And zero-initialize mapped memory allocations, which seems to
fix some font corruption occationaly seen in Resident Evil 2.
Signed-off-by: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Unblocks some games that request Feature Level 12.0, such as
Anno 1800, Monster Hunter World, The Talos Principle. May
cause issues if games use unsupported features.
Signed-off-by: Philip Rebohle <philip.rebohle@tu-dortmund.de>
We no longer require coherent memory types, so we should
always prefer a HOST_CACHED memory type for the readback
heap as well as corresponding custom heaps.
Signed-off-by: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Works around an app-bug in SotTR, where the command pool is reset before
the command buffer completes.
Signed-off-by: Hans-Kristian Arntzen <post@arntzen-software.no>
D3D12 supports out-of-order signal and wait. So does Vulkan timeline
semaphores. However, in Vulkan we don't have an infinite amount of
virtual queues. We must potentially map multiple D3D12 queues on top of
Vulkan, which might lead to a deadlock when app attempts to
wait-before-signal if the two queues are mapped to the same physical
Vulkan queue.
In order to solve this, we need to hold back submissions until we know
it is safe to do so. To make this work in practice as simply as possible, each
ID3D12CommandQueue has its own submission thread, which will block on an
ID3D12Fence's pending timeline value for a Wait command. The main reason to use a
submission thread is that resolving this directly in
ID3D12CommandQueue::Signal is extremely tricky and potentially
needs recursively locking queues and fences.
Note that we only block on the pending wait value, not the actual wait
value, so there is no real CPU <-> GPU synchronization here. In the
common case, no submission thread will block.
The added benefit is that submits are async now, so main thread CPU
overhead might slightly decrease.
To play nice with DXGI swapchain, the external entry point for acquiring
the Vulkan queue needs to drain the submission thread and lock it to ensure
submissions happen in order.
Fixes hangs in The Division 1, which makes use of this D3D12 feature.
Signed-off-by: Hans-Kristian Arntzen <post@arntzen-software.no>
The current code uses D3D12 abstractions to create pipelines but
issues raw Vulkan API calls to actually implement the functionality,
which means the code makes assumptions about the exact descriptor
set layout and push constant layout, which is generally a bad idea
now that we have multiple code paths for root constants etc.
Signed-off-by: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Prepares for a rewrite of queue submission, the legacy path is never
run in practice and will likely break in subtle ways.
Signed-off-by: Hans-Kristian Arntzen <post@arntzen-software.no>
On NVIDIA we sometimes fail to place images on a heap because the memory
region was dedicated. Only bother trying this if heap flags only allow
buffers.
Fixes a GPU crash in The Division.
Signed-off-by: Hans-Kristian Arntzen <post@arntzen-software.no>
Instead of taking the resource type, take the binding flag.
This allows us to also use this function for UAV counters.
Signed-off-by: Philip Rebohle <philip.rebohle@tu-dortmund.de>
We currently can't implement this in a meaningful way, but we
should return an empty blob in order to not crash applications.
Signed-off-by: Philip Rebohle <philip.rebohle@tu-dortmund.de>
We're going to need this to implement other parts of the
API, so it should be in common code.
Signed-off-by: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Sveinar Søpler
Philip Rebohle
Hans-Kristian Arntzen