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[SDL] Do not attempt to use versions < 2.0.0

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Versions prior to 2.0.0 are not ABI-compatible with 2.0.x and
attempting to use those will result in random instability. We now
explicitly check the SDL2 version before enabling the SDL2 backend.
This commit is contained in:
thefiddler 2014-05-30 13:47:27 +02:00
parent 0fcd47132c
commit 7153a69466
1 changed files with 34 additions and 10 deletions
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44
Source/OpenTK/Configuration.cs
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@ -201,31 +201,55 @@ namespace OpenTK
bool supported = false; bool supported = false;
// Detect whether SDL2 is supported // Detect whether SDL2 is supported
// We require:
// - SDL2 version 2.0.0 or higher (previous beta
// versions are not ABI-compatible)
// - Successful SDL2 initialization (sometimes the
// binary exists but fails to initialize correctly)
var version = new Platform.SDL2.Version();
try try
{ {
if (!OpenTK.Platform.SDL2.SDL.WasInit(0)) version = Platform.SDL2.SDL.Version;
if (version.Number >= 2000)
{ {
var flags = if (Platform.SDL2.SDL.WasInit(0))
OpenTK.Platform.SDL2.SystemFlags.VIDEO | Platform.SDL2.SystemFlags.TIMER;
if (OpenTK.Platform.SDL2.SDL.Init(flags) == 0)
{ {
supported = true; supported = true;
} }
else else
{ {
Debug.Print("SDL2 init failed with error: {0}", OpenTK.Platform.SDL2.SDL.GetError()); // Attempt to initialize SDL2.
var flags =
Platform.SDL2.SystemFlags.VIDEO |
Platform.SDL2.SystemFlags.TIMER;
if (Platform.SDL2.SDL.Init(flags) == 0)
{
supported = true;
}
else
{
Debug.Print("SDL2 init failed with error: {0}",
Platform.SDL2.SDL.GetError());
}
} }
} }
else
{
supported = true;
}
} }
catch (Exception e) catch (Exception e)
{ {
Debug.Print("SDL2 init failed with exception: {0}", e); Debug.Print("SDL2 init failed with exception: {0}", e);
} }
Debug.Print("SDL2 is {0}", supported ? "supported" : "not supported");
if (!supported)
{
Debug.Print("SDL2 is not supported");
}
else
{
Debug.Print("SDL2 is {0}. Version is {1}.{2}.{3}",
supported ? "supported" : "not supported",
version.Major, version.Minor, version.Patch);
}
return supported; return supported;
} }