Binding allocated return vals need to be Vulkanized before trampoline

[bbredesen]

Error found with GetPhysicalDeviceFeatures2, bug presumably affects any command that requires a structure to be populated by Vulkan.

Current code:

var pFeatures _vkPhysicalDeviceFeatures2
ptr_pFeatures := &pFeatures

execTrampoline(keyvkGetPhysicalDeviceFeatures2, uintptr(physicalDevice), uintptr(unsafe.Pointer(ptr_pFeatures)))

features = *(pFeatures.Goify())

In the example above, Vulkan will silently fail and not modify the struct because pFeatures does not have sType set. (Not sure why it isn't caught by validation layers, but that isn't the issue here.)

Need to modify vk-gen output to allocate that struct and call Vulkanize() before the trampoline call, something like:

pFeatures := (&PhysicalDeviceFeatures2{}).Vulkanize()

execTrampoline(keyvkGetPhysicalDeviceFeatures2, uintptr(physicalDevice), uintptr(unsafe.Pointer(pFeatures)))

features = *(pFeatures.Goify())
return