Handle errors from MakeCurrent and SwapBuffers

src/platform/android/mod.rs

@@ -2,6 +2,8 @@
 
 pub use api::android::*;
 
+use ContextError;
+
 pub struct HeadlessContext(i32);
 
 impl HeadlessContext {
@@ -11,7 +13,7 @@ impl HeadlessContext {
     }
 
     /// See the docs in the crate root file.
-    pub unsafe fn make_current(&self) {
+    pub unsafe fn make_current(&self) -> Result<(), ContextError> {
         unimplemented!()
     }
 

src/platform/emscripten/mod.rs

@@ -1,5 +1,6 @@
 #![cfg(target_os = "emscripten")]
 
+use ContextError;
 use GlContext;
 
 pub use api::emscripten::{Window, WindowProxy, MonitorID, get_available_monitors};
@@ -15,7 +16,7 @@ impl HeadlessContext {
 }
 
 impl GlContext for HeadlessContext {
-    unsafe fn make_current(&self) {
+    unsafe fn make_current(&self) -> Result<(), ContextError> {
         self.0.make_current()
     }
 
@@ -27,7 +28,7 @@ impl GlContext for HeadlessContext {
         self.0.get_proc_address(addr)
     }
 
-    fn swap_buffers(&self) {
+    fn swap_buffers(&self) -> Result<(), ContextError> {
         self.0.swap_buffers()
     }
 

src/platform/linux/api_dispatch.rs

@@ -7,6 +7,7 @@ use std::collections::VecDeque;
 use std::sync::Arc;
 
 use BuilderAttribs;
+use ContextError;
 use CreationError;
 use CursorState;
 use Event;
@@ -289,7 +290,7 @@ impl Window {
 }
 
 impl GlContext for Window {
-    unsafe fn make_current(&self) {
+    unsafe fn make_current(&self) -> Result<(), ContextError> {
         match self {
             &Window::X(ref w) => w.make_current(),
             &Window::Wayland(ref w) => w.make_current()
@@ -310,7 +311,7 @@ impl GlContext for Window {
         }
     }
 
-    fn swap_buffers(&self) {
+    fn swap_buffers(&self) -> Result<(), ContextError> {
         match self {
             &Window::X(ref w) => w.swap_buffers(),
             &Window::Wayland(ref w) => w.swap_buffers()

src/platform/linux/mod.rs

@@ -2,6 +2,7 @@
 
 use Api;
 use BuilderAttribs;
+use ContextError;
 use CreationError;
 use GlContext;
 use PixelFormat;
@@ -37,7 +38,7 @@ impl HeadlessContext {
 
 impl GlContext for HeadlessContext {
     #[inline]
-    unsafe fn make_current(&self) {
+    unsafe fn make_current(&self) -> Result<(), ContextError> {
         self.0.make_current()
     }
 
@@ -52,7 +53,7 @@ impl GlContext for HeadlessContext {
     }
 
     #[inline]
-    fn swap_buffers(&self) {
+    fn swap_buffers(&self) -> Result<(), ContextError> {
         self.0.swap_buffers()
     }
 

src/platform/windows/mod.rs

@@ -6,6 +6,7 @@ use libc;
 
 use Api;
 use BuilderAttribs;
+use ContextError;
 use CreationError;
 use PixelFormat;
 use GlContext;
@@ -21,7 +22,7 @@ impl HeadlessContext {
 }
 
 impl GlContext for HeadlessContext {
-    unsafe fn make_current(&self) {
+    unsafe fn make_current(&self) -> Result<(), ContextError> {
         self.0.make_current()
     }
 
@@ -33,7 +34,7 @@ impl GlContext for HeadlessContext {
         self.0.get_proc_address(addr)
     }
 
-    fn swap_buffers(&self) {
+    fn swap_buffers(&self) -> Result<(), ContextError> {
         self.0.swap_buffers()
     }