error handling for the webgl backend

Author: pfitzseb

lib/console/view.js

@@ -26,7 +26,12 @@ class TerminalElement extends HTMLElement {
     this.model.terminal.open(this)
 
     if (this.model.isWebgl) {
-      this.model.terminal.loadAddon(new WebglAddon())
+      try {
+        this.model.terminal.loadAddon(new WebglAddon())
+      } catch (err) {
+        console.error('Tried to start terminal with WebGL backend, but encountered the following error:')
+        console.error(err)
+      }
     }
 
     this.subs.add(atom.config.observe('editor.fontSize', (val) => {