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using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.StructuredIr;
using Ryujinx.Graphics.Shader.Translation;
using System;
using static Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions.InstGenBallot;
using static Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions.InstGenCall;
using static Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions.InstGenFSI;
using static Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions.InstGenHelper;
using static Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions.InstGenMemory;
using static Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions.InstGenPacking;
using static Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions.InstGenVector;
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(context, operand);
}
throw new ArgumentException($"Invalid node type \"{node?.GetType().Name ?? "null"}\".");
}
public static string Negate(CodeGenContext context, AstOperation operation, InstInfo info)
{
IAstNode src = operation.GetSource(0);
AggregateType type = GetSrcVarType(operation.Inst, 0);
string srcExpr = GetSoureExpr(context, src, type);
string zero;
if (type == AggregateType.FP64)
{
zero = "0.0";
}
else
{
NumberFormatter.TryFormat(0, type, out zero);
}
// Starting in the 496.13 NVIDIA driver, there's an issue with assigning variables to negated expressions.
// (-expr) does not work, but (0.0 - expr) does. This should be removed once the issue is resolved.
return $"{zero} - {Enclose(srcExpr, src, operation.Inst, info, false)}";
}
private static string GetExpression(CodeGenContext context, AstOperation operation)
{
Instruction inst = operation.Inst;
InstInfo info = GetInstructionInfo(inst);
if ((info.Type & InstType.Call) != 0)
{
bool atomic = (info.Type & InstType.Atomic) != 0;
int arity = (int)(info.Type & InstType.ArityMask);
string args = string.Empty;
if (atomic && operation.StorageKind == StorageKind.StorageBuffer)
{
args = GenerateLoadOrStore(context, operation, isStore: false);
AggregateType dstType = operation.Inst == Instruction.AtomicMaxS32 || operation.Inst == Instruction.AtomicMinS32
? AggregateType.S32
: AggregateType.U32;
for (int argIndex = operation.SourcesCount - arity + 2; argIndex < operation.SourcesCount; argIndex++)
{
args += ", " + GetSoureExpr(context, operation.GetSource(argIndex), dstType);
}
}
else if (atomic && operation.StorageKind == StorageKind.SharedMemory)
{
args = LoadShared(context, operation);
// For shared memory access, the second argument is unused and should be ignored.
// It is there to make both storage and shared access have the same number of arguments.
// For storage, both inputs are consumed when the argument index is 0, so we should skip it here.
for (int argIndex = 2; argIndex < arity; argIndex++)
{
args += ", ";
AggregateType dstType = GetSrcVarType(inst, argIndex);
args += GetSoureExpr(context, operation.GetSource(argIndex), dstType);
}
}
else
{
for (int argIndex = 0; argIndex < arity; argIndex++)
{
if (argIndex != 0)
{
args += ", ";
}
AggregateType 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;
// Return may optionally have a return value (and in this case it is unary).
if (inst == Instruction.Return && operation.SourcesCount != 0)
{
return $"{op} {GetSoureExpr(context, operation.GetSource(0), context.CurrentFunction.ReturnType)}";
}
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 $"{expr[0]} {op[0]} {expr[1]} {op[1]} {expr[2]}";
}
}
else if ((info.Type & InstType.Special) != 0)
{
switch (inst & Instruction.Mask)
{
case Instruction.Ballot:
return Ballot(context, operation);
case Instruction.Call:
return Call(context, operation);
case Instruction.FSIBegin:
return FSIBegin(context);
case Instruction.FSIEnd:
return FSIEnd(context);
case Instruction.ImageLoad:
case Instruction.ImageStore:
case Instruction.ImageAtomic:
return ImageLoadOrStore(context, operation);
case Instruction.Load:
return Load(context, operation);
case Instruction.LoadLocal:
return LoadLocal(context, operation);
case Instruction.LoadShared:
return LoadShared(context, operation);
case Instruction.Lod:
return Lod(context, operation);
case Instruction.Negate:
return Negate(context, operation, info);
case Instruction.PackDouble2x32:
return PackDouble2x32(context, operation);
case Instruction.PackHalf2x16:
return PackHalf2x16(context, operation);
case Instruction.Store:
return Store(context, operation);
case Instruction.StoreLocal:
return StoreLocal(context, operation);
case Instruction.StoreShared:
return StoreShared(context, operation);
case Instruction.StoreShared16:
return StoreShared16(context, operation);
case Instruction.StoreShared8:
return StoreShared8(context, operation);
case Instruction.TextureSample:
return TextureSample(context, operation);
case Instruction.TextureSize:
return TextureSize(context, operation);
case Instruction.UnpackDouble2x32:
return UnpackDouble2x32(context, operation);
case Instruction.UnpackHalf2x16:
return UnpackHalf2x16(context, operation);
case Instruction.VectorExtract:
return VectorExtract(context, operation);
}
}
throw new InvalidOperationException($"Unexpected instruction type \"{info.Type}\".");
}
}
}
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