Commit 81f305e0 authored by Calixte's avatar Calixte
Browse files

Bug 1763330 - Ship OffscreenCanvas for pdf.js r=aosmond,gfx-reviewers 

- It'll helpful to generate some ImageBitmap in the worker instead passing some
  Uint8Clamped array from the worker to the main thread.
- Hence it will reduce memory footprint and improve performance in pdf.js.

Differential Revision: https://phabricator.services.mozilla.com/D143019
parent 7baded92

dom/canvas/CanvasUtils.cpp

+3 −2
Original line number Diff line number Diff line
@@ -303,7 +303,8 @@ bool IsOffscreenCanvasEnabled(JSContext* aCx, JSObject* /* unused */) { 


  if (!NS_IsMainThread()) {

    dom::WorkerPrivate* workerPrivate = dom::GetWorkerPrivateFromContext(aCx);

    if (workerPrivate->UsesSystemPrincipal()) {

    if (workerPrivate->UsesSystemPrincipal() ||

        workerPrivate->OriginNoSuffix() == u"resource://pdf.js"_ns) {

      return true;

    }
@@ -311,7 +312,7 @@ bool IsOffscreenCanvasEnabled(JSContext* aCx, JSObject* /* unused */) { 
  }



  nsIPrincipal* principal = nsContentUtils::SubjectPrincipal(aCx);

  if (principal->IsSystemPrincipal()) {

  if (principal->IsSystemPrincipal() || nsContentUtils::IsPDFJS(principal)) {

    return true;

  }