public Vector3 GetScreenScale(IUltravioletPlatform gfx, float width, float height)
{
if (gfx.Windows.GetPrimary() == null)
{
return(oldScreenScale);
}
var scaleX = gfx.Windows.GetPrimary().DrawableSize.Width / width;
var scaleY = gfx.Windows.GetPrimary().DrawableSize.Height / height;
oldScreenScale = new Vector3(scaleX, scaleY, 1.0f);
return(oldScreenScale);
}
/// <summary>
/// Initializes a new instance of the OpenGLUltravioletContext class.
/// </summary>
/// <param name="host">The object that is hosting the Ultraviolet context.</param>
/// <param name="configuration">The Ultraviolet Framework configuration settings for this context.</param>
public OpenGLUltravioletContext(IUltravioletHost host, OpenGLUltravioletConfiguration configuration)
: base(host, configuration)
{
Contract.Require(configuration, nameof(configuration));
this.IsHardwareInputDisabled = configuration.IsHardwareInputDisabled;
var sdlFlags = configuration.EnableServiceMode ?
SDL_Init.TIMER | SDL_Init.EVENTS :
SDL_Init.TIMER | SDL_Init.VIDEO | SDL_Init.JOYSTICK | SDL_Init.GAMECONTROLLER | SDL_Init.EVENTS;
if (SDL.Init(sdlFlags) != 0)
throw new SDL2Exception();
var isGLES = (Platform == UltravioletPlatform.Android || Platform == UltravioletPlatform.iOS);
var versionRequired = isGLES ? new Version(2, 0) : new Version(3, 1);
var versionRequested = isGLES ? configuration.MinimumOpenGLESVersion : configuration.MinimumOpenGLVersion;
if (versionRequested == null || versionRequested < versionRequired)
{
if (isGLES)
{
versionRequested = Platform == UltravioletPlatform.Android ?
new Version(2, 0) : new Version(3, 0);
}
else
{
versionRequested = versionRequired;
}
}
if (!configuration.EnableServiceMode)
{
var profile = isGLES ? SDL_GLprofile.ES : SDL_GLprofile.CORE;
if (SDL.GL_SetAttribute(SDL_GLattr.CONTEXT_PROFILE_MASK, (Int32)profile) < 0)
throw new SDL2Exception();
// NOTE: Asking for an ES 3.0 context in the emulator will return a valid
// context pointer, but actually using it will cause segfaults. It seems like
// the best thing to do on Android is just not ask for a specific version,
// and trust the OS to give you the highest version it supports.
if (Platform != UltravioletPlatform.Android)
{
if (SDL.GL_SetAttribute(SDL_GLattr.CONTEXT_MAJOR_VERSION, versionRequested.Major) < 0)
throw new SDL2Exception();
if (SDL.GL_SetAttribute(SDL_GLattr.CONTEXT_MINOR_VERSION, versionRequested.Minor) < 0)
throw new SDL2Exception();
}
if (SDL.GL_SetAttribute(SDL_GLattr.DEPTH_SIZE, configuration.BackBufferDepthSize) < 0)
throw new SDL2Exception();
if (SDL.GL_SetAttribute(SDL_GLattr.STENCIL_SIZE, configuration.BackBufferStencilSize) < 0)
throw new SDL2Exception();
if (SDL.GL_SetAttribute(SDL_GLattr.RETAINED_BACKING, 0) < 0)
throw new SDL2Exception();
if (configuration.Use32BitFramebuffer)
{
if (SDL.GL_SetAttribute(SDL_GLattr.RED_SIZE, 8) < 0)
throw new SDL2Exception();
if (SDL.GL_SetAttribute(SDL_GLattr.GREEN_SIZE, 8) < 0)
throw new SDL2Exception();
if (SDL.GL_SetAttribute(SDL_GLattr.BLUE_SIZE, 8) < 0)
throw new SDL2Exception();
}
else
{
if (SDL.GL_SetAttribute(SDL_GLattr.RED_SIZE, 5) < 0)
throw new SDL2Exception();
if (SDL.GL_SetAttribute(SDL_GLattr.GREEN_SIZE, 6) < 0)
throw new SDL2Exception();
if (SDL.GL_SetAttribute(SDL_GLattr.BLUE_SIZE, 5) < 0)
throw new SDL2Exception();
}
}
this.platform = IsRunningInServiceMode ? (IUltravioletPlatform)new DummyUltravioletPlatform(this) : new OpenGLUltravioletPlatform(this, configuration);
PumpEvents();
this.graphics = IsRunningInServiceMode ? (IUltravioletGraphics)new DummyUltravioletGraphics(this) : new OpenGLUltravioletGraphics(this, configuration, versionRequested);
if (!IsRunningInServiceMode)
((OpenGLUltravioletGraphics)graphics).ResetDeviceStates();
this.audio = IsRunningInServiceMode ? new DummyUltravioletAudio(this) : InitializeAudioSubsystem(configuration);
this.input = IsRunningInServiceMode ? (IUltravioletInput)(new DummyUltravioletInput(this)) : new SDL2UltravioletInput(this);
this.content = new UltravioletContent(this);
this.ui = new UltravioletUI(this, configuration);
this.content.RegisterImportersAndProcessors(new[]
{
typeof(SDL2.Native.SDL).Assembly,
String.IsNullOrEmpty(configuration.AudioSubsystemAssembly) ? null : Assembly.Load(configuration.AudioSubsystemAssembly),
String.IsNullOrEmpty(configuration.ViewProviderAssembly) ? null : Assembly.Load(configuration.ViewProviderAssembly)
});
this.content.Importers.RegisterImporter<XmlContentImporter>("prog");
PumpEvents();
unsafe
{
eventFilter = new SDL.EventFilter(SDLEventFilter);
eventFilterPtr = Marshal.GetFunctionPointerForDelegate(eventFilter);
SDL.SetEventFilter(eventFilterPtr, IntPtr.Zero);
}
InitializeContext();
InitializeViewProvider(configuration);
}
