/// <summary>
/// Split instructions into seperate phases.
/// </summary>
/// <param name="programChunk"></param>
static void ParseShaderChunk(IrShader shader, ShaderProgramChunk programChunk)
{
Func <OpcodeToken, int, bool> NotSplitToken = (OpcodeToken token, int index) =>
index == 0 ||
token.Header.OpcodeType != OpcodeType.HsForkPhase &&
token.Header.OpcodeType != OpcodeType.HsJoinPhase &&
token.Header.OpcodeType != OpcodeType.Label;
int i = 0;
while (i < programChunk.Tokens.Count)
{
var tokens = programChunk.Tokens.Skip(i).TakeWhile(NotSplitToken).ToList();
if (i == 0)
{
var type = programChunk.Version.ProgramType.GetPassType();
var pass = new IrPass(tokens, programChunk.Version.ProgramType.ToString(), type);
InstructionParser.ParseTokens(pass, tokens);
pass.InputSignature = shader.Signatures.First(s => s.SignatureType == IrSignatureType.Input);
pass.OutputSignature = shader.Signatures.First(s => s.SignatureType == IrSignatureType.Output);
shader.Passes.Add(pass);
}
else if (tokens[0].Header.OpcodeType == OpcodeType.Label)
{
var index = (tokens[0] as InstructionToken).Operands[0].Indices[0].Value;
var pass = new IrPass($"Label{index}", IrPass.PassType.FunctionBody);
InstructionParser.ParseTokens(pass, tokens);
shader.Passes.Add(pass);
}
else if (tokens[0].Header.OpcodeType == OpcodeType.HsForkPhase)
{
var index = shader.Passes.Select(p => p.Type == IrPass.PassType.HullShaderForkPhase).Count();
var pass = new IrPass($"HullForkPhase{index}", IrPass.PassType.HullShaderForkPhase);
InstructionParser.ParseTokens(pass, tokens);
shader.Passes.Add(pass);
}
else
{
var index = shader.Passes.Select(p => p.Type == IrPass.PassType.HullShaderJoinPhase).Count();
var pass = new IrPass(tokens, $"HullJoinPhase{index}", IrPass.PassType.HullShaderJoinPhase);
InstructionParser.ParseTokens(pass, tokens);
shader.Passes.Add(pass);
}
i += tokens.Count;
}
shader.InterfaceManger?.Parse(shader, programChunk.Container);
if (programChunk.Version.ProgramType == ProgramType.HullShader)
{
string patchConstantPassName = "HullPatchConstant";
shader.Passes.Add(new IrPass("HullPatchConstant", IrPass.PassType.HullShaderPatchConstantPhase));
var ctrlPointPass = shader.Passes.First(p => p.Type == IrPass.PassType.HullShaderControlPointPhase);
ctrlPointPass.Attributes.Add(IrAttribute.Create("patchconstantfunc", patchConstantPassName));
}
}
static void ParseLibrary(IrShader shader, BytecodeContainer container)
{
var libraryHeader = container.Chunks.OfType <LibHeaderChunk>().Single();
var libraryFunctions = container.Chunks.OfType <LibfChunk>().ToArray();
for (int i = 0; i < libraryFunctions.Length; i++)
{
var pass = new IrPass(libraryHeader.FunctionDescs[i].Name, IrPass.PassType.FunctionBody);
InstructionParser.ParseTokens(pass, libraryFunctions[i].LibraryContainer.Shader.Tokens);
shader.Passes.Add(pass);
}
}
