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Extend bindless elimination to catch a few more specific cases (#6921)

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* Catch more cases on bindless elimination

* Match blocks with the same comparison condition

* Shader cache version bump
This commit is contained in:
gdkchan 2024-06-16 14:46:27 -03:00 committed by GitHub
parent 5a878ae9af
commit 3193ef1083
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GPG key ID: B5690EEEBB952194
8 changed files with 137 additions and 30 deletions
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2
src/Ryujinx.Graphics.Gpu/Shader/DiskCache/DiskCacheHostStorage.cs
View file

@ -22,7 +22,7 @@ namespace Ryujinx.Graphics.Gpu.Shader.DiskCache
private const ushort FileFormatVersionMajor = 1;
private const ushort FileFormatVersionMinor = 2;
private const uint FileFormatVersionPacked = ((uint)FileFormatVersionMajor << 16) | FileFormatVersionMinor;
private const uint CodeGenVersion = 6852;
private const uint CodeGenVersion = 6921;
private const string SharedTocFileName = "shared.toc";
private const string SharedDataFileName = "shared.data";

2
src/Ryujinx.Graphics.Shader/Instructions/InstEmitPredicate.cs
View file

@ -24,7 +24,7 @@ namespace Ryujinx.Graphics.Shader.Instructions
if (op.BVal)
{
context.Copy(dest, context.ConditionalSelect(res, ConstF(1), Const(0)));
context.Copy(dest, context.ConditionalSelect(res, ConstF(1), ConstF(0)));
}
else
{

20
src/Ryujinx.Graphics.Shader/IntermediateRepresentation/Instruction.cs
View file

@ -156,6 +156,26 @@ namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
return false;
}
public static bool IsComparison(this Instruction inst)
{
switch (inst & Instruction.Mask)
{
case Instruction.CompareEqual:
case Instruction.CompareGreater:
case Instruction.CompareGreaterOrEqual:
case Instruction.CompareGreaterOrEqualU32:
case Instruction.CompareGreaterU32:
case Instruction.CompareLess:
case Instruction.CompareLessOrEqual:
case Instruction.CompareLessOrEqualU32:
case Instruction.CompareLessU32:
case Instruction.CompareNotEqual:
return true;
}
return false;
}
public static bool IsTextureQuery(this Instruction inst)
{
inst &= Instruction.Mask;

8
src/Ryujinx.Graphics.Shader/Translation/Optimizations/BindlessElimination.cs
View file

@ -141,16 +141,16 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
return true;
}
private static bool IsBindlessAccessAllowed(Operand nvHandle)
private static bool IsBindlessAccessAllowed(Operand bindlessHandle)
{
if (nvHandle.Type == OperandType.ConstantBuffer)
if (bindlessHandle.Type == OperandType.ConstantBuffer)
{
// Bindless access with handles from constant buffer is allowed.
return true;
}
if (nvHandle.AsgOp is not Operation handleOp ||
if (bindlessHandle.AsgOp is not Operation handleOp ||
handleOp.Inst != Instruction.Load ||
(handleOp.StorageKind != StorageKind.Input && handleOp.StorageKind != StorageKind.StorageBuffer))
{
@ -300,7 +300,7 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
resourceManager,
gpuAccessor,
texOp,
TextureHandle.PackOffsets(src0.GetCbufOffset(), ((src1.Value >> 20) & 0xfff), handleType),
TextureHandle.PackOffsets(src0.GetCbufOffset(), (src1.Value >> 20) & 0xfff, handleType),
TextureHandle.PackSlots(src0.GetCbufSlot(), 0),
rewriteSamplerType,
isImage: false);

8
src/Ryujinx.Graphics.Shader/Translation/Optimizations/BindlessToArray.cs
View file

@ -126,7 +126,9 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
continue;
}
if (texOp.GetSource(0).AsgOp is not Operation handleAsgOp)
Operand bindlessHandle = Utils.FindLastOperation(texOp.GetSource(0), block);
if (bindlessHandle.AsgOp is not Operation handleAsgOp)
{
continue;
}
@ -137,8 +139,8 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
if (handleAsgOp.Inst == Instruction.BitwiseOr)
{
Operand src0 = handleAsgOp.GetSource(0);
Operand src1 = handleAsgOp.GetSource(1);
Operand src0 = Utils.FindLastOperation(handleAsgOp.GetSource(0), block);
Operand src1 = Utils.FindLastOperation(handleAsgOp.GetSource(1), block);
if (src0.Type == OperandType.ConstantBuffer && src1.AsgOp is Operation)
{

21
src/Ryujinx.Graphics.Shader/Translation/Optimizations/Optimizer.cs
View file

@ -152,18 +152,14 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
{
// If all phi sources are the same, we can propagate it and remove the phi.
Operand firstSrc = phi.GetSource(0);
for (int index = 1; index < phi.SourcesCount; index++)
if (!Utils.AreAllSourcesTheSameOperand(phi))
{
if (!IsSameOperand(firstSrc, phi.GetSource(index)))
{
return false;
}
return false;
}
// All sources are equal, we can propagate the value.
Operand firstSrc = phi.GetSource(0);
Operand dest = phi.Dest;
INode[] uses = dest.UseOps.ToArray();
@ -182,17 +178,6 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
return true;
}
private static bool IsSameOperand(Operand x, Operand y)
{
if (x.Type != y.Type || x.Value != y.Value)
{
return false;
}
// TODO: Handle Load operations with the same storage and the same constant parameters.
return x.Type == OperandType.Constant || x.Type == OperandType.ConstantBuffer;
}
private static bool PropagatePack(Operation packOp)
{
// Propagate pack source operands to uses by unpack

30
src/Ryujinx.Graphics.Shader/Translation/Optimizations/Simplification.cs
View file

@ -31,6 +31,10 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
TryEliminateBitwiseOr(operation);
break;
case Instruction.CompareNotEqual:
TryEliminateCompareNotEqual(operation);
break;
case Instruction.ConditionalSelect:
TryEliminateConditionalSelect(operation);
break;
@ -174,6 +178,32 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
}
}
private static void TryEliminateCompareNotEqual(Operation operation)
{
// Comparison instruction returns 0 if the result is false, and -1 if true.
// Doing a not equal zero comparison on the result is redundant, so we can just copy the first result in this case.
Operand lhs = operation.GetSource(0);
Operand rhs = operation.GetSource(1);
if (lhs.Type == OperandType.Constant)
{
(lhs, rhs) = (rhs, lhs);
}
if (rhs.Type != OperandType.Constant || rhs.Value != 0)
{
return;
}
if (lhs.AsgOp is not Operation compareOp || !compareOp.Inst.IsComparison())
{
return;
}
operation.TurnIntoCopy(lhs);
}
private static void TryEliminateConditionalSelect(Operation operation)
{
Operand cond = operation.GetSource(0);

76
src/Ryujinx.Graphics.Shader/Translation/Optimizations/Utils.cs
View file

@ -34,6 +34,50 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
return elemIndexSrc.Type == OperandType.Constant && elemIndexSrc.Value == elemIndex;
}
private static bool IsSameOperand(Operand x, Operand y)
{
if (x.Type != y.Type || x.Value != y.Value)
{
return false;
}
// TODO: Handle Load operations with the same storage and the same constant parameters.
return x == y || x.Type == OperandType.Constant || x.Type == OperandType.ConstantBuffer;
}
private static bool AreAllSourcesEqual(INode node, INode otherNode)
{
if (node.SourcesCount != otherNode.SourcesCount)
{
return false;
}
for (int index = 0; index < node.SourcesCount; index++)
{
if (!IsSameOperand(node.GetSource(index), otherNode.GetSource(index)))
{
return false;
}
}
return true;
}
public static bool AreAllSourcesTheSameOperand(INode node)
{
Operand firstSrc = node.GetSource(0);
for (int index = 1; index < node.SourcesCount; index++)
{
if (!IsSameOperand(firstSrc, node.GetSource(index)))
{
return false;
}
}
return true;
}
private static Operation FindBranchSource(BasicBlock block)
{
foreach (BasicBlock sourceBlock in block.Predecessors)
@ -55,6 +99,19 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
return inst == Instruction.BranchIfFalse || inst == Instruction.BranchIfTrue;
}
private static bool IsSameCondition(Operand currentCondition, Operand queryCondition)
{
if (currentCondition == queryCondition)
{
return true;
}
return currentCondition.AsgOp is Operation currentOperation &&
queryCondition.AsgOp is Operation queryOperation &&
currentOperation.Inst == queryOperation.Inst &&
AreAllSourcesEqual(currentOperation, queryOperation);
}
private static bool BlockConditionsMatch(BasicBlock currentBlock, BasicBlock queryBlock)
{
// Check if all the conditions for the query block are satisfied by the current block.
@ -70,10 +127,10 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
return currentBranch != null && queryBranch != null &&
currentBranch.Inst == queryBranch.Inst &&
currentCondition == queryCondition;
IsSameCondition(currentCondition, queryCondition);
}
public static Operand FindLastOperation(Operand source, BasicBlock block)
public static Operand FindLastOperation(Operand source, BasicBlock block, bool recurse = true)
{
if (source.AsgOp is PhiNode phiNode)
{
@ -84,10 +141,23 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
for (int i = phiNode.SourcesCount - 1; i >= 0; i--)
{
BasicBlock phiBlock = phiNode.GetBlock(i);
Operand phiSource = phiNode.GetSource(i);
if (BlockConditionsMatch(block, phiBlock))
{
return phiNode.GetSource(i);
return phiSource;
}
else if (recurse && phiSource.AsgOp is PhiNode)
{
// Phi source is another phi.
// Let's check if that phi has a block that matches our condition.
Operand match = FindLastOperation(phiSource, block, false);
if (match != phiSource)
{
return match;
}
}
}
}