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[Core/VDP] fixed Mode 4 sprite Y wrapping in various screen height modes (fixes VDP Test ROM / Fantastic Dizzy)

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This commit is contained in:
EkeEke 2016-05-08 17:09:31 +02:00
parent 6a0fdd10df
commit d8ebe96491
5 changed files with 3 additions and 3 deletions
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builds/genesis_plus_gx_libretro.dll
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builds/genplus_cube.dol
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2
core/system.c
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@ -1366,7 +1366,7 @@ void system_frame_sms(int do_skip)
/* Master System & Game Gear VDP specific */ /* Master System & Game Gear VDP specific */
else else
{ {
/* Sprites are still processed during vertical borders */ /* Sprites are still processed during top border */
if (reg[1] & 0x40) if (reg[1] & 0x40)
{ {
render_obj(1); render_obj(1);

4
core/vdp_render.c
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@ -3731,8 +3731,8 @@ void parse_satb_m4(int line)
break; break;
} }
/* Wrap Y coordinate for sprites > 256-16 */ /* Wrap Y coordinate (NB: this is likely not 100% accurate and needs to be verified on real hardware) */
if (ypos > 240) if (ypos > (bitmap.viewport.h + 16))
{ {
ypos -= 256; ypos -= 256;
} }