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|
#![allow(unsafe_code)]
use ash::vk;
use fparkan_platform::RenderRequest;
use std::ffi::CString;
use super::capabilities::{
select_live_device_candidate_for_request, unique_queue_families, VulkanRuntimeCapabilityError,
VulkanRuntimeCapabilityProbe,
};
use super::{VulkanInstanceProbe, VulkanSurfaceProbe};
/// Created Vulkan logical device probe.
pub struct VulkanLogicalDeviceProbe {
device: ash::Device,
physical_device: vk::PhysicalDevice,
/// Runtime capability report used for device selection.
pub runtime: VulkanRuntimeCapabilityProbe,
/// Deterministic logical device creation report.
pub report: VulkanLogicalDeviceReport,
}
impl Drop for VulkanLogicalDeviceProbe {
fn drop(&mut self) {
// SAFETY: The logical device was created by this probe and is destroyed once during drop.
unsafe { self.device.destroy_device(None) };
}
}
impl VulkanLogicalDeviceProbe {
/// Returns the graphics queue selected by the Stage 0 policy.
#[must_use]
pub fn graphics_queue(&self) -> vk::Queue {
// SAFETY: The queue-family index belongs to this live logical device.
unsafe {
self.device
.get_device_queue(self.report.graphics_queue_family, 0)
}
}
/// Returns the presentation queue selected by the Stage 0 policy.
#[must_use]
pub fn present_queue(&self) -> vk::Queue {
// SAFETY: The queue-family index belongs to this live logical device.
unsafe {
self.device
.get_device_queue(self.report.present_queue_family, 0)
}
}
/// Returns a shared reference to the live logical device.
#[must_use]
pub fn device(&self) -> &ash::Device {
&self.device
}
/// Returns the selected physical device handle.
#[must_use]
pub fn physical_device(&self) -> vk::PhysicalDevice {
self.physical_device
}
}
/// Logical device creation report.
#[derive(Clone, Debug, Eq, PartialEq)]
pub struct VulkanLogicalDeviceReport {
/// Report schema version.
pub schema: u32,
/// Selected physical device name.
pub device_name: String,
/// Graphics queue-family index used by the logical device.
pub graphics_queue_family: u32,
/// Present queue-family index used by the logical device.
pub present_queue_family: u32,
/// Enabled device extensions.
pub enabled_extensions: Vec<String>,
}
/// Vulkan logical device creation error.
#[derive(Clone, Debug, Eq, PartialEq)]
pub enum VulkanLogicalDeviceError {
/// Runtime capability probing failed.
Runtime(VulkanRuntimeCapabilityError),
/// Device extension name contained an interior NUL byte.
InvalidExtensionName {
/// Invalid extension name.
extension: String,
},
/// Logical device creation failed.
CreateFailed {
/// Selected device name.
device: String,
/// Vulkan result.
result: vk::Result,
},
}
impl std::fmt::Display for VulkanLogicalDeviceError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Self::Runtime(error) => write!(f, "{error}"),
Self::InvalidExtensionName { extension } => write!(
f,
"Vulkan device extension name contains an interior NUL byte: {extension:?}"
),
Self::CreateFailed { device, result } => {
write!(
f,
"Vulkan logical device creation failed for {device}: {result:?}"
)
}
}
}
}
impl std::error::Error for VulkanLogicalDeviceError {}
/// Creates a Vulkan logical device for the selected live surface-capable device.
///
/// # Errors
///
/// Returns [`VulkanLogicalDeviceError`] when runtime capability probing fails,
/// device extension names are invalid, or `vkCreateDevice` fails.
pub fn create_vulkan_logical_device_probe(
instance: &VulkanInstanceProbe,
surface: &VulkanSurfaceProbe,
drawable_extent: (u32, u32),
) -> Result<VulkanLogicalDeviceProbe, VulkanLogicalDeviceError> {
create_vulkan_logical_device_probe_for_request(
instance,
surface,
drawable_extent,
RenderRequest::conservative(),
)
}
/// Creates a Vulkan logical device for a specific Stage 0 render request.
///
/// # Errors
///
/// Returns [`VulkanLogicalDeviceError`] when runtime capability probing fails,
/// device extension names are invalid, or `vkCreateDevice` fails.
pub fn create_vulkan_logical_device_probe_for_request(
instance: &VulkanInstanceProbe,
surface: &VulkanSurfaceProbe,
drawable_extent: (u32, u32),
render_request: RenderRequest,
) -> Result<VulkanLogicalDeviceProbe, VulkanLogicalDeviceError> {
let selected = select_live_device_candidate_for_request(
instance,
surface,
drawable_extent,
render_request,
)
.map_err(VulkanLogicalDeviceError::Runtime)?;
let capability = &selected.runtime.capability;
let queue_priorities = [1.0_f32];
let queue_families = unique_queue_families(
capability.graphics_queue_family,
capability.present_queue_family,
);
let queue_infos = queue_families
.iter()
.map(|queue_family| {
vk::DeviceQueueCreateInfo::default()
.queue_family_index(*queue_family)
.queue_priorities(&queue_priorities)
})
.collect::<Vec<_>>();
let extension_names = device_extension_cstrings(&capability.enabled_extensions)
.map_err(|extension| VulkanLogicalDeviceError::InvalidExtensionName { extension })?;
let extension_ptrs = extension_names
.iter()
.map(|extension| extension.as_ptr())
.collect::<Vec<_>>();
let create_info = vk::DeviceCreateInfo::default()
.queue_create_infos(&queue_infos)
.enabled_extension_names(&extension_ptrs);
// SAFETY: `selected.physical_device` belongs to `instance`; create data lives for the call.
let device = unsafe {
instance
.instance
.create_device(selected.physical_device, &create_info, None)
}
.map_err(|error| VulkanLogicalDeviceError::CreateFailed {
device: capability.device_name.clone(),
result: error,
})?;
// SAFETY: Queue family indices came from validated live queue families requested above.
let _graphics_queue = unsafe { device.get_device_queue(capability.graphics_queue_family, 0) };
// SAFETY: Queue family indices came from validated live queue families requested above.
let _present_queue = unsafe { device.get_device_queue(capability.present_queue_family, 0) };
Ok(VulkanLogicalDeviceProbe {
device,
physical_device: selected.physical_device,
report: VulkanLogicalDeviceReport {
schema: 1,
device_name: capability.device_name.clone(),
graphics_queue_family: capability.graphics_queue_family,
present_queue_family: capability.present_queue_family,
enabled_extensions: capability.enabled_extensions.clone(),
},
runtime: selected.runtime,
})
}
fn device_extension_cstrings(values: &[String]) -> Result<Vec<CString>, String> {
values
.iter()
.map(|extension| CString::new(extension.as_str()).map_err(|_| extension.clone()))
.collect()
}
|
