Constant buffer updates result in a barrage of std::mutex calls that take a lot of time even under no contention (around 5%). Using a custom spinlock in cases like these allows inlining locking code reducing the cost of locks under no contention to almost 0.
This can be inlined by the compiler much easier which helps perf a fair bit due to the number of times buffers are looked up, also avoids the need for small vector construction that was done in the previous fast-path.
This isn't a guarantee provided by actual HW so we don't need to provide it either, the sync can be skipped once the buffer already been synced at least once within the execution.
Constructing the GPU copy callback in `ConstantBuffers::Load()` ended up taking a fair amount of time despite it almost never being used in practice. By making it optional it can be skipped most of the time and only done when it's actually neccessary by calling `Write()` again if the initial call returned true.
Buffer views creation was a significant pain point, requiring several layers of caching to reduce the number of creations that introduced a lot of complexity. By reworking delegates to be per-buffer rather than per-view and then linearly allocating delegates (without ever freeing) views can be reduced to just {delegatePtr, offset, size}, avoiding the need for any allocations or set operations in GetView. The one difficulty with this is the need to support buffer recreation, which is achived by allowing delegates to be chained - during recreation all source buffers have their delegates modified to point to the newly created buffer's delegate. Upon accessing a view with such a chained delegate the view will be modified to point directly to the end delegate with offset being updated accordingly, skipping the need to traverse the chain for future accesses.
In the upcoming GPU code each state member will hold a reference to its corresponding Maxwell 3D regs, this helper is needed to allow easy transformation from the the main 3D register struct into them.
Example:
```c++
struct Regs {
std::array<View, 10> viewRegs;
u32 enable;
} regs;
struct ViewState {
const View &view;
const u32 &enable;
size_t index;
};
std::array<ViewState, 10> viewStates{MergeInto<ViewState, 10>(regs.viewRegs, regs.enable, IncrementingT{})
```
Useful for cases where allocations are guaranteed to be unused by the time `Reset()` is called and calling `Free()` would be difficult or add extra performance cost due to how the allocation is used.
In some games performing the binary search in `TranslateRange()` ended up taking a fairly large (~8%) proportion of GPFIFO time. By using a segment table for O(1) lookups this is reduced to <2% for non-split mappings at the cost of slightly increased memory usage (2GiB in the absolute worse case but more like 50MiB in real world situations).
In addition to adapting `TranslateRange()` to use the segment table, a new function `LookupBlock()` for cases where only a single mapping would ever be looked up so the small_vector handling and fallback paths can be skipped and the entire lookup be inlined.
Forward this function to OpenSaveDataFileSystem for now. A proper implementation should wrap the underlying filesystem with nn::fs::ReadOnlyFileSystem.
We want to know when the `KProcess` is being killed and flushing log during it is important since it can often result in hangs due to joining not working correctly.
We currently don't wait on a slot to be freed if none are free, this worked prior to async presentation as GBP's slots wouldn't change their state until other commands were called but now slots can be held by the presentation engine. As a result, we now have to wait on the presentation engine to free up slots.
This commit also fixes the behavior of the `async` flag in `DequeueBuffer` as it was treated as a non-blocking flag but isn't supposed to do anything on HOS.
Needed for games such as AC:NH.
The `Auto` option automatically selects a region based on the currently selected system language.
Co-Authored-By: Timotej Leginus <35149140+timleg002@users.noreply.github.com>
As part of this commit, a new preference category for debug settings is being introduced. All future settings only relevant for debugging purposes will be put there. The category is hidden on release builds.
Host synchronization of a guest texture with a different guest format represents a valid use case where the host doesn't support the guest format and conversion to a host-compatible format must be performed. The issue is most evident on Mali GPUs, as they don't support BCn texture formats thus needing manual decoding before submission. It was disabled by mistake in a previous commit, this commit re-enables it.
Unindexed quad draws were broken when multiple draw calls were done on the same vertex buffer, with a non-zero `first` index.
Indexed quad draws also suffered from the same issue, but was never encountered in games.
This commit fixes both cases by accounting for the `first` drawn index when generating conversion index buffers.
TIPC is a much lighter layer ontop of the Horizon IPC system than CMIF and is used by SM in 12.0.0+. This implementation is slightly hacky since it doesn't really keep a seperation between the underlying kernel IPC stuff and userspace like CMIF/TIPC, this should be fixed eventually, probably together with an IPC dispatch rewrite to avoid the mess of frozen maps.
Tested with Hentai Uni, which now crashes needing 'ldr:ro'.
