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Bug 2079

Summary: Problem with fullscreen modes when rotating a Windows 8 tablet by 90 degrees
Product: SDL Reporter: Elmar <elmar>
Component: videoAssignee: Sam Lantinga <slouken>
Status: ASSIGNED --- QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2 CC: leonardo.guilherme
Version: 2.0.0   
Hardware: x86_64   
OS: Windows 8   

Description Elmar 2013-09-01 14:11:55 UTC 
Hi,

if my app is running in fullscreen mode on a Windows 8 tablet, and the user rotates the tablet by 90 degrees, troubles start...

The good news is that a resize event arrives. If the normal fullscreen resolution is 1366x768, then the resize event usually reports 768x1366 (which is perfect), but not always, sometimes I get something broken like 768x1351 or so.

The bad news is that the function below doesn't get the new display modes after a 90 degree rotation, since it uses '!display->num_display_modes'.

SDL_GetNumDisplayModesForDisplay(SDL_VideoDisplay * display)
{
    if (!display->num_display_modes && _this->GetDisplayModes) {
        _this->GetDisplayModes(_this, display);
        SDL_qsort(display->display_modes, display->num_display_modes,
                  sizeof(SDL_DisplayMode), cmpmodes);
    }
    return display->num_display_modes;

I fear the SDL code can currently not handle resolutions that change at app runtime..

Best regards,
Elmar