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
|
// Copyright (C) 2025 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "lightmapviewerhelpers.h"
#include <QtQuick3DRuntimeRender/private/qssglightmapio_p.h>
#include <QRgb>
#include <QVector>
#include <QImage>
#include <QFile>
#include <QJsonObject>
#include <QDir>
static QRgb numberToBBGRColor(quint32 i, quint32 N, bool useAlpha)
{
if (i < 1 || i > N) {
return qRgba(0, 0, 0, useAlpha ? 0 : 0xff);
}
int range = N - 1; // exclude 0
double t = static_cast<double>(i - 1) / range;
quint8 r = 0, g = 0, b = 0;
if (t < 0.5) {
// Blue -> Green
double t2 = t / 0.5; // normalize 0..1
g = 255 * t2;
b = 255 * (1.0 - t2);
} else {
// Green -> Red
double t2 = (t - 0.5) / 0.5;
r = 255 * t2;
g = 255 * (1.0 - t2);
}
return qRgba(r, g, b, 0xff);
}
QString LightmapViewerHelpers::lightmapTagToString(QSSGLightmapIODataTag tag)
{
switch (tag) {
case QSSGLightmapIODataTag::Unset:
return QStringLiteral("Unset");
break;
case QSSGLightmapIODataTag::Mask:
return QStringLiteral("Mask");
break;
case QSSGLightmapIODataTag::Texture_Final:
return QStringLiteral("Texture_Final");
break;
case QSSGLightmapIODataTag::Texture_Direct:
return QStringLiteral("Texture_Direct");
break;
case QSSGLightmapIODataTag::Texture_Indirect:
return QStringLiteral("Texture_Indirect");
break;
case QSSGLightmapIODataTag::Metadata:
return QStringLiteral("Metadata");
break;
case QSSGLightmapIODataTag::Mesh:
return QStringLiteral("Mesh");
break;
default:
break;
}
return QStringLiteral("Invalid");
}
QSSGLightmapIODataTag LightmapViewerHelpers::stringToLightmapTag(const QString &tag)
{
if (tag == QStringLiteral("Unset"))
return QSSGLightmapIODataTag::Unset;
if (tag == QStringLiteral("Mask"))
return QSSGLightmapIODataTag::Mask;
if (tag == QStringLiteral("Texture_Final"))
return QSSGLightmapIODataTag::Texture_Final;
if (tag == QStringLiteral("Texture_Direct"))
return QSSGLightmapIODataTag::Texture_Direct;
if (tag == QStringLiteral("Texture_Indirect"))
return QSSGLightmapIODataTag::Texture_Indirect;
if (tag == QStringLiteral("Metadata"))
return QSSGLightmapIODataTag::Metadata;
if (tag == QStringLiteral("Mesh"))
return QSSGLightmapIODataTag::Mesh;
if (tag == QStringLiteral("Unset"))
return QSSGLightmapIODataTag::Unset;
qWarning() << "Could not match tag for: " << tag;
return QSSGLightmapIODataTag::Unset;
}
void LightmapViewerHelpers::maskToBBGRColor(QByteArray &array, bool useAlpha)
{
QVector<quint32> uints;
uints.resize(array.size() / sizeof(quint32));
memcpy(uints.data(), array.data(), array.size());
quint32 maxN = 0;
for (quint32 v : uints) {
maxN = qMax(maxN, v);
}
for (quint32 &vRef : uints) {
vRef = numberToBBGRColor(vRef, maxN, useAlpha);
}
memcpy(array.data(), uints.data(), array.size());
}
bool LightmapViewerHelpers::processLightmap(const QString &filename, bool print, bool extract)
{
bool success = true;
QSharedPointer<QSSGLightmapLoader> loader = QSSGLightmapLoader::open(filename);
if (!loader) {
return false;
}
if (extract) {
QDir dir;
for (const char *path : { "meshes", "images", "images/masks", "images/direct", "images/indirect", "images/final" }) {
if (!dir.mkpath(path)) {
qInfo() << "Failed to create folders";
return false;
}
}
}
int numImagesSaved = 0;
int numMeshesSaved = 0;
QList<std::pair<QString, QSSGLightmapIODataTag>> keys = loader->getKeys();
if (print)
qInfo() << "-- Keys --";
QVector<QString> meshKeys;
for (const auto &[key, tag] : std::as_const(keys)) {
QString tagString = LightmapViewerHelpers::lightmapTagToString(tag);
if (print)
qInfo() << key << ":" << tagString;
if (tag == QSSGLightmapIODataTag::Mesh)
meshKeys.push_back(key);
}
if (print)
qInfo() << "-- Values --";
// Extract meshes
if (extract) {
for (const QString &key : meshKeys) {
const QByteArray meshData = loader->readData(key, QSSGLightmapIODataTag::Mesh);
QFile meshFile(QString("meshes/" + key + ".mesh"));
if (meshFile.open(QFile::WriteOnly)) {
meshFile.write(meshData);
meshFile.close();
++numMeshesSaved;
} else {
success = false;
qInfo() << key << "->" << "FAILED TO WRITE";
}
}
}
for (const auto &[key, tag] : std::as_const(keys)) {
if (tag != QSSGLightmapIODataTag::Metadata)
continue;
int width = 0;
int height = 0;
if (tag == QSSGLightmapIODataTag::Metadata) {
QVariantMap map = loader->readMetadata(key);
if (print) {
qInfo() << key << ":";
qInfo().noquote() << QJsonDocument(QJsonObject::fromVariantMap(map)).toJson(QJsonDocument::Indented).trimmed();
}
width = map[QStringLiteral("width")].toInt();
height = map[QStringLiteral("height")].toInt();
}
if (extract) {
if (keys.contains(std::make_pair(key, QSSGLightmapIODataTag::Mask))) {
QByteArray data = loader->readU32Image(key, QSSGLightmapIODataTag::Mask);
maskToBBGRColor(data);
QImage img = QImage(reinterpret_cast<uchar *>(data.data()), width, height, QImage::Format_RGBA8888);
img.save(QString("images/masks/" + key + ".png"));
++numImagesSaved;
}
for (const auto &[texTag, dir] : std::array {
std::pair { QSSGLightmapIODataTag::Texture_Direct, QStringLiteral("direct") },
std::pair { QSSGLightmapIODataTag::Texture_Indirect, QStringLiteral("indirect") },
std::pair { QSSGLightmapIODataTag::Texture_Final, QStringLiteral("final") },
}) {
if (!keys.contains(std::make_pair(key, texTag)))
continue;
QByteArray data = loader->readF32Image(key, texTag);
QImage img = QImage(reinterpret_cast<uchar *>(data.data()), width, height, QImage::Format_RGBA32FPx4);
img.save(QString("images/" + dir + "/" + key + ".png"));
++numImagesSaved;
}
}
}
if (extract) {
qInfo() << "Saved" << numImagesSaved << "images to 'images' and " << numMeshesSaved << "meshes to 'meshes'";
}
return success;
}
|
