As far as I can tell, it has nothing to do with the mipmap/half_scale functionality, but does change based on the width of the destination texture (and the destination texture is half the width if half_scale is set). The comment that was there (which dates back to the initial megacommit) seems to not have accounted for the width aspect; it was first used as an actual stride in bbbe898839 (the first commit that used it at all).
Since ccf92a3e56, recording fifologs multiple times after launching dolphin caused all initial state to not be saved (the initial contents of bpmem, cpmem, etc were all zeroed out). For some games, this was not noticeable, as most registers were set each frame, but for others, this resulted in completely broken fifologs. (Note that recording fifologs also required 05181f6b88 and 9e0755a598 to be cherry-picked due to other, since fixed, regressions.)
This was because previously, `Renderer::CheckFifoRecording` was called every frame, but ccf92a3e56 changed it into a callback (`m_end_of_frame_event`) that was removed when recording ended. Thus, before, `OpcodeDecoder::g_record_fifo_data = IsRecording()` was called when `IsRecording()` returned false, but after that commit `g_record_fifo_data` never got changed back to false, so the check for `was_recording` only ever passed on the first fifolog recorded (even after stopping and starting a game).
There may still be another issue lurking, as I'm not sure if all broken fifologs were caused by recording multiple fifologs (for instance, on https://bugs.dolphin-emu.org/issues/13377, only one fifolog was initially uploaded, but it was affected by an issue with the same symptoms as this).
Mesa (llvmpipe) only reports 4x MSAA, and doesn't report 2x (or 1x, but we implicitly add that). The old logic did not handle this correctly, causing selecting 4x to fail and fall back to None.
This also removes VideoUtils::GetAvailableAntialiasingModes, and thus VideoUtils entirely, as its only other function was removed in 1f74653501.
See https://bugs.dolphin-emu.org/issues/13248. This is needed for the menus to work properly (not run at 1FPS and render incorrectly). Additionally, immediate XFB causes flickering.
Before, any call of Settings::SetDebugModeEnabled(true) would show it. This means that if the debugging UI is enabled, but the user manually closed the code widget, then toggling any option on the interface pane (such as "Pause on Focus Loss") would cause the code widget to reappear. Additionally, closing and reopening dolphin did not call SetDebugModeEnabled, so the code widget did not reappear in that case (it only appeared after touching the interface pane). This is a bit silly, so now only enabling the debugger does it.
This also somewhat resolves an inconsistency introduced by the previous commit: prior to it, --debugger would call SetDebugModeEnabled(true) and thus show the code pane; after these commits, it does not, as it acts like a config change. This is a behavior difference, but not a particularly important one.
Before, Settings::SetDebugModeEnabled was used; this calls SetBaseOrCurrent() which will usually permanently change the base configuration setting for the debugger to true. Thus, the debugger would remain active even if the --debugger command line option was removed. Now, it remains active only for the current run, like other command-line options.
Note that SetBaseOrCurrent is also used by the "Show Debugging UI" option under Options -> Interface; this means that if the debugger is turned off (or off and then back on) by the user while --debugger is specified, this will be reset to whatever the base configuration had when Dolphin is closed and reopened. This behavior is consistent with the rest of the UI.
To my understanding, the --debugger option is something from 5.0 stable/DolphinWx where there was no way to toggle the debug UI in the settings (and the command-line option was the only way of enabling it). It's less useful nowadays.
bSupports2DTextureStorageMultisample is completely unused, while bSupports3DTextureStorageMultisample is practically unused. In the past, these were checked and fell back to sampler2DMS instead of sampler2DMSArray on GLES 3.1, but this path was removed in f039149198 and Dolphin always uses array textures now.
See https://bugs.dolphin-emu.org/issues/13232; this was introduced in 7dde0c3c31. Apparently, providing a parent for a widget that is not visible makes your new widget visible when the parent is later made visible, in addition to managing the deletion of the widget; the documentation does not specify this (only that if the parent is visible you need to explicitly show it).
The inst.SIMM_16 change is for readability (though it also fixes a warning about potentially unintended uses of `||`).
The fallback change is because `b` is only meaningful for indexed instructions; this could theoretically lead to unintended fallbacks (but it seems unlikely).
This fixes a crash when recording fifologs, as the mutex is acquired when BPWritten calls AfterFrameEvent::Trigger, but then acquired again when FifoRecorder::EndFrame calls m_end_of_frame_event.reset(). std::mutex does not allow calling lock() if the thread already owns the mutex, while std::recursive_mutex does allow this.
This is a regression from #11522 (which introduced the HookableEvent system).
When that setting is enabled, m_xfb_entry is initially not present (during the phase where a shader compilation progress bar would be shown). The main path checks for m_xfb_entry, but the software renderer fallback path didn't.
Fixes another aspect of https://bugs.dolphin-emu.org/issues/13172.
Before, it used a fallback where it returned a default object, where the width and height were set to 0. Presenter::Initialize() used GetSurfaceInfo to set the backbuffer size, then used that size when initializing the on-screen UI (even for the software renderer, where the on-screen UI isn't currently present), which meant that ImGui got a window size of 0 and thus resulted in a failed assertion.
Although BindBackbuffer checks for size changes, it doesn't help because ImGui has already been initialized, and the size hasn't actually changed since initialization occured.
Fixes one aspect of https://bugs.dolphin-emu.org/issues/13172.
This broke formatting the system memory; see https://bugs.dolphin-emu.org/issues/13176. After calling ticket.DeleteTicket(), ticket.m_bytes was 0-length, but calling ticket.IsV1Ticket() still attempted to read from m_bytes.
This was introduced in 2fd9852ca8, although it didn't actually cause a crash until 929fba08e7.
This resulted in the labels being solid black even when audio stretching is disabled the first time the settings are opened, but then properly being greyed out after changing a setting (even the audio backend or DSP emulation engine, not just whether audio stretching is enabled).
Doing so is not allowed (presumably because compilers are allowed to use a different algorithm for allocating between the two/store extra data such as the length of the array before the pointer).
This bug existed in the original implementation at https://web.archive.org/web/20140708092159/http://www.hydrogenaud.io/forums/index.php?showtopic=52235 and causes Valgrind to emit a warning. Note that this ended up happening even if DSPLLE and the DPL decoder are not enabled in Dolphin.
This works around an Intel driver bug where, on D3D12 only, dual-source blending behaves incorrectly if the second source is unused on. This bug is visible in skyboxes in Super Mario Sunshine, which first draw clouds and sun flare in greyscale and then draw the sky afterwards with a source factor of 1 and a dest factor of 1-src_color (this results in the clouds being tinted blue). This process is done on an RGB888 framebuffer, so alpha update is disabled. (Color update is enabled; note that if you look at this in Dolphin's fifo analyzer, it won't be enabled because they use the BP mask functionality to only change the blending functions and not alpha/color update, for whatever reason.)
The previous code only updated the PLRU on cache misses, which made it so that the least recently inserted cache block was evicted, instead of the least recently used/hit one.
This regressed in 9d39647f9e (part of #11183, but it was fine in e97d380437), although beforehand it was only implemented for the instruction cache, and the instruction cache hit extremely infrequently when the JIT or cached interpreter is in use, which generally keeps it from behaving correctly (the pure interpreter behaves correctly with it).
I'm not aware of any games that are affected by this, though I did not do extensive testing.
This code doesn't need to be portable (since the goal is to have a smaller offset for x64 codegen), so if it's not supported there are other problems. Similar code exists in e.g. DSP.cpp.
The logging was broken in 958cbf38a4 (DSPTool doesn't use dolphin's logging system, so it just produced nothing; the same thing affected comparing before 693a29f8ce).
AssemblerError::LabelAlreadyExists (previously ERR_LABEL_EXISTS) simply was never used.
This reverts commit e140516130. This assert triggers for AX and AXWii uCode games (including the Wii System Menu) for various addresses that seem to be 4-byte aligned. Worse still, if the DSP thread is in use (i.e. for DSP LLE recompiler, but not for DSP LLE interpreter), Dolphin completely hangs after the panic alert. Perhaps the data DMA has fewer restrictions compared to the instruction DMA?
The change to DSPTool (e391a28102) has not been reverted, as it still fixes broken behavior for DSPSpy at -O0 on real hardware.
I haven't tested this extensively on real hardware, but I do know that bad things happen if the address isn't properly aligned, and libogc says it should be 32-byte aligned.
This is the behavior in the x64 and ARM64 vertex loaders. I don't know if it makes sense (the whole skipped vertex system seems jank, but several games behave incorrectly without it).
This generated a warning on GCC about the operation being potentially undefined (-Wsequence-point). I'm not sure if that was actually the case, but either way it is a mistake.
Before, it was also compiled on ARM builds, but since it was unused it wasn't linked (and thus its dependency on the nonexistent x64Emitter didn't cause any link issues).
For some reason, when this is included, the linking step creates a temporary file in %TEMP% with a random name; the file is deleted afterwards and a new random name is used on a later build. Because this file doesn't exist on a later build, curl gets re-linked each time, and then all of the projects that depend on curl also get re-linked. This adds around 10 seconds to the build time even for small changes.
To make things worse, I don't think libcurl.rc does anything useful since we statically link curl; I believe the metadata contained in it only applies when building a dll. (It does seem to be included in curl.lib, but gets discarded when linking Dolphin.exe.)
See Build\x64\Release\curl\curl.tlog\Lib-link-cvtres.write.1.tlog for the log that shows this path (the file is also mentioned after setting Tools -> Options... -> Projects and Solutions -> Build and Run -> MSBuild project build output verbosity to diagnostic, but not in a useful way).
Fixes incorrect logspam when the buffer needed to be reset on flushes (which we already were doing, but 52feed04db moved it to after the check was made). This is https://bugs.dolphin-emu.org/issues/10312.
I also converted it to an assert, as if this does happen, things are going to render incorrectly, so we want to make it obvious.
Pokechu22