Brendan Shanks : winevulkan: Fix vkEnumerateInstanceExtensionProperties() behavior when no Vulkan driver is present.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: c5675ec615a5c2cd01a933fbf37f532a7aa0ce66
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=c5675ec615a5c2cd01a933fbf...

Author: Brendan Shanks <bshanks(a)codeweavers.com>
Date:   Fri Aug 14 15:43:48 2020 -0700

winevulkan: Fix vkEnumerateInstanceExtensionProperties() behavior when no Vulkan driver is present.

Signed-off-by: Brendan Shanks <bshanks(a)codeweavers.com>
Signed-off-by: Liam Middlebrook <lmiddlebrook(a)nvidia.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/winevulkan/vulkan.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/dlls/winevulkan/vulkan.c b/dlls/winevulkan/vulkan.c
index 1b359d22c8..9f8e2451ad 100644
--- a/dlls/winevulkan/vulkan.c
+++ b/dlls/winevulkan/vulkan.c
@@ -793,7 +793,10 @@ VkResult WINAPI wine_vkEnumerateInstanceExtensionProperties(const char *layer_na
 
     wine_vk_init_once();
     if (!vk_funcs)
-        return VK_ERROR_INITIALIZATION_FAILED;
+    {
+        *count = 0;
+        return VK_SUCCESS;
+    }
 
     res = vk_funcs->p_vkEnumerateInstanceExtensionProperties(NULL, &num_host_properties, NULL);
     if (res != VK_SUCCESS)