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Add support for the windows DPI scaling.

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This commit is contained in:
Paul Chote
2016-12-24 01:11:10 +00:00
parent 5e7c816257
commit 87b894ad8e
2 changed files with 31 additions and 8 deletions
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21
OpenRA.Platforms.Default/Sdl2GraphicsDevice.cs
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@@ -31,11 +31,18 @@ namespace OpenRA.Platforms.Default
internal Size SurfaceSize { get; private set; }
public event Action<float, float> OnWindowScaleChanged = (before, after) => { };
[DllImport("user32.dll")]
static extern bool SetProcessDPIAware();
public Sdl2GraphicsDevice(Size windowSize, WindowMode windowMode)
{
Console.WriteLine("Using SDL 2 with OpenGL renderer");
WindowSize = windowSize;
// Disable legacy scaling on Windows
if (Platform.CurrentPlatform == PlatformType.Windows)
SetProcessDPIAware();
SDL.SDL_Init(SDL.SDL_INIT_NOPARACHUTE | SDL.SDL_INIT_VIDEO);
SDL.SDL_GL_SetAttribute(SDL.SDL_GLattr.SDL_GL_DOUBLEBUFFER, 1);
SDL.SDL_GL_SetAttribute(SDL.SDL_GLattr.SDL_GL_RED_SIZE, 8);
@@ -55,10 +62,7 @@ namespace OpenRA.Platforms.Default
Console.WriteLine("Using resolution: {0}x{1}", WindowSize.Width, WindowSize.Height);
var windowFlags = SDL.SDL_WindowFlags.SDL_WINDOW_OPENGL;
if (Platform.CurrentPlatform == PlatformType.OSX)
windowFlags |= SDL.SDL_WindowFlags.SDL_WINDOW_ALLOW_HIGHDPI;
var windowFlags = SDL.SDL_WindowFlags.SDL_WINDOW_OPENGL | SDL.SDL_WindowFlags.SDL_WINDOW_ALLOW_HIGHDPI;
window = SDL.SDL_CreateWindow("OpenRA", SDL.SDL_WINDOWPOS_CENTERED, SDL.SDL_WINDOWPOS_CENTERED,
WindowSize.Width, WindowSize.Height, windowFlags);
@@ -75,6 +79,15 @@ namespace OpenRA.Platforms.Default
SurfaceSize = new Size(width, height);
WindowScale = width * 1f / WindowSize.Width;
}
else if (Platform.CurrentPlatform == PlatformType.Windows)
{
float ddpi, hdpi, vdpi;
if (SDL.SDL_GetDisplayDPI(0, out ddpi, out hdpi, out vdpi) == 0)
{
WindowScale = ddpi / 96;
WindowSize = new Size((int)(SurfaceSize.Width / WindowScale), (int)(SurfaceSize.Height / WindowScale));
}
}
Console.WriteLine("Using window scale {0:F2}", WindowScale);