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Replace constant buffer access on shader with new Load instruction (#4646)

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gdkchan 2023-05-20 16:19:26 -03:00 • committed by GitHub
parent fb27042e01
commit 402f05b8ef
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42 changed files with 788 additions and 625 deletions
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32
src/Ryujinx.Graphics.Shader/Translation/Optimizations/BindlessToIndexed.cs
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@ -32,25 +32,49 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
continue;
}
if (handleAsgOp.Inst != Instruction.LoadConstant)
if (handleAsgOp.Inst != Instruction.Load ||
handleAsgOp.StorageKind != StorageKind.ConstantBuffer ||
handleAsgOp.SourcesCount != 4)
{
continue;
}
Operand ldcSrc0 = handleAsgOp.GetSource(0);
if (ldcSrc0.Type != OperandType.Constant ||
!config.ResourceManager.TryGetConstantBufferSlot(ldcSrc0.Value, out int src0CbufSlot) ||
src0CbufSlot != 2)
{
continue;
}
Operand ldcSrc1 = handleAsgOp.GetSource(1);
if (ldcSrc0.Type != OperandType.Constant || ldcSrc0.Value != 2)
// We expect field index 0 to be accessed.
if (ldcSrc1.Type != OperandType.Constant || ldcSrc1.Value != 0)
{
continue;
}
if (!(ldcSrc1.AsgOp is Operation shrOp) || shrOp.Inst != Instruction.ShiftRightU32)
Operand ldcSrc2 = handleAsgOp.GetSource(2);
// FIXME: This is missing some checks, for example, a check to ensure that the shift value is 2.
// Might be not worth fixing since if that doesn't kick in, the result will be no texture
// to access anyway which is also wrong.
// Plus this whole transform is fundamentally flawed as-is since we have no way to know the array size.
// Eventually, this should be entirely removed in favor of a implementation that supports true bindless
// texture access.
if (!(ldcSrc2.AsgOp is Operation shrOp) || shrOp.Inst != Instruction.ShiftRightU32)
{
continue;
}
if (!(shrOp.GetSource(0).AsgOp is Operation addOp) || addOp.Inst != Instruction.Add)
if (!(shrOp.GetSource(0).AsgOp is Operation shrOp2) || shrOp2.Inst != Instruction.ShiftRightU32)
{
continue;
}
if (!(shrOp2.GetSource(0).AsgOp is Operation addOp) || addOp.Inst != Instruction.Add)
{
continue;
}