private int GetMipSize(Tdx.D3DFormat format, ushort width, ushort height)
{
width = Math.Max((ushort)4, width);
height = Math.Max((ushort)4, height);
if (format == Tdx.D3DFormat.DXT1)
{
return
((((width + 3) / 4) *
((height + 3) / 4)) * 8);
}
if (format == Tdx.D3DFormat.DXT2 ||
format == Tdx.D3DFormat.DXT3 ||
format == Tdx.D3DFormat.DXT4 ||
format == Tdx.D3DFormat.DXT5)
{
return
((((width + 3) / 4) *
((height + 3) / 4)) * 16);
}
return(width * height * GetPixelByteSize(format));
}
private static int GetPixelByteSize(Tdx.D3DFormat format)
{
switch (format)
{
case Tdx.D3DFormat.A8:
case Tdx.D3DFormat.P8:
case Tdx.D3DFormat.L8:
case Tdx.D3DFormat.A4L4:
case Tdx.D3DFormat.S8_LOCKABLE:
case Tdx.D3DFormat.VERTEXDATA:
{
return(1);
}
case Tdx.D3DFormat.R5G6B5:
case Tdx.D3DFormat.X1R5G5B5:
case Tdx.D3DFormat.A1R5G5B5:
case Tdx.D3DFormat.A4R4G4B4:
case Tdx.D3DFormat.R3G3B2:
case Tdx.D3DFormat.A8R3G3B2:
case Tdx.D3DFormat.X4R4G4B4:
case Tdx.D3DFormat.A8P8:
case Tdx.D3DFormat.A8L8:
case Tdx.D3DFormat.V8U8:
case Tdx.D3DFormat.L6V5U5:
case Tdx.D3DFormat.D16_LOCKABLE:
case Tdx.D3DFormat.D15S1:
case Tdx.D3DFormat.D16:
case Tdx.D3DFormat.INDEX16:
case Tdx.D3DFormat.L16:
{
return(2);
}
case Tdx.D3DFormat.R8G8B8:
{
return(3);
}
case Tdx.D3DFormat.A8R8G8B8:
case Tdx.D3DFormat.X8R8G8B8:
case Tdx.D3DFormat.A2B10G10R10:
case Tdx.D3DFormat.G16R16:
case Tdx.D3DFormat.X8L8V8U8:
case Tdx.D3DFormat.Q8W8V8U8:
case Tdx.D3DFormat.V16U16:
case Tdx.D3DFormat.A2W10V10U10:
case Tdx.D3DFormat.D32:
case Tdx.D3DFormat.D24S8:
case Tdx.D3DFormat.D24X8:
case Tdx.D3DFormat.D24X4S4:
case Tdx.D3DFormat.INDEX32:
case Tdx.D3DFormat.A8B8G8R8:
case Tdx.D3DFormat.X8B8G8R8:
case Tdx.D3DFormat.A2R10G10B10:
case Tdx.D3DFormat.D32F_LOCKABLE:
case Tdx.D3DFormat.D24FS8:
case Tdx.D3DFormat.D32_LOCKABLE:
{
return(4);
}
case Tdx.D3DFormat.A16B16G16R16:
{
return(8);
}
case Tdx.D3DFormat.G8R8_G8B8:
case Tdx.D3DFormat.R8G8_B8G8:
{
return(1);
}
case Tdx.D3DFormat.YUY2:
case Tdx.D3DFormat.UYVY:
{
return(2);
}
}
throw new ArgumentException("unhandled " + format.ToString());
}
public void Deserialize(Stream input)
{
ushort magic = input.ReadValueU16();
if (magic != 512)
{
throw new FormatException();
}
this.Width = input.ReadValueU16();
this.Height = input.ReadValueU16();
ushort mipCount = input.ReadValueU16();
this.Flags = input.ReadValueEnum <Tdx.HeaderFlags>();
this.Format = input.ReadValueEnum <Tdx.D3DFormat>();
if ((this.Flags & Tdx.HeaderFlags.HasExtraData) == Tdx.HeaderFlags.HasExtraData)
{
uint length = input.ReadValueU32();
this.ExtraData = new byte[length];
input.Read(this.ExtraData, 0, this.ExtraData.Length);
}
if ((this.Flags & Tdx.HeaderFlags.Unknown12) == Tdx.HeaderFlags.Unknown12)
{
// ref#5
throw new FormatException();
}
else
{
if ((this.Flags & Tdx.HeaderFlags.Unknown0) == Tdx.HeaderFlags.Unknown0)
{
// ref#6
throw new FormatException();
}
if ((this.Flags & Tdx.HeaderFlags.Unknown1) == Tdx.HeaderFlags.Unknown1)
{
// ref#7
throw new FormatException();
}
if (this.Width > 2048 ||
this.Height > 2048)
{
// ref#8
throw new FormatException();
}
this.Mipmaps.Clear();
for (ushort i = 0; i < mipCount; i++)
{
var mip = new Tdx.Mipmap();
mip.Width = (ushort)Math.Max(1, this.Width >> i);
mip.Height = (ushort)Math.Max(1, this.Height >> i);
mip.Data = new byte[Math.Max(1, GetMipSize(this.Format, mip.Width, mip.Height))];
input.Read(mip.Data, 0, mip.Data.Length);
this.Mipmaps.Add(mip);
}
}
if (input.Position != input.Length)
{
throw new FormatException();
}
}
