mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-12-19 12:42:01 +00:00
492 lines
No EOL
20 KiB
C#
492 lines
No EOL
20 KiB
C#
using Ryujinx.Graphics.Shader.Decoders;
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using Ryujinx.Graphics.Shader.IntermediateRepresentation;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Numerics;
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using System.Runtime.CompilerServices;
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using static Ryujinx.Graphics.Shader.IntermediateRepresentation.OperandHelper;
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namespace Ryujinx.Graphics.Shader.Translation
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{
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class EmitterContext
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{
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public DecodedProgram Program { get; }
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public ShaderConfig Config { get; }
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public bool IsNonMain { get; }
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public Block CurrBlock { get; set; }
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public InstOp CurrOp { get; set; }
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public int OperationsCount => _operations.Count;
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private readonly struct BrxTarget
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{
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public readonly Operand Selector;
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public readonly int ExpectedValue;
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public readonly ulong NextTargetAddress;
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public BrxTarget(Operand selector, int expectedValue, ulong nextTargetAddress)
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{
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Selector = selector;
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ExpectedValue = expectedValue;
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NextTargetAddress = nextTargetAddress;
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}
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}
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private class BlockLabel
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{
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public readonly Operand Label;
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public BrxTarget BrxTarget;
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public BlockLabel(Operand label)
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{
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Label = label;
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}
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}
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private readonly List<Operation> _operations;
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private readonly Dictionary<ulong, BlockLabel> _labels;
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public EmitterContext(DecodedProgram program, ShaderConfig config, bool isNonMain)
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{
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Program = program;
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Config = config;
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IsNonMain = isNonMain;
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_operations = new List<Operation>();
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_labels = new Dictionary<ulong, BlockLabel>();
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EmitStart();
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}
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private void EmitStart()
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{
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if (Config.Stage == ShaderStage.Vertex &&
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Config.Options.TargetApi == TargetApi.Vulkan &&
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(Config.Options.Flags & TranslationFlags.VertexA) == 0)
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{
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// Vulkan requires the point size to be always written on the shader if the primitive topology is points.
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this.Store(StorageKind.Output, IoVariable.PointSize, null, ConstF(Config.GpuAccessor.QueryPointSize()));
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}
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}
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public T GetOp<T>() where T : unmanaged
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{
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Debug.Assert(Unsafe.SizeOf<T>() == sizeof(ulong));
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ulong op = CurrOp.RawOpCode;
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return Unsafe.As<ulong, T>(ref op);
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}
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public Operand Add(Instruction inst, Operand dest = null, params Operand[] sources)
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{
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Operation operation = new Operation(inst, dest, sources);
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_operations.Add(operation);
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return dest;
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}
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public Operand Add(Instruction inst, StorageKind storageKind, Operand dest = null, params Operand[] sources)
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{
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Operation operation = new Operation(inst, storageKind, dest, sources);
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_operations.Add(operation);
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return dest;
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}
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public (Operand, Operand) Add(Instruction inst, (Operand, Operand) dest, params Operand[] sources)
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{
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Operand[] dests = new[] { dest.Item1, dest.Item2 };
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Operation operation = new Operation(inst, 0, dests, sources);
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Add(operation);
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return dest;
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}
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public void Add(Operation operation)
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{
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_operations.Add(operation);
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}
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public TextureOperation CreateTextureOperation(
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Instruction inst,
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SamplerType type,
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TextureFlags flags,
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int handle,
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int compIndex,
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Operand[] dests,
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params Operand[] sources)
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{
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return CreateTextureOperation(inst, type, TextureFormat.Unknown, flags, handle, compIndex, dests, sources);
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}
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public TextureOperation CreateTextureOperation(
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Instruction inst,
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SamplerType type,
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TextureFormat format,
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TextureFlags flags,
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int handle,
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int compIndex,
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Operand[] dests,
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params Operand[] sources)
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{
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if (!flags.HasFlag(TextureFlags.Bindless))
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{
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Config.SetUsedTexture(inst, type, format, flags, TextureOperation.DefaultCbufSlot, handle);
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}
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return new TextureOperation(inst, type, format, flags, handle, compIndex, dests, sources);
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}
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public void FlagAttributeRead(int attribute)
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{
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if (Config.Stage == ShaderStage.Vertex && attribute == AttributeConsts.InstanceId)
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{
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Config.SetUsedFeature(FeatureFlags.InstanceId);
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}
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else if (Config.Stage == ShaderStage.Fragment)
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{
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switch (attribute)
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{
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case AttributeConsts.PositionX:
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case AttributeConsts.PositionY:
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Config.SetUsedFeature(FeatureFlags.FragCoordXY);
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break;
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}
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}
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}
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public void FlagAttributeWritten(int attribute)
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{
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if (Config.Stage == ShaderStage.Vertex)
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{
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switch (attribute)
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{
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case AttributeConsts.ClipDistance0:
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case AttributeConsts.ClipDistance1:
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case AttributeConsts.ClipDistance2:
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case AttributeConsts.ClipDistance3:
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case AttributeConsts.ClipDistance4:
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case AttributeConsts.ClipDistance5:
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case AttributeConsts.ClipDistance6:
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case AttributeConsts.ClipDistance7:
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Config.SetClipDistanceWritten((attribute - AttributeConsts.ClipDistance0) / 4);
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break;
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}
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}
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if (Config.Stage != ShaderStage.Fragment && attribute == AttributeConsts.Layer)
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{
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Config.SetUsedFeature(FeatureFlags.RtLayer);
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}
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}
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public void MarkLabel(Operand label)
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{
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Add(Instruction.MarkLabel, label);
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}
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public Operand GetLabel(ulong address)
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{
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return EnsureBlockLabel(address).Label;
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}
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public void SetBrxTarget(ulong address, Operand selector, int targetValue, ulong nextTargetAddress)
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{
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BlockLabel blockLabel = EnsureBlockLabel(address);
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Debug.Assert(blockLabel.BrxTarget.Selector == null);
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blockLabel.BrxTarget = new BrxTarget(selector, targetValue, nextTargetAddress);
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}
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public void EnterBlock(ulong address)
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{
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BlockLabel blockLabel = EnsureBlockLabel(address);
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MarkLabel(blockLabel.Label);
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BrxTarget brxTarget = blockLabel.BrxTarget;
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if (brxTarget.Selector != null)
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{
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this.BranchIfFalse(GetLabel(brxTarget.NextTargetAddress), this.ICompareEqual(brxTarget.Selector, Const(brxTarget.ExpectedValue)));
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}
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}
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private BlockLabel EnsureBlockLabel(ulong address)
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{
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if (!_labels.TryGetValue(address, out BlockLabel blockLabel))
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{
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blockLabel = new BlockLabel(Label());
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_labels.Add(address, blockLabel);
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}
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return blockLabel;
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}
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public void PrepareForVertexReturn()
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{
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if (Config.GpuAccessor.QueryViewportTransformDisable())
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{
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Operand x = this.Load(StorageKind.Output, IoVariable.Position, null, Const(0));
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Operand y = this.Load(StorageKind.Output, IoVariable.Position, null, Const(1));
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Operand xScale = this.Load(StorageKind.Input, IoVariable.SupportBlockViewInverse, null, Const(0));
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Operand yScale = this.Load(StorageKind.Input, IoVariable.SupportBlockViewInverse, null, Const(1));
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Operand negativeOne = ConstF(-1.0f);
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this.Store(StorageKind.Output, IoVariable.Position, null, Const(0), this.FPFusedMultiplyAdd(x, xScale, negativeOne));
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this.Store(StorageKind.Output, IoVariable.Position, null, Const(1), this.FPFusedMultiplyAdd(y, yScale, negativeOne));
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}
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if (Config.Options.TargetApi == TargetApi.Vulkan && Config.GpuAccessor.QueryTransformDepthMinusOneToOne())
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{
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Operand z = this.Load(StorageKind.Output, IoVariable.Position, null, Const(2));
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Operand w = this.Load(StorageKind.Output, IoVariable.Position, null, Const(3));
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Operand halfW = this.FPMultiply(w, ConstF(0.5f));
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this.Store(StorageKind.Output, IoVariable.Position, null, Const(2), this.FPFusedMultiplyAdd(z, ConstF(0.5f), halfW));
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}
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if (Config.Stage != ShaderStage.Geometry && Config.HasLayerInputAttribute)
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{
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Config.SetUsedFeature(FeatureFlags.RtLayer);
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int attrVecIndex = Config.GpLayerInputAttribute >> 2;
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int attrComponentIndex = Config.GpLayerInputAttribute & 3;
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Operand layer = this.Load(StorageKind.Output, IoVariable.UserDefined, null, Const(attrVecIndex), Const(attrComponentIndex));
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this.Store(StorageKind.Output, IoVariable.Layer, null, layer);
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}
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}
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public void PrepareForVertexReturn(out Operand oldXLocal, out Operand oldYLocal, out Operand oldZLocal)
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{
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if (Config.GpuAccessor.QueryViewportTransformDisable())
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{
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oldXLocal = Local();
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this.Copy(oldXLocal, this.Load(StorageKind.Output, IoVariable.Position, null, Const(0)));
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oldYLocal = Local();
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this.Copy(oldYLocal, this.Load(StorageKind.Output, IoVariable.Position, null, Const(1)));
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}
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else
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{
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oldXLocal = null;
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oldYLocal = null;
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}
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if (Config.Options.TargetApi == TargetApi.Vulkan && Config.GpuAccessor.QueryTransformDepthMinusOneToOne())
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{
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oldZLocal = Local();
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this.Copy(oldZLocal, this.Load(StorageKind.Output, IoVariable.Position, null, Const(2)));
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}
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else
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{
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oldZLocal = null;
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}
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PrepareForVertexReturn();
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}
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public void PrepareForReturn()
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{
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if (IsNonMain)
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{
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return;
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}
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if (Config.LastInVertexPipeline &&
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(Config.Stage == ShaderStage.Vertex || Config.Stage == ShaderStage.TessellationEvaluation) &&
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(Config.Options.Flags & TranslationFlags.VertexA) == 0)
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{
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PrepareForVertexReturn();
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}
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else if (Config.Stage == ShaderStage.Geometry)
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{
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void WritePositionOutput(int primIndex)
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{
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Operand x = this.Load(StorageKind.Input, IoVariable.Position, Const(primIndex), Const(0));
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Operand y = this.Load(StorageKind.Input, IoVariable.Position, Const(primIndex), Const(1));
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Operand z = this.Load(StorageKind.Input, IoVariable.Position, Const(primIndex), Const(2));
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Operand w = this.Load(StorageKind.Input, IoVariable.Position, Const(primIndex), Const(3));
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this.Store(StorageKind.Output, IoVariable.Position, null, Const(0), x);
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this.Store(StorageKind.Output, IoVariable.Position, null, Const(1), y);
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this.Store(StorageKind.Output, IoVariable.Position, null, Const(2), z);
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this.Store(StorageKind.Output, IoVariable.Position, null, Const(3), w);
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}
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void WriteUserDefinedOutput(int index, int primIndex)
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{
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Operand x = this.Load(StorageKind.Input, IoVariable.UserDefined, Const(index), Const(primIndex), Const(0));
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Operand y = this.Load(StorageKind.Input, IoVariable.UserDefined, Const(index), Const(primIndex), Const(1));
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Operand z = this.Load(StorageKind.Input, IoVariable.UserDefined, Const(index), Const(primIndex), Const(2));
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Operand w = this.Load(StorageKind.Input, IoVariable.UserDefined, Const(index), Const(primIndex), Const(3));
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this.Store(StorageKind.Output, IoVariable.UserDefined, null, Const(index), Const(0), x);
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this.Store(StorageKind.Output, IoVariable.UserDefined, null, Const(index), Const(1), y);
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this.Store(StorageKind.Output, IoVariable.UserDefined, null, Const(index), Const(2), z);
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this.Store(StorageKind.Output, IoVariable.UserDefined, null, Const(index), Const(3), w);
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}
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if (Config.GpPassthrough && !Config.GpuAccessor.QueryHostSupportsGeometryShaderPassthrough())
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{
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int inputVertices = Config.GpuAccessor.QueryPrimitiveTopology().ToInputVertices();
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for (int primIndex = 0; primIndex < inputVertices; primIndex++)
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{
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WritePositionOutput(primIndex);
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int passthroughAttributes = Config.PassthroughAttributes;
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while (passthroughAttributes != 0)
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{
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int index = BitOperations.TrailingZeroCount(passthroughAttributes);
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WriteUserDefinedOutput(index, primIndex);
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Config.SetOutputUserAttribute(index);
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passthroughAttributes &= ~(1 << index);
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}
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this.EmitVertex();
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}
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this.EndPrimitive();
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}
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}
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else if (Config.Stage == ShaderStage.Fragment)
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{
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GenerateAlphaToCoverageDitherDiscard();
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bool supportsBgra = Config.GpuAccessor.QueryHostSupportsBgraFormat();
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if (Config.OmapDepth)
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{
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Operand src = Register(Config.GetDepthRegister(), RegisterType.Gpr);
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this.Store(StorageKind.Output, IoVariable.FragmentOutputDepth, null, src);
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}
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AlphaTestOp alphaTestOp = Config.GpuAccessor.QueryAlphaTestCompare();
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if (alphaTestOp != AlphaTestOp.Always && (Config.OmapTargets & 8) != 0)
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{
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if (alphaTestOp == AlphaTestOp.Never)
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{
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this.Discard();
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}
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else
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{
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Instruction comparator = alphaTestOp switch
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{
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AlphaTestOp.Equal => Instruction.CompareEqual,
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AlphaTestOp.Greater => Instruction.CompareGreater,
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AlphaTestOp.GreaterOrEqual => Instruction.CompareGreaterOrEqual,
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AlphaTestOp.Less => Instruction.CompareLess,
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AlphaTestOp.LessOrEqual => Instruction.CompareLessOrEqual,
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AlphaTestOp.NotEqual => Instruction.CompareNotEqual,
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_ => 0
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};
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Debug.Assert(comparator != 0, $"Invalid alpha test operation \"{alphaTestOp}\".");
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Operand alpha = Register(3, RegisterType.Gpr);
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Operand alphaRef = ConstF(Config.GpuAccessor.QueryAlphaTestReference());
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Operand alphaPass = Add(Instruction.FP32 | comparator, Local(), alpha, alphaRef);
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Operand alphaPassLabel = Label();
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this.BranchIfTrue(alphaPassLabel, alphaPass);
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this.Discard();
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this.MarkLabel(alphaPassLabel);
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}
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}
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int regIndexBase = 0;
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for (int rtIndex = 0; rtIndex < 8; rtIndex++)
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{
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for (int component = 0; component < 4; component++)
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{
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bool componentEnabled = (Config.OmapTargets & (1 << (rtIndex * 4 + component))) != 0;
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if (!componentEnabled)
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{
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continue;
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}
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Operand src = Register(regIndexBase + component, RegisterType.Gpr);
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// Perform B <-> R swap if needed, for BGRA formats (not supported on OpenGL).
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if (!supportsBgra && (component == 0 || component == 2))
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{
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Operand isBgra = this.Load(StorageKind.Input, IoVariable.FragmentOutputIsBgra, null, Const(rtIndex));
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Operand lblIsBgra = Label();
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Operand lblEnd = Label();
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this.BranchIfTrue(lblIsBgra, isBgra);
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this.Store(StorageKind.Output, IoVariable.FragmentOutputColor, null, Const(rtIndex), Const(component), src);
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this.Branch(lblEnd);
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MarkLabel(lblIsBgra);
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this.Store(StorageKind.Output, IoVariable.FragmentOutputColor, null, Const(rtIndex), Const(2 - component), src);
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MarkLabel(lblEnd);
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}
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else
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{
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this.Store(StorageKind.Output, IoVariable.FragmentOutputColor, null, Const(rtIndex), Const(component), src);
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}
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}
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bool targetEnabled = (Config.OmapTargets & (0xf << (rtIndex * 4))) != 0;
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if (targetEnabled)
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{
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Config.SetOutputUserAttribute(rtIndex);
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regIndexBase += 4;
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}
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}
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}
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}
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private void GenerateAlphaToCoverageDitherDiscard()
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{
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// If the feature is disabled, or alpha is not written, then we're done.
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if (!Config.GpuAccessor.QueryAlphaToCoverageDitherEnable() || (Config.OmapTargets & 8) == 0)
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{
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return;
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}
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// 11 11 11 10 10 10 10 00
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// 11 01 01 01 01 00 00 00
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Operand ditherMask = Const(unchecked((int)0xfbb99110u));
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Operand fragCoordX = this.Load(StorageKind.Input, IoVariable.FragmentCoord, null, Const(0));
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Operand fragCoordY = this.Load(StorageKind.Input, IoVariable.FragmentCoord, null, Const(1));
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Operand x = this.BitwiseAnd(this.FP32ConvertToU32(fragCoordX), Const(1));
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Operand y = this.BitwiseAnd(this.FP32ConvertToU32(fragCoordY), Const(1));
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Operand xy = this.BitwiseOr(x, this.ShiftLeft(y, Const(1)));
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Operand alpha = Register(3, RegisterType.Gpr);
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Operand scaledAlpha = this.FPMultiply(this.FPSaturate(alpha), ConstF(8));
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Operand quantizedAlpha = this.IMinimumU32(this.FP32ConvertToU32(scaledAlpha), Const(7));
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Operand shift = this.BitwiseOr(this.ShiftLeft(quantizedAlpha, Const(2)), xy);
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Operand opaque = this.BitwiseAnd(this.ShiftRightU32(ditherMask, shift), Const(1));
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Operand a2cDitherEndLabel = Label();
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this.BranchIfTrue(a2cDitherEndLabel, opaque);
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this.Discard();
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this.MarkLabel(a2cDitherEndLabel);
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}
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public Operation[] GetOperations()
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{
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return _operations.ToArray();
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}
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}
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} |