Struct Swapchain

struct Swapchain {
    raw: SwapchainKHR,
    raw_flags: SwapchainCreateFlagsKHR,
    functor: Device,
    device: Arc<DeviceShared>,
    images: Vec<Image>,
    config: SurfaceConfiguration,
    view_formats: Vec<TextureFormat>,
    surface_semaphores: Vec<Arc<Mutex<SwapchainImageSemaphores>>>,
    next_semaphore_index: usize,
    next_present_time: Option<PresentTimeGOOGLE>,
}

Available on vulkan only.

Fields

raw: SwapchainKHR

raw_flags: SwapchainCreateFlagsKHR

functor: Device

device: Arc<DeviceShared>

images: Vec<Image>

config: SurfaceConfiguration

view_formats: Vec<TextureFormat>

surface_semaphores: Vec<Arc<Mutex<SwapchainImageSemaphores>>>

One wait semaphore per swapchain image. This will be associated with the surface texture, and later collected during submission.

We need this to be Arc<Mutex<>> because we need to be able to pass this data into the surface texture, so submit/present can use it.

next_semaphore_index: usize

The index of the next semaphore to use. Ideally we would use the same index as the image index, but we need to specify the semaphore as an argument to the acquire_next_image function which is what tells us which image to use.

next_present_time: Option<PresentTimeGOOGLE>

The present timing information which will be set in the next call to present().

Safety

This must only be set if wgt::Features::VULKAN_GOOGLE_DISPLAY_TIMING is enabled, and so the VK_GOOGLE_display_timing extension is present.

Implementations

impl Swapchain

unsafe fn release_resources(self, device: &Device) -> Self

Safety

• The device must have been made idle before calling this function.

impl Swapchain

fn advance_surface_semaphores(&mut self)

fn get_surface_semaphores(&self) -> Arc<Mutex<SwapchainImageSemaphores>>