private void InitWithDDSBitmap(BinaryReader reader)
{
UInt32 magic = reader.ReadUInt32();
UInt32 size = reader.ReadUInt32();
if (magic != DDSMagic || size != 124)
{
throw new InvalidDataException("Invalid DDS file header");
}
// UInt32 flags =
reader.ReadUInt32();
int height = reader.ReadInt32();
int width = reader.ReadInt32();
int pitchOrLinearSize = (int)reader.ReadUInt32();
// UInt32 depth =
reader.ReadUInt32();
UInt32 mipMapCount = reader.ReadUInt32();
reader.ReadBytes(11 * 4);
// Read pixel format
reader.ReadUInt32(); // Structure size (32 bytes)
DDSPFFlags pfFlags = (DDSPFFlags)reader.ReadUInt32();
UInt32 pfFourCC = reader.ReadUInt32();
// UInt32 pfRGBBitCount =
reader.ReadUInt32();
// UInt32 pfRBitMask =
reader.ReadUInt32();
// UInt32 pfGBitMask =
reader.ReadUInt32();
// UInt32 pfBBitMask =
reader.ReadUInt32();
// UInt32 pfABitMask =
reader.ReadUInt32();
// read the rest of header
// UInt32 caps =
reader.ReadUInt32();
// UInt32 caps2 =
reader.ReadUInt32();
// UInt32 caps3 =
reader.ReadUInt32();
// UInt32 caps4 =
reader.ReadUInt32();
// UInt32 reserved2 =
reader.ReadUInt32();
SurfaceSize = ImageSize = new Size(width, height);
mipMapCount = 1;
Action glCommands = PrepareOpenGLTexture;
MemoryUsed = 0;
for (int level = 0; level < mipMapCount; level++)
{
if (width < 8 || height < 8)
{
break;
}
if ((pfFlags & DDSPFFlags.RGB) != 0)
{
ReadRGBAImage(ref glCommands, reader, level, width, height, pitchOrLinearSize);
}
else if ((pfFlags & DDSPFFlags.FourCC) != 0)
{
ReadCompressedImage(ref glCommands, reader, level, width, height, pitchOrLinearSize, pfFourCC);
}
else
{
throw new InvalidDataException("Error reading DDS");
}
pitchOrLinearSize /= 4;
width /= 2;
height /= 2;
}
Application.InvokeOnMainThread(glCommands);
}
private void InitWithDDSBitmap(BinaryReader reader)
{
UInt32 magic = reader.ReadUInt32();
UInt32 size = reader.ReadUInt32();
if (magic != DDSMagic || size != 124)
{
throw new InvalidDataException("Invalid DDS file header");
}
// UInt32 flags =
reader.ReadUInt32();
int height = reader.ReadInt32();
int width = reader.ReadInt32();
int pitchOrLinearSize = (int)reader.ReadUInt32();
// UInt32 depth =
reader.ReadUInt32();
UInt32 mipMapCount = reader.ReadUInt32();
reader.ReadBytes(11 * 4);
// Read pixel format
reader.ReadUInt32(); // Structure size (32 bytes)
DDSPFFlags pfFlags = (DDSPFFlags)reader.ReadUInt32();
UInt32 pfFourCC = reader.ReadUInt32();
// UInt32 pfRGBBitCount =
reader.ReadUInt32();
// UInt32 pfRBitMask =
reader.ReadUInt32();
// UInt32 pfGBitMask =
reader.ReadUInt32();
// UInt32 pfBBitMask =
reader.ReadUInt32();
// UInt32 pfABitMask =
reader.ReadUInt32();
// read the rest of header
// UInt32 caps =
reader.ReadUInt32();
// UInt32 caps2 =
reader.ReadUInt32();
// UInt32 caps3 =
reader.ReadUInt32();
// UInt32 caps4 =
reader.ReadUInt32();
// UInt32 reserved2 =
reader.ReadUInt32();
Format format;
if ((pfFlags & DDSPFFlags.RGB) != 0)
{
format = Format.R8G8B8A8_UNorm;
}
else
{
switch ((DDSFourCC)pfFourCC)
{
case DDSFourCC.DXT1:
format = Format.BC1_RGB_UNorm_Block;
break;
case DDSFourCC.DXT3:
format = Format.BC2_UNorm_Block;
break;
case DDSFourCC.DXT5:
format = Format.BC3_UNorm_Block;
break;
default:
throw new InvalidDataException("Unsupported texture format");
}
}
SurfaceSize = ImageSize = new Size(width, height);
mipMapCount = 1;
if (mipMapCount > 1 && mipMapCount != GraphicsUtility.CalculateMipLevelCount(width, height))
{
throw new NotSupportedException();
}
Action deferredCommands = () => EnsurePlatformTexture(format, width, height, mipMapCount > 1);
MemoryUsed = 0;
for (int level = 0; level < mipMapCount; level++)
{
var levelCopy = level;
var buffer = ReadTextureData(reader, GraphicsUtility.CalculateMipLevelDataSize(levelCopy, format, width, height));
deferredCommands += () => platformTexture.SetData(levelCopy, buffer);
}
Window.Current.InvokeOnRendering(deferredCommands);
}
