comp_swapchain Struct Reference
A swapchain that is almost a one to one mapping to a OpenXR swapchain. More...
#include <util/comp_swapchain.h>
Inheritance diagram for comp_swapchain:
Collaboration diagram for comp_swapchain:
Data Fields | |
| struct xrt_swapchain_native | base |
| struct vk_bundle * | vk |
| struct comp_swapchain_shared * | cscs |
| struct vk_image_collection | vkic |
| struct comp_swapchain_image | images [XRT_MAX_SWAPCHAIN_IMAGES] |
| struct u_index_fifo | fifo |
| This fifo is used to always give out the oldest image to acquire image, this should probably be made even smarter. More... | |
| comp_swapchain_destroy_func_t | real_destroy |
| Virtual real destroy function. More... | |
 Data Fields inherited from xrt_swapchain_native | |
| struct xrt_swapchain | base |
| Base. More... | |
| xrt_limited_unique_id_t | limited_unique_id |
| Unique id for the swapchain, only unique for the current process, is not synchronized between service and any apps via the IPC layer. More... | |
| struct xrt_image_native | images [XRT_MAX_SWAPCHAIN_IMAGES] |
| Data Fields inherited from xrt_swapchain | |
| struct xrt_reference | reference |
| Reference helper. More... | |
| uint32_t | image_count |
| Number of images. More... | |
| void(* | destroy )(struct xrt_swapchain *xsc) |
| dec_image_use must have been called as often as inc_image_use. More... | |
| xrt_result_t(* | acquire_image )(struct xrt_swapchain *xsc, uint32_t *out_index) |
| Obtain the index of the next image to use, without blocking on being able to write to it. More... | |
| xrt_result_t(* | inc_image_use )(struct xrt_swapchain *xsc, uint32_t index) |
| Increments the use counter of a swapchain image. More... | |
| xrt_result_t(* | dec_image_use )(struct xrt_swapchain *xsc, uint32_t index) |
| Decrements the use counter of a swapchain image. More... | |
| xrt_result_t(* | wait_image )(struct xrt_swapchain *xsc, uint64_t timeout_ns, uint32_t index) |
Wait until image index is available for exclusive use, or until timeout_ns expires. More... | |
| xrt_result_t(* | barrier_image )(struct xrt_swapchain *xsc, enum xrt_barrier_direction direction, uint32_t index) |
| Do any barrier transitions to and from the application. More... | |
| xrt_result_t(* | release_image )(struct xrt_swapchain *xsc, uint32_t index) |
| See xrReleaseSwapchainImage, state tracker needs to track index. More... | |
Additional Inherited Members | |
| Public Member Functions inherited from xrt_swapchain | |
| static xrt_result_t | xrt_swapchain_acquire_image (struct xrt_swapchain *xsc, uint32_t *out_index) |
| Obtain the index of the next image to use, without blocking on being able to write to it. More... | |
| static xrt_result_t | xrt_swapchain_inc_image_use (struct xrt_swapchain *xsc, uint32_t index) |
| Increments the use counter of a swapchain image. More... | |
| static xrt_result_t | xrt_swapchain_dec_image_use (struct xrt_swapchain *xsc, uint32_t index) |
| Decrements the use counter of a swapchain image. More... | |
| static xrt_result_t | xrt_swapchain_wait_image (struct xrt_swapchain *xsc, uint64_t timeout_ns, uint32_t index) |
Wait until image index is available for exclusive use, or until timeout_ns expires. More... | |
| static xrt_result_t | xrt_swapchain_barrier_image (struct xrt_swapchain *xsc, enum xrt_barrier_direction direction, uint32_t index) |
| Do any barrier transitions to and from the application. More... | |
| static xrt_result_t | xrt_swapchain_release_image (struct xrt_swapchain *xsc, uint32_t index) |
| See xrReleaseSwapchainImage, state tracker needs to track index. More... | |
| Related Functions inherited from xrt_swapchain_native | |
| static void | xrt_swapchain_native_reference (struct xrt_swapchain_native **dst, struct xrt_swapchain_native *src) |
| Update the reference counts on swapchain(s). More... | |
| Related Functions inherited from xrt_swapchain | |
| static void | xrt_swapchain_reference (struct xrt_swapchain **dst, struct xrt_swapchain *src) |
| Update the reference counts on swapchain(s). More... | |
Detailed Description
A swapchain that is almost a one to one mapping to a OpenXR swapchain.
Not used by the window backend that uses the comp_target to render to.
The vk_bundle is owned by the compositor, its the state trackers job to make sure that compositor lives for as long as the swapchain does and that all swapchains are destroyed before the compositor is destroyed.
- See also
- comp_compositor
Field Documentation
◆ fifo
| struct u_index_fifo comp_swapchain::fifo |
This fifo is used to always give out the oldest image to acquire image, this should probably be made even smarter.
◆ real_destroy
| comp_swapchain_destroy_func_t comp_swapchain::real_destroy |
Virtual real destroy function.
The documentation for this struct was generated from the following file:
- compositor/util/comp_swapchain.h
