From 63b4874b39b2e362102984d4da2cbd11dabb3d30 Mon Sep 17 00:00:00 2001
From: Jonas Jenwald <jonas.jenwald@gmail.com>
Date: Wed, 11 Mar 2026 15:22:55 +0100
Subject: [PATCH] Remove the `enableHWA` option from viewer components (PR
 20016 follow-up)

In PR 20016 the actual uses of the `enableHWA` option was removed from the viewer, but for some reason it's still being provided when initializing `PDFViewer` and `PDFThumbnailViewer` despite the fact that it's now dead code.
---
 web/app.js                  | 5 +----
 web/app_options.js          | 2 +-
 web/pdf_thumbnail_viewer.js | 5 -----
 web/pdf_viewer.js           | 6 ------
 4 files changed, 2 insertions(+), 16 deletions(-)

diff --git a/web/app.js b/web/app.js
index 67cf5e942..211dc0ab6 100644
--- a/web/app.js
+++ b/web/app.js
@@ -535,8 +535,7 @@ const PDFViewerApplication = {
           )
         : null;
 
-    const enableHWA = AppOptions.get("enableHWA"),
-      maxCanvasPixels = AppOptions.get("maxCanvasPixels"),
+    const maxCanvasPixels = AppOptions.get("maxCanvasPixels"),
       maxCanvasDim = AppOptions.get("maxCanvasDim"),
       capCanvasAreaFactor = AppOptions.get("capCanvasAreaFactor");
     const pdfViewer = (this.pdfViewer = new PDFViewer({
@@ -580,7 +579,6 @@ const PDFViewerApplication = {
       pageColors,
       mlManager,
       abortSignal,
-      enableHWA,
       supportsPinchToZoom: this.supportsPinchToZoom,
       enableAutoLinking: AppOptions.get("enableAutoLinking"),
       minDurationToUpdateCanvas: AppOptions.get("minDurationToUpdateCanvas"),
@@ -601,7 +599,6 @@ const PDFViewerApplication = {
         maxCanvasDim,
         pageColors,
         abortSignal,
-        enableHWA,
         enableSplitMerge,
         statusBar: viewsManager.viewsManagerStatusBar,
         undoBar: viewsManager.viewsManagerUndoBar,
diff --git a/web/app_options.js b/web/app_options.js
index 186bcd018..63278d0da 100644
--- a/web/app_options.js
+++ b/web/app_options.js
@@ -453,7 +453,7 @@ const defaultOptions = {
   enableHWA: {
     /** @type {boolean} */
     value: typeof PDFJSDev !== "undefined" && !PDFJSDev.test("MOZCENTRAL"),
-    kind: OptionKind.API + OptionKind.VIEWER + OptionKind.PREFERENCE,
+    kind: OptionKind.API + OptionKind.PREFERENCE,
   },
   enableXfa: {
     /** @type {boolean} */
diff --git a/web/pdf_thumbnail_viewer.js b/web/pdf_thumbnail_viewer.js
index 1e11acb94..f2d821cd1 100644
--- a/web/pdf_thumbnail_viewer.js
+++ b/web/pdf_thumbnail_viewer.js
@@ -64,8 +64,6 @@ const SPACE_FOR_DRAG_MARKER_WHEN_NO_NEXT_ELEMENT = 15;
  *   mode.
  * @property {AbortSignal} [abortSignal] - The AbortSignal for the window
  *   events.
- * @property {boolean} [enableHWA] - Enables hardware acceleration for
- *   rendering. The default value is `false`.
  * @property {boolean} [enableSplitMerge] - Enables split and merge features.
  *   The default value is `false`.
  * @property {Object} [statusBar] - The status bar elements to manage the status
@@ -173,7 +171,6 @@ class PDFThumbnailViewer {
     maxCanvasDim,
     pageColors,
     abortSignal,
-    enableHWA,
     enableSplitMerge,
     statusBar,
     undoBar,
@@ -188,7 +185,6 @@ class PDFThumbnailViewer {
     this.maxCanvasPixels = maxCanvasPixels;
     this.maxCanvasDim = maxCanvasDim;
     this.pageColors = pageColors || null;
-    this.enableHWA = enableHWA || false;
     this.#enableSplitMerge = enableSplitMerge || false;
     this.#statusLabel = statusBar?.viewsManagerStatusActionLabel || null;
     this.#statusBar = statusBar?.viewsManagerStatusAction || null;
@@ -415,7 +411,6 @@ class PDFThumbnailViewer {
             maxCanvasPixels: this.maxCanvasPixels,
             maxCanvasDim: this.maxCanvasDim,
             pageColors: this.pageColors,
-            enableHWA: this.enableHWA,
             enableSplitMerge: this.#enableSplitMerge,
           });
           this._thumbnails.push(thumbnail);
diff --git a/web/pdf_viewer.js b/web/pdf_viewer.js
index 3d547667b..68b568b98 100644
--- a/web/pdf_viewer.js
+++ b/web/pdf_viewer.js
@@ -145,8 +145,6 @@ function isValidAnnotationEditorMode(mode) {
  * @property {Object} [pageColors] - Overwrites background and foreground colors
  *   with user defined ones in order to improve readability in high contrast
  *   mode.
- * @property {boolean} [enableHWA] - Enables hardware acceleration for
- *   rendering. The default value is `false`.
  * @property {boolean} [supportsPinchToZoom] - Enable zooming on pinch gesture.
  *   The default value is `true`.
  * @property {boolean} [enableAutoLinking] - Enable creation of hyperlinks from
@@ -245,8 +243,6 @@ class PDFViewer {
 
   #editorUndoBar = null;
 
-  #enableHWA = false;
-
   #enableHighlightFloatingButton = false;
 
   #enablePermissions = false;
@@ -372,7 +368,6 @@ class PDFViewer {
     this.#enablePermissions = options.enablePermissions || false;
     this.pageColors = options.pageColors || null;
     this.#mlManager = options.mlManager || null;
-    this.#enableHWA = options.enableHWA || false;
     this.#supportsPinchToZoom = options.supportsPinchToZoom !== false;
     this.#enableAutoLinking = options.enableAutoLinking !== false;
     this.#minDurationToUpdateCanvas = options.minDurationToUpdateCanvas ?? 500;
@@ -1070,7 +1065,6 @@ class PDFViewer {
             pageColors,
             l10n: this.l10n,
             layerProperties: this._layerProperties,
-            enableHWA: this.#enableHWA,
             enableAutoLinking: this.#enableAutoLinking,
             minDurationToUpdateCanvas: this.#minDurationToUpdateCanvas,
             commentManager: this.#commentManager,