constellation: Make setting up the WebGL state fallible.

This fixes a regression caused by the glutin update.

We now are creating EGL contexts in Linux Wayland, instead of X context, so the
GLContextFactory assumption of one GL back-end per platform is broken.

This just works around it, for now, but in general I think not relying on
available WebGL state is a good thing, and we do that already for WebVR anyway.
This commit is contained in:
Emilio Cobos Álvarez 2018-03-09 23:27:29 +01:00
parent 3fc5bf87d3
commit 21df4014db
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GPG key ID: 056B727BB9C1027C
8 changed files with 48 additions and 31 deletions

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@ -483,8 +483,8 @@ pub struct ScriptThread {
/// The unit of related similar-origin browsing contexts' list of MutationObserver objects
mutation_observers: DomRefCell<Vec<Dom<MutationObserver>>>,
/// A handle to the webgl thread
webgl_chan: WebGLPipeline,
/// A handle to the WebGL thread
webgl_chan: Option<WebGLPipeline>,
/// A handle to the webvr thread, if available
webvr_chan: Option<IpcSender<WebVRMsg>>,
@ -2130,7 +2130,7 @@ impl ScriptThread {
origin,
incomplete.navigation_start,
incomplete.navigation_start_precise,
self.webgl_chan.channel(),
self.webgl_chan.as_ref().map(|chan| chan.channel()),
self.webvr_chan.clone(),
self.microtask_queue.clone(),
self.webrender_document,