public static ShaderProgramChunk Parse(BytecodeReader reader)
{
var program = new ShaderProgramChunk
{
Version = ShaderVersion.ParseShex(reader),
// Length Token (LenTok)
// Always follows VerTok
// [31:00] Unsigned integer count of number of DWORDs in program code, including version and length tokens.
// So the minimum value is 0x00000002 (if an empty program is ever valid).
Length = reader.ReadUInt32()
};
while (!reader.EndOfBuffer)
{
// Opcode Format (OpcodeToken0)
//
// [10:00] D3D10_SB_OPCODE_TYPE
// if( [10:00] == D3D10_SB_OPCODE_CUSTOMDATA )
// {
// Token starts a custom-data block. See "Custom-Data Block Format".
// }
// else // standard opcode token
// {
// [23:11] Opcode-Specific Controls
// [30:24] Instruction length in DWORDs including the opcode token.
// [31] 0 normally. 1 if extended operand definition, meaning next DWORD
// contains extended opcode token.
// }
var opcodeHeaderReader = reader.CopyAtCurrentPosition();
var opcodeToken0 = opcodeHeaderReader.ReadUInt32();
var opcodeHeader = new OpcodeHeader
{
OpcodeType = opcodeToken0.DecodeValue<OpcodeType>(0, 10),
Length = opcodeToken0.DecodeValue(24, 30),
IsExtended = (opcodeToken0.DecodeValue(31, 31) == 1)
};
OpcodeToken opcodeToken;
if (opcodeHeader.OpcodeType == OpcodeType.CustomData)
{
opcodeToken = CustomDataToken.Parse(reader, opcodeToken0);
}
else if (opcodeHeader.OpcodeType.IsDeclaration())
{
opcodeToken = DeclarationToken.Parse(reader, opcodeHeader.OpcodeType);
}
else // Not custom data or declaration, so must be instruction.
{
opcodeToken = InstructionToken.Parse(reader, opcodeHeader);
}
opcodeToken.Header = opcodeHeader;
program.Tokens.Add(opcodeToken);
}
program.LinkControlFlowInstructions();
return program;
}
public static ResourceDefinitionChunk Parse(BytecodeReader reader)
{
var headerReader = reader.CopyAtCurrentPosition();
uint constantBufferCount = headerReader.ReadUInt32();
uint constantBufferOffset = headerReader.ReadUInt32();
uint resourceBindingCount = headerReader.ReadUInt32();
uint resourceBindingOffset = headerReader.ReadUInt32();
var target = ShaderVersion.ParseRdef(headerReader);
uint flags = headerReader.ReadUInt32();
var creatorOffset = headerReader.ReadUInt32();
var creatorReader = reader.CopyAtOffset((int) creatorOffset);
var creator = creatorReader.ReadString();
var result = new ResourceDefinitionChunk
{
Target = target,
Flags = (ShaderFlags) flags,
Creator = creator
};
if (target.MajorVersion >= 5)
{
string rd11 = headerReader.ReadUInt32().ToFourCcString();
if (rd11 != "RD11")
throw new ParseException("Expected RD11.");
var unknown1 = headerReader.ReadUInt32(); // TODO
Debug.Assert(unknown1 == 60);
var unknown2 = headerReader.ReadUInt32();
Debug.Assert(unknown2 == 24);
var unknown3 = headerReader.ReadUInt32();
Debug.Assert(unknown3 == 32);
var unknown4 = headerReader.ReadUInt32();
Debug.Assert(unknown4 == 40);
var unknown5 = headerReader.ReadUInt32();
Debug.Assert(unknown5 == 36);
var unknown6 = headerReader.ReadUInt32();
Debug.Assert(unknown6 == 12);
result.InterfaceSlotCount = headerReader.ReadUInt32();
}
var constantBufferReader = reader.CopyAtOffset((int) constantBufferOffset);
for (int i = 0; i < constantBufferCount; i++)
result.ConstantBuffers.Add(ConstantBuffer.Parse(reader, constantBufferReader, result.Target));
var resourceBindingReader = reader.CopyAtOffset((int) resourceBindingOffset);
for (int i = 0; i < resourceBindingCount; i++)
result.ResourceBindings.Add(ResourceBinding.Parse(reader, resourceBindingReader));
return result;
}
public static InterfacesChunk Parse(BytecodeReader reader, uint sizeInBytes)
{
var headerReader = reader.CopyAtCurrentPosition();
var result = new InterfacesChunk();
var classInstanceCount = headerReader.ReadUInt32();
var classTypeCount = headerReader.ReadUInt32();
var interfaceSlotRecordCount = headerReader.ReadUInt32();
// Will be same as interfaceSlotRecordCount unless there are interface arrays.
result.InterfaceSlotCount = headerReader.ReadUInt32();
headerReader.ReadUInt32(); // Think this is offset to start of interface slot info, but we don't need it.
var classTypeOffset = headerReader.ReadUInt32();
var availableClassReader = reader.CopyAtOffset((int) classTypeOffset);
var interfaceSlotOffset = headerReader.ReadUInt32();
var interfaceSlotReader = reader.CopyAtOffset((int) interfaceSlotOffset);
for (uint i = 0; i < classTypeCount; i++)
{
var classType = ClassType.Parse(reader, availableClassReader);
classType.ID = i; // Really??
result.AvailableClassTypes.Add(classType);
}
for (uint i = 0; i < classInstanceCount; i++)
{
var classInstance = ClassInstance.Parse(reader, availableClassReader);
result.AvailableClassInstances.Add(classInstance);
}
uint startSlot = 0;
for (uint i = 0; i < interfaceSlotRecordCount; i++)
{
var interfaceSlot = InterfaceSlot.Parse(reader, interfaceSlotReader);
interfaceSlot.StartSlot = startSlot; // Really??
result.InterfaceSlots.Add(interfaceSlot);
startSlot += interfaceSlot.SlotSpan;
}
return result;
}
public static InputOutputSignatureChunk Parse(BytecodeReader reader, ChunkType chunkType,
ProgramType programType)
{
InputOutputSignatureChunk result;
switch (chunkType)
{
case ChunkType.Isgn :
result = new InputSignatureChunk();
break;
case ChunkType.Osgn :
case ChunkType.Osg5 :
result = new OutputSignatureChunk();
break;
case ChunkType.Pcsg :
result = new PatchConstantSignatureChunk();
break;
default :
throw new ArgumentOutOfRangeException("chunkType", "Unrecognised chunk type: " + chunkType);
}
var chunkReader = reader.CopyAtCurrentPosition();
var elementCount = chunkReader.ReadUInt32();
var uniqueKey = chunkReader.ReadUInt32();
SignatureElementSize elementSize;
switch (chunkType)
{
case ChunkType.Osg5 :
elementSize = SignatureElementSize._7;
break;
case ChunkType.Isgn:
case ChunkType.Osgn:
case ChunkType.Pcsg:
elementSize = SignatureElementSize._6;
break;
default:
throw new ArgumentOutOfRangeException("chunkType", "Unrecognised chunk type: " + chunkType);
}
for (int i = 0; i < elementCount; i++)
result.Parameters.Add(SignatureParameterDescription.Parse(reader, chunkReader, chunkType, elementSize,
programType));
return result;
}
public static BytecodeChunk ParseChunk(BytecodeReader chunkReader, BytecodeContainer container)
{
// Type of chunk this is.
uint fourCc = chunkReader.ReadUInt32();
// Total length of the chunk in bytes.
uint chunkSize = chunkReader.ReadUInt32();
ChunkType chunkType;
if (KnownChunkTypes.ContainsKey(fourCc))
{
chunkType = KnownChunkTypes[fourCc];
}
else
{
System.Diagnostics.Debug.WriteLine("Chunk type '" + fourCc.ToFourCcString() + "' is not yet supported.");
return null;
}
var chunkContentReader = chunkReader.CopyAtCurrentPosition((int) chunkSize);
BytecodeChunk chunk;
switch (chunkType)
{
case ChunkType.Ifce :
chunk = InterfacesChunk.Parse(chunkContentReader, chunkSize);
break;
case ChunkType.Isgn :
case ChunkType.Osgn:
case ChunkType.Osg5:
case ChunkType.Pcsg:
chunk = InputOutputSignatureChunk.Parse(chunkContentReader, chunkType,
container.ResourceDefinition.Target.ProgramType);
break;
case ChunkType.Rdef:
chunk = ResourceDefinitionChunk.Parse(chunkContentReader);
break;
case ChunkType.Sdbg :
case ChunkType.Spdb :
chunk = DebuggingChunk.Parse(chunkContentReader, chunkType, (int) chunkSize);
break;
case ChunkType.Sfi0:
chunk = Sfi0Chunk.Parse(chunkContentReader);
break;
case ChunkType.Shdr:
case ChunkType.Shex:
chunk = ShaderProgramChunk.Parse(chunkContentReader);
break;
case ChunkType.Stat:
chunk = StatisticsChunk.Parse(chunkContentReader, chunkSize);
break;
default :
throw new ParseException("Invalid chunk type: " + chunkType);
}
chunk.Container = container;
chunk.FourCc = fourCc;
chunk.ChunkSize = chunkSize;
chunk.ChunkType = chunkType;
return chunk;
}