From 6f7a2fa1e74975049bbb232fa0fc10ad1e67d219 Mon Sep 17 00:00:00 2001
From: Pierre Krieger <pierre.krieger1708@gmail.com>
Date: Sun, 26 Jul 2015 16:56:13 +0200
Subject: [PATCH] Indicate the exact error when eglMakeCurrent or
 eglSwapBuffers fail

---
 src/api/egl/mod.rs | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/src/api/egl/mod.rs b/src/api/egl/mod.rs
index 328a11e6..8817f9d5 100644
--- a/src/api/egl/mod.rs
+++ b/src/api/egl/mod.rs
@@ -129,10 +129,9 @@ impl GlContext for Context {
         let ret = self.egl.MakeCurrent(self.display, self.surface, self.surface, self.context);
 
         if ret == 0 {
-            if self.egl.GetError() as u32 == ffi::egl::CONTEXT_LOST {
-                return Err(ContextError::ContextLost);
-            } else {
-                panic!("eglMakeCurrent failed");
+            match self.egl.GetError() as u32 {
+                ffi::egl::CONTEXT_LOST => return Err(ContextError::ContextLost),
+                err => panic!("eglMakeCurrent failed (eglGetError returned 0x{:x})", err)
             }
 
         } else {
@@ -158,10 +157,9 @@ impl GlContext for Context {
         };
 
         if ret == 0 {
-            if unsafe { self.egl.GetError() } as u32 == ffi::egl::CONTEXT_LOST {
-                return Err(ContextError::ContextLost);
-            } else {
-                panic!("eglSwapBuffers failed");
+            match unsafe { self.egl.GetError() } as u32 {
+                ffi::egl::CONTEXT_LOST => return Err(ContextError::ContextLost),
+                err => panic!("eglSwapBuffers failed (eglGetError returned 0x{:x})", err)
             }
 
         } else {