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EmuNewz Network › PSP Emulation › PPSSPP UnOfficial Forum › github discussion
Performance with same codes achievement as jpcsp

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Performance with same codes achievement as jpcsp
jacky400 Offline
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#1
11-20-2012, 01:20 AM
Hi Hydgard,

When ppsspp has same codes archivement as jpcsp one day , will there be any major difference in performance ? (C++ vs Java)
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shadow Offline
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#2
11-20-2012, 11:17 AM
c++ is a native language , java is a hle language so supposely it will be faster since a lot more optimizations can be done natively
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jacky400 Offline
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#3
11-20-2012, 01:37 PM
(11-20-2012, 11:17 AM)shadow Wrote: c++ is a native language , java is a hle language so supposely it will be faster since a lot more optimizations can be done natively

That's great . Looking forward the mediaengine linking to FFMPEG soon.
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shin x Offline
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#4
11-21-2012, 01:38 PM (This post was last modified: 11-21-2012, 01:39 PM by shin x.)
c++ is faster than java !!! great news !!!!!!!! but i wonder why did the devs use java in the first place ? just a question, dont go to another thing loool
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Gundark Offline
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#5
11-23-2012, 10:18 AM (This post was last modified: 11-23-2012, 10:19 AM by Gundark.)
(11-21-2012, 01:38 PM)shin x Wrote: c++ is faster than java !!! great news !!!!!!!! but i wonder why did the devs use java in the first place ? just a question, dont go to another thing loool

I suppose that devs are more comfortable with java and because they wanted to prove that it's possible. And they did a good job.
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shin x Offline
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#6
11-23-2012, 07:13 PM
well maybe thats what they wanted to do
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ector Offline
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#7
11-30-2012, 05:58 PM
It will likely be quite a bit faster yes.

I also think you guys should join the official forums too, http://forums.ppsspp.org Wink

The registration emails appear to currently get caught in some spam filters though, so check your spam boxes when registering...
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jacky400 Offline
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#8
12-01-2012, 04:50 AM
Just got activiated on ppsspp.org forum .
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hlide Offline
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#9
04-13-2013, 10:00 AM
HLE = High Level Emulation
LLE = Low Level Emulation

PSP has an OS which is a collection of modules. Those modules offer some API to handle any I/O devices without letting game developers directly to deal with hardware.

HLE = API emulation
LLE = Hardware emulation

ppsspp and jpcsp are HLE because they don't try to emulate the hardware but run equivalent modules rewritten in native code.

- critical code coded in Java are less efficient than one coded in native code through C++. The last comparison i saw between Java and C++ was biased in favor of Java because they compared with native code compiled through C++ in debug (unoptimized, the worst).
- development in Java is simpler and easier to debug.
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hell321 Offline
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#10
07-25-2013, 02:37 AM (This post was last modified: 07-25-2013, 02:41 AM by hell321.)
jpcsp currently broken because java update

C++ easy to debug than java in term of code and optimized and stable

i also don't understand they say java almost near speed to C++

i think they too biased for java

we got alot of example C++ emulator pcsx2 , epsxe so on....
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