Commit graph

5195 commits

Author SHA1 Message Date
Lioncash d0b1f2bd05 General: Resolve fmt specifiers to adhere to 8.0.0 API where applicable
Also removes some deprecated API usages.
2021-06-23 13:48:21 -04:00
bunnei d8d9bb0dfb
Merge pull request #6518 from lioncash/func
maxwell3d: Add missing return in default SizeInBytes() case
2021-06-23 09:43:00 -07:00
Lioncash be6844c1ed maxwell3d: Add missing return in default SizeInBytes() case
We were returning '1' in ComponentCount()'s default case but were
neglecting to do the same with SizeInBytes().
2021-06-23 11:50:40 -04:00
Mai M 17fff10e06
Merge pull request #6465 from FernandoS27/sex-on-the-beach
GPU: Implement a garbage collector for GPU Caches (project Reaper+)
2021-06-23 08:03:01 -04:00
Mai M 20f474b09a
Merge pull request #6508 from ReinUsesLisp/bootmanager-stop-token
bootmanager: Use std::stop_source for stopping emulation
2021-06-23 02:35:42 -04:00
Fernando Sahmkow f9b940a442 Reaper: Set minimum cleaning limit on OGL. 2021-06-22 22:07:17 +02:00
Morph 81b1b71993 common: fs: Remove [[nodiscard]] attribute on Remove* functions
There are a lot of scenarios where we don't particularly care whether or not the removal operation and just simply attempt a removal.

As such, removing the [[nodiscard]] attribute is best for these functions.
2021-06-22 13:36:24 -04:00
ReinUsesLisp 4009ae1da2 bootmanager: Use std::stop_source for stopping emulation
Use its std::stop_token to abort shader cache loading.

Using std::stop_token instead of std::atomic_bool allows the usage of
other utilities like std::stop_callback.
2021-06-22 00:04:57 -03:00
ReinUsesLisp cf116a28a6 vk_master_semaphore: Use jthread for debug thread 2021-06-21 19:56:07 -03:00
lat9nq a01459df3d gl_device: Expand on Mesa driver names
Makes this list a bit more capable at identifying Mesa drivers. Tries to
deal with two of the overloaded vendor strings in a more generic
fashion.
2021-06-20 23:04:07 -04:00
ameerj fb16cbb17e video_core: Add GPU vendor name to window title bar 2021-06-20 23:04:07 -04:00
Fernando Sahmkow 569a1962c0 Reaper: Guarantee correct deletion. 2021-06-20 19:11:41 +02:00
ameerj 851c76233d util_shaders: Specify ASTC decoder memory barrier bits 2021-06-19 11:16:25 -04:00
ameerj ace20ba4a4 astc_decoder.comp: Remove unnecessary LUT SSBOs
We can move them to instead be compile time constants within the shader.
2021-06-19 10:56:13 -04:00
ameerj 31b125ef57 astc: Various robustness enhancements for the gpu decoder
These changes should help in reducing crashes/drivers panics that may
occur due to synchronization issues between the shader completion and
later access of the decoded texture.
2021-06-19 09:00:33 -04:00
ameerj 0b172d12c0 vulkan_debug_callback: Skip logging known false-positive validation errors
Avoids overwhelming the log with validation errors that are not applicable
2021-06-17 22:16:32 -04:00
Fernando Sahmkow 719a6dd5a1 Reaper: Correct size calculation on Vulkan. 2021-06-17 08:48:41 +02:00
Ameer J c5b517aa5f
Merge pull request #6469 from ReinUsesLisp/blit-view-compat
texture_cache/util: Avoid relaxed image views on different bytes per block
2021-06-16 21:08:07 -04:00
Fernando Sahmkow ca6f47c686 Reaper: Change memory restrictions on TC depending on host memory on VK. 2021-06-17 00:29:48 +02:00
Fernando Sahmkow 0dd98842bf Reaper: Address Feedback. 2021-06-16 21:35:03 +02:00
Fernando Sahmkow 954ad2a61e Reaper: Setup settings and final tuning. 2021-06-16 21:35:03 +02:00
Fernando Sahmkow d8ad6aa187 Reaper: Tune it up to be an smart GC. 2021-06-16 21:35:02 +02:00
ReinUsesLisp a11bc4a382 Initial Reaper Setup
WIP
2021-06-16 21:35:02 +02:00
ReinUsesLisp 5b1efe522e vulkan_memory_allocator: Release allocations with no commits 2021-06-16 21:35:01 +02:00
ameerj 5fc8393125 astc_decoder: Fix LDR CEM1 endpoint calculation
Per the spec, L1 is clamped to the value 0xff if it is greater than 0xff. An oversight caused us to take the maximum of L1 and 0xff, rather than the minimum.

Huge thanks to wwylele for finding this.

Co-Authored-By: Weiyi Wang <wwylele@gmail.com>
2021-06-15 20:19:01 -04:00
ameerj b2955479e5 configure_graphics: Add Accelerate ASTC decoding setting 2021-06-15 20:19:00 -04:00
ameerj c4ff7ecf51 textures: Reintroduce CPU ASTC decoder
Users may want to fall back to the CPU ASTC texture decoder due to hangs
and crashes that may be caused by keeping the GPU under compute heavy
loads for extended periods of time. This is especially the case in games
such as Astral Chain which make extensive use of ASTC textures.
2021-06-15 20:19:00 -04:00
ReinUsesLisp 3d89398b84 texture_cache/util: Avoid relaxed image views on different bytes per pixel
Avoids API usage errors on UE4 titles leading to crashes.
2021-06-14 21:03:57 -03:00
lat9nq 932c0184a7 cmake: Fix find_program usage for 3.15
yuzu requires CMake 3.15 yet find_program was using REQUIRED, which is
only available on 3.18 and later. Instead, we check for
"<VAR>-NOTFOUND".

In addition, check for additional requirements before building libusb or
FFmpeg with autotools. Otherwise, CMake configuration will pass yet
compilation will fail.
2021-06-13 01:15:54 -04:00
Fernando Sahmkow 588ab44470 GPUTHread: Remove async reads from Normal Accuracy. 2021-06-11 17:27:17 +02:00
ReinUsesLisp 7b0d8bd1fb rasterizer: Update pages in batches 2021-06-11 17:27:17 +02:00
Markus Wick 6755025310 Fix GCC undefined behavior sanitizer.
* Wrong alignment in u64 LOG_DEBUG -> memcpy.
* Huge shift exponent in stride calculation for linear buffer, unused result -> skipped.
* Large shift in buffer cache if word = 0, skip checking for set bits.

Non of those were critical, so this should not change any behavior.
At least with the assumption, that the last one used masking behavior, which always yield continuous_bits = 0.
2021-06-10 21:07:27 +02:00
bunnei df91c9f5e6
Merge pull request #6410 from lat9nq/avoid-oob
decoders: Avoid out-of-bounds access
2021-06-07 10:51:17 -07:00
lat9nq 287a0f72a5 decoders: Break instead of continue
continue causes a memory leak in A Hat in Time.
2021-06-04 05:12:14 -04:00
lat9nq 1feefabeba decoders: Avoid out-of-bounds access
This is not a real fix, so assert here and continue before crashing.
2021-06-04 05:03:54 -04:00
ameerj 859ba21f6d buffer_cache: Simplify uniform disabling logic 2021-06-01 13:26:58 -04:00
bunnei 0a6f685ad0
Merge pull request #6367 from ReinUsesLisp/vma-host
vulkan_memory_allocator: Allow textures to be allocated in host memory
2021-05-31 23:35:11 -07:00
bunnei 8592f8a2b4 video_core: gpu: WaitFence: Do not block threads during shutdown.
- Fixes a hang on shutdown when NVFlinger thread is waiting on a syncpoint that will never occur.
- Commonly observed when stopping emulation in Super Mario Odyssey.
2021-05-29 01:06:04 -07:00
Markus Wick 5a8cd1b118 Fix two GCC 11 warnings: Unneeded copies.
std::move created an unneeded copy.
iterating without reference also created copies.
2021-05-29 08:57:44 +02:00
bunnei 4b95b0df97 video_core: rasterizer_cache: Use u16 for cached page count.
- Greatly reduces the risk of overflow, at the cost of doubling the size of this array.
2021-05-27 14:47:24 -07:00
ReinUsesLisp 19454e71d8 vulkan_memory_allocator: Allow textures to be allocated in host memory
Allow Vulkan's allocator to use host memory when there's no more device
local memory. This delays OOM, but it will eventually still happen.
2021-05-27 05:50:48 -03:00
Morph 065867e2c2
common: fs: Rework the Common Filesystem interface to make use of std::filesystem (#6270)
* common: fs: fs_types: Create filesystem types

Contains various filesystem types used by the Common::FS library

* common: fs: fs_util: Add std::string to std::u8string conversion utility

* common: fs: path_util: Add utlity functions for paths

Contains various utility functions for getting or manipulating filesystem paths used by the Common::FS library

* common: fs: file: Rewrite the IOFile implementation

* common: fs: Reimplement Common::FS library using std::filesystem

* common: fs: fs_paths: Add fs_paths to replace common_paths

* common: fs: path_util: Add the rest of the path functions

* common: Remove the previous Common::FS implementation

* general: Remove unused fs includes

* string_util: Remove unused function and include

* nvidia_flags: Migrate to the new Common::FS library

* settings: Migrate to the new Common::FS library

* logging: backend: Migrate to the new Common::FS library

* core: Migrate to the new Common::FS library

* perf_stats: Migrate to the new Common::FS library

* reporter: Migrate to the new Common::FS library

* telemetry_session: Migrate to the new Common::FS library

* key_manager: Migrate to the new Common::FS library

* bis_factory: Migrate to the new Common::FS library

* registered_cache: Migrate to the new Common::FS library

* xts_archive: Migrate to the new Common::FS library

* service: acc: Migrate to the new Common::FS library

* applets/profile: Migrate to the new Common::FS library

* applets/web: Migrate to the new Common::FS library

* service: filesystem: Migrate to the new Common::FS library

* loader: Migrate to the new Common::FS library

* gl_shader_disk_cache: Migrate to the new Common::FS library

* nsight_aftermath_tracker: Migrate to the new Common::FS library

* vulkan_library: Migrate to the new Common::FS library

* configure_debug: Migrate to the new Common::FS library

* game_list_worker: Migrate to the new Common::FS library

* config: Migrate to the new Common::FS library

* configure_filesystem: Migrate to the new Common::FS library

* configure_per_game_addons: Migrate to the new Common::FS library

* configure_profile_manager: Migrate to the new Common::FS library

* configure_ui: Migrate to the new Common::FS library

* input_profiles: Migrate to the new Common::FS library

* yuzu_cmd: config: Migrate to the new Common::FS library

* yuzu_cmd: Migrate to the new Common::FS library

* vfs_real: Migrate to the new Common::FS library

* vfs: Migrate to the new Common::FS library

* vfs_libzip: Migrate to the new Common::FS library

* service: bcat: Migrate to the new Common::FS library

* yuzu: main: Migrate to the new Common::FS library

* vfs_real: Delete the contents of an existing file in CreateFile

Current usages of CreateFile expect to delete the contents of an existing file, retain this behavior for now.

* input_profiles: Don't iterate the input profile dir if it does not exist

Silences an error produced in the log if the directory does not exist.

* game_list_worker: Skip parsing file if the returned VfsFile is nullptr

Prevents crashes in GetLoader when the virtual file is nullptr

* common: fs: Validate paths for path length

* service: filesystem: Open the mod load directory as read only
2021-05-25 19:32:56 -04:00
bunnei 5068279f23
Merge pull request #6248 from A-w-x/intelmesa
gl_device: Intel: Disable texture view formats workaround on mesa
2021-05-20 23:47:14 -07:00
bunnei 7d86a6ff02
Merge pull request #6317 from ameerj/fps-fix
perf_stats: Rework FPS counter to be more accurate
2021-05-18 19:56:29 -07:00
bunnei 93bc59b62d
Merge pull request #6322 from ameerj/fast-null-buffer
buffer_cache: Ensure null buffers cannot take the fast uniform bind path
2021-05-17 15:45:36 -07:00
ameerj acf22336ec buffer_cache: Ensure null buffers cannot take the fast uniform bind path
Fixes a crash in New Pokemon Snap
2021-05-16 07:43:40 -04:00
bunnei a1138028a8
Merge pull request #6289 from ameerj/oob-blit
texture_cache: Handle out of bound texture blits
2021-05-15 21:32:37 -07:00
ameerj 5bef54618a perf_stats: Rework FPS counter to be more accurate
The FPS counter was based on metrics in the nvdisp swapbuffers call. This metric would be accurate if the gpu thread/renderer were synchronous with the nvdisp service, but that's no longer the case.

This commit moves the frame counting responsibility onto the concrete renderers after their frame draw calls. Resulting in more meaningful metrics.
The displayed FPS is now made up of the average framerate between the previous and most recent update, in order to avoid distracting FPS counter updates when framerate is oscillating between close values.

The status bar update frequency was also changed from 2 seconds to 500ms.
2021-05-15 20:34:20 -04:00
ameerj 3671fd0a97 texture_cache: Handle out of bound texture blits
Some games interleave a texture blit using regions which are out-of-bounds. This addresses the interleaving to avoid oob reads from the src texture.
2021-05-07 22:14:21 -04:00
bunnei 2a7eff57a8 hle: kernel: Rename Process to KProcess. 2021-05-05 16:40:52 -07:00
A-w-x 6a2084a204 gl_device: Intel: Disable texture view formats workaround on mesa 2021-04-26 18:14:10 +02:00
bunnei 3c5fb53634
Merge pull request #6237 from ameerj/nvdec-end-fix
nvhost_vic: Fix device closure
2021-04-25 23:05:58 -07:00
ameerj ae758a236f vk_texture_cache: Swap R and B channels of color flipped format
Swaps the Red and Blue channels of the A1B5G5R5_UNORM texture format, which was being incorrectly rendered.
2021-04-24 23:59:42 -04:00
ameerj 75e0d16caa nvhost_vic: Fix device closure
Implements the OnClose method of the nvhost_vic device, and removes the remnants of an older implementation.

Also cleans up some of the surrounding code.
2021-04-24 19:22:09 -04:00
Lioncash 17b7f0389a texture_cache/util: Fix src being used instead of dst within DeduceBlitImages
This line can only ever be reached if src is null, so dereferencing it
here is a logic bug that slipped through.

Instead, we dereference dst instead which is guaranteed to be valid.
2021-04-19 13:01:50 -04:00
bunnei 9ad77ba6d3
Merge pull request #6125 from ogniK5377/nvdec-close-dev
nvdrv: Cleanup CDMA Processor on device closure
2021-04-16 23:14:44 -07:00
Chloe Marcec edb1d5d242 Address issues 2021-04-16 13:52:32 +10:00
bunnei de5bf640b7
Merge pull request #6196 from bunnei/asserts-setting
core: settings: Add setting for debug assertions and disable by default.
2021-04-14 17:47:18 -07:00
bunnei a4c6712a4b common: Move settings to common from core.
- Removes a dependency on core and input_common from common.
2021-04-14 16:24:03 -07:00
bunnei 8146c8c5e7
Merge pull request #6191 from lioncash/vdtor
engine_interface: Add missing virtual destructor
2021-04-13 19:59:10 -07:00
bunnei 12a343ed8d
Merge pull request #6190 from lioncash/constfn2
vk_master_semaphore: Add missing const qualifier for IsFree()
2021-04-13 17:52:38 -07:00
bunnei 62b560e8e3
Merge pull request #6188 from lioncash/bits
vk_texture_cache: Make use of bit_cast where applicable
2021-04-13 16:44:49 -07:00
bunnei 154eb3cfbe
Merge pull request #6187 from lioncash/sign-conv
texure_cache/util: Resolve implicit sign conversions with std::reduce
2021-04-13 09:46:32 -07:00
Lioncash 31932904c5 engine_interface: Add missing virtual destructor
Eliminates a potential bug vector related to inheritance. Plus, we
should generally be specifying the destructor as virtual within purely
virtual interfaces to begin with.
2021-04-12 09:53:55 -04:00
Lioncash 9b331a5fb5 vk_master_semaphore: Deduplicate atomic access within IsFree()
We can just reuse the already existing KnownGpuTick() to deduplicate the
access.
2021-04-12 09:41:55 -04:00
Lioncash c5f5d6e7f6 vk_master_semaphore: Add missing const qualifier for IsFree()
This member function doesn't modify class state.
2021-04-12 09:41:23 -04:00
Lioncash 4198c92ed0 vk_texture_cache: Make use of Common::BitCast where applicable
Also clarify the TODO comment a little more on the lacking
implementations for std::bit_cast.
2021-04-12 09:17:36 -04:00
Lioncash fddb278aa3 texure_cache/util: Resolve implicit sign conversions with std::reduce
Amends implicit sign conversions occurring with usages of std::reduce
and also relocates it to its own utility function to reduce verbosity a
little bit.
2021-04-12 05:21:53 -04:00
Lioncash 4209588505 query_cache: Make use of std::erase_if
Same behavior, but much more straightforward to read.
2021-04-12 04:51:18 -04:00
Rodrigo Locatti ddbd1387aa
Merge pull request #6181 from Joshua-Ashton/robustness_features
vulkan_device: Enable EXT_robustness2 features
2021-04-11 20:42:14 -03:00
Joshua Ashton 0ec6cb942d
vk_buffer_cache: Fix offset for NULL vertex buffers
The Vulkan spec states:
If an element of pBuffers is VK_NULL_HANDLE, then the corresponding element of pOffsets must be zero.

https://www.khronos.org/registry/vulkan/specs/1.2-extensions/man/html/vkCmdBindVertexBuffers2EXT.html#VUID-vkCmdBindVertexBuffers2EXT-pBuffers-04112
2021-04-11 10:34:52 +01:00
Joshua Ashton 08337a492d
vulkan_device: Enable EXT_robustness2 features
When this was being made mandatory, these enablement of these features was removed, but this is still needed.

Fixes: 757fd1e917 ("vulkan_device: Require VK_EXT_robustness2")
2021-04-11 09:48:38 +01:00
Joshua Ashton bcf58c8210
renderer_vulkan: Check return value of AcquireNextImage
We can get into a really bad state by ignoring this
leading to device loss and using incorrect resources.
2021-04-11 09:27:50 +01:00
Markus Wick e8bd9aed8b video_core: Use a CV for blocking commands.
There is no need for a busy loop here. Let's just use a condition variable to save some power.
2021-04-07 22:38:52 +02:00
Markus Wick e6fb49fa4b video_core/gpu_thread: Keep the write lock for allocating the fence.
Else the fence might get submited out-of-order into the queue, which makes testing them pointless.
Overhead should be tiny as the mutex is just moved from the queue to the writing code.
2021-04-07 22:38:52 +02:00
Markus Wick 5145133a60 video_core/gpu_thread: Implement a ShutDown method.
This was implicitly done by `is_powered_on = false`, however the explicit method allows us to block until the GPU is actually gone.

This should fix a race condition while removing the other subsystems while the GPU is still active.
2021-04-07 22:38:52 +02:00
Markus Wick 4aec060f6d common/threadsafe_queue: Provide Wait() method.
It shall block until there is something to consume in the queue.

And use it for the GPU emulation instead of the spin loop.
This is only in booting the emulator, however in BOTW this is the case for about 1 second.
2021-04-07 22:38:52 +02:00
lat9nq a60653dcd3 vp9: Avoid memcpy with null pointers
Avoid sending null pointer to memcpy as reported by Undefined Behaviour
Sanitizer. Replaces the std::memcpy calls in SpliceVectors with
std::copy calls. Opting to replace all the memcpy's with copy's.

Co-authored-by: LC <mathew1800@gmail.com>
2021-04-05 00:44:38 -04:00
Rodrigo Locatti 5ee669466f
Merge pull request #5927 from ameerj/astc-compute
video_core: Accelerate ASTC texture decoding using compute shaders
2021-03-30 19:31:52 -03:00
Chloe Marcec bf1c1788ca nvdrv: Cleanup CDMA Processor on device closure
Brings us a step closer to unifying all channels to share a common interface.
2021-03-30 20:37:40 +11:00
Jan Beich 9b50b23a50 vulkan_common: enable OpenGL interop on other Unices 2021-03-30 00:25:25 +00:00
ameerj 2f83d9a61b astc_decoder: Refactor for style and more efficient memory use 2021-03-25 16:53:51 -04:00
Jan Beich 8c016b02e7 gl_device: unblock async shaders on other Unix systems
Mesa is the primary OpenGL provider on all FreeDesktop systems.
For example, iris is used on Intel GPU + FreeBSD by default.
2021-03-24 19:59:20 +00:00
lat9nq 538f097f97 gl_device: Block async shaders on AMD and Intel
Currently, the Windows versions of the Intel OpenGL driver and the AMD
proprietary OpenGL driver do not properly support (or in fact degrade)
when asynchronous shader compilation is enabled. This blocks
specifically those drivers from using this feature. This affects
AMDGPU-PRO on Linux, and AMD's and Intel's OpenGL drivers on Windows.
2021-03-21 01:25:45 -04:00
Rodrigo Locatti 2f30c10584 astc_decoder: Reimplement Layers
Reimplements the approach to decoding layers in the compute shader. Fixes multilayer astc decoding when using Vulkan.
2021-03-13 12:16:03 -05:00
ameerj c7553abe89 astc_decoder: Fix out of bounds memory access
resolves a crash with some anamolous textures found in Astral Chain.
2021-03-13 12:16:03 -05:00
ameerj 20eb368e14 renderer_vulkan: Accelerate ASTC decoding
Co-Authored-By: Rodrigo Locatti <reinuseslisp@airmail.cc>
2021-03-13 12:16:03 -05:00
ameerj f6566338eb host_shaders: Modify shader cmake integration to allow for larger shaders
using a raw string to encapsulate the entire shader code limits us to shaders of size less than 2KB. This change overcomes this limitation.
2021-03-13 12:16:03 -05:00
ameerj 2985e5e94c renderer_opengl: Accelerate ASTC texture decoding with a compute shader
ASTC texture decoding is currently handled by a CPU decoder for GPU's without native ASTC decoding support (most desktop GPUs). This is the cause for noticeable performance degradation in titles which use the format extensively.

This commit adds support to accelerate ASTC decoding using a compute shader on OpenGL for GPUs without native support.
2021-03-13 12:16:03 -05:00
bunnei 4735d18bb9
Merge pull request #6028 from bunnei/raster-cache
video_core: rasterizer_accelerated: Use a flat array instead of interval_map for cached pages.
2021-03-12 21:57:27 -08:00
bunnei a9d24b0df3 video_core: rasterizer_accelerated: Fix un/signed mismatch. 2021-03-12 21:52:49 -08:00
Rodrigo Locatti daf5c5060b
Merge pull request #5891 from ameerj/bgra-ogl
renderer_opengl: Use compute shaders to swizzle BGR textures on copy
2021-03-09 02:47:51 -03:00
bunnei d1a7b2eca7
Merge pull request #6021 from ReinUsesLisp/skip-cache-heuristic
buffer_cache: Heuristically decide to skip cache on uniform buffers
2021-03-08 17:48:55 -08:00
ameerj 5213f70230 texture_cache: Blacklist BGRA8 copies and views on OpenGL
In order to force the BGRA8 conversion on Nvidia using OpenGL, we need to forbid texture copies and views with other formats.

This commit also adds a boolean relating to this, as this needs to be done only for the OpenGL api, Vulkan must remain unchanged.
2021-03-04 14:14:49 -05:00
ameerj 0639244d85 renderer_opengl: Swizzle BGR textures on copy
OpenGL does not natively support BGR internal formats, which causes many BGR textures to render incorrectly, with Red and Blue channels swapped.

This commit aims to address this by swizzling the blue and red channels on texture copies when a BGR format is encountered.
2021-03-04 14:14:19 -05:00
bunnei b8b5891585
Merge pull request #5989 from ReinUsesLisp/cmdpool
vk_command_pool: Reduce the command pool size from 4096 to 4
2021-03-04 11:07:31 -08:00
bunnei 50ee9c46ab video_core: rasterizer_accelerated: Fix delta check ordering. 2021-03-02 17:48:02 -08:00
bunnei 6ab839462c video_core: rasterizer_accelerated: Improve error handling & fix implicit conversion. 2021-03-02 17:44:02 -08:00
bunnei 94da1e8a7e video_core: rasterizer_accelerated: Use a flat array instead of interval_map for cached pages.
- Uses a fixed 64MB for the cache instead of an ever growing map.
- Slightly faster by using atomics instead of a single mutex for access.
- Thanks for Rodrigo for the idea.
2021-03-02 16:57:53 -08:00
ReinUsesLisp 5ad62e7bfc buffer_cache: Heuristically decide to skip cache on uniform buffers
Some games benefit from skipping caches (Pokémon Sword), and others
don't (Animal Crossing: New Horizons). Add an heuristic to decide this
at runtime.

The cache hit ratio has to be ~98% or better to not skip the cache.
There are 16 frames of buffer.
2021-03-02 02:44:19 -03:00