Struct CotisWgpuRenderer 

pub struct CotisWgpuRenderer { /* private fields */ }

wgpu-backed renderer implementing the shared cotis render traits.

Owns a winit EventLoop and pumps it on each cotis::renders::CotisRenderer::draw_frame call and on Self::window_should_close. GPU resources (surface, geometry batch, text state) are initialized during construction.

Implementations

impl CotisWgpuRenderer

pub fn auto_start() -> Self

Creates a renderer with a default window and background color.

Uses WindowConfig::default and a dark gray background (45, 45, 55) / 255.

Panics

Panics if GPU initialization or window creation fails. For fallible construction, use Self::new or Self::new_with_config.

pub fn new(background: Color) -> Result<Self, WgpuBackendError>

Creates a renderer with the default WindowConfig.

Errors

Returns WgpuBackendError::Init if the event loop cannot be created or the window is closed during bootstrap, WgpuBackendError::NoAdapter if no GPU adapter is found, WgpuBackendError::CreateSurface or WgpuBackendError::RequestDevice if wgpu setup fails.

pub fn new_with_config( config: WindowConfig, background: Color, ) -> Result<Self, WgpuBackendError>

Creates a renderer with custom window settings.

Boots the winit event loop and creates the window on the first Resumed event.

Errors

Same variants as Self::new, plus WgpuBackendError::Init if window creation fails.

pub fn window_should_close(&mut self) -> bool

Returns whether the user requested the window to close.

Pumps pending winit events before checking the close flag, so this method requires &mut self even though it only reads state.

pub fn window(&self) -> &Arc<Window>

Returns a shared handle to the underlying winit window.

Useful for platform integration or querying window properties directly.

pub fn set_background(&mut self, background: Color)

Sets the swapchain clear color for subsequent frames.

Takes a normalized wgpu::Color (0.0..=1.0 per channel), not a cotis cotis_defaults::colors::Color. Use crate::color::cotis_color_to_wgpu to convert.

Trait Implementations

impl CotisFrameContext for CotisWgpuRenderer

fn get_delta_time(&self) -> f32

Returns delta time in seconds since the previous frame.

impl<'b> CotisRenderer<Box<dyn WgpuDrawable + 'b>> for CotisWgpuRenderer

fn draw_frame( &mut self, render_commands: impl Iterator<Item = Box<dyn WgpuDrawable + 'b>>, )

impl<T: WgpuDrawable> CotisRenderer<RenderTList<T, ()>> for CotisWgpuRenderer

fn draw_frame( &mut self, render_commands: impl Iterator<Item = RenderTList<T, ()>>, )

impl<T: WgpuDrawable, L: WgpuDrawable + IsRenderList> CotisRenderer<RenderTList<T, L>> for CotisWgpuRenderer

fn draw_frame( &mut self, render_commands: impl Iterator<Item = RenderTList<T, L>>, )

impl<'b> CotisRendererAsync<Box<dyn WgpuDrawable + 'b>> for CotisWgpuRenderer

async fn draw_frame( &mut self, render_commands: impl Iterator<Item = Box<dyn WgpuDrawable + 'b>>, )

impl<T: WgpuDrawable> CotisRendererAsync<RenderTList<T, ()>> for CotisWgpuRenderer

async fn draw_frame( &mut self, render_commands: impl Iterator<Item = RenderTList<T, ()>>, )

impl<T: WgpuDrawable, L: WgpuDrawable + IsRenderList> CotisRendererAsync<RenderTList<T, L>> for CotisWgpuRenderer

async fn draw_frame( &mut self, render_commands: impl Iterator<Item = RenderTList<T, L>>, )

impl CotisWindowContext for CotisWgpuRenderer

fn window_dimensions(&self) -> Dimensions

Returns the current drawable window dimensions.

impl MouseProvider for CotisWgpuRenderer

fn get_mouse_position(&self) -> Vector2

Returns mouse position in pixel coordinates.

fn mouse_button_down(&self, button: MouseButton) -> bool

Returns whether the button is currently down.

fn get_mouse_wheel_move_v(&self) -> Vector2

Returns mouse wheel delta for the current frame.

impl<Manager> RenderCompatibleWith<Manager> for CotisWgpuRenderer

fn init(&mut self, _layout_manager: &mut Manager)

impl RendererTextMeasuringProvider<TextConfig> for CotisWgpuRenderer

fn provide_measurer(&mut self) -> Box<dyn Fn(&str, &TextConfig) -> Dimensions>

Returns a measuring function used by layout code.

impl SimpleKeyboardProvider for CotisWgpuRenderer

fn get_pressed_keys(&self) -> IndexSet<KeyboardKey>

Returns keys currently pressed.

impl SimpleTextProvider for CotisWgpuRenderer

fn get_pressed_chars(&self) -> Vec<char>

Returns entered characters in backend-provided order.