public ShaderIrLabel GetLabel(int Position)
{
if (LabelsToInsert.TryGetValue(Position, out ShaderIrLabel Label))
{
return(Label);
}
Label = new ShaderIrLabel();
LabelsToInsert.Add(Position, Label);
return(Label);
}
private void PrintBlockScope(
ShaderIrNode[] Nodes,
int Start,
int Count,
string ScopeName,
int IdentationLevel)
{
string Identation = string.Empty;
for (int Index = 0; Index < IdentationLevel - 1; Index++)
{
Identation += IdentationStr;
}
if (ScopeName != string.Empty)
{
ScopeName += " ";
}
SB.AppendLine(Identation + ScopeName + "{");
string LastLine = Identation + "}";
if (IdentationLevel > 0)
{
Identation += IdentationStr;
}
for (int Index = Start; Index < Start + Count; Index++)
{
ShaderIrNode Node = Nodes[Index];
if (Node is ShaderIrCond Cond)
{
string IfExpr = GetSrcExpr(Cond.Pred, true);
if (Cond.Not)
{
IfExpr = "!(" + IfExpr + ")";
}
if (Cond.Child is ShaderIrOp Op && Op.Inst == ShaderIrInst.Bra)
{
ShaderIrLabel Label = (ShaderIrLabel)Op.OperandA;
int Target = FindLabel(Nodes, Label, Index + 1);
int IfCount = Target - Index - 1;
string SubScopeName = "if (!" + IfExpr + ")";
if (Nodes[Index + IfCount] is ShaderIrOp LastOp && LastOp.Inst == ShaderIrInst.Bra)
{
Target = FindLabel(Nodes, (ShaderIrLabel)LastOp.OperandA, Index + 1);
int ElseCount = Target - (Index + 1 + IfCount);
PrintBlockScope(Nodes, Index + 1, IfCount - 1, SubScopeName, IdentationLevel + 1);
PrintBlockScope(Nodes, Index + 1 + IfCount, ElseCount, "else", IdentationLevel + 1);
Index += IfCount + ElseCount;
}
else
{
PrintBlockScope(Nodes, Index + 1, IfCount, SubScopeName, IdentationLevel + 1);
Index += IfCount;
}
}