winevulkan: Expose driver vkGetInstanceProcAddr via winevulkan exports.

dlls/winevulkan/make_vulkan

@@ -2282,6 +2282,7 @@ class VkGenerator(object):
         self._generate_copyright(f, spec_file=True)
         f.write("@ stdcall vk_icdGetInstanceProcAddr(ptr str) wine_vk_icdGetInstanceProcAddr\n")
         f.write("@ stdcall vk_icdNegotiateLoaderICDInterfaceVersion(ptr) wine_vk_icdNegotiateLoaderICDInterfaceVersion\n")
+        f.write("@ cdecl -norelay native_vkGetInstanceProcAddrWINE(ptr str)\n")
 
         # Export symbols for all Vulkan Core functions.
         for func in self.registry.funcs.values():

dlls/winevulkan/vulkan.c

@@ -1163,3 +1163,13 @@ static void *wine_vk_get_global_proc_addr(const char *name)
     }
     return NULL;
 }
+
+/*
+ * Wrapper around driver vkGetInstanceProcAddr implementation.
+ * Allows winelib applications to access Vulkan functions with Wine
+ * additions and native ABI.
+ */
+void *native_vkGetInstanceProcAddrWINE(VkInstance instance, const char *name)
+{
+    return vk_funcs->p_vkGetInstanceProcAddr(instance, name);
+}

dlls/winevulkan/winevulkan.spec

@@ -36,6 +36,7 @@
 
 @ stdcall vk_icdGetInstanceProcAddr(ptr str) wine_vk_icdGetInstanceProcAddr
 @ stdcall vk_icdNegotiateLoaderICDInterfaceVersion(ptr) wine_vk_icdNegotiateLoaderICDInterfaceVersion
+@ cdecl -norelay native_vkGetInstanceProcAddrWINE(ptr str)
 @ stdcall wine_vkAcquireNextImage2KHR(ptr ptr ptr)
 @ stdcall wine_vkAcquireNextImageKHR(ptr int64 int64 int64 int64 ptr)
 @ stdcall wine_vkAllocateCommandBuffers(ptr ptr ptr)