Get the Vulkan instance extensions needed for vkCreateInstance.
char const* const* SDL_Vulkan_GetInstanceExtensions(Uint32 *pCount);| pCount | A pointer to Uint32 that will be filled with the number of extensions returned. |
Returns An array of extension name strings on success, NULL on error.
This should be called after either calling SDL_Vulkan_LoadLibrary() or creating an SDL_Window with the SDL_WINDOW_VULKAN flag.
On return, the variable pointed to by pCount will be set to the number of elements returned, suitable for using with VkInstanceCreateInfo::enabledExtensionCount, and the returned array can be used with VkInstanceCreateInfo::ppEnabledExtensionNames, for calling Vulkan's vkCreateInstance API.
You should not free the returned array; it is owned by SDL.
This function is available since SDL 3.0.0.
// Note: This sample uses C++17 features/syntax.
// Get the required extension count
unsigned int count;
if (!SDL_Vulkan_GetInstanceExtensions(window, &count, nullptr)) handle_error();
std::vector<const char*> extensions = {
VK_EXT_DEBUG_REPORT_EXTENSION_NAME // Sample additional extension
};
size_t additional_extension_count = extensions.size();
extensions.resize(additional_extension_count + count);
if (!SDL_Vulkan_GetInstanceExtensions(window, &count, extensions.data() + additional_extension_count)) handle_error();
// Now we can make the Vulkan instance
VkInstanceCreateInfo create_info = {};
create_info.enabledExtensionCount = static_cast<uint32_t>(extensions.size());
create_info.ppEnabledExtensionNames = extensions.data();
VkInstance instance;
VkResult result = vkCreateInstance(&create_info, nullptr, &instance);