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Improve the starfield emulation for the CPS1 games that use it

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Strider etc etc should look nicer now stars wise
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arcadez2003 2024-09-01 20:08:29 +01:00 committed by GitHub
parent 7d4e2ccc01
commit 4e37a655f3
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GPG Key ID: B5690EEEBB952194
1 changed files with 6 additions and 4 deletions
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10
src/vidhrdw/cps1_vidhrdw.c
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@ -1743,7 +1743,7 @@ void cps1_render_stars(struct mame_bitmap *bitmap,const struct rectangle *clipre
for (offs = 0;offs < stars_rom_size/2;offs++)
{
int col = stars_rom[8*offs+4];
if (col != 0x0f)
if ((col & 0x1f) != 0x0f)
{
int sx = (offs / 256) * 32;
int sy = (offs % 256);
@ -1755,7 +1755,8 @@ void cps1_render_stars(struct mame_bitmap *bitmap,const struct rectangle *clipre
sy = 255 - sy;
}
col = ((col & 0xe0) >> 1) + (cpu_getcurrentframe()/16 & 0x0f);
int cnt = (cpu_getcurrentframe() / 16 ) % ((col & 0x80) ? 15 : 16);
col = ((col & 0xe0) >> 1) + cnt;
if (sx >= cliprect->min_x && sx <= cliprect->max_x &&
sy >= cliprect->min_y && sy <= cliprect->max_y)
@ -1769,7 +1770,7 @@ void cps1_render_stars(struct mame_bitmap *bitmap,const struct rectangle *clipre
for (offs = 0;offs < stars_rom_size/2;offs++)
{
int col = stars_rom[8*offs];
if (col != 0x0f)
if ((col & 0x1f) != 0x0f)
{
int sx = (offs / 256) * 32;
int sy = (offs % 256);
@ -1781,7 +1782,8 @@ void cps1_render_stars(struct mame_bitmap *bitmap,const struct rectangle *clipre
sy = 255 - sy;
}
col = ((col & 0xe0) >> 1) + (cpu_getcurrentframe()/16 & 0x0f);
int cnt = (cpu_getcurrentframe() / 16 ) % ((col & 0x80) ? 15 : 16);
col = ((col & 0xe0) >> 1) + cnt;
if (sx >= cliprect->min_x && sx <= cliprect->max_x &&
sy >= cliprect->min_y && sy <= cliprect->max_y)