int
hwdraw(Memdrawparam *par)
{
Memimage *dst, *src, *mask;
if((dst=par->dst) == nil || dst->data == nil)
return 0;
if((src=par->src) == nil || src->data == nil)
return 0;
if((mask=par->mask) == nil || mask->data == nil)
return 0;
if(dst->data->bdata == xgdata.bdata)
swcursoravoid(par->r);
if(src->data->bdata == xgdata.bdata)
swcursoravoid(par->sr);
if(mask->data->bdata == xgdata.bdata)
swcursoravoid(par->mr);
return 0;
}
int
hwdraw(Memdrawparam *par)
{
VGAscr *scr;
Memimage *dst, *src, *mask;
int m;
if(hwaccel == 0)
return 0;
scr = &vgascreen[0];
if((dst=par->dst) == nil || dst->data == nil)
return 0;
if((src=par->src) == nil || src->data == nil)
return 0;
if((mask=par->mask) == nil || mask->data == nil)
return 0;
if(scr->cur == &swcursor){
/*
* always calling swcursorhide here doesn't cure
* leaving cursor tracks nor failing to refresh menus
* with the latest libmemdraw/draw.c.
*/
if(dst->data->bdata == gscreendata.bdata)
swcursoravoid(par->r);
if(src->data->bdata == gscreendata.bdata)
swcursoravoid(par->sr);
if(mask->data->bdata == gscreendata.bdata)
swcursoravoid(par->mr);
}
if(dst->data->bdata != gscreendata.bdata)
return 0;
if(scr->fill==nil && scr->scroll==nil)
return 0;
/*
* If we have an opaque mask and source is one opaque
* pixel we can convert to the destination format and just
* replicate with memset.
*/
m = Simplesrc|Simplemask|Fullmask;
if(scr->fill
&& (par->state&m)==m
&& ((par->srgba&0xFF) == 0xFF)
&& (par->op&S) == S)
return scr->fill(scr, par->r, par->sdval);
/*
* If no source alpha, an opaque mask, we can just copy the
* source onto the destination. If the channels are the same and
* the source is not replicated, memmove suffices.
*/
m = Simplemask|Fullmask;
if(scr->scroll
&& src->data->bdata==dst->data->bdata
&& !(src->flags&Falpha)
&& (par->state&m)==m
&& (par->op&S) == S)
return scr->scroll(scr, par->r, par->sr);
return 0;
}
