screen: cleanup
parent
b9ca8e8378
commit
c71c05dd64
|
@ -176,7 +176,7 @@ flushmemscreen(Rectangle r)
|
|||
{
|
||||
VGAscr *scr;
|
||||
uchar *sp, *disp, *sdisp, *edisp;
|
||||
int y, len, incs, off, xoff, page;
|
||||
int y, len, incs, off, page;
|
||||
|
||||
scr = &vgascreen[0];
|
||||
if(scr->gscreen == nil || scr->useflush == 0)
|
||||
|
@ -188,45 +188,32 @@ flushmemscreen(Rectangle r)
|
|||
if(rectclip(&r, scr->gscreen->r) == 0)
|
||||
return;
|
||||
disp = scr->vaddr;
|
||||
incs = scr->gscreen->width * BY2WD;
|
||||
xoff = (r.min.x*scr->gscreen->depth) / 8;
|
||||
off = r.min.y*incs + xoff;
|
||||
incs = scr->gscreen->width*BY2WD;
|
||||
off = (r.min.x*scr->gscreen->depth) / 8;
|
||||
len = (r.max.x*scr->gscreen->depth + 7) / 8;
|
||||
len -= off;
|
||||
off += r.min.y*incs;
|
||||
sp = scr->gscreendata->bdata + scr->gscreen->zero + off;
|
||||
|
||||
/*
|
||||
* Linear framebuffer but with softscreen.
|
||||
* Linear framebuffer with softscreen.
|
||||
*/
|
||||
if(scr->paddr){
|
||||
len = (r.max.x*scr->gscreen->depth + 7) / 8;
|
||||
len -= xoff;
|
||||
sdisp = disp + off;
|
||||
edisp = sdisp + Dy(r)*incs;
|
||||
while(sdisp < edisp){
|
||||
sdisp = disp+off;
|
||||
for(y = r.min.y; y < r.max.y; y++) {
|
||||
memmove(sdisp, sp, len);
|
||||
sdisp += incs;
|
||||
sp += incs;
|
||||
sdisp += incs;
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Paged access thru 64K window.
|
||||
* It would be fair to say that this doesn't work for >8-bit screens.
|
||||
* Paged framebuffer window.
|
||||
*/
|
||||
if(scr->dev == nil || scr->dev->page == nil)
|
||||
return;
|
||||
|
||||
switch(scr->gscreen->depth){
|
||||
default:
|
||||
len = 0;
|
||||
break;
|
||||
case 8:
|
||||
len = Dx(r);
|
||||
break;
|
||||
}
|
||||
if(len < 1)
|
||||
return;
|
||||
page = off/scr->apsize;
|
||||
off %= scr->apsize;
|
||||
sdisp = disp+off;
|
||||
|
|
Loading…
Reference in New Issue