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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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62
Ryujinx.Graphics.Gpu/Image/TextureBindingsManager.cs
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@ -37,8 +37,8 @@ namespace Ryujinx.Graphics.Gpu.Image
private TexturePool _cachedTexturePool;
private SamplerPool _cachedSamplerPool;
private readonly TextureBindingInfo[][] _textureBindings;
private readonly TextureBindingInfo[][] _imageBindings;
private TextureBindingInfo[][] _textureBindings;
private TextureBindingInfo[][] _imageBindings;
private struct TextureState
{
@ -56,9 +56,6 @@ namespace Ryujinx.Graphics.Gpu.Image
private TextureState[] _textureState;
private TextureState[] _imageState;
private int[] _textureBindingsCount;
private int[] _imageBindingsCount;
private int _texturePoolSequence;
private int _samplerPoolSequence;
@ -101,9 +98,6 @@ namespace Ryujinx.Graphics.Gpu.Image
_textureState = new TextureState[InitialTextureStateSize];
_imageState = new TextureState[InitialImageStateSize];
_textureBindingsCount = new int[stages];
_imageBindingsCount = new int[stages];
for (int stage = 0; stage < stages; stage++)
{
_textureBindings[stage] = new TextureBindingInfo[InitialTextureStateSize];
@ -112,39 +106,15 @@ namespace Ryujinx.Graphics.Gpu.Image
}
/// <summary>
/// Rents the texture bindings array for a given stage, so that they can be modified.
/// Sets the texture and image bindings.
/// </summary>
/// <param name="stage">Shader stage number, or 0 for compute shaders</param>
/// <param name="count">The number of bindings needed</param>
/// <returns>The texture bindings array</returns>
public TextureBindingInfo[] RentTextureBindings(int stage, int count)
/// <param name="bindings">Bindings for the active shader</param>
public void SetBindings(CachedShaderBindings bindings)
{
if (count > _textureBindings[stage].Length)
{
Array.Resize(ref _textureBindings[stage], count);
}
_textureBindings = bindings.TextureBindings;
_imageBindings = bindings.ImageBindings;
_textureBindingsCount[stage] = count;
return _textureBindings[stage];
}
/// <summary>
/// Rents the image bindings array for a given stage, so that they can be modified.
/// </summary>
/// <param name="stage">Shader stage number, or 0 for compute shaders</param>
/// <param name="count">The number of bindings needed</param>
/// <returns>The image bindings array</returns>
public TextureBindingInfo[] RentImageBindings(int stage, int count)
{
if (count > _imageBindings[stage].Length)
{
Array.Resize(ref _imageBindings[stage], count);
}
_imageBindingsCount[stage] = count;
return _imageBindings[stage];
SetMaxBindings(bindings.MaxTextureBinding, bindings.MaxImageBinding);
}
/// <summary>
@ -257,7 +227,7 @@ namespace Ryujinx.Graphics.Gpu.Image
case ShaderStage.Vertex:
int fragmentIndex = (int)ShaderStage.Fragment - 1;
index += _textureBindingsCount[fragmentIndex] + _imageBindingsCount[fragmentIndex];
index += _textureBindings[fragmentIndex].Length + _imageBindings[fragmentIndex].Length;
result = texture.ScaleFactor;
break;
@ -284,7 +254,7 @@ namespace Ryujinx.Graphics.Gpu.Image
/// </summary>
private bool VertexRequiresScale()
{
for (int i = 0; i < _textureBindingsCount[0]; i++)
for (int i = 0; i < _textureBindings[0].Length; i++)
{
if ((_textureBindings[0][i].Flags & TextureUsageFlags.NeedsScaleValue) != 0)
{
@ -292,7 +262,7 @@ namespace Ryujinx.Graphics.Gpu.Image
}
}
for (int i = 0; i < _imageBindingsCount[0]; i++)
for (int i = 0; i < _imageBindings[0].Length; i++)
{
if ((_imageBindings[0][i].Flags & TextureUsageFlags.NeedsScaleValue) != 0)
{
@ -309,10 +279,10 @@ namespace Ryujinx.Graphics.Gpu.Image
private void CommitRenderScale()
{
// Stage 0 total: Compute or Vertex.
int total = _textureBindingsCount[0] + _imageBindingsCount[0];
int total = _textureBindings[0].Length + _imageBindings[0].Length;
int fragmentIndex = (int)ShaderStage.Fragment - 1;
int fragmentTotal = _isCompute ? 0 : (_textureBindingsCount[fragmentIndex] + _imageBindingsCount[fragmentIndex]);
int fragmentTotal = _isCompute ? 0 : (_textureBindings[fragmentIndex].Length + _imageBindings[fragmentIndex].Length);
if (total != 0 && fragmentTotal != _lastFragmentTotal && VertexRequiresScale())
{
@ -481,7 +451,7 @@ namespace Ryujinx.Graphics.Gpu.Image
bool poolModified,
ShaderSpecializationState specState)
{
int textureCount = _textureBindingsCount[stageIndex];
int textureCount = _textureBindings[stageIndex].Length;
if (textureCount == 0)
{
return true;
@ -609,7 +579,7 @@ namespace Ryujinx.Graphics.Gpu.Image
/// <returns>True if all bound images match the current shader specialiation state, false otherwise</returns>
private bool CommitImageBindings(TexturePool pool, ShaderStage stage, int stageIndex, bool poolModified, ShaderSpecializationState specState)
{
int imageCount = _imageBindingsCount[stageIndex];
int imageCount = _imageBindings[stageIndex].Length;
if (imageCount == 0)
{
return true;
@ -622,7 +592,7 @@ namespace Ryujinx.Graphics.Gpu.Image
}
// Scales for images appear after the texture ones.
int baseScaleIndex = _textureBindingsCount[stageIndex];
int baseScaleIndex = _textureBindings[stageIndex].Length;
int cachedTextureBufferIndex = -1;
int cachedSamplerBufferIndex = -1;