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|
use ash::vk;
use fparkan_platform::RenderRequest;
use fparkan_render::{
canonical_capture, FrameOutput, RenderBackend, RenderCommandList, RenderError,
};
use crate::{
plan_vulkan_frame_submission, VulkanFrameSubmissionPlan, VulkanSurfaceFormat,
VulkanSwapchainPlan,
};
/// Vulkan backend migration readiness.
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
pub enum VulkanPlanningBackendState {
/// Adapter prepared and able to accept commands.
Ready,
/// Adapter is tracking a recoverable runtime surface/depth pipeline fault.
Degraded,
/// Adapter has encountered a non-recoverable error.
Error,
}
impl Default for VulkanPlanningBackendState {
fn default() -> Self {
Self::Degraded
}
}
/// Diagnostics for Vulkan planning backend setup and frame progression.
#[derive(Clone, Debug, PartialEq)]
pub struct VulkanPlanningBackendReport {
/// Total frames executed.
pub frames_executed: u64,
/// Total command submissions.
pub submissions: u64,
/// Last command-capture byte size.
pub last_capture_size: usize,
/// Number of simulated present calls issued by the planning facade.
pub simulated_presents: u64,
/// Number of resize-driven surface plan refreshes.
pub resize_rebuilds: u64,
/// Last render request observed.
pub request: RenderRequest,
/// Last deterministic frame submission plan.
pub last_frame_submission: Option<VulkanFrameSubmissionPlan>,
}
impl Default for VulkanPlanningBackendReport {
fn default() -> Self {
Self {
frames_executed: 0,
submissions: 0,
last_capture_size: 0,
simulated_presents: 0,
resize_rebuilds: 0,
request: RenderRequest::conservative(),
last_frame_submission: None,
}
}
}
/// Vulkan planning backend facade used by the game entrypoint.
#[derive(Debug)]
pub struct VulkanPlanningBackend {
state: VulkanPlanningBackendState,
report: VulkanPlanningBackendReport,
swapchain_plan: VulkanSwapchainPlan,
}
impl Default for VulkanPlanningBackend {
fn default() -> Self {
Self::new()
}
}
impl VulkanPlanningBackend {
/// Creates a new Vulkan planning backend facade.
#[must_use]
pub fn new() -> Self {
Self {
state: VulkanPlanningBackendState::Ready,
report: VulkanPlanningBackendReport::default(),
swapchain_plan: default_stage0_swapchain_plan(),
}
}
/// Replaces active surface/profile request.
pub fn set_render_request(&mut self, request: RenderRequest) {
self.report.request = request;
self.report.resize_rebuilds = self.report.resize_rebuilds.saturating_add(1);
}
/// Returns active render request policy.
#[must_use]
pub const fn render_request(&self) -> RenderRequest {
self.report.request
}
/// Replaces active swapchain plan used for frame submission planning.
pub fn set_swapchain_plan(&mut self, plan: VulkanSwapchainPlan) {
self.swapchain_plan = plan;
}
/// Returns active swapchain plan.
#[must_use]
pub const fn swapchain_plan(&self) -> &VulkanSwapchainPlan {
&self.swapchain_plan
}
/// Returns adapter state.
#[must_use]
pub const fn state(&self) -> VulkanPlanningBackendState {
self.state
}
/// Returns backend report.
#[must_use]
pub fn report(&self) -> &VulkanPlanningBackendReport {
&self.report
}
fn simulate_present(&mut self) {
self.report.simulated_presents = self.report.simulated_presents.saturating_add(1);
}
}
impl RenderBackend for VulkanPlanningBackend {
fn execute(&mut self, commands: &RenderCommandList) -> Result<FrameOutput, RenderError> {
if !matches!(
self.state,
VulkanPlanningBackendState::Ready | VulkanPlanningBackendState::Degraded
) {
return Err(RenderError::InvalidRange);
}
let capture = canonical_capture(commands)?;
let frame_plan = plan_vulkan_frame_submission(&self.swapchain_plan, commands)?;
self.report.frames_executed = self.report.frames_executed.saturating_add(1);
self.report.submissions = self.report.submissions.saturating_add(1);
self.report.last_capture_size = capture.len();
self.report.last_frame_submission = Some(frame_plan);
self.simulate_present();
Ok(FrameOutput)
}
}
fn default_stage0_swapchain_plan() -> VulkanSwapchainPlan {
VulkanSwapchainPlan {
schema: 1,
extent: (1, 1),
format: VulkanSurfaceFormat {
format: vk::Format::B8G8R8A8_SRGB.as_raw(),
color_space: vk::ColorSpaceKHR::SRGB_NONLINEAR.as_raw(),
},
present_mode: vk::PresentModeKHR::FIFO.as_raw(),
image_count: 2,
}
}
|
