/// <summary>
/// Builds a DDS image from an existing mipmap.
/// </summary>
/// <param name="mip">Mip to base image on.</param>
/// <param name="DDSFormat">Format of mipmap.</param>
public ImageEngineImage(MipMap mip, ImageEngineFormat DDSFormat)
{
Format = new Format(DDSFormat);
MipMaps = new List <MipMap>()
{
mip
};
header = DDSGeneral.Build_DDS_Header(1, mip.Height, mip.Width, DDSFormat);
}
internal static List <MipMap> LoadImage(byte[] rawDDSData, ImageEngineFormat surfaceFormat, int width, int height, out DDSGeneral.DDS_HEADER header)
{
header = DDSGeneral.Build_DDS_Header(1, height, width, surfaceFormat);
List <MipMap> MipMaps = null;
// Create new fully formatted DDS i.e. one with a header.
MemoryStream stream = new MemoryStream();
BinaryWriter bw = new BinaryWriter(stream);
DDSGeneral.Write_DDS_Header(header, bw);
bw.Write(rawDDSData);
switch (surfaceFormat)
{
case ImageEngineFormat.DDS_DXT1:
case ImageEngineFormat.DDS_DXT2:
case ImageEngineFormat.DDS_DXT3:
case ImageEngineFormat.DDS_DXT4:
case ImageEngineFormat.DDS_DXT5:
if (WindowsWICCodecsAvailable)
{
MipMaps = WIC_Codecs.LoadWithCodecs(stream, 0, 0, true);
}
else
{
MipMaps = DDSGeneral.LoadDDS(stream, header, new Format(surfaceFormat), 0);
}
break;
case ImageEngineFormat.DDS_ARGB:
case ImageEngineFormat.DDS_A8L8:
case ImageEngineFormat.DDS_RGB:
case ImageEngineFormat.DDS_ATI1:
case ImageEngineFormat.DDS_ATI2_3Dc:
case ImageEngineFormat.DDS_G8_L8:
case ImageEngineFormat.DDS_V8U8:
MipMaps = DDSGeneral.LoadDDS(stream, header, new Format(surfaceFormat), 0);
break;
default:
throw new InvalidDataException("Image format is unknown.");
}
bw.Dispose(); // Also disposes MemoryStream
return(MipMaps);
}
private MemoryStream buildDdsImage(int mipMapIndex, out ImageEngineFormat imageFormat)
{
DomainPropertyByteValue formatProp = PropertyHeader.GetProperty("Format").FirstOrDefault()?.Value as DomainPropertyByteValue;
imageFormat = ImageEngineFormat.Unknown;
if (formatProp == null)
{
return(null);
}
string format = formatProp.PropertyString.Replace("PF_", null);
switch (format)
{
case "DXT1":
{
imageFormat = ImageEngineFormat.DDS_DXT1;
break;
}
case "DXT5":
{
imageFormat = ImageEngineFormat.DDS_DXT5;
break;
}
case "G8":
{
imageFormat = ImageEngineFormat.DDS_G8_L8;
break;
}
case "A8R8G8B8":
{
imageFormat = ImageEngineFormat.DDS_ARGB;
break;
}
default:
{
return(null);
}
}
DomainMipMap mipMap = MipMaps[mipMapIndex];
DDSGeneral.DDS_HEADER header = DDSGeneral.Build_DDS_Header(0, mipMap.Height, mipMap.Width, imageFormat);
MemoryStream stream = new MemoryStream();
BinaryWriter writer = new BinaryWriter(stream);
DDSGeneral.Write_DDS_Header(header, writer);
stream.Write(mipMap.ImageData, 0, mipMap.ImageData.Length);
stream.Flush();
stream.Position = 0;
return(stream);
}
