I am trying to run this Nvidia example: https://github.com/nvpro-samples/gl_render_vk_direct_display The problem is that on call:
std::vector<vk::PhysicalDevice> devices = m_instance->enumeratePhysicalDevices();
The application crashes with error
Access violation executing location 0x00007FF953BA88E0
If I check process variables in VS debugger under this location is stored vkEnumeratePhysicalDevices method adresss. The strange thing is if I call Vulkan C API's vkEnumeratePhysicalDevices method directly instead of C++ api call m_instance->enumeratePhysicalDevices() I do not get any access violation message. I little bit suspect that problem could be in the new Vulkan Dynamic loader, but I am just guessing. The loader is executed this way when vk::Instance is created:
vk::DynamicLoader dl;
PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr =
dl.getProcAddress<PFN_vkGetInstanceProcAddr>("vkGetInstanceProcAddr");
VULKAN_HPP_DEFAULT_DISPATCHER.init(vkGetInstanceProcAddr);
// check for required instance extensions
std::vector<vk::ExtensionProperties> availableInstanceExtensions = vk::enumerateInstanceExtensionProperties();
for(const auto& required : requiredInstanceExtensions)
{
bool found = false;
for(const auto& available : availableInstanceExtensions)
{
if(std::string(required) == available.extensionName)
{
found = true;
break;
}
}
if(!found)
{
throw std::exception(("Required instance extension not found: " + std::string(required)).c_str());
}
}
vk::InstanceCreateInfo createInfo{
vk::InstanceCreateFlags(), nullptr, 0, nullptr, uint32_t(requiredInstanceExtensions.size()),
requiredInstanceExtensions.data()};
m_instance = vk::createInstanceUnique(createInfo);
VULKAN_HPP_DEFAULT_DISPATCHER.init(m_instance.get());
Am I doing something wrong upon loading with dynamic dispatcher?
VULKAN_HPP_DEFAULT_DISPATCHER.init(device);
Do I need to do same init with device? Like I saw here https://github.com/KhronosGroup/Vulkan-Hpp/blob/master/tests/DispatchLoaderDynamic/DispatchLoaderDynamic.cpp. It is completely obscure for me because for example in "Vulkan minimal example" the guy is loading via dispatcher just instance proc adresses (https://github.com/dokipen3d/vulkanHppMinimalExample/blob/master/main.cpp).
