glfw.c3l and vulkan.c3l are incompatible

[fesoliveira014]

Hi there, the vendor glfw.c3l and vulkan.c3l seem to be incompatible with each other. glfw.c3l seems to have been developed with a different Vulkan binding, and using them together causes some issues.

gflw.c3l depends on Vulkan bindings for declaring 3 functions:

import vulkan;

fn GlfwVkProc getInstanceProcAddress(vk::Instance instance, ZString procname) 
  @cname("glfwGetInstanceProcAddress");

fn int getPhysicalDevicePresentationSupport(vk::Instance instance, vk::PhysicalDevice device, uint queuefamily) 
  @cname("glfwGetPhysicalDevicePresentationSupport");

fn vk::Result createWindowSurface(vk::Instance instance, GlfwWindow* window, vk::AllocationCallbacks* allocator, vk::SurfaceKHR* surface) 
  @cname("glfwCreateWindowSurface");

Here glfw.c3l expects Vulkan types to be declared as vk::Instance, vk::Result, etc. However, vulkan.c3l declares them as vk::VkInstance, vk::VkResult, etc. That can be easily fixed by changing the glfw.c3l types to match the vulkan.c3l types, but there is no vulkan.c3l equivalent for vk::SurfaceKHR.