diff options
Diffstat (limited to 'src/opengl/qgl.cpp')
| -rw-r--r-- | src/opengl/qgl.cpp | 58 |
1 files changed, 41 insertions, 17 deletions
diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp index b6f8919..466e851 100644 --- a/src/opengl/qgl.cpp +++ b/src/opengl/qgl.cpp @@ -2063,6 +2063,29 @@ QGLTexture *QGLContextPrivate::bindTexture(const QImage &image, GLenum target, G // #define QGL_BIND_TEXTURE_DEBUG +// map from Qt's ARGB endianness-dependent format to GL's big-endian RGBA layout +static inline void qgl_byteSwapImage(QImage &img, GLenum pixel_type) +{ + const int width = img.width(); + const int height = img.height(); + + if (pixel_type == GL_UNSIGNED_INT_8_8_8_8_REV + || (pixel_type == GL_UNSIGNED_BYTE && QSysInfo::ByteOrder == QSysInfo::LittleEndian)) + { + for (int i = 0; i < height; ++i) { + uint *p = (uint *) img.scanLine(i); + for (int x = 0; x < width; ++x) + p[x] = ((p[x] << 16) & 0xff0000) | ((p[x] >> 16) & 0xff) | (p[x] & 0xff00ff00); + } + } else { + for (int i = 0; i < height; ++i) { + uint *p = (uint *) img.scanLine(i); + for (int x = 0; x < width; ++x) + p[x] = (p[x] << 8) | ((p[x] >> 24) & 0xff); + } + } +} + QGLTexture* QGLContextPrivate::bindTexture(const QImage &image, GLenum target, GLint internalFormat, const qint64 key, QGLContext::BindOptions options) { @@ -2215,23 +2238,7 @@ QGLTexture* QGLContextPrivate::bindTexture(const QImage &image, GLenum target, G // 32 in the switch above is for the RGB16 case, where we set // the format to GL_RGB Q_ASSERT(img.depth() == 32); - const int width = img.width(); - const int height = img.height(); - - if (pixel_type == GL_UNSIGNED_INT_8_8_8_8_REV - || (pixel_type == GL_UNSIGNED_BYTE && QSysInfo::ByteOrder == QSysInfo::LittleEndian)) { - for (int i=0; i < height; ++i) { - uint *p = (uint *) img.scanLine(i); - for (int x=0; x<width; ++x) - p[x] = ((p[x] << 16) & 0xff0000) | ((p[x] >> 16) & 0xff) | (p[x] & 0xff00ff00); - } - } else { - for (int i=0; i < height; ++i) { - uint *p = (uint *) img.scanLine(i); - for (int x=0; x<width; ++x) - p[x] = (p[x] << 8) | ((p[x] >> 24) & 0xff); - } - } + qgl_byteSwapImage(img, pixel_type); } #ifdef QT_OPENGL_ES // OpenGL/ES requires that the internal and external formats be identical. @@ -3803,6 +3810,11 @@ bool QGLWidget::event(QEvent *e) } #if defined(QT_OPENGL_ES) + // A re-parent is likely to destroy the X11 window and re-create it. It is important + // that we free the EGL surface _before_ the winID changes - otherwise we can leak. + if (e->type() == QEvent::ParentAboutToChange) + d->glcx->d_func()->destroyEglSurfaceForDevice(); + if ((e->type() == QEvent::ParentChange) || (e->type() == QEvent::WindowStateChange)) { // The window may have been re-created during re-parent or state change - if so, the EGL // surface will need to be re-created. @@ -4290,6 +4302,7 @@ static void qt_save_gl_state() glDisable(GL_CULL_FACE); glDisable(GL_LIGHTING); glDisable(GL_STENCIL_TEST); + glDisable(GL_DEPTH_TEST); glEnable(GL_BLEND); glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA); } @@ -4343,6 +4356,10 @@ static void qt_gl_draw_text(QPainter *p, int x, int y, const QString &str, \note This function clears the stencil buffer. \note This function is not supported on OpenGL/ES systems. + + \note This function temporarily disables depth-testing when the + text is drawn. + \l{Overpainting Example}{Overpaint} with QPainter::drawText() instead. */ @@ -4433,6 +4450,13 @@ void QGLWidget::renderText(int x, int y, const QString &str, const QFont &font, have the labels move with the model as it is rotated etc. \note This function is not supported on OpenGL/ES systems. + + \note If depth testing is enabled before this function is called, + then the drawn text will be depth-tested against the models that + have already been drawn in the scene. Use \c{glDisable(GL_DEPTH_TEST)} + before calling this function to annotate the models without + depth-testing the text. + \l{Overpainting Example}{Overpaint} with QPainter::drawText() instead. */ void QGLWidget::renderText(double x, double y, double z, const QString &str, const QFont &font, int) |