Ryujinx/Ryujinx.Graphics.Shader/Instructions/InstEmitMemory.cs

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using Ryujinx.Graphics.Shader.Decoders;
using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.Translation;
using static Ryujinx.Graphics.Shader.Instructions.InstEmitHelper;
using static Ryujinx.Graphics.Shader.IntermediateRepresentation.OperandHelper;
namespace Ryujinx.Graphics.Shader.Instructions
{
static partial class InstEmit
{
private enum MemoryRegion
{
Local,
Shared
}
public static void Atom(EmitterContext context)
{
InstAtom op = context.GetOp<InstAtom>();
int sOffset = (op.Imm20 << 12) >> 12;
(Operand addrLow, Operand addrHigh) = Get40BitsAddress(context, new Register(op.SrcA, RegisterType.Gpr), op.E, sOffset);
Operand value = GetSrcReg(context, op.SrcB);
Operand res = EmitAtomicOp(context, Instruction.MrGlobal, op.Op, op.Size, addrLow, addrHigh, value);
context.Copy(GetDest(op.Dest), res);
}
public static void Atoms(EmitterContext context)
{
InstAtoms op = context.GetOp<InstAtoms>();
Operand offset = context.ShiftRightU32(GetSrcReg(context, op.SrcA), Const(2));
int sOffset = (op.Imm22 << 10) >> 10;
offset = context.IAdd(offset, Const(sOffset));
Operand value = GetSrcReg(context, op.SrcB);
AtomSize size = op.AtomsSize switch
{
AtomsSize.S32 => AtomSize.S32,
AtomsSize.U64 => AtomSize.U64,
AtomsSize.S64 => AtomSize.S64,
_ => AtomSize.U32
};
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Operand res = EmitAtomicOp(context, Instruction.MrShared, op.AtomOp, size, offset, Const(0), value);
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context.Copy(GetDest(op.Dest), res);
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}
public static void Ldc(EmitterContext context)
{
InstLdc op = context.GetOp<InstLdc>();
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if (op.LsSize > LsSize2.B64)
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{
context.Config.GpuAccessor.Log($"Invalid LDC size: {op.LsSize}.");
return;
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}
bool isSmallInt = op.LsSize < LsSize2.B32;
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int count = op.LsSize == LsSize2.B64 ? 2 : 1;
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Operand slot = Const(op.CbufSlot);
Operand srcA = GetSrcReg(context, op.SrcA);
if (op.AddressMode == AddressMode.Is || op.AddressMode == AddressMode.Isl)
{
slot = context.IAdd(slot, context.BitfieldExtractU32(srcA, Const(16), Const(16)));
srcA = context.BitwiseAnd(srcA, Const(0xffff));
}
Operand addr = context.IAdd(srcA, Const(Imm16ToSInt(op.CbufOffset)));
Operand wordOffset = context.ShiftRightU32(addr, Const(2));
Operand bitOffset = GetBitOffset(context, addr);
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for (int index = 0; index < count; index++)
{
Register dest = new Register(op.Dest + index, RegisterType.Gpr);
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if (dest.IsRZ)
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{
break;
}
Operand offset = context.IAdd(wordOffset, Const(index));
Operand value = context.LoadConstant(slot, offset);
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if (isSmallInt)
{
value = ExtractSmallInt(context, (LsSize)op.LsSize, bitOffset, value);
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}
context.Copy(Register(dest), value);
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}
}
public static void Ldg(EmitterContext context)
{
InstLdg op = context.GetOp<InstLdg>();
EmitLdg(context, op.LsSize, op.SrcA, op.Dest, Imm24ToSInt(op.Imm24), op.E);
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}
public static void Ldl(EmitterContext context)
{
InstLdl op = context.GetOp<InstLdl>();
EmitLoad(context, MemoryRegion.Local, op.LsSize, GetSrcReg(context, op.SrcA), op.Dest, Imm24ToSInt(op.Imm24));
}
public static void Lds(EmitterContext context)
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{
InstLds op = context.GetOp<InstLds>();
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EmitLoad(context, MemoryRegion.Shared, op.LsSize, GetSrcReg(context, op.SrcA), op.Dest, Imm24ToSInt(op.Imm24));
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}
public static void Red(EmitterContext context)
{
InstRed op = context.GetOp<InstRed>();
(Operand addrLow, Operand addrHigh) = Get40BitsAddress(context, new Register(op.SrcA, RegisterType.Gpr), op.E, op.Imm20);
EmitAtomicOp(context, Instruction.MrGlobal, (AtomOp)op.RedOp, op.RedSize, addrLow, addrHigh, GetDest(op.SrcB));
}
public static void Stg(EmitterContext context)
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{
InstStg op = context.GetOp<InstStg>();
EmitStg(context, op.LsSize, op.SrcA, op.Dest, Imm24ToSInt(op.Imm24), op.E);
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}
public static void Stl(EmitterContext context)
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{
InstStl op = context.GetOp<InstStl>();
EmitStore(context, MemoryRegion.Local, op.LsSize, GetSrcReg(context, op.SrcA), op.Dest, Imm24ToSInt(op.Imm24));
}
public static void Sts(EmitterContext context)
{
InstSts op = context.GetOp<InstSts>();
EmitStore(context, MemoryRegion.Shared, op.LsSize, GetSrcReg(context, op.SrcA), op.Dest, Imm24ToSInt(op.Imm24));
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}
private static Operand EmitAtomicOp(
EmitterContext context,
Instruction mr,
AtomOp op,
AtomSize type,
Operand addrLow,
Operand addrHigh,
Operand value)
{
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Operand res = Const(0);
switch (op)
{
case AtomOp.Add:
if (type == AtomSize.S32 || type == AtomSize.U32)
{
res = context.AtomicAdd(mr, addrLow, addrHigh, value);
}
else
{
context.Config.GpuAccessor.Log($"Invalid reduction type: {type}.");
}
break;
case AtomOp.And:
if (type == AtomSize.S32 || type == AtomSize.U32)
{
res = context.AtomicAnd(mr, addrLow, addrHigh, value);
}
else
{
context.Config.GpuAccessor.Log($"Invalid reduction type: {type}.");
}
break;
case AtomOp.Xor:
if (type == AtomSize.S32 || type == AtomSize.U32)
{
res = context.AtomicXor(mr, addrLow, addrHigh, value);
}
else
{
context.Config.GpuAccessor.Log($"Invalid reduction type: {type}.");
}
break;
case AtomOp.Or:
if (type == AtomSize.S32 || type == AtomSize.U32)
{
res = context.AtomicOr(mr, addrLow, addrHigh, value);
}
else
{
context.Config.GpuAccessor.Log($"Invalid reduction type: {type}.");
}
break;
case AtomOp.Max:
if (type == AtomSize.S32)
{
res = context.AtomicMaxS32(mr, addrLow, addrHigh, value);
}
else if (type == AtomSize.U32)
{
res = context.AtomicMaxU32(mr, addrLow, addrHigh, value);
}
else
{
context.Config.GpuAccessor.Log($"Invalid reduction type: {type}.");
}
break;
case AtomOp.Min:
if (type == AtomSize.S32)
{
res = context.AtomicMinS32(mr, addrLow, addrHigh, value);
}
else if (type == AtomSize.U32)
{
res = context.AtomicMinU32(mr, addrLow, addrHigh, value);
}
else
{
context.Config.GpuAccessor.Log($"Invalid reduction type: {type}.");
}
break;
}
return res;
}
private static void EmitLoad(
EmitterContext context,
MemoryRegion region,
LsSize2 size,
Operand srcA,
int rd,
int offset)
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{
if (size > LsSize2.B128)
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{
context.Config.GpuAccessor.Log($"Invalid load size: {size}.");
return;
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}
bool isSmallInt = size < LsSize2.B32;
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int count = 1;
switch (size)
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{
case LsSize2.B64: count = 2; break;
case LsSize2.B128: count = 4; break;
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}
Operand baseOffset = context.IAdd(srcA, Const(offset));
Operand wordOffset = context.ShiftRightU32(baseOffset, Const(2)); // Word offset = byte offset / 4 (one word = 4 bytes).
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Operand bitOffset = GetBitOffset(context, baseOffset);
for (int index = 0; index < count; index++)
{
Register dest = new Register(rd + index, RegisterType.Gpr);
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if (dest.IsRZ)
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{
break;
}
Operand elemOffset = context.IAdd(wordOffset, Const(index));
Operand value = null;
switch (region)
{
case MemoryRegion.Local: value = context.LoadLocal(elemOffset); break;
case MemoryRegion.Shared: value = context.LoadShared(elemOffset); break;
}
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if (isSmallInt)
{
value = ExtractSmallInt(context, (LsSize)size, bitOffset, value);
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}
context.Copy(Register(dest), value);
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}
}
private static void EmitLdg(
EmitterContext context,
LsSize size,
int ra,
int rd,
int offset,
bool extended)
{
bool isSmallInt = size < LsSize.B32;
int count = GetVectorCount(size);
(Operand addrLow, Operand addrHigh) = Get40BitsAddress(context, new Register(ra, RegisterType.Gpr), extended, offset);
Operand bitOffset = GetBitOffset(context, addrLow);
for (int index = 0; index < count; index++)
{
Register dest = new Register(rd + index, RegisterType.Gpr);
if (dest.IsRZ)
{
break;
}
Operand value = context.LoadGlobal(context.IAdd(addrLow, Const(index * 4)), addrHigh);
if (isSmallInt)
{
value = ExtractSmallInt(context, size, bitOffset, value);
}
context.Copy(Register(dest), value);
}
}
private static void EmitStore(
EmitterContext context,
MemoryRegion region,
LsSize2 size,
Operand srcA,
int rd,
int offset)
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{
if (size > LsSize2.B128)
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{
context.Config.GpuAccessor.Log($"Invalid store size: {size}.");
return;
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}
bool isSmallInt = size < LsSize2.B32;
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int count = 1;
switch (size)
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{
case LsSize2.B64: count = 2; break;
case LsSize2.B128: count = 4; break;
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}
Operand baseOffset = context.IAdd(srcA, Const(offset));
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Operand wordOffset = context.ShiftRightU32(baseOffset, Const(2));
Operand bitOffset = GetBitOffset(context, baseOffset);
for (int index = 0; index < count; index++)
{
bool isRz = rd + index >= RegisterConsts.RegisterZeroIndex;
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Operand value = Register(isRz ? rd : rd + index, RegisterType.Gpr);
Operand elemOffset = context.IAdd(wordOffset, Const(index));
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if (isSmallInt && region == MemoryRegion.Local)
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{
Operand word = context.LoadLocal(elemOffset);
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value = InsertSmallInt(context, (LsSize)size, bitOffset, word, value);
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}
if (region == MemoryRegion.Local)
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{
context.StoreLocal(elemOffset, value);
}
else if (region == MemoryRegion.Shared)
{
switch (size)
{
case LsSize2.U8:
case LsSize2.S8:
context.StoreShared8(baseOffset, value);
break;
case LsSize2.U16:
case LsSize2.S16:
context.StoreShared16(baseOffset, value);
break;
default:
context.StoreShared(elemOffset, value);
break;
}
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}
}
}
private static void EmitStg(
EmitterContext context,
LsSize2 size,
int ra,
int rd,
int offset,
bool extended)
{
if (size > LsSize2.B128)
{
context.Config.GpuAccessor.Log($"Invalid store size: {size}.");
return;
}
int count = GetVectorCount((LsSize)size);
(Operand addrLow, Operand addrHigh) = Get40BitsAddress(context, new Register(ra, RegisterType.Gpr), extended, offset);
Operand bitOffset = GetBitOffset(context, addrLow);
for (int index = 0; index < count; index++)
{
bool isRz = rd + index >= RegisterConsts.RegisterZeroIndex;
Operand value = Register(isRz ? rd : rd + index, RegisterType.Gpr);
Operand addrLowOffset = context.IAdd(addrLow, Const(index * 4));
if (size == LsSize2.U8 || size == LsSize2.S8)
{
context.StoreGlobal8(addrLowOffset, addrHigh, value);
}
else if (size == LsSize2.U16 || size == LsSize2.S16)
{
context.StoreGlobal16(addrLowOffset, addrHigh, value);
}
else
{
context.StoreGlobal(addrLowOffset, addrHigh, value);
}
}
}
private static int GetVectorCount(LsSize size)
{
switch (size)
{
case LsSize.B64:
return 2;
case LsSize.B128:
case LsSize.UB128:
return 4;
}
return 1;
}
private static (Operand, Operand) Get40BitsAddress(
EmitterContext context,
Register ra,
bool extended,
int offset)
{
Operand addrLow = Register(ra);
Operand addrHigh;
if (extended && !ra.IsRZ)
{
addrHigh = Register(ra.Index + 1, RegisterType.Gpr);
}
else
{
addrHigh = Const(0);
}
Operand offs = Const(offset);
addrLow = context.IAdd(addrLow, offs);
if (extended)
{
Operand carry = context.ICompareLessUnsigned(addrLow, offs);
addrHigh = context.IAdd(addrHigh, context.ConditionalSelect(carry, Const(1), Const(0)));
}
return (addrLow, addrHigh);
}
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private static Operand GetBitOffset(EmitterContext context, Operand baseOffset)
{
// Note: bit offset = (baseOffset & 0b11) * 8.
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// Addresses should be always aligned to the integer type,
// so we don't need to take unaligned addresses into account.
return context.ShiftLeft(context.BitwiseAnd(baseOffset, Const(3)), Const(3));
}
private static Operand ExtractSmallInt(
EmitterContext context,
LsSize size,
Operand bitOffset,
Operand value)
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{
value = context.ShiftRightU32(value, bitOffset);
switch (size)
{
case LsSize.U8: value = ZeroExtendTo32(context, value, 8); break;
case LsSize.U16: value = ZeroExtendTo32(context, value, 16); break;
case LsSize.S8: value = SignExtendTo32(context, value, 8); break;
case LsSize.S16: value = SignExtendTo32(context, value, 16); break;
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}
return value;
}
private static Operand InsertSmallInt(
EmitterContext context,
LsSize size,
Operand bitOffset,
Operand word,
Operand value)
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{
switch (size)
{
case LsSize.U8:
case LsSize.S8:
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value = context.BitwiseAnd(value, Const(0xff));
value = context.BitfieldInsert(word, value, bitOffset, Const(8));
break;
case LsSize.U16:
case LsSize.S16:
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value = context.BitwiseAnd(value, Const(0xffff));
value = context.BitfieldInsert(word, value, bitOffset, Const(16));
break;
}
return value;
}
}
}