[PATCH 3/4] winevulkan: Return NULL for unavailable instance functions.

[Georg Lehmann]

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=49542
Signed-off-by: Georg Lehmann <dadschoorse at gmail.com>
---
 dlls/winevulkan/loader.c         | 6 ++++++
 dlls/winevulkan/make_vulkan      | 4 ++++
 dlls/winevulkan/vulkan.c         | 5 +++++
 dlls/winevulkan/vulkan_private.h | 2 ++
 4 files changed, 17 insertions(+)

diff --git a/dlls/winevulkan/loader.c b/dlls/winevulkan/loader.c
index 6bc32620bba..4857a0adc7a 100644
--- a/dlls/winevulkan/loader.c
+++ b/dlls/winevulkan/loader.c
@@ -116,6 +116,9 @@ PFN_vkVoidFunction WINAPI vkGetInstanceProcAddr(VkInstance instance, const char
         return NULL;
     }
 
+    if (!unix_funcs->p_is_available_instance_function(instance, name))
+        return NULL;
+
     func = wine_vk_get_instance_proc_addr(name);
     if (func) return func;
 
@@ -175,6 +178,9 @@ void * WINAPI vk_icdGetPhysicalDeviceProcAddr(VkInstance instance, const char *n
 {
     TRACE("%p, %s\n", instance, debugstr_a(name));
 
+    if (!unix_funcs->p_is_available_instance_function(instance, name))
+        return NULL;
+
     return wine_vk_get_phys_dev_proc_addr(name);
 }
 
diff --git a/dlls/winevulkan/make_vulkan b/dlls/winevulkan/make_vulkan
index e8534cbd5f5..ec2049c85eb 100755
--- a/dlls/winevulkan/make_vulkan
+++ b/dlls/winevulkan/make_vulkan
@@ -2776,6 +2776,7 @@ class VkGenerator(object):
                 continue
 
             f.write("    &{1}{0},\n".format(vk_func.name, prefix))
+        f.write("    &wine_vk_is_available_instance_function,\n")
         f.write("};\n")
 
     def generate_thunks_h(self, f, prefix):
@@ -2976,6 +2977,9 @@ class VkGenerator(object):
                 continue
 
             f.write("    {0};\n".format(vk_func.pfn(conv=False, call_conv="WINAPI")))
+        f.write("\n")
+        f.write("    /* winevulkan specific functions */\n")
+        f.write("    BOOL (WINAPI *p_is_available_instance_function)(VkInstance, const char *);\n")
         f.write("};\n\n")
 
         f.write("#endif /* __WINE_VULKAN_LOADER_THUNKS_H */\n")
diff --git a/dlls/winevulkan/vulkan.c b/dlls/winevulkan/vulkan.c
index fb0ffbdfe6c..3658a4378cb 100644
--- a/dlls/winevulkan/vulkan.c
+++ b/dlls/winevulkan/vulkan.c
@@ -1605,3 +1605,8 @@ void WINAPI wine_vkDestroyDebugReportCallbackEXT(
 
     free(object);
 }
+
+BOOL WINAPI wine_vk_is_available_instance_function(VkInstance instance, const char *name)
+{
+    return !!vk_funcs->p_vkGetInstanceProcAddr(instance->instance, name);
+}
diff --git a/dlls/winevulkan/vulkan_private.h b/dlls/winevulkan/vulkan_private.h
index 83dc90ca15e..ce83b2b7032 100644
--- a/dlls/winevulkan/vulkan_private.h
+++ b/dlls/winevulkan/vulkan_private.h
@@ -212,4 +212,6 @@ uint64_t wine_vk_unwrap_handle(VkObjectType type, uint64_t handle) DECLSPEC_HIDD
 
 extern const struct unix_funcs loader_funcs;
 
+BOOL WINAPI wine_vk_is_available_instance_function(VkInstance instance, const char *name) DECLSPEC_HIDDEN;
+
 #endif /* __WINE_VULKAN_PRIVATE_H */
-- 
2.32.0