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Support partial invalidation on texture access (#1000)

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* Support partial invalidation on texture access

* Fix typo

* PR feedback

* Fix modified size clamping
This commit is contained in:
gdkchan 2020-03-20 00:17:11 -03:00 • committed by GitHub
parent 32d3f3f690
commit 8e64984158
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 113 additions and 13 deletions
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76
Ryujinx.Graphics.Gpu/Image/Texture.cs
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@ -302,15 +302,68 @@ namespace Ryujinx.Graphics.Gpu.Image
_sequenceNumber = _context.SequenceNumber;
bool modified = _context.PhysicalMemory.GetModifiedRanges(Address, Size, ResourceName.Texture).Length != 0;
(ulong, ulong)[] modifiedRanges = _context.PhysicalMemory.GetModifiedRanges(Address, Size, ResourceName.Texture);
if (!modified && _hasData)
if (modifiedRanges.Length == 0 && _hasData)
{
return;
}
ReadOnlySpan<byte> data = _context.PhysicalMemory.GetSpan(Address, Size);
// If the texture was modified by the host GPU, we do partial invalidation
// of the texture by getting GPU data and merging in the pages of memory
// that were modified.
// Note that if ASTC is not supported by the GPU we can't read it back since
// it will use a different format. Since applications shouldn't be writing
// ASTC textures from the GPU anyway, ignoring it should be safe.
if (_context.Methods.TextureManager.IsTextureModified(this) && !Info.FormatInfo.Format.IsAstc())
{
Span<byte> gpuData = GetTextureDataFromGpu();
ulong endAddress = Address + Size;
for (int i = 0; i < modifiedRanges.Length; i++)
{
(ulong modifiedAddress, ulong modifiedSize) = modifiedRanges[i];
ulong endModifiedAddress = modifiedAddress + modifiedSize;
if (modifiedAddress < Address)
{
modifiedAddress = Address;
}
if (endModifiedAddress > endAddress)
{
endModifiedAddress = endAddress;
}
modifiedSize = endModifiedAddress - modifiedAddress;
int offset = (int)(modifiedAddress - Address);
int length = (int)modifiedSize;
data.Slice(offset, length).CopyTo(gpuData.Slice(offset, length));
}
data = gpuData;
}
data = ConvertToHostCompatibleFormat(data);
HostTexture.SetData(data);
_hasData = true;
}
/// <summary>
/// Converts texture data to a format and layout that is supported by the host GPU.
/// </summary>
/// <param name="data">Data to be converted</param>
/// <returns>Converted data</returns>
private ReadOnlySpan<byte> ConvertToHostCompatibleFormat(ReadOnlySpan<byte> data)
{
if (Info.IsLinear)
{
data = LayoutConverter.ConvertLinearStridedToLinear(
@ -360,9 +413,7 @@ namespace Ryujinx.Graphics.Gpu.Image
data = decoded;
}
HostTexture.SetData(data);
_hasData = true;
return data;
}
/// <summary>
@ -374,6 +425,19 @@ namespace Ryujinx.Graphics.Gpu.Image
/// This may cause data corruption if the memory is already being used for something else on the CPU side.
/// </summary>
public void Flush()
{
_context.PhysicalMemory.Write(Address, GetTextureDataFromGpu());
}
/// <summary>
/// Gets data from the host GPU.
/// </summary>
/// <remarks>
/// This method should be used to retrieve data that was modified by the host GPU.
/// This is not cheap, avoid doing that unless strictly needed.
/// </remarks>
/// <returns>Host texture data</returns>
private Span<byte> GetTextureDataFromGpu()
{
Span<byte> data = HostTexture.GetData();
@ -406,7 +470,7 @@ namespace Ryujinx.Graphics.Gpu.Image
data);
}
_context.PhysicalMemory.Write(Address, data);
return data;
}
/// <summary>