valter/dosbox-staging
1
0
Fork 0
Code Releases Activity

max cycles code now uses averaging as well when stepping down

Browse source 
Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3816
This commit is contained in:
Peter Veenstra 2013-02-07 19:25:58 +00:00
parent 2c8adb2660
commit 68317303e6
1 changed files with 5 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
src/dosbox.cpp
View file

@ -179,7 +179,7 @@ increaseticks:
Bit32s new_cmax = CPU_CycleMax;
Bit64s cproc = (Bit64s)CPU_CycleMax * (Bit64s)ticksScheduled;
if (cproc > 0) {
/* ignore the cycles added due to the io delay code in order
/* ignore the cycles added due to the IO delay code in order
to have smoother auto cycle adjustments */
double ratioremoved = (double) CPU_IODelayRemoved / (double) cproc;
if (ratioremoved < 1.0) {
@ -189,10 +189,13 @@ increaseticks:
if (ticksScheduled >= 250 && ticksDone < 10 && ratio > 20480)
ratio = 20480;
Bit64s cmax_scaled = (Bit64s)CPU_CycleMax * (Bit64s)ratio;
/* The auto cycle code seems reliable enough to disable the fast cut back code.
* This should improve the fluency of complex games.
if (ratio <= 1024)
new_cmax = (Bit32s)(cmax_scaled / (Bit64s)1024);
else
new_cmax = (Bit32s)(1 + (CPU_CycleMax >> 1) + cmax_scaled / (Bit64s)2048);
*/
new_cmax = (Bit32s)(1 + (CPU_CycleMax >> 1) + cmax_scaled / (Bit64s)2048);
}
}