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Fixed race condition in GraphicsMode.Default.

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This commit is contained in:
the_fiddler 2009-11-03 13:16:59 +00:00
parent 92c5cbfaf2
commit 043e0fec2f
1 changed files with 14 additions and 11 deletions
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25
Source/OpenTK/Graphics/GraphicsMode.cs
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@ -23,7 +23,7 @@ namespace OpenTK.Graphics
static GraphicsMode defaultMode;
static IGraphicsMode implementation;
static object mode_selection_lock = new object();
static readonly object SyncRoot = new object();
#region --- Constructors ---
@ -31,7 +31,10 @@ namespace OpenTK.Graphics
static GraphicsMode()
{
implementation = Platform.Factory.Default.CreateGraphicsMode();
lock (SyncRoot)
{
implementation = Platform.Factory.Default.CreateGraphicsMode();
}
}
#endregion
@ -180,10 +183,7 @@ namespace OpenTK.Graphics
if (index == null)
{
GraphicsMode mode;
lock (mode_selection_lock)
{
mode = implementation.SelectGraphicsMode(ColorFormat, Depth, Stencil, Samples, AccumulatorFormat, Buffers, Stereo);
}
mode = implementation.SelectGraphicsMode(ColorFormat, Depth, Stencil, Samples, AccumulatorFormat, Buffers, Stereo);
Index = mode.Index;
ColorFormat = mode.ColorFormat;
@ -303,13 +303,16 @@ namespace OpenTK.Graphics
{
get
{
if (defaultMode == null)
lock (SyncRoot)
{
Debug.Print("Creating default GraphicsMode ({0}, {1}, {2}, {3}, {4}, {5}, {6}).", DisplayDevice.Default.BitsPerPixel,
16, 0, 0, 0, 2, false);
defaultMode = new GraphicsMode(DisplayDevice.Default.BitsPerPixel, 16, 0, 0, 0, 2, false);
if (defaultMode == null)
{
Debug.Print("Creating default GraphicsMode ({0}, {1}, {2}, {3}, {4}, {5}, {6}).", DisplayDevice.Default.BitsPerPixel,
16, 0, 0, 0, 2, false);
defaultMode = new GraphicsMode(DisplayDevice.Default.BitsPerPixel, 16, 0, 0, 0, 2, false);
}
return defaultMode;
}
return defaultMode;
}
}