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xrt: Add swapchain_[dec|inc]_image_count functions

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Christoph Haag 2023-02-16 01:03:45 +01:00 committed by Jakob Bornecrantz
parent eace6e310d
commit cd37974c04
1 changed files with 39 additions and 1 deletions
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40
src/xrt/include/xrt/xrt_compositor.h
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@ -411,7 +411,7 @@ struct xrt_swapchain
uint32_t image_count;
/*!
* Must have called release_image before calling this function.
* @ref dec_image_use must have been called as often as @ref inc_image_use.
*/
void (*destroy)(struct xrt_swapchain *xsc);
@ -431,6 +431,18 @@ struct xrt_swapchain
*/
xrt_result_t (*acquire_image)(struct xrt_swapchain *xsc, uint32_t *out_index);
/*!
* @brief Increments the use counter of a swapchain image.
*/
xrt_result_t (*inc_image_use)(struct xrt_swapchain *xsc, uint32_t index);
/*!
* @brief Decrements the use counter of a swapchain image.
*
* @ref wait_image will return once the image use counter is 0.
*/
xrt_result_t (*dec_image_use)(struct xrt_swapchain *xsc, uint32_t index);
/*!
* Wait until image @p index is available for exclusive use, or until @p timeout_ns expires.
*
@ -504,6 +516,32 @@ xrt_swapchain_acquire_image(struct xrt_swapchain *xsc, uint32_t *out_index)
return xsc->acquire_image(xsc, out_index);
}
/*!
* @copydoc xrt_swapchain::inc_image_use
*
* Helper for calling through the function pointer.
*
* @public @memberof xrt_swapchain
*/
static inline xrt_result_t
xrt_swapchain_inc_image_use(struct xrt_swapchain *xsc, uint32_t index)
{
return xsc->inc_image_use(xsc, index);
}
/*!
* @copydoc xrt_swapchain::dec_image_use
*
* Helper for calling through the function pointer.
*
* @public @memberof xrt_swapchain
*/
static inline xrt_result_t
xrt_swapchain_dec_image_use(struct xrt_swapchain *xsc, uint32_t index)
{
return xsc->dec_image_use(xsc, index);
}
/*!
* @copydoc xrt_swapchain::wait_image
*