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[Win] Clear extension list on reload

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This commit is contained in:
Stefanos A. 2014-01-21 09:04:27 +01:00
parent 88ae446781
commit 770b697583
1 changed files with 26 additions and 19 deletions
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45
Source/OpenTK/Platform/Windows/WglHelper.cs
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@ -48,25 +48,28 @@ namespace OpenTK.Platform.Windows
/// <returns>True if the extension is supported by the given context, false otherwise</returns> /// <returns>True if the extension is supported by the given context, false otherwise</returns>
public static bool SupportsExtension(IntPtr dc, string name) public static bool SupportsExtension(IntPtr dc, string name)
{ {
if (extensions.Count == 0) lock (sync)
{ {
// We cache this locally, as another thread might create a context which doesn't support this method. if (extensions.Count == 0)
// The design is far from ideal, but there's no good solution to this issue as long as we are using
// static WGL/GL classes. Fortunately, this issue is extremely unlikely to arise in practice, as you'd
// have to create one accelerated and one non-accelerated context in the same application, with the
// non-accelerated context coming second.
bool get_arb = SupportsFunction("wglGetExtensionsStringARB");
bool get_ext = SupportsFunction("wglGetExtensionsStringEXT");
string str =
get_arb ? Arb.GetExtensionsString(dc) :
get_ext ? Ext.GetExtensionsString() :
String.Empty;
if (!String.IsNullOrEmpty(str))
{ {
foreach (string ext in str.Split(' ')) // We cache this locally, as another thread might create a context which doesn't support this method.
// The design is far from ideal, but there's no good solution to this issue as long as we are using
// static WGL/GL classes. Fortunately, this issue is extremely unlikely to arise in practice, as you'd
// have to create one accelerated and one non-accelerated context in the same application, with the
// non-accelerated context coming second.
bool get_arb = SupportsFunction("wglGetExtensionsStringARB");
bool get_ext = SupportsFunction("wglGetExtensionsStringEXT");
string str =
get_arb ? Arb.GetExtensionsString(dc) :
get_ext ? Ext.GetExtensionsString() :
String.Empty;
if (!String.IsNullOrEmpty(str))
{ {
extensions.Add(ext, true); foreach (string ext in str.Split(' '))
{
extensions.Add(ext, true);
}
} }
} }
} }
@ -132,11 +135,15 @@ namespace OpenTK.Platform.Windows
internal override void LoadEntryPoints() internal override void LoadEntryPoints()
{ {
if (Wgl.GetCurrentContext() != IntPtr.Zero) lock (SyncRoot)
{ {
for (int i = 0; i < EntryPointsInstance.Length; i++) if (Wgl.GetCurrentContext() != IntPtr.Zero)
{ {
EntryPointsInstance[i] = GetAddress(EntryPointNamesInstance[i]); for (int i = 0; i < EntryPointsInstance.Length; i++)
{
EntryPointsInstance[i] = GetAddress(EntryPointNamesInstance[i]);
}
extensions.Clear();
} }
} }
} }