//Refer https://docs.microsoft.com/en-us/windows/win32/direct3dhlsl/dx9-graphics-reference-asm-vs-instructions-vs-3-0
//Refer https://docs.microsoft.com/en-us/windows/win32/direct3dhlsl/dx9-graphics-reference-asm-ps-instructions-ps-3-0
public static int GetInstructionSlotCount(this InstructionToken token)
{
switch (token.Opcode)
{
case Opcode.Dcl:
case Opcode.Def:
case Opcode.DefB:
case Opcode.DefI:
case Opcode.Label:
case Opcode.Comment:
case Opcode.End:
return(0);
case Opcode.Abs:
case Opcode.Add:
case Opcode.Break:
case Opcode.Dp3:
case Opcode.Dp4:
case Opcode.Dst:
case Opcode.Else:
case Opcode.Endif:
case Opcode.Exp:
case Opcode.Frc:
case Opcode.Log:
case Opcode.LogP:
case Opcode.Mad:
case Opcode.Max:
case Opcode.Min:
case Opcode.Mov:
case Opcode.MovA:
case Opcode.Mul:
case Opcode.Nop:
case Opcode.Rcp:
case Opcode.Ret:
case Opcode.Rsq:
case Opcode.SetP:
case Opcode.Sge:
case Opcode.Slt:
case Opcode.Sub:
case Opcode.Cmp:
return(1);
case Opcode.Lrp:
return(1);
case Opcode.Call:
case Opcode.Crs:
case Opcode.EndLoop:
case Opcode.EndRep:
case Opcode.M3x2:
case Opcode.DP2Add:
case Opcode.DSX:
case Opcode.DSY:
case Opcode.TexKill:
return(2);
case Opcode.CallNZ:
case Opcode.BreakC:
case Opcode.Breakp:
case Opcode.If:
case Opcode.IfC:
case Opcode.Lit:
case Opcode.Loop:
case Opcode.M3x3:
case Opcode.M4x3:
case Opcode.Nrm:
case Opcode.Pow:
case Opcode.Rep:
case Opcode.Sgn:
case Opcode.TexLDD:
return(3);
case Opcode.M3x4:
case Opcode.M4x4:
return(4);
//TODO: can't find opcode
//case Opcode.TexLdb:
// return 6
case Opcode.SinCos:
return(8);
case Opcode.TexLDL:
{
var textureType = token.GetDeclSamplerTextureType();
if (textureType == SamplerTextureType.Cube)
{
return(5);
}
else
{
return(2);
}
}
//TexLD
case Opcode.Tex:
{
var textureType = token.GetDeclSamplerTextureType();
if (textureType == SamplerTextureType.Cube)
{
return(4);
}
else
{
return(1);
}
}
//Guessing
case Opcode.ExpP:
return(1);
default:
throw new NotImplementedException($"Instruction not implemented {token.Opcode}");
}
}
