Apparently we need those to make sure that the initial layout
transition itself is valid. We don't need to add shader access
though, since we cannot access attachments inside shaders.
Fixes validation errors and some unnecessary cruft. We don't need
visibility operations in the external-to-renderpass dependency
because that part is handled by regular barriers, an execution
dependency is enough (but still required to handle write-after-read.
If a game clears the depth and stencil aspects of a depth-stencil
buffer separately, we must not override the load op and clear value
of the previously set aspect. Fixes a rendering issue in Hitman
Absolution.
Some operations can operate on only one of the two aspects
of a depth-stencil image. This fixes two possible issues:
- Image memory barriers must be applied to all image aspects
- VK_IMAGE_LAYOUT_UNDEFINED is no longer used as a source layout
if the operation requiring the transition only uses one aspect
Preserves the per-instance and per-adapter extension sets across
multiple Vulkan instances. Works around initialization order issues
with Unity-based VR apps.
Makes it easier to identify the command stream thread and the
queue processing thread easier when using a wine build that
supports SetThreadDescription.
We don't need to force layout transitions and emit double pipeline
barriers in case the GENERAL layout is being used for both images.
This is somewhat common for images used by compute shaders, and
this optimization ensures that only required barriers are emitted.
Instead of inserting a barrier after every single buffer copy, update
or clear operation, we batch them up and execute the barrier when the
first dirty buffer is used by a command. This significantly reduces
the number of pipeline barriers in some games, e.g. Final Fantasy XV.
Spilling the render pass should make shader storage buffer/image writes
visible due to how external subpass dependencies are defined. For UAV
rendering, we need to do this when changing the UAVs, even if the render
targets themselves do not change.
This reverts commit 83ae39f727d7aeb43cef277082bcb42093530779.
Does not show any considerable advantage over the 16 MiB chunk size
and reduces the effectiveness of the host-visible device-local memory
type on AMD cards.
Works around an issue with some games not setting the D3D11 depth
bias state correctly, which can result in an excessive number of
pipelines being compiled.
