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GPU: Swap bindings array instead of copying (#4003)

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* GPU: Swap bindings array instead of copying

Reduces work on UpdateShaderState. Now the cost is a few reference moves for arrays, rather than copying data.

Downside: bindings arrays are no longer readonly.

* Micro optimisation

* Add missing docs

* Address Feedback
This commit is contained in:
riperiperi 2022-12-04 17:18:40 +00:00 • committed by GitHub
parent 3868a00206
commit 4965681e06
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GPG key ID: 4AEE18F83AFDEB23
7 changed files with 162 additions and 252 deletions
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80
Ryujinx.Graphics.Gpu/Engine/Threed/StateUpdater.cs
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@ -1257,88 +1257,24 @@ namespace Ryujinx.Graphics.Gpu.Engine.Threed
UpdateUserClipState();
}
UpdateShaderBindings(gs.Bindings);
for (int stageIndex = 0; stageIndex < Constants.ShaderStages; stageIndex++)
{
UpdateStageBindings(stageIndex, gs.Shaders[stageIndex + 1]?.Info);
_currentProgramInfo[stageIndex] = gs.Shaders[stageIndex + 1]?.Info;
}
_context.Renderer.Pipeline.SetProgram(gs.HostProgram);
}
/// <summary>
/// Updates bindings consumed by the shader stage on the texture and buffer managers.
/// Updates bindings consumed by the shader on the texture and buffer managers.
/// </summary>
/// <param name="stage">Shader stage to have the bindings updated</param>
/// <param name="info">Shader stage bindings info</param>
private void UpdateStageBindings(int stage, ShaderProgramInfo info)
/// <param name="bindings">Bindings for the active shader</param>
private void UpdateShaderBindings(CachedShaderBindings bindings)
{
_currentProgramInfo[stage] = info;
if (info == null)
{
_channel.TextureManager.RentGraphicsTextureBindings(stage, 0);
_channel.TextureManager.RentGraphicsImageBindings(stage, 0);
_channel.BufferManager.SetGraphicsStorageBufferBindings(stage, null);
_channel.BufferManager.SetGraphicsUniformBufferBindings(stage, null);
return;
}
int maxTextureBinding = -1;
int maxImageBinding = -1;
Span<TextureBindingInfo> textureBindings = _channel.TextureManager.RentGraphicsTextureBindings(stage, info.Textures.Count);
if (info.UsesRtLayer)
{
_vtgWritesRtLayer = true;
}
for (int index = 0; index < info.Textures.Count; index++)
{
var descriptor = info.Textures[index];
Target target = ShaderTexture.GetTarget(descriptor.Type);
textureBindings[index] = new TextureBindingInfo(
target,
descriptor.Binding,
descriptor.CbufSlot,
descriptor.HandleIndex,
descriptor.Flags);
if (descriptor.Binding > maxTextureBinding)
{
maxTextureBinding = descriptor.Binding;
}
}
TextureBindingInfo[] imageBindings = _channel.TextureManager.RentGraphicsImageBindings(stage, info.Images.Count);
for (int index = 0; index < info.Images.Count; index++)
{
var descriptor = info.Images[index];
Target target = ShaderTexture.GetTarget(descriptor.Type);
Format format = ShaderTexture.GetFormat(descriptor.Format);
imageBindings[index] = new TextureBindingInfo(
target,
format,
descriptor.Binding,
descriptor.CbufSlot,
descriptor.HandleIndex,
descriptor.Flags);
if (descriptor.Binding > maxImageBinding)
{
maxImageBinding = descriptor.Binding;
}
}
_channel.TextureManager.SetGraphicsMaxBindings(maxTextureBinding, maxImageBinding);
_channel.BufferManager.SetGraphicsStorageBufferBindings(stage, info.SBuffers);
_channel.BufferManager.SetGraphicsUniformBufferBindings(stage, info.CBuffers);
_channel.TextureManager.SetGraphicsBindings(bindings);
_channel.BufferManager.SetGraphicsBufferBindings(bindings);
}
/// <summary>