diff --git a/util/test/demos/vk/vk_workgroup_zoo.cpp b/util/test/demos/vk/vk_workgroup_zoo.cpp
index b3855e2fe..d12d61bac 100644
--- a/util/test/demos/vk/vk_workgroup_zoo.cpp
+++ b/util/test/demos/vk/vk_workgroup_zoo.cpp
@@ -130,7 +130,7 @@ void main()
 {
   vec4 data = vec4(0);
   uint id = gl_SubgroupInvocationID;
-  gsmUint4[id] = id;
+  gsmUint4[id] = id.xxxx;
   SetOutput(data);
 
   if(IsTest(0))
diff --git a/util/test/rdtest/shared/Subgroup_Zoo.py b/util/test/rdtest/shared/Subgroup_Zoo.py
index a912fa699..d6943c826 100644
--- a/util/test/rdtest/shared/Subgroup_Zoo.py
+++ b/util/test/rdtest/shared/Subgroup_Zoo.py
@@ -272,4 +272,6 @@ class Subgroup_Zoo(rdtest.TestCase):
         overallFailed |= self.check_compute_tests(compute_dims, thread_checks)
 
         if overallFailed:
-            raise rdtest.TestFailureException("Some tests were not as expected")
\ No newline at end of file
+            raise rdtest.TestFailureException("Some tests were not as expected")
+
+        self.check_renderdoc_log()
\ No newline at end of file
diff --git a/util/test/rdtest/shared/Workgroup_Zoo.py b/util/test/rdtest/shared/Workgroup_Zoo.py
index c6d33331a..dc28f22f1 100644
--- a/util/test/rdtest/shared/Workgroup_Zoo.py
+++ b/util/test/rdtest/shared/Workgroup_Zoo.py
@@ -25,4 +25,6 @@ class Workgroup_Zoo(rdtest.Subgroup_Zoo):
         ]
 
         if self.check_compute_tests(compute_dims, thread_checks):
-            raise rdtest.TestFailureException("Some tests were not as expected")
\ No newline at end of file
+            raise rdtest.TestFailureException("Some tests were not as expected")
+
+        self.check_renderdoc_log()