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39 | |
40 | #include "qxcbglxwindow.h" |
41 | |
42 | #include "qxcbscreen.h" |
43 | #include <QtGlxSupport/private/qglxconvenience_p.h> |
44 | #include <QDebug> |
45 | |
46 | QT_BEGIN_NAMESPACE |
47 | |
48 | QXcbGlxWindow::QXcbGlxWindow(QWindow *window) |
49 | : QXcbWindow(window) |
50 | { |
51 | } |
52 | |
53 | QXcbGlxWindow::~QXcbGlxWindow() |
54 | { |
55 | } |
56 | |
57 | const xcb_visualtype_t *QXcbGlxWindow::createVisual() |
58 | { |
59 | QXcbScreen *scr = xcbScreen(); |
60 | if (!scr) |
61 | return QXcbWindow::createVisual(); |
62 | |
63 | qCDebug(lcQpaGl) << "Requested format before FBConfig/Visual selection:" << m_format; |
64 | |
65 | Display *dpy = static_cast<Display *>(scr->connection()->xlib_display()); |
66 | const char *glxExts = glXQueryExtensionsString(dpy, screen: scr->screenNumber()); |
67 | int flags = 0; |
68 | if (glxExts) { |
69 | qCDebug(lcQpaGl, "Available GLX extensions: %s" , glxExts); |
70 | if (strstr(haystack: glxExts, needle: "GLX_EXT_framebuffer_sRGB" ) || strstr(haystack: glxExts, needle: "GLX_ARB_framebuffer_sRGB" )) |
71 | flags |= QGLX_SUPPORTS_SRGB; |
72 | } |
73 | |
74 | const auto formatBackup = m_format; |
75 | XVisualInfo *visualInfo = qglx_findVisualInfo(display: dpy, screen: scr->screenNumber(), format: &m_format, GLX_WINDOW_BIT, flags); |
76 | if (!visualInfo) { |
77 | qCDebug(lcQpaGl) << "No XVisualInfo for format" << m_format; |
78 | // restore initial format before requesting it again |
79 | m_format = formatBackup; |
80 | return QXcbWindow::createVisual(); |
81 | } |
82 | const xcb_visualtype_t *xcb_visualtype = scr->visualForId(visualid: visualInfo->visualid); |
83 | XFree(visualInfo); |
84 | |
85 | qCDebug(lcQpaGl) << "Got format:" << m_format; |
86 | |
87 | return xcb_visualtype; |
88 | } |
89 | |
90 | QT_END_NAMESPACE |
91 | |