Skip to content

Fix restoring native resolution from DSR modes #208

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
bbj233 wants to merge 1 commit into
base: main
Choose a base branch
from
Open

Fix restoring native resolution from DSR modes #208

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
11 changes: 11 additions & 0 deletions Source/AutoActions.Displays/DisplayManagerBase.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -282,6 +282,14 @@ public void SetResolution(Display display, Size resolution)
{
dm.dmPelsHeight = Convert.ToInt32(resolution.Height);
dm.dmPelsWidth = Convert.ToInt32(resolution.Width);

// Some display drivers expose a fixed-output scaling mode for the
// current DSR/DLDSR resolution. That setting belongs to the current
// mode and can make an otherwise valid native resolution fail with
// DISP_CHANGE_BADMODE when it is carried over unchanged.
dm.dmFields |= DM.PelsWidth | DM.PelsHeight;
dm.dmFields &= ~DM.DisplayFixedOutput;
dm.dmDisplayFixedOutput = 0;
return dm;
};
ChangeDisplaySetting(display.ID, func);
Expand All @@ -308,6 +316,9 @@ private void ChangeDisplaySetting(uint deviceID, Func<DEVMODE, DEVMODE> func)
DISP_CHANGE iRet = NativeMethods.ChangeDisplaySettingsEx(
d.DeviceName, ref dm, IntPtr.Zero,
DisplaySettingsFlags.CDS_UPDATEREGISTRY, IntPtr.Zero);

if (iRet != DISP_CHANGE.Successful)
throw new InvalidOperationException($"Unable to change display settings for {d.DeviceName}: {iRet}");
}
}

Expand Down