Incorrect viewport size on Windows 10 Mobile

Windows Phone
1

Hi all,

I’ve just used the MonoGame 3.4 for my game and met a problem with viewport size in Windows Phone 8 project. When I ran on my Lumia 525 (running Windows 10 Mobile, build 10.0.10586.36), the viewport size was 734x480, while the expected value is 800x480. I also checked the PresentationParameters.BackBufferWidth and Window.ClientBounds, they’re the same.

I simply drawn a 800x480 texture on the screen, and it seemed to be stretched outside the screen. Then I tried to set PrefferredBackBuffer size to 800x480 but no help.

Code :

protected override void LoadContent()
{
    background = Content.Load<Texture2D>("background");
}

protected override void Draw(GameTime gameTime)
{
    GraphicsDevice.Clear(Color.CornflowerBlue);

    spriteBatch.Begin();
    spriteBatch.Draw(background, Vector2.Zero, Color.White);
    spriteBatch.End();

    base.Draw(gameTime);
}

Screenshots :

Windows Phone 8 project

wp_ss_20160107_0003.png800×480 297 KB

Windows Phone 8.1 project

wp_ss_20160107_0002.png800×480 196 KB

I read many dicussions about fullscreen issues but no solution.

Hope anyone could help.

2

Hi,

graphics.GraphicsDevice.Viewport.Width also gave me an incorrect number on Windows 10 Mobile (worked only on Windows 10 Desktop), so I use graphics.GraphicsDevice.DisplayMode.Width, which gives the right value on mobile (gives incorrect value on desktop) :smile:

So I detect the device with Windows.System.Profile.AnalyticsInfo.VersionInfo.DeviceFamily and decide which one to use. Maybe not the best solution, but this is how I made it. NEver had yet the chance to try on XBOX One, I assume there we need a 3rd solution. :smile:

3

@Zoltan_Ferenczfi: Thanks for your help. I tried out the graphics.GraphicsDevice.DisplayMode.Width but it still gave me the incorrect value. Maybe I should get the actual size directly from PhoneApplicationPage.