Bug 1609191 - Disable webrender on devices affected by Adreno shader compilation crash. r=nical

We encounter frequent crashes in glLinkProgram on some Adreno
devices. This is likely due to a driver bug, but we have been unable
to figure out the exact cause and work around it.

According to the crash data, this bug appears to affect Adreno 505 and
506 devices running Android 9 only. Disable webrender on these devices
in order to avoid the crash.

Depends on D114949

Differential Revision: https://phabricator.services.mozilla.com/D114950

widget/android/GfxInfo.cpp

@@ -599,12 +599,20 @@ nsresult GfxInfo::GetFeatureStatusImpl(
       const nsCString& gpu = mGLStrings->Renderer();
       NS_LossyConvertUTF16toASCII model(mModel);
 
-      // Enable Webrender on all Adreno 3xx, 4xx, 5xx and 6xx GPUs
+      // Enable Webrender on all Adreno 3xx, 4xx, and 6xx GPUs
       isUnblocked |= gpu.Find("Adreno (TM) 3", /*ignoreCase*/ true) >= 0 ||
                      gpu.Find("Adreno (TM) 4", /*ignoreCase*/ true) >= 0 ||
-                     gpu.Find("Adreno (TM) 5", /*ignoreCase*/ true) >= 0 ||
                      gpu.Find("Adreno (TM) 6", /*ignoreCase*/ true) >= 0;
 
+      // Enable Webrender on all Adreno 5xx GPUs...
+      isUnblocked |=
+          gpu.Find("Adreno (TM) 5", /*ignoreCase*/ true) >= 0 &&
+          // Excluding 505 and 506 on Android 9 due to crashes during
+          // shader compilation. See bug 1609191.
+          !((gpu.Find("Adreno (TM) 505", /*ignoreCase*/ true) >= 0 ||
+             gpu.Find("Adreno (TM) 506", /*ignoreCase*/ true) >= 0) &&
+            mSDKVersion == 28);
+
       // Enable Webrender on all Mali-Txxx GPUs
       isUnblocked |= gpu.Find("Mali-T", /*ignoreCase*/ true) >= 0;