make_not_current on x11

examples/winit.rs

@@ -26,12 +26,15 @@ fn main() {
                 *control_flow = ControlFlow::Exit;
             }
             winit::event::Event::RedrawRequested(_) => {
+                context.make_current();
+
                 unsafe {
                     gl::ClearColor(1.0, 0.0, 1.0, 1.0);
                     gl::Clear(gl::COLOR_BUFFER_BIT);
                 }
 
                 context.swap_buffers();
+                context.make_not_current();
             }
             _ => {}
         }

src/x11.rs

@@ -99,6 +99,12 @@ impl GlContext {
         }
     }
 
+    pub fn make_not_current(&self) {
+        unsafe {
+            glx::glXMakeCurrent(self.display, 0, std::ptr::null_mut());
+        }
+    }
+
     pub fn get_proc_address(&self, symbol: &str) -> *const c_void {
         get_proc_address(symbol)
     }