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#include <u.h>
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#include <libc.h>
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#include <draw.h>
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void
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_setdrawop(Display *d, Drawop op)
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{
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	uchar *a;
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	if(op != SoverD){
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		a = bufimage(d, 1+1);
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		if(a == 0)
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			return;
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		a[0] = 'O';
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		a[1] = op;
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	}
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}
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static void
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draw1(Image *dst, Rectangle *r, Image *src, Point *p0, Image *mask, Point *p1, Drawop op)
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{
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	uchar *a;
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	_setdrawop(dst->display, op);
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	a = bufimage(dst->display, 1+4+4+4+4*4+2*4+2*4);
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	if(a == 0)
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		return;
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	if(src == nil)
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		src = dst->display->black;
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	if(mask == nil)
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		mask = dst->display->opaque;
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	a[0] = 'd';
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	BPLONG(a+1, dst->id);
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	BPLONG(a+5, src->id);
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	BPLONG(a+9, mask->id);
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	BPLONG(a+13, r->min.x);
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	BPLONG(a+17, r->min.y);
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	BPLONG(a+21, r->max.x);
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	BPLONG(a+25, r->max.y);
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	BPLONG(a+29, p0->x);
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	BPLONG(a+33, p0->y);
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	BPLONG(a+37, p1->x);
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	BPLONG(a+41, p1->y);
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}
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void
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draw(Image *dst, Rectangle r, Image *src, Image *mask, Point p1)
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{
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	draw1(dst, &r, src, &p1, mask, &p1, SoverD);
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}
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void
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drawop(Image *dst, Rectangle r, Image *src, Image *mask, Point p1, Drawop op)
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{
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	draw1(dst, &r, src, &p1, mask, &p1, op);
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}
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void
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gendraw(Image *dst, Rectangle r, Image *src, Point p0, Image *mask, Point p1)
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{
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	draw1(dst, &r, src, &p0, mask, &p1, SoverD);
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}
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void
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gendrawop(Image *dst, Rectangle r, Image *src, Point p0, Image *mask, Point p1, Drawop op)
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{
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	draw1(dst, &r, src, &p0, mask, &p1, op);
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}