In order for volkLoadDeviceTable to work, we need to load vkGetDeviceProcAddr

In the future we might expose something like volkLoadInstanceDeviceTable
(which would take both instance and device handles), but with the
current interface the only option is to load an extra pointer, which
technically is instance-specific.

Author: zeux

volk.c

@@ -163,6 +163,9 @@ VkDevice volkGetLoadedDevice(void)
 
 void volkLoadInstanceTable(struct VolkInstanceTable* table, VkInstance instance)
 {
+	/* vkGetDeviceProcAddr is used by volkLoadDeviceTable; for now we load this global pointer even though it might be instance-specific */
+	vkGetDeviceProcAddr = (PFN_vkGetDeviceProcAddr)vkGetInstanceProcAddr(instance, "vkGetDeviceProcAddr");
+
 	volkGenLoadInstanceTable(table, instance, vkGetInstanceProcAddrStub);
 }