shithub: libgraphics

Info  •  Files  •  Log  •  Branches

fb: little memdrawing optimization.

--- a/fb.c

+++ b/fb.c

@@ -364,6 +364,7 @@

 	Raster *r, *r2;

 	Rectangle sr, dr;

 	Memimage *tmp;

+	uchar *bdata0;

 	qlock(ctl);

 	fb = ctl->getfb(ctl);

@@ -403,8 +404,10 @@

 		if(tmp == nil)

 			sysfatal("allocmemimage: %r");

-		loadmemimage(tmp, sr, (uchar*)r->data, Dx(fb->r)*Dy(r->r)*4);

+		bdata0 = tmp->data->bdata;

+		tmp->data->bdata = (void*)r->data;

 		memimagedraw(dst, rectaddpt(sr, dst->r.min), tmp, ZP, nil, ZP, S);

+		tmp->data->bdata = bdata0;

 		freememimage(tmp);

 	}else if(rectclip(&sr, dr)){

 		tmp = allocmemimage(sr, RGBA32);