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using Ryujinx.Graphics.GAL;
using System;
namespace Ryujinx.Graphics.Vulkan
{
internal class PersistentFlushBuffer : IDisposable
{
private readonly VulkanRenderer _gd;
private BufferHolder _flushStorage;
public PersistentFlushBuffer(VulkanRenderer gd)
{
_gd = gd;
}
private BufferHolder ResizeIfNeeded(int size)
{
var flushStorage = _flushStorage;
if (flushStorage == null || size > _flushStorage.Size)
{
flushStorage?.Dispose();
flushStorage = _gd.BufferManager.Create(_gd, size);
_flushStorage = flushStorage;
}
return flushStorage;
}
public Span<byte> GetBufferData(CommandBufferPool cbp, BufferHolder buffer, int offset, int size)
{
var flushStorage = ResizeIfNeeded(size);
Auto<DisposableBuffer> srcBuffer;
using (var cbs = cbp.Rent())
{
srcBuffer = buffer.GetBuffer(cbs.CommandBuffer);
var dstBuffer = flushStorage.GetBuffer(cbs.CommandBuffer);
if (srcBuffer.TryIncrementReferenceCount())
{
BufferHolder.Copy(_gd, cbs, srcBuffer, dstBuffer, offset, 0, size, registerSrcUsage: false);
}
else
{
// Source buffer is no longer alive, don't copy anything to flush storage.
srcBuffer = null;
}
}
flushStorage.WaitForFences();
srcBuffer?.DecrementReferenceCount();
return flushStorage.GetDataStorage(0, size);
}
public Span<byte> GetTextureData(CommandBufferPool cbp, TextureView view, int size)
{
TextureCreateInfo info = view.Info;
var flushStorage = ResizeIfNeeded(size);
using (var cbs = cbp.Rent())
{
var buffer = flushStorage.GetBuffer(cbs.CommandBuffer).Get(cbs).Value;
var image = view.GetImage().Get(cbs).Value;
view.CopyFromOrToBuffer(cbs.CommandBuffer, buffer, image, size, true, 0, 0, info.GetLayers(), info.Levels, singleSlice: false);
}
flushStorage.WaitForFences();
return flushStorage.GetDataStorage(0, size);
}
public Span<byte> GetTextureData(CommandBufferPool cbp, TextureView view, int size, int layer, int level)
{
var flushStorage = ResizeIfNeeded(size);
using (var cbs = cbp.Rent())
{
var buffer = flushStorage.GetBuffer(cbs.CommandBuffer).Get(cbs).Value;
var image = view.GetImage().Get(cbs).Value;
view.CopyFromOrToBuffer(cbs.CommandBuffer, buffer, image, size, true, layer, level, 1, 1, singleSlice: true);
}
flushStorage.WaitForFences();
return flushStorage.GetDataStorage(0, size);
}
public void Dispose()
{
_flushStorage.Dispose();
}
}
}
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