1992/0812/ss/screen.c (diff list | history)

1992/0812/sys/src/9/ss/screen.c:20,27 – 1992/0813/sys/src/9/ss/screen.c:20,39 (short | long | prev | next)
1990/1223		int bwid; }out; void (*kprofp)(ulong);
1992/0813		static ulong rep(ulong, int); void (*kprofp)(ulong);
1990/1223
1992/0813		/* Brooktree 458/451 */ typedef struct DAC DAC; struct DAC { uchar pad[16]; ulong dacaddr; /* DAC address register */ ulong daccolor; /* DAC color palette */ ulong daccntrl; /* DAC control register */ ulong dacovrl; /* DAC overlay palette */ }*dac;
1992/0810		GBitmap gscreen; struct screens
1992/0812/sys/src/9/ss/screen.c:30,39 – 1992/0813/sys/src/9/ss/screen.c:42,52
1992/0810		int x; int y; int ld;
1992/0813		ulong dacaddr;
1992/0810		}screens[] = {
1992/0812		{ "bwtwo", 1152, 900, 0 }, { "cgsix", 1152, 900, 3 }, { "cgthree", 1152, 900, 3 },
1992/0813		{ "bwtwo", 1152, 900, 0, 0x400000 }, { "cgsix", 1152, 900, 3, 0x400000 }, { "cgthree", 1152, 900, 3, 0x200000 },
1990/1223		0 };
1992/0812/sys/src/9/ss/screen.c:43,49 – 1992/0813/sys/src/9/ss/screen.c:56,64
1992/0812		screeninit(char *str)
1990/1223		{
1992/0810		struct screens *s;
1992/0812		ulong n;
1992/0813		ulong n, r, g, b; int i; int havecol;
1992/0810		for(s=screens; s->type; s++)
1992/0812		if(strcmp(s->type, str) == 0)
1992/0812/sys/src/9/ss/screen.c:70,78 – 1992/0813/sys/src/9/ss/screen.c:85,144
1990/1223		out.pos.x = MINX; out.pos.y = 0; out.bwid = defont0.info[' '].width;
1992/0813		dac = (DAC*)kmappa(FRAMEBUF+s->dacaddr, PTENOCACHE|PTEIO); if(gscreen.ldepth == 3){ havecol = 0; if(havecol) { /* * For now, just use a fixed colormap, where pixel i is * regarded as 3 bits of red, 3 bits of green, and 2 bits of blue. * Intensities are inverted so that 0 means white, 255 means black. * Exception: pixels 85 and 170 are set to intermediate grey values * so that 2-bit grey scale images will look ok on this screen. */ for(i = 0; i<256; i++) { r = ~rep((i>>5) & 7, 3); g = ~rep((i>>2) & 7, 3); b = ~rep(i & 3, 2); setcolor(i, r, g, b); } setcolor(85, 0xAAAAAAAA, 0xAAAAAAAA, 0xAAAAAAAA); setcolor(170, 0x55555555, 0x55555555, 0x55555555); } else { dac->dacaddr = 4; dac->daccntrl = 0xFF; dac->dacaddr = 5; dac->daccntrl = 0x00; dac->dacaddr = 6; dac->daccntrl = 0x40; dac->dacaddr = 7; dac->daccntrl = 0x00; dac->dacaddr = 0; for(i=0; i<252; i+=4) { dac->daccolor = ~rep(i,8); dac->daccolor = ~rep(i,8); dac->daccolor = ~rep(i,8); } /* for(i = 0; i<256; i++) setcolor(i, ~rep(i,8), ~rep(i,8), ~rep(i,8)); */ } }
1990/1223		} void
1992/0813		mapdump(void) { int i; dac->dacaddr = 0; for(i=0; i<100; i++) print("%lux ", dac->daccolor); } void
1991/1228		screenputnl(void) {
1992/0807		if(!conf.monitor)
1992/0812/sys/src/9/ss/screen.c:128,138 – 1992/0813/sys/src/9/ss/screen.c:194,205
1990/1223
1990/1231		/*
1991/0112		* Map is indexed by keyboard char, output is ASCII. * Gnotisms: Return sends newline and Line Feed sends carriage return.
1992/0813		* Plan 9-isms: * Return sends newline and Line Feed sends carriage return.
1991/0112		* Delete and Backspace both send backspace. * Num Lock sends delete (rubout). * Alt Graph is VIEW (scroll). * Compose builds Latin-1 characters.
1992/0813		* Compose builds Unicode characters.
1990/1231		*/ uchar keymap[128] = { /* 00 L1 02 L2 04 F1 F2 07 */
1992/0812/sys/src/9/ss/screen.c:393,408 – 1992/0813/sys/src/9/ss/screen.c:460,486
1991/0707		void getcolor(ulong p, ulong *pr, ulong *pg, ulong *pb) {
1992/0813		uchar r, g, b;
1991/0707		ulong ans; /* * The slc monochrome says 0 is white (max intensity) */ if(p == 0) ans = ~0; else ans = 0; *pr = *pg = *pb = ans;
1992/0813		if(1 || gscreen.ldepth == 0) { if(p == 0) ans = ~0; else ans = 0; *pr = *pg = *pb = ans; } else { *(uchar *)&dac->dacaddr = p & 0xFF; r = *(uchar *)&dac->daccolor; g = *(uchar *)&dac->daccolor; b = *(uchar *)&dac->daccolor; *pr = (r<<24) | (r<<16) | (r<<8) | r; *pg = (g<<24) | (g<<16) | (g<<8) | g; *pb = (b<<24) | (b<<16) | (b<<8) | b; }
1991/0707		}
1992/0812/sys/src/9/ss/screen.c:409,416 – 1992/0813/sys/src/9/ss/screen.c:487,504
1991/0707		int setcolor(ulong p, ulong r, ulong g, ulong b) {
1992/0711		USED(p, r, g, b);
1991/0707		return 0; /* can't change mono screen colormap */
1992/0813		if(1 || gscreen.ldepth == 0) return 0; /* can't change mono screen colormap */ else { /* perhaps not reliable unless done while vertical blanking ? */ *(uchar *)&dac->dacaddr = p & 0xFF; /* *(uchar *)&dac->daccolor = r >> 24; *(uchar *)&dac->daccolor = g >> 24; *(uchar *)&dac->daccolor = b >> 24; */ return 1; }
1991/0707		} int
1992/0812/sys/src/9/ss/screen.c:431,434 – 1992/0813/sys/src/9/ss/screen.c:519,535
1991/0707		mouseclock(void) /* called splhi */ { mouseupdate(1);
1992/0813		} /* replicate (from top) value in v (n bits) until it fills a ulong */ static ulong rep(ulong v, int n) { int o; ulong rv; rv = 0; for(o = 32 - n; o >= 0; o -= n) rv |= (v << o); return rv;
1990/1223		}