Ryujinx-git/Ryujinx.Graphics.Shader/Translation/ShaderConfig.cs

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C#
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using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Numerics;
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namespace Ryujinx.Graphics.Shader.Translation
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{
class ShaderConfig
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{
// TODO: Non-hardcoded array size.
public const int SamplerArraySize = 4;
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public ShaderStage Stage { get; }
public bool GpPassthrough { get; }
public OutputTopology OutputTopology { get; }
public int MaxOutputVertices { get; }
public int LocalMemorySize { get; }
public ImapPixelType[] ImapTypes { get; }
public OmapTarget[] OmapTargets { get; }
public bool OmapSampleMask { get; }
public bool OmapDepth { get; }
public IGpuAccessor GpuAccessor { get; }
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public TranslationFlags Flags { get; }
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public int Size { get; private set; }
public byte ClipDistancesWritten { get; private set; }
public FeatureFlags UsedFeatures { get; private set; }
public HashSet<int> TextureHandlesForCache { get; }
private readonly TranslationCounts _counts;
private int _usedConstantBuffers;
private int _usedStorageBuffers;
private int _usedStorageBuffersWrite;
private struct TextureInfo : IEquatable<TextureInfo>
{
public int CbufSlot { get; }
public int Handle { get; }
public bool Indexed { get; }
public TextureFormat Format { get; }
public TextureInfo(int cbufSlot, int handle, bool indexed, TextureFormat format)
{
CbufSlot = cbufSlot;
Handle = handle;
Indexed = indexed;
Format = format;
}
public override bool Equals(object obj)
{
return obj is TextureInfo other && Equals(other);
}
public bool Equals(TextureInfo other)
{
return CbufSlot == other.CbufSlot && Handle == other.Handle && Indexed == other.Indexed && Format == other.Format;
}
public override int GetHashCode()
{
return HashCode.Combine(CbufSlot, Handle, Indexed, Format);
}
}
private struct TextureMeta
{
public bool AccurateType;
public SamplerType Type;
public TextureUsageFlags UsageFlags;
}
private readonly Dictionary<TextureInfo, TextureMeta> _usedTextures;
private readonly Dictionary<TextureInfo, TextureMeta> _usedImages;
private BufferDescriptor[] _cachedConstantBufferDescriptors;
private BufferDescriptor[] _cachedStorageBufferDescriptors;
private TextureDescriptor[] _cachedTextureDescriptors;
private TextureDescriptor[] _cachedImageDescriptors;
public int FirstConstantBufferBinding { get; private set; }
public int FirstStorageBufferBinding { get; private set; }
public ShaderConfig(IGpuAccessor gpuAccessor, TranslationFlags flags, TranslationCounts counts)
{
Stage = ShaderStage.Compute;
GpuAccessor = gpuAccessor;
Flags = flags;
_counts = counts;
TextureHandlesForCache = new HashSet<int>();
_usedTextures = new Dictionary<TextureInfo, TextureMeta>();
_usedImages = new Dictionary<TextureInfo, TextureMeta>();
}
public ShaderConfig(ShaderHeader header, IGpuAccessor gpuAccessor, TranslationFlags flags, TranslationCounts counts) : this(gpuAccessor, flags, counts)
{
Stage = header.Stage;
GpPassthrough = header.Stage == ShaderStage.Geometry && header.GpPassthrough;
OutputTopology = header.OutputTopology;
MaxOutputVertices = header.MaxOutputVertexCount;
LocalMemorySize = header.ShaderLocalMemoryLowSize + header.ShaderLocalMemoryHighSize;
ImapTypes = header.ImapTypes;
OmapTargets = header.OmapTargets;
OmapSampleMask = header.OmapSampleMask;
OmapDepth = header.OmapDepth;
}
public int GetDepthRegister()
{
int count = 0;
for (int index = 0; index < OmapTargets.Length; index++)
{
for (int component = 0; component < 4; component++)
{
if (OmapTargets[index].ComponentEnabled(component))
{
count++;
}
}
}
// The depth register is always two registers after the last color output.
return count + 1;
}
public TextureFormat GetTextureFormat(int handle, int cbufSlot = -1)
{
// When the formatted load extension is supported, we don't need to
// specify a format, we can just declare it without a format and the GPU will handle it.
if (GpuAccessor.QuerySupportsImageLoadFormatted())
{
return TextureFormat.Unknown;
}
var format = GpuAccessor.QueryTextureFormat(handle, cbufSlot);
if (format == TextureFormat.Unknown)
{
GpuAccessor.Log($"Unknown format for texture {handle}.");
format = TextureFormat.R8G8B8A8Unorm;
}
return format;
}
public void SizeAdd(int size)
{
Size += size;
}
public void InheritFrom(ShaderConfig other)
{
ClipDistancesWritten |= other.ClipDistancesWritten;
UsedFeatures |= other.UsedFeatures;
TextureHandlesForCache.UnionWith(other.TextureHandlesForCache);
_usedConstantBuffers |= other._usedConstantBuffers;
_usedStorageBuffers |= other._usedStorageBuffers;
_usedStorageBuffersWrite |= other._usedStorageBuffersWrite;
foreach (var kv in other._usedTextures)
{
if (!_usedTextures.TryAdd(kv.Key, kv.Value))
{
_usedTextures[kv.Key] = MergeTextureMeta(kv.Value, _usedTextures[kv.Key]);
}
}
foreach (var kv in other._usedImages)
{
if (!_usedImages.TryAdd(kv.Key, kv.Value))
{
_usedImages[kv.Key] = MergeTextureMeta(kv.Value, _usedImages[kv.Key]);
}
}
}
public void SetClipDistanceWritten(int index)
{
ClipDistancesWritten |= (byte)(1 << index);
}
public void SetUsedFeature(FeatureFlags flags)
{
UsedFeatures |= flags;
}
public Operand CreateCbuf(int slot, int offset)
{
SetUsedConstantBuffer(slot);
return OperandHelper.Cbuf(slot, offset);
}
public void SetUsedConstantBuffer(int slot)
{
_usedConstantBuffers |= 1 << slot;
}
public void SetUsedStorageBuffer(int slot, bool write)
{
int mask = 1 << slot;
_usedStorageBuffers |= mask;
if (write)
{
_usedStorageBuffersWrite |= mask;
}
}
public void SetUsedTexture(
Instruction inst,
SamplerType type,
TextureFormat format,
TextureFlags flags,
int cbufSlot,
int handle)
{
inst &= Instruction.Mask;
bool isImage = inst == Instruction.ImageLoad || inst == Instruction.ImageStore;
bool isWrite = inst == Instruction.ImageStore;
bool accurateType = inst != Instruction.TextureSize && inst != Instruction.Lod;
if (isImage)
{
SetUsedTextureOrImage(_usedImages, cbufSlot, handle, type, format, true, isWrite, false);
}
else
{
SetUsedTextureOrImage(_usedTextures, cbufSlot, handle, type, TextureFormat.Unknown, flags.HasFlag(TextureFlags.IntCoords), false, accurateType);
}
}
private void SetUsedTextureOrImage(
Dictionary<TextureInfo, TextureMeta> dict,
int cbufSlot,
int handle,
SamplerType type,
TextureFormat format,
bool intCoords,
bool write,
bool accurateType)
{
var dimensions = type.GetDimensions();
var isIndexed = type.HasFlag(SamplerType.Indexed);
var usageFlags = TextureUsageFlags.None;
if (intCoords)
{
usageFlags |= TextureUsageFlags.NeedsScaleValue;
var canScale = (Stage == ShaderStage.Fragment || Stage == ShaderStage.Compute) && !isIndexed && !write && dimensions == 2;
if (!canScale)
{
// Resolution scaling cannot be applied to this texture right now.
// Flag so that we know to blacklist scaling on related textures when binding them.
usageFlags |= TextureUsageFlags.ResScaleUnsupported;
}
}
if (write)
{
usageFlags |= TextureUsageFlags.ImageStore;
}
int arraySize = isIndexed ? SamplerArraySize : 1;
for (int layer = 0; layer < arraySize; layer++)
{
var info = new TextureInfo(cbufSlot, handle + layer * 2, isIndexed, format);
var meta = new TextureMeta()
{
AccurateType = accurateType,
Type = type,
UsageFlags = usageFlags
};
if (dict.TryGetValue(info, out var existingMeta))
{
dict[info] = MergeTextureMeta(meta, existingMeta);
}
else
{
dict.Add(info, meta);
}
}
}
private static TextureMeta MergeTextureMeta(TextureMeta meta, TextureMeta existingMeta)
{
meta.UsageFlags |= existingMeta.UsageFlags;
// If the texture we have has inaccurate type information, then
// we prefer the most accurate one.
if (existingMeta.AccurateType)
{
meta.AccurateType = true;
meta.Type = existingMeta.Type;
}
return meta;
}
public BufferDescriptor[] GetConstantBufferDescriptors()
{
if (_cachedConstantBufferDescriptors != null)
{
return _cachedConstantBufferDescriptors;
}
int usedMask = _usedConstantBuffers;
if (UsedFeatures.HasFlag(FeatureFlags.CbIndexing))
{
usedMask |= (int)GpuAccessor.QueryConstantBufferUse();
}
FirstConstantBufferBinding = _counts.UniformBuffersCount;
return _cachedConstantBufferDescriptors = GetBufferDescriptors(
usedMask,
0,
UsedFeatures.HasFlag(FeatureFlags.CbIndexing),
_counts.IncrementUniformBuffersCount);
}
public BufferDescriptor[] GetStorageBufferDescriptors()
{
if (_cachedStorageBufferDescriptors != null)
{
return _cachedStorageBufferDescriptors;
}
FirstStorageBufferBinding = _counts.StorageBuffersCount;
return _cachedStorageBufferDescriptors = GetBufferDescriptors(
_usedStorageBuffers,
_usedStorageBuffersWrite,
true,
_counts.IncrementStorageBuffersCount);
}
private static BufferDescriptor[] GetBufferDescriptors(
int usedMask,
int writtenMask,
bool isArray,
Func<int> getBindingCallback)
{
var descriptors = new BufferDescriptor[BitOperations.PopCount((uint)usedMask)];
int lastSlot = -1;
for (int i = 0; i < descriptors.Length; i++)
{
int slot = BitOperations.TrailingZeroCount(usedMask);
if (isArray)
{
// The next array entries also consumes bindings, even if they are unused.
for (int j = lastSlot + 1; j < slot; j++)
{
getBindingCallback();
}
}
lastSlot = slot;
descriptors[i] = new BufferDescriptor(getBindingCallback(), slot);
if ((writtenMask & (1 << slot)) != 0)
{
descriptors[i].SetFlag(BufferUsageFlags.Write);
}
usedMask &= ~(1 << slot);
}
return descriptors;
}
public TextureDescriptor[] GetTextureDescriptors()
{
return _cachedTextureDescriptors ??= GetTextureOrImageDescriptors(_usedTextures, _counts.IncrementTexturesCount);
}
public TextureDescriptor[] GetImageDescriptors()
{
return _cachedImageDescriptors ??= GetTextureOrImageDescriptors(_usedImages, _counts.IncrementImagesCount);
}
private static TextureDescriptor[] GetTextureOrImageDescriptors(Dictionary<TextureInfo, TextureMeta> dict, Func<int> getBindingCallback)
{
var descriptors = new TextureDescriptor[dict.Count];
int i = 0;
foreach (var kv in dict.OrderBy(x => x.Key.Indexed).OrderBy(x => x.Key.Handle))
{
var info = kv.Key;
var meta = kv.Value;
int binding = getBindingCallback();
descriptors[i] = new TextureDescriptor(binding, meta.Type, info.Format, info.CbufSlot, info.Handle);
descriptors[i].SetFlag(meta.UsageFlags);
i++;
}
return descriptors;
}
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}
}