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Make context current on loading thread and be more defensive when retrieving unmanaged entry points. Resolves issue [#1378]: "OpenGL Extensions test fails".

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This commit is contained in:
the_fiddler 2009-11-16 11:17:20 +00:00
parent d5175d1d9c
commit 3c0787c6a9
1 changed files with 13 additions and 4 deletions
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17
Source/Examples/OpenTK/Test/Extensions.cs
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@ -55,9 +55,15 @@ namespace Examples.WinForms
{ {
Application.Idle -= StartAsync; Application.Idle -= StartAsync;
// Create a context in order to load all GL methods (GL.LoadAll() is called automatically.) // Create a context to load all GL entry points.
using (GLControl control = new GLControl(GraphicsMode.Default, 3, 0, GraphicsContextFlags.Default)) // The loading part is handled automatically by OpenTK.
using (INativeWindow window = new OpenTK.NativeWindow())
using (IGraphicsContext context = new GraphicsContext(GraphicsMode.Default, window.WindowInfo, 3, 0, GraphicsContextFlags.Default))
{ {
window.ProcessEvents();
context.MakeCurrent(window.WindowInfo);
(context as IGraphicsContextInternal).LoadAll();
TextBoxVendor.Text = GL.GetString(StringName.Vendor); TextBoxVendor.Text = GL.GetString(StringName.Vendor);
TextBoxRenderer.Text = GL.GetString(StringName.Renderer); TextBoxRenderer.Text = GL.GetString(StringName.Renderer);
TextBoxVersion.Text = GL.GetString(StringName.Version); TextBoxVersion.Text = GL.GetString(StringName.Version);
@ -73,11 +79,14 @@ namespace Examples.WinForms
foreach (Function f in LoadFunctionsFromType(typeof(GL))) foreach (Function f in LoadFunctionsFromType(typeof(GL)))
{ {
FieldInfo @delegate = delegates.GetField(f.EntryPoint,
BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.Instance);
// Only show a function as supported when all relevant overloads are supported. // Only show a function as supported when all relevant overloads are supported.
if (!functions.ContainsKey(f)) if (!functions.ContainsKey(f))
functions.Add(f, (bool)delegates.GetField(f.EntryPoint).GetValue(null)); functions.Add(f, @delegate != null && @delegate.GetValue(null) != null);
else else
functions[f] &= (bool)delegates.GetField(f.EntryPoint).GetValue(null); functions[f] &= @delegate != null && @delegate.GetValue(null) != null;
} }
// Count supported functions using the delegates directly. // Count supported functions using the delegates directly.