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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /devtools/client/shared/webgl-utils.js
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'devtools/client/shared/webgl-utils.js')
-rw-r--r--devtools/client/shared/webgl-utils.js53
1 files changed, 53 insertions, 0 deletions
diff --git a/devtools/client/shared/webgl-utils.js b/devtools/client/shared/webgl-utils.js
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+++ b/devtools/client/shared/webgl-utils.js
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const WEBGL_CONTEXT_NAME = "experimental-webgl";
+
+function isWebGLForceEnabled() {
+ return Services.prefs.getBoolPref("webgl.force-enabled");
+}
+
+function isWebGLSupportedByGFX() {
+ let supported = false;
+
+ try {
+ const gfxInfo = Cc["@mozilla.org/gfx/info;1"].getService(Ci.nsIGfxInfo);
+ const angle = gfxInfo.FEATURE_WEBGL_ANGLE;
+ const opengl = gfxInfo.FEATURE_WEBGL_OPENGL;
+
+ // if either the Angle or OpenGL renderers are available, WebGL should work
+ supported =
+ gfxInfo.getFeatureStatus(angle) === gfxInfo.FEATURE_STATUS_OK ||
+ gfxInfo.getFeatureStatus(opengl) === gfxInfo.FEATURE_STATUS_OK;
+ } catch (e) {
+ return false;
+ }
+ return supported;
+}
+
+function create3DContext(canvas) {
+ // try to get a valid context from an existing canvas
+ let context = null;
+ try {
+ context = canvas.getContext(WEBGL_CONTEXT_NAME);
+ } catch (e) {
+ return null;
+ }
+ return context;
+}
+
+function createCanvas(doc) {
+ return doc.createElementNS("http://www.w3.org/1999/xhtml", "canvas");
+}
+
+function isWebGLSupported(doc) {
+ const supported =
+ !isWebGLForceEnabled() &&
+ isWebGLSupportedByGFX() &&
+ create3DContext(createCanvas(doc));
+
+ return supported;
+}
+exports.isWebGLSupported = isWebGLSupported;