#include "u.h"#include "lib.h"#include "dat.h"#include "fns.h"#include "error.h" #include <draw.h>#include <memdraw.h>#include <keyboard.h>#include <cursor.h>#include <SDL.h>#include "screen.h" #define argv0 "drawterm" SDL_Surface *window; /* perfect approximation to NTSC = .299r+.587g+.114b when 0 ≤ r,g,b < 256 */#define RGB2K(r,g,b)	((156763*(r)+307758*(g)+59769*(b))>>19)#define FLIP(u)		(((u >> 24) & 0xff) | (((u >> 16) & 0xff) << 8) | (((u >> 8) & 0xff) << 16) | ((u & 0xff) << 24)) voidsdlbits(Memimage *i, Rectangle r){	uchar *p;	uchar *q;	int bpp, j, k; 	SDL_LockSurface(window);	bpp = window->format->BytesPerPixel;	p = (uchar*) window->pixels + r.min.y * window->pitch + r.min.x * bpp;	q = byteaddr(i, r.min);	for(j = r.min.y; j < r.max.y; j++){		for (k = 0; k < Dx(r); k++) {			((ulong*)p)[k] = FLIP(((ulong*)q)[k]);		}		p += window->pitch;		q += window->pitch;	}	SDL_UnlockSurface(window);} ulongpixelbits(Memimage *m, Point p){	SDL_Surface *s;	ulong r; 	if(window != NULL){		s = window;		SDL_LockSurface(s);		r = * ((ulong *) s->pixels + p.y * s->pitch + p.x * 4);		r = FLIP(r);		SDL_UnlockSurface(s);		return r;	}	return pixelbits(m, p);} static intxdraw(Memimage *dst, Rectangle r, Memimage *src, Point sp, Memimage *mask, Point mp, int op){	return 0;} Memimage *gscreen;Screeninfo screen; voidflushmemscreen(Rectangle r){	sdlbits(gscreen, r);	SDL_UpdateRect(window, r.min.x, r.min.y, Dx(r), Dy(r));} Memimage *xinitscreen(void){	if(SDL_Init(SDL_INIT_VIDEO) < 0)		return NULL; 	window = SDL_SetVideoMode(640, 480, 32, 0);	if(window == NULL)		return NULL;		gscreen = allocmemimage(Rect(0, 0, 640, 480), RGBA32);		return gscreen;} voidscreeninit(void){	_memmkcmap(); 	gscreen = xinitscreen(); 	memimageinit();	terminit();	qlock(&drawlock);	flushmemscreen(gscreen->clipr);	qunlock(&drawlock);} uchar*attachscreen(Rectangle *r, ulong *chan, int *depth,	int *width, int *softscreen){	*r = gscreen->r;	*chan = gscreen->chan;	*depth = gscreen->depth;	*width = gscreen->width;	*softscreen = 1; 	return gscreen->data->bdata;} voidmouseset(Point xy){} voidsetcursor(void){} voidcursorarrow(void){} voidgetcolor(ulong i, ulong *r, ulong *g, ulong *b){	ulong v;		v = cmap2rgb(i);	*r = (v>>16)&0xFF;	*g = (v>>8)&0xFF;	*b = v&0xFF;} voidsetcolor(ulong i, ulong r, ulong g, ulong b){	/* no-op */} intatlocalconsole(void){	return 0;} static char *snarfbuf = NULL; char*clipread(void){	return strdup(snarfbuf? snarfbuf: ""); } intclipwrite(char *buf){	if (snarfbuf)		free(snarfbuf);	snarfbuf = strdup(buf);	return 0;} voidsetterm(int raw){} voidguimain(void){	cpubody();}