Add missing capability when QueueFamily scope is used

Also, if this capability is added and the memory model is not
otherwise enabled by pragma, enable it as part of postprocessing.

SPIRV/GlslangToSpv.cpp

@@ -6996,6 +6996,10 @@ spv::Id TGlslangToSpvTraverser::createAtomicOperation(glslang::TOperator op, spv
         builder.addCapability(spv::CapabilityVulkanMemoryModelKHR);
     }
 
+    if (builder.getConstantScalar(scopeId) == spv::ScopeQueueFamily) {
+        builder.addCapability(spv::CapabilityVulkanMemoryModelKHR);
+    }
+
     if (glslangIntermediate->usingVulkanMemoryModel() && builder.getConstantScalar(scopeId) == spv::ScopeDevice) {
         builder.addCapability(spv::CapabilityVulkanMemoryModelDeviceScopeKHR);
     }