diff options
Diffstat (limited to 'src/platformsupport/eglconvenience/qeglconvenience.cpp')
| -rw-r--r-- | src/platformsupport/eglconvenience/qeglconvenience.cpp | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/platformsupport/eglconvenience/qeglconvenience.cpp b/src/platformsupport/eglconvenience/qeglconvenience.cpp index 32f553a3f5..e561a6bc55 100644 --- a/src/platformsupport/eglconvenience/qeglconvenience.cpp +++ b/src/platformsupport/eglconvenience/qeglconvenience.cpp @@ -41,6 +41,12 @@ #include <QByteArray> +#ifdef Q_OS_LINUX +#include <sys/ioctl.h> +#include <linux/fb.h> +#include <private/qmath_p.h> +#endif + #include "qeglconvenience_p.h" QT_BEGIN_NAMESPACE @@ -365,6 +371,7 @@ QSurfaceFormat q_glFormatFromConfig(EGLDisplay display, const EGLConfig config, format.setStencilBufferSize(stencilSize); format.setSamples(sampleCount); format.setStereo(false); // EGL doesn't support stereo buffers + format.setSwapInterval(referenceFormat.swapInterval()); // Clear the EGL error state because some of the above may // have errored out because the attribute is not applicable @@ -426,4 +433,108 @@ void q_printEglConfig(EGLDisplay display, EGLConfig config) qWarning("\n"); } +#ifdef Q_OS_LINUX + +QSizeF q_physicalScreenSizeFromFb(int framebufferDevice, const QSize &screenSize) +{ + const int defaultPhysicalDpi = 100; + static QSizeF size; + + if (size.isEmpty()) { + // Note: in millimeters + int width = qgetenv("QT_QPA_EGLFS_PHYSICAL_WIDTH").toInt(); + int height = qgetenv("QT_QPA_EGLFS_PHYSICAL_HEIGHT").toInt(); + + if (width && height) { + size.setWidth(width); + size.setHeight(height); + return size; + } + + struct fb_var_screeninfo vinfo; + int w = -1; + int h = -1; + QSize screenResolution; + + if (framebufferDevice != -1) { + if (ioctl(framebufferDevice, FBIOGET_VSCREENINFO, &vinfo) == -1) { + qWarning("eglconvenience: Could not query screen info"); + } else { + w = vinfo.width; + h = vinfo.height; + screenResolution = QSize(vinfo.xres, vinfo.yres); + } + } else { + // Use the provided screen size, when available, since some platforms may have their own + // specific way to query it. Otherwise try querying it from the framebuffer. + screenResolution = screenSize.isEmpty() ? q_screenSizeFromFb(framebufferDevice) : screenSize; + } + + size.setWidth(w <= 0 ? screenResolution.width() * Q_MM_PER_INCH / defaultPhysicalDpi : qreal(w)); + size.setHeight(h <= 0 ? screenResolution.height() * Q_MM_PER_INCH / defaultPhysicalDpi : qreal(h)); + } + + return size; +} + +QSize q_screenSizeFromFb(int framebufferDevice) +{ + const int defaultWidth = 800; + const int defaultHeight = 600; + static QSize size; + + if (size.isEmpty()) { + int width = qgetenv("QT_QPA_EGLFS_WIDTH").toInt(); + int height = qgetenv("QT_QPA_EGLFS_HEIGHT").toInt(); + + if (width && height) { + size.setWidth(width); + size.setHeight(height); + return size; + } + + struct fb_var_screeninfo vinfo; + int xres = -1; + int yres = -1; + + if (framebufferDevice != -1) { + if (ioctl(framebufferDevice, FBIOGET_VSCREENINFO, &vinfo) == -1) { + qWarning("eglconvenience: Could not read screen info"); + } else { + xres = vinfo.xres; + yres = vinfo.yres; + } + } + + size.setWidth(xres <= 0 ? defaultWidth : xres); + size.setHeight(yres <= 0 ? defaultHeight : yres); + } + + return size; +} + +int q_screenDepthFromFb(int framebufferDevice) +{ + const int defaultDepth = 32; + static int depth = qgetenv("QT_QPA_EGLFS_DEPTH").toInt(); + + if (depth == 0) { + struct fb_var_screeninfo vinfo; + + if (framebufferDevice != -1) { + if (ioctl(framebufferDevice, FBIOGET_VSCREENINFO, &vinfo) == -1) + qWarning("eglconvenience: Could not query screen info"); + else + depth = vinfo.bits_per_pixel; + } + + if (depth <= 0) + depth = defaultDepth; + } + + return depth; +} + +#endif // Q_OS_LINUX + QT_END_NAMESPACE |