Adds a guide on implementing a WSI backend and extra documentation in
a few functions in swapchain_base.
Signed-off-by: Iason Paraskevopoulos <iason.paraskevopoulos@arm.com>
Change-Id: Ibdc702a05605989940966aae168331268c1ce2ba
The layer needs functionality that is not part of Vulkan 1.0 and is
provided by either Vulkan 1.1 or separate Vulkan extensions.
The layer used to solve this issue by bumping the API version passed
by the application in VkCreateInfo to 1.1 if this was set to 1.0.
This workaround does not seem to be working anymore with recent
versions of the loader. Fortunately, the loader now allows layers
to change the extension lists passed by the application.
This patch changes the layer to use this approach and removes the
API bump logic.
Documentation is updated accordingly.
Change-Id: I61c426311612c7f288a0f7d969782d6c5365acf5
Signed-off-by: Matteo Franchin <matteo.franchin@arm.com>
- Clarify requirement of Vulkan 1.1 support in Vulkan Loader and ICDs
- Add a list of Vulkan extensions required for Wayland
- Document option to provide a custom implementation of the wsialloc.h
interface and to disable support for VK_EXT_headless_surface
- Fix link to Vulkan Loader documentation
Change-Id: I791577a49570855fde86b2ffb1ac8e966f2073d9
Very basic Wayland support is implemented by importing
memory with VK_EXT_image_drm_format_modifiers.
The current implementation requires an external system
memory allocator. An API for this allocator is defined
in util/wsialloc/wsialloc.h and an implementation using
the ION memory allocator is included.
Outstanding issues:
* This is an initial prototype for Wayland support and
has many outstanding TODOs which need addressing to
properly use the Wayland protocol.
* Using ICD Exported memory instead of a system allocator
is not implemented.
Wayland support is still experimental and outstanding issues
will be fixed in future commits.
Change-Id: I1b0d5991e15ff1cf25ebbab3392a631b021e8c17
Signed-off-by: Rosen Zhelev <rosen.zhelev@arm.com>
Signed-off-by: Iason Paraskevopoulos <iason.paraskevopoulos@arm.com>
A couple of details in the installation instructions needed updating.
Also fixed a warning message due to a missing return statement (the
return value is currently not used in calls to the function).
Signed-off-by: Matteo Franchin <matteo.franchin@arm.com>
Change-Id: I715b954579253e664ebe01f757587e0602ad82e7
This commit adds the initial sources for the vulkan-wsi-layer project:
a Vulkan layer which implements some of the Vulkan window system
integration extensions such as VK_KHR_swapchain.
The layer is designed to be GPU vendor agnostic when used as part of the
Vulkan ICD/loader architecture.
The project currently implements support for VK_EXT_headless_surface and
its dependencies. We hope to extend support for further platforms such
as Wayland and direct-to-display rendering in the future.
This initial commit collects contributions from different individuals
employed by Arm.
More information on the project (building instructions, how to
contribute, etc.) can be found on the README.md file at the top of the
project tree.
Signed-off-by: Matteo Franchin <matteo.franchin@arm.com>
