shithub: cstory

Info  •  Files  •  Log  •  Branches

Use 1 bit masks in renderer

--- a/src/Backends/Rendering/9front.cpp

+++ b/src/Backends/Rendering/9front.cpp

@@ -207,8 +207,9 @@

 {

 	Memimage *m;

 	Rectangle r;

-	int x, y, w, h;

+	int x, y, w, h, loc, sh;

 	ulong *lp;

+	uchar *mask;

 	r = s->i->r;

 	w = Dx(r);

@@ -215,18 +216,25 @@

 	h = Dy(r);

 	m = allocmemimage(r, s->i->chan);

 	unloadimage(s->i, r, m->data->bdata, h*w*4);

+	mask = malloc(w*h/8);

+	memset(mask, 0, w*h/8);

 	for(y = 0; y < h; y++)

 	for(x = 0; x < w; x++){

-		lp = m->data->base + y*w + x;

+		loc = y*w + x;

+		lp = (ulong*)m->data->bdata;

+		lp += loc;

+		sh = loc % 8;

+		loc /= 8;

 		if((*lp & maskmask) == 0)

-			*lp = 0x00;

+			mask[loc] |= 0<<(7-sh);

 		else

-			*lp = 0xFFFFFFFF;

+			mask[loc] |= 1<<(7-sh);

 	}

 	freeimage(s->mask);

-	s->mask = allocimage(display, r, screen->chan, 0, DNofill);

-	loadimage(s->mask, r, m->data->bdata, h*w*4);

+	s->mask = allocimage(display, r, GREY1, 0, DNofill);

+	loadimage(s->mask, r, mask, h*w/8);

 	freememimage(m);

+	free(mask);

 	s->dirty = 0;

 }