Notably, fairly generic functions to create/launch/destroy Cuda kernels,
and methods to fetch GPU virtual addresses and handles for DX11 resources.
Note: Requires some corresponding dxvk-nvapi changes for DLSS to
be initialized successfully.
This was only half-implemented (e.g. OpenXR was still calling
GetModuleHandle), broke compilation with Vulkan due to mismatched ABI,
and wouldn't have worked anyways with winelib builds because we still
need access to wine's implementation of the Vulkan win32 winsys
integration. Perhaps this is still useful for dxvk-native but if so it
should be re-added under a DXVK_NATIVE flag.
vkAcquireNextImageKHR is a blocking call, so doing this immediately after
presentation may reduce the amount of time that passes between the application
requesing presentation and presentation actually happening on the Vulkan device.
Idea based on PR #2075.
Instead, end the render pass as necessary and clear outside of it.
May fix validation errors in some very rare scenarios where the game
performs a clear and then uses a read-only depth-stencil view.
We're not using those functions, but these are device functions, not
instance functions. vkGetPhysicalDeviceSurfacePresentModes2EXT appears
to be an instance function.
Found while investigating #1324.
From the spec:
"Host access to all VkQueue objects created
from device must be externally synchronized"
We were not doing that, which could cause hangs and
all sorts of issues when recreating the swap chain
on Nvidia GPUs.
If the surface is lost in a way that can't be recovered by recreating
the surface from the window, the previous change would wind up looping
forever. Just retry 5 times before giving up.
According to the Vulkan spec:
> Several WSI functions return `VK_ERROR_SURFACE_LOST_KHR` if the
> surface becomes no longer available. After such an error, the surface
> (and any child swapchain, if one exists) **should** be destroyed, as
> there is no way to restore them to a not-lost state.
So if we get this error, we need to recreate the surface in addition to
the swapchain.
