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using Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions;
using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.StructuredIr;
using Ryujinx.Graphics.Shader.Translation;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using static Ryujinx.Graphics.Shader.StructuredIr.InstructionInfo;
namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
{
class OperandManager
{
private static readonly string[] _stagePrefixes = new string[] { "cp", "vp", "tcp", "tep", "gp", "fp" };
private Dictionary<AstOperand, string> _locals;
public OperandManager()
{
_locals = new Dictionary<AstOperand, string>();
}
public string DeclareLocal(AstOperand operand)
{
string name = $"{DefaultNames.LocalNamePrefix}_{_locals.Count}";
_locals.Add(operand, name);
return name;
}
public string GetExpression(CodeGenContext context, AstOperand operand)
{
return operand.Type switch
{
OperandType.Argument => GetArgumentName(operand.Value),
OperandType.Constant => NumberFormatter.FormatInt(operand.Value),
OperandType.LocalVariable => _locals[operand],
OperandType.Undefined => DefaultNames.UndefinedName,
_ => throw new ArgumentException($"Invalid operand type \"{operand.Type}\".")
};
}
public static string GetSamplerName(ShaderStage stage, AstTextureOperation texOp, string indexExpr)
{
return GetSamplerName(stage, texOp.CbufSlot, texOp.Handle, texOp.Type.HasFlag(SamplerType.Indexed), indexExpr);
}
public static string GetSamplerName(ShaderStage stage, int cbufSlot, int handle, bool indexed, string indexExpr)
{
string suffix = cbufSlot < 0 ? $"_tcb_{handle:X}" : $"_cb{cbufSlot}_{handle:X}";
if (indexed)
{
suffix += $"a[{indexExpr}]";
}
return GetShaderStagePrefix(stage) + "_" + DefaultNames.SamplerNamePrefix + suffix;
}
public static string GetImageName(ShaderStage stage, AstTextureOperation texOp, string indexExpr)
{
return GetImageName(stage, texOp.CbufSlot, texOp.Handle, texOp.Format, texOp.Type.HasFlag(SamplerType.Indexed), indexExpr);
}
public static string GetImageName(
ShaderStage stage,
int cbufSlot,
int handle,
TextureFormat format,
bool indexed,
string indexExpr)
{
string suffix = cbufSlot < 0
? $"_tcb_{handle:X}_{format.ToGlslFormat()}"
: $"_cb{cbufSlot}_{handle:X}_{format.ToGlslFormat()}";
if (indexed)
{
suffix += $"a[{indexExpr}]";
}
return GetShaderStagePrefix(stage) + "_" + DefaultNames.ImageNamePrefix + suffix;
}
public static string GetShaderStagePrefix(ShaderStage stage)
{
int index = (int)stage;
if ((uint)index >= _stagePrefixes.Length)
{
return "invalid";
}
return _stagePrefixes[index];
}
private static char GetSwizzleMask(int value)
{
return "xyzw"[value];
}
public static string GetArgumentName(int argIndex)
{
return $"{DefaultNames.ArgumentNamePrefix}{argIndex}";
}
public static AggregateType GetNodeDestType(CodeGenContext context, IAstNode node)
{
// TODO: Get rid of that function entirely and return the type from the operation generation
// functions directly, like SPIR-V does.
if (node is AstOperation operation)
{
if (operation.Inst == Instruction.Load)
{
switch (operation.StorageKind)
{
case StorageKind.ConstantBuffer:
case StorageKind.StorageBuffer:
if (!(operation.GetSource(0) is AstOperand bindingIndex) || bindingIndex.Type != OperandType.Constant)
{
throw new InvalidOperationException($"First input of {operation.Inst} with {operation.StorageKind} storage must be a constant operand.");
}
if (!(operation.GetSource(1) is AstOperand fieldIndex) || fieldIndex.Type != OperandType.Constant)
{
throw new InvalidOperationException($"Second input of {operation.Inst} with {operation.StorageKind} storage must be a constant operand.");
}
BufferDefinition buffer = operation.StorageKind == StorageKind.ConstantBuffer
? context.Config.Properties.ConstantBuffers[bindingIndex.Value]
: context.Config.Properties.StorageBuffers[bindingIndex.Value];
StructureField field = buffer.Type.Fields[fieldIndex.Value];
return field.Type & AggregateType.ElementTypeMask;
case StorageKind.Input:
case StorageKind.InputPerPatch:
case StorageKind.Output:
case StorageKind.OutputPerPatch:
if (!(operation.GetSource(0) is AstOperand varId) || varId.Type != OperandType.Constant)
{
throw new InvalidOperationException($"First input of {operation.Inst} with {operation.StorageKind} storage must be a constant operand.");
}
IoVariable ioVariable = (IoVariable)varId.Value;
bool isOutput = operation.StorageKind == StorageKind.Output || operation.StorageKind == StorageKind.OutputPerPatch;
bool isPerPatch = operation.StorageKind == StorageKind.InputPerPatch || operation.StorageKind == StorageKind.OutputPerPatch;
int location = 0;
int component = 0;
if (context.Config.HasPerLocationInputOrOutput(ioVariable, isOutput))
{
if (!(operation.GetSource(1) is AstOperand vecIndex) || vecIndex.Type != OperandType.Constant)
{
throw new InvalidOperationException($"Second input of {operation.Inst} with {operation.StorageKind} storage must be a constant operand.");
}
location = vecIndex.Value;
if (operation.SourcesCount > 2 &&
operation.GetSource(2) is AstOperand elemIndex &&
elemIndex.Type == OperandType.Constant &&
context.Config.HasPerLocationInputOrOutputComponent(ioVariable, location, elemIndex.Value, isOutput))
{
component = elemIndex.Value;
}
}
(_, AggregateType varType) = IoMap.GetGlslVariable(context.Config, ioVariable, location, component, isOutput, isPerPatch);
return varType & AggregateType.ElementTypeMask;
}
}
else if (operation.Inst == Instruction.Call)
{
AstOperand funcId = (AstOperand)operation.GetSource(0);
Debug.Assert(funcId.Type == OperandType.Constant);
return context.GetFunction(funcId.Value).ReturnType;
}
else if (operation.Inst == Instruction.VectorExtract)
{
return GetNodeDestType(context, operation.GetSource(0)) & ~AggregateType.ElementCountMask;
}
else if (operation is AstTextureOperation texOp)
{
if (texOp.Inst == Instruction.ImageLoad ||
texOp.Inst == Instruction.ImageStore ||
texOp.Inst == Instruction.ImageAtomic)
{
return texOp.GetVectorType(texOp.Format.GetComponentType());
}
else if (texOp.Inst == Instruction.TextureSample)
{
return texOp.GetVectorType(GetDestVarType(operation.Inst));
}
}
return GetDestVarType(operation.Inst);
}
else if (node is AstOperand operand)
{
if (operand.Type == OperandType.Argument)
{
int argIndex = operand.Value;
return context.CurrentFunction.GetArgumentType(argIndex);
}
return OperandInfo.GetVarType(operand);
}
else
{
throw new ArgumentException($"Invalid node type \"{node?.GetType().Name ?? "null"}\".");
}
}
}
}
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