admin/ci-libretro-fceumm
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Don't rely on LSB_FIRST

Browse Source
This commit is contained in:
twinaphex
2015-07-23 22:18:46 +02:00
parent 46ac3a807b
commit 5cfa9e8ac9
9 changed files with 62 additions and 60 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
src/ppu.c
View File

@@ -1002,27 +1002,7 @@ static void CopySprites(uint8 *target) {
uint32 t = *(uint32*)(sprlinebuf + n);
if (t != 0x80808080) {
#ifdef LSB_FIRST
if (!(t & 0x80)) {
if (!(t & 0x40) || (P[n] & 0x40)) // Normal sprite || behind bg sprite
P[n] = sprlinebuf[n];
}
if (!(t & 0x8000)) {
if (!(t & 0x4000) || (P[n + 1] & 0x40)) // Normal sprite || behind bg sprite
P[n + 1] = (sprlinebuf + 1)[n];
}
if (!(t & 0x800000)) {
if (!(t & 0x400000) || (P[n + 2] & 0x40)) // Normal sprite || behind bg sprite
P[n + 2] = (sprlinebuf + 2)[n];
}
if (!(t & 0x80000000)) {
if (!(t & 0x40000000) || (P[n + 3] & 0x40)) // Normal sprite || behind bg sprite
P[n + 3] = (sprlinebuf + 3)[n];
}
#else
#ifdef MSB_FIRST
if (!(t & 0x80000000)) {
if (!(t & 0x40000000) || (P[n] & 64)) // Normal sprite || behind bg sprite
P[n] = sprlinebuf[n];
@@ -1042,6 +1022,27 @@ static void CopySprites(uint8 *target) {
if (!(t & 0x40) || (P[n + 3] & 64)) // Normal sprite || behind bg sprite
P[n + 3] = (sprlinebuf + 3)[n];
}
#else
if (!(t & 0x80)) {
if (!(t & 0x40) || (P[n] & 0x40)) // Normal sprite || behind bg sprite
P[n] = sprlinebuf[n];
}
if (!(t & 0x8000)) {
if (!(t & 0x4000) || (P[n + 1] & 0x40)) // Normal sprite || behind bg sprite
P[n + 1] = (sprlinebuf + 1)[n];
}
if (!(t & 0x800000)) {
if (!(t & 0x400000) || (P[n + 2] & 0x40)) // Normal sprite || behind bg sprite
P[n + 2] = (sprlinebuf + 2)[n];
}
if (!(t & 0x80000000)) {
if (!(t & 0x40000000) || (P[n + 3] & 0x40)) // Normal sprite || behind bg sprite
P[n + 3] = (sprlinebuf + 3)[n];
}
#endif
}
n += 4;