Add `with_vsync` to WindowBuilder, plus the win32 implementation

1 files changed, 9 insertions, 1 deletions

diff --git a/src/win32/init.rs b/src/win32/init.rs
index 36bf639..ca99da8 100644
--- a/src/win32/init.rs
+++ b/src/win32/init.rs
@@ -16,7 +16,7 @@ local_data_key!(WINDOW: (ffi::HWND, Sender<Event>))
 
 pub fn new_window(builder_dimensions: Option<(uint, uint)>, builder_title: String,
                   builder_monitor: Option<super::MonitorID>,
-                  builder_gl_version: Option<(uint, uint)>,
+                  builder_gl_version: Option<(uint, uint)>, builder_vsync: bool,
                   builder_headless: bool) -> Result<Window, String>
 {
     use std::mem;
@@ -346,6 +346,14 @@ pub fn new_window(builder_dimensions: Option<(uint, uint)>, builder_title: Strin
             lib
         };
 
+        // handling vsync
+        if builder_vsync {
+            if extra_functions.SwapIntervalEXT.is_loaded() {
+                unsafe { ffi::wgl::MakeCurrent(hdc, context) };
+                extra_functions.SwapIntervalEXT(1);
+            }
+        }
+
         // building the struct
         let window = Window{
             window: real_window,