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using Ryujinx.Common;
using Ryujinx.Graphics.GAL;
using System;
using System.Runtime.InteropServices;
namespace Ryujinx.Graphics.Gpu.Engine.MME
{
/// <summary>
/// Table with information about High-level implementations of GPU Macro code.
/// </summary>
static class MacroHLETable
{
/// <summary>
/// Macroo High-level implementation table entry.
/// </summary>
readonly struct TableEntry
{
/// <summary>
/// Name of the Macro function.
/// </summary>
public MacroHLEFunctionName Name { get; }
/// <summary>
/// Hash of the original binary Macro function code.
/// </summary>
public Hash128 Hash { get; }
/// <summary>
/// Size (in bytes) of the original binary Macro function code.
/// </summary>
public int Length { get; }
/// <summary>
/// Creates a new table entry.
/// </summary>
/// <param name="name">Name of the Macro function</param>
/// <param name="hash">Hash of the original binary Macro function code</param>
/// <param name="length">Size (in bytes) of the original binary Macro function code</param>
public TableEntry(MacroHLEFunctionName name, Hash128 hash, int length)
{
Name = name;
Hash = hash;
Length = length;
}
}
private static readonly TableEntry[] _table = new TableEntry[]
{
new(MacroHLEFunctionName.BindShaderProgram, new Hash128(0x5d5efb912369f60b, 0x69131ed5019f08ef), 0x68),
new(MacroHLEFunctionName.ClearColor, new Hash128(0xA9FB28D1DC43645A, 0xB177E5D2EAE67FB0), 0x28),
new(MacroHLEFunctionName.ClearDepthStencil, new Hash128(0x1B96CB77D4879F4F, 0x8557032FE0C965FB), 0x24),
new(MacroHLEFunctionName.DrawArraysInstanced, new Hash128(0x197FB416269DBC26, 0x34288C01DDA82202), 0x48),
new(MacroHLEFunctionName.DrawElements, new Hash128(0x3D7F32AE6C2702A7, 0x9353C9F41C1A244D), 0x20),
new(MacroHLEFunctionName.DrawElementsInstanced, new Hash128(0x1A501FD3D54EC8E0, 0x6CF570CF79DA74D6), 0x5c),
new(MacroHLEFunctionName.DrawElementsIndirect, new Hash128(0x86A3E8E903AF8F45, 0xD35BBA07C23860A4), 0x7c),
new(MacroHLEFunctionName.MultiDrawElementsIndirectCount, new Hash128(0x890AF57ED3FB1C37, 0x35D0C95C61F5386F), 0x19C),
new(MacroHLEFunctionName.UpdateBlendState, new Hash128(0x40F6D4E7B08D7640, 0x82167BEEAECB959F), 0x28),
new(MacroHLEFunctionName.UpdateColorMasks, new Hash128(0x9EE32420B8441DFD, 0x6E7724759A57333E), 0x24),
new(MacroHLEFunctionName.UpdateUniformBufferState, new Hash128(0x8EE66706049CB0B0, 0x51C1CF906EC86F7C), 0x20),
new(MacroHLEFunctionName.UpdateUniformBufferStateCbu, new Hash128(0xA4592676A3E581A0, 0xA39E77FE19FE04AC), 0x18),
new(MacroHLEFunctionName.UpdateUniformBufferStateCbuV2, new Hash128(0x392FA750489983D4, 0x35BACE455155D2C3), 0x18)
};
/// <summary>
/// Checks if the host supports all features required by the HLE macro.
/// </summary>
/// <param name="caps">Host capabilities</param>
/// <param name="name">Name of the HLE macro to be checked</param>
/// <returns>True if the host supports the HLE macro, false otherwise</returns>
private static bool IsMacroHLESupported(Capabilities caps, MacroHLEFunctionName name)
{
if (name == MacroHLEFunctionName.MultiDrawElementsIndirectCount)
{
return caps.SupportsIndirectParameters;
}
else if (name != MacroHLEFunctionName.None)
{
return true;
}
return false;
}
/// <summary>
/// Checks if there's a fast, High-level implementation of the specified Macro code available.
/// </summary>
/// <param name="code">Macro code to be checked</param>
/// <param name="caps">Renderer capabilities to check for this macro HLE support</param>
/// <param name="name">Name of the function if a implementation is available and supported, otherwise <see cref="MacroHLEFunctionName.None"/></param>
/// <returns>True if there is a implementation available and supported, false otherwise</returns>
public static bool TryGetMacroHLEFunction(ReadOnlySpan<int> code, Capabilities caps, out MacroHLEFunctionName name)
{
var mc = MemoryMarshal.Cast<int, byte>(code);
for (int i = 0; i < _table.Length; i++)
{
ref var entry = ref _table[i];
var hash = XXHash128.ComputeHash(mc[..entry.Length]);
if (hash == entry.Hash)
{
if (IsMacroHLESupported(caps, entry.Name))
{
name = entry.Name;
return true;
}
break;
}
}
name = MacroHLEFunctionName.None;
return false;
}
}
}
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