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 System.Runtime.CompilerServices;
using static Ryujinx.Graphics.Texture.BlockLinearConstants;
namespace Ryujinx.Graphics.Texture
{
class BlockLinearLayout
{
private struct RobAndSliceSizes
{
public int RobSize;
public int SliceSize;
public RobAndSliceSizes(int robSize, int sliceSize)
{
RobSize = robSize;
SliceSize = sliceSize;
}
}
private int _texBpp;
private int _bhMask;
private int _bdMask;
private int _bhShift;
private int _bdShift;
private int _bppShift;
private int _xShift;
private int _robSize;
private int _sliceSize;
// Variables for built in iteration.
private int _yPart;
private int _yzPart;
private int _zPart;
public BlockLinearLayout(
int width,
int height,
int gobBlocksInY,
int gobBlocksInZ,
int bpp)
{
_texBpp = bpp;
_bppShift = BitUtils.CountTrailingZeros32(bpp);
_bhMask = gobBlocksInY - 1;
_bdMask = gobBlocksInZ - 1;
_bhShift = BitUtils.CountTrailingZeros32(gobBlocksInY);
_bdShift = BitUtils.CountTrailingZeros32(gobBlocksInZ);
_xShift = BitUtils.CountTrailingZeros32(GobSize * gobBlocksInY * gobBlocksInZ);
RobAndSliceSizes rsSizes = GetRobAndSliceSizes(width, height, gobBlocksInY, gobBlocksInZ);
_robSize = rsSizes.RobSize;
_sliceSize = rsSizes.SliceSize;
}
private RobAndSliceSizes GetRobAndSliceSizes(int width, int height, int gobBlocksInY, int gobBlocksInZ)
{
int widthInGobs = BitUtils.DivRoundUp(width * _texBpp, GobStride);
int robSize = GobSize * gobBlocksInY * gobBlocksInZ * widthInGobs;
int sliceSize = BitUtils.DivRoundUp(height, gobBlocksInY * GobHeight) * robSize;
return new RobAndSliceSizes(robSize, sliceSize);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public int GetOffset(int x, int y, int z)
{
return GetOffsetWithLineOffset(x << _bppShift, y, z);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public int GetOffsetWithLineOffset(int x, int y, int z)
{
int yh = y / GobHeight;
int offset = (z >> _bdShift) * _sliceSize + (yh >> _bhShift) * _robSize;
offset += (x / GobStride) << _xShift;
offset += (yh & _bhMask) * GobSize;
offset += ((z & _bdMask) * GobSize) << _bhShift;
offset += ((x & 0x3f) >> 5) << 8;
offset += ((y & 0x07) >> 1) << 6;
offset += ((x & 0x1f) >> 4) << 5;
offset += ((y & 0x01) >> 0) << 4;
offset += ((x & 0x0f) >> 0) << 0;
return offset;
}
public (int offset, int size) GetRectangleRange(int x, int y, int width, int height)
{
// Justification:
// The 2D offset is a combination of separate x and y parts.
// Both components increase with input and never overlap bits.
// Therefore for each component, the minimum input value is the lowest that component can go.
// Minimum total value is minimum X component + minimum Y component. Similar goes for maximum.
int start = GetOffset(x, y, 0);
int end = GetOffset(x + width - 1, y + height - 1, 0) + _texBpp; // Cover the last pixel.
return (start, end - start);
}
public bool LayoutMatches(BlockLinearLayout other)
{
return _robSize == other._robSize &&
_sliceSize == other._sliceSize &&
_texBpp == other._texBpp &&
_bhMask == other._bhMask &&
_bdMask == other._bdMask;
}
// Functions for built in iteration.
// Components of the offset can be updated separately, and combined to save some time.
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void SetY(int y)
{
int yh = y / GobHeight;
int offset = (yh >> _bhShift) * _robSize;
offset += (yh & _bhMask) * GobSize;
offset += ((y & 0x07) >> 1) << 6;
offset += ((y & 0x01) >> 0) << 4;
_yPart = offset;
_yzPart = offset + _zPart;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void SetZ(int z)
{
int offset = (z >> _bdShift) * _sliceSize;
offset += ((z & _bdMask) * GobSize) << _bhShift;
_zPart = offset;
_yzPart = offset + _yPart;
}
/// <summary>
/// Optimized conversion for line offset in bytes to an absolute offset. Input x must be divisible by 16.
/// </summary>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public int GetOffsetWithLineOffset16(int x)
{
int offset = (x / GobStride) << _xShift;
offset += ((x & 0x3f) >> 5) << 8;
offset += ((x & 0x1f) >> 4) << 5;
return offset + _yzPart;
}
/// <summary>
/// Optimized conversion for line offset in bytes to an absolute offset. Input x must be divisible by 64.
/// </summary>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public int GetOffsetWithLineOffset64(int x)
{
int offset = (x / GobStride) << _xShift;
return offset + _yzPart;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public int GetOffset(int x)
{
x <<= _bppShift;
int offset = (x / GobStride) << _xShift;
offset += ((x & 0x3f) >> 5) << 8;
offset += ((x & 0x1f) >> 4) << 5;
offset += (x & 0x0f);
return offset + _yzPart;
}
}
}
|
