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Delay VisualInfo construction (fixes #17)

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In OpenTK 1.1, GraphicsMode queries the platform for a mode id lazily.
By delaying VisualInfo selection until the GraphicsContext is constructed
we ensure that a concrete GraphicsMode is selected and ready for use.
This commit is contained in:
parallels 2013-12-14 11:54:55 +01:00
parent 19d9beb6a4
commit 61f334f3f5
2 changed files with 20 additions and 12 deletions
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27
Source/GLControl/X11GLControl.cs
View file

@ -63,6 +63,10 @@ namespace OpenTK
GraphicsMode mode; GraphicsMode mode;
IWindowInfo window_info; IWindowInfo window_info;
IntPtr display; IntPtr display;
IntPtr rootWindow;
// Use reflection to retrieve the necessary values from Mono's Windows.Forms implementation.
Type xplatui = Type.GetType("System.Windows.Forms.XplatUIX11, System.Windows.Forms");
#endregion #endregion
@ -77,16 +81,24 @@ namespace OpenTK
this.mode = mode; this.mode = mode;
// Use reflection to retrieve the necessary values from Mono's Windows.Forms implementation.
Type xplatui = Type.GetType("System.Windows.Forms.XplatUIX11, System.Windows.Forms");
if (xplatui == null) throw new PlatformNotSupportedException( if (xplatui == null) throw new PlatformNotSupportedException(
"System.Windows.Forms.XplatUIX11 missing. Unsupported platform or Mono runtime version, aborting."); "System.Windows.Forms.XplatUIX11 missing. Unsupported platform or Mono runtime version, aborting.");
// get the required handles from the X11 API. // get the required handles from the X11 API.
display = (IntPtr)GetStaticFieldValue(xplatui, "DisplayHandle"); display = (IntPtr)GetStaticFieldValue(xplatui, "DisplayHandle");
IntPtr rootWindow = (IntPtr)GetStaticFieldValue(xplatui, "RootWindow"); rootWindow = (IntPtr)GetStaticFieldValue(xplatui, "RootWindow");
int screen = (int)GetStaticFieldValue(xplatui, "ScreenNo"); int screen = (int)GetStaticFieldValue(xplatui, "ScreenNo");
window_info = Utilities.CreateX11WindowInfo(display, screen, control.Handle, rootWindow, IntPtr.Zero);
}
#region IGLControl Members
public IGraphicsContext CreateContext(int major, int minor, GraphicsContextFlags flags)
{
GraphicsContext context = new GraphicsContext(mode, this.WindowInfo, major, minor, flags);
mode = context.GraphicsMode;
// get the XVisualInfo for this GraphicsMode // get the XVisualInfo for this GraphicsMode
XVisualInfo info = new XVisualInfo(); XVisualInfo info = new XVisualInfo();
info.VisualID = mode.Index.Value; info.VisualID = mode.Index.Value;
@ -98,14 +110,7 @@ namespace OpenTK
SetStaticFieldValue(xplatui, "CustomVisual", info.Visual); SetStaticFieldValue(xplatui, "CustomVisual", info.Visual);
SetStaticFieldValue(xplatui, "CustomColormap", XCreateColormap(display, rootWindow, info.Visual, 0)); SetStaticFieldValue(xplatui, "CustomColormap", XCreateColormap(display, rootWindow, info.Visual, 0));
window_info = Utilities.CreateX11WindowInfo(display, screen, control.Handle, rootWindow, infoPtr); return context;
}
#region IGLControl Members
public IGraphicsContext CreateContext(int major, int minor, GraphicsContextFlags flags)
{
return new GraphicsContext(mode, this.WindowInfo, major, minor, flags);
} }
public bool IsIdle public bool IsIdle

5
Source/OpenTK/Platform/Utilities.cs
View file

@ -212,7 +212,10 @@ namespace OpenTK.Platform
window.Screen = screen; window.Screen = screen;
window.Handle = windowHandle; window.Handle = windowHandle;
window.RootWindow = rootWindow; window.RootWindow = rootWindow;
window.VisualInfo = (X11.XVisualInfo)Marshal.PtrToStructure(visualInfo, typeof(X11.XVisualInfo)); if (visualInfo != IntPtr.Zero)
{
window.VisualInfo = (X11.XVisualInfo)Marshal.PtrToStructure(visualInfo, typeof(X11.XVisualInfo));
}
return window; return window;
} }