Implement remaining shader double-precision instructions (#2845)

* Implement remaining shader double-precision instructions

* Shader cache version bump

Ryujinx.Graphics.Gpu/Shader/ShaderCache.cs

@@ -40,7 +40,7 @@ namespace Ryujinx.Graphics.Gpu.Shader
         /// <summary>
         /// Version of the codegen (to be changed when codegen or guest format change).
         /// </summary>
-        private const ulong ShaderCodeGenVersion = 2876;
+        private const ulong ShaderCodeGenVersion = 2845;
 
         // Progress reporting helpers
         private volatile int _shaderCount;

Ryujinx.Graphics.Shader/CodeGen/Glsl/Instructions/InstGen.cs

@@ -35,8 +35,16 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
             VariableType type = GetSrcVarType(operation.Inst, 0);
 
             string srcExpr = GetSoureExpr(context, src, type);
+            string zero;
 
-            NumberFormatter.TryFormat(0, type, out string zero);
+            if (type == VariableType.F64)
+            {
+                zero = "0.0";
+            }
+            else
+            {
+                NumberFormatter.TryFormat(0, type, out zero);
+            }
 
             // Starting in the 496.13 NVIDIA driver, there's an issue with assigning variables to negated expressions.
             // (-expr) does not work, but (0.0 - expr) does. This should be removed once the issue is resolved.

Ryujinx.Graphics.Shader/CodeGen/Glsl/NumberFormatter.cs

@@ -10,7 +10,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
 
         public static bool TryFormat(int value, VariableType dstType, out string formatted)
         {
-            if (dstType == VariableType.F32 || dstType == VariableType.F64)
+            if (dstType == VariableType.F32)
             {
                 return TryFormatFloat(BitConverter.Int32BitsToSingle(value), out formatted);
             }

Ryujinx.Graphics.Shader/Instructions/InstEmit.cs

@@ -75,69 +75,6 @@ namespace Ryujinx.Graphics.Shader.Instructions
             context.Config.GpuAccessor.Log("Shader instruction Cs2r is not implemented.");
         }
 
-        public static void DmnmxR(EmitterContext context)
-        {
-            InstDmnmxR op = context.GetOp<InstDmnmxR>();
-
-            context.Config.GpuAccessor.Log("Shader instruction DmnmxR is not implemented.");
-        }
-
-        public static void DmnmxI(EmitterContext context)
-        {
-            InstDmnmxI op = context.GetOp<InstDmnmxI>();
-
-            context.Config.GpuAccessor.Log("Shader instruction DmnmxI is not implemented.");
-        }
-
-        public static void DmnmxC(EmitterContext context)
-        {
-            InstDmnmxC op = context.GetOp<InstDmnmxC>();
-
-            context.Config.GpuAccessor.Log("Shader instruction DmnmxC is not implemented.");
-        }
-
-        public static void DsetR(EmitterContext context)
-        {
-            InstDsetR op = context.GetOp<InstDsetR>();
-
-            context.Config.GpuAccessor.Log("Shader instruction DsetR is not implemented.");
-        }
-
-        public static void DsetI(EmitterContext context)
-        {
-            InstDsetI op = context.GetOp<InstDsetI>();
-
-            context.Config.GpuAccessor.Log("Shader instruction DsetI is not implemented.");
-        }
-
-        public static void DsetC(EmitterContext context)
-        {
-            InstDsetC op = context.GetOp<InstDsetC>();
-
-            context.Config.GpuAccessor.Log("Shader instruction DsetC is not implemented.");
-        }
-
-        public static void DsetpR(EmitterContext context)
-        {
-            InstDsetpR op = context.GetOp<InstDsetpR>();
-
-            context.Config.GpuAccessor.Log("Shader instruction DsetpR is not implemented.");
-        }
-
-        public static void DsetpI(EmitterContext context)
-        {
-            InstDsetpI op = context.GetOp<InstDsetpI>();
-
-            context.Config.GpuAccessor.Log("Shader instruction DsetpI is not implemented.");
-        }
-
-        public static void DsetpC(EmitterContext context)
-        {
-            InstDsetpC op = context.GetOp<InstDsetpC>();
-
-            context.Config.GpuAccessor.Log("Shader instruction DsetpC is not implemented.");
-        }
-
         public static void FchkR(EmitterContext context)
         {
             InstFchkR op = context.GetOp<InstFchkR>();

Ryujinx.Graphics.Shader/Instructions/InstEmitConversion.cs

@@ -98,7 +98,7 @@ namespace Ryujinx.Graphics.Shader.Instructions
 
             var src = GetSrcReg(context, op.SrcB);
 
-            EmitI2I(context, op.ISrcFmt, op.IDstFmt, src, op.ByteSel, op.Dest, op.AbsB, op.NegB, op.Sat);
+            EmitI2I(context, op.ISrcFmt, op.IDstFmt, src, op.ByteSel, op.Dest, op.AbsB, op.NegB, op.Sat, op.WriteCC);
         }
 
         public static void I2iI(EmitterContext context)
@@ -107,7 +107,7 @@ namespace Ryujinx.Graphics.Shader.Instructions
 
             var src = GetSrcImm(context, Imm20ToSInt(op.Imm20));
 
-            EmitI2I(context, op.ISrcFmt, op.IDstFmt, src, op.ByteSel, op.Dest, op.AbsB, op.NegB, op.Sat);
+            EmitI2I(context, op.ISrcFmt, op.IDstFmt, src, op.ByteSel, op.Dest, op.AbsB, op.NegB, op.Sat, op.WriteCC);
         }
 
         public static void I2iC(EmitterContext context)
@@ -116,7 +116,7 @@ namespace Ryujinx.Graphics.Shader.Instructions
 
             var src = GetSrcCbuf(context, op.CbufSlot, op.CbufOffset);
 
-            EmitI2I(context, op.ISrcFmt, op.IDstFmt, src, op.ByteSel, op.Dest, op.AbsB, op.NegB, op.Sat);
+            EmitI2I(context, op.ISrcFmt, op.IDstFmt, src, op.ByteSel, op.Dest, op.AbsB, op.NegB, op.Sat, op.WriteCC);
         }
 
         private static void EmitF2F(
@@ -176,7 +176,6 @@ namespace Ryujinx.Graphics.Shader.Instructions
             if (dstType == IDstFmt.U64)
             {
                 context.Config.GpuAccessor.Log("Unimplemented 64-bits F2I.");
-                return;
             }
 
             Instruction fpType = srcType.ToInstFPType();
@@ -198,7 +197,9 @@ namespace Ryujinx.Graphics.Shader.Instructions
             if (!isSignedInt)
             {
                 // Negative float to uint cast is undefined, so we clamp the value before conversion.
-                srcB = context.FPMaximum(srcB, ConstF(0), fpType);
+                Operand c0 = srcType == DstFmt.F64 ? context.PackDouble2x32(0.0) : ConstF(0);
+
+                srcB = context.FPMaximum(srcB, c0, fpType);
             }
 
             if (srcType == DstFmt.F64)
@@ -292,7 +293,8 @@ namespace Ryujinx.Graphics.Shader.Instructions
             int rd,
             bool absolute,
             bool negate,
-            bool saturate)
+            bool saturate,
+            bool writeCC)
         {
             if ((srcType & ~ISrcDstFmt.S8) > ISrcDstFmt.U32 || (dstType & ~ISrcDstFmt.S8) > ISrcDstFmt.U32)
             {
@@ -337,7 +339,7 @@ namespace Ryujinx.Graphics.Shader.Instructions
 
             context.Copy(GetDest(rd), src);
 
-            // TODO: CC.
+            SetZnFlags(context, src, writeCC);
         }
 
         private static Operand UnpackReg(EmitterContext context, DstFmt floatType, bool h, int reg)

Ryujinx.Graphics.Shader/Instructions/InstEmitFloatArithmetic.cs

@@ -528,18 +528,5 @@ namespace Ryujinx.Graphics.Shader.Instructions
 
             context.Copy(GetDest(rd), GetHalfPacked(context, swizzle, res, rd));
         }
-
-        private static void SetDest(EmitterContext context, Operand value, int rd, bool isFP64)
-        {
-            if (isFP64)
-            {
-                context.Copy(GetDest(rd), context.UnpackDouble2x32Low(value));
-                context.Copy(GetDest2(rd), context.UnpackDouble2x32High(value));
-            }
-            else
-            {
-                context.Copy(GetDest(rd), value);
-            }
-        }
     }
 }

Ryujinx.Graphics.Shader/Instructions/InstEmitFloatComparison.cs

@@ -11,6 +11,156 @@ namespace Ryujinx.Graphics.Shader.Instructions
 {
     static partial class InstEmit
     {
+        public static void DsetR(EmitterContext context)
+        {
+            InstDsetR op = context.GetOp<InstDsetR>();
+
+            var srcA = GetSrcReg(context, op.SrcA, isFP64: true);
+            var srcB = GetSrcReg(context, op.SrcB, isFP64: true);
+
+            EmitFset(
+                context,
+                op.FComp,
+                op.Bop,
+                srcA,
+                srcB,
+                op.SrcPred,
+                op.SrcPredInv,
+                op.Dest,
+                op.AbsA,
+                op.AbsB,
+                op.NegA,
+                op.NegB,
+                op.BVal,
+                op.WriteCC,
+                isFP64: true);
+        }
+
+        public static void DsetI(EmitterContext context)
+        {
+            InstDsetI op = context.GetOp<InstDsetI>();
+
+            var srcA = GetSrcReg(context, op.SrcA, isFP64: true);
+            var srcB = GetSrcImm(context, Imm20ToFloat(op.Imm20), isFP64: true);
+
+            EmitFset(
+                context,
+                op.FComp,
+                op.Bop,
+                srcA,
+                srcB,
+                op.SrcPred,
+                op.SrcPredInv,
+                op.Dest,
+                op.AbsA,
+                op.AbsB,
+                op.NegA,
+                op.NegB,
+                op.BVal,
+                op.WriteCC,
+                isFP64: true);
+        }
+
+        public static void DsetC(EmitterContext context)
+        {
+            InstDsetC op = context.GetOp<InstDsetC>();
+
+            var srcA = GetSrcReg(context, op.SrcA, isFP64: true);
+            var srcB = GetSrcCbuf(context, op.CbufSlot, op.CbufOffset, isFP64: true);
+
+            EmitFset(
+                context,
+                op.FComp,
+                op.Bop,
+                srcA,
+                srcB,
+                op.SrcPred,
+                op.SrcPredInv,
+                op.Dest,
+                op.AbsA,
+                op.AbsB,
+                op.NegA,
+                op.NegB,
+                op.BVal,
+                op.WriteCC,
+                isFP64: true);
+        }
+
+        public static void DsetpR(EmitterContext context)
+        {
+            InstDsetpR op = context.GetOp<InstDsetpR>();
+
+            var srcA = GetSrcReg(context, op.SrcA, isFP64: true);
+            var srcB = GetSrcReg(context, op.SrcB, isFP64: true);
+
+            EmitFsetp(
+                context,
+                op.FComp,
+                op.Bop,
+                srcA,
+                srcB,
+                op.SrcPred,
+                op.SrcPredInv,
+                op.DestPred,
+                op.DestPredInv,
+                op.AbsA,
+                op.AbsB,
+                op.NegA,
+                op.NegB,
+                writeCC: false,
+                isFP64: true);
+        }
+
+        public static void DsetpI(EmitterContext context)
+        {
+            InstDsetpI op = context.GetOp<InstDsetpI>();
+
+            var srcA = GetSrcReg(context, op.SrcA, isFP64: true);
+            var srcB = GetSrcImm(context, Imm20ToFloat(op.Imm20), isFP64: true);
+
+            EmitFsetp(
+                context,
+                op.FComp,
+                op.Bop,
+                srcA,
+                srcB,
+                op.SrcPred,
+                op.SrcPredInv,
+                op.DestPred,
+                op.DestPredInv,
+                op.AbsA,
+                op.AbsB,
+                op.NegA,
+                op.NegB,
+                writeCC: false,
+                isFP64: true);
+        }
+
+        public static void DsetpC(EmitterContext context)
+        {
+            InstDsetpC op = context.GetOp<InstDsetpC>();
+
+            var srcA = GetSrcReg(context, op.SrcA, isFP64: true);
+            var srcB = GetSrcCbuf(context, op.CbufSlot, op.CbufOffset, isFP64: true);
+
+            EmitFsetp(
+                context,
+                op.FComp,
+                op.Bop,
+                srcA,
+                srcB,
+                op.SrcPred,
+                op.SrcPredInv,
+                op.DestPred,
+                op.DestPredInv,
+                op.AbsA,
+                op.AbsB,
+                op.NegA,
+                op.NegB,
+                writeCC: false,
+                isFP64: true);
+        }
+
         public static void FcmpR(EmitterContext context)
         {
             InstFcmpR op = context.GetOp<InstFcmpR>();
@@ -240,12 +390,15 @@ namespace Ryujinx.Graphics.Shader.Instructions
             bool negateA,
             bool negateB,
             bool boolFloat,
-            bool writeCC)
+            bool writeCC,
+            bool isFP64 = false)
         {
-            srcA = context.FPAbsNeg(srcA, absoluteA, negateA);
-            srcB = context.FPAbsNeg(srcB, absoluteB, negateB);
+            Instruction fpType = isFP64 ? Instruction.FP64 : Instruction.FP32;
+
+            srcA = context.FPAbsNeg(srcA, absoluteA, negateA, fpType);
+            srcB = context.FPAbsNeg(srcB, absoluteB, negateB, fpType);
 
-            Operand res = GetFPComparison(context, cmpOp, srcA, srcB);
+            Operand res = GetFPComparison(context, cmpOp, srcA, srcB, fpType);
             Operand pred = GetPredicate(context, srcPred, srcPredInv);
 
             res = GetPredLogicalOp(context, logicOp, res, pred);
@@ -282,12 +435,15 @@ namespace Ryujinx.Graphics.Shader.Instructions
             bool absoluteB,
             bool negateA,
             bool negateB,
-            bool writeCC)
+            bool writeCC,
+            bool isFP64 = false)
         {
-            srcA = context.FPAbsNeg(srcA, absoluteA, negateA);
-            srcB = context.FPAbsNeg(srcB, absoluteB, negateB);
+            Instruction fpType = isFP64 ? Instruction.FP64 : Instruction.FP32;
+
+            srcA = context.FPAbsNeg(srcA, absoluteA, negateA, fpType);
+            srcB = context.FPAbsNeg(srcB, absoluteB, negateB, fpType);
 
-            Operand p0Res = GetFPComparison(context, cmpOp, srcA, srcB);
+            Operand p0Res = GetFPComparison(context, cmpOp, srcA, srcB, fpType);
             Operand p1Res = context.BitwiseNot(p0Res);
             Operand pred = GetPredicate(context, srcPred, srcPredInv);
 
@@ -367,7 +523,7 @@ namespace Ryujinx.Graphics.Shader.Instructions
             context.Copy(Register(destPredInv, RegisterType.Predicate), p1Res);
         }
 
-        private static Operand GetFPComparison(EmitterContext context, FComp cond, Operand srcA, Operand srcB)
+        private static Operand GetFPComparison(EmitterContext context, FComp cond, Operand srcA, Operand srcB, Instruction fpType = Instruction.FP32)
         {
             Operand res;
 
@@ -381,7 +537,7 @@ namespace Ryujinx.Graphics.Shader.Instructions
             }
             else if (cond == FComp.Nan || cond == FComp.Num)
             {
-                res = context.BitwiseOr(context.IsNan(srcA), context.IsNan(srcB));
+                res = context.BitwiseOr(context.IsNan(srcA, fpType), context.IsNan(srcB, fpType));
 
                 if (cond == FComp.Num)
                 {
@@ -404,12 +560,12 @@ namespace Ryujinx.Graphics.Shader.Instructions
                     default: throw new ArgumentException($"Unexpected condition \"{cond}\".");
                 }
 
-                res = context.Add(inst | Instruction.FP32, Local(), srcA, srcB);
+                res = context.Add(inst | fpType, Local(), srcA, srcB);
 
                 if ((cond & FComp.Nan) != 0)
                 {
-                    res = context.BitwiseOr(res, context.IsNan(srcA));
-                    res = context.BitwiseOr(res, context.IsNan(srcB));
+                    res = context.BitwiseOr(res, context.IsNan(srcA, fpType));
+                    res = context.BitwiseOr(res, context.IsNan(srcB, fpType));
                 }
             }
 

Ryujinx.Graphics.Shader/Instructions/InstEmitFloatMinMax.cs

@@ -9,6 +9,39 @@ namespace Ryujinx.Graphics.Shader.Instructions
 {
     static partial class InstEmit
     {
+        public static void DmnmxR(EmitterContext context)
+        {
+            InstDmnmxR op = context.GetOp<InstDmnmxR>();
+
+            var srcA = GetSrcReg(context, op.SrcA, isFP64: true);
+            var srcB = GetSrcReg(context, op.SrcB, isFP64: true);
+            var srcPred = GetPredicate(context, op.SrcPred, op.SrcPredInv);
+
+            EmitFmnmx(context, srcA, srcB, srcPred, op.Dest, op.AbsA, op.AbsB, op.NegA, op.NegB, op.WriteCC, isFP64: true);
+        }
+
+        public static void DmnmxI(EmitterContext context)
+        {
+            InstDmnmxI op = context.GetOp<InstDmnmxI>();
+
+            var srcA = GetSrcReg(context, op.SrcA, isFP64: true);
+            var srcB = GetSrcImm(context, Imm20ToFloat(op.Imm20), isFP64: true);
+            var srcPred = GetPredicate(context, op.SrcPred, op.SrcPredInv);
+
+            EmitFmnmx(context, srcA, srcB, srcPred, op.Dest, op.AbsA, op.AbsB, op.NegA, op.NegB, op.WriteCC, isFP64: true);
+        }
+
+        public static void DmnmxC(EmitterContext context)
+        {
+            InstDmnmxC op = context.GetOp<InstDmnmxC>();
+
+            var srcA = GetSrcReg(context, op.SrcA, isFP64: true);
+            var srcB = GetSrcCbuf(context, op.CbufSlot, op.CbufOffset, isFP64: true);
+            var srcPred = GetPredicate(context, op.SrcPred, op.SrcPredInv);
+
+            EmitFmnmx(context, srcA, srcB, srcPred, op.Dest, op.AbsA, op.AbsB, op.NegA, op.NegB, op.WriteCC, isFP64: true);
+        }
+
         public static void FmnmxR(EmitterContext context)
         {
             InstFmnmxR op = context.GetOp<InstFmnmxR>();
@@ -52,19 +85,22 @@ namespace Ryujinx.Graphics.Shader.Instructions
             bool absoluteB,
             bool negateA,
             bool negateB,
-            bool writeCC)
+            bool writeCC,
+            bool isFP64 = false)
         {
-            srcA = context.FPAbsNeg(srcA, absoluteA, negateA);
-            srcB = context.FPAbsNeg(srcB, absoluteB, negateB);
+            Instruction fpType = isFP64 ? Instruction.FP64 : Instruction.FP32;
+
+            srcA = context.FPAbsNeg(srcA, absoluteA, negateA, fpType);
+            srcB = context.FPAbsNeg(srcB, absoluteB, negateB, fpType);
 
-            Operand resMin = context.FPMinimum(srcA, srcB);
-            Operand resMax = context.FPMaximum(srcA, srcB);
+            Operand resMin = context.FPMinimum(srcA, srcB, fpType);
+            Operand resMax = context.FPMaximum(srcA, srcB, fpType);
 
-            Operand dest = GetDest(rd);
+            Operand res = context.ConditionalSelect(srcPred, resMin, resMax);
 
-            context.Copy(dest, context.ConditionalSelect(srcPred, resMin, resMax));
+            SetDest(context, res, rd, isFP64);
 
-            SetFPZnFlags(context, dest, writeCC);
+            SetFPZnFlags(context, res, writeCC, fpType);
         }
     }
 }

Ryujinx.Graphics.Shader/Instructions/InstEmitHelper.cs

@@ -58,7 +58,7 @@ namespace Ryujinx.Graphics.Shader.Instructions
         {
             if (isFP64)
             {
-                return context.FP32ConvertToFP64(Const(imm));
+                return context.PackDouble2x32(Const(0), Const(imm));
             }
             else
             {
@@ -218,6 +218,19 @@ namespace Ryujinx.Graphics.Shader.Instructions
             return local;
         }
 
+        public static void SetDest(EmitterContext context, Operand value, int rd, bool isFP64)
+        {
+            if (isFP64)
+            {
+                context.Copy(GetDest(rd), context.UnpackDouble2x32Low(value));
+                context.Copy(GetDest2(rd), context.UnpackDouble2x32High(value));
+            }
+            else
+            {
+                context.Copy(GetDest(rd), value);
+            }
+        }
+
         public static int Imm16ToSInt(int imm16)
         {
             return (short)imm16;

Ryujinx.Graphics.Shader/Instructions/InstEmitMultifunction.cs

@@ -61,11 +61,23 @@ namespace Ryujinx.Graphics.Shader.Instructions
                     res = context.FPReciprocalSquareRoot(res);
                     break;
 
+                case MufuOp.Rcp64h:
+                    res = context.PackDouble2x32(OperandHelper.Const(0), res);
+                    res = context.UnpackDouble2x32High(context.FPReciprocal(res, Instruction.FP64));
+                    break;
+
+                case MufuOp.Rsq64h:
+                    res = context.PackDouble2x32(OperandHelper.Const(0), res);
+                    res = context.UnpackDouble2x32High(context.FPReciprocalSquareRoot(res, Instruction.FP64));
+                    break;
+
                 case MufuOp.Sqrt:
                     res = context.FPSquareRoot(res);
                     break;
 
-                default: /* TODO */ break;
+                default:
+                    context.Config.GpuAccessor.Log($"Invalid MUFU operation \"{op.MufuOp}\".");
+                    break;
             }
 
             context.Copy(GetDest(op.Dest), context.FPSaturate(res, op.Sat));

Ryujinx.Graphics.Shader/StructuredIr/InstructionInfo.cs

@@ -87,7 +87,7 @@ namespace Ryujinx.Graphics.Shader.StructuredIr
             Add(Instruction.ImageLoad,                VariableType.F32);
             Add(Instruction.ImageStore,               VariableType.None);
             Add(Instruction.ImageAtomic,              VariableType.S32);
-            Add(Instruction.IsNan,                    VariableType.Bool,   VariableType.F32);
+            Add(Instruction.IsNan,                    VariableType.Bool,   VariableType.Scalar);
             Add(Instruction.LoadAttribute,            VariableType.F32,    VariableType.S32,    VariableType.S32,    VariableType.S32);
             Add(Instruction.LoadConstant,             VariableType.F32,    VariableType.S32,    VariableType.S32);
             Add(Instruction.LoadGlobal,               VariableType.U32,    VariableType.S32,    VariableType.S32);

Ryujinx.Graphics.Shader/Translation/EmitterContextInsts.cs

@@ -1,4 +1,5 @@
 using Ryujinx.Graphics.Shader.IntermediateRepresentation;
+using System;
 
 using static Ryujinx.Graphics.Shader.IntermediateRepresentation.OperandHelper;
 
@@ -271,9 +272,9 @@ namespace Ryujinx.Graphics.Shader.Translation
             return context.Add(Instruction.FP32 | Instruction.Cosine, Local(), a);
         }
 
-        public static Operand FPDivide(this EmitterContext context, Operand a, Operand b)
+        public static Operand FPDivide(this EmitterContext context, Operand a, Operand b, Instruction fpType = Instruction.FP32)
         {
-            return context.Add(Instruction.FP32 | Instruction.Divide, Local(), a, b);
+            return context.Add(fpType | Instruction.Divide, Local(), a, b);
         }
 
         public static Operand FPExponentB2(this EmitterContext context, Operand a)
@@ -301,9 +302,9 @@ namespace Ryujinx.Graphics.Shader.Translation
             return context.Add(fpType | Instruction.Maximum, Local(), a, b);
         }
 
-        public static Operand FPMinimum(this EmitterContext context, Operand a, Operand b)
+        public static Operand FPMinimum(this EmitterContext context, Operand a, Operand b, Instruction fpType = Instruction.FP32)
         {
-            return context.Add(Instruction.FP32 | Instruction.Minimum, Local(), a, b);
+            return context.Add(fpType | Instruction.Minimum, Local(), a, b);
         }
 
         public static Operand FPMultiply(this EmitterContext context, Operand a, Operand b, Instruction fpType = Instruction.FP32)
@@ -326,14 +327,14 @@ namespace Ryujinx.Graphics.Shader.Translation
             return context.Add(fpType | Instruction.Negate, Local(), a);
         }
 
-        public static Operand FPReciprocal(this EmitterContext context, Operand a)
+        public static Operand FPReciprocal(this EmitterContext context, Operand a, Instruction fpType = Instruction.FP32)
         {
-            return context.FPDivide(ConstF(1), a);
+            return context.FPDivide(fpType == Instruction.FP64 ? context.PackDouble2x32(1.0) : ConstF(1), a, fpType);
         }
 
-        public static Operand FPReciprocalSquareRoot(this EmitterContext context, Operand a)
+        public static Operand FPReciprocalSquareRoot(this EmitterContext context, Operand a, Instruction fpType = Instruction.FP32)
         {
-            return context.Add(Instruction.FP32 | Instruction.ReciprocalSquareRoot, Local(), a);
+            return context.Add(fpType | Instruction.ReciprocalSquareRoot, Local(), a);
         }
 
         public static Operand FPRound(this EmitterContext context, Operand a, Instruction fpType = Instruction.FP32)
@@ -353,7 +354,9 @@ namespace Ryujinx.Graphics.Shader.Translation
 
         public static Operand FPSaturate(this EmitterContext context, Operand a, Instruction fpType = Instruction.FP32)
         {
-            return context.Add(fpType | Instruction.Clamp, Local(), a, ConstF(0), ConstF(1));
+            return fpType == Instruction.FP64
+                ? context.Add(fpType | Instruction.Clamp, Local(), a, context.PackDouble2x32(0.0), context.PackDouble2x32(1.0))
+                : context.Add(fpType | Instruction.Clamp, Local(), a, ConstF(0), ConstF(1));
         }
 
         public static Operand FPSine(this EmitterContext context, Operand a)
@@ -541,9 +544,9 @@ namespace Ryujinx.Graphics.Shader.Translation
             return context.Add(Instruction.Subtract, Local(), a, b);
         }
 
-        public static Operand IsNan(this EmitterContext context, Operand a)
+        public static Operand IsNan(this EmitterContext context, Operand a, Instruction fpType = Instruction.FP32)
         {
-            return context.Add(Instruction.IsNan, Local(), a);
+            return context.Add(fpType | Instruction.IsNan, Local(), a);
         }
 
         public static Operand LoadAttribute(this EmitterContext context, Operand a, Operand b, Operand c)
@@ -595,6 +598,13 @@ namespace Ryujinx.Graphics.Shader.Translation
             return context.Add(Instruction.MultiplyHighU32, Local(), a, b);
         }
 
+        public static Operand PackDouble2x32(this EmitterContext context, double value)
+        {
+            long valueAsLong = BitConverter.DoubleToInt64Bits(value);
+
+            return context.Add(Instruction.PackDouble2x32, Local(), Const((int)valueAsLong), Const((int)(valueAsLong >> 32)));
+        }
+
         public static Operand PackDouble2x32(this EmitterContext context, Operand a, Operand b)
         {
             return context.Add(Instruction.PackDouble2x32, Local(), a, b);