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Add option to remove per-line sprite limits

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This commit is contained in:
Brian Koropoff 2017-10-02 19:50:23 -07:00
parent 603a532be2
commit e0ef0902e9
3 changed files with 47 additions and 16 deletions
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44
core/vdp_render.c
View File

@ -43,6 +43,14 @@
#include "md_ntsc.h"
#include "sms_ntsc.h"
#ifndef HAVE_NO_SPRITE_LIMIT
#define MAX_SPRITES_PER_LINE 20
#define TMS_MAX_SPRITES_PER_LINE 4
#define MODE4_MAX_SPRITES_PER_LINE 8
#define MODE5_MAX_SPRITES_PER_LINE (bitmap.viewport.w >> 4)
#define MODE5_MAX_SPRITE_PIXELS max_sprite_pixels
#endif
/*** NTSC Filters ***/
extern md_ntsc_t *md_ntsc;
extern sms_ntsc_t *sms_ntsc;
@ -584,7 +592,7 @@ typedef struct
uint16 size;
} object_info_t;
static object_info_t obj_info[2][20];
static object_info_t obj_info[2][MAX_SPRITES_PER_LINE];
/* Sprite Counter */
static uint8 object_count[2];
@ -3149,6 +3157,7 @@ void render_obj_m5(int line)
int xpos, width;
int pixelcount = 0;
int masked = 0;
int max_pixels = MODE5_MAX_SPRITE_PIXELS;
uint8 *src, *s, *lb;
uint32 temp, v_line;
@ -3213,10 +3222,10 @@ void render_obj_m5(int line)
lb = &linebuf[0][0x20 + xpos];
/* Max. number of sprite pixels rendered per line */
if (pixelcount > max_sprite_pixels)
if (pixelcount > max_pixels)
{
/* Adjust number of pixels to draw */
width -= (pixelcount - max_sprite_pixels);
width -= (pixelcount - max_pixels);
}
/* Number of tiles to draw */
@ -3235,7 +3244,7 @@ void render_obj_m5(int line)
}
/* Sprite limit */
if (pixelcount >= max_sprite_pixels)
if (pixelcount >= max_pixels)
{
/* Sprite masking is effective on next line if max pixel width is reached */
spr_ovr = (pixelcount >= bitmap.viewport.w);
@ -3258,6 +3267,7 @@ void render_obj_m5_ste(int line)
int xpos, width;
int pixelcount = 0;
int masked = 0;
int max_pixels = MODE5_MAX_SPRITE_PIXELS;
uint8 *src, *s, *lb;
uint32 temp, v_line;
@ -3325,9 +3335,9 @@ void render_obj_m5_ste(int line)
lb = &linebuf[1][0x20 + xpos];
/* Adjust number of pixels to draw for sprite limit */
if (pixelcount > max_sprite_pixels)
if (pixelcount > max_pixels)
{
width -= (pixelcount - max_sprite_pixels);
width -= (pixelcount - max_pixels);
}
/* Number of tiles to draw */
@ -3346,7 +3356,7 @@ void render_obj_m5_ste(int line)
}
/* Sprite limit */
if (pixelcount >= max_sprite_pixels)
if (pixelcount >= max_pixels)
{
/* Sprite masking is effective on next line if max pixel width is reached */
spr_ovr = (pixelcount >= bitmap.viewport.w);
@ -3376,6 +3386,7 @@ void render_obj_m5_im2(int line)
int pixelcount = 0;
int masked = 0;
int odd = odd_frame;
int max_pixels = MODE5_MAX_SPRITE_PIXELS;
uint8 *src, *s, *lb;
uint32 temp, v_line;
@ -3440,9 +3451,9 @@ void render_obj_m5_im2(int line)
lb = &linebuf[0][0x20 + xpos];
/* Adjust width for sprite limit */
if (pixelcount > max_sprite_pixels)
if (pixelcount > max_pixels)
{
width -= (pixelcount - max_sprite_pixels);
width -= (pixelcount - max_pixels);
}
/* Number of tiles to draw */
@ -3461,7 +3472,7 @@ void render_obj_m5_im2(int line)
}
/* Sprite Limit */
if (pixelcount >= max_sprite_pixels)
if (pixelcount >= max_pixels)
{
/* Sprite masking is effective on next line if max pixel width is reached */
spr_ovr = (pixelcount >= bitmap.viewport.w);
@ -3485,6 +3496,7 @@ void render_obj_m5_im2_ste(int line)
int pixelcount = 0;
int masked = 0;
int odd = odd_frame;
int max_pixels = MODE5_MAX_SPRITE_PIXELS;
uint8 *src, *s, *lb;
uint32 temp, v_line;
@ -3552,9 +3564,9 @@ void render_obj_m5_im2_ste(int line)
lb = &linebuf[1][0x20 + xpos];
/* Adjust width for sprite limit */
if (pixelcount > max_sprite_pixels)
if (pixelcount > max_pixels)
{
width -= (pixelcount - max_sprite_pixels);
width -= (pixelcount - max_pixels);
}
/* Number of tiles to draw */
@ -3573,7 +3585,7 @@ void render_obj_m5_im2_ste(int line)
}
/* Sprite Limit */
if (pixelcount >= max_sprite_pixels)
if (pixelcount >= max_pixels)
{
/* Sprite masking is effective on next line if max pixel width is reached */
spr_ovr = (pixelcount >= bitmap.viewport.w);
@ -3654,7 +3666,7 @@ void parse_satb_tms(int line)
if ((ypos >= 0) && (ypos < height))
{
/* Sprite overflow */
if (count == 4)
if (count == TMS_MAX_SPRITES_PER_LINE)
{
/* Flag is set only during active area */
if (line < bitmap.viewport.h)
@ -3750,7 +3762,7 @@ void parse_satb_m4(int line)
if ((ypos >= 0) && (ypos < height))
{
/* Sprite overflow */
if (count == 8)
if (count == MODE4_MAX_SPRITES_PER_LINE)
{
/* Flag is set only during active area */
if ((line >= 0) && (line < bitmap.viewport.h))
@ -3796,7 +3808,7 @@ void parse_satb_m5(int line)
int count = 0;
/* max. number of rendered sprites (16 or 20 sprites per line by default) */
int max = bitmap.viewport.w >> 4;
int max = MODE5_MAX_SPRITES_PER_LINE;
/* max. number of parsed sprites (64 or 80 sprites per line by default) */
int total = max_sprite_pixels >> 2;

11
libretro/libretro.c
View File

@ -543,6 +543,7 @@ static void config_default(void)
#ifdef HAVE_OVERCLOCK
config.overclock = 0;
#endif
config.no_sprite_limit = 0;
/* video options */
config.overscan = 0;
@ -1271,6 +1272,15 @@ static void check_variables(void)
}
#endif
var.key = "genesis_plus_gx_no_sprite_limit";
environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var);
{
if (strcmp(var.value, "disabled") == 0)
config.no_sprite_limit = 0;
else
config.no_sprite_limit = 1;
}
if (reinit)
{
#ifdef HAVE_OVERCLOCK
@ -1718,6 +1728,7 @@ void retro_set_environment(retro_environment_t cb)
#ifdef HAVE_OVERCLOCK
{ "genesis_plus_gx_overclock", "CPU speed; 100%|125%|150%|175%|200%" },
#endif
{ "genesis_plus_gx_no_sprite_limit", "Remove per-line sprite limit; disabled|enabled" },
{ NULL, NULL },
};

8
libretro/osd.h
View File

@ -76,6 +76,13 @@ typedef unsigned char bool;
#define HAVE_YM3438_CORE
#define HAVE_NO_SPRITE_LIMIT
#define MAX_SPRITES_PER_LINE 80
#define TMS_MAX_SPRITES_PER_LINE (config.no_sprite_limit ? MAX_SPRITES_PER_LINE : 4)
#define MODE4_MAX_SPRITES_PER_LINE (config.no_sprite_limit ? MAX_SPRITES_PER_LINE : 8)
#define MODE5_MAX_SPRITES_PER_LINE (config.no_sprite_limit ? MAX_SPRITES_PER_LINE : (bitmap.viewport.w >> 4))
#define MODE5_MAX_SPRITE_PIXELS (config.no_sprite_limit ? MAX_SPRITES_PER_LINE * 32 : max_sprite_pixels)
typedef struct
{
int8 device;
@ -121,6 +128,7 @@ struct
uint8 invert_mouse;
uint8 gun_cursor;
uint32 overclock;
uint8 no_sprite_limit;
} config;
extern char GG_ROM[256];