Encountered in 不如帰大乱 when `HOS-3` is awoken at the same time as `HOS-0` called `SvcSetThreadCoreMask` resulting in a deadlock where `HOS-0` owns `HOS-3`'s `coreMigrationMutex` while `HOS-3` owns the core mutex with the both of them attempting to lock the other mutex
We've moved from using an AAR for Mbed TLS to a submodule as the AAR was packaged manually and used from a local repository which ended up being very hacky and resulted in Linter errors, it could also not be updated with ease as it would need to be repackaged. All of these issues have been solved by moving to a git submodule tied to the official Mbed TLS GitHub repository.
Sticky transforms have been stubbed, as they are on HOS/Android. Certain titles like Xenoblade Chronicles end up setting the sticky transform even if it doesn't do anything, as a result of this we cannot throw an exception for it and stub it without an exception (Aside from the cases where the value isn't recognized).
The following GraphicBufferProducer transactions were implemented:
* `SetBufferCount`
* `DetachBuffer`
* `DetachNextBuffer`
* `AttachBuffer`
It should be noted that `preallocatedBufferCount` (previously `hasBufferCount`) and `activeSlotCount` were adapted accordingly with how they were effectively the same value as all active buffers were preallocated prior but now there can be a non-preallocated active slot.
Additionally, a bug has been fixed where `SetPreallocatedBuffer` has the graphic buffer as an optional argument whereas it was treated as a mandatory argument prior and could lead to a SEGFAULT if an application were to not pass in a buffer.
VI/IHOSBinder suffered from major inaccuracies in their function due to being quickly thrown together initially with little concern for accuracy, this has now been fixed with them being substantially more accurate now.
`ENUM_STRING` now has a unified implementation in <common/macros.h> with a documented format and can be used throughout the codebase.
A major performance regression was added in the Host1X Syncpoint revamp as it did a syscall if there were any waiters during `Increment` even if they would just be woken up and go back to sleep as the threshold wasn't hit. It has now been optimized to only do a wake if any waiting thread needs to be awoken.
There was also a bug concerning increment where it would perform actions corresponding to the previous increment rather than the current one which has also been fixed.
We used instantaneous values for FPS previously which led to a lot of variation in it and the inability to determine a proper FPS value due to constant fluctuations. All FPS values are now averaged to allow reading out a stable value and a deviation statistic has been added for the frame-time to judge judder and frame-pacing which allows for a significantly better measure of overall performance. The formatting for all the floating-point numbers is now fixed-point to prevent shifting of position due to decimal digits becoming 0.
Support for the following parameters was added to `QueueBuffer`:
* Earliest Present Timestamp
* Swap Interval
* Crop
* Scaling Mode
* Transform
* Frame ID (Not returned to guest yet)
We utilize ANativeWindow APIs directly to achieve all of this in an efficient manner since HWC will be used directly for it, we do plan to introduce Vulkan equivalents for all of these operations later down the line for a port to non-Android platforms.
We had issues when combining host and guest presentation since certain configurations in guest presentation such as double buffering were very unoptimal for the host and would significantly affect the FPS. As a result of this, we've now made host presentation have its own presentation textures which are copied into from the guest at presentation time, allowing us to change parameters of the host presentation independently of the guest.
We've implemented the infrastructure for this which includes being able to create images from host GPU memory using VMA, an optimized linear texture sync and a method to do on-GPU texture-to-texture copies.
We've also moved to driving the V-Sync event using AChoreographer on its on thread in this PR, which more accurately encapsulates HOS behavior and allows games such as ARMS to boot as they depend on the V-Sync event being signalled even when the game isn't presenting.
This commit reworks the `Texture` class to include a Vulkan Image backing that can be optionally owning or non-owning and swapped in with consideration for Vulkan image layout, it also adds CPU-sided synchronization for the texture objects with FenceCycle. It also makes the appropriate changes to `PresentationEngine` and `GraphicBufferProducer` to work with the new `Texture` class while setting the groundwork for supporting swapchain recreation. It also fixes a log in `IpcResponse` and improves the display mode selection algorithm by further weighing refresh rate.
Implements a wrapper over fences to track a single cycle of activation, implement a Vulkan memory manager that wraps the Vulkan-Memory-Allocator library and a command scheduler for scheduling Vulkan command buffers
This commit makes GraphicBufferProducer significantly more accurate by matching the behavior of AOSP alongside mirroring the tweaks made by Nintendo.
It eliminates a lot of the magic structures and enumerations used prior and replaces them with the correct values from AOSP or HOS.
There was a lot of functional inaccuracy as well which was fixed, we emulate the exact subset of HOS behavior that we need to. A lot of the intermediate layers such as GraphicBufferConsumer or Gralloc/Sync are not emulated as they're pointless abstractions here.
This commit adds in VkSurface/VkSwapchain initialization and recreation. It also adapts GraphicsBuffferProducer and Texture to fit in with those changes but it doesn't yet implement presenting those buffers nor uploading guest buffers onto the host.
Vulkan Device initialization is handled now, it supports required extensions but support for optional extensions/features/properties will come in later when we require those. In addition, we now correctly report the version of Skyline to Vulkan which can be accessed from debugging tools.
There's also a minor change regarding the search pattern for `SkylineLibraries` which now only searches in headers of libraries and it also explicitly excludes the redundant `vulkan.hpp` from the `Vulkan-Headers` repository.
The GPU class has been extended in this for Vulkan initialization, this is done to the point of initializing the instance alongside loading in `VK_LAYER_KHRONOS_validation` which is also now packed into all Debug APKs for Skyline. In addition, `VK_EXT_debug_report` is also initialized and it's output is piped directly into the Logger.
A minor change regarding the type of the `Fps` and `Frametime` globals was changed to `skyline::i32`s which is a more suitable type due to those having a smaller chance of overflowing while being signed as Java doesn't have unsigned integral types.
As both of these are in the same memory segment they have no individual
alignment requirements, this created a bug in
にゃんらぶ～私の恋の見つけ方～ where the data segment would be larger
than the game expected and invalid command line arguments would be read.
armed.
It was discovered during testing of 'Hatsune Miku Project DIVA: Mega Mix'
that if a thread was starting while preemption was being enabled a NULL
pointer dereference could occur in the timer_settime call as
timer_create may not have been called yet.
This is used by games before calling into nvdec in order to clock up the
HW module, it can also be used to request a RAM frequency. Since we
obviously don't emulate the hardware down to this level a basic stub
that provides the correct reponses is enough.
Fixes a crash on first level of Super Mario Odyssey.
We used a custom version of Vulkan-Hpp which split the files a lot prior to avoid any developers needing to manually set IDE settings for IntelliJ to work but this wasn't practical due to how it required modifications to Vulkan-Hpp's generator which would make maintenance extremely difficult. It was determined that we should just add the requirement for changing the IDE settings and use Vulkan-Hpp directly.
