1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
using Ryujinx.Graphics.GAL;
using Ryujinx.Graphics.Shader;
using System;
namespace Ryujinx.Graphics.Gpu.Memory
{
/// <summary>
/// Buffer data updater.
/// </summary>
class BufferUpdater : IDisposable
{
private BufferHandle _handle;
/// <summary>
/// Handle of the buffer.
/// </summary>
public BufferHandle Handle => _handle;
private readonly IRenderer _renderer;
private int _startOffset = -1;
private int _endOffset = -1;
/// <summary>
/// Creates a new instance of the buffer updater.
/// </summary>
/// <param name="renderer">Renderer that the buffer will be used with</param>
public BufferUpdater(IRenderer renderer)
{
_renderer = renderer;
}
/// <summary>
/// Mark a region of the buffer as modified and needing to be sent to the GPU.
/// </summary>
/// <param name="startOffset">Start offset of the region in bytes</param>
/// <param name="byteSize">Size of the region in bytes</param>
protected void MarkDirty(int startOffset, int byteSize)
{
int endOffset = startOffset + byteSize;
if (_startOffset == -1)
{
_startOffset = startOffset;
_endOffset = endOffset;
}
else
{
if (startOffset < _startOffset)
{
_startOffset = startOffset;
}
if (endOffset > _endOffset)
{
_endOffset = endOffset;
}
}
}
/// <summary>
/// Submits all pending buffer updates to the GPU.
/// </summary>
/// <param name="data">All data that should be sent to the GPU. Only the modified regions will be updated</param>
/// <param name="binding">Optional binding to bind the buffer if a new buffer was created</param>
protected void Commit(ReadOnlySpan<byte> data, int binding = -1)
{
if (_startOffset != -1)
{
if (_handle == BufferHandle.Null)
{
_handle = _renderer.CreateBuffer(data.Length, BufferAccess.Stream);
_renderer.Pipeline.ClearBuffer(_handle, 0, data.Length, 0);
if (binding >= 0)
{
var range = new BufferRange(_handle, 0, data.Length);
_renderer.Pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(0, range) });
}
};
_renderer.SetBufferData(_handle, _startOffset, data[_startOffset.._endOffset]);
_startOffset = -1;
_endOffset = -1;
}
}
/// <summary>
/// Gets a reference to a given element of a vector.
/// </summary>
/// <param name="vector">Vector to get the element reference from</param>
/// <param name="elementIndex">Element index</param>
/// <returns>Reference to the specified element</returns>
protected static ref T GetElementRef<T>(ref Vector4<T> vector, int elementIndex)
{
switch (elementIndex)
{
case 0:
return ref vector.X;
case 1:
return ref vector.Y;
case 2:
return ref vector.Z;
case 3:
return ref vector.W;
default:
throw new ArgumentOutOfRangeException(nameof(elementIndex));
}
}
/// <summary>
/// Destroys the buffer.
/// </summary>
public void Dispose()
{
if (_handle != BufferHandle.Null)
{
_renderer.DeleteBuffer(_handle);
_handle = BufferHandle.Null;
}
}
}
}
|
