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Hacks to get the visual before creating a context.

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This commit is contained in:
the_fiddler 2008-01-11 20:23:41 +00:00
parent 408bdc3f3c
commit 2cc221998c
1 changed files with 25 additions and 15 deletions
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40
Source/OpenTK/Platform/X11/X11GLContext.cs
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@ -18,7 +18,7 @@ namespace OpenTK.Platform.X11
/// Provides methods to create and control an opengl context on the X11 platform.
/// This class supports OpenTK, and is not intended for use by OpenTK programs.
/// </summary>
internal sealed class X11GLContext : IGLContext
internal sealed class X11GLContext : IGLContext, IGLContextCreationHack
{
private IntPtr context;
private DisplayMode mode;
@ -29,21 +29,25 @@ namespace OpenTK.Platform.X11
#region --- Constructors ---
public X11GLContext(DisplayMode mode, IWindowInfo info)
{
if (info == null)
throw new ArgumentNullException("IWindowInfo cannot be null.");
this.windowInfo = new WindowInfo(info);
this.mode = mode;
this.ChooseContext();
}
/// <summary>
/// Constructs a new X11GLContext object.
/// </summary>
public X11GLContext() { }
#endregion
#region private void ChooseContext()
#region --- IGLContextCreationHack Members ---
private void ChooseContext()
#region bool IGLContextCreationHack.SelectDisplayMode(DisplayMode mode, IWindowInfo info)
/// <summary>
/// HACK! This function will be removed in 0.3.15
/// Checks if the specified OpenTK.Platform.DisplayMode is available, and selects it if it is.
/// </summary>
/// <param name="mode">The OpenTK.Platform.DisplayMode to select.</param>
/// <param name="info">The OpenTK.Platform.IWindowInfo that describes the display to use. Note: a window handle is not necessary for this function!</param>
/// <returns>True if the DisplayMode is available, false otherwise.</returns>
bool IGLContextCreationHack.SelectDisplayMode(DisplayMode mode, IWindowInfo info)
{
List<int> visualAttributes = new List<int>();
@ -86,15 +90,21 @@ namespace OpenTK.Platform.X11
visual = Glx.ChooseVisual(windowInfo.Display, windowInfo.Screen, visualAttributes.ToArray());
if (visual == IntPtr.Zero)
{
throw new ApplicationException("Could not create requested DisplayMode.");
}
return false;
else
{
windowInfo.VisualInfo = (XVisualInfo)Marshal.PtrToStructure(visual,
typeof(XVisualInfo));
Debug.Print("Chose visual {0}", windowInfo.VisualInfo.ToString());
}
return true;
}
#endregion
void IGLContextCreationHack.SetWindowHandle(IntPtr handle)
{
this.windowInfo.Handle = handle;
}
#endregion