diff options
Diffstat (limited to 'src/platformsupport/glxconvenience/qglxconvenience.cpp')
-rw-r--r-- | src/platformsupport/glxconvenience/qglxconvenience.cpp | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/src/platformsupport/glxconvenience/qglxconvenience.cpp b/src/platformsupport/glxconvenience/qglxconvenience.cpp index 6bd73de8f3..6458454336 100644 --- a/src/platformsupport/glxconvenience/qglxconvenience.cpp +++ b/src/platformsupport/glxconvenience/qglxconvenience.cpp @@ -224,13 +224,16 @@ GLXFBConfig qglx_findConfig(Display *display, int screen , QSurfaceFormat format } QXlibPointer<XVisualInfo> visual(glXGetVisualFromFBConfig(display, candidate)); - if (visual.isNull()) - continue; - - const int actualRed = qPopulationCount(visual->red_mask); - const int actualGreen = qPopulationCount(visual->green_mask); - const int actualBlue = qPopulationCount(visual->blue_mask); - const int actualAlpha = visual->depth - actualRed - actualGreen - actualBlue; + int actualRed; + int actualGreen; + int actualBlue; + int actualAlpha; + glXGetFBConfigAttrib(display, candidate, GLX_RED_SIZE, &actualRed); + glXGetFBConfigAttrib(display, candidate, GLX_GREEN_SIZE, &actualGreen); + glXGetFBConfigAttrib(display, candidate, GLX_BLUE_SIZE, &actualBlue); + glXGetFBConfigAttrib(display, candidate, GLX_ALPHA_SIZE, &actualAlpha); + // Sometimes the visuals don't have a depth that includes the alpha channel. + actualAlpha = qMin(actualAlpha, visual->depth - actualRed - actualGreen - actualBlue); if (requestedRed && actualRed < requestedRed) continue; |