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Vulkan: Batch vertex buffer updates (#4843)

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* Vulkan: Batch vertex buffer updates

Some games can bind a large number of vertex buffers for draws. This PR allows for vertex buffers to be updated with one call rather than one per buffer.

This mostly affects the AMD Mesa driver, the testing platform was Steam Deck with Super Mario Odyssey. It was taking about 12% before, should be greatly reduced now.

A small optimization has been added to avoid looking up the same buffer multiple times, as a common pattern is for the same buffer to be bound many times in a row with different ranges.

* Only rebind vertex buffers if they have changed

* Address feedback
This commit is contained in:
riperiperi
2023-05-08 09:59:26 +01:00
committed by GitHub
parent 0e06aace45
commit 895d9b53bc
3 changed files with 124 additions and 42 deletions
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43
src/Ryujinx.Graphics.Vulkan/PipelineBase.cs
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@ -66,6 +66,8 @@ namespace Ryujinx.Graphics.Vulkan
private ulong _vertexBuffersDirty;
protected Rectangle<int> ClearScissor;
private readonly VertexBufferUpdater _vertexBufferUpdater;
public SupportBufferUpdater SupportBufferUpdater;
public IndexBufferPattern QuadsToTrisPattern;
public IndexBufferPattern TriFanToTrisPattern;
@ -96,6 +98,7 @@ namespace Ryujinx.Graphics.Vulkan
gd.Api.CreatePipelineCache(device, pipelineCacheCreateInfo, null, out PipelineCache).ThrowOnError();
_descriptorSetUpdater = new DescriptorSetUpdater(gd, this);
_vertexBufferUpdater = new VertexBufferUpdater(gd);
_transformFeedbackBuffers = new BufferState[Constants.MaxTransformFeedbackBuffers];
_vertexBuffers = new VertexBufferState[Constants.MaxVertexBuffers + 1];
@ -1185,6 +1188,9 @@ namespace Ryujinx.Graphics.Vulkan
int validCount = 1;
BufferHandle lastHandle = default;
Auto<DisposableBuffer> lastBuffer = default;
for (int i = 0; i < count; i++)
{
var vertexBuffer = vertexBuffers[i];
@ -1194,7 +1200,12 @@ namespace Ryujinx.Graphics.Vulkan
if (vertexBuffer.Buffer.Handle != BufferHandle.Null)
{
var vb = Gd.BufferManager.GetBuffer(CommandBuffer, vertexBuffer.Buffer.Handle, false);
Auto<DisposableBuffer> vb = (vertexBuffer.Buffer.Handle == lastHandle) ? lastBuffer :
Gd.BufferManager.GetBuffer(CommandBuffer, vertexBuffer.Buffer.Handle, false);
lastHandle = vertexBuffer.Buffer.Handle;
lastBuffer = vb;
if (vb != null)
{
int binding = i + 1;
@ -1222,24 +1233,29 @@ namespace Ryujinx.Graphics.Vulkan
ref var buffer = ref _vertexBuffers[binding];
int oldScalarAlign = buffer.AttributeScalarAlignment;
buffer.Dispose();
if (Gd.Capabilities.VertexBufferAlignment < 2 &&
(vertexBuffer.Stride % FormatExtensions.MaxBufferFormatScalarSize) == 0)
{
buffer = new VertexBufferState(
vb,
descriptorIndex,
vertexBuffer.Buffer.Offset,
vbSize,
vertexBuffer.Stride);
if (!buffer.Matches(vb, descriptorIndex, vertexBuffer.Buffer.Offset, vbSize, vertexBuffer.Stride))
{
buffer.Dispose();
buffer.BindVertexBuffer(Gd, Cbs, (uint)binding, ref _newState);
buffer = new VertexBufferState(
vb,
descriptorIndex,
vertexBuffer.Buffer.Offset,
vbSize,
vertexBuffer.Stride);
buffer.BindVertexBuffer(Gd, Cbs, (uint)binding, ref _newState, _vertexBufferUpdater);
}
}
else
{
// May need to be rewritten. Bind this buffer before draw.
buffer.Dispose();
buffer = new VertexBufferState(
vertexBuffer.Buffer.Handle,
descriptorIndex,
@ -1255,6 +1271,8 @@ namespace Ryujinx.Graphics.Vulkan
}
}
_vertexBufferUpdater.Commit(Cbs);
_newState.VertexBindingDescriptionsCount = (uint)validCount;
SignalStateChange();
}
@ -1596,10 +1614,12 @@ namespace Ryujinx.Graphics.Vulkan
{
int i = BitOperations.TrailingZeroCount(_vertexBuffersDirty);
_vertexBuffers[i].BindVertexBuffer(Gd, Cbs, (uint)i, ref _newState);
_vertexBuffers[i].BindVertexBuffer(Gd, Cbs, (uint)i, ref _newState, _vertexBufferUpdater);
_vertexBuffersDirty &= ~(1UL << i);
}
_vertexBufferUpdater.Commit(Cbs);
}
if (_stateDirty || Pbp != pbp)
@ -1712,6 +1732,7 @@ namespace Ryujinx.Graphics.Vulkan
_framebuffer?.Dispose();
_newState.Dispose();
_descriptorSetUpdater.Dispose();
_vertexBufferUpdater.Dispose();
for (int i = 0; i < _vertexBuffers.Length; i++)
{