Use MACROS to make functions C-compatible

Author: MuAlphaOmegaEpsilon

include/vengine/vulkan.hpp

@@ -31,6 +31,9 @@ namespace vengine::vulkan
 #include <vengine/vulkan/defaults.hpp>
 #include <vengine/vulkan/enumerate.hpp>
 
+#define UNARYPRED(NAME, T) bool (*const NAME)(const T&)
+#define UNARYSCORE(NAME, T) ui32 (*const NAME)(const T&)
+
 extern "C" namespace vengine::vulkan
 {   using namespace VE_VK::defaults;
     using namespace vengine::algorithm;
@@ -39,10 +42,13 @@ extern "C" namespace vengine::vulkan
                         (const char* appName,
                          ui32 appVersion) NX;
     ND INL VkError pickPhysicalDevice
-                        (UnaryPred<VkPhysicalDevice> f = VE_VK_DE::isDeviceSuitable,
-                         UnaryScore<VkPhysicalDevice> s = VE_VK_DE::scoreDevice) NX;
+                        (UNARYPRED(f, VkPhysicalDevice) = VE_VK_DE::isDeviceSuitable,
+                         UNARYSCORE(s, VkPhysicalDevice) = VE_VK_DE::scoreDevice) NX;
 }
 
+#undef UNARYPRED
+#undef UNARYSCORE
+
 void VE_VK::destroy () NX
 {   using namespace VE_VK;
     vkDestroyInstance (instance, allocator);