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
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
using Ryujinx.Common;
using Ryujinx.Graphics.GAL;
using System;
using System.Runtime.InteropServices;
namespace Ryujinx.Graphics.Gpu.Engine.Threed
{
/// <summary>
/// Holds inline index buffer state.
/// The inline index buffer data is sent to the GPU through the command buffer.
/// </summary>
struct IbStreamer
{
private const int BufferCapacity = 256; // Must be a power of 2.
private BufferHandle _inlineIndexBuffer;
private int _inlineIndexBufferSize;
private int _inlineIndexCount;
private uint[] _buffer;
private int _bufferOffset;
/// <summary>
/// Indicates if any index buffer data has been pushed.
/// </summary>
public bool HasInlineIndexData => _inlineIndexCount != 0;
/// <summary>
/// Total numbers of indices that have been pushed.
/// </summary>
public int InlineIndexCount => _inlineIndexCount;
/// <summary>
/// Gets the handle for the host buffer currently holding the inline index buffer data.
/// </summary>
/// <returns>Host buffer handle</returns>
public BufferHandle GetInlineIndexBuffer()
{
return _inlineIndexBuffer;
}
/// <summary>
/// Gets the number of elements on the current inline index buffer,
/// while also reseting it to zero for the next draw.
/// </summary>
/// <param name="renderer">Host renderer</param>
/// <returns>Inline index bufffer count</returns>
public int GetAndResetInlineIndexCount(IRenderer renderer)
{
UpdateRemaining(renderer);
int temp = _inlineIndexCount;
_inlineIndexCount = 0;
return temp;
}
/// <summary>
/// Pushes four 8-bit index buffer elements.
/// </summary>
/// <param name="renderer">Host renderer</param>
/// <param name="argument">Method call argument</param>
public void VbElementU8(IRenderer renderer, int argument)
{
byte i0 = (byte)argument;
byte i1 = (byte)(argument >> 8);
byte i2 = (byte)(argument >> 16);
byte i3 = (byte)(argument >> 24);
int offset = _inlineIndexCount;
PushData(renderer, offset, i0);
PushData(renderer, offset + 1, i1);
PushData(renderer, offset + 2, i2);
PushData(renderer, offset + 3, i3);
_inlineIndexCount += 4;
}
/// <summary>
/// Pushes two 16-bit index buffer elements.
/// </summary>
/// <param name="renderer">Host renderer</param>
/// <param name="argument">Method call argument</param>
public void VbElementU16(IRenderer renderer, int argument)
{
ushort i0 = (ushort)argument;
ushort i1 = (ushort)(argument >> 16);
int offset = _inlineIndexCount;
PushData(renderer, offset, i0);
PushData(renderer, offset + 1, i1);
_inlineIndexCount += 2;
}
/// <summary>
/// Pushes one 32-bit index buffer element.
/// </summary>
/// <param name="renderer">Host renderer</param>
/// <param name="argument">Method call argument</param>
public void VbElementU32(IRenderer renderer, int argument)
{
uint i0 = (uint)argument;
int offset = _inlineIndexCount++;
PushData(renderer, offset, i0);
}
/// <summary>
/// Pushes a 32-bit value to the index buffer.
/// </summary>
/// <param name="renderer">Host renderer</param>
/// <param name="offset">Offset where the data should be written, in 32-bit words</param>
/// <param name="value">Index value to be written</param>
private void PushData(IRenderer renderer, int offset, uint value)
{
if (_buffer == null)
{
_buffer = new uint[BufferCapacity];
}
// We upload data in chunks.
// If we are at the start of a chunk, then the buffer might be full,
// in that case we need to submit any existing data before overwriting the buffer.
int subOffset = offset & (BufferCapacity - 1);
if (subOffset == 0 && offset != 0)
{
int baseOffset = (offset - BufferCapacity) * sizeof(uint);
BufferHandle buffer = GetInlineIndexBuffer(renderer, baseOffset, BufferCapacity * sizeof(uint));
renderer.SetBufferData(buffer, baseOffset, MemoryMarshal.Cast<uint, byte>(_buffer));
}
_buffer[subOffset] = value;
}
/// <summary>
/// Makes sure that any pending data is submitted to the GPU before the index buffer is used.
/// </summary>
/// <param name="renderer">Host renderer</param>
private void UpdateRemaining(IRenderer renderer)
{
int offset = _inlineIndexCount;
if (offset == 0)
{
return;
}
int count = offset & (BufferCapacity - 1);
if (count == 0)
{
count = BufferCapacity;
}
int baseOffset = (offset - count) * sizeof(uint);
int length = count * sizeof(uint);
BufferHandle buffer = GetInlineIndexBuffer(renderer, baseOffset, length);
renderer.SetBufferData(buffer, baseOffset, MemoryMarshal.Cast<uint, byte>(_buffer).Slice(0, length));
}
/// <summary>
/// Gets the handle of a buffer large enough to hold the data that will be written to <paramref name="offset"/>.
/// </summary>
/// <param name="renderer">Host renderer</param>
/// <param name="offset">Offset where the data will be written</param>
/// <param name="length">Number of bytes that will be written</param>
/// <returns>Buffer handle</returns>
private BufferHandle GetInlineIndexBuffer(IRenderer renderer, int offset, int length)
{
// Calculate a reasonable size for the buffer that can fit all the data,
// and that also won't require frequent resizes if we need to push more data.
int size = BitUtils.AlignUp(offset + length + 0x10, 0x200);
if (_inlineIndexBuffer == BufferHandle.Null)
{
_inlineIndexBuffer = renderer.CreateBuffer(size);
_inlineIndexBufferSize = size;
}
else if (_inlineIndexBufferSize < size)
{
BufferHandle oldBuffer = _inlineIndexBuffer;
int oldSize = _inlineIndexBufferSize;
_inlineIndexBuffer = renderer.CreateBuffer(size);
_inlineIndexBufferSize = size;
renderer.Pipeline.CopyBuffer(oldBuffer, _inlineIndexBuffer, 0, 0, oldSize);
renderer.DeleteBuffer(oldBuffer);
}
return _inlineIndexBuffer;
}
}
}
|
