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using Ryujinx.Common.Logging;
using Ryujinx.Graphics.Gpu.Shader.Cache.Definition;
using Ryujinx.Graphics.Shader;
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
namespace Ryujinx.Graphics.Gpu.Shader
{
class CachedGpuAccessor : TextureDescriptorCapableGpuAccessor, IGpuAccessor
{
private readonly ReadOnlyMemory<byte> _data;
private readonly ReadOnlyMemory<byte> _cb1Data;
private readonly GuestGpuAccessorHeader _header;
private readonly Dictionary<int, GuestTextureDescriptor> _textureDescriptors;
/// <summary>
/// Creates a new instance of the cached GPU state accessor for shader translation.
/// </summary>
/// <param name="context">GPU context</param>
/// <param name="data">The data of the shader</param>
/// <param name="cb1Data">The constant buffer 1 data of the shader</param>
/// <param name="header">The cache of the GPU accessor</param>
/// <param name="guestTextureDescriptors">The cache of the texture descriptors</param>
public CachedGpuAccessor(
GpuContext context,
ReadOnlyMemory<byte> data,
ReadOnlyMemory<byte> cb1Data,
GuestGpuAccessorHeader header,
IReadOnlyDictionary<int, GuestTextureDescriptor> guestTextureDescriptors) : base(context)
{
_data = data;
_cb1Data = cb1Data;
_header = header;
_textureDescriptors = new Dictionary<int, GuestTextureDescriptor>();
foreach (KeyValuePair<int, GuestTextureDescriptor> guestTextureDescriptor in guestTextureDescriptors)
{
_textureDescriptors.Add(guestTextureDescriptor.Key, guestTextureDescriptor.Value);
}
}
/// <summary>
/// Reads data from the constant buffer 1.
/// </summary>
/// <param name="offset">Offset in bytes to read from</param>
/// <returns>Value at the given offset</returns>
public uint ConstantBuffer1Read(int offset)
{
return MemoryMarshal.Cast<byte, uint>(_cb1Data.Span.Slice(offset))[0];
}
/// <summary>
/// Prints a log message.
/// </summary>
/// <param name="message">Message to print</param>
public void Log(string message)
{
Logger.Warning?.Print(LogClass.Gpu, $"Shader translator: {message}");
}
/// <summary>
/// Gets a span of the specified memory location, containing shader code.
/// </summary>
/// <param name="address">GPU virtual address of the data</param>
/// <param name="minimumSize">Minimum size that the returned span may have</param>
/// <returns>Span of the memory location</returns>
public override ReadOnlySpan<ulong> GetCode(ulong address, int minimumSize)
{
return MemoryMarshal.Cast<byte, ulong>(_data.Span.Slice((int)address));
}
/// <summary>
/// Checks if a given memory address is mapped.
/// </summary>
/// <param name="address">GPU virtual address to be checked</param>
/// <returns>True if the address is mapped, false otherwise</returns>
public bool MemoryMapped(ulong address)
{
return address < (ulong)_data.Length;
}
/// <summary>
/// Queries Local Size X for compute shaders.
/// </summary>
/// <returns>Local Size X</returns>
public int QueryComputeLocalSizeX()
{
return _header.ComputeLocalSizeX;
}
/// <summary>
/// Queries Local Size Y for compute shaders.
/// </summary>
/// <returns>Local Size Y</returns>
public int QueryComputeLocalSizeY()
{
return _header.ComputeLocalSizeY;
}
/// <summary>
/// Queries Local Size Z for compute shaders.
/// </summary>
/// <returns>Local Size Z</returns>
public int QueryComputeLocalSizeZ()
{
return _header.ComputeLocalSizeZ;
}
/// <summary>
/// Queries Local Memory size in bytes for compute shaders.
/// </summary>
/// <returns>Local Memory size in bytes</returns>
public int QueryComputeLocalMemorySize()
{
return _header.ComputeLocalMemorySize;
}
/// <summary>
/// Queries Shared Memory size in bytes for compute shaders.
/// </summary>
/// <returns>Shared Memory size in bytes</returns>
public int QueryComputeSharedMemorySize()
{
return _header.ComputeSharedMemorySize;
}
/// <summary>
/// Queries current primitive topology for geometry shaders.
/// </summary>
/// <returns>Current primitive topology</returns>
public InputTopology QueryPrimitiveTopology()
{
return _header.PrimitiveTopology;
}
/// <summary>
/// Queries the tessellation evaluation shader primitive winding order.
/// </summary>
/// <returns>True if the primitive winding order is clockwise, false if counter-clockwise</returns>
public bool QueryTessCw()
{
return (_header.TessellationModePacked & 0x10) != 0;
}
/// <summary>
/// Queries the tessellation evaluation shader abstract patch type.
/// </summary>
/// <returns>Abstract patch type</returns>
public TessPatchType QueryTessPatchType()
{
return (TessPatchType)(_header.TessellationModePacked & 3);
}
/// <summary>
/// Queries the tessellation evaluation shader spacing between tessellated vertices of the patch.
/// </summary>
/// <returns>Spacing between tessellated vertices of the patch</returns>
public TessSpacing QueryTessSpacing()
{
return (TessSpacing)((_header.TessellationModePacked >> 2) & 3);
}
/// <summary>
/// Gets the texture descriptor for a given texture on the pool.
/// </summary>
/// <param name="handle">Index of the texture (this is the word offset of the handle in the constant buffer)</param>
/// <param name="cbufSlot">Constant buffer slot for the texture handle</param>
/// <returns>Texture descriptor</returns>
public override Image.ITextureDescriptor GetTextureDescriptor(int handle, int cbufSlot)
{
if (!_textureDescriptors.TryGetValue(handle, out GuestTextureDescriptor textureDescriptor))
{
throw new ArgumentException();
}
return textureDescriptor;
}
/// <summary>
/// Queries if host state forces early depth testing.
/// </summary>
/// <returns>True if early depth testing is forced</returns>
public bool QueryEarlyZForce()
{
return (_header.StateFlags & GuestGpuStateFlags.EarlyZForce) != 0;
}
}
}
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