Bug 1293028 - Check build id only for intel driver. r=mtseng, r=jgilbert

widget/GfxDriverInfo.h

@@ -64,6 +64,7 @@ enum class OperatingSystem {
 
 enum VersionComparisonOp {
   DRIVER_LESS_THAN,             // driver <  version
+  DRIVER_BUILD_ID_LESS_THAN,    // driver build id <  version
   DRIVER_LESS_THAN_OR_EQUAL,    // driver <= version
   DRIVER_GREATER_THAN,          // driver >  version
   DRIVER_GREATER_THAN_OR_EQUAL, // driver >= version

widget/GfxInfoBase.cpp

@@ -733,6 +733,9 @@ GfxInfoBase::FindBlocklistedDeviceInList(const nsTArray<GfxDriverInfo>& info,
     case DRIVER_LESS_THAN:
       match = driverVersion < info[i].mDriverVersion;
       break;
+    case DRIVER_BUILD_ID_LESS_THAN:
+      match = (driverVersion & 0xFFFF) < info[i].mDriverVersion;
+      break;
     case DRIVER_LESS_THAN_OR_EQUAL:
       match = driverVersion <= info[i].mDriverVersion;
       break;

widget/windows/GfxInfo.cpp

@@ -1185,8 +1185,8 @@ GfxInfo::GetGfxDriverInfo()
     // Older than 11-18-2015
     APPEND_TO_DRIVER_BLOCKLIST2(OperatingSystem::Windows,
       (nsAString&) GfxDriverInfo::GetDeviceVendor(VendorIntel), GfxDriverInfo::allDevices,
-      nsIGfxInfo::FEATURE_WEBGL_OPENGL, nsIGfxInfo::FEATURE_DISCOURAGED, DRIVER_LESS_THAN,
-      V(20,19,15,4331), "WEBGL_NATIVE_GL_OLD_INTEL");
+      nsIGfxInfo::FEATURE_WEBGL_OPENGL, nsIGfxInfo::FEATURE_DISCOURAGED, DRIVER_BUILD_ID_LESS_THAN,
+      4331, "WEBGL_NATIVE_GL_OLD_INTEL");
 
     // Older than 2-23-2016
     APPEND_TO_DRIVER_BLOCKLIST2(OperatingSystem::Windows,