doc: Update FAQ document
* Update system requirements to match README.md and remove references to v0.9.6
* Fix formatting issues, add link for DirectX and speed issues
It's not really used, and the OSD uses a different API.
The specified calling convention (stdcall) is also incorrect since
variadic functions are caller-clean, not callee-clean. The compilers
ignore the stdcall and just use cdecl (I think), though it does trigger
a -Wcast-calling-convention on clang.
It seems not all DMA channels have the same set of 32 bit registers. Removed
addresses of registers which aren't actually present in the memory
space.
Example: Channel 0/1/2 have address stack registers but the other
channels lack it. According to documents, the remaining memory space of
the channels seems to be reserved. Which means, write access would be
disregarded and read access would return an unknown value.
Credit goes to Gregory and CK1 for notifying me about it, special mention to ssakash for actually pushing the change to github. Also I wasn't the one who introduced the non-existent registers into the code, these registers were present before under a different name.
The macro for address of channel 9 was wrongly having the address of
channel 8, fixed it. (Luckily MADR and QWC were unused so we should be
safe)
Thanks to Fireboyd78 for notifying us about this. (Closes#2091)
Also fixed some inconsistencies where some of the DMA channel register
addresses weren't defined for all the bitfields.
If emulation is paused and resumed, vsync may become enabled even if the
frame limiter is currently disabled. This state persists until the
settings are changed or the hotkeys are used.
Fix the inconsistent framelimiter/vsync behaviour so that vsync isn't
enabled whenever the framelimiter is disabled, which matches the
behaviour in the rest of the code.
The safest preset should ideally try to provide
the highest accuracy and stability when emulating the
PS2, allowing the manipulation of the MTVU hack could
just destroy both of these things, hence the following patch
force disables the hack on safest preset.
v2: allow all combinations of framelimiter and vsync options
v3:
* disable vsync when the user disable framelimiter with F4
* Use g_Conf->EmuOptions instead of EmuConfig
The scalar limit value was updated only during any turbo/slowmotion
toggle, let's also update it properly after any change in the emulation
settings.
This prevents the need of toggling from turbo/slowmotion to update to
your requested frame rate percentage.
Current behavior - The tilebar isn't updated when the user enters full screen mode and when the user returns back to windowed mode they have the older title bar values for a brief second, this sort of behavior is undesirable just in the cost of saving some overhead for updating title. (which is really negligent)
Hence reverting the code back to how it has been for the past 7 years (Yes, I did my research), I'm doing it only for the windows side at the moment as a code comment describes of some sort of Linux specific issue on wxWidgets side.
The default 12 is rather low and won't suffice for most cases, updating
it to 20 to give some extra space for additional ISOs. Incrementing it
to an even higher value might not be so good as it consumes lots of
vertical space, not a nice idea for people with smaller screens.
Thanks to @colepcsx2 (https://github.com/PCSX2/pcsx2/pull/1896#commitcomment-21858717) for pointing it out!
I also updated the prefix in the inferior video mode detection of GSdx, I'm not even sure why we need the videomode info on the plugin side, might be useful someday.
The title bar will display "progressive" for 1-2 seconds when booting an interlaced game at some cases, it's due to an uninitialized SMODE2 register, so let's wait till the rendering starts to allow time for the
SMODE2 init and get the proper values from games.
My guess is that GCC reports an warning because of the default case.
I don't think we support yet __builtin_unreachable on Linux
Nevertheless it will still be an issue in non-release build
This reverts commit 99180f5afb.
Unfortunately Mint/Arch got segmentation fault in Xlib mutex locking...
Sadly Xlib will be back to thread-unsafe mode.
I'm cooking another solution based on EGL
X11 isn't thread safe by default. It make sense in 1990 but it is ugly nowadays.
The trick is that is must called before any X11 function. So the only
safe place is at the start of the main. Pcsx2App::OnInit() is the
sooner that I've found.
Fixes an issue where the game will either boot the wrong CDVD source or
fail to boot if the current CDVD option doesn't match the option
specified in the command line.
Improved the video mode detection code by also detecting the DVD variant video modes of NTSC & PAL, PSX mode actually make use of these specific variants, as well as the BIOS. Previously, I just had them as a single bios video mode due to laziness. (I know, my bad)
After further research, it seems that these DVD variant modes have their own individual VSync timing values similar to the standard NTSC & PAL video modes, dealing with those timer codes might be essential in getting timing accuracy of the PSX mode games. (I kept it to default NTSC/PAL values for now, interested people can mess with it later)
I had planned to do this before but there some were concerns that two different video modes make use of 0x73 gate in SetGsCrt, which was rather weird (how the heck could two video modes be used in a single param value?)
0x73- DVDPAL ( 720 x 480 @ ??.???Hz)
0x73- DVD480P ( 720 x 480 @ ??.???Hz)
Hence, we had decided to use the CMOD bit from SMODE1 (AKA color subcarrier frequency) to detect whether it's an analog or digital video mode and update the necessary timing values but seems like it's no longer necessary, after further discussions from some PS2 developers, we've come to the conclusion that only DVDPAL is possible via 0x73 in SetGsCrt. (So I assume the DVD480p init possibility was fake info from Blue and those other GSM guys who were reverse engineering the PS2)
Remove full path from every plugin binding and only add it to the
preceding "Loading Plugins..." line.
Instead the revision date and version number are printed for each plugin
to make it easier to identify issues with plugin versions.
Previously, the OSD neglected to mention any sort of message when the savestate load is failed, the following patch now also prints a message on OSD when detecting such cases of loading an incomplete/corrupt savestate.
This prevents the internal state of the objects from becoming
inconsistent, which causes inflate() to fail with recent zlib versions
(1.2.9 and later).
EE interpeter: remove unused argument
rdd is neither used, nor needed. It appears it was there to pass the _Rd_ word to write to, but the writing was moved to PHMSBH() to have one "if (_Rd_)".
Add a note on undefined behavior
The ring buffer is composed of severals read/write by transaction.
Atomic operations are only required at the start/end of the full
transaction. In the middle, you can use normal variable (optimization
opportunity for the compiler)
Use acquire/release semantics on isBusy and vuCycles to remain 100% safe
(relaxed might be doable but better be safe than sorry)
Use dedicated cache line for atomic variable to avoid any conflict between CPU
The struct is copied in various ring buffer (hot path)
We only need the return status of the function so use a reference instead of
a state variable
Side note: if we align the struct to 16B maybe the compiler can use SSE to copy it.
Warning: it breaks save state compatibility
Hopefully this translates well to slower systems :)
Tekken Tag:
Before: 79-81fps
After: 82-84fps
Front Mission 4 intro (as it pans over the roofs)
Before: 158-159fps
After: 165-166fps
Previously, the seconds variable of the RTC was updated on progressive modes after every 50 Vsyncs, which was obviously wrong. The code has been adjusted to update the RTC with respect to the vertical frequencies of various other video modes.
16B alignment is now useless for nVifBlock (no more SSE)
However update the alignment of bucket to 64B. It will reduce cache miss
probability in the find loop
It avoids memory stalls and greatly reduces the overhead of the dVifUnpack function
Here a vtune summary of this branch (done on SotC init)
dVifUnpack<1> was 14.5% of effective VU thread time
dVifUnpack<1> is now 3.8% of effective VU thread time
I hope it will translate to better fps
Delete() deletes the menu item but keeps the sub menu. Remove() doesn't
delete the menu item.
Also use AppendSubMenu - using Append on a submenu is deprecated.
It allow to compare only 8B in the lookup so SSE could be replaced with general instruction
As a bonus, it allow to compute the hash key with a mov rather than modulo (which was an 'and')
Jackson Sommerich