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Implement BFI, BRK, FLO, FSWZADD, PBK, SHFL and TXD shader instructions, misc. fixes

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This commit is contained in:
gdk 2019-10-31 00:29:22 -03:00 committed by Thog
parent d786d8d2b9
commit 278a4c317c
38 changed files with 972 additions and 166 deletions
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139
Ryujinx.Common/Utilities/EmbeddedResources.cs Normal file
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@ -0,0 +1,139 @@
using System;
using System.IO;
using System.Reflection;
using System.Threading.Tasks;
namespace Ryujinx.Common
{
public static class EmbeddedResources
{
private readonly static Assembly ResourceAssembly;
static EmbeddedResources()
{
ResourceAssembly = Assembly.GetAssembly(typeof(EmbeddedResources));
}
public static byte[] Read(string filename)
{
var (assembly, path) = ResolveManifestPath(filename);
return Read(assembly, path);
}
public static Task<byte[]> ReadAsync(string filename)
{
var (assembly, path) = ResolveManifestPath(filename);
return ReadAsync(assembly, path);
}
public static byte[] Read(Assembly assembly, string filename)
{
using (var stream = GetStream(assembly, filename))
{
if (stream == null)
return null;
using (var mem = new MemoryStream())
{
stream.CopyTo(mem);
return mem.ToArray();
}
}
}
public async static Task<byte[]> ReadAsync(Assembly assembly, string filename)
{
using (var stream = GetStream(assembly, filename))
{
if (stream == null)
return null;
using (var mem = new MemoryStream())
{
await stream.CopyToAsync(mem);
return mem.ToArray();
}
}
}
public static string ReadAllText(string filename)
{
var (assembly, path) = ResolveManifestPath(filename);
return ReadAllText(assembly, path);
}
public static Task<string> ReadAllTextAsync(string filename)
{
var (assembly, path) = ResolveManifestPath(filename);
return ReadAllTextAsync(assembly, path);
}
public static string ReadAllText(Assembly assembly, string filename)
{
using (var stream = GetStream(assembly, filename))
{
if (stream == null)
return null;
using (var reader = new StreamReader(stream))
{
return reader.ReadToEnd();
}
}
}
public async static Task<string> ReadAllTextAsync(Assembly assembly, string filename)
{
using (var stream = GetStream(assembly, filename))
{
if (stream == null)
return null;
using (var reader = new StreamReader(stream))
{
return await reader.ReadToEndAsync();
}
}
}
public static Stream GetStream(string filename)
{
var (assembly, path) = ResolveManifestPath(filename);
return GetStream(assembly, filename);
}
public static Stream GetStream(Assembly assembly, string filename)
{
var namespace_ = assembly.GetName().Name;
var manifestUri = namespace_ + "." + filename.Replace('/', '.');
var stream = assembly.GetManifestResourceStream(manifestUri);
if (stream == null)
return null;
return stream;
}
private static (Assembly, string) ResolveManifestPath(string filename)
{
var segments = filename.Split(new[] { '/' }, 2, StringSplitOptions.RemoveEmptyEntries);
if (segments.Length >= 2)
{
foreach (var assembly in AppDomain.CurrentDomain.GetAssemblies())
{
if (assembly.GetName().Name == segments[0])
return (assembly, segments[1]);
}
}
return (EmbeddedResources.ResourceAssembly, filename);
}
}
}

7
Ryujinx.Graphics.Shader/CodeGen/Glsl/CodeGenContext.cs
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@ -5,7 +5,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
{
class CodeGenContext
{
private const string Tab = " ";
public const string Tab = " ";
public ShaderConfig Config { get; }
@ -90,5 +90,10 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
return indentation;
}
public string GetTabString()
{
return Tab;
}
}
}

35
Ryujinx.Graphics.Shader/CodeGen/Glsl/Declarations.cs
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@ -1,3 +1,4 @@
using Ryujinx.Common;
using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.StructuredIr;
using Ryujinx.Graphics.Shader.Translation;
@ -15,6 +16,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
public static void Declare(CodeGenContext context, StructuredProgramInfo info)
{
context.AppendLine("#version 420 core");
context.AppendLine("#extension GL_ARB_shader_ballot : enable");
context.AppendLine("#extension GL_ARB_shader_storage_buffer_object : enable");
if (context.Config.Stage == ShaderStage.Compute)
@ -131,6 +133,31 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
$"local_size_z = {localSizeZ}) in;");
context.AppendLine();
}
if ((info.HelperFunctionsMask & HelperFunctionsMask.Shuffle) != 0)
{
AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/Shuffle.glsl");
}
if ((info.HelperFunctionsMask & HelperFunctionsMask.ShuffleDown) != 0)
{
AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleDown.glsl");
}
if ((info.HelperFunctionsMask & HelperFunctionsMask.ShuffleUp) != 0)
{
AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleUp.glsl");
}
if ((info.HelperFunctionsMask & HelperFunctionsMask.ShuffleXor) != 0)
{
AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleXor.glsl");
}
if ((info.HelperFunctionsMask & HelperFunctionsMask.SwizzleAdd) != 0)
{
AppendHelperFunction(context, "Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/SwizzleAdd.glsl");
}
}
public static void DeclareLocals(CodeGenContext context, StructuredProgramInfo info)
@ -321,6 +348,14 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
}
}
private static void AppendHelperFunction(CodeGenContext context, string filename)
{
string code = EmbeddedResources.ReadAllText(filename);
context.AppendLine(code.Replace("\t", CodeGenContext.Tab));
context.AppendLine();
}
private static string GetSamplerTypeName(SamplerType type)
{
string typeName;

9
Ryujinx.Graphics.Shader/CodeGen/Glsl/GlslGenerator.cs
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@ -33,6 +33,15 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
Declarations.DeclareLocals(context, info);
// Some games will leave some elements of gl_Position uninitialized,
// in those cases, the elements will contain undefined values according
// to the spec, but on NVIDIA they seems to be always initialized to (0, 0, 0, 1),
// so we do explicit initialization to avoid UB on non-NVIDIA gpus.
if (context.Config.Stage == ShaderStage.Vertex)
{
context.AppendLine("gl_Position = vec4(0.0, 0.0, 0.0, 1.0);");
}
// Ensure that unused attributes are set, otherwise the downstream
// compiler may eliminate them.
// (Not needed for fragment shader as it is the last stage).

11
Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/HelperFunctionNames.cs Normal file
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@ -0,0 +1,11 @@
namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
{
static class HelperFunctionNames
{
public static string Shuffle = "Helper_Shuffle";
public static string ShuffleDown = "Helper_ShuffleDown";
public static string ShuffleUp = "Helper_ShuffleUp";
public static string ShuffleXor = "Helper_ShuffleXor";
public static string SwizzleAdd = "Helper_SwizzleAdd";
}
}

9
Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/Shuffle.glsl Normal file
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@ -0,0 +1,9 @@
float Helper_Shuffle(float x, uint index, uint mask)
{
uint clamp = mask & 0x1fu;
uint segMask = (mask >> 8) & 0x1fu;
uint minThreadId = gl_SubGroupInvocationARB & segMask;
uint maxThreadId = minThreadId | (clamp & ~segMask);
uint srcThreadId = (index & ~segMask) | minThreadId;
return (srcThreadId <= maxThreadId) ? readInvocationARB(x, srcThreadId) : x;
}

9
Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleDown.glsl Normal file
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@ -0,0 +1,9 @@
float Helper_ShuffleDown(float x, uint index, uint mask)
{
uint clamp = mask & 0x1fu;
uint segMask = (mask >> 8) & 0x1fu;
uint minThreadId = gl_SubGroupInvocationARB & segMask;
uint maxThreadId = minThreadId | (clamp & ~segMask);
uint srcThreadId = gl_SubGroupInvocationARB + index;
return (srcThreadId <= maxThreadId) ? readInvocationARB(x, srcThreadId) : x;
}

8
Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleUp.glsl Normal file
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@ -0,0 +1,8 @@
float Helper_ShuffleUp(float x, uint index, uint mask)
{
uint clamp = mask & 0x1fu;
uint segMask = (mask >> 8) & 0x1fu;
uint minThreadId = gl_SubGroupInvocationARB & segMask;
uint srcThreadId = gl_SubGroupInvocationARB - index;
return (srcThreadId >= minThreadId) ? readInvocationARB(x, srcThreadId) : x;
}

9
Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleXor.glsl Normal file
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@ -0,0 +1,9 @@
float Helper_ShuffleXor(float x, uint index, uint mask)
{
uint clamp = mask & 0x1fu;
uint segMask = (mask >> 8) & 0x1fu;
uint minThreadId = gl_SubGroupInvocationARB & segMask;
uint maxThreadId = minThreadId | (clamp & ~segMask);
uint srcThreadId = gl_SubGroupInvocationARB ^ index;
return (srcThreadId <= maxThreadId) ? readInvocationARB(x, srcThreadId) : x;
}

7
Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/SwizzleAdd.glsl Normal file
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@ -0,0 +1,7 @@
float Helper_SwizzleAdd(float x, float y, int mask)
{
vec4 xLut = vec4(1.0, -1.0, 1.0, 0.0);
vec4 yLut = vec4(1.0, 1.0, -1.0, 1.0);
int lutIdx = mask >> int(gl_SubGroupInvocationARB & 3u) * 2;
return x * xLut[lutIdx] + y * yLut[lutIdx];
}

10
Ryujinx.Graphics.Shader/CodeGen/Glsl/Instructions/InstGenHelper.cs
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@ -15,6 +15,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
Add(Instruction.Absolute, InstType.CallUnary, "abs");
Add(Instruction.Add, InstType.OpBinaryCom, "+", 2);
Add(Instruction.BitCount, InstType.CallUnary, "bitCount");
Add(Instruction.BitfieldExtractS32, InstType.CallTernary, "bitfieldExtract");
Add(Instruction.BitfieldExtractU32, InstType.CallTernary, "bitfieldExtract");
Add(Instruction.BitfieldInsert, InstType.CallQuaternary, "bitfieldInsert");
@ -41,11 +42,15 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
Add(Instruction.ConvertS32ToFP, InstType.CallUnary, "float");
Add(Instruction.ConvertU32ToFP, InstType.CallUnary, "float");
Add(Instruction.Cosine, InstType.CallUnary, "cos");
Add(Instruction.Ddx, InstType.CallUnary, "dFdx");
Add(Instruction.Ddy, InstType.CallUnary, "dFdy");
Add(Instruction.Discard, InstType.OpNullary, "discard");
Add(Instruction.Divide, InstType.OpBinary, "/", 1);
Add(Instruction.EmitVertex, InstType.CallNullary, "EmitVertex");
Add(Instruction.EndPrimitive, InstType.CallNullary, "EndPrimitive");
Add(Instruction.ExponentB2, InstType.CallUnary, "exp2");
Add(Instruction.FindFirstSetS32, InstType.CallUnary, "findMSB");
Add(Instruction.FindFirstSetU32, InstType.CallUnary, "findMSB");
Add(Instruction.Floor, InstType.CallUnary, "floor");
Add(Instruction.FusedMultiplyAdd, InstType.CallTernary, "fma");
Add(Instruction.ImageLoad, InstType.Special);
@ -66,6 +71,10 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
Add(Instruction.ShiftLeft, InstType.OpBinary, "<<", 3);
Add(Instruction.ShiftRightS32, InstType.OpBinary, ">>", 3);
Add(Instruction.ShiftRightU32, InstType.OpBinary, ">>", 3);
Add(Instruction.Shuffle, InstType.CallTernary, HelperFunctionNames.Shuffle);
Add(Instruction.ShuffleDown, InstType.CallTernary, HelperFunctionNames.ShuffleDown);
Add(Instruction.ShuffleUp, InstType.CallTernary, HelperFunctionNames.ShuffleUp);
Add(Instruction.ShuffleXor, InstType.CallTernary, HelperFunctionNames.ShuffleXor);
Add(Instruction.Maximum, InstType.CallBinary, "max");
Add(Instruction.MaximumU32, InstType.CallBinary, "max");
Add(Instruction.Minimum, InstType.CallBinary, "min");
@ -80,6 +89,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
Add(Instruction.StoreLocal, InstType.Special);
Add(Instruction.StoreStorage, InstType.Special);
Add(Instruction.Subtract, InstType.OpBinary, "-", 2);
Add(Instruction.SwizzleAdd, InstType.CallTernary, HelperFunctionNames.SwizzleAdd);
Add(Instruction.TextureSample, InstType.Special);
Add(Instruction.TextureSize, InstType.Special);
Add(Instruction.Truncate, InstType.CallUnary, "trunc");

30
Ryujinx.Graphics.Shader/CodeGen/Glsl/Instructions/InstGenMemory.cs
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@ -166,6 +166,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
bool isBindless = (texOp.Flags & TextureFlags.Bindless) != 0;
bool isGather = (texOp.Flags & TextureFlags.Gather) != 0;
bool hasDerivatives = (texOp.Flags & TextureFlags.Derivatives) != 0;
bool intCoords = (texOp.Flags & TextureFlags.IntCoords) != 0;
bool hasLodBias = (texOp.Flags & TextureFlags.LodBias) != 0;
bool hasLodLevel = (texOp.Flags & TextureFlags.LodLevel) != 0;
@ -190,6 +191,10 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
{
texCall += "Gather";
}
else if (hasDerivatives)
{
texCall += "Grad";
}
else if (hasLodLevel && !intCoords)
{
texCall += "Lod";
@ -297,6 +302,31 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
Append(AssemblePVector(pCount));
string AssembleDerivativesVector(int count)
{
if (count > 1)
{
string[] elems = new string[count];
for (int index = 0; index < count; index++)
{
elems[index] = Src(VariableType.F32);
}
return "vec" + count + "(" + string.Join(", ", elems) + ")";
}
else
{
return Src(VariableType.F32);
}
}
if (hasDerivatives)
{
Append(AssembleDerivativesVector(coordsCount)); // dPdx
Append(AssembleDerivativesVector(coordsCount)); // dPdy
}
if (hasExtraCompareArg)
{
Append(Src(VariableType.F32));

2
Ryujinx.Graphics.Shader/Decoders/Decoder.cs
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@ -241,7 +241,7 @@ namespace Ryujinx.Graphics.Shader.Decoders
private static bool IsBranch(OpCode opCode)
{
return (opCode is OpCodeBranch && opCode.Emitter != InstEmit.Ssy) ||
return (opCode is OpCodeBranch opBranch && !opBranch.PushTarget) ||
opCode is OpCodeSync ||
opCode is OpCodeExit;
}

4
Ryujinx.Graphics.Shader/Decoders/OpCodeBranch.cs
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@ -6,9 +6,13 @@ namespace Ryujinx.Graphics.Shader.Decoders
{
public int Offset { get; }
public bool PushTarget { get; protected set; }
public OpCodeBranch(InstEmitter emitter, ulong address, long opCode) : base(emitter, address, opCode)
{
Offset = ((int)(opCode >> 20) << 8) >> 8;
PushTarget = false;
}
public ulong GetAbsoluteAddress()

40
Ryujinx.Graphics.Shader/Decoders/OpCodeShuffle.cs Normal file
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@ -0,0 +1,40 @@
using Ryujinx.Graphics.Shader.Instructions;
namespace Ryujinx.Graphics.Shader.Decoders
{
class OpCodeShuffle : OpCode, IOpCodeRd, IOpCodeRa
{
public Register Rd { get; }
public Register Ra { get; }
public Register Rb { get; }
public Register Rc { get; }
public int ImmediateB { get; }
public int ImmediateC { get; }
public bool IsBImmediate { get; }
public bool IsCImmediate { get; }
public ShuffleType ShuffleType { get; }
public Register Predicate48 { get; }
public OpCodeShuffle(InstEmitter emitter, ulong address, long opCode) : base(emitter, address, opCode)
{
Rd = new Register(opCode.Extract(0, 8), RegisterType.Gpr);
Ra = new Register(opCode.Extract(8, 8), RegisterType.Gpr);
Rb = new Register(opCode.Extract(20, 8), RegisterType.Gpr);
Rc = new Register(opCode.Extract(39, 8), RegisterType.Gpr);
ImmediateB = opCode.Extract(20, 5);
ImmediateC = opCode.Extract(34, 13);
IsBImmediate = opCode.Extract(28);
IsCImmediate = opCode.Extract(29);
ShuffleType = (ShuffleType)opCode.Extract(30, 2);
Predicate48 = new Register(opCode.Extract(48, 3), RegisterType.Predicate);
}
}
}

2
Ryujinx.Graphics.Shader/Decoders/OpCodeSsy.cs
View file

@ -15,6 +15,8 @@ namespace Ryujinx.Graphics.Shader.Decoders
Predicate = new Register(RegisterConsts.PredicateTrueIndex, RegisterType.Predicate);
InvertPredicate = false;
PushTarget = true;
}
}
}

14
Ryujinx.Graphics.Shader/Decoders/OpCodeTable.cs
View file

@ -35,7 +35,12 @@ namespace Ryujinx.Graphics.Shader.Decoders
Set("0100110000000x", InstEmit.Bfe, typeof(OpCodeAluCbuf));
Set("0011100x00000x", InstEmit.Bfe, typeof(OpCodeAluImm));
Set("0101110000000x", InstEmit.Bfe, typeof(OpCodeAluReg));
Set("0100101111110x", InstEmit.Bfi, typeof(OpCodeAluCbuf));
Set("0011011x11110x", InstEmit.Bfi, typeof(OpCodeAluImm));
Set("0101001111110x", InstEmit.Bfi, typeof(OpCodeAluRegCbuf));
Set("0101101111110x", InstEmit.Bfi, typeof(OpCodeAluReg));
Set("111000100100xx", InstEmit.Bra, typeof(OpCodeBranch));
Set("111000110100xx", InstEmit.Brk, typeof(OpCodeSync));
Set("0101000010100x", InstEmit.Csetp, typeof(OpCodePsetp));
Set("111000110000xx", InstEmit.Exit, typeof(OpCodeExit));
Set("0100110010101x", InstEmit.F2F, typeof(OpCodeFArithCbuf));
@ -52,6 +57,9 @@ namespace Ryujinx.Graphics.Shader.Decoders
Set("0011001x1xxxxx", InstEmit.Ffma, typeof(OpCodeFArithImm));
Set("010100011xxxxx", InstEmit.Ffma, typeof(OpCodeFArithRegCbuf));
Set("010110011xxxxx", InstEmit.Ffma, typeof(OpCodeFArithReg));
Set("0100110000110x", InstEmit.Flo, typeof(OpCodeAluCbuf));
Set("0011100x00110x", InstEmit.Flo, typeof(OpCodeAluImm));
Set("0101110000110x", InstEmit.Flo, typeof(OpCodeAluReg));
Set("0100110001100x", InstEmit.Fmnmx, typeof(OpCodeFArithCbuf));
Set("0011100x01100x", InstEmit.Fmnmx, typeof(OpCodeFArithImm));
Set("0101110001100x", InstEmit.Fmnmx, typeof(OpCodeFArithReg));
@ -65,6 +73,7 @@ namespace Ryujinx.Graphics.Shader.Decoders
Set("010010111011xx", InstEmit.Fsetp, typeof(OpCodeSetCbuf));
Set("0011011x1011xx", InstEmit.Fsetp, typeof(OpCodeFsetImm));
Set("010110111011xx", InstEmit.Fsetp, typeof(OpCodeSetReg));
Set("0101000011111x", InstEmit.Fswzadd, typeof(OpCodeAluReg));
Set("0111101x1xxxxx", InstEmit.Hadd2, typeof(OpCodeAluCbuf));
Set("0111101x0xxxxx", InstEmit.Hadd2, typeof(OpCodeAluImm2x10));
Set("0010110xxxxxxx", InstEmit.Hadd2, typeof(OpCodeAluImm32));
@ -126,6 +135,7 @@ namespace Ryujinx.Graphics.Shader.Decoders
Set("0101110010011x", InstEmit.Mov, typeof(OpCodeAluReg));
Set("0101000010000x", InstEmit.Mufu, typeof(OpCodeFArith));
Set("1111101111100x", InstEmit.Out, typeof(OpCode));
Set("111000101010xx", InstEmit.Pbk, typeof(OpCodeSsy));
Set("0101000010010x", InstEmit.Psetp, typeof(OpCodePsetp));
Set("0100110010010x", InstEmit.Rro, typeof(OpCodeFArithCbuf));
Set("0011100x10010x", InstEmit.Rro, typeof(OpCodeFArithImm));
@ -134,6 +144,7 @@ namespace Ryujinx.Graphics.Shader.Decoders
Set("0100110010100x", InstEmit.Sel, typeof(OpCodeAluCbuf));
Set("0011100x10100x", InstEmit.Sel, typeof(OpCodeAluImm));
Set("0101110010100x", InstEmit.Sel, typeof(OpCodeAluReg));
Set("1110111100010x", InstEmit.Shfl, typeof(OpCodeShuffle));
Set("0100110001001x", InstEmit.Shl, typeof(OpCodeAluCbuf));
Set("0011100x01001x", InstEmit.Shl, typeof(OpCodeAluImm));
Set("0101110001001x", InstEmit.Shl, typeof(OpCodeAluReg));
@ -149,10 +160,11 @@ namespace Ryujinx.Graphics.Shader.Decoders
Set("1101111010111x", InstEmit.TexB, typeof(OpCodeTexB));
Set("1101x00xxxxxxx", InstEmit.Texs, typeof(OpCodeTexs));
Set("1101x01xxxxxxx", InstEmit.Texs, typeof(OpCodeTlds));
Set("1101x11100xxxx", InstEmit.Texs, typeof(OpCodeTld4s));
Set("11011111x0xxxx", InstEmit.Texs, typeof(OpCodeTld4s));
Set("11011100xx111x", InstEmit.Tld, typeof(OpCodeTld));
Set("11011101xx111x", InstEmit.TldB, typeof(OpCodeTld));
Set("110010xxxx111x", InstEmit.Tld4, typeof(OpCodeTld4));
Set("110111100x1110", InstEmit.Txd, typeof(OpCodeTxd));
Set("1101111101001x", InstEmit.Txq, typeof(OpCodeTex));
Set("1101111101010x", InstEmit.TxqB, typeof(OpCodeTex));
Set("01011111xxxxxx", InstEmit.Vmad, typeof(OpCodeVideo));

2
Ryujinx.Graphics.Shader/Decoders/OpCodeTextureScalar.cs
View file

@ -39,7 +39,7 @@ namespace Ryujinx.Graphics.Shader.Decoders
protected int RawType;
public bool IsFp16 { get; }
public bool IsFp16 { get; protected set; }
public OpCodeTextureScalar(InstEmitter emitter, ulong address, long opCode) : base(emitter, address, opCode)
{

2
Ryujinx.Graphics.Shader/Decoders/OpCodeTld4s.cs
View file

@ -16,6 +16,8 @@ namespace Ryujinx.Graphics.Shader.Decoders
GatherCompIndex = opCode.Extract(52, 2);
IsFp16 = opCode.Extract(55);
ComponentMask = Rd1.IsRZ ? 3 : 0xf;
}
}

18
Ryujinx.Graphics.Shader/Decoders/OpCodeTxd.cs Normal file
View file

@ -0,0 +1,18 @@
using Ryujinx.Graphics.Shader.Instructions;
namespace Ryujinx.Graphics.Shader.Decoders
{
class OpCodeTxd : OpCodeTexture
{
public bool IsBindless { get; }
public OpCodeTxd(InstEmitter emitter, ulong address, long opCode) : base(emitter, address, opCode)
{
HasOffset = opCode.Extract(35);
IsBindless = opCode.Extract(54);
LodMode = TextureLodMode.None;
}
}
}

10
Ryujinx.Graphics.Shader/Decoders/ShuffleType.cs Normal file
View file

@ -0,0 +1,10 @@
namespace Ryujinx.Graphics.Shader.Decoders
{
enum ShuffleType
{
Indexed = 0,
Up = 1,
Down = 2,
Butterfly = 3
}
}

1
Ryujinx.Graphics.Shader/Decoders/SystemRegister.cs
View file

@ -2,6 +2,7 @@ namespace Ryujinx.Graphics.Shader.Decoders
{
enum SystemRegister
{
YDirection = 0x12,
ThreadId = 0x20,
ThreadIdX = 0x21,
ThreadIdY = 0x22,

39
Ryujinx.Graphics.Shader/Instructions/InstEmitAlu.cs
View file

@ -39,6 +39,23 @@ namespace Ryujinx.Graphics.Shader.Instructions
// TODO: CC, X, corner cases
}
public static void Bfi(EmitterContext context)
{
OpCodeAlu op = (OpCodeAlu)context.CurrOp;
Operand srcA = GetSrcA(context);
Operand srcB = GetSrcB(context);
Operand srcC = GetSrcC(context);
Operand position = context.BitwiseAnd(srcB, Const(0xff));
Operand size = context.BitfieldExtractU32(srcB, Const(8), Const(8));
Operand res = context.BitfieldInsert(srcC, srcA, position, size);
context.Copy(GetDest(context), res);
}
public static void Csetp(EmitterContext context)
{
OpCodePsetp op = (OpCodePsetp)context.CurrOp;
@ -58,6 +75,28 @@ namespace Ryujinx.Graphics.Shader.Instructions
context.Copy(Register(op.Predicate0), p1Res);
}
public static void Flo(EmitterContext context)
{
OpCodeAlu op = (OpCodeAlu)context.CurrOp;
bool invert = op.RawOpCode.Extract(40);
bool countZeros = op.RawOpCode.Extract(41);
bool isSigned = op.RawOpCode.Extract(48);
Operand srcB = context.BitwiseNot(GetSrcB(context), invert);
Operand res = isSigned
? context.FindFirstSetS32(srcB)
: context.FindFirstSetU32(srcB);
if (countZeros)
{
res = context.BitwiseExclusiveOr(res, Const(31));
}
context.Copy(GetDest(context), res);
}
public static void Iadd(EmitterContext context)
{
OpCodeAlu op = (OpCodeAlu)context.CurrOp;

16
Ryujinx.Graphics.Shader/Instructions/InstEmitFArith.cs
View file

@ -180,6 +180,22 @@ namespace Ryujinx.Graphics.Shader.Instructions
context.Copy(Register(op.Predicate0), p1Res);
}
public static void Fswzadd(EmitterContext context)
{
OpCodeAlu op = (OpCodeAlu)context.CurrOp;
int mask = op.RawOpCode.Extract(28, 8);
Operand srcA = GetSrcA(context);
Operand srcB = GetSrcB(context);
Operand dest = GetDest(context);
context.Copy(dest, context.FPSwizzleAdd(srcA, srcB, mask));
SetFPZnFlags(context, dest, op.SetCondCode);
}
public static void Hadd2(EmitterContext context)
{
Hadd2Hmul2Impl(context, isAdd: true);

22
Ryujinx.Graphics.Shader/Instructions/InstEmitFlow.cs
View file

@ -15,6 +15,11 @@ namespace Ryujinx.Graphics.Shader.Instructions
EmitBranch(context, context.CurrBlock.Branch.Address);
}
public static void Brk(EmitterContext context)
{
EmitBrkOrSync(context);
}
public static void Exit(EmitterContext context)
{
OpCodeExit op = (OpCodeExit)context.CurrOp;
@ -32,7 +37,22 @@ namespace Ryujinx.Graphics.Shader.Instructions
context.Discard();
}
public static void Pbk(EmitterContext context)
{
EmitPbkOrSsy(context);
}
public static void Ssy(EmitterContext context)
{
EmitPbkOrSsy(context);
}
public static void Sync(EmitterContext context)
{
EmitBrkOrSync(context);
}
private static void EmitPbkOrSsy(EmitterContext context)
{
OpCodeSsy op = (OpCodeSsy)context.CurrOp;
@ -48,7 +68,7 @@ namespace Ryujinx.Graphics.Shader.Instructions
}
}
public static void Sync(EmitterContext context)
private static void EmitBrkOrSync(EmitterContext context)
{
OpCodeSync op = (OpCodeSync)context.CurrOp;

35
Ryujinx.Graphics.Shader/Instructions/InstEmitMove.cs
View file

@ -27,6 +27,9 @@ namespace Ryujinx.Graphics.Shader.Instructions
switch (sysReg)
{
// TODO: Use value from Y direction GPU register.
case SystemRegister.YDirection: src = ConstF(1); break;
case SystemRegister.ThreadId:
{
Operand tidX = Attribute(AttributeConsts.ThreadIdX);
@ -67,5 +70,37 @@ namespace Ryujinx.Graphics.Shader.Instructions
context.Copy(GetDest(context), res);
}
public static void Shfl(EmitterContext context)
{
OpCodeShuffle op = (OpCodeShuffle)context.CurrOp;
Operand pred = Register(op.Predicate48);
Operand srcA = GetSrcA(context);
Operand srcB = op.IsBImmediate ? Const(op.ImmediateB) : Register(op.Rb);
Operand srcC = op.IsCImmediate ? Const(op.ImmediateC) : Register(op.Rc);
Operand res = null;
switch (op.ShuffleType)
{
case ShuffleType.Indexed:
res = context.Shuffle(srcA, srcB, srcC);
break;
case ShuffleType.Up:
res = context.ShuffleUp(srcA, srcB, srcC);
break;
case ShuffleType.Down:
res = context.ShuffleDown(srcA, srcB, srcC);
break;
case ShuffleType.Butterfly:
res = context.ShuffleXor(srcA, srcB, srcC);
break;
}
context.Copy(GetDest(context), res);
}
}
}

127
Ryujinx.Graphics.Shader/Instructions/InstEmitTexture.cs
View file

@ -102,22 +102,22 @@ namespace Ryujinx.Graphics.Shader.Instructions
public static void Tex(EmitterContext context)
{
Tex(context, TextureFlags.None);
EmitTextureSample(context, TextureFlags.None);
}
public static void TexB(EmitterContext context)
{
Tex(context, TextureFlags.Bindless);
EmitTextureSample(context, TextureFlags.Bindless);
}
public static void Tld(EmitterContext context)
{
Tex(context, TextureFlags.IntCoords);
EmitTextureSample(context, TextureFlags.IntCoords);
}
public static void TldB(EmitterContext context)
{
Tex(context, TextureFlags.IntCoords | TextureFlags.Bindless);
EmitTextureSample(context, TextureFlags.IntCoords | TextureFlags.Bindless);
}
public static void Texs(EmitterContext context)
@ -512,17 +512,128 @@ namespace Ryujinx.Graphics.Shader.Instructions
}
}
public static void Txd(EmitterContext context)
{
OpCodeTxd op = (OpCodeTxd)context.CurrOp;
if (op.Rd.IsRZ)
{
return;
}
int raIndex = op.Ra.Index;
int rbIndex = op.Rb.Index;
Operand Ra()
{
if (raIndex > RegisterConsts.RegisterZeroIndex)
{
return Const(0);
}
return context.Copy(Register(raIndex++, RegisterType.Gpr));
}
Operand Rb()
{
if (rbIndex > RegisterConsts.RegisterZeroIndex)
{
return Const(0);
}
return context.Copy(Register(rbIndex++, RegisterType.Gpr));
}
TextureFlags flags = TextureFlags.Derivatives;
List<Operand> sourcesList = new List<Operand>();
if (op.IsBindless)
{
sourcesList.Add(Ra());
}
SamplerType type = GetSamplerType(op.Dimensions);
int coordsCount = type.GetDimensions();
for (int index = 0; index < coordsCount; index++)
{
sourcesList.Add(Ra());
}
Operand packedParams = Ra();
if (op.IsArray)
{
sourcesList.Add(context.BitwiseAnd(packedParams, Const(0xffff)));
type |= SamplerType.Array;
}
// Derivatives (X and Y).
for (int dIndex = 0; dIndex < 2 * coordsCount; dIndex++)
{
sourcesList.Add(Rb());
}
if (op.HasOffset)
{
for (int index = 0; index < coordsCount; index++)
{
sourcesList.Add(context.BitfieldExtractS32(packedParams, Const(16 + index * 4), Const(4)));
}
flags |= TextureFlags.Offset;
}
Operand[] sources = sourcesList.ToArray();
int rdIndex = op.Rd.Index;
Operand GetDest()
{
if (rdIndex > RegisterConsts.RegisterZeroIndex)
{
return Const(0);
}
return Register(rdIndex++, RegisterType.Gpr);
}
int handle = !op.IsBindless ? op.Immediate : 0;
for (int compMask = op.ComponentMask, compIndex = 0; compMask != 0; compMask >>= 1, compIndex++)
{
if ((compMask & 1) != 0)
{
Operand dest = GetDest();
TextureOperation operation = new TextureOperation(
Instruction.TextureSample,
type,
flags,
handle,
compIndex,
dest,
sources);
context.Add(operation);
}
}
}
public static void Txq(EmitterContext context)
{
Txq(context, bindless: false);
EmitTextureQuery(context, bindless: false);
}
public static void TxqB(EmitterContext context)
{
Txq(context, bindless: true);
EmitTextureQuery(context, bindless: true);
}
private static void Txq(EmitterContext context, bool bindless)
private static void EmitTextureQuery(EmitterContext context, bool bindless)
{
OpCodeTex op = (OpCodeTex)context.CurrOp;
@ -597,7 +708,7 @@ namespace Ryujinx.Graphics.Shader.Instructions
}
}
private static void Tex(EmitterContext context, TextureFlags flags)
private static void EmitTextureSample(EmitterContext context, TextureFlags flags)
{
OpCodeTexture op = (OpCodeTexture)context.CurrOp;

10
Ryujinx.Graphics.Shader/IntermediateRepresentation/Instruction.cs
View file

@ -7,6 +7,7 @@ namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
{
Absolute = 1,
Add,
BitCount,
BitfieldExtractS32,
BitfieldExtractU32,
BitfieldInsert,
@ -38,11 +39,15 @@ namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
ConvertU32ToFP,
Copy,
Cosine,
Ddx,
Ddy,
Discard,
Divide,
EmitVertex,
EndPrimitive,
ExponentB2,
FindFirstSetS32,
FindFirstSetU32,
Floor,
FusedMultiplyAdd,
ImageLoad,
@ -75,12 +80,17 @@ namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
ShiftLeft,
ShiftRightS32,
ShiftRightU32,
Shuffle,
ShuffleDown,
ShuffleUp,
ShuffleXor,
Sine,
SquareRoot,
StoreGlobal,
StoreLocal,
StoreStorage,
Subtract,
SwizzleAdd,
TextureSample,
TextureSize,
Truncate,

7
Ryujinx.Graphics.Shader/IntermediateRepresentation/Operation.cs
View file

@ -80,7 +80,12 @@ namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
public void TurnIntoCopy(Operand source)
{
Inst = Instruction.Copy;
TurnInto(Instruction.Copy, source);
}
public void TurnInto(Instruction newInst, Operand source)
{
Inst = newInst;
foreach (Operand oldSrc in _sources)
{

11
Ryujinx.Graphics.Shader/IntermediateRepresentation/TextureFlags.cs
View file

@ -8,10 +8,11 @@ namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
None = 0,
Bindless = 1 << 0,
Gather = 1 << 1,
IntCoords = 1 << 2,
LodBias = 1 << 3,
LodLevel = 1 << 4,
Offset = 1 << 5,
Offsets = 1 << 6
Derivatives = 1 << 2,
IntCoords = 1 << 3,
LodBias = 1 << 4,
LodLevel = 1 << 5,
Offset = 1 << 6,
Offsets = 1 << 7
}
}

12
Ryujinx.Graphics.Shader/Ryujinx.Graphics.Shader.csproj
View file

@ -1,5 +1,17 @@
<Project Sdk="Microsoft.NET.Sdk">
<ItemGroup>
<EmbeddedResource Include="CodeGen\Glsl\HelperFunctions\Shuffle.glsl" />
<EmbeddedResource Include="CodeGen\Glsl\HelperFunctions\ShuffleDown.glsl" />
<EmbeddedResource Include="CodeGen\Glsl\HelperFunctions\ShuffleUp.glsl" />
<EmbeddedResource Include="CodeGen\Glsl\HelperFunctions\ShuffleXor.glsl" />
<EmbeddedResource Include="CodeGen\Glsl\HelperFunctions\SwizzleAdd.glsl" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\Ryujinx.Common\Ryujinx.Common.csproj" />
</ItemGroup>
<PropertyGroup>
<TargetFramework>netcoreapp3.0</TargetFramework>
</PropertyGroup>

14
Ryujinx.Graphics.Shader/StructuredIr/HelperFunctionsMask.cs Normal file
View file

@ -0,0 +1,14 @@
using System;
namespace Ryujinx.Graphics.Shader.StructuredIr
{
[Flags]
enum HelperFunctionsMask
{
Shuffle = 1 << 0,
ShuffleDown = 1 << 1,
ShuffleUp = 1 << 2,
ShuffleXor = 1 << 3,
SwizzleAdd = 1 << 4
}
}

10
Ryujinx.Graphics.Shader/StructuredIr/InstructionInfo.cs
View file

@ -27,6 +27,7 @@ namespace Ryujinx.Graphics.Shader.StructuredIr
// Inst Destination type Source 1 type Source 2 type Source 3 type Source 4 type
Add(Instruction.Absolute, VariableType.Scalar, VariableType.Scalar);
Add(Instruction.Add, VariableType.Scalar, VariableType.Scalar, VariableType.Scalar);
Add(Instruction.BitCount, VariableType.Int, VariableType.Int);
Add(Instruction.BitfieldExtractS32, VariableType.S32, VariableType.S32, VariableType.S32, VariableType.S32);
Add(Instruction.BitfieldExtractU32, VariableType.U32, VariableType.U32, VariableType.S32, VariableType.S32);
Add(Instruction.BitfieldInsert, VariableType.Int, VariableType.Int, VariableType.Int, VariableType.S32, VariableType.S32);
@ -55,8 +56,12 @@ namespace Ryujinx.Graphics.Shader.StructuredIr
Add(Instruction.ConvertS32ToFP, VariableType.F32, VariableType.S32);
Add(Instruction.ConvertU32ToFP, VariableType.F32, VariableType.U32);
Add(Instruction.Cosine, VariableType.Scalar, VariableType.Scalar);
Add(Instruction.Ddx, VariableType.F32, VariableType.F32);
Add(Instruction.Ddy, VariableType.F32, VariableType.F32);
Add(Instruction.Divide, VariableType.Scalar, VariableType.Scalar, VariableType.Scalar);
Add(Instruction.ExponentB2, VariableType.Scalar, VariableType.Scalar);
Add(Instruction.FindFirstSetS32, VariableType.S32, VariableType.S32);
Add(Instruction.FindFirstSetU32, VariableType.S32, VariableType.U32);
Add(Instruction.Floor, VariableType.F32, VariableType.F32);
Add(Instruction.FusedMultiplyAdd, VariableType.F32, VariableType.F32, VariableType.F32, VariableType.F32);
Add(Instruction.ImageLoad, VariableType.F32);
@ -75,6 +80,10 @@ namespace Ryujinx.Graphics.Shader.StructuredIr
Add(Instruction.ShiftLeft, VariableType.Int, VariableType.Int, VariableType.Int);
Add(Instruction.ShiftRightS32, VariableType.S32, VariableType.S32, VariableType.Int);
Add(Instruction.ShiftRightU32, VariableType.U32, VariableType.U32, VariableType.Int);
Add(Instruction.Shuffle, VariableType.F32, VariableType.F32, VariableType.U32, VariableType.U32);
Add(Instruction.ShuffleDown, VariableType.F32, VariableType.F32, VariableType.U32, VariableType.U32);
Add(Instruction.ShuffleUp, VariableType.F32, VariableType.F32, VariableType.U32, VariableType.U32);
Add(Instruction.ShuffleXor, VariableType.F32, VariableType.F32, VariableType.U32, VariableType.U32);
Add(Instruction.Maximum, VariableType.Scalar, VariableType.Scalar, VariableType.Scalar);
Add(Instruction.MaximumU32, VariableType.U32, VariableType.U32, VariableType.U32);
Add(Instruction.Minimum, VariableType.Scalar, VariableType.Scalar, VariableType.Scalar);
@ -90,6 +99,7 @@ namespace Ryujinx.Graphics.Shader.StructuredIr
Add(Instruction.StoreLocal, VariableType.None, VariableType.S32, VariableType.F32);
Add(Instruction.StoreStorage, VariableType.None, VariableType.S32, VariableType.S32, VariableType.F32);
Add(Instruction.Subtract, VariableType.Scalar, VariableType.Scalar, VariableType.Scalar);
Add(Instruction.SwizzleAdd, VariableType.F32, VariableType.F32, VariableType.F32, VariableType.S32);
Add(Instruction.TextureSample, VariableType.F32);
Add(Instruction.TextureSize, VariableType.S32, VariableType.S32, VariableType.S32);
Add(Instruction.Truncate, VariableType.F32, VariableType.F32);

22
Ryujinx.Graphics.Shader/StructuredIr/StructuredProgram.cs
View file

@ -179,6 +179,28 @@ namespace Ryujinx.Graphics.Shader.StructuredIr
context.AddNode(new AstOperation(inst, sources));
}
// Those instructions needs to be emulated by using helper functions,
// because they are NVIDIA specific. Those flags helps the backend to
// decide which helper functions are needed on the final generated code.
switch (operation.Inst)
{
case Instruction.Shuffle:
context.Info.HelperFunctionsMask |= HelperFunctionsMask.Shuffle;
break;
case Instruction.ShuffleDown:
context.Info.HelperFunctionsMask |= HelperFunctionsMask.ShuffleDown;
break;
case Instruction.ShuffleUp:
context.Info.HelperFunctionsMask |= HelperFunctionsMask.ShuffleUp;
break;
case Instruction.ShuffleXor:
context.Info.HelperFunctionsMask |= HelperFunctionsMask.ShuffleXor;
break;
case Instruction.SwizzleAdd:
context.Info.HelperFunctionsMask |= HelperFunctionsMask.SwizzleAdd;
break;
}
}
private static VariableType GetVarTypeFromUses(Operand dest)

2
Ryujinx.Graphics.Shader/StructuredIr/StructuredProgramInfo.cs
View file

@ -18,6 +18,8 @@ namespace Ryujinx.Graphics.Shader.StructuredIr
public bool UsesInstanceId { get; set; }
public HelperFunctionsMask HelperFunctionsMask { get; set; }
public HashSet<AstTextureOperation> Samplers { get; }
public HashSet<AstTextureOperation> Images { get; }

40
Ryujinx.Graphics.Shader/Translation/EmitterContextInsts.cs
View file

@ -6,6 +6,11 @@ namespace Ryujinx.Graphics.Shader.Translation
{
static class EmitterContextInsts
{
public static Operand BitCount(this EmitterContext context, Operand a)
{
return context.Add(Instruction.BitCount, Local(), a);
}
public static Operand BitfieldExtractS32(this EmitterContext context, Operand a, Operand b, Operand c)
{
return context.Add(Instruction.BitfieldExtractS32, Local(), a, b, c);
@ -106,6 +111,16 @@ namespace Ryujinx.Graphics.Shader.Translation
return context.Add(Instruction.EndPrimitive);
}
public static Operand FindFirstSetS32(this EmitterContext context, Operand a)
{
return context.Add(Instruction.FindFirstSetS32, Local(), a);
}
public static Operand FindFirstSetU32(this EmitterContext context, Operand a)
{
return context.Add(Instruction.FindFirstSetU32, Local(), a);
}
public static Operand FPAbsNeg(this EmitterContext context, Operand a, bool abs, bool neg)
{
return context.FPNegate(context.FPAbsolute(a, abs), neg);
@ -256,6 +271,11 @@ namespace Ryujinx.Graphics.Shader.Translation
return context.Add(Instruction.Truncate, Local(), a);
}
public static Operand FPSwizzleAdd(this EmitterContext context, Operand a, Operand b, int mask)
{
return context.Add(Instruction.SwizzleAdd, Local(), a, b, Const(mask));
}
public static Operand IAbsNeg(this EmitterContext context, Operand a, bool abs, bool neg)
{
return context.INegate(context.IAbsolute(a, abs), neg);
@ -418,6 +438,26 @@ namespace Ryujinx.Graphics.Shader.Translation
return context.Add(Instruction.ShiftRightU32, Local(), a, b);
}
public static Operand Shuffle(this EmitterContext context, Operand a, Operand b, Operand c)
{
return context.Add(Instruction.Shuffle, Local(), a, b, c);
}
public static Operand ShuffleDown(this EmitterContext context, Operand a, Operand b, Operand c)
{
return context.Add(Instruction.ShuffleDown, Local(), a, b, c);
}
public static Operand ShuffleUp(this EmitterContext context, Operand a, Operand b, Operand c)
{
return context.Add(Instruction.ShuffleUp, Local(), a, b, c);
}
public static Operand ShuffleXor(this EmitterContext context, Operand a, Operand b, Operand c)
{
return context.Add(Instruction.ShuffleXor, Local(), a, b, c);
}
public static Operand StoreGlobal(this EmitterContext context, Operand a, Operand b)
{
return context.Add(Instruction.StoreGlobal, null, a, b);

19
Ryujinx.Graphics.Shader/Translation/Optimizations/ConstantFolding.cs
View file

@ -21,6 +21,10 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
EvaluateBinary(operation, (x, y) => x + y);
break;
case Instruction.BitCount:
EvaluateUnary(operation, (x) => BitCount(x));
break;
case Instruction.BitwiseAnd:
EvaluateBinary(operation, (x, y) => x & y);
break;
@ -208,6 +212,21 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
return true;
}
private static int BitCount(int value)
{
int count = 0;
for (int bit = 0; bit < 32; bit++)
{
if (value.Extract(bit))
{
count++;
}
}
return count;
}
private static void BitfieldExtractS32(Operation operation)
{
int value = GetBitfieldExtractValue(operation);

82
Ryujinx.Graphics.Shader/Translation/Optimizations/Optimizer.cs
View file

@ -1,5 +1,6 @@
using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
namespace Ryujinx.Graphics.Shader.Translation.Optimizations
@ -59,7 +60,8 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
modified = true;
}
else if (operation.Inst == Instruction.PackHalf2x16 && PropagatePack(operation))
else if ((operation.Inst == Instruction.PackHalf2x16 && PropagatePack(operation)) ||
(operation.Inst == Instruction.ShuffleXor && MatchDdxOrDdy(operation)))
{
if (operation.Dest.UseOps.Count == 0)
{
@ -135,6 +137,84 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
return modified;
}
public static bool MatchDdxOrDdy(Operation operation)
{
// It's assumed that "operation.Inst" is ShuffleXor,
// that should be checked before calling this method.
Debug.Assert(operation.Inst == Instruction.ShuffleXor);
bool modified = false;
Operand src2 = operation.GetSource(1);
Operand src3 = operation.GetSource(2);
if (src2.Type != OperandType.Constant || (src2.Value != 1 && src2.Value != 2))
{
return false;
}
if (src3.Type != OperandType.Constant || src3.Value != 0x1c03)
{
return false;
}
bool isDdy = src2.Value == 2;
bool isDdx = !isDdy;
// We can replace any use by a FSWZADD with DDX/DDY, when
// the following conditions are true:
// - The mask should be 0b10100101 for DDY, or 0b10011001 for DDX.
// - The first source operand must be the shuffle output.
// - The second source operand must be the shuffle first source operand.
INode[] uses = operation.Dest.UseOps.ToArray();
foreach (INode use in uses)
{
if (!(use is Operation test))
{
continue;
}
if (!(use is Operation useOp) || useOp.Inst != Instruction.SwizzleAdd)
{
continue;
}
Operand fswzaddSrc1 = useOp.GetSource(0);
Operand fswzaddSrc2 = useOp.GetSource(1);
Operand fswzaddSrc3 = useOp.GetSource(2);
if (fswzaddSrc1 != operation.Dest)
{
continue;
}
if (fswzaddSrc2 != operation.GetSource(0))
{
continue;
}
if (fswzaddSrc3.Type != OperandType.Constant)
{
continue;
}
int mask = fswzaddSrc3.Value;
if ((isDdx && mask != 0b10011001) ||
(isDdy && mask != 0b10100101))
{
continue;
}
useOp.TurnInto(isDdx ? Instruction.Ddx : Instruction.Ddy, fswzaddSrc2);
modified = true;
}
return modified;
}
private static void RemoveNode(BasicBlock block, LinkedListNode<INode> llNode)
{
// Remove a node from the nodes list, and also remove itself