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fix biblit bug

This commit is contained in:
Romain Dolbeau 2022-08-15 17:22:11 +02:00
parent 71d88bfb61
commit d9f964dd47
1 changed files with 15 additions and 0 deletions
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15
nubus-to-ztex-gateware/blit_goblin.c
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@ -848,6 +848,21 @@ static void bitblit_fwd_fwd_copy(const unsigned_param_type xs,
sptr_elt_al += 4;
}
sptr_elt = sptr_elt_al + ((unsigned int)sptr_elt & 0x3);
} else if ((xs & 0x7) != (xd & 0x7)) {
/* off-hy-4, can't use 64 ld/sd but still can use 32-bits */
const unsigned int u32pm = (unsigned int)pm | ((unsigned int)pm)<<8 | ((unsigned int)pm)<<16 | ((unsigned int)pm)<<24;
const unsigned char* dptr_elt_end = dptr_elt + wi;
/* align dest & src (they are aligned the same here up to 0x3) */
for ( ; (dptr_elt < dptr_elt_last) && ((unsigned int)dptr_elt&0x3)!=0; ) {
dptr_elt[0] = sptr_elt[0];
dptr_elt ++;
sptr_elt ++;
}
for ( ; (dptr_elt < (dptr_elt_last-3)) ; ) {
((unsigned int*)dptr_elt)[0] = ((unsigned int*)sptr_elt)[0];
dptr_elt += 4;
sptr_elt += 4;
}
} else {
const unsigned int u32pm = (unsigned int)pm | ((unsigned int)pm)<<8 | ((unsigned int)pm)<<16 | ((unsigned int)pm)<<24;
const unsigned char* dptr_elt_end = dptr_elt + wi;