Ryujinx/Ryujinx.Graphics.Vulkan/IndexBufferState.cs
riperiperi 0dbe45ae37
Fix various issues caused by Vertex/Index buffer conversions (#3762)
* Fix various issues caused by #3679

- The arguments for the 0th dummy vertex buffer were incorrect - it was given an offset of 16 rather than a size of 16.
- The wrong size was used when doing `autoBuffer.Get` on a converted vertex buffer.
- The possibility of a vertex buffer being disposed and then rebound can rebindings to find a different buffer where the current range is out of bounds. Avoid binding when out of range to prevent validation errors.
- The above also affects generation of converted buffers, which was a bit more fatal. Conversion functions now attempt to bound input offset/size.

* Fix offset for converted buffer
2022-10-16 19:38:58 -03:00

102 lines
3.1 KiB
C#

using Silk.NET.Vulkan;
using System;
namespace Ryujinx.Graphics.Vulkan
{
internal struct IndexBufferState
{
public static IndexBufferState Null => new IndexBufferState(GAL.BufferHandle.Null, 0, 0);
private readonly int _offset;
private readonly int _size;
private readonly IndexType _type;
private readonly GAL.BufferHandle _handle;
private Auto<DisposableBuffer> _buffer;
public IndexBufferState(GAL.BufferHandle handle, int offset, int size, IndexType type)
{
_handle = handle;
_offset = offset;
_size = size;
_type = type;
_buffer = null;
}
public IndexBufferState(GAL.BufferHandle handle, int offset, int size)
{
_handle = handle;
_offset = offset;
_size = size;
_type = IndexType.Uint16;
_buffer = null;
}
public void BindIndexBuffer(VulkanRenderer gd, CommandBufferScoped cbs)
{
Auto<DisposableBuffer> autoBuffer;
int offset, size;
IndexType type = _type;
if (_type == IndexType.Uint8Ext && !gd.Capabilities.SupportsIndexTypeUint8)
{
// Index type is not supported. Convert to I16.
autoBuffer = gd.BufferManager.GetBufferI8ToI16(cbs, _handle, _offset, _size);
type = IndexType.Uint16;
offset = 0;
size = _size * 2;
}
else
{
autoBuffer = gd.BufferManager.GetBuffer(cbs.CommandBuffer, _handle, false, out int bufferSize);
if (_offset >= bufferSize)
{
autoBuffer = null;
}
offset = _offset;
size = _size;
}
_buffer = autoBuffer;
if (autoBuffer != null)
{
gd.Api.CmdBindIndexBuffer(cbs.CommandBuffer, autoBuffer.Get(cbs, offset, size).Value, (ulong)offset, type);
}
}
public void BindConvertedIndexBuffer(VulkanRenderer gd, CommandBufferScoped cbs, int firstIndex, int indexCount, int convertedCount, IndexBufferPattern pattern)
{
Auto<DisposableBuffer> autoBuffer;
// Convert the index buffer using the given pattern.
int indexSize = _type switch
{
IndexType.Uint32 => 4,
IndexType.Uint16 => 2,
_ => 1,
};
int firstIndexOffset = firstIndex * indexSize;
autoBuffer = gd.BufferManager.GetBufferTopologyConversion(cbs, _handle, _offset + firstIndexOffset, indexCount * indexSize, pattern, indexSize);
int size = convertedCount * 4;
_buffer = autoBuffer;
if (autoBuffer != null)
{
gd.Api.CmdBindIndexBuffer(cbs.CommandBuffer, autoBuffer.Get(cbs, 0, size).Value, 0, IndexType.Uint32);
}
}
public bool BoundEquals(Auto<DisposableBuffer> buffer)
{
return _buffer == buffer;
}
}
}