Window Handling
vk-graph does not directly provide any window implementation. Instead an accessory crate,
vk-graph-window is provided, based on winit.
Tip
vk-graph-windowprovides additional documentation and examples.
Presentation
The core crate and window crate intentionally separate low-level Vulkan presentation from the frame-oriented helper used by most windowed applications.
| Type | Usage |
|---|---|
vk_graph::driver::swapchain::Swapchain | Vulkan swapchain smart pointer, contains “raw” functions |
vk_graph_window::graphchain::Graphchain | High-level frame-presentation helper for window handlers |
Graphchain acquires the next swapchain image, exposes it through FrameContext, submits the
frame graph, and presents it. Applications normally use Window::run and write to
frame.swapchain_image rather than calling low-level acquire/present functions directly.
GraphchainInfo controls presentation policy such as frame_capacity, min_image_count,
present_mode, acquire_timeout, and composite_alpha. The effective runtime values are exposed
through EffectiveGraphchainInfo because surface capabilities may force different values at runtime.
Resize and surface transitions may cause a frame to be skipped internally. If the surface is lost, the window layer tears down the current surface/graphchain and recreates them on a later draw request.
OpenXR
Virtual reality support via OpenXR is provided as an example which also implements a swapchain.