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gdk 2019-10-13 03:02:07 -03:00 • committed by Thog
parent f617fb542a
commit 1876b346fe
518 changed files with 15170 additions and 12486 deletions
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92
Ryujinx.Graphics.Shader/CodeGen/Glsl/CodeGenContext.cs Normal file
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using System.Collections.Generic;
using System.Text;
namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
{
class CodeGenContext
{
private const string Tab = " ";
public ShaderConfig Config { get; }
public List<BufferDescriptor> CBufferDescriptors { get; }
public List<BufferDescriptor> SBufferDescriptors { get; }
public List<TextureDescriptor> TextureDescriptors { get; }
public OperandManager OperandManager { get; }
private StringBuilder _sb;
private int _level;
private string _indentation;
public CodeGenContext(ShaderConfig config)
{
Config = config;
CBufferDescriptors = new List<BufferDescriptor>();
SBufferDescriptors = new List<BufferDescriptor>();
TextureDescriptors = new List<TextureDescriptor>();
OperandManager = new OperandManager();
_sb = new StringBuilder();
}
public void AppendLine()
{
_sb.AppendLine();
}
public void AppendLine(string str)
{
_sb.AppendLine(_indentation + str);
}
public string GetCode()
{
return _sb.ToString();
}
public void EnterScope()
{
AppendLine("{");
_level++;
UpdateIndentation();
}
public void LeaveScope(string suffix = "")
{
if (_level == 0)
{
return;
}
_level--;
UpdateIndentation();
AppendLine("}" + suffix);
}
private void UpdateIndentation()
{
_indentation = GetIndentation(_level);
}
private static string GetIndentation(int level)
{
string indentation = string.Empty;
for (int index = 0; index < level; index++)
{
indentation += Tab;
}
return indentation;
}
}
}

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Ryujinx.Graphics.Shader/CodeGen/Glsl/Declarations.cs Normal file
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using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.StructuredIr;
using Ryujinx.Graphics.Shader.Translation;
using System;
using System.Collections.Generic;
using System.Linq;
namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
{
static class Declarations
{
// At least 16 attributes are guaranteed by the spec.
public const int MaxAttributes = 16;
public static void Declare(CodeGenContext context, StructuredProgramInfo info)
{
context.AppendLine("#version 420 core");
context.AppendLine("#extension GL_ARB_shader_storage_buffer_object : enable");
if (context.Config.Stage == ShaderStage.Compute)
{
context.AppendLine("#extension GL_ARB_compute_shader : enable");
}
context.AppendLine();
context.AppendLine($"const int {DefaultNames.UndefinedName} = 0;");
context.AppendLine();
if (context.Config.Stage == ShaderStage.Geometry)
{
string inPrimitive = "points";
if ((context.Config.Flags & TranslationFlags.Unspecialized) != 0)
{
inPrimitive = DefineNames.InputTopologyName;
}
context.AppendLine($"layout ({inPrimitive}) in;");
string outPrimitive = "triangle_strip";
switch (context.Config.OutputTopology)
{
case OutputTopology.LineStrip: outPrimitive = "line_strip"; break;
case OutputTopology.PointList: outPrimitive = "points"; break;
case OutputTopology.TriangleStrip: outPrimitive = "triangle_strip"; break;
}
int maxOutputVertices = context.Config.MaxOutputVertices;
context.AppendLine($"layout ({outPrimitive}, max_vertices = {maxOutputVertices}) out;");
context.AppendLine();
}
context.AppendLine("layout (std140) uniform Extra");
context.EnterScope();
context.AppendLine("vec2 flip;");
context.AppendLine("int instance;");
context.LeaveScope(";");
context.AppendLine();
context.AppendLine($"precise float {DefaultNames.LocalMemoryName}[0x100];");
context.AppendLine();
if (info.CBuffers.Count != 0)
{
DeclareUniforms(context, info);
context.AppendLine();
}
if (info.SBuffers.Count != 0)
{
DeclareStorage(context, info);
context.AppendLine();
}
if (info.Samplers.Count != 0)
{
DeclareSamplers(context, info);
context.AppendLine();
}
if (context.Config.Stage != ShaderStage.Compute)
{
if (info.IAttributes.Count != 0)
{
DeclareInputAttributes(context, info);
context.AppendLine();
}
if (info.OAttributes.Count != 0 || context.Config.Stage != ShaderStage.Fragment)
{
DeclareOutputAttributes(context, info);
context.AppendLine();
}
}
else
{
string localSizeX = "1";
string localSizeY = "1";
string localSizeZ = "1";
if ((context.Config.Flags & TranslationFlags.Unspecialized) != 0)
{
localSizeX = DefineNames.LocalSizeX;
localSizeY = DefineNames.LocalSizeY;
localSizeZ = DefineNames.LocalSizeZ;
}
context.AppendLine(
$"layout (" +
$"local_size_x = {localSizeX}, " +
$"local_size_y = {localSizeY}, " +
$"local_size_z = {localSizeZ}) in;");
context.AppendLine();
}
}
public static void DeclareLocals(CodeGenContext context, StructuredProgramInfo info)
{
foreach (AstOperand decl in info.Locals)
{
string name = context.OperandManager.DeclareLocal(decl);
context.AppendLine(GetVarTypeName(decl.VarType) + " " + name + ";");
}
}
private static string GetVarTypeName(VariableType type)
{
switch (type)
{
case VariableType.Bool: return "bool";
case VariableType.F32: return "precise float";
case VariableType.S32: return "int";
case VariableType.U32: return "uint";
}
throw new ArgumentException($"Invalid variable type \"{type}\".");
}
private static void DeclareUniforms(CodeGenContext context, StructuredProgramInfo info)
{
foreach (int cbufSlot in info.CBuffers.OrderBy(x => x))
{
string ubName = OperandManager.GetShaderStagePrefix(context.Config.Stage);
ubName += "_" + DefaultNames.UniformNamePrefix + cbufSlot;
context.CBufferDescriptors.Add(new BufferDescriptor(ubName, cbufSlot));
context.AppendLine("layout (std140) uniform " + ubName);
context.EnterScope();
string ubSize = "[" + NumberFormatter.FormatInt(context.Config.MaxCBufferSize / 16) + "]";
context.AppendLine("vec4 " + OperandManager.GetUbName(context.Config.Stage, cbufSlot) + ubSize + ";");
context.LeaveScope(";");
}
}
private static void DeclareStorage(CodeGenContext context, StructuredProgramInfo info)
{
foreach (int sbufSlot in info.SBuffers.OrderBy(x => x))
{
string sbName = OperandManager.GetShaderStagePrefix(context.Config.Stage);
sbName += "_" + DefaultNames.StorageNamePrefix + sbufSlot;
context.SBufferDescriptors.Add(new BufferDescriptor(sbName, sbufSlot));
context.AppendLine("layout (std430) buffer " + sbName);
context.EnterScope();
context.AppendLine("precise float " + OperandManager.GetSbName(context.Config.Stage, sbufSlot) + "[];");
context.LeaveScope(";");
}
}
private static void DeclareSamplers(CodeGenContext context, StructuredProgramInfo info)
{
Dictionary<string, AstTextureOperation> samplers = new Dictionary<string, AstTextureOperation>();
foreach (AstTextureOperation texOp in info.Samplers.OrderBy(x => x.Handle))
{
string samplerName = OperandManager.GetSamplerName(context.Config.Stage, texOp);
if (!samplers.TryAdd(samplerName, texOp))
{
continue;
}
string samplerTypeName = GetSamplerTypeName(texOp.Target);
context.AppendLine("uniform " + samplerTypeName + " " + samplerName + ";");
}
foreach (KeyValuePair<string, AstTextureOperation> kv in samplers)
{
string samplerName = kv.Key;
AstTextureOperation texOp = kv.Value;
TextureDescriptor desc;
if ((texOp.Flags & TextureFlags.Bindless) != 0)
{
AstOperand operand = texOp.GetSource(0) as AstOperand;
desc = new TextureDescriptor(samplerName, texOp.Target, operand.CbufSlot, operand.CbufOffset);
}
else
{
desc = new TextureDescriptor(samplerName, texOp.Target, texOp.Handle);
}
context.TextureDescriptors.Add(desc);
}
}
private static void DeclareInputAttributes(CodeGenContext context, StructuredProgramInfo info)
{
string suffix = context.Config.Stage == ShaderStage.Geometry ? "[]" : string.Empty;
foreach (int attr in info.IAttributes.OrderBy(x => x))
{
string iq = info.InterpolationQualifiers[attr].ToGlslQualifier();
if (iq != string.Empty)
{
iq += " ";
}
context.AppendLine($"layout (location = {attr}) {iq}in vec4 {DefaultNames.IAttributePrefix}{attr}{suffix};");
}
}
private static void DeclareOutputAttributes(CodeGenContext context, StructuredProgramInfo info)
{
if (context.Config.Stage == ShaderStage.Fragment)
{
DeclareUsedOutputAttributes(context, info);
}
else
{
DeclareAllOutputAttributes(context, info);
}
}
private static void DeclareUsedOutputAttributes(CodeGenContext context, StructuredProgramInfo info)
{
foreach (int attr in info.OAttributes.OrderBy(x => x))
{
context.AppendLine($"layout (location = {attr}) out vec4 {DefaultNames.OAttributePrefix}{attr};");
}
}
private static void DeclareAllOutputAttributes(CodeGenContext context, StructuredProgramInfo info)
{
for (int attr = 0; attr < MaxAttributes; attr++)
{
string iq = $"{DefineNames.OutQualifierPrefixName}{attr} ";
context.AppendLine($"layout (location = {attr}) {iq}out vec4 {DefaultNames.OAttributePrefix}{attr};");
}
foreach (int attr in info.OAttributes.OrderBy(x => x).Where(x => x >= MaxAttributes))
{
context.AppendLine($"layout (location = {attr}) out vec4 {DefaultNames.OAttributePrefix}{attr};");
}
}
private static string GetSamplerTypeName(TextureTarget type)
{
string typeName;
switch (type & TextureTarget.Mask)
{
case TextureTarget.Texture1D: typeName = "sampler1D"; break;
case TextureTarget.Texture2D: typeName = "sampler2D"; break;
case TextureTarget.Texture3D: typeName = "sampler3D"; break;
case TextureTarget.TextureCube: typeName = "samplerCube"; break;
default: throw new ArgumentException($"Invalid sampler type \"{type}\".");
}
if ((type & TextureTarget.Multisample) != 0)
{
typeName += "MS";
}
if ((type & TextureTarget.Array) != 0)
{
typeName += "Array";
}
if ((type & TextureTarget.Shadow) != 0)
{
typeName += "Shadow";
}
return typeName;
}
}
}

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Ryujinx.Graphics.Shader/CodeGen/Glsl/DefaultNames.cs Normal file
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namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
{
static class DefaultNames
{
public const string LocalNamePrefix = "temp";
public const string SamplerNamePrefix = "tex";
public const string IAttributePrefix = "in_attr";
public const string OAttributePrefix = "out_attr";
public const string StorageNamePrefix = "s";
public const string StorageNameSuffix = "data";
public const string UniformNamePrefix = "c";
public const string UniformNameSuffix = "data";
public const string LocalMemoryName = "local_mem";
public const string UndefinedName = "undef";
}
}

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Ryujinx.Graphics.Shader/CodeGen/Glsl/GlslGenerator.cs Normal file
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using Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions;
using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.StructuredIr;
using System;
using static Ryujinx.Graphics.Shader.CodeGen.Glsl.TypeConversion;
namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
{
static class GlslGenerator
{
public static GlslProgram Generate(StructuredProgramInfo info, ShaderConfig config)
{
CodeGenContext context = new CodeGenContext(config);
Declarations.Declare(context, info);
PrintMainBlock(context, info);
return new GlslProgram(
context.CBufferDescriptors.ToArray(),
context.SBufferDescriptors.ToArray(),
context.TextureDescriptors.ToArray(),
context.GetCode());
}
private static void PrintMainBlock(CodeGenContext context, StructuredProgramInfo info)
{
context.AppendLine("void main()");
context.EnterScope();
Declarations.DeclareLocals(context, info);
// Ensure that unused attributes are set, otherwise the downstream
// compiler may eliminate them.
// (Not needed for fragment shader as it is the last stage).
if (context.Config.Stage != ShaderStage.Compute &&
context.Config.Stage != ShaderStage.Fragment)
{
for (int attr = 0; attr < Declarations.MaxAttributes; attr++)
{
if (info.OAttributes.Contains(attr))
{
continue;
}
context.AppendLine($"{DefaultNames.OAttributePrefix}{attr} = vec4(0);");
}
}
PrintBlock(context, info.MainBlock);
context.LeaveScope();
}
private static void PrintBlock(CodeGenContext context, AstBlock block)
{
AstBlockVisitor visitor = new AstBlockVisitor(block);
visitor.BlockEntered += (sender, e) =>
{
switch (e.Block.Type)
{
case AstBlockType.DoWhile:
context.AppendLine("do");
break;
case AstBlockType.Else:
context.AppendLine("else");
break;
case AstBlockType.ElseIf:
context.AppendLine($"else if ({GetCondExpr(context, e.Block.Condition)})");
break;
case AstBlockType.If:
context.AppendLine($"if ({GetCondExpr(context, e.Block.Condition)})");
break;
default: throw new InvalidOperationException($"Found unexpected block type \"{e.Block.Type}\".");
}
context.EnterScope();
};
visitor.BlockLeft += (sender, e) =>
{
context.LeaveScope();
if (e.Block.Type == AstBlockType.DoWhile)
{
context.AppendLine($"while ({GetCondExpr(context, e.Block.Condition)});");
}
};
foreach (IAstNode node in visitor.Visit())
{
if (node is AstOperation operation)
{
context.AppendLine(InstGen.GetExpression(context, operation) + ";");
}
else if (node is AstAssignment assignment)
{
VariableType srcType = OperandManager.GetNodeDestType(assignment.Source);
VariableType dstType = OperandManager.GetNodeDestType(assignment.Destination);
string dest;
if (assignment.Destination is AstOperand operand && operand.Type == OperandType.Attribute)
{
dest = OperandManager.GetOutAttributeName(operand, context.Config.Stage);
}
else
{
dest = InstGen.GetExpression(context, assignment.Destination);
}
string src = ReinterpretCast(context, assignment.Source, srcType, dstType);
context.AppendLine(dest + " = " + src + ";");
}
else if (node is AstComment comment)
{
context.AppendLine("// " + comment.Comment);
}
else
{
throw new InvalidOperationException($"Found unexpected node type \"{node?.GetType().Name ?? "null"}\".");
}
}
}
private static string GetCondExpr(CodeGenContext context, IAstNode cond)
{
VariableType srcType = OperandManager.GetNodeDestType(cond);
return ReinterpretCast(context, cond, srcType, VariableType.Bool);
}
}
}

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Ryujinx.Graphics.Shader/CodeGen/Glsl/GlslProgram.cs Normal file
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namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
{
class GlslProgram
{
public BufferDescriptor[] CBufferDescriptors { get; }
public BufferDescriptor[] SBufferDescriptors { get; }
public TextureDescriptor[] TextureDescriptors { get; }
public string Code { get; }
public GlslProgram(
BufferDescriptor[] cBufferDescriptors,
BufferDescriptor[] sBufferDescriptors,
TextureDescriptor[] textureDescriptors,
string code)
{
CBufferDescriptors = cBufferDescriptors;
SBufferDescriptors = sBufferDescriptors;
TextureDescriptors = textureDescriptors;
Code = code;
}
}
}

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Ryujinx.Graphics.Shader/CodeGen/Glsl/Instructions/InstGen.cs Normal file
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using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.StructuredIr;
using System;
using static Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions.InstGenHelper;
using static Ryujinx.Graphics.Shader.StructuredIr.InstructionInfo;
namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
{
static class InstGen
{
public static string GetExpression(CodeGenContext context, IAstNode node)
{
if (node is AstOperation operation)
{
return GetExpression(context, operation);
}
else if (node is AstOperand operand)
{
return context.OperandManager.GetExpression(operand, context.Config.Stage);
}
throw new ArgumentException($"Invalid node type \"{node?.GetType().Name ?? "null"}\".");
}
private static string GetExpression(CodeGenContext context, AstOperation operation)
{
Instruction inst = operation.Inst;
InstInfo info = GetInstructionInfo(inst);
if ((info.Type & InstType.Call) != 0)
{
int arity = (int)(info.Type & InstType.ArityMask);
string args = string.Empty;
for (int argIndex = 0; argIndex < arity; argIndex++)
{
if (argIndex != 0)
{
args += ", ";
}
VariableType dstType = GetSrcVarType(inst, argIndex);
args += GetSoureExpr(context, operation.GetSource(argIndex), dstType);
}
return info.OpName + "(" + args + ")";
}
else if ((info.Type & InstType.Op) != 0)
{
string op = info.OpName;
int arity = (int)(info.Type & InstType.ArityMask);
string[] expr = new string[arity];
for (int index = 0; index < arity; index++)
{
IAstNode src = operation.GetSource(index);
string srcExpr = GetSoureExpr(context, src, GetSrcVarType(inst, index));
bool isLhs = arity == 2 && index == 0;
expr[index] = Enclose(srcExpr, src, inst, info, isLhs);
}
switch (arity)
{
case 0:
return op;
case 1:
return op + expr[0];
case 2:
return $"{expr[0]} {op} {expr[1]}";
case 3:
return $"{expr[0]} {op[0]} {expr[1]} {op[1]} {expr[2]}";
}
}
else if ((info.Type & InstType.Special) != 0)
{
switch (inst)
{
case Instruction.LoadAttribute:
return InstGenMemory.LoadAttribute(context, operation);
case Instruction.LoadConstant:
return InstGenMemory.LoadConstant(context, operation);
case Instruction.LoadLocal:
return InstGenMemory.LoadLocal(context, operation);
case Instruction.LoadStorage:
return InstGenMemory.LoadStorage(context, operation);
case Instruction.PackHalf2x16:
return InstGenPacking.PackHalf2x16(context, operation);
case Instruction.StoreLocal:
return InstGenMemory.StoreLocal(context, operation);
case Instruction.StoreStorage:
return InstGenMemory.StoreStorage(context, operation);
case Instruction.TextureSample:
return InstGenMemory.TextureSample(context, operation);
case Instruction.TextureSize:
return InstGenMemory.TextureSize(context, operation);
case Instruction.UnpackHalf2x16:
return InstGenPacking.UnpackHalf2x16(context, operation);
}
}
return "0";
throw new InvalidOperationException($"Unexpected instruction type \"{info.Type}\".");
}
}
}

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Ryujinx.Graphics.Shader/CodeGen/Glsl/Instructions/InstGenHelper.cs Normal file
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using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.StructuredIr;
using static Ryujinx.Graphics.Shader.CodeGen.Glsl.TypeConversion;
namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
{
static class InstGenHelper
{
private static InstInfo[] _infoTbl;
static InstGenHelper()
{
_infoTbl = new InstInfo[(int)Instruction.Count];
Add(Instruction.Absolute, InstType.CallUnary, "abs");
Add(Instruction.Add, InstType.OpBinaryCom, "+", 2);
Add(Instruction.BitfieldExtractS32, InstType.CallTernary, "bitfieldExtract");
Add(Instruction.BitfieldExtractU32, InstType.CallTernary, "bitfieldExtract");
Add(Instruction.BitfieldInsert, InstType.CallQuaternary, "bitfieldInsert");
Add(Instruction.BitfieldReverse, InstType.CallUnary, "bitfieldReverse");
Add(Instruction.BitwiseAnd, InstType.OpBinaryCom, "&", 6);
Add(Instruction.BitwiseExclusiveOr, InstType.OpBinaryCom, "^", 7);
Add(Instruction.BitwiseNot, InstType.OpUnary, "~", 0);
Add(Instruction.BitwiseOr, InstType.OpBinaryCom, "|", 8);
Add(Instruction.Ceiling, InstType.CallUnary, "ceil");
Add(Instruction.Clamp, InstType.CallTernary, "clamp");
Add(Instruction.ClampU32, InstType.CallTernary, "clamp");
Add(Instruction.CompareEqual, InstType.OpBinaryCom, "==", 5);
Add(Instruction.CompareGreater, InstType.OpBinary, ">", 4);
Add(Instruction.CompareGreaterOrEqual, InstType.OpBinary, ">=", 4);
Add(Instruction.CompareGreaterOrEqualU32, InstType.OpBinary, ">=", 4);
Add(Instruction.CompareGreaterU32, InstType.OpBinary, ">", 4);
Add(Instruction.CompareLess, InstType.OpBinary, "<", 4);
Add(Instruction.CompareLessOrEqual, InstType.OpBinary, "<=", 4);
Add(Instruction.CompareLessOrEqualU32, InstType.OpBinary, "<=", 4);
Add(Instruction.CompareLessU32, InstType.OpBinary, "<", 4);
Add(Instruction.CompareNotEqual, InstType.OpBinaryCom, "!=", 5);
Add(Instruction.ConditionalSelect, InstType.OpTernary, "?:", 12);
Add(Instruction.ConvertFPToS32, InstType.CallUnary, "int");
Add(Instruction.ConvertS32ToFP, InstType.CallUnary, "float");
Add(Instruction.ConvertU32ToFP, InstType.CallUnary, "float");
Add(Instruction.Cosine, InstType.CallUnary, "cos");
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.Floor, InstType.CallUnary, "floor");
Add(Instruction.FusedMultiplyAdd, InstType.CallTernary, "fma");
Add(Instruction.IsNan, InstType.CallUnary, "isnan");
Add(Instruction.LoadAttribute, InstType.Special);
Add(Instruction.LoadConstant, InstType.Special);
Add(Instruction.LoadLocal, InstType.Special);
Add(Instruction.LoadStorage, InstType.Special);
Add(Instruction.LogarithmB2, InstType.CallUnary, "log2");
Add(Instruction.LogicalAnd, InstType.OpBinaryCom, "&&", 9);
Add(Instruction.LogicalExclusiveOr, InstType.OpBinaryCom, "^^", 10);
Add(Instruction.LogicalNot, InstType.OpUnary, "!", 0);
Add(Instruction.LogicalOr, InstType.OpBinaryCom, "||", 11);
Add(Instruction.LoopBreak, InstType.OpNullary, "break");
Add(Instruction.LoopContinue, InstType.OpNullary, "continue");
Add(Instruction.PackHalf2x16, InstType.Special);
Add(Instruction.ShiftLeft, InstType.OpBinary, "<<", 3);
Add(Instruction.ShiftRightS32, InstType.OpBinary, ">>", 3);
Add(Instruction.ShiftRightU32, InstType.OpBinary, ">>", 3);
Add(Instruction.Maximum, InstType.CallBinary, "max");
Add(Instruction.MaximumU32, InstType.CallBinary, "max");
Add(Instruction.Minimum, InstType.CallBinary, "min");
Add(Instruction.MinimumU32, InstType.CallBinary, "min");
Add(Instruction.Multiply, InstType.OpBinaryCom, "*", 1);
Add(Instruction.Negate, InstType.OpUnary, "-", 0);
Add(Instruction.ReciprocalSquareRoot, InstType.CallUnary, "inversesqrt");
Add(Instruction.Return, InstType.OpNullary, "return");
Add(Instruction.Sine, InstType.CallUnary, "sin");
Add(Instruction.SquareRoot, InstType.CallUnary, "sqrt");
Add(Instruction.StoreLocal, InstType.Special);
Add(Instruction.StoreStorage, InstType.Special);
Add(Instruction.Subtract, InstType.OpBinary, "-", 2);
Add(Instruction.TextureSample, InstType.Special);
Add(Instruction.TextureSize, InstType.Special);
Add(Instruction.Truncate, InstType.CallUnary, "trunc");
Add(Instruction.UnpackHalf2x16, InstType.Special);
}
private static void Add(Instruction inst, InstType flags, string opName = null, int precedence = 0)
{
_infoTbl[(int)inst] = new InstInfo(flags, opName, precedence);
}
public static InstInfo GetInstructionInfo(Instruction inst)
{
return _infoTbl[(int)(inst & Instruction.Mask)];
}
public static string GetSoureExpr(CodeGenContext context, IAstNode node, VariableType dstType)
{
return ReinterpretCast(context, node, OperandManager.GetNodeDestType(node), dstType);
}
public static string Enclose(string expr, IAstNode node, Instruction pInst, bool isLhs)
{
InstInfo pInfo = GetInstructionInfo(pInst);
return Enclose(expr, node, pInst, pInfo, isLhs);
}
public static string Enclose(string expr, IAstNode node, Instruction pInst, InstInfo pInfo, bool isLhs = false)
{
if (NeedsParenthesis(node, pInst, pInfo, isLhs))
{
expr = "(" + expr + ")";
}
return expr;
}
public static bool NeedsParenthesis(IAstNode node, Instruction pInst, InstInfo pInfo, bool isLhs)
{
// If the node isn't a operation, then it can only be a operand,
// and those never needs to be surrounded in parenthesis.
if (!(node is AstOperation operation))
{
// This is sort of a special case, if this is a negative constant,
// and it is consumed by a unary operation, we need to put on the parenthesis,
// as in GLSL a sequence like --2 or ~-1 is not valid.
if (IsNegativeConst(node) && pInfo.Type == InstType.OpUnary)
{
return true;
}
return false;
}
if ((pInfo.Type & (InstType.Call | InstType.Special)) != 0)
{
return false;
}
InstInfo info = _infoTbl[(int)(operation.Inst & Instruction.Mask)];
if ((info.Type & (InstType.Call | InstType.Special)) != 0)
{
return false;
}
if (info.Precedence < pInfo.Precedence)
{
return false;
}
if (info.Precedence == pInfo.Precedence && isLhs)
{
return false;
}
if (pInst == operation.Inst && info.Type == InstType.OpBinaryCom)
{
return false;
}
return true;
}
private static bool IsNegativeConst(IAstNode node)
{
if (!(node is AstOperand operand))
{
return false;
}
return operand.Type == OperandType.Constant && operand.Value < 0;
}
}
}

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using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.StructuredIr;
using System;
using static Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions.InstGenHelper;
using static Ryujinx.Graphics.Shader.StructuredIr.InstructionInfo;
namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
{
static class InstGenMemory
{
public static string LoadAttribute(CodeGenContext context, AstOperation operation)
{
IAstNode src1 = operation.GetSource(0);
IAstNode src2 = operation.GetSource(1);
if (!(src1 is AstOperand attr) || attr.Type != OperandType.Attribute)
{
throw new InvalidOperationException("First source of LoadAttribute must be a attribute.");
}
string indexExpr = GetSoureExpr(context, src2, GetSrcVarType(operation.Inst, 1));
return OperandManager.GetAttributeName(attr, context.Config.Stage, isOutAttr: false, indexExpr);
}
public static string LoadConstant(CodeGenContext context, AstOperation operation)
{
IAstNode src1 = operation.GetSource(0);
IAstNode src2 = operation.GetSource(1);
string offsetExpr = GetSoureExpr(context, src2, GetSrcVarType(operation.Inst, 1));
offsetExpr = Enclose(offsetExpr, src2, Instruction.ShiftRightS32, isLhs: true);
return OperandManager.GetConstantBufferName(src1, offsetExpr, context.Config.Stage);
}
public static string LoadLocal(CodeGenContext context, AstOperation operation)
{
IAstNode src1 = operation.GetSource(0);
string offsetExpr = GetSoureExpr(context, src1, GetSrcVarType(operation.Inst, 0));
return $"{DefaultNames.LocalMemoryName}[{offsetExpr}]";
}
public static string LoadStorage(CodeGenContext context, AstOperation operation)
{
IAstNode src1 = operation.GetSource(0);
IAstNode src2 = operation.GetSource(1);
string offsetExpr = GetSoureExpr(context, src2, GetSrcVarType(operation.Inst, 1));
return OperandManager.GetStorageBufferName(src1, offsetExpr, context.Config.Stage);
}
public static string StoreLocal(CodeGenContext context, AstOperation operation)
{
IAstNode src1 = operation.GetSource(0);
IAstNode src2 = operation.GetSource(1);
string offsetExpr = GetSoureExpr(context, src1, GetSrcVarType(operation.Inst, 0));
VariableType srcType = OperandManager.GetNodeDestType(src2);
string src = TypeConversion.ReinterpretCast(context, src2, srcType, VariableType.F32);
return $"{DefaultNames.LocalMemoryName}[{offsetExpr}] = {src}";
}
public static string StoreStorage(CodeGenContext context, AstOperation operation)
{
IAstNode src1 = operation.GetSource(0);
IAstNode src2 = operation.GetSource(1);
IAstNode src3 = operation.GetSource(2);
string offsetExpr = GetSoureExpr(context, src2, GetSrcVarType(operation.Inst, 1));
VariableType srcType = OperandManager.GetNodeDestType(src3);
string src = TypeConversion.ReinterpretCast(context, src3, srcType, VariableType.F32);
string sbName = OperandManager.GetStorageBufferName(src1, offsetExpr, context.Config.Stage);
return $"{sbName} = {src}";
}
public static string TextureSample(CodeGenContext context, AstOperation operation)
{
AstTextureOperation texOp = (AstTextureOperation)operation;
bool isBindless = (texOp.Flags & TextureFlags.Bindless) != 0;
bool isGather = (texOp.Flags & TextureFlags.Gather) != 0;
bool intCoords = (texOp.Flags & TextureFlags.IntCoords) != 0;
bool hasLodBias = (texOp.Flags & TextureFlags.LodBias) != 0;
bool hasLodLevel = (texOp.Flags & TextureFlags.LodLevel) != 0;
bool hasOffset = (texOp.Flags & TextureFlags.Offset) != 0;
bool hasOffsets = (texOp.Flags & TextureFlags.Offsets) != 0;
bool isArray = (texOp.Target & TextureTarget.Array) != 0;
bool isMultisample = (texOp.Target & TextureTarget.Multisample) != 0;
bool isShadow = (texOp.Target & TextureTarget.Shadow) != 0;
// This combination is valid, but not available on GLSL.
// For now, ignore the LOD level and do a normal sample.
// TODO: How to implement it properly?
if (hasLodLevel && isArray && isShadow)
{
hasLodLevel = false;
}
string texCall = intCoords ? "texelFetch" : "texture";
if (isGather)
{
texCall += "Gather";
}
else if (hasLodLevel && !intCoords)
{
texCall += "Lod";
}
if (hasOffset)
{
texCall += "Offset";
}
else if (hasOffsets)
{
texCall += "Offsets";
}
string samplerName = OperandManager.GetSamplerName(context.Config.Stage, texOp);
texCall += "(" + samplerName;
int coordsCount = texOp.Target.GetDimensions();
int pCount = coordsCount;
int arrayIndexElem = -1;
if (isArray)
{
arrayIndexElem = pCount++;
}
// The sampler 1D shadow overload expects a
// dummy value on the middle of the vector, who knows why...
bool hasDummy1DShadowElem = texOp.Target == (TextureTarget.Texture1D | TextureTarget.Shadow);
if (hasDummy1DShadowElem)
{
pCount++;
}
if (isShadow && !isGather)
{
pCount++;
}
// On textureGather*, the comparison value is
// always specified as an extra argument.
bool hasExtraCompareArg = isShadow && isGather;
if (pCount == 5)
{
pCount = 4;
hasExtraCompareArg = true;
}
int srcIndex = isBindless ? 1 : 0;
string Src(VariableType type)
{
return GetSoureExpr(context, texOp.GetSource(srcIndex++), type);
}
void Append(string str)
{
texCall += ", " + str;
}
VariableType coordType = intCoords ? VariableType.S32 : VariableType.F32;
string AssemblePVector(int count)
{
if (count > 1)
{
string[] elems = new string[count];
for (int index = 0; index < count; index++)
{
if (arrayIndexElem == index)
{
elems[index] = Src(VariableType.S32);
if (!intCoords)
{
elems[index] = "float(" + elems[index] + ")";
}
}
else if (index == 1 && hasDummy1DShadowElem)
{
elems[index] = NumberFormatter.FormatFloat(0);
}
else
{
elems[index] = Src(coordType);
}
}
string prefix = intCoords ? "i" : string.Empty;
return prefix + "vec" + count + "(" + string.Join(", ", elems) + ")";
}
else
{
return Src(coordType);
}
}
Append(AssemblePVector(pCount));
if (hasExtraCompareArg)
{
Append(Src(VariableType.F32));
}
if (isMultisample)
{
Append(Src(VariableType.S32));
}
else if (hasLodLevel)
{
Append(Src(coordType));
}
string AssembleOffsetVector(int count)
{
if (count > 1)
{
string[] elems = new string[count];
for (int index = 0; index < count; index++)
{
elems[index] = Src(VariableType.S32);
}
return "ivec" + count + "(" + string.Join(", ", elems) + ")";
}
else
{
return Src(VariableType.S32);
}
}
if (hasOffset)
{
Append(AssembleOffsetVector(coordsCount));
}
else if (hasOffsets)
{
texCall += $", ivec{coordsCount}[4](";
texCall += AssembleOffsetVector(coordsCount) + ", ";
texCall += AssembleOffsetVector(coordsCount) + ", ";
texCall += AssembleOffsetVector(coordsCount) + ", ";
texCall += AssembleOffsetVector(coordsCount) + ")";
}
if (hasLodBias)
{
Append(Src(VariableType.F32));
}
// textureGather* optional extra component index,
// not needed for shadow samplers.
if (isGather && !isShadow)
{
Append(Src(VariableType.S32));
}
texCall += ")" + (isGather || !isShadow ? GetMask(texOp.ComponentMask) : "");
return texCall;
}
public static string TextureSize(CodeGenContext context, AstOperation operation)
{
AstTextureOperation texOp = (AstTextureOperation)operation;
bool isBindless = (texOp.Flags & TextureFlags.Bindless) != 0;
string samplerName = OperandManager.GetSamplerName(context.Config.Stage, texOp);
IAstNode src0 = operation.GetSource(isBindless ? 1 : 0);
string src0Expr = GetSoureExpr(context, src0, GetSrcVarType(operation.Inst, 0));
return $"textureSize({samplerName}, {src0Expr}){GetMask(texOp.ComponentMask)}";
}
private static string GetMask(int compMask)
{
string mask = ".";
for (int index = 0; index < 4; index++)
{
if ((compMask & (1 << index)) != 0)
{
mask += "rgba".Substring(index, 1);
}
}
return mask;
}
}
}

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Ryujinx.Graphics.Shader/CodeGen/Glsl/Instructions/InstGenPacking.cs Normal file
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using Ryujinx.Graphics.Shader.StructuredIr;
using static Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions.InstGenHelper;
using static Ryujinx.Graphics.Shader.StructuredIr.InstructionInfo;
namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
{
static class InstGenPacking
{
public static string PackHalf2x16(CodeGenContext context, AstOperation operation)
{
IAstNode src0 = operation.GetSource(0);
IAstNode src1 = operation.GetSource(1);
string src0Expr = GetSoureExpr(context, src0, GetSrcVarType(operation.Inst, 0));
string src1Expr = GetSoureExpr(context, src1, GetSrcVarType(operation.Inst, 1));
return $"packHalf2x16(vec2({src0Expr}, {src1Expr}))";
}
public static string UnpackHalf2x16(CodeGenContext context, AstOperation operation)
{
IAstNode src = operation.GetSource(0);
string srcExpr = GetSoureExpr(context, src, GetSrcVarType(operation.Inst, 0));
return $"unpackHalf2x16({srcExpr}){GetMask(operation.ComponentMask)}";
}
private static string GetMask(int compMask)
{
string mask = ".";
for (int index = 0; index < 2; index++)
{
if ((compMask & (1 << index)) != 0)
{
mask += "xy".Substring(index, 1);
}
}
return mask;
}
}
}

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Ryujinx.Graphics.Shader/CodeGen/Glsl/Instructions/InstInfo.cs Normal file
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namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
{
struct InstInfo
{
public InstType Type { get; }
public string OpName { get; }
public int Precedence { get; }
public InstInfo(InstType type, string opName, int precedence)
{
Type = type;
OpName = opName;
Precedence = precedence;
}
}
}

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Ryujinx.Graphics.Shader/CodeGen/Glsl/Instructions/InstType.cs Normal file
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using System;
namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
{
[Flags]
enum InstType
{
OpNullary = Op | 0,
OpUnary = Op | 1,
OpBinary = Op | 2,
OpTernary = Op | 3,
OpBinaryCom = OpBinary | Commutative,
CallNullary = Call | 0,
CallUnary = Call | 1,
CallBinary = Call | 2,
CallTernary = Call | 3,
CallQuaternary = Call | 4,
Commutative = 1 << 8,
Op = 1 << 9,
Call = 1 << 10,
Special = 1 << 11,
ArityMask = 0xff
}
}

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using Ryujinx.Graphics.Shader.StructuredIr;
using System;
using System.Globalization;
namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
{
static class NumberFormatter
{
private const int MaxDecimal = 256;
public static bool TryFormat(int value, VariableType dstType, out string formatted)
{
if (dstType == VariableType.F32)
{
return TryFormatFloat(BitConverter.Int32BitsToSingle(value), out formatted);
}
else if (dstType == VariableType.S32)
{
formatted = FormatInt(value);
}
else if (dstType == VariableType.U32)
{
formatted = FormatUint((uint)value);
}
else if (dstType == VariableType.Bool)
{
formatted = value != 0 ? "true" : "false";
}
else
{
throw new ArgumentException($"Invalid variable type \"{dstType}\".");
}
return true;
}
public static string FormatFloat(float value)
{
if (!TryFormatFloat(value, out string formatted))
{
throw new ArgumentException("Failed to convert float value to string.");
}
return formatted;
}
public static bool TryFormatFloat(float value, out string formatted)
{
if (float.IsNaN(value) || float.IsInfinity(value))
{
formatted = null;
return false;
}
formatted = value.ToString("G9", CultureInfo.InvariantCulture);
if (!(formatted.Contains('.') ||
formatted.Contains('e') ||
formatted.Contains('E')))
{
formatted += ".0";
}
return true;
}
public static string FormatInt(int value, VariableType dstType)
{
if (dstType == VariableType.S32)
{
return FormatInt(value);
}
else if (dstType == VariableType.U32)
{
return FormatUint((uint)value);
}
else
{
throw new ArgumentException($"Invalid variable type \"{dstType}\".");
}
}
public static string FormatInt(int value)
{
if (value <= MaxDecimal && value >= -MaxDecimal)
{
return value.ToString(CultureInfo.InvariantCulture);
}
return "0x" + value.ToString("X", CultureInfo.InvariantCulture);
}
public static string FormatUint(uint value)
{
if (value <= MaxDecimal && value >= 0)
{
return value.ToString(CultureInfo.InvariantCulture) + "u";
}
return "0x" + value.ToString("X", CultureInfo.InvariantCulture) + "u";
}
}
}

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using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.StructuredIr;
using Ryujinx.Graphics.Shader.Translation;
using System;
using System.Collections.Generic;
using static Ryujinx.Graphics.Shader.StructuredIr.InstructionInfo;
namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
{
class OperandManager
{
private static string[] _stagePrefixes = new string[] { "cp", "vp", "tcp", "tep", "gp", "fp" };
private struct BuiltInAttribute
{
public string Name { get; }
public VariableType Type { get; }
public BuiltInAttribute(string name, VariableType type)
{
Name = name;
Type = type;
}
}
private static Dictionary<int, BuiltInAttribute> _builtInAttributes =
new Dictionary<int, BuiltInAttribute>()
{
{ AttributeConsts.Layer, new BuiltInAttribute("gl_Layer", VariableType.S32) },
{ AttributeConsts.PointSize, new BuiltInAttribute("gl_PointSize", VariableType.F32) },
{ AttributeConsts.PositionX, new BuiltInAttribute("gl_Position.x", VariableType.F32) },
{ AttributeConsts.PositionY, new BuiltInAttribute("gl_Position.y", VariableType.F32) },
{ AttributeConsts.PositionZ, new BuiltInAttribute("gl_Position.z", VariableType.F32) },
{ AttributeConsts.PositionW, new BuiltInAttribute("gl_Position.w", VariableType.F32) },
{ AttributeConsts.ClipDistance0, new BuiltInAttribute("gl_ClipDistance[0]", VariableType.F32) },
{ AttributeConsts.ClipDistance1, new BuiltInAttribute("gl_ClipDistance[1]", VariableType.F32) },
{ AttributeConsts.ClipDistance2, new BuiltInAttribute("gl_ClipDistance[2]", VariableType.F32) },
{ AttributeConsts.ClipDistance3, new BuiltInAttribute("gl_ClipDistance[3]", VariableType.F32) },
{ AttributeConsts.ClipDistance4, new BuiltInAttribute("gl_ClipDistance[4]", VariableType.F32) },
{ AttributeConsts.ClipDistance5, new BuiltInAttribute("gl_ClipDistance[5]", VariableType.F32) },
{ AttributeConsts.ClipDistance6, new BuiltInAttribute("gl_ClipDistance[6]", VariableType.F32) },
{ AttributeConsts.ClipDistance7, new BuiltInAttribute("gl_ClipDistance[7]", VariableType.F32) },
{ AttributeConsts.PointCoordX, new BuiltInAttribute("gl_PointCoord.x", VariableType.F32) },
{ AttributeConsts.PointCoordY, new BuiltInAttribute("gl_PointCoord.y", VariableType.F32) },
{ AttributeConsts.TessCoordX, new BuiltInAttribute("gl_TessCoord.x", VariableType.F32) },
{ AttributeConsts.TessCoordY, new BuiltInAttribute("gl_TessCoord.y", VariableType.F32) },
{ AttributeConsts.InstanceId, new BuiltInAttribute("gl_InstanceID", VariableType.S32) },
{ AttributeConsts.VertexId, new BuiltInAttribute("gl_VertexID", VariableType.S32) },
{ AttributeConsts.FrontFacing, new BuiltInAttribute("gl_FrontFacing", VariableType.Bool) },
// Special.
{ AttributeConsts.FragmentOutputDepth, new BuiltInAttribute("gl_FragDepth", VariableType.F32) },
{ AttributeConsts.ThreadIdX, new BuiltInAttribute("gl_LocalInvocationID.x", VariableType.U32) },
{ AttributeConsts.ThreadIdY, new BuiltInAttribute("gl_LocalInvocationID.y", VariableType.U32) },
{ AttributeConsts.ThreadIdZ, new BuiltInAttribute("gl_LocalInvocationID.z", VariableType.U32) },
{ AttributeConsts.CtaIdX, new BuiltInAttribute("gl_WorkGroupID.x", VariableType.U32) },
{ AttributeConsts.CtaIdY, new BuiltInAttribute("gl_WorkGroupID.y", VariableType.U32) },
{ AttributeConsts.CtaIdZ, new BuiltInAttribute("gl_WorkGroupID.z", VariableType.U32) },
};
private Dictionary<AstOperand, string> _locals;
public OperandManager()
{
_locals = new Dictionary<AstOperand, string>();
}
public string DeclareLocal(AstOperand operand)
{
string name = $"{DefaultNames.LocalNamePrefix}_{_locals.Count}";
_locals.Add(operand, name);
return name;
}
public string GetExpression(AstOperand operand, ShaderStage stage)
{
switch (operand.Type)
{
case OperandType.Attribute:
return GetAttributeName(operand, stage);
case OperandType.Constant:
return NumberFormatter.FormatInt(operand.Value);
case OperandType.ConstantBuffer:
return GetConstantBufferName(operand, stage);
case OperandType.LocalVariable:
return _locals[operand];
case OperandType.Undefined:
return DefaultNames.UndefinedName;
}
throw new ArgumentException($"Invalid operand type \"{operand.Type}\".");
}
public static string GetConstantBufferName(AstOperand cbuf, ShaderStage stage)
{
string ubName = GetUbName(stage, cbuf.CbufSlot);
ubName += "[" + (cbuf.CbufOffset >> 2) + "]";
return ubName + "." + GetSwizzleMask(cbuf.CbufOffset & 3);
}
public static string GetStorageBufferName(IAstNode slot, string offsetExpr, ShaderStage stage)
{
// Non-constant slots are not supported.
// It is expected that upstream stages are never going to generate non-constant
// slot access.
AstOperand operand = (AstOperand)slot;
string sbName = GetSbName(stage, operand.Value);
return $"{sbName}[{offsetExpr}]";
}
public static string GetConstantBufferName(IAstNode slot, string offsetExpr, ShaderStage stage)
{
// Non-constant slots are not supported.
// It is expected that upstream stages are never going to generate non-constant
// slot access.
AstOperand operand = (AstOperand)slot;
string ubName = GetUbName(stage, operand.Value);
string index0 = "[" + offsetExpr + " >> 2]";
string index1 = "[" + offsetExpr + " & 3]";
return ubName + index0 + index1;
}
public static string GetOutAttributeName(AstOperand attr, ShaderStage stage)
{
return GetAttributeName(attr, stage, isOutAttr: true);
}
public static string GetAttributeName(AstOperand attr, ShaderStage stage, bool isOutAttr = false, string indexExpr = "0")
{
int value = attr.Value;
string swzMask = GetSwizzleMask((value >> 2) & 3);
if (value >= AttributeConsts.UserAttributeBase &&
value < AttributeConsts.UserAttributeEnd)
{
value -= AttributeConsts.UserAttributeBase;
string prefix = isOutAttr
? DefaultNames.OAttributePrefix
: DefaultNames.IAttributePrefix;
string name = $"{prefix}{(value >> 4)}";
if (stage == ShaderStage.Geometry && !isOutAttr)
{
name += $"[{indexExpr}]";
}
name += "." + swzMask;
return name;
}
else
{
if (value >= AttributeConsts.FragmentOutputColorBase &&
value < AttributeConsts.FragmentOutputColorEnd)
{
value -= AttributeConsts.FragmentOutputColorBase;
return $"{DefaultNames.OAttributePrefix}{(value >> 4)}.{swzMask}";
}
else if (_builtInAttributes.TryGetValue(value & ~3, out BuiltInAttribute builtInAttr))
{
// TODO: There must be a better way to handle this...
if (stage == ShaderStage.Fragment)
{
switch (value & ~3)
{
case AttributeConsts.PositionX: return "gl_FragCoord.x";
case AttributeConsts.PositionY: return "gl_FragCoord.y";
case AttributeConsts.PositionZ: return "gl_FragCoord.z";
case AttributeConsts.PositionW: return "1.0";
}
}
string name = builtInAttr.Name;
if (stage == ShaderStage.Geometry && !isOutAttr)
{
name = $"gl_in[{indexExpr}].{name}";
}
return name;
}
}
// TODO: Warn about unknown built-in attribute.
return isOutAttr ? "// bad_attr0x" + value.ToString("X") : "0.0";
}
public static string GetSbName(ShaderStage stage, int slot)
{
string sbName = GetShaderStagePrefix(stage);
sbName += "_" + DefaultNames.StorageNamePrefix + slot;
return sbName + "_" + DefaultNames.StorageNameSuffix;
}
public static string GetUbName(ShaderStage stage, int slot)
{
string ubName = GetShaderStagePrefix(stage);
ubName += "_" + DefaultNames.UniformNamePrefix + slot;
return ubName + "_" + DefaultNames.UniformNameSuffix;
}
public static string GetSamplerName(ShaderStage stage, AstTextureOperation texOp)
{
string suffix;
if ((texOp.Flags & TextureFlags.Bindless) != 0)
{
AstOperand operand = texOp.GetSource(0) as AstOperand;
suffix = "_cb" + operand.CbufSlot + "_" + operand.CbufOffset;
}
else
{
suffix = (texOp.Handle - 8).ToString();
}
return GetShaderStagePrefix(stage) + "_" + DefaultNames.SamplerNamePrefix + suffix;
}
public static string GetShaderStagePrefix(ShaderStage stage)
{
int index = (int)stage;
if ((uint)index >= _stagePrefixes.Length)
{
return "invalid";
}
return _stagePrefixes[index];
}
private static string GetSwizzleMask(int value)
{
return "xyzw".Substring(value, 1);
}
public static VariableType GetNodeDestType(IAstNode node)
{
if (node is AstOperation operation)
{
// Load attribute basically just returns the attribute value.
// Some built-in attributes may have different types, so we need
// to return the type based on the attribute that is being read.
if (operation.Inst == Instruction.LoadAttribute)
{
return GetOperandVarType((AstOperand)operation.GetSource(0));
}
return GetDestVarType(operation.Inst);
}
else if (node is AstOperand operand)
{
return GetOperandVarType(operand);
}
else
{
throw new ArgumentException($"Invalid node type \"{node?.GetType().Name ?? "null"}\".");
}
}
private static VariableType GetOperandVarType(AstOperand operand)
{
if (operand.Type == OperandType.Attribute)
{
if (_builtInAttributes.TryGetValue(operand.Value & ~3, out BuiltInAttribute builtInAttr))
{
return builtInAttr.Type;
}
}
return OperandInfo.GetVarType(operand);
}
}
}

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Ryujinx.Graphics.Shader/CodeGen/Glsl/TypeConversion.cs Normal file
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using Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions;
using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.StructuredIr;
using System;
namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
{
static class TypeConversion
{
public static string ReinterpretCast(
CodeGenContext context,
IAstNode node,
VariableType srcType,
VariableType dstType)
{
if (node is AstOperand operand && operand.Type == OperandType.Constant)
{
if (NumberFormatter.TryFormat(operand.Value, dstType, out string formatted))
{
return formatted;
}
}
string expr = InstGen.GetExpression(context, node);
return ReinterpretCast(expr, node, srcType, dstType);
}
private static string ReinterpretCast(string expr, IAstNode node, VariableType srcType, VariableType dstType)
{
if (srcType == dstType)
{
return expr;
}
if (srcType == VariableType.F32)
{
switch (dstType)
{
case VariableType.S32: return $"floatBitsToInt({expr})";
case VariableType.U32: return $"floatBitsToUint({expr})";
}
}
else if (dstType == VariableType.F32)
{
switch (srcType)
{
case VariableType.Bool: return $"intBitsToFloat({ReinterpretBoolToInt(expr, node, VariableType.S32)})";
case VariableType.S32: return $"intBitsToFloat({expr})";
case VariableType.U32: return $"uintBitsToFloat({expr})";
}
}
else if (srcType == VariableType.Bool)
{
return ReinterpretBoolToInt(expr, node, dstType);
}
else if (dstType == VariableType.Bool)
{
expr = InstGenHelper.Enclose(expr, node, Instruction.CompareNotEqual, isLhs: true);
return $"({expr} != 0)";
}
else if (dstType == VariableType.S32)
{
return $"int({expr})";
}
else if (dstType == VariableType.U32)
{
return $"uint({expr})";
}
throw new ArgumentException($"Invalid reinterpret cast from \"{srcType}\" to \"{dstType}\".");
}
private static string ReinterpretBoolToInt(string expr, IAstNode node, VariableType dstType)
{
string trueExpr = NumberFormatter.FormatInt(IrConsts.True, dstType);
string falseExpr = NumberFormatter.FormatInt(IrConsts.False, dstType);
expr = InstGenHelper.Enclose(expr, node, Instruction.ConditionalSelect, isLhs: false);
return $"({expr} ? {trueExpr} : {falseExpr})";
}
}
}