch (alphaDepth)
{
case 1: ddsFormat = Dds.DdsFormat.DXT1; break;
case 3: ddsFormat = Dds.DdsFormat.DXT3; break;
default: ddsFormat = Dds.DdsFormat.DXT5; break;
}
else if (useLuminence)
ddsFormat = Dds.DdsFormat.A8L8;
else
switch (alphaDepth)
{
case 0: ddsFormat = Dds.DdsFormat.R8G8B8; break;
case 1: ddsFormat = Dds.DdsFormat.A1R5G5B5; break;
case 4: ddsFormat = Dds.DdsFormat.A4R4G4B4; break;
default: ddsFormat = Dds.DdsFormat.A8R8G8B8; break;
}
Dds dds = new Dds(ddsFormat, width, height, baseImage);
dds.Write(output);
output.Flush();
}
/// <summary>
/// Loads the data from an image encoded using one of the supported DDS mechanisms.
/// If <paramref name="supportHSV"/> is true, also creates an HSVa-encoded version of the image.
/// </summary>
/// <param name="input">A <see cref="System.IO.Stream"/> containing the DDS-encoded image.</param>
/// <param name="supportHSV">When true, create an HSVa-encoded version of the image.</param>
public void Load(System.IO.Stream input, bool supportHSV)
{
Dds dds = new Dds(input);
width = dds.Width;
height = dds.Height;
useBlockCompression = false;
useLuminence = false;
alphaDepth = 0;
Dds.DdsFormat fmt = dds.FileFormat;
switch (fmt)
{
case Dds.DdsFormat.DXT1: useBlockCompression = true; alphaDepth = 1; break;
case Dds.DdsFormat.DXT3: useBlockCompression = true; alphaDepth = 3; break;
case Dds.DdsFormat.DXT5: useBlockCompression = true; alphaDepth = 5; break;
case Dds.DdsFormat.A8L8: useLuminence = true; alphaDepth = 8; break;
case Dds.DdsFormat.A1R5G5B5: alphaDepth = 1; break;
case Dds.DdsFormat.A4R4G4B4: alphaDepth = 4; break;
case Dds.DdsFormat.A8B8G8R8:
case Dds.DdsFormat.A8R8G8B8: alphaDepth = 8; break;
}
baseImage = dds.ImageData;
currentImage = (uint[])baseImage.Clone();
if (supportHSV) UpdateHSVData();
}
