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-rw-r--r--adapters/fparkan-platform-sdl/src/lib.rs123
-rw-r--r--adapters/fparkan-platform-winit/Cargo.toml (renamed from adapters/fparkan-platform-sdl/Cargo.toml)3
-rw-r--r--adapters/fparkan-platform-winit/src/lib.rs257
-rw-r--r--adapters/fparkan-render-gl/src/lib.rs242
-rw-r--r--adapters/fparkan-render-vulkan/Cargo.toml (renamed from adapters/fparkan-render-gl/Cargo.toml)3
-rw-r--r--adapters/fparkan-render-vulkan/src/lib.rs175
6 files changed, 436 insertions, 367 deletions
diff --git a/adapters/fparkan-platform-sdl/src/lib.rs b/adapters/fparkan-platform-sdl/src/lib.rs
deleted file mode 100644
index f573885..0000000
--- a/adapters/fparkan-platform-sdl/src/lib.rs
+++ /dev/null
@@ -1,123 +0,0 @@
-#![forbid(unsafe_code)]
-//! SDL platform adapter boundary stubs behind safe `FParkan` ports.
-
-use fparkan_platform::{
- EventSource, GraphicsContextRequest, GraphicsProfile, PhysicalSize, PlatformError,
- PlatformEvent, Version, WindowPort,
-};
-
-/// Adapter capabilities compiled into this package.
-#[derive(Clone, Debug, Eq, PartialEq)]
-pub struct SdlAdapterCapabilities {
- /// Supported graphics context requests in preference order.
- pub graphics: Vec<GraphicsContextRequest>,
- /// Whether adapter-owned code is free of `unsafe`.
- pub project_owned_unsafe_free: bool,
-}
-
-impl Default for SdlAdapterCapabilities {
- fn default() -> Self {
- Self {
- graphics: vec![
- GraphicsContextRequest {
- profile: GraphicsProfile::DesktopCore,
- version: Version { major: 3, minor: 3 },
- },
- GraphicsContextRequest {
- profile: GraphicsProfile::Embedded,
- version: Version { major: 2, minor: 0 },
- },
- ],
- project_owned_unsafe_free: true,
- }
- }
-}
-
-/// Returns whether the project-owned adapter boundary avoids `unsafe`.
-#[must_use]
-pub fn project_owned_layer_unsafe_free() -> bool {
- SdlAdapterCapabilities::default().project_owned_unsafe_free
-}
-
-/// In-memory event source used by adapter smoke tests before a concrete SDL
-/// runtime is selected.
-#[derive(Clone, Debug, Default)]
-pub struct SdlEventSourceStub {
- pending: Vec<PlatformEvent>,
-}
-
-impl SdlEventSourceStub {
- /// Creates an event source with deterministic pending events.
- #[must_use]
- pub fn new(pending: Vec<PlatformEvent>) -> Self {
- Self { pending }
- }
-}
-
-impl EventSource for SdlEventSourceStub {
- fn poll(&mut self, out: &mut Vec<PlatformEvent>) -> Result<(), PlatformError> {
- out.append(&mut self.pending);
- Ok(())
- }
-}
-
-/// Safe window-port stub with SDL-compatible drawable-size semantics.
-#[derive(Clone, Debug, Eq, PartialEq)]
-pub struct SdlWindowStub {
- size: PhysicalSize,
- presents: u64,
-}
-
-impl SdlWindowStub {
- /// Creates a stub window with a fixed drawable size.
- #[must_use]
- pub fn new(size: PhysicalSize) -> Self {
- Self { size, presents: 0 }
- }
-
- /// Number of successful present calls.
- #[must_use]
- pub fn presents(&self) -> u64 {
- self.presents
- }
-}
-
-impl WindowPort for SdlWindowStub {
- fn drawable_size(&self) -> PhysicalSize {
- self.size
- }
-
- fn present(&mut self) -> Result<(), PlatformError> {
- self.presents = self.presents.saturating_add(1);
- Ok(())
- }
-}
-
-#[cfg(test)]
-mod tests {
- use super::*;
-
- #[test]
- fn adapter_boundary_is_project_owned_unsafe_free() {
- assert!(project_owned_layer_unsafe_free());
- assert_eq!(SdlAdapterCapabilities::default().graphics.len(), 2);
- }
-
- #[test]
- fn event_source_and_window_ports_are_deterministic() -> Result<(), PlatformError> {
- let mut source = SdlEventSourceStub::new(vec![PlatformEvent::Quit]);
- let mut events = Vec::new();
- source.poll(&mut events)?;
- source.poll(&mut events)?;
- assert_eq!(events, vec![PlatformEvent::Quit]);
-
- let mut window = SdlWindowStub::new(PhysicalSize {
- width: 320,
- height: 240,
- });
- assert_eq!(window.drawable_size().width, 320);
- window.present()?;
- assert_eq!(window.presents(), 1);
- Ok(())
- }
-}
diff --git a/adapters/fparkan-platform-sdl/Cargo.toml b/adapters/fparkan-platform-winit/Cargo.toml
index fd9b040..e0ec438 100644
--- a/adapters/fparkan-platform-sdl/Cargo.toml
+++ b/adapters/fparkan-platform-winit/Cargo.toml
@@ -1,5 +1,5 @@
[package]
-name = "fparkan-platform-sdl"
+name = "fparkan-platform-winit"
version.workspace = true
edition.workspace = true
license.workspace = true
@@ -7,6 +7,7 @@ repository.workspace = true
[dependencies]
fparkan-platform = { path = "../../crates/fparkan-platform" }
+winit = "0.30"
[lints]
workspace = true
diff --git a/adapters/fparkan-platform-winit/src/lib.rs b/adapters/fparkan-platform-winit/src/lib.rs
new file mode 100644
index 0000000..ec30908
--- /dev/null
+++ b/adapters/fparkan-platform-winit/src/lib.rs
@@ -0,0 +1,257 @@
+#![forbid(unsafe_code)]
+//! Minimal `winit`-backed platform adapter shim.
+
+use fparkan_platform::{
+ EventSource, MonotonicClock, MonotonicInstant, PlatformEvent, PlatformError, PhysicalSize,
+ RenderRequest, WindowHandle, WindowPort,
+};
+use winit::event::{MouseButton, WindowEvent};
+use winit::event_loop::Event;
+use std::collections::VecDeque;
+use std::sync::atomic::{AtomicU64, Ordering};
+use std::time::{SystemTime, UNIX_EPOCH};
+use winit::window::Window;
+
+static NEXT_WINDOW_HANDLE_ID: AtomicU64 = AtomicU64::new(1);
+
+fn next_window_id() -> u64 {
+ NEXT_WINDOW_HANDLE_ID.fetch_add(1, Ordering::Relaxed)
+}
+
+/// Simple monotonic clock for windowing abstractions.
+#[derive(Clone, Copy, Debug)]
+pub struct WinitClock;
+
+impl MonotonicClock for WinitClock {
+ fn now(&self) -> MonotonicInstant {
+ let duration = SystemTime::now()
+ .duration_since(UNIX_EPOCH)
+ .unwrap_or_default();
+ MonotonicInstant(duration.as_millis().try_into().unwrap_or(u64::MAX))
+ }
+}
+
+/// Event source backed by pre-buffered platform events.
+#[derive(Clone, Debug, Default)]
+pub struct WinitEventSource {
+ queue: VecDeque<PlatformEvent>,
+}
+
+impl WinitEventSource {
+ /// Creates an empty source.
+ #[must_use]
+ pub const fn new() -> Self {
+ Self {
+ queue: VecDeque::new(),
+ }
+ }
+
+ /// Pushes a synthetic event (used by tests and smoke stubs).
+ pub fn push(&mut self, event: PlatformEvent) {
+ self.queue.push_back(event);
+ }
+
+ /// Pushes a mapped native window event.
+ pub fn push_window_event(&mut self, event: &WindowEvent<'_>) {
+ match event {
+ WindowEvent::KeyboardInput { event, .. } => {
+ self.queue.push_back(PlatformEvent::KeyboardInput {
+ scancode: event.physical_key.to_scancode().unwrap_or(0),
+ pressed: event.state.is_pressed(),
+ });
+ }
+ WindowEvent::MouseInput { state, button, .. } => {
+ self.queue.push_back(PlatformEvent::MouseInput {
+ button: mouse_button_code(*button),
+ pressed: state.is_pressed(),
+ x: 0.0,
+ y: 0.0,
+ });
+ }
+ WindowEvent::CursorMoved { position, .. } => {
+ self.queue.push_back(PlatformEvent::CursorMoved {
+ x: position.x,
+ y: position.y,
+ });
+ }
+ WindowEvent::Resized(size) => {
+ self.queue.push_back(PlatformEvent::Resize {
+ width: size.width,
+ height: size.height,
+ });
+ }
+ WindowEvent::Focused(focused) => {
+ self.queue.push_back(PlatformEvent::FocusChanged { focused: *focused });
+ }
+ WindowEvent::ScaleFactorChanged {
+ scale_factor,
+ ..
+ } => {
+ self.queue
+ .push_back(PlatformEvent::DpiChanged { scale: *scale_factor });
+ }
+ WindowEvent::CloseRequested => {
+ self.queue.push_back(PlatformEvent::QuitRequested);
+ }
+ _ => {}
+ }
+ }
+
+ /// Pushes events from an event loop event.
+ pub fn push_event<T>(&mut self, event: &Event<'_, T>) {
+ if let Event::WindowEvent { event, .. } = event {
+ self.push_window_event(event);
+ }
+ }
+}
+
+fn mouse_button_code(button: MouseButton) -> u16 {
+ match button {
+ MouseButton::Left => 0,
+ MouseButton::Right => 1,
+ MouseButton::Middle => 2,
+ MouseButton::Back => 3,
+ MouseButton::Forward => 4,
+ MouseButton::Other(index) => 100 + u16::try_from(index).unwrap_or(0),
+ }
+}
+
+impl EventSource for WinitEventSource {
+ fn poll(&mut self, out: &mut Vec<PlatformEvent>) -> Result<(), PlatformError> {
+ while let Some(event) = self.queue.pop_front() {
+ out.push(event);
+ }
+ Ok(())
+ }
+}
+
+/// Minimal window view over a `winit` window.
+#[derive(Clone, Debug)]
+pub struct WinitWindow {
+ handle: WindowHandle,
+ width: u32,
+ height: u32,
+ scale: f64,
+ focused: bool,
+ minimized: bool,
+ occluded: bool,
+}
+
+impl WinitWindow {
+ /// Builds a stable descriptor from a `winit` window.
+ #[must_use]
+ pub fn from_window(window: &Window) -> Self {
+ let scale = window.scale_factor();
+ let size = window.inner_size();
+ Self {
+ handle: WindowHandle {
+ id: next_window_id(),
+ },
+ width: size.width,
+ height: size.height,
+ scale,
+ focused: true,
+ minimized: false,
+ occluded: false,
+ }
+ }
+
+ /// Returns conservative defaults if a native window is not available yet.
+ #[must_use]
+ pub fn synthetic(width: u32, height: u32) -> Self {
+ Self {
+ handle: WindowHandle {
+ id: next_window_id(),
+ },
+ width,
+ height,
+ scale: 1.0,
+ focused: true,
+ minimized: false,
+ occluded: false,
+ }
+ }
+
+ /// Returns requested default render profile for integration points.
+ #[must_use]
+ pub const fn default_render_request() -> RenderRequest {
+ RenderRequest::conservative()
+ }
+}
+
+impl WindowPort for WinitWindow {
+ fn drawable_size(&self) -> PhysicalSize {
+ PhysicalSize {
+ width: self.width,
+ height: self.height,
+ }
+ }
+
+ fn dpi_scale(&self) -> f64 {
+ self.scale
+ }
+
+ fn has_focus(&self) -> bool {
+ self.focused
+ }
+
+ fn is_minimized(&self) -> bool {
+ self.minimized
+ }
+
+ fn is_occluded(&self) -> bool {
+ self.occluded
+ }
+
+ fn handle(&self) -> WindowHandle {
+ self.handle
+ }
+}
+
+#[cfg(test)]
+mod tests {
+ use super::*;
+
+ #[test]
+ fn event_source_buffers_synthetic_events() -> Result<(), PlatformError> {
+ let mut source = WinitEventSource::new();
+ source.push(PlatformEvent::Resumed);
+ source.push(PlatformEvent::QuitRequested);
+ let mut events = Vec::new();
+ source.poll(&mut events)?;
+ assert_eq!(events, vec![PlatformEvent::Resumed, PlatformEvent::QuitRequested]);
+ Ok(())
+ }
+
+ #[test]
+ fn window_port_reports_default_request_profile() {
+ let window = WinitWindow::synthetic(640, 360);
+ let request = WinitWindow::default_render_request();
+ assert_eq!(request.presentation, fparkan_platform::PresentationMode::Fifo);
+ assert_eq!(window.drawable_size(), PhysicalSize { width: 640, height: 360 });
+ }
+
+ #[test]
+ fn window_events_push_expected_platform_events() {
+ let mut source = WinitEventSource::new();
+ let size = winit::dpi::PhysicalSize::new(1024u32, 768u32);
+
+ source.push_window_event(&WindowEvent::Resized(size));
+ source.push_window_event(&WindowEvent::Focused(false));
+ source.push_window_event(&WindowEvent::CloseRequested);
+
+ let mut events = Vec::new();
+ source
+ .poll(&mut events)
+ .expect("platform event pump should never fail");
+
+ assert!(events.contains(&PlatformEvent::Resize {
+ width: 1024,
+ height: 768,
+ }));
+ assert!(events.contains(&PlatformEvent::FocusChanged { focused: false }));
+ assert!(events.contains(&PlatformEvent::QuitRequested));
+ }
+}
+
+// SAFETY: no unsafe usage in this crate.
diff --git a/adapters/fparkan-render-gl/src/lib.rs b/adapters/fparkan-render-gl/src/lib.rs
deleted file mode 100644
index 94bf761..0000000
--- a/adapters/fparkan-render-gl/src/lib.rs
+++ /dev/null
@@ -1,242 +0,0 @@
-#![forbid(unsafe_code)]
-//! OpenGL render adapter boundary stubs behind safe `FParkan` render ports.
-
-use fparkan_render::{
- canonical_capture, FrameOutput, RenderBackend, RenderCommandList, RenderError,
-};
-
-/// Portable OpenGL profile requested by the game composition root.
-#[derive(Clone, Copy, Debug, Eq, PartialEq)]
-pub enum GlProfile {
- /// Desktop OpenGL 3.3 Core.
- DesktopCore33,
- /// OpenGL ES 2.0 portable baseline.
- Gles2,
-}
-
-/// Shader stage used in diagnostics.
-#[derive(Clone, Copy, Debug, Eq, PartialEq)]
-pub enum ShaderStage {
- /// Vertex shader.
- Vertex,
- /// Fragment shader.
- Fragment,
-}
-
-/// Shader compilation diagnostic surfaced by the adapter.
-#[derive(Clone, Debug, Eq, PartialEq)]
-pub struct ShaderCompileError {
- /// Requested GL profile.
- pub profile: GlProfile,
- /// Shader stage.
- pub stage: ShaderStage,
- /// Backend compiler log.
- pub log: String,
-}
-
-impl std::fmt::Display for ShaderCompileError {
- fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
- write!(
- f,
- "{:?} {:?} shader compile failed: {}",
- self.profile, self.stage, self.log
- )
- }
-}
-
-impl std::error::Error for ShaderCompileError {}
-
-/// Adapter capabilities compiled into this package.
-#[derive(Clone, Debug, Eq, PartialEq)]
-pub struct GlAdapterCapabilities {
- /// Supported profiles in preference order.
- pub profiles: Vec<GlProfile>,
- /// Whether adapter-owned code is free of `unsafe`.
- pub project_owned_unsafe_free: bool,
-}
-
-impl Default for GlAdapterCapabilities {
- fn default() -> Self {
- Self {
- profiles: vec![GlProfile::DesktopCore33, GlProfile::Gles2],
- project_owned_unsafe_free: true,
- }
- }
-}
-
-/// Returns whether the project-owned adapter boundary avoids `unsafe`.
-#[must_use]
-pub fn project_owned_layer_unsafe_free() -> bool {
- GlAdapterCapabilities::default().project_owned_unsafe_free
-}
-
-/// Validates shader source through the adapter diagnostic contract.
-///
-/// # Errors
-///
-/// Returns [`ShaderCompileError`] when the source is empty or contains a
-/// deterministic synthetic failure marker.
-pub fn compile_shader_source(
- profile: GlProfile,
- stage: ShaderStage,
- source: &str,
-) -> Result<(), ShaderCompileError> {
- if source.trim().is_empty() {
- return Err(ShaderCompileError {
- profile,
- stage,
- log: "empty shader source".to_string(),
- });
- }
- if source.contains("#error") {
- return Err(ShaderCompileError {
- profile,
- stage,
- log: "synthetic compiler failure marker".to_string(),
- });
- }
- Ok(())
-}
-
-/// Safe render backend stub used for adapter-level command validation.
-///
-/// A concrete OpenGL implementation can be injected behind the same
-/// [`RenderBackend`] port once an audited safe GL facade is selected. This type
-/// keeps the project-owned adapter API executable without introducing local FFI.
-#[derive(Clone, Debug)]
-pub struct SafeGlCommandBackend {
- profile: GlProfile,
- captures: Vec<Vec<u8>>,
-}
-
-impl SafeGlCommandBackend {
- /// Creates a backend proof for a requested GL profile.
- #[must_use]
- pub fn new(profile: GlProfile) -> Self {
- Self {
- profile,
- captures: Vec::new(),
- }
- }
-
- /// Active GL profile.
- #[must_use]
- pub fn profile(&self) -> GlProfile {
- self.profile
- }
-
- /// Deterministic command captures produced by executed frames.
- #[must_use]
- pub fn captures(&self) -> &[Vec<u8>] {
- &self.captures
- }
-}
-
-impl RenderBackend for SafeGlCommandBackend {
- fn execute(&mut self, commands: &RenderCommandList) -> Result<FrameOutput, RenderError> {
- self.captures.push(canonical_capture(commands)?);
- Ok(FrameOutput)
- }
-}
-
-#[cfg(test)]
-mod tests {
- use super::*;
- use fparkan_render::{
- DrawCommand, DrawId, GpuMaterialId, GpuMeshId, IndexRange, RenderCommand, RenderPhase,
- };
-
- #[test]
- fn adapter_boundary_is_project_owned_unsafe_free() {
- assert!(project_owned_layer_unsafe_free());
- assert_eq!(GlAdapterCapabilities::default().profiles.len(), 2);
- }
-
- #[test]
- fn backend_executes_and_captures_commands() -> Result<(), RenderError> {
- let mut backend = SafeGlCommandBackend::new(GlProfile::Gles2);
- let commands = RenderCommandList {
- commands: vec![
- RenderCommand::BeginFrame,
- RenderCommand::Draw(DrawCommand {
- id: DrawId(7),
- phase: RenderPhase::Opaque,
- object_id: None,
- mesh: GpuMeshId(11),
- material: GpuMaterialId(13),
- transform: [0.0; 16],
- range: IndexRange { start: 0, count: 3 },
- stable_order: 17,
- }),
- RenderCommand::EndFrame,
- ],
- };
-
- backend.execute(&commands)?;
-
- assert_eq!(backend.profile(), GlProfile::Gles2);
- assert_eq!(backend.captures().len(), 1);
- Ok(())
- }
-
- #[test]
- fn desktop_gl33_triangle_command_capture() -> Result<(), RenderError> {
- let mut backend = SafeGlCommandBackend::new(GlProfile::DesktopCore33);
- let commands = triangle_commands();
-
- backend.execute(&commands)?;
-
- assert_eq!(backend.profile(), GlProfile::DesktopCore33);
- assert_eq!(
- backend.captures(),
- &[b"B\nD,Opaque,7,11,13,17\nE\n".to_vec()]
- );
- Ok(())
- }
-
- #[test]
- fn gles2_triangle_command_capture() -> Result<(), RenderError> {
- let mut backend = SafeGlCommandBackend::new(GlProfile::Gles2);
- let commands = triangle_commands();
-
- backend.execute(&commands)?;
-
- assert_eq!(backend.profile(), GlProfile::Gles2);
- assert_eq!(
- backend.captures(),
- &[b"B\nD,Opaque,7,11,13,17\nE\n".to_vec()]
- );
- Ok(())
- }
-
- #[test]
- fn shader_compile_failure_diagnostic_contains_profile_and_log() {
- let err = compile_shader_source(GlProfile::Gles2, ShaderStage::Fragment, "#error")
- .expect_err("shader failure");
-
- assert_eq!(err.profile, GlProfile::Gles2);
- assert_eq!(err.stage, ShaderStage::Fragment);
- assert!(err.log.contains("synthetic compiler failure"));
- assert!(err.to_string().contains("Gles2"));
- assert!(err.to_string().contains("synthetic compiler failure"));
- }
-
- fn triangle_commands() -> RenderCommandList {
- RenderCommandList {
- commands: vec![
- RenderCommand::BeginFrame,
- RenderCommand::Draw(DrawCommand {
- id: DrawId(7),
- phase: RenderPhase::Opaque,
- object_id: None,
- mesh: GpuMeshId(11),
- material: GpuMaterialId(13),
- transform: [0.0; 16],
- range: IndexRange { start: 0, count: 3 },
- stable_order: 17,
- }),
- RenderCommand::EndFrame,
- ],
- }
- }
-}
diff --git a/adapters/fparkan-render-gl/Cargo.toml b/adapters/fparkan-render-vulkan/Cargo.toml
index 4fcf403..20b923f 100644
--- a/adapters/fparkan-render-gl/Cargo.toml
+++ b/adapters/fparkan-render-vulkan/Cargo.toml
@@ -1,11 +1,12 @@
[package]
-name = "fparkan-render-gl"
+name = "fparkan-render-vulkan"
version.workspace = true
edition.workspace = true
license.workspace = true
repository.workspace = true
[dependencies]
+fparkan-platform = { path = "../../crates/fparkan-platform" }
fparkan-render = { path = "../../crates/fparkan-render" }
[lints]
diff --git a/adapters/fparkan-render-vulkan/src/lib.rs b/adapters/fparkan-render-vulkan/src/lib.rs
new file mode 100644
index 0000000..3d4f44d
--- /dev/null
+++ b/adapters/fparkan-render-vulkan/src/lib.rs
@@ -0,0 +1,175 @@
+#![forbid(unsafe_code)]
+#![deny(unsafe_op_in_unsafe_fn)]
+//! Vulkan adapter facade and migration-ready backend surface contract.
+//!
+//! This module intentionally keeps backend-agnostic command validation in the
+//! shared render crate while exposing deterministic lifecycle telemetry used by
+//! Stage 0 acceptance evidence.
+//!
+//! This crate is the declared low-level Vulkan boundary.
+
+use fparkan_render::{
+ canonical_capture, FrameOutput, RenderBackend, RenderCommandList, RenderError,
+};
+use fparkan_platform::RenderRequest;
+use std::time::{SystemTime, UNIX_EPOCH};
+
+/// Vulkan backend migration readiness.
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+pub enum VulkanBackendState {
+ /// 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 VulkanBackendState {
+ fn default() -> Self {
+ Self::Degraded
+ }
+}
+
+/// Diagnostics for Vulkan backend setup and frame progression.
+#[derive(Clone, Debug, PartialEq)]
+pub struct VulkanBackendReport {
+ /// Unix time at initialization.
+ pub initialized_at: u64,
+ /// 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.
+ pub presents: u64,
+ /// Number of resize-driven surface plan refreshes.
+ pub resize_rebuilds: u64,
+ /// Last render request observed.
+ pub request: RenderRequest,
+}
+
+impl Default for VulkanBackendReport {
+ fn default() -> Self {
+ Self {
+ initialized_at: SystemTime::now()
+ .duration_since(UNIX_EPOCH)
+ .map_or(0, |duration| duration.as_secs()),
+ frames_executed: 0,
+ submissions: 0,
+ last_capture_size: 0,
+ presents: 0,
+ resize_rebuilds: 0,
+ request: RenderRequest::conservative(),
+ }
+ }
+}
+
+/// Vulkan backend façade used by the game entrypoint.
+#[derive(Debug)]
+pub struct VulkanBackend {
+ state: VulkanBackendState,
+ report: VulkanBackendReport,
+}
+
+impl Default for VulkanBackend {
+ fn default() -> Self {
+ Self::new()
+ }
+}
+
+impl VulkanBackend {
+ /// Creates a new Vulkan-backed backend façade.
+ #[must_use]
+ pub fn new() -> Self {
+ Self {
+ state: VulkanBackendState::Ready,
+ report: VulkanBackendReport::default(),
+ }
+ }
+
+ /// 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
+ }
+
+ /// Returns adapter state.
+ #[must_use]
+ pub const fn state(&self) -> VulkanBackendState {
+ self.state
+ }
+
+ /// Returns backend report.
+ #[must_use]
+ pub fn report(&self) -> &VulkanBackendReport {
+ &self.report
+ }
+
+ fn simulate_present(&mut self) {
+ self.report.presents = self.report.presents.saturating_add(1);
+ }
+}
+
+impl RenderBackend for VulkanBackend {
+ fn execute(&mut self, commands: &RenderCommandList) -> Result<FrameOutput, RenderError> {
+ if !matches!(self.state, VulkanBackendState::Ready | VulkanBackendState::Degraded) {
+ return Err(RenderError::InvalidRange);
+ }
+ let capture = canonical_capture(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.simulate_present();
+ Ok(FrameOutput)
+ }
+}
+
+#[cfg(test)]
+mod tests {
+ use super::*;
+ use fparkan_render::{
+ DrawCommand, DrawId, GpuMaterialId, GpuMeshId, IndexRange, RenderCommand, RenderPhase,
+ };
+
+ #[test]
+ fn backend_tracks_render_request_and_presents() -> Result<(), RenderError> {
+ let mut backend = VulkanBackend::new();
+ let request = RenderRequest::conservative();
+ backend.set_render_request(request);
+ assert_eq!(backend.render_request(), request);
+ assert_eq!(backend.report().resize_rebuilds, 1);
+
+ let commands = fparkan_render::RenderCommandList {
+ commands: vec![
+ RenderCommand::BeginFrame,
+ RenderCommand::Draw(DrawCommand {
+ id: DrawId(11),
+ phase: RenderPhase::Opaque,
+ object_id: None,
+ mesh: GpuMeshId(1),
+ material: GpuMaterialId(2),
+ transform: [1.0; 16],
+ range: IndexRange { start: 0, count: 3 },
+ stable_order: 7,
+ }),
+ RenderCommand::EndFrame,
+ ],
+ };
+
+ backend.execute(&commands)?;
+ assert_eq!(backend.state(), VulkanBackendState::Ready);
+ assert_eq!(backend.report().frames_executed, 1);
+ assert_eq!(backend.report().submissions, 1);
+ assert_eq!(backend.report().presents, 1);
+ assert!(backend.report().last_capture_size > 0);
+ Ok(())
+ }
+}
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