image = QImage(300, 300, QImage::Format_RGBA8888); image.fill(Qt::transparent); QPainter painter( ); QFont ft = painter.font(); ft.setFamily("PingFang SC"); ft.setPixelSize(13); ft.setWeight(QFont::Medium); painter.setFont(ft); // painter.setRenderHint(QPainter::Antialiasing, f...
QImage::Format_RGBA8888_Premultiplied 图像存储使用一个自左乘32位字节命令RGBA格式8-8-8-8 QImage::Format_BGR30 存储使用32位BGR格式(x-10-10-10)的的图像 QImage::Format_A2BGR30_Premultiplied 图像存储使用32位自左乘abgr格式2-10-10-10 QImage::Format_RGB30 存储使用32位RGB格式(x-10-10-10)的的...
使用Format_RGBA8888像素格式平衡性能与色彩精度 GIF编码器: 集成开源库gif.h(MIT协议)实现跨平台编码 内存流式写入技术避免临时文件产生 GifWriter gifWriter; GifBegin(&gifWriter, "output.gif", width, height, frameDelay); GifWriteFrame(&gifWriter, frame.constBits(), width, height, frameDelay); Gif...
#if (QT_VERSION <= QT_VERSION_CHECK(5,0,0)) //由于qt4没有RGBA8888,采用最接近RGBA8888的是ARGB32,颜色会有点偏差 QPixmap pix = QPixmap::grabWindow(0, x() + rectGif.x(), y() + rectGif.y(), rectGif.width(), rectGif.height()); QImage image = pix.toImage().convertToFormat(Q...
{ callbackData->thread->setRgb(width, height, data, 2); } else { #if (QT_VERSION >= QT_VERSION_CHECK(5,2,0)) QImage image(data, width, height, QImage::Format_RGBA8888); #else QImage image(data, width, height, QImage::Format_RGB32); #endif callbackData->thread->setImage(image...
const QImage negz = QImage(":/back.jpg").mirrored().convertToFormat(QImage::Format_RGBA8888); enviroment = new QOpenGLTexture(QOpenGLTexture::TargetCubeMap); enviroment->create(); enviroment->setSize(posx.width(), posx.height(), posx.depth()); ...
} void resizeGL(int w, int h) override { // 设置视口等 glViewport(0, 0, w, h); } void paintGL() override { // 清除屏幕 glClear(GL_COLOR_BUFFER_BIT); // 渲染文字到纹理 QImage image(256, 256, QImage::Format_RGBA8888); image.fill(Qt::transparent); QPainter painter(&image...
QImage image = pix.toImage().convertToFormat(QImage::Format_RGBA8888); #endif gif.GifWriteFrame(gifWriter, image.bits(), rectGif.width(), rectGif.height(), fps); count++; labStatus->setText(QString("正在录制 第 %1 帧").arg(count)); ...
QImage image = pix.toImage().convertToFormat(QImage::Format_RGBA8888); gif.GifWriteFrame(gifWriter, image.bits(), rectGif.width(), rectGif.height(), fps); } //点击开始录制时,打开定时器触发槽函数, void GifWidget::record() {
QImage image = img.convertToFormat(QImage::Format_RGBA8888); if(m_tex[texId]) glDeleteTextures(1, &m_tex[texId]); glGenTextures(1, &m_tex[texId]);// 创建纹理 glBindTexture(GL_TEXTURE_2D, m_tex[texId]); glTexImage2D(GL_TEXTURE_2D,0, GL_RGBA, ...