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linux fbcon: wipe + restore #1954

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nick black 2021-07-25 10:41:46 -04:00
parent 0be5089d2c
commit 269196c39c
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GPG Key ID: 5F43400C21CBFACC
1 changed files with 29 additions and 8 deletions
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37
src/lib/linux.c
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@ -8,7 +8,7 @@ int fbcon_wipe(sprixel* s, int ycell, int xcell){
}
char* glyph = s->glyph;
for(int y = 0 ; y < s->cellpxy ; ++y){
size_t offset = (ycell * s->dimx + xcell) * 4;
size_t offset = ((ycell * s->cellpxy + y) * s->dimx * s->cellpxx + xcell * s->cellpxx) * 4;
for(int x = 0 ; x < s->cellpxx ; ++x){
const int vyx = (y % s->cellpxy) * s->cellpxx + (x % s->cellpxx);
auxvec[vyx] = glyph[offset + 3];
@ -21,13 +21,34 @@ int fbcon_wipe(sprixel* s, int ycell, int xcell){
}
int fbcon_rebuild(sprixel* s, int ycell, int xcell, uint8_t* auxvec){
// FIXME build back from transparency values in auxvec
(void)s;
(void)ycell;
(void)xcell;
(void)auxvec;
logerror("Not yet implemented\n");
return -1;
if(auxvec == NULL){
return -1;
}
sprixcell_e state = SPRIXCELL_TRANSPARENT;
for(int y = 0 ; y < s->cellpxy ; ++y){
size_t offset = ((ycell * s->cellpxy + y) * s->dimx * s->cellpxx + xcell * s->cellpxx) * 4;
for(int x = 0 ; x < s->cellpxx ; ++x){
const int vyx = (y % s->cellpxy) * s->cellpxx + (x % s->cellpxx);
if(x == 0 && y == 0){
if(auxvec[vyx] == 0){
state = SPRIXCELL_TRANSPARENT;
}else{
state = SPRIXCELL_OPAQUE_KITTY;
}
}else{
if(auxvec[vyx] == 0 && state == SPRIXCELL_OPAQUE_KITTY){
state = SPRIXCELL_MIXED_KITTY;
}else if(auxvec[vyx] && state == SPRIXCELL_TRANSPARENT){
state = SPRIXCELL_MIXED_KITTY;
}
}
s->glyph[offset + 3] = auxvec[vyx];
offset += 4;
}
}
s->n->tam[s->dimx * ycell + xcell].state = state;
s->invalidated = SPRIXEL_INVALIDATED;
return 1;
}
int fbcon_blit(struct ncplane* n, int linesize, const void* data,