1 files changed, 23 insertions, 24 deletions

diff --git a/widget/windows/GfxInfo.cpp b/widget/windows/GfxInfo.cpp
index ae66e5feaa..633ed88921 100644
--- a/widget/windows/GfxInfo.cpp
+++ b/widget/windows/GfxInfo.cpp
@@ -1173,25 +1173,6 @@ static OperatingSystem WindowsVersionToOperatingSystem(
   }
 }
 
-static bool OnlyAllowFeatureOnWhitelistedVendor(int32_t aFeature) {
-  switch (aFeature) {
-    // The GPU process doesn't need hardware acceleration and can run on
-    // devices that we normally block from not being on our whitelist.
-    case nsIGfxInfo::FEATURE_GPU_PROCESS:
-    // We can mostly assume that ANGLE will work
-    case nsIGfxInfo::FEATURE_DIRECT3D_11_ANGLE:
-    // Remote WebGL is needed for Win32k Lockdown, so it should be enabled
-    // regardless of HW support or not
-    case nsIGfxInfo::FEATURE_ALLOW_WEBGL_OUT_OF_PROCESS:
-    // Backdrop filter should generally work, especially if we fall back to
-    // Software WebRender because of an unknown vendor.
-    case nsIGfxInfo::FEATURE_BACKDROP_FILTER:
-      return false;
-    default:
-      return true;
-  }
-}
-
 // Return true if the CPU supports AVX, but the operating system does not.
 #if defined(_M_X64)
 static inline bool DetectBrokenAVX() {
@@ -1920,12 +1901,16 @@ nsresult GfxInfo::GetFeatureStatusImpl(
     if (NS_FAILED(GetAdapterVendorID(adapterVendorID)) ||
         NS_FAILED(GetAdapterDeviceID(adapterDeviceID)) ||
         NS_FAILED(GetAdapterDriverVersion(adapterDriverVersionString))) {
-      aFailureId = "FEATURE_FAILURE_GET_ADAPTER";
-      *aStatus = FEATURE_BLOCKED_DEVICE;
+      if (OnlyAllowFeatureOnKnownConfig(aFeature)) {
+        aFailureId = "FEATURE_FAILURE_GET_ADAPTER";
+        *aStatus = FEATURE_BLOCKED_DEVICE;
+      } else {
+        *aStatus = FEATURE_STATUS_OK;
+      }
       return NS_OK;
     }
 
-    if (OnlyAllowFeatureOnWhitelistedVendor(aFeature) &&
+    if (OnlyAllowFeatureOnKnownConfig(aFeature) &&
         !adapterVendorID.Equals(
             GfxDriverInfo::GetDeviceVendor(DeviceVendor::Intel),
             nsCaseInsensitiveStringComparator) &&
@@ -1974,10 +1959,24 @@ nsresult GfxInfo::GetFeatureStatusImpl(
       return NS_OK;
     }
 
+    if (adapterDriverVersionString.Length() == 0) {
+      if (OnlyAllowFeatureOnKnownConfig(aFeature)) {
+        aFailureId = "FEATURE_FAILURE_EMPTY_DRIVER_VERSION";
+        *aStatus = FEATURE_BLOCKED_DRIVER_VERSION;
+      } else {
+        *aStatus = FEATURE_STATUS_OK;
+      }
+      return NS_OK;
+    }
+
     uint64_t driverVersion;
     if (!ParseDriverVersion(adapterDriverVersionString, &driverVersion)) {
-      aFailureId = "FEATURE_FAILURE_PARSE_DRIVER";
-      *aStatus = FEATURE_BLOCKED_DRIVER_VERSION;
+      if (OnlyAllowFeatureOnKnownConfig(aFeature)) {
+        aFailureId = "FEATURE_FAILURE_PARSE_DRIVER";
+        *aStatus = FEATURE_BLOCKED_DRIVER_VERSION;
+      } else {
+        *aStatus = FEATURE_STATUS_OK;
+      }
       return NS_OK;
     }
   }