tor-browser

commit 0513c93aee2080340797e7e846c4d80ba8190fd6
parent c80ee4f8e66950d59a9f2ccd4b5c79fbaa2e8736
Author: Tom Ritter <tom@mozilla.com>
Date:   Wed, 17 Dec 2025 17:44:38 +0000

Bug 1976287: Add an RFPTarget for making WebGL Vendor constant r=timhuang

Differential Revision: https://phabricator.services.mozilla.com/D276179

Diffstat:
M
dom/canvas/ClientWebGLContext.cpp
 | 
3
+++
M
toolkit/components/resistfingerprinting/RFPTargets.inc
 | 
1
+

2 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/dom/canvas/ClientWebGLContext.cpp b/dom/canvas/ClientWebGLContext.cpp
@@ -2457,6 +2457,9 @@ void ClientWebGLContext::GetParameter(JSContext* cx, GLenum pname,
           case dom::WEBGL_debug_renderer_info_Binding::UNMASKED_VENDOR_WEBGL:
             if (ShouldResistFingerprinting(RFPTarget::WebGLRenderInfo)) {
               ret = Some("Mozilla"_ns);
+            } else if (ShouldResistFingerprinting(
+                           RFPTarget::WebGLVendorConstant)) {
+              ret = Some("Mozilla"_ns);
             } else {
               ret = GetUnmaskedVendor();
               if (ret &&
diff --git a/toolkit/components/resistfingerprinting/RFPTargets.inc b/toolkit/components/resistfingerprinting/RFPTargets.inc
@@ -110,6 +110,7 @@ ITEM_VALUE(NavigatorHWConcurrencyTiered,74)
 ITEM_VALUE(WebGLRandomization,          75)
 ITEM_VALUE(EfficientCanvasRandomization, 76)
 ITEM_VALUE(WebGLVendorSanitize,         77)
+ITEM_VALUE(WebGLVendorConstant,         78)
 
 // !!! Adding a new target? Rename PointerId and repurpose it.