diff options
| -rw-r--r-- | src/win32/init.rs | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/win32/init.rs b/src/win32/init.rs index ca99da8..5168cc6 100644 --- a/src/win32/init.rs +++ b/src/win32/init.rs @@ -350,7 +350,16 @@ pub fn new_window(builder_dimensions: Option<(uint, uint)>, builder_title: Strin if builder_vsync { if extra_functions.SwapIntervalEXT.is_loaded() { unsafe { ffi::wgl::MakeCurrent(hdc, context) }; - extra_functions.SwapIntervalEXT(1); + if extra_functions.SwapIntervalEXT(1) == 0 { + tx.send(Err(format!("wglSwapIntervalEXT failed"))); + unsafe { ffi::wgl::DeleteContext(context); } + unsafe { ffi::DestroyWindow(real_window); } + return; + } + + // it is important to remove the current context, otherwise you get very weird + // errors + unsafe { ffi::wgl::MakeCurrent(ptr::null(), ptr::null()); } } } |