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Fix shaders with mixed PBK and SSY addresses on the stack (#2329)

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* Fix shaders with mixed PBK and SSY addresses on the stack

* Address PR feedback and nits
This commit is contained in:
gdkchan 2021-06-02 20:41:53 -03:00 committed by GitHub
parent b84ba43406
commit 3b90adcd1d
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 64 additions and 29 deletions
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2
Ryujinx.Graphics.Gpu/Shader/ShaderCache.cs
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@ -36,7 +36,7 @@ namespace Ryujinx.Graphics.Gpu.Shader
/// <summary>
/// Version of the codegen (to be changed when codegen or guest format change).
/// </summary>
private const ulong ShaderCodeGenVersion = 2317;
private const ulong ShaderCodeGenVersion = 2329;
// Progress reporting helpers
private volatile int _shaderCount;

58
Ryujinx.Graphics.Shader/Decoders/Decoder.cs
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@ -318,6 +318,12 @@ namespace Ryujinx.Graphics.Shader.Decoders
opCode is OpCodeExit;
}
private enum MergeType
{
Brk = 0,
Sync = 1
}
private struct PathBlockState
{
public Block Block { get; }
@ -332,6 +338,7 @@ namespace Ryujinx.Graphics.Shader.Decoders
private RestoreType _restoreType;
private ulong _restoreValue;
private MergeType _restoreMergeType;
public bool ReturningFromVisit => _restoreType != RestoreType.None;
@ -340,6 +347,7 @@ namespace Ryujinx.Graphics.Shader.Decoders
Block = block;
_restoreType = RestoreType.None;
_restoreValue = 0;
_restoreMergeType = default;
}
public PathBlockState(int oldStackSize)
@ -347,20 +355,22 @@ namespace Ryujinx.Graphics.Shader.Decoders
Block = null;
_restoreType = RestoreType.PopPushOp;
_restoreValue = (ulong)oldStackSize;
_restoreMergeType = default;
}
public PathBlockState(ulong syncAddress)
public PathBlockState(ulong syncAddress, MergeType mergeType)
{
Block = null;
_restoreType = RestoreType.PushBranchOp;
_restoreValue = syncAddress;
_restoreMergeType = mergeType;
}
public void RestoreStackState(Stack<ulong> branchStack)
public void RestoreStackState(Stack<(ulong, MergeType)> branchStack)
{
if (_restoreType == RestoreType.PushBranchOp)
{
branchStack.Push(_restoreValue);
branchStack.Push((_restoreValue, _restoreMergeType));
}
else if (_restoreType == RestoreType.PopPushOp)
{
@ -380,7 +390,7 @@ namespace Ryujinx.Graphics.Shader.Decoders
HashSet<Block> visited = new HashSet<Block>();
Stack<ulong> branchStack = new Stack<ulong>();
Stack<(ulong, MergeType)> branchStack = new Stack<(ulong, MergeType)>();
void Push(PathBlockState pbs)
{
@ -426,7 +436,9 @@ namespace Ryujinx.Graphics.Shader.Decoders
for (int index = pushOpIndex; index < pushOpsCount; index++)
{
branchStack.Push(current.PushOpCodes[index].GetAbsoluteAddress());
OpCodePush currentPushOp = current.PushOpCodes[index];
MergeType pushMergeType = currentPushOp.Emitter == InstEmit.Ssy ? MergeType.Sync : MergeType.Brk;
branchStack.Push((currentPushOp.GetAbsoluteAddress(), pushMergeType));
}
}
@ -452,27 +464,51 @@ namespace Ryujinx.Graphics.Shader.Decoders
}
else if (current.GetLastOp() is OpCodeBranchPop op)
{
ulong targetAddress = branchStack.Pop();
MergeType popMergeType = op.Emitter == InstEmit.Sync ? MergeType.Sync : MergeType.Brk;
bool found = true;
ulong targetAddress = 0UL;
MergeType mergeType;
do
{
if (branchStack.Count == 0)
{
branchStack.Push(targetAddress);
found = false;
break;
}
(targetAddress, mergeType) = branchStack.Pop();
// Push the target address (this will be used to push the address
// back into the SSY/PBK stack when we return from that block),
Push(new PathBlockState(targetAddress, mergeType));
}
while (mergeType != popMergeType);
// Make sure we found the correct address,
// the push and pop instruction types must match, so:
// - BRK can only consume addresses pushed by PBK.
// - SYNC can only consume addresses pushed by SSY.
if (found)
{
if (branchStack.Count == 0)
{
// If the entire stack was consumed, then the current pop instruction
// just consumed the address from out push instruction.
op.Targets.Add(pushOp, op.Targets.Count);
pushOp.PopOps.TryAdd(op, Local());
}
else
{
// First we push the target address (this will be used to push the
// address back into the SSY/PBK stack when we return from that block),
// then we push the block itself into the work "queue" (well, it's a stack)
// Push the block itself into the work "queue" (well, it's a stack)
// for processing.
Push(new PathBlockState(targetAddress));
Push(new PathBlockState(blocks[targetAddress]));
}
}
}
}
}
}
}

1
Ryujinx.Graphics.Shader/Translation/Optimizations/Optimizer.cs
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@ -1,5 +1,4 @@
using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;