* Changes the image state of ACQUIRED once the image has been presented as in shared present modes they are always in an acquired state.
* Removes thread free image semaphore signalling logic for shared present modes as there is only single image available and is always in an acquired state.
* Removes the reliance on the presentation thread for the shared present modes as it shouldn't be necessary for them as the headless mode does not share the buffer resource with any consumers.
* Adds the ability for swapchain_image class to not signal present fence for presentation request. On shared presentation modes we do not need to use the present fence and it cannot be used as the swapchain only has a single image.
* Adds support for present timing extension for shared present modes.
* When shared preset mode is used, the timings returned are always
* undefined as image is always in a state of being presented.
Change-Id: I6a5a7c744fe0fc115001de55a305d253695faf9f Signed-off-by: Normunds Rieksts normunds.rieksts@arm.com
Decouples the swapchain images and their memory binder/allocator logic into separate classes. This allows us to reduce code duplication across different backends that use the same type of allocation logic and also allows us to make use of RAII to release the resources for swapchain images.
The swapchain_base and other swapchain classes have been refactored to handle the new swapchain images.
The patch makes the following adjustments:
* Introduces a new swapchain_image class that holds all swapchain image resources
* Introduces a swapchain image factory class that constructs swapchain images
* Introduces a Vulkan image handle class that is responsible for constructing VkImage handles
* Introduces a new interface that describes how swapchain backing memory is being allocated
* As part of this backing memory interface, introduces device and external (wsialloc) backing memory classes
* Introduces a new interface that holds swapchain image data like wl_buffers
* Refactors lots of swapchain image parts out of the base swapchain class and moves it into the respective backends to simplify the swapchain classes.
