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Set FBWrite Fifo length to 3 when running Monkey Hero

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This commit is contained in:
ds22x 2021-10-11 01:51:03 +02:00
parent 8b91df4d99
commit 2b1a2d7f7c
4 changed files with 13 additions and 1 deletions
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1
beetle_psx_globals.c
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@ -19,3 +19,4 @@ bool interlace_setting_dirty = false;
int aspect_ratio_setting = 0;
bool aspect_ratio_dirty = false;
bool is_monkey_hero = false;

1
beetle_psx_globals.h
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@ -38,6 +38,7 @@ extern bool interlace_setting_dirty;
extern int aspect_ratio_setting;
extern bool aspect_ratio_dirty;
extern bool is_monkey_hero;
#ifdef __cplusplus
}

6
libretro.cpp
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@ -1494,6 +1494,12 @@ static const char *CalcDiscSCEx_BySYSTEMCNF(CDIF *c, unsigned *rr)
if(!strncasecmp(bootpos, "cdrom:\\", 7))
{
bootpos += 7;
if(!strncmp(bootpos + 7, "SLUS_007.65", 11) || !strncmp(bootpos + 7, "SLES_009.79", 11))
{
is_monkey_hero = true;
log_cb(RETRO_LOG_INFO, "Monkey Hero FBWrite Tweak Activated\n");
}
char *tmp;
if((tmp = strchr(bootpos, '_'))) *tmp = 0;

6
mednafen/psx/gpu.cpp
View File

@ -34,6 +34,7 @@
#include "gpu_line.cpp"
extern bool crop_overscan;
extern bool is_monkey_hero;
/*
GPU display timing master clock is nominally 53.693182 MHz for NTSC PlayStations, and 53.203425 MHz for PAL PlayStations.
@ -534,6 +535,8 @@ static CTEntry Commands[256] =
static INLINE bool CalcFIFOReadyBit(void)
{
uint32_t ctcommand = (GPU_BlitterFIFO.Peek() >> 24);
if(GPU.InCmd & (INCMD_PLINE | INCMD_QUAD))
return(false);
@ -543,7 +546,8 @@ static INLINE bool CalcFIFOReadyBit(void)
if(GPU.InCmd & (INCMD_FBREAD | INCMD_FBWRITE))
return(false);
if(GPU_BlitterFIFO.in_count >= Commands[GPU_BlitterFIFO.Peek() >> 24].fifo_fb_len)
// Change fifo_fb_len from 2 to 3 for Command_FBWrite when running Monkey Hero.
if(GPU_BlitterFIFO.in_count >= Commands[GPU_BlitterFIFO.Peek() >> 24].fifo_fb_len + ((ctcommand >= 0xA0) && (ctcommand <= 0xBF) && is_monkey_hero ? 1 : 0))
return(false);
return(true);