Better declare GetObjectType()'s lack of 32 bit support

Create a new default specialization for 32 bit which indicates to the
user that the GetObjectType() helper does not work in 32 bit builds.

include/vulkan/utility/vk_struct_helper.hpp

@@ -1038,13 +1038,12 @@ class InitStructHelper {
         return InitStruct<T>(p_next);
     }
 };
-
+#if VK_USE_64_BIT_PTR_DEFINES == 1
 template<typename T> VkObjectType GetObjectType() {
     static_assert(sizeof(T) == 0, "GetObjectType() is being used with an unsupported Type! Is the code-gen up to date?");
     return VK_OBJECT_TYPE_UNKNOWN;
 }
 
-#if VK_USE_64_BIT_PTR_DEFINES == 1
 template<> inline VkObjectType GetObjectType<VkBuffer>() { return VK_OBJECT_TYPE_BUFFER; }
 template<> inline VkObjectType GetObjectType<VkImage>() { return VK_OBJECT_TYPE_IMAGE; }
 template<> inline VkObjectType GetObjectType<VkInstance>() { return VK_OBJECT_TYPE_INSTANCE; }
@@ -1098,7 +1097,12 @@ template<> inline VkObjectType GetObjectType<VkMicromapEXT>() { return VK_OBJECT
 template<> inline VkObjectType GetObjectType<VkOpticalFlowSessionNV>() { return VK_OBJECT_TYPE_OPTICAL_FLOW_SESSION_NV; }
 template<> inline VkObjectType GetObjectType<VkShaderEXT>() { return VK_OBJECT_TYPE_SHADER_EXT; }
 
-#endif // VK_USE_64_BIT_PTR_DEFINES == 1
+# else // 32 bit
+template<typename T> VkObjectType GetObjectType() {
+    static_assert(sizeof(T) == 0, "GetObjectType() does not support 32 bit builds! This is a limitation of the vulkan.h headers");
+    return VK_OBJECT_TYPE_UNKNOWN;
+}
+# endif // VK_USE_64_BIT_PTR_DEFINES == 1
 } // namespace vku
 
 // NOLINTEND// clang-format on

scripts/generators/struct_helper_generator.py

@@ -123,20 +123,24 @@ class InitStructHelper {
         return InitStruct<T>(p_next);
     }
 };
-
+#if VK_USE_64_BIT_PTR_DEFINES == 1
 template<typename T> VkObjectType GetObjectType() {
     static_assert(sizeof(T) == 0, "GetObjectType() is being used with an unsupported Type! Is the code-gen up to date?");
     return VK_OBJECT_TYPE_UNKNOWN;
 }
 
-#if VK_USE_64_BIT_PTR_DEFINES == 1
 ''')
         for handle in self.vk.handles.values():
             out.extend(guard_helper.add_guard(handle.protect))
             out.append(f'template<> inline VkObjectType GetObjectType<{handle.name}>() {{ return {handle.type}; }}\n')
         out.extend(guard_helper.add_guard(None))
         out.append('''
-#endif // VK_USE_64_BIT_PTR_DEFINES == 1
+# else // 32 bit
+template<typename T> VkObjectType GetObjectType() {
+    static_assert(sizeof(T) == 0, "GetObjectType() does not support 32 bit builds! This is a limitation of the vulkan.h headers");
+    return VK_OBJECT_TYPE_UNKNOWN;
+}
+# endif // VK_USE_64_BIT_PTR_DEFINES == 1
 } // namespace vku
 \n''')