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pc, pc64: use softscreen double buffering for *bootscreen= framebuffer

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it is probably almost always a good idea to use
double buffering with a unaccelerated framebuffer.
This commit is contained in:
cinap_lenrek 2020-04-24 20:26:38 +02:00
parent 759656ad4c
commit 4fb7462bd5
1 changed files with 5 additions and 6 deletions
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11
sys/src/9/pc/screen.c
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@ -573,7 +573,6 @@ Next:
void
bootscreeninit(void)
{
static Memdata md;
VGAscr *scr;
int x, y, z;
ulong chan, pa, sz;
@ -622,9 +621,7 @@ bootscreeninit(void)
if(memimageinit() < 0)
return;
md.ref = 1;
md.bdata = scr->vaddr;
gscreen = allocmemimaged(Rect(0,0,x,y), chan, &md);
gscreen = allocmemimage(Rect(0,0,x,y), chan);
if(gscreen == nil)
return;
@ -632,8 +629,8 @@ bootscreeninit(void)
scr->memdefont = getmemdefont();
scr->gscreen = gscreen;
scr->gscreendata = gscreen->data;
scr->softscreen = 0;
scr->useflush = 0;
scr->softscreen = 1;
scr->useflush = 1;
scr->dev = nil;
physgscreenr = gscreen->r;
@ -641,6 +638,8 @@ bootscreeninit(void)
vgaimageinit(chan);
vgascreenwin(scr);
drawcmap();
scr->cur = &vgasoftcur;
scr->cur->enable(scr);