Ryujinx-git/Ryujinx.Graphics.Gpu/Shader/GpuAccessor.cs

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C#
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using Ryujinx.Common.Logging;
using Ryujinx.Graphics.GAL;
using Ryujinx.Graphics.Gpu.Image;
using Ryujinx.Graphics.Gpu.State;
using Ryujinx.Graphics.Shader;
using System;
namespace Ryujinx.Graphics.Gpu.Shader
{
/// <summary>
/// Represents a GPU state and memory accessor.
/// </summary>
class GpuAccessor : IGpuAccessor
{
private readonly GpuContext _context;
private readonly GpuState _state;
private readonly int _stageIndex;
private readonly bool _compute;
private readonly int _localSizeX;
private readonly int _localSizeY;
private readonly int _localSizeZ;
private readonly int _localMemorySize;
private readonly int _sharedMemorySize;
/// <summary>
/// Creates a new instance of the GPU state accessor for graphics shader translation.
/// </summary>
/// <param name="context">GPU context</param>
/// <param name="state">Current GPU state</param>
/// <param name="stageIndex">Graphics shader stage index (0 = Vertex, 4 = Fragment)</param>
public GpuAccessor(GpuContext context, GpuState state, int stageIndex)
{
_context = context;
_state = state;
_stageIndex = stageIndex;
}
/// <summary>
/// Creates a new instance of the GPU state accessor for compute shader translation.
/// </summary>
/// <param name="context">GPU context</param>
/// <param name="state">Current GPU state</param>
/// <param name="localSizeX">Local group size X of the compute shader</param>
/// <param name="localSizeY">Local group size Y of the compute shader</param>
/// <param name="localSizeZ">Local group size Z of the compute shader</param>
/// <param name="localMemorySize">Local memory size of the compute shader</param>
/// <param name="sharedMemorySize">Shared memory size of the compute shader</param>
public GpuAccessor(
GpuContext context,
GpuState state,
int localSizeX,
int localSizeY,
int localSizeZ,
int localMemorySize,
int sharedMemorySize)
{
_context = context;
_state = state;
_compute = true;
_localSizeX = localSizeX;
_localSizeY = localSizeY;
_localSizeZ = localSizeZ;
_localMemorySize = localMemorySize;
_sharedMemorySize = sharedMemorySize;
}
/// <summary>
/// Prints a log message.
/// </summary>
/// <param name="message">Message to print</param>
public void Log(string message)
{
Logger.PrintWarning(LogClass.Gpu, $"Shader translator: {message}");
}
/// <summary>
/// Reads data from GPU memory.
/// </summary>
/// <typeparam name="T">Type of the data to be read</typeparam>
/// <param name="address">GPU virtual address of the data</param>
/// <returns>Data at the memory location</returns>
public T MemoryRead<T>(ulong address) where T : unmanaged
{
return _context.MemoryAccessor.Read<T>(address);
}
/// <summary>
/// Queries Local Size X for compute shaders.
/// </summary>
/// <returns>Local Size X</returns>
public int QueryComputeLocalSizeX() => _localSizeX;
/// <summary>
/// Queries Local Size Y for compute shaders.
/// </summary>
/// <returns>Local Size Y</returns>
public int QueryComputeLocalSizeY() => _localSizeY;
/// <summary>
/// Queries Local Size Z for compute shaders.
/// </summary>
/// <returns>Local Size Z</returns>
public int QueryComputeLocalSizeZ() => _localSizeZ;
/// <summary>
/// Queries Local Memory size in bytes for compute shaders.
/// </summary>
/// <returns>Local Memory size in bytes</returns>
public int QueryComputeLocalMemorySize() => _localMemorySize;
/// <summary>
/// Queries Shared Memory size in bytes for compute shaders.
/// </summary>
/// <returns>Shared Memory size in bytes</returns>
public int QueryComputeSharedMemorySize() => _sharedMemorySize;
/// <summary>
/// Queries texture target information.
/// </summary>
/// <param name="handle">Texture handle</param>
/// <returns>True if the texture is a buffer texture, false otherwise</returns>
public bool QueryIsTextureBuffer(int handle)
{
return GetTextureDescriptor(handle).UnpackTextureTarget() == TextureTarget.TextureBuffer;
}
/// <summary>
/// Queries texture target information.
/// </summary>
/// <param name="handle">Texture handle</param>
/// <returns>True if the texture is a rectangle texture, false otherwise</returns>
public bool QueryIsTextureRectangle(int handle)
{
var descriptor = GetTextureDescriptor(handle);
TextureTarget target = descriptor.UnpackTextureTarget();
bool is2DTexture = target == TextureTarget.Texture2D ||
target == TextureTarget.Texture2DRect;
return !descriptor.UnpackTextureCoordNormalized() && is2DTexture;
}
/// <summary>
/// Queries current primitive topology for geometry shaders.
/// </summary>
/// <returns>Current primitive topology</returns>
public InputTopology QueryPrimitiveTopology()
{
switch (_context.Methods.PrimitiveType)
{
case PrimitiveType.Points:
return InputTopology.Points;
case PrimitiveType.Lines:
case PrimitiveType.LineLoop:
case PrimitiveType.LineStrip:
return InputTopology.Lines;
case PrimitiveType.LinesAdjacency:
case PrimitiveType.LineStripAdjacency:
return InputTopology.LinesAdjacency;
case PrimitiveType.Triangles:
case PrimitiveType.TriangleStrip:
case PrimitiveType.TriangleFan:
return InputTopology.Triangles;
case PrimitiveType.TrianglesAdjacency:
case PrimitiveType.TriangleStripAdjacency:
return InputTopology.TrianglesAdjacency;
}
return InputTopology.Points;
}
/// <summary>
/// Queries host storage buffer alignment required.
/// </summary>
/// <returns>Host storage buffer alignment in bytes</returns>
public int QueryStorageBufferOffsetAlignment() => _context.Capabilities.StorageBufferOffsetAlignment;
/// <summary>
/// Queries host support for readable images without a explicit format declaration on the shader.
/// </summary>
/// <returns>True if formatted image load is supported, false otherwise</returns>
public bool QuerySupportsImageLoadFormatted() => _context.Capabilities.SupportsImageLoadFormatted;
/// <summary>
/// Queries host GPU non-constant texture offset support.
/// </summary>
/// <returns>True if the GPU and driver supports non-constant texture offsets, false otherwise</returns>
public bool QuerySupportsNonConstantTextureOffset() => _context.Capabilities.SupportsNonConstantTextureOffset;
/// <summary>
/// Queries host GPU viewport swizzle support.
/// </summary>
/// <returns>True if the GPU and driver supports viewport swizzle, false otherwise</returns>
public bool QuerySupportsViewportSwizzle() => _context.Capabilities.SupportsViewportSwizzle;
/// <summary>
/// Queries texture format information, for shaders using image load or store.
/// </summary>
/// <remarks>
/// This only returns non-compressed color formats.
/// If the format of the texture is a compressed, depth or unsupported format, then a default value is returned.
/// </remarks>
/// <param name="handle">Texture handle</param>
/// <returns>Color format of the non-compressed texture</returns>
public TextureFormat QueryTextureFormat(int handle)
{
var descriptor = GetTextureDescriptor(handle);
if (!FormatTable.TryGetTextureFormat(descriptor.UnpackFormat(), descriptor.UnpackSrgb(), out FormatInfo formatInfo))
{
return TextureFormat.Unknown;
}
return formatInfo.Format switch
{
Format.R8Unorm => TextureFormat.R8Unorm,
Format.R8Snorm => TextureFormat.R8Snorm,
Format.R8Uint => TextureFormat.R8Uint,
Format.R8Sint => TextureFormat.R8Sint,
Format.R16Float => TextureFormat.R16Float,
Format.R16Unorm => TextureFormat.R16Unorm,
Format.R16Snorm => TextureFormat.R16Snorm,
Format.R16Uint => TextureFormat.R16Uint,
Format.R16Sint => TextureFormat.R16Sint,
Format.R32Float => TextureFormat.R32Float,
Format.R32Uint => TextureFormat.R32Uint,
Format.R32Sint => TextureFormat.R32Sint,
Format.R8G8Unorm => TextureFormat.R8G8Unorm,
Format.R8G8Snorm => TextureFormat.R8G8Snorm,
Format.R8G8Uint => TextureFormat.R8G8Uint,
Format.R8G8Sint => TextureFormat.R8G8Sint,
Format.R16G16Float => TextureFormat.R16G16Float,
Format.R16G16Unorm => TextureFormat.R16G16Unorm,
Format.R16G16Snorm => TextureFormat.R16G16Snorm,
Format.R16G16Uint => TextureFormat.R16G16Uint,
Format.R16G16Sint => TextureFormat.R16G16Sint,
Format.R32G32Float => TextureFormat.R32G32Float,
Format.R32G32Uint => TextureFormat.R32G32Uint,
Format.R32G32Sint => TextureFormat.R32G32Sint,
Format.R8G8B8A8Unorm => TextureFormat.R8G8B8A8Unorm,
Format.R8G8B8A8Snorm => TextureFormat.R8G8B8A8Snorm,
Format.R8G8B8A8Uint => TextureFormat.R8G8B8A8Uint,
Format.R8G8B8A8Sint => TextureFormat.R8G8B8A8Sint,
Format.R16G16B16A16Float => TextureFormat.R16G16B16A16Float,
Format.R16G16B16A16Unorm => TextureFormat.R16G16B16A16Unorm,
Format.R16G16B16A16Snorm => TextureFormat.R16G16B16A16Snorm,
Format.R16G16B16A16Uint => TextureFormat.R16G16B16A16Uint,
Format.R16G16B16A16Sint => TextureFormat.R16G16B16A16Sint,
Format.R32G32B32A32Float => TextureFormat.R32G32B32A32Float,
Format.R32G32B32A32Uint => TextureFormat.R32G32B32A32Uint,
Format.R32G32B32A32Sint => TextureFormat.R32G32B32A32Sint,
Format.R10G10B10A2Unorm => TextureFormat.R10G10B10A2Unorm,
Format.R10G10B10A2Uint => TextureFormat.R10G10B10A2Uint,
Format.R11G11B10Float => TextureFormat.R11G11B10Float,
_ => TextureFormat.Unknown
};
}
public int QueryViewportSwizzle(int component)
{
YControl yControl = _state.Get<YControl>(MethodOffset.YControl);
bool flipY = yControl.HasFlag(YControl.NegateY) ^ !yControl.HasFlag(YControl.TriangleRastFlip);
ViewportTransform transform = _state.Get<ViewportTransform>(MethodOffset.ViewportTransform, 0);
return component switch
{
0 => (int)(transform.UnpackSwizzleX() ^ (transform.ScaleX < 0 ? ViewportSwizzle.NegativeFlag : 0)),
1 => (int)(transform.UnpackSwizzleY() ^ (transform.ScaleY < 0 ? ViewportSwizzle.NegativeFlag : 0) ^ (flipY ? ViewportSwizzle.NegativeFlag : 0)),
2 => (int)(transform.UnpackSwizzleZ() ^ (transform.ScaleZ < 0 ? ViewportSwizzle.NegativeFlag : 0)),
3 => (int)transform.UnpackSwizzleW(),
_ => throw new ArgumentOutOfRangeException(nameof(component))
};
}
/// <summary>
/// Gets the texture descriptor for a given texture on the pool.
/// </summary>
/// <param name="handle">Index of the texture (this is the shader "fake" handle)</param>
/// <returns>Texture descriptor</returns>
private Image.TextureDescriptor GetTextureDescriptor(int handle)
{
if (_compute)
{
return _context.Methods.TextureManager.GetComputeTextureDescriptor(_state, handle);
}
else
{
return _context.Methods.TextureManager.GetGraphicsTextureDescriptor(_state, _stageIndex, handle);
}
}
}
}