~kris/9p

9hist

8a94bf7ba9da5a1e8afd44fea13ef363469fc383 — David du Colombier 23 years ago 8935ef0
Plan 9 from Bell Labs 2002-12-05
8 files changed, 85 insertions(+), 575 deletions(-)

M alphapc/screen.c
M alphapc/screen.h
M bitsy/screen.c
M pc/devvga.c
M pc/screen.c
M pc/screen.h
M pc/vga.c
M port/devdraw.c
M alphapc/screen.c => alphapc/screen.c +1 -532
@@ 1,532 1,1 @@
#include "u.h"
#include "../port/lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "io.h"
#include "ureg.h"
#include "../port/error.h"

#define	Image	IMAGE
#include <draw.h>
#include <memdraw.h>
#include <cursor.h>
#include "screen.h"

#define RGB2K(r,g,b)	((156763*(r)+307758*(g)+59769*(b))>>19)

Point ZP = {0, 0};

Rectangle physgscreenr;

Memdata gscreendata;
Memimage *gscreen;

VGAscr vgascreen[1];

Cursor	arrow = {
	{ -1, -1 },
	{ 0xFF, 0xFF, 0x80, 0x01, 0x80, 0x02, 0x80, 0x0C, 
	  0x80, 0x10, 0x80, 0x10, 0x80, 0x08, 0x80, 0x04, 
	  0x80, 0x02, 0x80, 0x01, 0x80, 0x02, 0x8C, 0x04, 
	  0x92, 0x08, 0x91, 0x10, 0xA0, 0xA0, 0xC0, 0x40, 
	},
	{ 0x00, 0x00, 0x7F, 0xFE, 0x7F, 0xFC, 0x7F, 0xF0, 
	  0x7F, 0xE0, 0x7F, 0xE0, 0x7F, 0xF0, 0x7F, 0xF8, 
	  0x7F, 0xFC, 0x7F, 0xFE, 0x7F, 0xFC, 0x73, 0xF8, 
	  0x61, 0xF0, 0x60, 0xE0, 0x40, 0x40, 0x00, 0x00, 
	},
};

int
screensize(int x, int y, int z, ulong chan)
{
	VGAscr *scr;

	memimageinit();
	scr = &vgascreen[0];

	/*
	 * BUG: need to check if any xalloc'ed memory needs to
	 * be given back if aperture is set.
	 */
	if(scr->aperture == 0){
		int width = (x*z)/BI2WD;

		gscreendata.bdata = xalloc(width*BY2WD*y);
		if(gscreendata.bdata == 0)
			error("screensize: vga soft memory");
		memset(gscreendata.bdata, Backgnd, width*BY2WD*y);
		scr->useflush = 1;

		scr->aperture = PADDR(arch->pcimem(0xA0000, 1<<16));
		scr->apsize = 1<<16;
	}
	else
		gscreendata.bdata = KADDR(scr->aperture);

	if(gscreen)
		freememimage(gscreen);

	gscreen = allocmemimaged(Rect(0,0,x,y), chan, &gscreendata);
	vgaimageinit(chan);
	if(gscreen == nil)
		return -1;

/*	memset(gscreen->data->bdata, 0x15, (x*y*z+7)/8);	/* RSC BUG */
	memfillcolor(gscreen, DRed);

	scr->palettedepth = 6;	/* default */
	scr->gscreendata = &gscreendata;
	scr->memdefont = getmemdefont();
	scr->gscreen = gscreen;

	physgscreenr = gscreen->r;

	drawcmap();
	return 0;
}

int
screenaperture(int size, int align)
{
	VGAscr *scr;
	ulong aperture;

	scr = &vgascreen[0];

	if(size == 0){
		if(scr->aperture && scr->isupamem)
			upafree(scr->aperture, scr->apsize);
		scr->aperture = 0;
		scr->isupamem = 0;
		return 0;
	}
	if(scr->dev && scr->dev->linear){
		aperture = scr->dev->linear(scr, &size, &align);
		if(aperture == 0)
			return 1;
	}else{
		aperture = upamalloc(0, size, align);
		if(aperture == 0)
			return 1;

		if(scr->aperture && scr->isupamem)
			upafree(scr->aperture, scr->apsize);
		scr->isupamem = 1;
	}

	scr->aperture = aperture;
	scr->apsize = size;

	return 0;
}

uchar*
attachscreen(Rectangle* r, ulong* chan, int* d, int* width, int *softscreen)
{
	VGAscr *scr;

	scr = &vgascreen[0];
	if(scr->gscreen == nil || scr->gscreendata == nil)
		return nil;

	*r = scr->gscreen->r;
	*chan = scr->gscreen->chan;
	*d = scr->gscreen->depth;
	*width = scr->gscreen->width;
	*softscreen = scr->useflush;

	return scr->gscreendata->bdata;
}

/*
 * It would be fair to say that this doesn't work for >8-bit screens.
 */
void
flushmemscreen(Rectangle r)
{
	VGAscr *scr;
	uchar *sp, *disp, *sdisp, *edisp;
	int y, len, incs, off, page;

	scr = &vgascreen[0];
	if(scr->gscreen == nil || scr->useflush == 0)
		return;
	if(scr->dev == nil || scr->dev->page == nil)
		return;

	if(rectclip(&r, scr->gscreen->r) == 0)
		return;

	incs = scr->gscreen->width * BY2WD;

	switch(scr->gscreen->depth){
	default:
		len = 0;
		panic("flushmemscreen: depth\n");
		break;
	case 8:
		len = Dx(r);
		break;
	}
	if(len < 1)
		return;

	off = r.min.y*scr->gscreen->width*BY2WD+(r.min.x*scr->gscreen->depth)/8;
	page = off/scr->apsize;
	off %= scr->apsize;
	disp = KADDR(scr->aperture);
	sdisp = disp+off;
	edisp = disp+scr->apsize;

	off = r.min.y*scr->gscreen->width*BY2WD+(r.min.x*scr->gscreen->depth)/8;

	sp = scr->gscreendata->bdata + off;

	scr->dev->page(scr, page);
	for(y = r.min.y; y < r.max.y; y++) {
		if(sdisp + incs < edisp) {
			memmove(sdisp, sp, len);
			sp += incs;
			sdisp += incs;
		}
		else {
			off = edisp - sdisp;
			page++;
			if(off <= len){
				if(off > 0)
					memmove(sdisp, sp, off);
				scr->dev->page(scr, page);
				if(len - off > 0)
					memmove(disp, sp+off, len - off);
			}
			else {
				memmove(sdisp, sp, len);
				scr->dev->page(scr, page);
			}
			sp += incs;
			sdisp += incs - scr->apsize;
		}
	}
}

void
getcolor(ulong p, ulong* pr, ulong* pg, ulong* pb)
{
	VGAscr *scr;
	ulong x;

	scr = &vgascreen[0];
	if(scr->gscreen == nil)
		return;

	switch(scr->gscreen->depth){
	default:
		x = 0x0F;
		break;
	case 8:
		x = 0xFF;
		break;
	}
	p &= x;

	lock(&cursor);
	*pr = scr->colormap[p][0];
	*pg = scr->colormap[p][1];
	*pb = scr->colormap[p][2];
	unlock(&cursor);
}

int
setpalette(ulong p, ulong r, ulong g, ulong b)
{
	VGAscr *scr;
	int d;

	scr = &vgascreen[0];
	d = scr->palettedepth;

	lock(&cursor);
	scr->colormap[p][0] = r;
	scr->colormap[p][1] = g;
	scr->colormap[p][2] = b;
	vgao(PaddrW, p);
	vgao(Pdata, r>>(32-d));
	vgao(Pdata, g>>(32-d));
	vgao(Pdata, b>>(32-d));
	unlock(&cursor);

	return ~0;
}

/*
 * On some video cards (e.g. Mach64), the palette is used as the 
 * DAC registers for >8-bit modes.  We don't want to set them when the user
 * is trying to set a colormap and the card is in one of these modes.
 */
int
setcolor(ulong p, ulong r, ulong g, ulong b)
{
	VGAscr *scr;
	int x;

	scr = &vgascreen[0];
	if(scr->gscreen == nil)
		return 0;

	switch(scr->gscreen->depth){
	case 1:
	case 2:
	case 4:
		x = 0x0F;
		break;
	case 8:
		x = 0xFF;
		break;
	default:
		return 0;
	}
	p &= x;

	return setpalette(p, r, g, b);
}

int
cursoron(int dolock)
{
	VGAscr *scr;
	int v;

	scr = &vgascreen[0];
	if(scr->cur == nil || scr->cur->move == nil)
		return 0;

	if(dolock)
		lock(&cursor);
	v = scr->cur->move(scr, mousexy());
	if(dolock)
		unlock(&cursor);

	return v;
}

void
cursoroff(int)
{
}

void
setcursor(Cursor* curs)
{
	VGAscr *scr;

	scr = &vgascreen[0];
	if(scr->cur == nil || scr->cur->load == nil)
		return;

	scr->cur->load(scr, curs);
}

static ulong
pixelbits(Memimage *i, Point pt)
{
	uchar *p;
	ulong val;
	int off, bpp, npack;

	val = 0;
	p = byteaddr(i, pt);
	switch(bpp=i->depth){
	case 1:
	case 2:
	case 4:
		npack = 8/bpp;
		off = pt.x%npack;
		val = p[0] >> bpp*(npack-1-off);
		val &= (1<<bpp)-1;
		break;
	case 8:
		val = p[0];
		break;
	case 16:
		val = p[0]|(p[1]<<8);
		break;
	case 24:
		val = p[0]|(p[1]<<8)|(p[2]<<16);
		break;
	case 32:
		val = p[0]|(p[1]<<8)|(p[2]<<16)|(p[3]<<24);
		break;
	}
	while(bpp<32){
		val |= val<<bpp;
		bpp *= 2;
	}
	return val;
}


static ulong
imgtorgba(Memimage *img, ulong val)
{
	uchar r, g, b, a;
	int nb, ov, v;
	ulong chan;
	uchar *p;

	a = 0xFF;
	r = g = b = 0xAA;	/* garbage */
	for(chan=img->chan; chan; chan>>=8){
		nb = NBITS(chan);
		ov = v = val&((1<<nb)-1);
		val >>= nb;

		while(nb < 8){
			v |= v<<nb;
			nb *= 2;
		}
		v >>= (nb-8);

		switch(TYPE(chan)){
		case CRed:
			r = v;
			break;
		case CGreen:
			g = v;
			break;
		case CBlue:
			b = v;
			break;
		case CAlpha:
			a = v;
			break;
		case CGrey:
			r = g = b = v;
			break;
		case CMap:
			p = img->cmap->cmap2rgb+3*ov;
			r = *p++;
			g = *p++;	
			b = *p;
			break;
		}
	}
	return (r<<24)|(g<<16)|(b<<8)|a;	
}

static ulong
rgbatoimg(Memimage *img, ulong rgba)
{
	ulong chan;
	int d, nb;
	ulong v;
	uchar *p, r, g, b, a, m;

	v = 0;
	r = rgba>>24;
	g = rgba>>16;
	b = rgba>>8;
	a = rgba;
	d = 0;
	for(chan=img->chan; chan; chan>>=8){
		nb = NBITS(chan);
		switch(TYPE(chan)){
		case CRed:
			v |= (r>>(8-nb))<<d;
			break;
		case CGreen:
			v |= (g>>(8-nb))<<d;
			break;
		case CBlue:
			v |= (b>>(8-nb))<<d;
			break;
		case CAlpha:
			v |= (a>>(8-nb))<<d;
			break;
		case CMap:
			p = img->cmap->rgb2cmap;
			m = p[(r>>4)*256+(g>>4)*16+(b>>4)];
			v |= m<<d;
			break;
		case CGrey:
			m = RGB2K(r,g,b);
			v |= m<<d;
			break;
		}
		d += nb;
	}
//	print("rgba2img %.8lux = %.*lux\n", rgba, 2*d/8, v);
	return v;
}

Memimage *lastbadi;
Memdata *lastbad;
Memimage *lastbadsrc, *lastbaddst;
int hwaccel = 1;
int hwblank = 1;

int
hwdraw(Memdrawparam *par)
{
	int m;
	VGAscr *scr;
	Memimage *dst, *src;

	if(hwaccel == 0)
		return 0;

	dst = par->dst;
	scr = &vgascreen[0];
	if(dst == nil || dst->data == nil)
		return 0;

	if(dst->data->bdata != gscreendata.bdata)
		return 0;

//	if(dst->data != &gscreendata){
//		lastbad = dst->data;
//		lastbadi = dst;
//		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))
		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.
	 */
	src = par->src;
	if(scr->scroll && src->data->bdata==dst->data->bdata && !(src->flags&Falpha)
	&& (par->state&(Simplemask|Fullmask))==(Simplemask|Fullmask)){
//		if(src->zero != dst->zero){
//			lastbadsrc = src;
//			lastbaddst = dst;
//			iprint("#");
//		}
		return scr->scroll(scr, par->r, par->sr);
	}

	return 0;	
}

void
blankscreen(int blank)
{
	VGAscr *scr;

	scr = &vgascreen[0];
	if(hwblank && scr->blank)
		scr->blank(scr, blank);
}
#include "../pc/screen.c"

M alphapc/screen.h => alphapc/screen.h +2 -0
@@ 47,6 47,8 @@ enum {
	Pwhite		= 0xFF,
};

#define VGAMEM()	PADDR(arch->pcimem(0xA0000, 1<<16))

#define vgai(port)		inb(port)
#define vgao(port, data)	outb(port, data)


M bitsy/screen.c => bitsy/screen.c +8 -8
@@ 393,12 393,12 @@ screenwin(void)

	r = insetrect(gscreen->r, 4);

	memimagedraw(gscreen, r, memblack, ZP, memopaque, ZP);
	memimagedraw(gscreen, r, memblack, ZP, memopaque, ZP, S);
	window = insetrect(r, 4);
	memimagedraw(gscreen, window, memwhite, ZP, memopaque, ZP);
	memimagedraw(gscreen, window, memwhite, ZP, memopaque, ZP, S);

	memimagedraw(gscreen, Rect(window.min.x, window.min.y,
			window.max.x, window.min.y+h+5+6), orange, ZP, nil, ZP);
			window.max.x, window.min.y+h+5+6), orange, ZP, nil, ZP, S);
	freememimage(orange);
	window = insetrect(window, 5);



@@ 445,7 445,7 @@ screenputc(char *buf)
		pos = 4-(pos%4);
		*xp++ = curpos.x;
		r = Rect(curpos.x, curpos.y, curpos.x+pos*w, curpos.y + h);
		memimagedraw(gscreen, r, back, back->r.min, nil, back->r.min);
		memimagedraw(gscreen, r, back, back->r.min, nil, back->r.min, S);
		flushmemscreen(r);
		curpos.x += pos*w;
		break;


@@ 454,7 454,7 @@ screenputc(char *buf)
			break;
		xp--;
		r = Rect(*xp, curpos.y, curpos.x, curpos.y + h);
		memimagedraw(gscreen, r, back, back->r.min, nil, back->r.min);
		memimagedraw(gscreen, r, back, back->r.min, nil, back->r.min, S);
		flushmemscreen(r);
		curpos.x = *xp;
		break;


@@ 469,7 469,7 @@ screenputc(char *buf)

		*xp++ = curpos.x;
		r = Rect(curpos.x, curpos.y, curpos.x+w, curpos.y + h);
		memimagedraw(gscreen, r, back, back->r.min, nil, back->r.min);
		memimagedraw(gscreen, r, back, back->r.min, nil, back->r.min, S);
		memimagestring(gscreen, curpos, conscol, ZP, memdefont, buf);
		flushmemscreen(r);
		curpos.x += w;


@@ 486,10 486,10 @@ scroll(void)
	o = 8*h;
	r = Rpt(window.min, Pt(window.max.x, window.max.y-o));
	p = Pt(window.min.x, window.min.y+o);
	memimagedraw(gscreen, r, gscreen, p, nil, p);
	memimagedraw(gscreen, r, gscreen, p, nil, p, S);
	flushmemscreen(r);
	r = Rpt(Pt(window.min.x, window.max.y-o), window.max);
	memimagedraw(gscreen, r, back, ZP, nil, ZP);
	memimagedraw(gscreen, r, back, ZP, nil, ZP, S);
	flushmemscreen(r);

	curpos.y -= o;

M pc/devvga.c => pc/devvga.c +1 -1
@@ 322,7 322,7 @@ vgactl(Cmdbuf *cb)
		return;

	case CMdrawinit:
		memimagedraw(scr->gscreen, scr->gscreen->r, memblack, ZP, nil, ZP);
		memimagedraw(scr->gscreen, scr->gscreen->r, memblack, ZP, nil, ZP, S);
		if(scr && scr->dev && scr->dev->drawinit)
			scr->dev->drawinit(scr);
		return;

M pc/screen.c => pc/screen.c +11 -6
@@ 58,7 58,7 @@ screensize(int x, int y, int z, ulong chan)
			error("screensize: vga soft memory");
/*		memset(gscreendata.bdata, 0x72, width*BY2WD*y);	/* not really black */
		scr->useflush = 1;
		scr->aperture = 0xA0000;
		scr->aperture = VGAMEM();
		scr->apsize = 1<<16;
	}
	else


@@ 362,7 362,10 @@ hwdraw(Memdrawparam *par)
	 * replicate with memset.
	 */
	m = Simplesrc|Simplemask|Fullmask;
	if(scr->fill && (par->state&m)==m && ((par->srgba&0xFF) == 0xFF))
	if(scr->fill
	&& (par->state&m)==m
	&& ((par->srgba&0xFF) == 0xFF)
	&& (par->op&S) == S)
		return scr->fill(scr, par->r, par->sdval);

	/*


@@ 370,11 373,14 @@ hwdraw(Memdrawparam *par)
	 * source onto the destination.  If the channels are the same and
	 * the source is not replicated, memmove suffices.
	 */
	m = Simplemask|Fullmask;
	src = par->src;
	if(scr->scroll && src->data->bdata==dst->data->bdata && !(src->flags&Falpha)
	&& (par->state&(Simplemask|Fullmask))==(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;	
}


@@ 385,7 391,6 @@ blankscreen(int blank)
	VGAscr *scr;

	scr = &vgascreen[0];
	scr->isblank = blank;
	if(hwblank){
		if(scr->blank)
			scr->blank(scr, blank);

M pc/screen.h => pc/screen.h +1 -0
@@ 47,6 47,7 @@ enum {
	Pwhite		= 0xFF,
};

#define VGAMEM()	0xA0000
#define vgai(port)		inb(port)
#define vgao(port, data)	outb(port, data)


M pc/vga.c => pc/vga.c +6 -6
@@ 54,9 54,9 @@ vgascroll(VGAscr* scr)
	o = 8*h;
	r = Rpt(window.min, Pt(window.max.x, window.max.y-o));
	p = Pt(window.min.x, window.min.y+o);
	memimagedraw(scr->gscreen, r, scr->gscreen, p, nil, p);
	memimagedraw(scr->gscreen, r, scr->gscreen, p, nil, p, S);
	r = Rpt(Pt(window.min.x, window.max.y-o), window.max);
	memimagedraw(scr->gscreen, r, back, ZP, nil, ZP);
	memimagedraw(scr->gscreen, r, back, ZP, nil, ZP, S);

	curpos.y -= o;
}


@@ 99,7 99,7 @@ vgascreenputc(VGAscr* scr, char* buf, Rectangle *flushr)
		pos = 4-(pos%4);
		*xp++ = curpos.x;
		r = Rect(curpos.x, curpos.y, curpos.x+pos*w, curpos.y + h);
		memimagedraw(scr->gscreen, r, back, back->r.min, nil, back->r.min);
		memimagedraw(scr->gscreen, r, back, back->r.min, nil, back->r.min, S);
		curpos.x += pos*w;
		break;



@@ 108,7 108,7 @@ vgascreenputc(VGAscr* scr, char* buf, Rectangle *flushr)
			break;
		xp--;
		r = Rect(*xp, curpos.y, curpos.x, curpos.y+h);
		memimagedraw(scr->gscreen, r, back, back->r.min, nil, ZP);
		memimagedraw(scr->gscreen, r, back, back->r.min, nil, ZP, S);
		combinerect(flushr, r);
		curpos.x = *xp;
		break;


@@ 125,7 125,7 @@ vgascreenputc(VGAscr* scr, char* buf, Rectangle *flushr)

		*xp++ = curpos.x;
		r = Rect(curpos.x, curpos.y, curpos.x+w, curpos.y+h);
		memimagedraw(scr->gscreen, r, back, back->r.min, nil, back->r.min);
		memimagedraw(scr->gscreen, r, back, back->r.min, nil, back->r.min, S);
		memimagestring(scr->gscreen, curpos, conscol, ZP, scr->memdefont, buf);
		combinerect(flushr, r);
		curpos.x += w;


@@ 248,7 248,7 @@ cornerstring(char *s)
	h = scr->memdefont->height;

	r = Rect(0, 0, w, h);
	memimagedraw(scr->gscreen, r, back, back->r.min, nil, back->r.min);
	memimagedraw(scr->gscreen, r, back, back->r.min, nil, back->r.min, S);
	memimagestring(scr->gscreen, r.min, conscol, ZP, scr->memdefont, s);
//	flushmemscreen(r);
}

M port/devdraw.c => port/devdraw.c +55 -22
@@ 80,6 80,7 @@ struct Client
	int		slot;
	int		refreshme;
	int		infoid;
	int		op;
};

struct Refresh


@@ 750,10 751,21 @@ drawnewclient(void)
	memset(cl, 0, sizeof(Client));
	cl->slot = i;
	cl->clientid = ++sdraw.clientid;
	cl->op = SoverD;
	sdraw.client[i] = cl;
	return cl;
}

static int
drawclientop(Client *cl)
{
	int op;

	op = cl->op;
	cl->op = SoverD;
	return op;
}

int
drawhasclients(void)
{


@@ 820,7 832,7 @@ drawpoint(Point *p, uchar *a)
}

Point
drawchar(Memimage *dst, Point p, Memimage *src, Point *sp, DImage *font, int index)
drawchar(Memimage *dst, Point p, Memimage *src, Point *sp, DImage *font, int index, int op)
{
	FChar *fc;
	Rectangle r;


@@ 833,7 845,7 @@ drawchar(Memimage *dst, Point p, Memimage *src, Point *sp, DImage *font, int ind
	r.max.y = r.min.y+(fc->maxy-fc->miny);
	sp1.x = sp->x+fc->left;
	sp1.y = sp->y+fc->miny;
	memdraw(dst, r, src, sp1, font->image, Pt(fc->minx, fc->miny));
	memdraw(dst, r, src, sp1, font->image, Pt(fc->minx, fc->miny), op);
	p.x += fc->width;
	sp->x += fc->width;
	return p;


@@ 877,7 889,7 @@ deletescreenimage(void)
	qunlock(&sdraw);
}

Chan*
static Chan*
drawattach(char *spec)
{
	qlock(&sdraw);


@@ 889,7 901,7 @@ drawattach(char *spec)
	return devattach('i', spec);
}

Walkqid*
static Walkqid*
drawwalk(Chan *c, Chan *nc, char **name, int nname)
{
	if(screendata.bdata == nil)


@@ 1272,7 1284,7 @@ printmesg(char *fmt, uchar *a, int plsprnt)
void
drawmesg(Client *client, void *av, int n)
{
	int c, repl, m, y, dstid, scrnid, ni, ci, j, nw, e0, e1, ox, oy, esize, doflush;
	int c, repl, m, y, dstid, scrnid, ni, ci, j, nw, e0, e1, op, ox, oy, oesize, esize, doflush;
	uchar *u, *a, refresh;
	char *fmt;
	ulong value, chan;


@@ 1427,7 1439,8 @@ drawmesg(Client *client, void *av, int n)
			drawrectangle(&r, a+13);
			drawpoint(&p, a+29);
			drawpoint(&q, a+37);
			memdraw(dst, r, src, p, mask, q);
			op = drawclientop(client);
			memdraw(dst, r, src, p, mask, q, op);
			dstflush(dstid, dst, r);
			continue;



@@ 1464,13 1477,14 @@ drawmesg(Client *client, void *av, int n)
				c = -1;
			ox = BGLONG(a+37);
			oy = BGLONG(a+41);
			op = drawclientop(client);
			/* high bit indicates arc angles are present */
			if(ox & (1<<31)){
				if((ox & (1<<30)) == 0)
					ox &= ~(1<<31);
				memarc(dst, p, e0, e1, c, src, sp, ox, oy);
				memarc(dst, p, e0, e1, c, src, sp, ox, oy, op);
			}else
				memellipse(dst, p, e0, e1, c, src, sp);
				memellipse(dst, p, e0, e1, c, src, sp, op);
			dstflush(dstid, dst, Rect(p.x-e0-j, p.y-e1-j, p.x+e0+j+1, p.y+e1+j+1));
			continue;



@@ 1539,7 1553,7 @@ drawmesg(Client *client, void *av, int n)
				error(Eindex);
			drawrectangle(&r, a+11);
			drawpoint(&p, a+27);
			memdraw(font->image, r, src, p, memopaque, p);
			memdraw(font->image, r, src, p, memopaque, p, S);
			fc = &font->fchar[ci];
			fc->minx = r.min.x;
			fc->maxx = r.max.x;


@@ 1566,7 1580,8 @@ drawmesg(Client *client, void *av, int n)
				error("negative line width");
			src = drawimage(client, a+33);
			drawpoint(&sp, a+37);
			memline(dst, p, q, e0, e1, j, src, sp);
			op = drawclientop(client);
			memline(dst, p, q, e0, e1, j, src, sp, op);
			/* avoid memlinebbox if possible */
			if(dstid==0 || dst->layer!=nil){
				/* BUG: this is terribly inefficient: update maximal containing rect*/


@@ 1672,6 1687,15 @@ drawmesg(Client *client, void *av, int n)
			}
			continue;

		/* set compositing operator for next draw operation: 'O' op */
		case 'O':
			printmesg(fmt="b", a, 0);
			m = 1+1;
			if(n < m)
				error(Eshortdraw);
			client->op = a[1];
			continue;

		/* filled polygon: 'P' dstid[4] n[2] wind[4] ignore[2*4] srcid[4] sp[2*4] p0[2*4] dp[2*2*n] */
		/* polygon: 'p' dstid[4] n[2] end0[4] end1[4] radius[4] srcid[4] sp[2*4] p0[2*4] dp[2*2*n] */
		case 'p':


@@ 1704,8 1728,11 @@ drawmesg(Client *client, void *av, int n)
			if(dstid==0 || (dst->layer && dst->layer->screen->image->data == screenimage->data))
				doflush = 1;	/* simplify test in loop */
			ox = oy = 0;
			esize = 0;
			u = a+m;
			for(y=0; y<ni; y++){
				q = p;
				oesize = esize;
				u = drawcoord(u, a+n, ox, &p.x);
				u = drawcoord(u, a+n, oy, &p.y);
				ox = p.x;


@@ 1726,16 1753,22 @@ drawmesg(Client *client, void *av, int n)
					}
					if(*a=='P' && e0!=1 && e0 !=~0)
						r = dst->clipr;
					else
						r = Rect(p.x-esize, p.y-esize, p.x+esize+1, p.y+esize+1);
					dstflush(dstid, dst, r);
					else if(y > 0){
						r = Rect(q.x-oesize, q.y-oesize, q.x+oesize+1, q.y+oesize+1);
						combinerect(&r, Rect(p.x-esize, p.y-esize, p.x+esize+1, p.y+esize+1));
					}
					if(rectclip(&r, dst->clipr))		/* should perhaps be an arg to dstflush */
						dstflush(dstid, dst, r);
				}
				pp[y] = p;
			}
			if(y == 1)
				dstflush(dstid, dst, Rect(p.x-esize, p.y-esize, p.x+esize+1, p.y+esize+1));
			op = drawclientop(client);
			if(*a == 'p')
				mempoly(dst, pp, ni, e0, e1, j, src, sp);
				mempoly(dst, pp, ni, e0, e1, j, src, sp, op);
			else
				memfillpoly(dst, pp, ni, e0, src, sp);
				memfillpoly(dst, pp, ni, e0, src, sp, op);
			free(pp);
			m = u-a;
			continue;


@@ 1793,6 1826,7 @@ drawmesg(Client *client, void *av, int n)
				error(Eshortdraw);
			clipr = dst->clipr;
			dst->clipr = r;
			op = drawclientop(client);
			if(*a == 'x'){
				/* paint background */
				l = drawimage(client, a+47);


@@ 1811,7 1845,7 @@ drawmesg(Client *client, void *av, int n)
					r.max.x += font->fchar[ci].width;
					u += 2;
				}
				memdraw(dst, r, l, q, memopaque, ZP);
				memdraw(dst, r, l, q, memopaque, ZP, op);
				u -= 2*ni;
			}
			q = p;


@@ 1821,7 1855,7 @@ drawmesg(Client *client, void *av, int n)
					dst->clipr = clipr;
					error(Eindex);
				}
				q = drawchar(dst, q, src, &sp, font, ci);
				q = drawchar(dst, q, src, &sp, font, ci, op);
				u += 2;
			}
			dst->clipr = clipr;


@@ 2020,17 2054,16 @@ drawactive(int active)
{
	if(active){
		drawblankscreen(0);
		sdraw.blanktime = 0;
		sdraw.blanktime = MACHP(0)->ticks;
	}else{
		if(blanktime && TK2SEC(sdraw.blanktime)/60 >= blanktime)
		if(blanktime && sdraw.blanktime && TK2SEC(MACHP(0)->ticks - sdraw.blanktime)/60 >= blanktime)
			drawblankscreen(1);
		else
			sdraw.blanktime++;
	}
}

int
drawidletime(void)
{
	return TK2SEC(sdraw.blanktime)/60;
	return TK2SEC(MACHP(0)->ticks - sdraw.blanktime)/60;
}