extern crate vulkano;
extern crate vk_sys;
extern crate glfw;
use std::sync::Arc;
use std::ptr;
use std::error;
use std::fmt;
use std::ffi::CString;
use vulkano::VulkanObject;
use vulkano::instance::{Instance, InstanceExtensions, RawInstanceExtensions, QueueFamily};
use vulkano::swapchain::{Surface};
use glfw::{Window, Context, Glfw};
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub enum VulkanoGlfwError {
GlfwError{ code: u32 },
NoExtensions,
}
impl error::Error for VulkanoGlfwError {
#[inline]
fn description(&self) -> &str {
match *self {
VulkanoGlfwError::GlfwError{..} => "Genral Vulkan GLFW error",
VulkanoGlfwError::NoExtensions => "Could not load required extensions",
}
}
#[inline]
fn cause(&self) -> Option<&dyn error::Error> {
match *self {
_ => None,
}
}
}
impl fmt::Display for VulkanoGlfwError {
#[inline]
fn fmt(&self, fmt: &mut fmt::Formatter) -> Result<(), fmt::Error> {
write!(fmt, "{}", self)
}
}
pub fn create_window_surface(instance: Arc<Instance>, window: Window ) -> Result<Arc<Surface<Window>>, VulkanoGlfwError> {
let internal_instance = instance.as_ref().internal_object();
let internal_window = window.window_ptr();
let mut internal_surface: vk_sys::SurfaceKHR = 0;
let result = unsafe {
glfw::ffi::glfwCreateWindowSurface(internal_instance, internal_window, ptr::null(), &mut internal_surface as *mut u64 )
};
if result != vk_sys::SUCCESS {
return Err(VulkanoGlfwError::GlfwError { code: result });
}
Ok(Arc::new(unsafe {
Surface::from_raw_surface(instance, internal_surface, window)
}))
}
pub fn get_required_instance_extensions(glfw: &Glfw) -> Result<InstanceExtensions, VulkanoGlfwError> {
get_required_raw_instance_extensions(glfw).and_then(|rie| {
Ok(InstanceExtensions::from(&rie))
})
}
pub fn get_required_raw_instance_extensions(glfw: &Glfw) -> Result<RawInstanceExtensions, VulkanoGlfwError> {
let exts = glfw.get_required_instance_extensions();
if exts.is_none() {
return Err(VulkanoGlfwError::NoExtensions);
}
let iter = exts.unwrap().into_iter().map(|s| {
let new_c_string = CString::new(s);
new_c_string.unwrap()
});
Ok(RawInstanceExtensions::new(iter))
}
pub fn get_physical_device_presentation_support(glfw: &Glfw, family: &QueueFamily) -> bool {
let device = family.physical_device();
let internal_device = device.internal_object();
let instance = device.instance();
let internal_instance = instance.as_ref().internal_object();
glfw.get_physical_device_presentation_support_raw(internal_instance, internal_device, family.id())
}