diff options
Diffstat (limited to 'libretro/libretro.c')
| -rw-r--r-- | libretro/libretro.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/libretro/libretro.c b/libretro/libretro.c index b7d371c..959d2e6 100644 --- a/libretro/libretro.c +++ b/libretro/libretro.c @@ -91,6 +91,7 @@ static uint32 joys[5]; bool8 ROMAPUEnabled = 0; char currentWorkingDir[MAX_PATH+1] = {0}; +bool overclock_cycles = false; memstream_t *s_stream; @@ -351,10 +352,17 @@ static void snes_init (void) void retro_init (void) { + static const struct retro_variable vars[] = + { + { "snes9x2002_overclock_cycles", "CPU Overclock (Hack, Unsafe, Restart); disabled|enabled" }, + { NULL, NULL }, + }; + if (!environ_cb(RETRO_ENVIRONMENT_GET_OVERSCAN, &use_overscan)) use_overscan = FALSE; snes_init(); + environ_cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void*)vars); } /* libsnes uses relative values for analogue devices. @@ -414,10 +422,31 @@ static void report_buttons (void) } } +static void check_variables(void) +{ + struct retro_variable var; + + var.key = "snes9x2002_overclock_cycles"; + var.value = NULL; + + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) + { + if (strcmp(var.value, "enabled") == 0) + overclock_cycles = true; + else + overclock_cycles = false; + } +} + //#define FRAME_SKIP void retro_run (void) { + bool updated = false; + + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated) + check_variables(); + #ifdef FRAME_SKIP IPPU.RenderThisFrame = !IPPU.RenderThisFrame; #else @@ -517,6 +546,8 @@ bool retro_load_game(const struct retro_game_info *game) bool8 loaded; enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565; + check_variables(); + if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) { fprintf(stderr, "[libretro]: RGB565 is not supported.\n"); |