Fix vulkan windows; Make test succeed w/o driver

Fix an error in the windows vulkan_sdk library finding.
Also don't fail the vulkan test only because no vulkan
driver is installed (should fix the travis error).

1 files changed, 7 insertions, 7 deletions

diff --git a/test cases/frameworks/17 vulkan/vulkanprog.c b/test cases/frameworks/17 vulkan/vulkanprog.c
index af946defc..1c1c58aae 100644
--- a/test cases/frameworks/17 vulkan/vulkanprog.c
+++ b/test cases/frameworks/17 vulkan/vulkanprog.c
@@ -14,13 +14,13 @@ int main()
         	NULL,
     };
 
+    // we don't actually require instance creation to succeed since
+    // we cannot expect test environments to have a vulkan driver installed.
+    // As long as this does not produce as segmentation fault or similar,
+    // everything's alright.
     VkInstance instance;
-    VkResult ret = vkCreateInstance(&instance_create_info, NULL, &instance);
-    if(ret != VK_SUCCESS) {
-        printf("Could not create vulkan instance: %d\n", ret);
-      	return ret;
-    }
-
-    vkDestroyInstance(instance, NULL);
+    if(vkCreateInstance(&instance_create_info, NULL, &instance) == VK_SUCCESS)
+        vkDestroyInstance(instance, NULL);
+        
     return 0;    
 }
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