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sms, add ghosting for GG LCD (generic+libretro only)

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This commit is contained in:
kub 2021-11-04 20:33:28 +01:00
parent 27005bdb5f
commit f55ce7bf47
7 changed files with 135 additions and 18 deletions
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42
platform/libretro/libretro.c
View file

@ -40,6 +40,8 @@
#include <malloc.h>
#include "libretro-common/include/libretro_gskit_ps2.h"
#include "ps2/asm.h"
#else
#include <platform/common/upscale.h>
#endif
#ifdef _3DS
@ -93,7 +95,6 @@ static const float VOUT_4_3 = (4.0f / 3.0f);
static const float VOUT_CRT = (1.29911f);
static bool show_overscan = false;
static bool old_show_overscan = false;
/* Required to allow on the fly changes to 'show overscan' */
static int vm_current_start_line = -1;
@ -103,9 +104,10 @@ static int vm_current_col_count = -1;
static int vout_16bit = 1;
static int vout_format = PDF_RGB555;
static void *vout_buf;
static void *vout_buf, *vout_ghosting_buf;
static int vout_width, vout_height, vout_offset;
static float vout_aspect = 0.0;
static int vout_ghosting = 0;
#if defined(RENDER_GSKIT_PS2)
#define VOUT_8BIT_WIDTH 328
@ -672,6 +674,12 @@ void emu_video_mode_change(int start_line, int line_count, int start_col, int co
VOUT_MAX_HEIGHT : vout_height;
vout_offset = (vout_offset > vout_width * (VOUT_MAX_HEIGHT - 1) * 2) ?
vout_width * (VOUT_MAX_HEIGHT - 1) * 2 : vout_offset;
/* LCD ghosting */
if (vout_ghosting && vout_height == 144) {
vout_ghosting_buf = realloc(vout_ghosting_buf, VOUT_MAX_HEIGHT*vout_width*2);
memset(vout_ghosting_buf, 0, vout_width*vout_height*2);
}
#endif
Pico.m.dirtyPal = 1;
@ -1443,6 +1451,7 @@ static void update_variables(bool first_run)
double new_sound_rate;
unsigned short old_snd_filter;
int32_t old_snd_filter_range;
bool old_show_overscan;
var.value = NULL;
var.key = "picodrive_input1";
@ -1506,6 +1515,17 @@ static void update_variables(bool first_run)
PicoIn.hwSelect = PMS_MAP_SEGA;
}
var.value = NULL;
var.key = "picodrive_ggghost";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
if (strcmp(var.value, "normal") == 0)
vout_ghosting = 2;
else if (strcmp(var.value, "weak") == 0)
vout_ghosting = 1;
else
vout_ghosting = 0;
}
OldPicoRegionOverride = PicoIn.regionOverride;
var.value = NULL;
var.key = "picodrive_region";
@ -1818,6 +1838,20 @@ void retro_run(void)
}
}
if (vout_ghosting && vout_height == 144) {
unsigned short *pd = (unsigned short *)vout_buf;
unsigned short *ps = (unsigned short *)vout_ghosting_buf;
int y;
for (y = 0; y < VOUT_MAX_HEIGHT; y++) {
if (vout_ghosting == 1)
v_blend(pd, ps, vout_width, p_075_round);
else
v_blend(pd, ps, vout_width, p_05_round);
pd += vout_width;
ps += vout_width;
}
}
buff = (char*)vout_buf + vout_offset;
#endif
@ -1913,6 +1947,10 @@ void retro_deinit(void)
free(vout_buf);
#endif
vout_buf = NULL;
if (vout_ghosting_buf)
free(vout_ghosting_buf);
vout_ghosting_buf = NULL;
PicoExit();
for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {

12
platform/libretro/libretro_core_options.h
View file

@ -125,6 +125,18 @@ struct retro_core_option_definition option_defs_us[] = {
},
"Auto"
},
{
"picodrive_ggghost",
"Game Gear LCD ghosting",
"Enable LCD ghosting emulation.",
{
{ "off", NULL },
{ "weak", NULL },
{ "normal", NULL },
{ NULL, NULL },
},
"off"
},
{
"picodrive_region",
"Region",