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
|
// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <cstring>
#include "common/assert.h"
#include "core/memory.h"
#include "video_core/gpu.h"
#include "video_core/textures/decoders.h"
#include "video_core/textures/texture.h"
namespace Tegra {
namespace Texture {
/**
* Calculates the offset of an (x, y) position within a swizzled texture.
* Taken from the Tegra X1 TRM.
*/
static u32 GetSwizzleOffset(u32 x, u32 y, u32 image_width, u32 bytes_per_pixel, u32 block_height) {
u32 image_width_in_gobs = image_width * bytes_per_pixel / 64;
u32 GOB_address = 0 + (y / (8 * block_height)) * 512 * block_height * image_width_in_gobs +
(x * bytes_per_pixel / 64) * 512 * block_height +
(y % (8 * block_height) / 8) * 512;
x *= bytes_per_pixel;
u32 address = GOB_address + ((x % 64) / 32) * 256 + ((y % 8) / 2) * 64 + ((x % 32) / 16) * 32 +
(y % 2) * 16 + (x % 16);
return address;
}
void CopySwizzledData(u32 width, u32 height, u32 bytes_per_pixel, u32 out_bytes_per_pixel,
u8* swizzled_data, u8* unswizzled_data, bool unswizzle, u32 block_height) {
u8* data_ptrs[2];
for (unsigned y = 0; y < height; ++y) {
for (unsigned x = 0; x < width; ++x) {
u32 swizzle_offset = GetSwizzleOffset(x, y, width, bytes_per_pixel, block_height);
u32 pixel_index = (x + y * width) * out_bytes_per_pixel;
data_ptrs[unswizzle] = swizzled_data + swizzle_offset;
data_ptrs[!unswizzle] = &unswizzled_data[pixel_index];
std::memcpy(data_ptrs[0], data_ptrs[1], bytes_per_pixel);
}
}
}
u32 BytesPerPixel(TextureFormat format) {
switch (format) {
case TextureFormat::DXT1:
case TextureFormat::DXN1:
// In this case a 'pixel' actually refers to a 4x4 tile.
return 8;
case TextureFormat::DXT23:
case TextureFormat::DXT45:
// In this case a 'pixel' actually refers to a 4x4 tile.
return 16;
case TextureFormat::ASTC_2D_4X4:
case TextureFormat::A8R8G8B8:
case TextureFormat::A2B10G10R10:
case TextureFormat::BF10GF11RF11:
return 4;
case TextureFormat::A1B5G5R5:
case TextureFormat::B5G6R5:
return 2;
case TextureFormat::R8:
return 1;
case TextureFormat::R16_G16_B16_A16:
return 8;
case TextureFormat::R32_G32_B32_A32:
return 16;
default:
UNIMPLEMENTED_MSG("Format not implemented");
break;
}
}
static u32 DepthBytesPerPixel(DepthFormat format) {
switch (format) {
case DepthFormat::S8_Z24_UNORM:
case DepthFormat::Z24_S8_UNORM:
case DepthFormat::Z32_FLOAT:
return 4;
default:
UNIMPLEMENTED_MSG("Format not implemented");
break;
}
}
std::vector<u8> UnswizzleTexture(VAddr address, TextureFormat format, u32 width, u32 height,
u32 block_height) {
u8* data = Memory::GetPointer(address);
u32 bytes_per_pixel = BytesPerPixel(format);
std::vector<u8> unswizzled_data(width * height * bytes_per_pixel);
switch (format) {
case TextureFormat::DXT1:
case TextureFormat::DXT23:
case TextureFormat::DXT45:
case TextureFormat::DXN1:
// In the DXT and DXN formats, each 4x4 tile is swizzled instead of just individual pixel
// values.
CopySwizzledData(width / 4, height / 4, bytes_per_pixel, bytes_per_pixel, data,
unswizzled_data.data(), true, block_height);
break;
case TextureFormat::A8R8G8B8:
case TextureFormat::A2B10G10R10:
case TextureFormat::A1B5G5R5:
case TextureFormat::B5G6R5:
case TextureFormat::R8:
case TextureFormat::R16_G16_B16_A16:
case TextureFormat::R32_G32_B32_A32:
case TextureFormat::BF10GF11RF11:
case TextureFormat::ASTC_2D_4X4:
CopySwizzledData(width, height, bytes_per_pixel, bytes_per_pixel, data,
unswizzled_data.data(), true, block_height);
break;
default:
UNIMPLEMENTED_MSG("Format not implemented");
break;
}
return unswizzled_data;
}
std::vector<u8> UnswizzleDepthTexture(VAddr address, DepthFormat format, u32 width, u32 height,
u32 block_height) {
u8* data = Memory::GetPointer(address);
u32 bytes_per_pixel = DepthBytesPerPixel(format);
std::vector<u8> unswizzled_data(width * height * bytes_per_pixel);
switch (format) {
case DepthFormat::S8_Z24_UNORM:
case DepthFormat::Z24_S8_UNORM:
case DepthFormat::Z32_FLOAT:
CopySwizzledData(width, height, bytes_per_pixel, bytes_per_pixel, data,
unswizzled_data.data(), true, block_height);
break;
default:
UNIMPLEMENTED_MSG("Format not implemented");
break;
}
return unswizzled_data;
}
std::vector<u8> DecodeTexture(const std::vector<u8>& texture_data, TextureFormat format, u32 width,
u32 height) {
std::vector<u8> rgba_data;
// TODO(Subv): Implement.
switch (format) {
case TextureFormat::DXT1:
case TextureFormat::DXT23:
case TextureFormat::DXT45:
case TextureFormat::DXN1:
case TextureFormat::ASTC_2D_4X4:
case TextureFormat::A8R8G8B8:
case TextureFormat::A2B10G10R10:
case TextureFormat::A1B5G5R5:
case TextureFormat::B5G6R5:
case TextureFormat::R8:
case TextureFormat::BF10GF11RF11:
case TextureFormat::R32_G32_B32_A32:
// TODO(Subv): For the time being just forward the same data without any decoding.
rgba_data = texture_data;
break;
default:
UNIMPLEMENTED_MSG("Format not implemented");
break;
}
return rgba_data;
}
} // namespace Texture
} // namespace Tegra
|
