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39 | |
40 | #include "qsgcompressedatlastexture_p.h" |
41 | |
42 | #include <QtCore/QVarLengthArray> |
43 | #include <QtCore/QElapsedTimer> |
44 | #include <QtCore/QtMath> |
45 | |
46 | #include <QtGui/QOpenGLContext> |
47 | #include <QtGui/QGuiApplication> |
48 | #include <QtGui/QScreen> |
49 | #include <QtGui/QSurface> |
50 | #include <QtGui/QWindow> |
51 | #include <QtGui/QOpenGLFunctions> |
52 | #include <QtGui/QOpenGLTexture> |
53 | #include <QDebug> |
54 | |
55 | #include <private/qqmlglobal_p.h> |
56 | #include <private/qquickprofiler_p.h> |
57 | #include <private/qsgtexture_p.h> |
58 | #include <private/qsgcompressedtexture_p.h> |
59 | |
60 | QT_BEGIN_NAMESPACE |
61 | |
62 | static QElapsedTimer qsg_renderer_timer; |
63 | |
64 | namespace QSGCompressedAtlasTexture |
65 | { |
66 | |
67 | Atlas::Atlas(const QSize &size, uint format) |
68 | : QSGOpenGLAtlasTexture::AtlasBase(size) |
69 | , m_format(format) |
70 | { |
71 | } |
72 | |
73 | Atlas::~Atlas() |
74 | { |
75 | } |
76 | |
77 | Texture *Atlas::create(const QByteArray &data, int dataLength, int dataOffset, const QSize &size, const QSize &paddedSize) |
78 | { |
79 | // No need to lock, as manager already locked it. |
80 | QRect rect = m_allocator.allocate(size: paddedSize); |
81 | if (rect.width() > 0 && rect.height() > 0) { |
82 | Texture *t = new Texture(this, rect, data, dataLength, dataOffset, size); |
83 | m_pending_uploads << t; |
84 | return t; |
85 | } |
86 | return nullptr; |
87 | } |
88 | |
89 | void Atlas::generateTexture() |
90 | { |
91 | int bytesPerBlock = 8; |
92 | switch (m_format) { |
93 | case QOpenGLTexture::RGBA8_ETC2_EAC: |
94 | case QOpenGLTexture::RGBA_DXT3: |
95 | case QOpenGLTexture::RGBA_DXT5: |
96 | bytesPerBlock = 16; |
97 | default: |
98 | break; |
99 | } |
100 | |
101 | QOpenGLFunctions *funcs = QOpenGLContext::currentContext()->functions(); |
102 | funcs->glCompressedTexImage2D(GL_TEXTURE_2D, level: 0, internalformat: m_format, |
103 | width: m_size.width(), height: m_size.height(), border: 0, |
104 | imageSize: (m_size.width() / 4 * m_size.height() / 4) * bytesPerBlock, |
105 | data: nullptr); |
106 | } |
107 | |
108 | void Atlas::uploadPendingTexture(int i) |
109 | { |
110 | Texture *texture = static_cast<Texture*>(m_pending_uploads.at(i)); |
111 | |
112 | const QRect &r = texture->atlasSubRect(); |
113 | |
114 | QOpenGLFunctions *funcs = QOpenGLContext::currentContext()->functions(); |
115 | funcs->glCompressedTexSubImage2D(GL_TEXTURE_2D, level: 0, |
116 | xoffset: r.x(), yoffset: r.y(), width: r.width(), height: r.height(), format: m_format, |
117 | imageSize: texture->sizeInBytes(), |
118 | data: texture->data().constData() + texture->dataOffset()); |
119 | |
120 | qCDebug(QSG_LOG_TIME_TEXTURE).nospace() << "compressed atlastexture uploaded in: " << qsg_renderer_timer.elapsed() |
121 | << "ms (" << texture->textureSize().width() << "x" |
122 | << texture->textureSize().height() << ")" ; |
123 | |
124 | // TODO: consider releasing the data (as is done in the regular atlas)? |
125 | // The advantage of keeping this data around is that it makes it much easier |
126 | // to remove the texture from the atlas |
127 | } |
128 | |
129 | Texture::Texture(Atlas *atlas, const QRect &textureRect, const QByteArray &data, int dataLength, int dataOffset, const QSize &size) |
130 | : QSGOpenGLAtlasTexture::TextureBase(atlas, textureRect) |
131 | , m_nonatlas_texture(nullptr) |
132 | , m_data(data) |
133 | , m_size(size) |
134 | , m_dataLength(dataLength) |
135 | , m_dataOffset(dataOffset) |
136 | { |
137 | float w = atlas->size().width(); |
138 | float h = atlas->size().height(); |
139 | const QRect &r = atlasSubRect(); |
140 | // offset by half-pixel to prevent bleeding when scaling |
141 | m_texture_coords_rect = QRectF((r.x() + .5) / w, |
142 | (r.y() + .5) / h, |
143 | (size.width() - 1.) / w, |
144 | (size.height() - 1.) / h); |
145 | } |
146 | |
147 | Texture::~Texture() |
148 | { |
149 | delete m_nonatlas_texture; |
150 | } |
151 | |
152 | bool Texture::hasAlphaChannel() const |
153 | { |
154 | return !QSGCompressedTexture::formatIsOpaque(glTextureFormat: static_cast<Atlas*>(m_atlas)->format()); |
155 | } |
156 | |
157 | QSGTexture *Texture::removedFromAtlas() const |
158 | { |
159 | if (m_nonatlas_texture) { |
160 | m_nonatlas_texture->setMipmapFiltering(mipmapFiltering()); |
161 | m_nonatlas_texture->setFiltering(filtering()); |
162 | return m_nonatlas_texture; |
163 | } |
164 | |
165 | if (!m_data.isEmpty()) { |
166 | QTextureFileData texData; |
167 | texData.setData(m_data); |
168 | texData.setSize(m_size); |
169 | texData.setGLInternalFormat(static_cast<Atlas*>(m_atlas)->format()); |
170 | texData.setDataLength(length: m_dataLength); |
171 | texData.setDataOffset(offset: m_dataOffset); |
172 | m_nonatlas_texture = new QSGCompressedTexture(texData); |
173 | m_nonatlas_texture->setMipmapFiltering(mipmapFiltering()); |
174 | m_nonatlas_texture->setFiltering(filtering()); |
175 | } |
176 | |
177 | return m_nonatlas_texture; |
178 | } |
179 | |
180 | } |
181 | |
182 | QT_END_NAMESPACE |
183 | |