Commit Graph

24 Commits

Author SHA1 Message Date
Pierre Bourdon 3570c7f03a Reformat all the things. Have fun with merge conflicts. 2016-06-24 10:43:46 +02:00
Lioncash 32ce2be2bf Fifo: Make g_use_deterministic_gpu_thread a TU-local variable 2016-01-25 05:24:03 -05:00
Lioncash d9fec92628 VideoCommon: Header cleanup
Also remedies places where the video backends and core rely on things
being indirectly included.
2016-01-17 20:11:45 -05:00
degasus 5f244abf28 Fifo: Create a "Fifo" namespace. 2016-01-12 23:28:26 +01:00
Scott Mansell 636bedb207 XFMem: Don't warn on writes of zero to unknown registers. 2015-11-08 14:59:55 +13:00
Tillmann Karras c52c73f762 VideoCommon: VertexManager -> VertexManagerBase
It may be a bit weird to see calls to static functions in
VertexManagerBase now, but at least it's easier to see what's going on.
2015-11-02 11:53:54 +01:00
Lioncash 0e41b973c7 VertexShaderManager: Remove unused parameter 2015-08-16 21:07:10 -04:00
Tillmann Karras 30ebb2459e Set copyright year to when a file was created 2015-05-25 13:22:31 +02:00
Tillmann Karras cefcb0ace9 Update license headers to GPLv2+ 2015-05-25 13:22:31 +02:00
Jules Blok b406e4e1f2 VideoCommon: Add a separate constants buffer for the geometry shader. 2014-12-14 21:23:13 +01:00
degasus 21970c4a2a VideoCommon: cleanup OpcodeDecoder 2014-12-09 18:56:27 +01:00
comex 65af90669b Add the 'desynced GPU thread' mode.
It's a relatively big commit (less big with -w), but it's hard to test
any of this separately...

The basic problem is that in netplay or movies, the state of the CPU
must be deterministic, including when the game receives notification
that the GPU has processed FIFO data.  Dual core mode notifies the game
whenever the GPU thread actually gets around to doing the work, so it
isn't deterministic.  Single core mode is because it notifies the game
'instantly' (after processing the data synchronously), but it's too slow
for many systems and games.

My old dc-netplay branch worked as follows: everything worked as normal
except the state of the CP registers was a lie, and the CPU thread only
delivered results when idle detection triggered (waiting for the GPU if
they weren't ready at that point).  Usually, a game is idle iff all the
work for the frame has been done, except for a small amount of work
depending on the GPU result, so neither the CPU or the GPU waiting on
the other affected performance much.  However, it's possible that the
game could be waiting for some earlier interrupt, and any of several
games which, for whatever reason, never went into a detectable idle
(even when I tried to improve the detection) would never receive results
at all.  (The current method should have better compatibility, but it
also has slightly higher overhead and breaks some other things, so I
want to reimplement this, hopefully with less impact on the code, in the
future.)

With this commit, the basic idea is that the CPU thread acts as if the
work has been done instantly, like single core mode, but actually hands
it off asynchronously to the GPU thread (after backing up some data that
the game might change in memory before it's actually done).  Since the
work isn't done, any feedback from the GPU to the CPU, such as real
XFB/EFB copies (virtual are OK), EFB pokes, performance queries, etc. is
broken; but most games work with these options disabled, and there is no
need to try to detect what the CPU thread is doing.

Technically: when the flag g_use_deterministic_gpu_thread (currently
stuck on) is on, the CPU thread calls RunGpu like in single core mode.
This function synchronously copies the data from the FIFO to the
internal video buffer and updates the CP registers, interrupts, etc.
However, instead of the regular ReadDataFromFifo followed by running the
opcode decoder, it runs ReadDataFromFifoOnCPU ->
OpcodeDecoder_Preprocess, which relatively quickly scans through the
FIFO data, detects SetFinish calls etc., which are immediately fired,
and saves certain associated data from memory (e.g. display lists) in
AuxBuffers (a parallel stream to the main FIFO, which is a bit slow at
the moment), before handing the data off to the GPU thread to actually
render.  That makes up the bulk of this commit.

In various circumstances, including the aforementioned EFB pokes and
performance queries as well as swap requests (i.e. the end of a frame -
we don't want the CPU potentially pumping out frames too quickly and the
GPU falling behind*), SyncGPU is called to wait for actual completion.

The overhead mainly comes from OpcodeDecoder_Preprocess (which is,
again, synchronous), as well as the actual copying.

Currently, display lists and such are escrowed from main memory even
though they usually won't change over the course of a frame, and
textures are not even though they might, resulting in a small chance of
graphical glitches.  When the texture locking (i.e. fault on write) code
lands, I can make this all correct and maybe a little faster.

* This suggests an alternate determinism method of just delaying results
until a short time before the end of each frame.  For all I know this
might mostly work - I haven't tried it - but if any significant work
hinges on the competion of render to texture etc., the frame will be
missed.
2014-09-28 21:34:29 -04:00
comex f0131c2e09 Mechanical changes to move most CP state to a struct rather than separate globals.
The next commit will add a separate copy of the struct and the ability
for LoadCPReg to work on it.
2014-09-28 21:23:29 -04:00
Rohit Nirmal 46057db37d Fix build failing when disabling precompiled headers. 2014-09-19 18:17:51 -04:00
Rohit Nirmal fbc64984ca Include CommonTypes.h instead of Common.h. 2014-09-08 15:39:58 -04:00
degasus ef6f6a7fa9 VideoCommon: remove XFReg copy optimization
This code is just ugly and I doubt there is a way that copying twice is faster.
2014-09-04 17:56:17 +02:00
degasus 22e1aa5bb4 mark all local functions as static 2014-07-11 16:07:23 +02:00
degasus e456a5e64f PixelShader: remove the duplicated ppl constants 2014-06-19 16:33:33 +02:00
Ryan Houdek a4bb0dafb4 Removes ZeroFrog's "optimized" memcpy and memcmp functions.
These were only compiled in on Windows and x86_32.
They provided "optimized" copies and compares based on blocksizes for the AMD Athlon and Duron CPU families.
The code was taken from something that AMD provides with a as-is license.
Just get rid of this crap.
2014-05-17 18:03:31 -05:00
magumagu 1357277f40 Video backends: mass-replace "xfregs" with "xfmem". 2014-05-16 18:58:07 -07:00
magumagu 8f5342c442 Video backend: merge global var xfmem into xfregs.
There isn't really any reason to keep them separate.
2014-05-16 18:55:31 -07:00
magumagu 818c89313e Video backends: unify xfregs/xfmem structures.
Removes the duplicate swxfregs global variable/struct from the software
backend in favor of the ones from VideoCommon.
2014-05-16 18:55:30 -07:00
Lioncash 2afe215271 Convert all includes to relative paths. 2014-02-18 02:19:10 -05:00
Jasper St. Pierre 34692ab826 Remove unnecessary Src/ folders 2013-12-31 14:03:19 -05:00