virtual public ShaderModel ReadShader()
{
int dxbc = ReadInt32();
System.Diagnostics.Debug.Assert(dxbc == FourCC.Make("DXBC"));
ReadBytes(16); // checksum
ReadInt32(); // 1
ReadInt32(); // totalSize
int chunkCount = ReadInt32();
int[] chunkOffsets = new int[chunkCount];
for (int i = 0; i < chunkCount; i++)
{
chunkOffsets[i] = ReadInt32();
}
ShaderModel shader = null;
foreach (int chunkOffset in chunkOffsets)
{
BaseStream.Position = chunkOffset;
string chunkType = FourCC.Decode(ReadInt32());
if (chunkType == "RDEF")
{
ReadBytes(20);
byte majorVersion = ReadByte();
byte minorVersion = ReadByte();
ShaderType shaderType = (ShaderType)ReadUInt16();
shader = new ShaderModel(minorVersion, majorVersion, shaderType);
}
else if (chunkType == "OSGN")
{
}
else if (chunkType == "SHDR")
{
ReadBytes(8);
int chunkSize = ReadInt32() * 4;
long chunkEnd = BaseStream.Position + chunkSize - 8;
while (BaseStream.Position < chunkEnd)
{
D3D10Instruction instruction = ReadInstruction();
InstructionVerifier.Verify(instruction);
shader.Instructions.Add(instruction);
}
}
}
return(shader);
}
public void ReadFileHeader()
{
int signature = ReadInt32();
if (signature != FourCC.Make("rgxa"))
{
Console.WriteLine("Error: unknown file format!");
throw new InvalidDataException();
}
numShaders = ReadByte();
location = Location.VertexShaders;
}
private byte[] GetConstantTableData()
{
int ctabToken = FourCC.Make("CTAB");
var ctabComment = Instructions
.OfType <D3D9Instruction>()
.FirstOrDefault(x => x.Opcode == Opcode.Comment && x.Params[0] == ctabToken);
if (ctabComment == null)
{
return(null);
}
byte[] constantTable = new byte[ctabComment.Params.Count * 4];
for (int i = 1; i < ctabComment.Params.Count; i++)
{
constantTable[i * 4 - 4] = (byte)(ctabComment.Params[i] & 0xFF);
constantTable[i * 4 - 3] = (byte)((ctabComment.Params[i] >> 8) & 0xFF);
constantTable[i * 4 - 2] = (byte)((ctabComment.Params[i] >> 16) & 0xFF);
constantTable[i * 4 - 1] = (byte)((ctabComment.Params[i] >> 24) & 0xFF);
}
return(constantTable);
}