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use crate::ffi::vk::*;
use super::error::Result;
use super::error::ErrorCode;
use super::instance::{Instance, QueueFamily, PhysicalDevice, PhysicalDevicesBuilder};
use super::device::{Device, Queue};
use super::surface::{Surface};
use std::ptr;
use std::mem;
use std::mem::MaybeUninit;
use libc::{c_float, c_void, c_char};
use std::sync::Arc;
use std::ffi::CString;
enum DeviceQueuesCapabilities {
Default,
RayTracing,
}
impl DeviceQueuesCapabilities {
fn extension_names(&self) -> Vec<CString> {
match &self {
&Self::Default => vec![
CString::new("VK_KHR_swapchain").unwrap(),
],
&Self::RayTracing => vec![
CString::new("VK_KHR_swapchain").unwrap(),
CString::new("VK_KHR_ray_tracing").unwrap(),
CString::new("VK_KHR_dedicated_allocation").unwrap(),
CString::new("VK_KHR_get_memory_requirements2").unwrap(),
CString::new("VK_KHR_buffer_device_address").unwrap(),
CString::new("VK_KHR_deferred_host_operations").unwrap(),
CString::new("VK_EXT_descriptor_indexing").unwrap(),
CString::new("VK_KHR_pipeline_library").unwrap(),
],
}
}
}
pub struct DeviceQueuesBuilder {
surface: Arc<Surface>,
capabilities: DeviceQueuesCapabilities,
}
impl DeviceQueuesBuilder {
pub fn new(surface: &Arc<Surface>) -> Self {
DeviceQueuesBuilder {
surface: Arc::clone(surface),
capabilities: DeviceQueuesCapabilities::Default,
}
}
pub fn with_raytracing(self) -> Self {
DeviceQueuesBuilder {
surface: self.surface,
capabilities: DeviceQueuesCapabilities::RayTracing,
}
}
pub fn build(self) -> Result<Arc<DeviceQueues>> {
let surface = &self.surface;
let instance = surface.instance();
let physical_devices = PhysicalDevicesBuilder::new(instance).build()?;
let physical_device = physical_devices.into_iter()
.nth(0)
.ok_or_else(|| ErrorCode::SuitablePhysicalDeviceNotFound)?;
let families = physical_device.queue_families()?;
let graphics_family = families.iter()
.find(|v| v.is_graphics());
let present_family = families.iter()
.find(|v| surface.is_supported(v, &physical_device).unwrap_or(false));
let (graphics_family, present_family) = graphics_family
.and_then(|a| present_family.map(|b| (a, b)))
.ok_or_else(|| ErrorCode::SuitableQueueFamilyNotFound)?;
let extension_names = self.capabilities.extension_names();
let extension_name_ptrs: Vec<*const c_char> = extension_names.iter()
.map(|v| v.as_ptr())
.collect();
let priority: c_float = 0.0;
if (graphics_family as *const QueueFamily) == (present_family as *const QueueFamily) {
log_debug!("Unique family");
let family = graphics_family;
let family_index = family.index();
let queue_create_info = VkDeviceQueueCreateInfo::new(family_index, 1, &priority);
let device_create_info = unsafe { VkDeviceCreateInfo::new(1, &queue_create_info, &extension_name_ptrs) };
unsafe {
let mut handle = MaybeUninit::<VkDevice>::zeroed();
vkCreateDevice(physical_device.handle(), &device_create_info, std::ptr::null(), handle.as_mut_ptr())
.into_result()?;
let handle = handle.assume_init();
let device = Device::new(handle, &physical_device);
let mut queue = MaybeUninit::<VkQueue>::zeroed();
vkGetDeviceQueue(device.handle(), family_index, 0, queue.as_mut_ptr());
let queue = queue.assume_init();
let queue = Queue::new(queue, family.clone(), &device);
let device_queues = DeviceQueues::new(instance, device, &queue, &queue);
Ok(device_queues)
}
} else {
let queue_create_infos = vec![
VkDeviceQueueCreateInfo::new(graphics_family.index(), 1, &priority),
VkDeviceQueueCreateInfo::new(present_family.index(), 1, &priority),
];
let device_create_info = unsafe {
VkDeviceCreateInfo::new(
queue_create_infos.len() as u32,
queue_create_infos.as_ptr(),
&extension_name_ptrs)
};
unsafe {
let mut handle = MaybeUninit::<VkDevice>::zeroed();
vkCreateDevice(physical_device.handle(), &device_create_info, std::ptr::null(), handle.as_mut_ptr())
.into_result()?;
let handle = handle.assume_init();
let device = Device::new(handle, &physical_device);
let mut graphics_queue = MaybeUninit::<VkQueue>::zeroed();
vkGetDeviceQueue(device.handle(), graphics_family.index(), 0, graphics_queue.as_mut_ptr());
let graphics_queue = graphics_queue.assume_init();
let graphics_queue = Queue::new(graphics_queue, graphics_family.clone(), &device);
let mut present_queue = MaybeUninit::<VkQueue>::zeroed();
vkGetDeviceQueue(device.handle(), present_family.index(), 1, present_queue.as_mut_ptr());
let present_queue = present_queue.assume_init();
let present_queue = Queue::new(present_queue, present_family.clone(), &device);
let device_queues = DeviceQueues::new(instance, device, &graphics_queue, &present_queue);
Ok(device_queues)
}
}
}
}
pub struct DeviceQueues {
instance: Arc<Instance>,
device: Arc<Device>,
graphics_queue: Arc<Queue>,
present_queue: Arc<Queue>,
}
impl DeviceQueues {
fn new(instance: &Arc<Instance>, device: Arc<Device>, graphics_queue: &Arc<Queue>, present_queue: &Arc<Queue>) -> Arc<Self> {
let device_queues = DeviceQueues {
instance: Arc::clone(instance),
device,
graphics_queue: Arc::clone(graphics_queue),
present_queue: Arc::clone(present_queue),
};
Arc::new(device_queues)
}
#[inline]
pub fn instance(&self) -> &Arc<Instance> {
&self.instance
}
#[inline]
pub fn device(&self) -> &Arc<Device> {
&self.device
}
#[inline]
pub fn graphics_queue(&self) -> &Arc<Queue> {
&self.graphics_queue
}
#[inline]
pub fn present_queue(&self) -> &Arc<Queue> {
&self.present_queue
}
pub fn is_sharing_exclusive(&self) -> bool {
std::ptr::eq(
self.graphics_queue.as_ref() as *const Queue,
self.present_queue.as_ref() as *const Queue)
}
}