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Ryujinx/Ryujinx.Graphics.Shader/Instructions/InstEmitMove.cs
gdkchan b8eb6abecc
Refactor shader GPU state and memory access (#1203)
* Refactor shader GPU state and memory access

* Fix NVDEC project build

* Address PR feedback and add missing XML comments
2020-05-06 11:02:28 +10:00

142 lines
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5.2 KiB
C#

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
{
public static void Mov(EmitterContext context)
{
context.Copy(GetDest(context), GetSrcB(context));
}
public static void R2p(EmitterContext context)
{
OpCodeAlu op = (OpCodeAlu)context.CurrOp;
bool isCC = op.RawOpCode.Extract(40);
int shift = op.RawOpCode.Extract(41, 2) * 8;
Operand value = GetSrcA(context);
Operand mask = GetSrcB(context);
Operand Test(Operand value, int bit)
{
return context.ICompareNotEqual(context.BitwiseAnd(value, Const(1 << bit)), Const(0));
}
if (isCC)
{
// TODO: Support Register to condition code flags copy.
context.Config.GpuAccessor.Log("R2P.CC not implemented.");
}
else
{
for (int bit = 0; bit < 7; bit++)
{
Operand pred = Register(bit, RegisterType.Predicate);
Operand res = context.ConditionalSelect(Test(mask, bit), Test(value, bit + shift), pred);
context.Copy(pred, res);
}
}
}
public static void S2r(EmitterContext context)
{
// TODO: Better impl.
OpCodeAlu op = (OpCodeAlu)context.CurrOp;
SystemRegister sysReg = (SystemRegister)op.RawOpCode.Extract(20, 8);
Operand src;
switch (sysReg)
{
case SystemRegister.LaneId: src = Attribute(AttributeConsts.LaneId); break;
// TODO: Use value from Y direction GPU register.
case SystemRegister.YDirection: src = ConstF(1); break;
case SystemRegister.ThreadId:
{
Operand tidX = Attribute(AttributeConsts.ThreadIdX);
Operand tidY = Attribute(AttributeConsts.ThreadIdY);
Operand tidZ = Attribute(AttributeConsts.ThreadIdZ);
tidY = context.ShiftLeft(tidY, Const(16));
tidZ = context.ShiftLeft(tidZ, Const(26));
src = context.BitwiseOr(tidX, context.BitwiseOr(tidY, tidZ));
break;
}
case SystemRegister.ThreadIdX: src = Attribute(AttributeConsts.ThreadIdX); break;
case SystemRegister.ThreadIdY: src = Attribute(AttributeConsts.ThreadIdY); break;
case SystemRegister.ThreadIdZ: src = Attribute(AttributeConsts.ThreadIdZ); break;
case SystemRegister.CtaIdX: src = Attribute(AttributeConsts.CtaIdX); break;
case SystemRegister.CtaIdY: src = Attribute(AttributeConsts.CtaIdY); break;
case SystemRegister.CtaIdZ: src = Attribute(AttributeConsts.CtaIdZ); break;
case SystemRegister.EqMask: src = Attribute(AttributeConsts.EqMask); break;
case SystemRegister.LtMask: src = Attribute(AttributeConsts.LtMask); break;
case SystemRegister.LeMask: src = Attribute(AttributeConsts.LeMask); break;
case SystemRegister.GtMask: src = Attribute(AttributeConsts.GtMask); break;
case SystemRegister.GeMask: src = Attribute(AttributeConsts.GeMask); break;
default: src = Const(0); break;
}
context.Copy(GetDest(context), src);
}
public static void Sel(EmitterContext context)
{
Operand pred = GetPredicate39(context);
Operand srcA = GetSrcA(context);
Operand srcB = GetSrcB(context);
Operand res = context.ConditionalSelect(pred, srcA, srcB);
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);
}
}
}