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Add support for BC1/2/3 decompression (for 3D textures) (#2987)

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* Add support for BC1/2/3 decompression (for 3D textures)

* Optimize and clean up

* Unsafe not needed here

* Fix alpha value interpolation when a0 <= a1
This commit is contained in:
gdkchan 2022-01-22 15:23:00 -03:00 committed by GitHub
parent 8117f6a979
commit 42c75dbb8f
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
8 changed files with 720 additions and 143 deletions
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37
Ryujinx.Graphics.GAL/Capabilities.cs
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@ -2,30 +2,32 @@ namespace Ryujinx.Graphics.GAL
{ {
public struct Capabilities public struct Capabilities
{ {
public bool HasFrontFacingBug { get; } public readonly bool HasFrontFacingBug;
public bool HasVectorIndexingBug { get; } public readonly bool HasVectorIndexingBug;
public bool SupportsAstcCompression { get; } public readonly bool SupportsAstcCompression;
public bool SupportsBgraFormat { get; } public readonly bool Supports3DTextureCompression;
public bool SupportsR4G4Format { get; } public readonly bool SupportsBgraFormat;
public bool SupportsFragmentShaderInterlock { get; } public readonly bool SupportsR4G4Format;
public bool SupportsFragmentShaderOrderingIntel { get; } public readonly bool SupportsFragmentShaderInterlock;
public bool SupportsImageLoadFormatted { get; } public readonly bool SupportsFragmentShaderOrderingIntel;
public bool SupportsMismatchingViewFormat { get; } public readonly bool SupportsImageLoadFormatted;
public bool SupportsNonConstantTextureOffset { get; } public readonly bool SupportsMismatchingViewFormat;
public bool SupportsShaderBallot { get; } public readonly bool SupportsNonConstantTextureOffset;
public bool SupportsTextureShadowLod { get; } public readonly bool SupportsShaderBallot;
public bool SupportsViewportSwizzle { get; } public readonly bool SupportsTextureShadowLod;
public bool SupportsIndirectParameters { get; } public readonly bool SupportsViewportSwizzle;
public readonly bool SupportsIndirectParameters;
public int MaximumComputeSharedMemorySize { get; } public readonly int MaximumComputeSharedMemorySize;
public float MaximumSupportedAnisotropy { get; } public readonly float MaximumSupportedAnisotropy;
public int StorageBufferOffsetAlignment { get; } public readonly int StorageBufferOffsetAlignment;
public Capabilities( public Capabilities(
bool hasFrontFacingBug, bool hasFrontFacingBug,
bool hasVectorIndexingBug, bool hasVectorIndexingBug,
bool supportsAstcCompression, bool supportsAstcCompression,
bool supports3DTextureCompression,
bool supportsBgraFormat, bool supportsBgraFormat,
bool supportsR4G4Format, bool supportsR4G4Format,
bool supportsFragmentShaderInterlock, bool supportsFragmentShaderInterlock,
@ -44,6 +46,7 @@ namespace Ryujinx.Graphics.GAL
HasFrontFacingBug = hasFrontFacingBug; HasFrontFacingBug = hasFrontFacingBug;
HasVectorIndexingBug = hasVectorIndexingBug; HasVectorIndexingBug = hasVectorIndexingBug;
SupportsAstcCompression = supportsAstcCompression; SupportsAstcCompression = supportsAstcCompression;
Supports3DTextureCompression = supports3DTextureCompression;
SupportsBgraFormat = supportsBgraFormat; SupportsBgraFormat = supportsBgraFormat;
SupportsR4G4Format = supportsR4G4Format; SupportsR4G4Format = supportsR4G4Format;
SupportsFragmentShaderInterlock = supportsFragmentShaderInterlock; SupportsFragmentShaderInterlock = supportsFragmentShaderInterlock;

22
Ryujinx.Graphics.GAL/Format.cs
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@ -67,11 +67,9 @@ namespace Ryujinx.Graphics.GAL
R10G10B10A2Uint, R10G10B10A2Uint,
R11G11B10Float, R11G11B10Float,
R9G9B9E5Float, R9G9B9E5Float,
Bc1RgbUnorm,
Bc1RgbaUnorm, Bc1RgbaUnorm,
Bc2Unorm, Bc2Unorm,
Bc3Unorm, Bc3Unorm,
Bc1RgbSrgb,
Bc1RgbaSrgb, Bc1RgbaSrgb,
Bc2Srgb, Bc2Srgb,
Bc3Srgb, Bc3Srgb,
@ -349,25 +347,5 @@ namespace Ryujinx.Graphics.GAL
{ {
return format.IsUint() || format.IsSint(); return format.IsUint() || format.IsSint();
} }
/// <summary>
/// Checks if the texture format is a BC4 compressed format.
/// </summary>
/// <param name="format">Texture format</param>
/// <returns>True if the texture format is a BC4 compressed format, false otherwise</returns>
public static bool IsBc4(this Format format)
{
return format == Format.Bc4Unorm || format == Format.Bc4Snorm;
}
/// <summary>
/// Checks if the texture format is a BC5 compressed format.
/// </summary>
/// <param name="format">Texture format</param>
/// <returns>True if the texture format is a BC5 compressed format, false otherwise</returns>
public static bool IsBc5(this Format format)
{
return format == Format.Bc5Unorm || format == Format.Bc5Snorm;
}
} }
} }

19
Ryujinx.Graphics.Gpu/GpuContext.cs
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@ -78,14 +78,27 @@ namespace Ryujinx.Graphics.Gpu
/// <summary> /// <summary>
/// Host hardware capabilities. /// Host hardware capabilities.
/// </summary> /// </summary>
internal Capabilities Capabilities => _caps.Value; internal ref Capabilities Capabilities
{
get
{
if (!_capsLoaded)
{
_caps = Renderer.GetCapabilities();
_capsLoaded = true;
}
return ref _caps;
}
}
/// <summary> /// <summary>
/// Event for signalling shader cache loading progress. /// Event for signalling shader cache loading progress.
/// </summary> /// </summary>
public event Action<ShaderCacheState, int, int> ShaderCacheStateChanged; public event Action<ShaderCacheState, int, int> ShaderCacheStateChanged;
private readonly Lazy<Capabilities> _caps; private bool _capsLoaded;
private Capabilities _caps;
private Thread _gpuThread; private Thread _gpuThread;
/// <summary> /// <summary>
@ -110,8 +123,6 @@ namespace Ryujinx.Graphics.Gpu
DeferredActions = new Queue<Action>(); DeferredActions = new Queue<Action>();
PhysicalMemoryRegistry = new ConcurrentDictionary<long, PhysicalMemory>(); PhysicalMemoryRegistry = new ConcurrentDictionary<long, PhysicalMemory>();
_caps = new Lazy<Capabilities>(Renderer.GetCapabilities);
} }
/// <summary> /// <summary>

30
Ryujinx.Graphics.Gpu/Image/Texture.cs
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@ -834,13 +834,31 @@ namespace Ryujinx.Graphics.Gpu.Image
{ {
data = PixelConverter.ConvertR4G4ToR4G4B4A4(data); data = PixelConverter.ConvertR4G4ToR4G4B4A4(data);
} }
else if (Target == Target.Texture3D && Format.IsBc4()) else if (!_context.Capabilities.Supports3DTextureCompression && Target == Target.Texture3D)
{ {
data = BCnDecoder.DecodeBC4(data, width, height, depth, levels, layers, Info.FormatInfo.Format == Format.Bc4Snorm); switch (Format)
} {
else if (Target == Target.Texture3D && Format.IsBc5()) case Format.Bc1RgbaSrgb:
{ case Format.Bc1RgbaUnorm:
data = BCnDecoder.DecodeBC5(data, width, height, depth, levels, layers, Info.FormatInfo.Format == Format.Bc5Snorm); data = BCnDecoder.DecodeBC1(data, width, height, depth, levels, layers);
break;
case Format.Bc2Srgb:
case Format.Bc2Unorm:
data = BCnDecoder.DecodeBC2(data, width, height, depth, levels, layers);
break;
case Format.Bc3Srgb:
case Format.Bc3Unorm:
data = BCnDecoder.DecodeBC3(data, width, height, depth, levels, layers);
break;
case Format.Bc4Snorm:
case Format.Bc4Unorm:
data = BCnDecoder.DecodeBC4(data, width, height, depth, levels, layers, Format == Format.Bc4Snorm);
break;
case Format.Bc5Snorm:
case Format.Bc5Unorm:
data = BCnDecoder.DecodeBC5(data, width, height, depth, levels, layers, Format == Format.Bc5Snorm);
break;
}
} }
return data; return data;

18
Ryujinx.Graphics.Gpu/Image/TextureCompatibility.cs
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@ -14,9 +14,6 @@ namespace Ryujinx.Graphics.Gpu.Image
private enum FormatClass private enum FormatClass
{ {
Unclassified, Unclassified,
BCn64,
BCn128,
Bc1Rgb,
Bc1Rgba, Bc1Rgba,
Bc2, Bc2,
Bc3, Bc3,
@ -88,13 +85,21 @@ namespace Ryujinx.Graphics.Gpu.Image
return new FormatInfo(Format.R4G4B4A4Unorm, 1, 1, 2, 4); return new FormatInfo(Format.R4G4B4A4Unorm, 1, 1, 2, 4);
} }
if (info.Target == Target.Texture3D) if (!caps.Supports3DTextureCompression && info.Target == Target.Texture3D)
{ {
// The host API does not support 3D BC4/BC5 compressed formats. // The host API does not support 3D compressed formats.
// We assume software decompression will be done for those textures, // We assume software decompression will be done for those textures,
// and so we adjust the format here to match the decompressor output. // and so we adjust the format here to match the decompressor output.
switch (info.FormatInfo.Format) switch (info.FormatInfo.Format)
{ {
case Format.Bc1RgbaSrgb:
case Format.Bc2Srgb:
case Format.Bc3Srgb:
return new FormatInfo(Format.R8G8B8A8Srgb, 1, 1, 4, 4);
case Format.Bc1RgbaUnorm:
case Format.Bc2Unorm:
case Format.Bc3Unorm:
return new FormatInfo(Format.R8G8B8A8Unorm, 1, 1, 4, 4);
case Format.Bc4Unorm: case Format.Bc4Unorm:
return new FormatInfo(Format.R8Unorm, 1, 1, 1, 1); return new FormatInfo(Format.R8Unorm, 1, 1, 1, 1);
case Format.Bc4Snorm: case Format.Bc4Snorm:
@ -749,9 +754,6 @@ namespace Ryujinx.Graphics.Gpu.Image
{ {
switch (format) switch (format)
{ {
case Format.Bc1RgbSrgb:
case Format.Bc1RgbUnorm:
return FormatClass.Bc1Rgb;
case Format.Bc1RgbaSrgb: case Format.Bc1RgbaSrgb:
case Format.Bc1RgbaUnorm: case Format.Bc1RgbaUnorm:
return FormatClass.Bc1Rgba; return FormatClass.Bc1Rgba;

2
Ryujinx.Graphics.OpenGL/FormatTable.cs
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@ -80,11 +80,9 @@ namespace Ryujinx.Graphics.OpenGL
Add(Format.R10G10B10A2Uint, new FormatInfo(4, false, false, All.Rgb10A2ui, PixelFormat.RgbaInteger, PixelType.UnsignedInt2101010Reversed)); Add(Format.R10G10B10A2Uint, new FormatInfo(4, false, false, All.Rgb10A2ui, PixelFormat.RgbaInteger, PixelType.UnsignedInt2101010Reversed));
Add(Format.R11G11B10Float, new FormatInfo(3, false, false, All.R11fG11fB10f, PixelFormat.Rgb, PixelType.UnsignedInt10F11F11FRev)); Add(Format.R11G11B10Float, new FormatInfo(3, false, false, All.R11fG11fB10f, PixelFormat.Rgb, PixelType.UnsignedInt10F11F11FRev));
Add(Format.R9G9B9E5Float, new FormatInfo(3, false, false, All.Rgb9E5, PixelFormat.Rgb, PixelType.UnsignedInt5999Rev)); Add(Format.R9G9B9E5Float, new FormatInfo(3, false, false, All.Rgb9E5, PixelFormat.Rgb, PixelType.UnsignedInt5999Rev));
Add(Format.Bc1RgbUnorm, new FormatInfo(3, true, false, All.CompressedRgbS3tcDxt1Ext));
Add(Format.Bc1RgbaUnorm, new FormatInfo(4, true, false, All.CompressedRgbaS3tcDxt1Ext)); Add(Format.Bc1RgbaUnorm, new FormatInfo(4, true, false, All.CompressedRgbaS3tcDxt1Ext));
Add(Format.Bc2Unorm, new FormatInfo(4, true, false, All.CompressedRgbaS3tcDxt3Ext)); Add(Format.Bc2Unorm, new FormatInfo(4, true, false, All.CompressedRgbaS3tcDxt3Ext));
Add(Format.Bc3Unorm, new FormatInfo(4, true, false, All.CompressedRgbaS3tcDxt5Ext)); Add(Format.Bc3Unorm, new FormatInfo(4, true, false, All.CompressedRgbaS3tcDxt5Ext));
Add(Format.Bc1RgbSrgb, new FormatInfo(3, false, false, All.CompressedSrgbS3tcDxt1Ext));
Add(Format.Bc1RgbaSrgb, new FormatInfo(4, true, false, All.CompressedSrgbAlphaS3tcDxt1Ext)); Add(Format.Bc1RgbaSrgb, new FormatInfo(4, true, false, All.CompressedSrgbAlphaS3tcDxt1Ext));
Add(Format.Bc2Srgb, new FormatInfo(4, false, false, All.CompressedSrgbAlphaS3tcDxt3Ext)); Add(Format.Bc2Srgb, new FormatInfo(4, false, false, All.CompressedSrgbAlphaS3tcDxt3Ext));
Add(Format.Bc3Srgb, new FormatInfo(4, false, false, All.CompressedSrgbAlphaS3tcDxt5Ext)); Add(Format.Bc3Srgb, new FormatInfo(4, false, false, All.CompressedSrgbAlphaS3tcDxt5Ext));

1
Ryujinx.Graphics.OpenGL/Renderer.cs
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@ -104,6 +104,7 @@ namespace Ryujinx.Graphics.OpenGL
hasFrontFacingBug: HwCapabilities.Vendor == HwCapabilities.GpuVendor.IntelWindows, hasFrontFacingBug: HwCapabilities.Vendor == HwCapabilities.GpuVendor.IntelWindows,
hasVectorIndexingBug: HwCapabilities.Vendor == HwCapabilities.GpuVendor.AmdWindows, hasVectorIndexingBug: HwCapabilities.Vendor == HwCapabilities.GpuVendor.AmdWindows,
supportsAstcCompression: HwCapabilities.SupportsAstcCompression, supportsAstcCompression: HwCapabilities.SupportsAstcCompression,
supports3DTextureCompression: false,
supportsBgraFormat: false, supportsBgraFormat: false,
supportsR4G4Format: false, supportsR4G4Format: false,
supportsFragmentShaderInterlock: HwCapabilities.SupportsFragmentShaderInterlock, supportsFragmentShaderInterlock: HwCapabilities.SupportsFragmentShaderInterlock,

734
Ryujinx.Graphics.Texture/BCnDecoder.cs
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@ -1,7 +1,9 @@
using Ryujinx.Common; using Ryujinx.Common;
using System; using System;
using System.Runtime.CompilerServices; using System.Buffers.Binary;
using System.Runtime.InteropServices; using System.Runtime.InteropServices;
using System.Runtime.Intrinsics;
using System.Runtime.Intrinsics.X86;
namespace Ryujinx.Graphics.Texture namespace Ryujinx.Graphics.Texture
{ {
@ -10,22 +12,30 @@ namespace Ryujinx.Graphics.Texture
private const int BlockWidth = 4; private const int BlockWidth = 4;
private const int BlockHeight = 4; private const int BlockHeight = 4;
public static byte[] DecodeBC4(ReadOnlySpan<byte> data, int width, int height, int depth, int levels, int layers, bool signed) public static byte[] DecodeBC1(ReadOnlySpan<byte> data, int width, int height, int depth, int levels, int layers)
{ {
int size = 0; int size = 0;
for (int l = 0; l < levels; l++) for (int l = 0; l < levels; l++)
{ {
size += Math.Max(1, width >> l) * Math.Max(1, height >> l) * Math.Max(1, depth >> l) * layers; size += Math.Max(1, width >> l) * Math.Max(1, height >> l) * Math.Max(1, depth >> l) * layers * 4;
} }
byte[] output = new byte[size]; byte[] output = new byte[size];
ReadOnlySpan<ulong> data64 = MemoryMarshal.Cast<byte, ulong>(data); Span<byte> tile = stackalloc byte[BlockWidth * BlockHeight * 4];
Span<byte> rPal = stackalloc byte[8]; Span<uint> tileAsUint = MemoryMarshal.Cast<byte, uint>(tile);
Span<uint> outputAsUint = MemoryMarshal.Cast<byte, uint>(output);
int baseOOffs = 0; Span<Vector128<byte>> tileAsVector128 = MemoryMarshal.Cast<byte, Vector128<byte>>(tile);
Span<Vector128<byte>> outputLine0 = default;
Span<Vector128<byte>> outputLine1 = default;
Span<Vector128<byte>> outputLine2 = default;
Span<Vector128<byte>> outputLine3 = default;
int imageBaseOOffs = 0;
for (int l = 0; l < levels; l++) for (int l = 0; l < levels; l++)
{ {
@ -39,11 +49,302 @@ namespace Ryujinx.Graphics.Texture
for (int y = 0; y < h; y++) for (int y = 0; y < h; y++)
{ {
int baseY = y * BlockHeight; int baseY = y * BlockHeight;
int copyHeight = Math.Min(BlockHeight, height - baseY);
int lineBaseOOffs = imageBaseOOffs + baseY * width;
if (copyHeight == 4)
{
outputLine0 = MemoryMarshal.Cast<uint, Vector128<byte>>(outputAsUint.Slice(lineBaseOOffs));
outputLine1 = MemoryMarshal.Cast<uint, Vector128<byte>>(outputAsUint.Slice(lineBaseOOffs + width));
outputLine2 = MemoryMarshal.Cast<uint, Vector128<byte>>(outputAsUint.Slice(lineBaseOOffs + width * 2));
outputLine3 = MemoryMarshal.Cast<uint, Vector128<byte>>(outputAsUint.Slice(lineBaseOOffs + width * 3));
}
for (int x = 0; x < w; x++) for (int x = 0; x < w; x++)
{ {
int baseX = x * BlockWidth; int baseX = x * BlockWidth;
int lineBaseOOffs = baseOOffs + baseX; int copyWidth = Math.Min(BlockWidth, width - baseX);
BC1DecodeTileRgb(tile, data);
if ((copyWidth | copyHeight) == 4)
{
outputLine0[x] = tileAsVector128[0];
outputLine1[x] = tileAsVector128[1];
outputLine2[x] = tileAsVector128[2];
outputLine3[x] = tileAsVector128[3];
}
else
{
int pixelBaseOOffs = lineBaseOOffs + baseX;
for (int tY = 0; tY < copyHeight; tY++)
{
tileAsUint.Slice(tY * 4, copyWidth).CopyTo(outputAsUint.Slice(pixelBaseOOffs + width * tY, copyWidth));
}
}
data = data.Slice(8);
}
}
imageBaseOOffs += width * height;
}
}
width = Math.Max(1, width >> 1);
height = Math.Max(1, height >> 1);
depth = Math.Max(1, depth >> 1);
}
return output;
}
public static byte[] DecodeBC2(ReadOnlySpan<byte> data, int width, int height, int depth, int levels, int layers)
{
int size = 0;
for (int l = 0; l < levels; l++)
{
size += Math.Max(1, width >> l) * Math.Max(1, height >> l) * Math.Max(1, depth >> l) * layers * 4;
}
byte[] output = new byte[size];
Span<byte> tile = stackalloc byte[BlockWidth * BlockHeight * 4];
Span<uint> tileAsUint = MemoryMarshal.Cast<byte, uint>(tile);
Span<uint> outputAsUint = MemoryMarshal.Cast<byte, uint>(output);
Span<Vector128<byte>> tileAsVector128 = MemoryMarshal.Cast<byte, Vector128<byte>>(tile);
Span<Vector128<byte>> outputLine0 = default;
Span<Vector128<byte>> outputLine1 = default;
Span<Vector128<byte>> outputLine2 = default;
Span<Vector128<byte>> outputLine3 = default;
int imageBaseOOffs = 0;
for (int l = 0; l < levels; l++)
{
int w = BitUtils.DivRoundUp(width, BlockWidth);
int h = BitUtils.DivRoundUp(height, BlockHeight);
for (int l2 = 0; l2 < layers; l2++)
{
for (int z = 0; z < depth; z++)
{
for (int y = 0; y < h; y++)
{
int baseY = y * BlockHeight;
int copyHeight = Math.Min(BlockHeight, height - baseY);
int lineBaseOOffs = imageBaseOOffs + baseY * width;
if (copyHeight == 4)
{
outputLine0 = MemoryMarshal.Cast<uint, Vector128<byte>>(outputAsUint.Slice(lineBaseOOffs));
outputLine1 = MemoryMarshal.Cast<uint, Vector128<byte>>(outputAsUint.Slice(lineBaseOOffs + width));
outputLine2 = MemoryMarshal.Cast<uint, Vector128<byte>>(outputAsUint.Slice(lineBaseOOffs + width * 2));
outputLine3 = MemoryMarshal.Cast<uint, Vector128<byte>>(outputAsUint.Slice(lineBaseOOffs + width * 3));
}
for (int x = 0; x < w; x++)
{
int baseX = x * BlockWidth;
int copyWidth = Math.Min(BlockWidth, width - baseX);
BC23DecodeTileRgb(tile, data.Slice(8));
ulong block = BinaryPrimitives.ReadUInt64LittleEndian(data);
for (int i = 3; i < BlockWidth * BlockHeight * 4; i += 4, block >>= 4)
{
tile[i] = (byte)((block & 0xf) | (block << 4));
}
if ((copyWidth | copyHeight) == 4)
{
outputLine0[x] = tileAsVector128[0];
outputLine1[x] = tileAsVector128[1];
outputLine2[x] = tileAsVector128[2];
outputLine3[x] = tileAsVector128[3];
}
else
{
int pixelBaseOOffs = lineBaseOOffs + baseX;
for (int tY = 0; tY < copyHeight; tY++)
{
tileAsUint.Slice(tY * 4, copyWidth).CopyTo(outputAsUint.Slice(pixelBaseOOffs + width * tY, copyWidth));
}
}
data = data.Slice(16);
}
}
imageBaseOOffs += width * height;
}
}
width = Math.Max(1, width >> 1);
height = Math.Max(1, height >> 1);
depth = Math.Max(1, depth >> 1);
}
return output;
}
public static byte[] DecodeBC3(ReadOnlySpan<byte> data, int width, int height, int depth, int levels, int layers)
{
int size = 0;
for (int l = 0; l < levels; l++)
{
size += Math.Max(1, width >> l) * Math.Max(1, height >> l) * Math.Max(1, depth >> l) * layers * 4;
}
byte[] output = new byte[size];
Span<byte> tile = stackalloc byte[BlockWidth * BlockHeight * 4];
Span<byte> rPal = stackalloc byte[8];
Span<uint> tileAsUint = MemoryMarshal.Cast<byte, uint>(tile);
Span<uint> outputAsUint = MemoryMarshal.Cast<byte, uint>(output);
Span<Vector128<byte>> tileAsVector128 = MemoryMarshal.Cast<byte, Vector128<byte>>(tile);
Span<Vector128<byte>> outputLine0 = default;
Span<Vector128<byte>> outputLine1 = default;
Span<Vector128<byte>> outputLine2 = default;
Span<Vector128<byte>> outputLine3 = default;
int imageBaseOOffs = 0;
for (int l = 0; l < levels; l++)
{
int w = BitUtils.DivRoundUp(width, BlockWidth);
int h = BitUtils.DivRoundUp(height, BlockHeight);
for (int l2 = 0; l2 < layers; l2++)
{
for (int z = 0; z < depth; z++)
{
for (int y = 0; y < h; y++)
{
int baseY = y * BlockHeight;
int copyHeight = Math.Min(BlockHeight, height - baseY);
int lineBaseOOffs = imageBaseOOffs + baseY * width;
if (copyHeight == 4)
{
outputLine0 = MemoryMarshal.Cast<uint, Vector128<byte>>(outputAsUint.Slice(lineBaseOOffs));
outputLine1 = MemoryMarshal.Cast<uint, Vector128<byte>>(outputAsUint.Slice(lineBaseOOffs + width));
outputLine2 = MemoryMarshal.Cast<uint, Vector128<byte>>(outputAsUint.Slice(lineBaseOOffs + width * 2));
outputLine3 = MemoryMarshal.Cast<uint, Vector128<byte>>(outputAsUint.Slice(lineBaseOOffs + width * 3));
}
for (int x = 0; x < w; x++)
{
int baseX = x * BlockWidth;
int copyWidth = Math.Min(BlockWidth, width - baseX);
BC23DecodeTileRgb(tile, data.Slice(8));
ulong block = BinaryPrimitives.ReadUInt64LittleEndian(data);
rPal[0] = (byte)block;
rPal[1] = (byte)(block >> 8);
BCnLerpAlphaUnorm(rPal);
BCnDecodeTileAlphaRgba(tile, rPal, block >> 16);
if ((copyWidth | copyHeight) == 4)
{
outputLine0[x] = tileAsVector128[0];
outputLine1[x] = tileAsVector128[1];
outputLine2[x] = tileAsVector128[2];
outputLine3[x] = tileAsVector128[3];
}
else
{
int pixelBaseOOffs = lineBaseOOffs + baseX;
for (int tY = 0; tY < copyHeight; tY++)
{
tileAsUint.Slice(tY * 4, copyWidth).CopyTo(outputAsUint.Slice(pixelBaseOOffs + width * tY, copyWidth));
}
}
data = data.Slice(16);
}
}
imageBaseOOffs += width * height;
}
}
width = Math.Max(1, width >> 1);
height = Math.Max(1, height >> 1);
depth = Math.Max(1, depth >> 1);
}
return output;
}
public static byte[] DecodeBC4(ReadOnlySpan<byte> data, int width, int height, int depth, int levels, int layers, bool signed)
{
int size = 0;
for (int l = 0; l < levels; l++)
{
size += Math.Max(1, width >> l) * Math.Max(1, height >> l) * Math.Max(1, depth >> l) * layers;
}
byte[] output = new byte[size];
Span<byte> outputSpan = new Span<byte>(output);
ReadOnlySpan<ulong> data64 = MemoryMarshal.Cast<byte, ulong>(data);
Span<byte> tile = stackalloc byte[BlockWidth * BlockHeight];
Span<byte> rPal = stackalloc byte[8];
Span<uint> tileAsUint = MemoryMarshal.Cast<byte, uint>(tile);
Span<uint> outputLine0 = default;
Span<uint> outputLine1 = default;
Span<uint> outputLine2 = default;
Span<uint> outputLine3 = default;
int imageBaseOOffs = 0;
for (int l = 0; l < levels; l++)
{
int w = BitUtils.DivRoundUp(width, BlockWidth);
int h = BitUtils.DivRoundUp(height, BlockHeight);
for (int l2 = 0; l2 < layers; l2++)
{
for (int z = 0; z < depth; z++)
{
for (int y = 0; y < h; y++)
{
int baseY = y * BlockHeight;
int copyHeight = Math.Min(BlockHeight, height - baseY);
int lineBaseOOffs = imageBaseOOffs + baseY * width;
if (copyHeight == 4)
{
outputLine0 = MemoryMarshal.Cast<byte, uint>(outputSpan.Slice(lineBaseOOffs));
outputLine1 = MemoryMarshal.Cast<byte, uint>(outputSpan.Slice(lineBaseOOffs + width));
outputLine2 = MemoryMarshal.Cast<byte, uint>(outputSpan.Slice(lineBaseOOffs + width * 2));
outputLine3 = MemoryMarshal.Cast<byte, uint>(outputSpan.Slice(lineBaseOOffs + width * 3));
}
for (int x = 0; x < w; x++)
{
int baseX = x * BlockWidth;
int copyWidth = Math.Min(BlockWidth, width - baseX);
ulong block = data64[0]; ulong block = data64[0];
@ -52,45 +353,43 @@ namespace Ryujinx.Graphics.Texture
if (signed) if (signed)
{ {
CalculateBC3AlphaS(rPal); BCnLerpAlphaSnorm(rPal);
} }
else else
{ {
CalculateBC3Alpha(rPal); BCnLerpAlphaUnorm(rPal);
} }
ulong rI = block >> 16; BCnDecodeTileAlpha(tile, rPal, block >> 16);
for (int texel = 0; texel < BlockWidth * BlockHeight; texel++) if ((copyWidth | copyHeight) == 4)
{ {
int tX = texel & 3; outputLine0[x] = tileAsUint[0];
int tY = texel >> 2; outputLine1[x] = tileAsUint[1];
outputLine2[x] = tileAsUint[2];
outputLine3[x] = tileAsUint[3];
}
else
{
int pixelBaseOOffs = lineBaseOOffs + baseX;
if (baseX + tX >= width || baseY + tY >= height) for (int tY = 0; tY < copyHeight; tY++)
{ {
continue; tile.Slice(tY * 4, copyWidth).CopyTo(outputSpan.Slice(pixelBaseOOffs + width * tY, copyWidth));
} }
int shift = texel * 3;
byte r = rPal[(int)((rI >> shift) & 7)];
int oOffs = lineBaseOOffs + tY * width + tX;
output[oOffs] = r;
} }
data64 = data64.Slice(1); data64 = data64.Slice(1);
} }
baseOOffs += width * (baseY + BlockHeight > height ? (height & (BlockHeight - 1)) : BlockHeight);
} }
imageBaseOOffs += width * height;
} }
} }
width = Math.Max(1, width >> 1); width = Math.Max(1, width >> 1);
height = Math.Max(1, height >> 1); height = Math.Max(1, height >> 1);
depth = Math.Max(1, depth >> 1); depth = Math.Max(1, depth >> 1);
} }
return output; return output;
@ -109,10 +408,22 @@ namespace Ryujinx.Graphics.Texture
ReadOnlySpan<ulong> data64 = MemoryMarshal.Cast<byte, ulong>(data); ReadOnlySpan<ulong> data64 = MemoryMarshal.Cast<byte, ulong>(data);
Span<byte> rTile = stackalloc byte[BlockWidth * BlockHeight * 2];
Span<byte> gTile = stackalloc byte[BlockWidth * BlockHeight * 2];
Span<byte> rPal = stackalloc byte[8]; Span<byte> rPal = stackalloc byte[8];
Span<byte> gPal = stackalloc byte[8]; Span<byte> gPal = stackalloc byte[8];
int baseOOffs = 0; Span<ushort> outputAsUshort = MemoryMarshal.Cast<byte, ushort>(output);
Span<uint> rTileAsUint = MemoryMarshal.Cast<byte, uint>(rTile);
Span<uint> gTileAsUint = MemoryMarshal.Cast<byte, uint>(gTile);
Span<ulong> outputLine0 = default;
Span<ulong> outputLine1 = default;
Span<ulong> outputLine2 = default;
Span<ulong> outputLine3 = default;
int imageBaseOOffs = 0;
for (int l = 0; l < levels; l++) for (int l = 0; l < levels; l++)
{ {
@ -126,11 +437,21 @@ namespace Ryujinx.Graphics.Texture
for (int y = 0; y < h; y++) for (int y = 0; y < h; y++)
{ {
int baseY = y * BlockHeight; int baseY = y * BlockHeight;
int copyHeight = Math.Min(BlockHeight, height - baseY);
int lineBaseOOffs = imageBaseOOffs + baseY * width;
if (copyHeight == 4)
{
outputLine0 = MemoryMarshal.Cast<ushort, ulong>(outputAsUshort.Slice(lineBaseOOffs));
outputLine1 = MemoryMarshal.Cast<ushort, ulong>(outputAsUshort.Slice(lineBaseOOffs + width));
outputLine2 = MemoryMarshal.Cast<ushort, ulong>(outputAsUshort.Slice(lineBaseOOffs + width * 2));
outputLine3 = MemoryMarshal.Cast<ushort, ulong>(outputAsUshort.Slice(lineBaseOOffs + width * 3));
}
for (int x = 0; x < w; x++) for (int x = 0; x < w; x++)
{ {
int baseX = x * BlockWidth; int baseX = x * BlockWidth;
int lineBaseOOffs = baseOOffs + baseX; int copyWidth = Math.Min(BlockWidth, width - baseX);
ulong blockL = data64[0]; ulong blockL = data64[0];
ulong blockH = data64[1]; ulong blockH = data64[1];
@ -142,101 +463,346 @@ namespace Ryujinx.Graphics.Texture
if (signed) if (signed)
{ {
CalculateBC3AlphaS(rPal); BCnLerpAlphaSnorm(rPal);
CalculateBC3AlphaS(gPal); BCnLerpAlphaSnorm(gPal);
} }
else else
{ {
CalculateBC3Alpha(rPal); BCnLerpAlphaUnorm(rPal);
CalculateBC3Alpha(gPal); BCnLerpAlphaUnorm(gPal);
} }
ulong rI = blockL >> 16; BCnDecodeTileAlpha(rTile, rPal, blockL >> 16);
ulong gI = blockH >> 16; BCnDecodeTileAlpha(gTile, gPal, blockH >> 16);
for (int texel = 0; texel < BlockWidth * BlockHeight; texel++) if ((copyWidth | copyHeight) == 4)
{ {
int tX = texel & 3; outputLine0[x] = InterleaveBytes(rTileAsUint[0], gTileAsUint[0]);
int tY = texel >> 2; outputLine1[x] = InterleaveBytes(rTileAsUint[1], gTileAsUint[1]);
outputLine2[x] = InterleaveBytes(rTileAsUint[2], gTileAsUint[2]);
outputLine3[x] = InterleaveBytes(rTileAsUint[3], gTileAsUint[3]);
}
else
{
int pixelBaseOOffs = lineBaseOOffs + baseX;
if (baseX + tX >= width || baseY + tY >= height) for (int tY = 0; tY < copyHeight; tY++)
{ {
continue; int line = pixelBaseOOffs + width * tY;
for (int tX = 0; tX < copyWidth; tX++)
{
int texel = tY * BlockWidth + tX;
outputAsUshort[line + tX] = (ushort)(rTile[texel] | (gTile[texel] << 8));
}
} }
int shift = texel * 3;
byte r = rPal[(int)((rI >> shift) & 7)];
byte g = gPal[(int)((gI >> shift) & 7)];
int oOffs = (lineBaseOOffs + tY * width + tX) * 2;
output[oOffs + 0] = r;
output[oOffs + 1] = g;
} }
data64 = data64.Slice(2); data64 = data64.Slice(2);
} }
baseOOffs += width * (baseY + BlockHeight > height ? (height & (BlockHeight - 1)) : BlockHeight);
} }
imageBaseOOffs += width * height;
} }
} }
width = Math.Max(1, width >> 1); width = Math.Max(1, width >> 1);
height = Math.Max(1, height >> 1); height = Math.Max(1, height >> 1);
depth = Math.Max(1, depth >> 1); depth = Math.Max(1, depth >> 1);
} }
return output; return output;
} }
[MethodImpl(MethodImplOptions.AggressiveInlining)] private static ulong InterleaveBytes(uint left, uint right)
private static void CalculateBC3Alpha(Span<byte> alpha)
{ {
for (int i = 2; i < 8; i++) return InterleaveBytesWithZeros(left) | (InterleaveBytesWithZeros(right) << 8);
}
private static ulong InterleaveBytesWithZeros(uint value)
{
ulong output = value;
output = (output ^ (output << 16)) & 0xffff0000ffffUL;
output = (output ^ (output << 8)) & 0xff00ff00ff00ffUL;
return output;
}
private static void BCnLerpAlphaUnorm(Span<byte> alpha)
{
byte a0 = alpha[0];
byte a1 = alpha[1];
if (a0 > a1)
{ {
if (alpha[0] > alpha[1]) alpha[2] = (byte)((6 * a0 + 1 * a1) / 7);
alpha[3] = (byte)((5 * a0 + 2 * a1) / 7);
alpha[4] = (byte)((4 * a0 + 3 * a1) / 7);
alpha[5] = (byte)((3 * a0 + 4 * a1) / 7);
alpha[6] = (byte)((2 * a0 + 5 * a1) / 7);
alpha[7] = (byte)((1 * a0 + 6 * a1) / 7);
}
else
{
alpha[2] = (byte)((4 * a0 + 1 * a1) / 5);
alpha[3] = (byte)((3 * a0 + 2 * a1) / 5);
alpha[4] = (byte)((2 * a0 + 3 * a1) / 5);
alpha[5] = (byte)((1 * a0 + 4 * a1) / 5);
alpha[6] = 0;
alpha[7] = 0xff;
}
}
private static void BCnLerpAlphaSnorm(Span<byte> alpha)
{
sbyte a0 = (sbyte)alpha[0];
sbyte a1 = (sbyte)alpha[1];
if (a0 > a1)
{
alpha[2] = (byte)((6 * a0 + 1 * a1) / 7);
alpha[3] = (byte)((5 * a0 + 2 * a1) / 7);
alpha[4] = (byte)((4 * a0 + 3 * a1) / 7);
alpha[5] = (byte)((3 * a0 + 4 * a1) / 7);
alpha[6] = (byte)((2 * a0 + 5 * a1) / 7);
alpha[7] = (byte)((1 * a0 + 6 * a1) / 7);
}
else
{
alpha[2] = (byte)((4 * a0 + 1 * a1) / 5);
alpha[3] = (byte)((3 * a0 + 2 * a1) / 5);
alpha[4] = (byte)((2 * a0 + 3 * a1) / 5);
alpha[5] = (byte)((1 * a0 + 4 * a1) / 5);
alpha[6] = 0x80;
alpha[7] = 0x7f;
}
}
private unsafe static void BCnDecodeTileAlpha(Span<byte> output, Span<byte> rPal, ulong rI)
{
if (Avx2.IsSupported)
{
Span<Vector128<byte>> outputAsVector128 = MemoryMarshal.Cast<byte, Vector128<byte>>(output);
Vector128<uint> shifts = Vector128.Create(0u, 3u, 6u, 9u);
Vector128<uint> masks = Vector128.Create(7u);
Vector128<byte> vClut;
fixed (byte* pRPal = rPal)
{ {
alpha[i] = (byte)(((8 - i) * alpha[0] + (i - 1) * alpha[1]) / 7); vClut = Sse2.LoadScalarVector128((ulong*)pRPal).AsByte();
} }
else if (i < 6)
Vector128<uint> indices0 = Vector128.Create((uint)rI);
Vector128<uint> indices1 = Vector128.Create((uint)(rI >> 24));
Vector128<uint> indices00 = Avx2.ShiftRightLogicalVariable(indices0, shifts);
Vector128<uint> indices10 = Avx2.ShiftRightLogicalVariable(indices1, shifts);
Vector128<uint> indices01 = Sse2.ShiftRightLogical(indices00, 12);
Vector128<uint> indices11 = Sse2.ShiftRightLogical(indices10, 12);
indices00 = Sse2.And(indices00, masks);
indices10 = Sse2.And(indices10, masks);
indices01 = Sse2.And(indices01, masks);
indices11 = Sse2.And(indices11, masks);
Vector128<ushort> indicesW0 = Sse41.PackUnsignedSaturate(indices00.AsInt32(), indices01.AsInt32());
Vector128<ushort> indicesW1 = Sse41.PackUnsignedSaturate(indices10.AsInt32(), indices11.AsInt32());
Vector128<byte> indices = Sse2.PackUnsignedSaturate(indicesW0.AsInt16(), indicesW1.AsInt16());
outputAsVector128[0] = Ssse3.Shuffle(vClut, indices);
}
else
{
for (int i = 0; i < BlockWidth * BlockHeight; i++, rI >>= 3)
{ {
alpha[i] = (byte)(((6 - i) * alpha[0] + (i - 1) * alpha[1]) / 7); output[i] = rPal[(int)(rI & 7)];
}
else if (i == 6)
{
alpha[i] = 0;
}
else /* i == 7 */
{
alpha[i] = 0xff;
} }
} }
} }
[MethodImpl(MethodImplOptions.AggressiveInlining)] private unsafe static void BCnDecodeTileAlphaRgba(Span<byte> output, Span<byte> rPal, ulong rI)
private static void CalculateBC3AlphaS(Span<byte> alpha)
{ {
for (int i = 2; i < 8; i++) if (Avx2.IsSupported)
{ {
if ((sbyte)alpha[0] > (sbyte)alpha[1]) Span<Vector256<uint>> outputAsVector256 = MemoryMarshal.Cast<byte, Vector256<uint>>(output);
Vector256<uint> shifts = Vector256.Create(0u, 3u, 6u, 9u, 12u, 15u, 18u, 21u);
Vector128<uint> vClut128;
fixed (byte* pRPal = rPal)
{ {
alpha[i] = (byte)(((8 - i) * (sbyte)alpha[0] + (i - 1) * (sbyte)alpha[1]) / 7); vClut128 = Sse2.LoadScalarVector128((ulong*)pRPal).AsUInt32();
} }
else if (i < 6)
Vector256<uint> vClut = Avx2.ConvertToVector256Int32(vClut128.AsByte()).AsUInt32();
vClut = Avx2.ShiftLeftLogical(vClut, 24);
Vector256<uint> indices0 = Vector256.Create((uint)rI);
Vector256<uint> indices1 = Vector256.Create((uint)(rI >> 24));
indices0 = Avx2.ShiftRightLogicalVariable(indices0, shifts);
indices1 = Avx2.ShiftRightLogicalVariable(indices1, shifts);
outputAsVector256[0] = Avx2.Or(outputAsVector256[0], Avx2.PermuteVar8x32(vClut, indices0));
outputAsVector256[1] = Avx2.Or(outputAsVector256[1], Avx2.PermuteVar8x32(vClut, indices1));
}
else
{
for (int i = 3; i < BlockWidth * BlockHeight * 4; i += 4, rI >>= 3)
{ {
alpha[i] = (byte)(((6 - i) * (sbyte)alpha[0] + (i - 1) * (sbyte)alpha[1]) / 7); output[i] = rPal[(int)(rI & 7)];
}
else if (i == 6)
{
alpha[i] = 0x80;
}
else /* i == 7 */
{
alpha[i] = 0x7f;
} }
} }
} }
private unsafe static void BC1DecodeTileRgb(Span<byte> output, ReadOnlySpan<byte> input)
{
Span<uint> clut = stackalloc uint[4];
uint c0c1 = BinaryPrimitives.ReadUInt32LittleEndian(input);
uint c0 = (ushort)c0c1;
uint c1 = (ushort)(c0c1 >> 16);
clut[0] = ConvertRgb565ToRgb888(c0) | 0xff000000;
clut[1] = ConvertRgb565ToRgb888(c1) | 0xff000000;
clut[2] = BC1LerpRgb2(clut[0], clut[1], c0, c1);
clut[3] = BC1LerpRgb3(clut[0], clut[1], c0, c1);
BCnDecodeTileRgb(clut, output, input);
}
private unsafe static void BC23DecodeTileRgb(Span<byte> output, ReadOnlySpan<byte> input)
{
Span<uint> clut = stackalloc uint[4];
uint c0c1 = BinaryPrimitives.ReadUInt32LittleEndian(input);
uint c0 = (ushort)c0c1;
uint c1 = (ushort)(c0c1 >> 16);
clut[0] = ConvertRgb565ToRgb888(c0);
clut[1] = ConvertRgb565ToRgb888(c1);
clut[2] = BC23LerpRgb2(clut[0], clut[1]);
clut[3] = BC23LerpRgb3(clut[0], clut[1]);
BCnDecodeTileRgb(clut, output, input);
}
private unsafe static void BCnDecodeTileRgb(Span<uint> clut, Span<byte> output, ReadOnlySpan<byte> input)
{
if (Avx2.IsSupported)
{
Span<Vector256<uint>> outputAsVector256 = MemoryMarshal.Cast<byte, Vector256<uint>>(output);
Vector256<uint> shifts0 = Vector256.Create(0u, 2u, 4u, 6u, 8u, 10u, 12u, 14u);
Vector256<uint> shifts1 = Vector256.Create(16u, 18u, 20u, 22u, 24u, 26u, 28u, 30u);
Vector256<uint> masks = Vector256.Create(3u);
Vector256<uint> vClut;
fixed (uint* pClut = &clut[0])
{
vClut = Sse2.LoadVector128(pClut).ToVector256Unsafe();
}
Vector256<uint> indices0;
fixed (byte* pInput = input)
{
indices0 = Avx2.BroadcastScalarToVector256((uint*)(pInput + 4));
}
Vector256<uint> indices1 = indices0;
indices0 = Avx2.ShiftRightLogicalVariable(indices0, shifts0);
indices1 = Avx2.ShiftRightLogicalVariable(indices1, shifts1);
indices0 = Avx2.And(indices0, masks);
indices1 = Avx2.And(indices1, masks);
outputAsVector256[0] = Avx2.PermuteVar8x32(vClut, indices0);
outputAsVector256[1] = Avx2.PermuteVar8x32(vClut, indices1);
}
else
{
Span<uint> outputAsUint = MemoryMarshal.Cast<byte, uint>(output);
uint indices = BinaryPrimitives.ReadUInt32LittleEndian(input.Slice(4));
for (int i = 0; i < BlockWidth * BlockHeight; i++, indices >>= 2)
{
outputAsUint[i] = clut[(int)(indices & 3)];
}
}
}
private static uint BC1LerpRgb2(uint color0, uint color1, uint c0, uint c1)
{
if (c0 > c1)
{
return BC23LerpRgb2(color0, color1) | 0xff000000;
}
uint carry = color0 & color1;
uint addHalve = ((color0 ^ color1) >> 1) & 0x7f7f7f;
return (addHalve + carry) | 0xff000000;
}
private static uint BC23LerpRgb2(uint color0, uint color1)
{
uint r0 = (byte)color0;
uint g0 = color0 & 0xff00;
uint b0 = color0 & 0xff0000;
uint r1 = (byte)color1;
uint g1 = color1 & 0xff00;
uint b1 = color1 & 0xff0000;
uint mixR = (2 * r0 + r1) / 3;
uint mixG = (2 * g0 + g1) / 3;
uint mixB = (2 * b0 + b1) / 3;
return mixR | (mixG & 0xff00) | (mixB & 0xff0000);
}
private static uint BC1LerpRgb3(uint color0, uint color1, uint c0, uint c1)
{
if (c0 > c1)
{
return BC23LerpRgb3(color0, color1) | 0xff000000;
}
return 0;
}
private static uint BC23LerpRgb3(uint color0, uint color1)
{
uint r0 = (byte)color0;
uint g0 = color0 & 0xff00;
uint b0 = color0 & 0xff0000;
uint r1 = (byte)color1;
uint g1 = color1 & 0xff00;
uint b1 = color1 & 0xff0000;
uint mixR = (2 * r1 + r0) / 3;
uint mixG = (2 * g1 + g0) / 3;
uint mixB = (2 * b1 + b0) / 3;
return mixR | (mixG & 0xff00) | (mixB & 0xff0000);
}
private static uint ConvertRgb565ToRgb888(uint value)
{
uint b = (value & 0x1f) << 19;
uint g = (value << 5) & 0xfc00;
uint r = (value >> 8) & 0xf8;
b |= b >> 5;
g |= g >> 6;
r |= r >> 5;
return r | (g & 0xff00) | (b & 0xff0000);
}
} }
} }