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
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
#include "TextureLoaderPvr.h"
#include "../../Main.h"
#include <Base/Memory.h>
using namespace Death::IO;
using namespace Death::Memory;
namespace nCine
{
TextureLoaderPvr::TextureLoaderPvr(std::unique_ptr<Stream> fileHandle)
: ITextureLoader(std::move(fileHandle))
{
Pvr3Header header;
if (!fileHandle_->IsValid()) {
return;
}
const bool headerRead = readHeader(header);
DEATH_ASSERT(headerRead, "PVR header cannot be read", );
const bool formatParsed = parseFormat(header);
DEATH_ASSERT(formatParsed, "PVR format cannot be parsed", );
hasLoaded_ = true;
}
bool TextureLoaderPvr::readHeader(Pvr3Header& header)
{
// PVR3 header is 52 bytes long
fileHandle_->Read(&header, 52);
// Checking for the header presence ("PVR"03)
DEATH_ASSERT(AsLE(header.version) == 0x03525650, "Invalid PVR3 signature", false);
headerSize_ = 52 + AsLE(header.metaDataSize);
width_ = AsLE(header.width);
height_ = AsLE(header.height);
mipMapCount_ = header.numMipmaps;
if (mipMapCount_ == 0) {
mipMapCount_ = 1;
}
return true;
}
bool TextureLoaderPvr::parseFormat(const Pvr3Header& header)
{
GLenum internalFormat = GL_RGB8; // to suppress uninitialized variable warning
uint64_t pixelFormat = AsLE(header.pixelFormat);
// Texture contains compressed data, most significant 4 bytes have been set to zero
if (pixelFormat < 0x0000000100000000ULL) {
LOGI("Compressed format: {}", pixelFormat);
// Parsing the pixel format
switch (pixelFormat) {
case FMT_DXT1:
internalFormat = GL_COMPRESSED_RGB_S3TC_DXT1_EXT;
break;
case FMT_DXT3:
internalFormat = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
break;
case FMT_DXT5:
internalFormat = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
break;
#if defined(WITH_OPENGLES)
case FMT_ETC1:
internalFormat = GL_ETC1_RGB8_OES;
break;
case FMT_PVRTC_2BPP_RGB:
internalFormat = GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG;
break;
case FMT_PVRTC_2BPP_RGBA:
internalFormat = GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;
break;
case FMT_PVRTC_4BPP_RGB:
internalFormat = GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG;
break;
case FMT_PVRTC_4BPP_RGBA:
internalFormat = GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;
break;
case FMT_PVRTCII_2BPP:
case FMT_PVRTCII_4BPP:
LOGF("No support for PVRTC-II compression");
break;
case FMT_ETC2_RGB:
internalFormat = GL_COMPRESSED_RGB8_ETC2;
break;
case FMT_ETC2_RGBA:
internalFormat = GL_COMPRESSED_RGBA8_ETC2_EAC;
break;
case FMT_ETC2_RGB_A1:
internalFormat = GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2;
break;
case FMT_EAC_R11:
internalFormat = GL_COMPRESSED_R11_EAC;
break;
case FMT_EAC_RG11:
internalFormat = GL_COMPRESSED_RG11_EAC;
break;
# if (!defined(DEATH_TARGET_ANDROID) && defined(WITH_OPENGLES)) || (defined(DEATH_TARGET_ANDROID) && __ANDROID_API__ >= 21)
case FMT_ASTC_4x4:
internalFormat = GL_COMPRESSED_RGBA_ASTC_4x4_KHR;
break;
case FMT_ASTC_5x4:
internalFormat = GL_COMPRESSED_RGBA_ASTC_5x4_KHR;
break;
case FMT_ASTC_5x5:
internalFormat = GL_COMPRESSED_RGBA_ASTC_5x5_KHR;
break;
case FMT_ASTC_6x5:
internalFormat = GL_COMPRESSED_RGBA_ASTC_6x5_KHR;
break;
case FMT_ASTC_6x6:
internalFormat = GL_COMPRESSED_RGBA_ASTC_6x6_KHR;
break;
case FMT_ASTC_8x5:
internalFormat = GL_COMPRESSED_RGBA_ASTC_8x5_KHR;
break;
case FMT_ASTC_8x6:
internalFormat = GL_COMPRESSED_RGBA_ASTC_8x6_KHR;
break;
case FMT_ASTC_8x8:
internalFormat = GL_COMPRESSED_RGBA_ASTC_8x8_KHR;
break;
case FMT_ASTC_10x5:
internalFormat = GL_COMPRESSED_RGBA_ASTC_10x5_KHR;
break;
case FMT_ASTC_10x6:
internalFormat = GL_COMPRESSED_RGBA_ASTC_10x6_KHR;
break;
case FMT_ASTC_10x8:
internalFormat = GL_COMPRESSED_RGBA_ASTC_10x8_KHR;
break;
case FMT_ASTC_10x10:
internalFormat = GL_COMPRESSED_RGBA_ASTC_10x10_KHR;
break;
case FMT_ASTC_12x10:
internalFormat = GL_COMPRESSED_RGBA_ASTC_12x10_KHR;
break;
case FMT_ASTC_12x12:
internalFormat = GL_COMPRESSED_RGBA_ASTC_12x12_KHR;
break;
# endif
#endif
default:
LOGE("Unsupported PVR3 compressed format: 0x{:x}", pixelFormat);
return false;
}
loadPixels(internalFormat);
} else {
// Texture contains uncompressed data
GLenum type = GL_UNSIGNED_BYTE;
LOGI("Uncompressed format: {:c}{:c}{:c}{:c} ({}, {}, {}, {})",
reinterpret_cast<char*>(&pixelFormat)[0], reinterpret_cast<char*>(&pixelFormat)[1],
reinterpret_cast<char*>(&pixelFormat)[2], reinterpret_cast<char*>(&pixelFormat)[3],
reinterpret_cast<unsigned char*>(&pixelFormat)[4], reinterpret_cast<unsigned char*>(&pixelFormat)[5],
reinterpret_cast<unsigned char*>(&pixelFormat)[6], reinterpret_cast<unsigned char*>(&pixelFormat)[7]);
switch (pixelFormat) {
case FMT_BGRA_8888:
#if !defined(WITH_OPENGLES)
internalFormat = GL_BGRA;
#else
internalFormat = GL_BGRA_EXT;
#endif
break;
case FMT_RGBA_8888:
internalFormat = GL_RGBA8;
break;
case FMT_RGB_888:
internalFormat = GL_RGB8;
break;
case FMT_RGB_565:
internalFormat = GL_RGB565;
type = GL_UNSIGNED_SHORT_5_6_5;
break;
case FMT_RGBA_5551:
internalFormat = GL_RGB5_A1;
type = GL_UNSIGNED_SHORT_5_5_5_1;
break;
case FMT_RGBA_4444:
internalFormat = GL_RGBA4;
type = GL_UNSIGNED_SHORT_4_4_4_4;
break;
case FMT_LA_88:
internalFormat = GL_RG8;
break;
case FMT_L_8:
internalFormat = GL_R8;
break;
case FMT_A_8:
internalFormat = GL_R8;
break;
default:
LOGE("Unsupported PVR3 uncompressed format: 0x{:x}", pixelFormat);
return false;
}
loadPixels(internalFormat, type);
}
if (mipMapCount_ > 1) {
LOGI("MIP Maps: {}", mipMapCount_);
mipDataOffsets_ = std::make_unique<std::uint32_t[]>(mipMapCount_);
mipDataSizes_ = std::make_unique<std::uint32_t[]>(mipMapCount_);
std::uint32_t dataSizesSum = TextureFormat::calculateMipSizes(internalFormat, width_, height_, mipMapCount_, mipDataOffsets_.get(), mipDataSizes_.get());
if (dataSizesSum != dataSize_) {
LOGW("The sum of MIP maps size ({}) is different than texture total data ({})", dataSizesSum, dataSize_);
}
}
return true;
}
}
|
