1995/0531/carrera/screen.c (diff list | history)

carrera/screen.c on 1993/0906
1993/0906		#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" #include <libg.h>
1994/0210		#include "screen.h"
1993/0906
1994/0210		#define MINX 8
1993/0906
1994/0210		#define DAC ((Dac*)BTDac) typedef struct Dac Dac; struct Dac
1993/0906		{
1994/0210		uchar pad0[7]; uchar cr0; uchar pad1[7]; uchar cr1; uchar pad2[7]; uchar cr2; uchar pad3[7]; uchar cr3;
1993/0906		};
1994/0211		char s1[] = { 0x00, 0x00, 0xC0, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
1993/0906
1994/0413		extern Subfont defont0;
1994/0210		static ulong rep(ulong, int);
1993/0906
1994/0210		struct{ Point pos; int bwid; }out; Lock screenlock;
1994/0413		Bitmap gscreen =
1993/0906		{
1994/0525		{ 0, 0, 1597, 1234 }, { 0, 0, 1597, 1234 },
1994/0413		3,
1994/0525		Screenvirt+0x000178D0,
1993/0918		0,
1994/0210		512,
1993/0918		0 };
1994/0413		static Bitmap hwcursor=
1993/0918		{
1994/0413		{0, 0, 64, 64}, {0, 0, 64, 64}, 1,
1994/0210		0, /* base filled in by malloc when needed */
1993/0906		0,
1994/0210		4,
1994/0413		0,
1994/0210		}; uchar bdata[] = { 0xC0, };
1994/0413		Bitmap bgrnd =
1994/0210		{
1994/0413		{ 0, 0, 1, 1 }, { 0, 0, 1, 1 }, 3,
1994/0210		(ulong*)bdata,
1993/1221		0,
1994/0210		4,
1993/0906		0 }; static Rectangle window;
1994/0414		static Point curpos;
1993/0906		static int h, w; void screenwin(void) {
1994/0210		Dac *d;
1994/0216		Point p; int i, y;
1994/0520		Cursor zero;
1993/1222
1994/0216		memset((void*)Screenvirt, 0xff, 3*1024*1024);
1994/0215
1994/0413		texture(&gscreen, gscreen.r, &bgrnd, S);
1993/0906		w = defont0.info[' '].width; h = defont0.height;
1994/0210		window.min = Pt(100, 100);
1994/0227		window.max = add(window.min, Pt(10+w*120, 10+h*60));
1993/0906
1994/0413		bitblt(&gscreen, add(window.min, Pt(5, 5)), &gscreen, window, F); bitblt(&gscreen, window.min, &gscreen, window, Zero); border(&gscreen, window, 4, F);
1993/0906		window = inset(window, 5);
1994/0216		for(i = 0; i < h+6; i += 2) { y = window.min.y+i;
1994/0413		bitblt(&gscreen, Pt(window.min.x, y), &gscreen, Rect(window.min.x, y, window.max.x, y+1), F);
1994/0216		} p = add(window.min, Pt(10, 2));
1994/0413		subfstring(&gscreen, p, &defont0, "Brazil Console ", S);
1994/0216		window.min.y += h+6;
1994/0414		curpos = window.min;
1993/0906		window.max.y = window.min.y+((window.max.y-window.min.y)/h)*h;
1993/0918
1994/0210		d = DAC; /* cursor color 1: white */ d->cr1 = 0x01; d->cr0 = 0x81; d->cr2 = 0xFF; d->cr2 = 0xFF; d->cr2 = 0xFF; /* cursor color 2: noir */ d->cr1 = 0x01; d->cr0 = 0x82; d->cr2 = 0; d->cr2 = 0; d->cr2 = 0; /* cursor color 3: schwarz */ d->cr1 = 0x01; d->cr0 = 0x83; d->cr2 = 0; d->cr2 = 0; d->cr2 = 0; /* initialize with all-transparent cursor */
1994/0520		memset(&zero, 0, sizeof zero); setcursor(&zero);
1994/0210		/* enable both planes of cursor */ d->cr1 = 0x03; d->cr0 = 0x00; d->cr2 = 0xc0;
1993/0906		}
1994/0210		void dacinit(void)
1993/0918		{
1994/0210		Dac *d; int i; ulong r, g, b;
1993/0908
1994/0210		d = DAC;
1993/1228
1994/0210		/* Control registers */ d->cr0 = 0x01; d->cr1 = 0x02; for(i = 0; i < sizeof s1; i++) d->cr2 = s1[i];
1993/0918
1994/0210		/* Cursor programming */ d->cr0 = 0x00; d->cr1 = 0x03; d->cr2 = 0xC0; for(i = 0; i < 12; i++) d->cr2 = 0; /* Load Cursor Ram */ d->cr0 = 0x00; d->cr1 = 0x04; for(i = 0; i < 0x400; i++) d->cr2 = 0xff; for(i = 0; i<256; i++) {
1994/0909		r = rep((i>>5) & 7, 3); g = rep((i>>2) & 7, 3); b = rep(i & 3, 2);
1994/0210		setcolor(i, r, g, b); }
1994/0909		setcolor(170, 0xAAAAAAAA, 0xAAAAAAAA, 0xAAAAAAAA); setcolor(85, 0x55555555, 0x55555555, 0x55555555);
1994/0210		/* Overlay Palette Ram */ d->cr0 = 0x00; d->cr1 = 0x01; for(i = 0; i < 0x10; i++) { d->cr2 = 0xff; d->cr2 = 0xff; d->cr2 = 0xff; } /* Overlay Palette Ram */ d->cr0 = 0x81; d->cr1 = 0x01; for(i = 0; i < 3; i++) { d->cr2 = 0xff; d->cr2 = 0xff; d->cr2 = 0xff; }
1993/1222		}
1993/0906		void screeninit(void) {
1994/0210		dacinit();
1993/0906
1994/0413		bitblt(&gscreen, Pt(0, 0), &gscreen, gscreen.r, 0);
1994/0210		out.pos.x = MINX; out.pos.y = 0; out.bwid = defont0.info[' '].width;
1993/0906		screenwin(); } static void scroll(void) { int o; Rectangle r; o = 5*h; r = Rpt(Pt(window.min.x, window.min.y+o), window.max);
1994/0413		bitblt(&gscreen, window.min, &gscreen, r, S);
1993/0906		r = Rpt(Pt(window.min.x, window.max.y-o), window.max);
1994/0413		bitblt(&gscreen, r.min, &gscreen, r, Zero);
1994/0414		curpos.y -= o;
1993/0906		} static void screenputc(char *buf) { int pos;
1994/0401		Rectangle r;
1993/0906		switch(buf[0]) { case '\n':
1994/0414		if(curpos.y+h >= window.max.y)
1993/0906		scroll();
1994/0414		curpos.y += h;
1993/0906		screenputc("\r"); break; case '\r':
1994/0414		curpos.x = window.min.x;
1993/0906		break; case '\t':
1994/0414		pos = (curpos.x-window.min.x)/w;
1993/0906		pos = 8-(pos%8);
1994/0414		curpos.x += pos*w;
1993/0906		break; case '\b':
1994/0414		if(curpos.x-w >= 0){ r.min.x = curpos.x-w; r.max.x = curpos.x; r.min.y = curpos.y; r.max.y = curpos.y+defont0.height;
1994/0413		bitblt(&gscreen, r.min, &gscreen, r, Zero);
1994/0414		curpos.x -= w;
1994/0401		}
1993/0906		break; default:
1994/0414		if(curpos.x >= window.max.x-w)
1993/0906		screenputc("\n");
1994/0414		curpos = subfstring(&gscreen, curpos, &defont0, buf, S);
1993/0906		} } void screenputs(char *s, int n) { int i; Rune r; char buf[4];
1993/0918		if((getstatus() & IE) == 0) {
1993/0906		/* don't deadlock trying to print in interrupt */ if(!canlock(&screenlock)) return; } else lock(&screenlock);
1994/0210		while(n > 0){
1993/0906		i = chartorune(&r, s); if(i == 0){ s++; --n; continue; } memmove(buf, s, i); buf[i] = 0; n -= i; s += i; screenputc(buf); } unlock(&screenlock); }
1994/0210		uchar revtab0[] = { 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0, 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8, 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8, 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4, 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4, 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec, 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc, 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2, 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2, 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea, 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa, 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6, 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6, 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee, 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe, 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1, 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1, 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9, 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9, 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5, 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5, 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed, 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd, 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3, 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3, 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb, 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb, 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7, 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7, 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef, 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff, };
1993/0906		void getcolor(ulong p, ulong *pr, ulong *pg, ulong *pb) {
1994/0210		Dac *d; uchar r, g, b; extern uchar revtab0[];
1993/1230
1994/0210		d = DAC;
1995/0531		/* to protect DAC from mouse movement */ lock(&cursor);
1994/0909		d->cr0 = revtab0[255 - (p & 0xFF)];
1994/0210		d->cr1 = 0; r = d->cr3; g = d->cr3; b = d->cr3; *pr = (r<<24) | (r<<16) | (r<<8) | r; *pg = (g<<24) | (g<<16) | (g<<8) | g; *pb = (b<<24) | (b<<16) | (b<<8) | b;
1995/0531		unlock(&cursor);
1993/0906		} int setcolor(ulong p, ulong r, ulong g, ulong b) {
1994/0210		Dac *d; extern uchar revtab0[];
1993/1230
1994/0210		d = DAC;
1993/0906
1995/0531		/* to protect DAC from mouse movement */ lock(&cursor);
1994/0909		d->cr0 = revtab0[255 - (p & 0xFF)];
1994/0210		d->cr1 = 0; d->cr3 = r >> 24; d->cr3 = g >> 24; d->cr3 = b >> 24;
1995/0531		unlock(&cursor);
1994/0210		return 1;
1993/0906		}
1994/0210		/* replicate (from top) value in v (n bits) until it fills a ulong */ static ulong rep(ulong v, int n)
1993/0906		{
1994/0210		int o; ulong rv;
1993/0906
1994/0210		rv = 0; for(o = 32 - n; o >= 0; o -= n) rv |= (v << o); return rv;
1993/0906		} void
1994/0520		setcursor(Cursor *curs)
1993/0906		{
1994/0210		Dac *d;
1994/0520		int x, y, i;
1994/0210		Point org;
1994/0520		uchar ylow, yhigh, *p;
1994/0210		ulong spix, cpix, dpix;
1994/0520		ulong s[16], c[16];
1993/0906
1994/0520		for(i=0; i<16; i++){ p = (uchar*)&s[i]; *p = curs->set[2*i]; *(p+1) = curs->set[2*i+1]; p = (uchar*)&c[i]; *p = curs->clr[2*i]; *(p+1) = curs->clr[2*i+1]; }
1994/0210		hwcursor.base = (ulong *)malloc(1024); if(hwcursor.base == 0) error(Enomem); /* hw cursor is 64x64 with hot point at (32,32) */
1994/0520		org = add(Pt(32,32), curs->offset);
1994/0210		for(x = 0; x < 16; x++) for(y = 0; y < 16; y++) { spix = (s[y]>>(31-(x&0x1F)))&1; cpix = (c[y]>>(31-(x&0x1F)))&1; dpix = (spix<<1) | cpix;
1994/0413		point(&hwcursor, add(Pt(x,y), org), dpix, S);
1994/0210		}
1993/0907
1994/0210		d = DAC;
1995/0531
1994/0210		/* have to set y offscreen before writing cursor bits */ d->cr1 = 0x03; d->cr0 = 0x03; ylow = d->cr2; yhigh = d->cr2; d->cr1 = 0x03; d->cr0 = 0x03; d->cr2 = 0xFF; d->cr2 = 0xFF; /* now set the bits */ d->cr1 = 0x04; d->cr0 = 0x00; for(x = 0; x < 1024; x++) d->cr2 = ((uchar *)hwcursor.base)[x]; /* set y back */ d->cr1 = 0x03; d->cr0 = 0x03; d->cr2 = ylow; d->cr2 = yhigh;
1995/0531
1994/0210		free(hwcursor.base);
1993/0906		}
1994/0624		int
1994/0414		cursoron(int dolock)
1993/0906		{
1994/0210		Dac *d;
1994/0414		Point p;
1993/0906
1994/0414		p = mousexy();
1994/0210		d = DAC;
1993/0906
1994/0414		if(dolock) lock(&cursor);
1994/0525		p.x += 296; /* adjusted by experiment */
1994/0414		p.y += 11; /* adjusted by experiment */
1994/0210		d->cr1 = 03; d->cr0 = 01;
1994/0414		d->cr2 = p.x&0xFF; d->cr2 = (p.x>>8)&0xF; d->cr2 = p.y&0xFF; d->cr2 = (p.y>>8)&0xF; if(dolock) unlock(&cursor);
1994/0624		return 0;
1993/0906		}
1994/0210		int screenbits(void)
1993/0906		{
1994/0210		return 1<<gscreen.ldepth;
1993/0906		}
1993/1026		extern cursorlock(Rectangle); extern cursorunlock(void);
1994/0210
1993/0930		/*
1993/1026		* paste tile into screen.
1993/1228		* tile is at location r, first pixel in *data. * tl is length of scan line to insert,
1993/1026		* l is amount to advance data after each scan line.
1994/0407		* gscreen.ldepth is known to be >= 3
1993/0930		*/ void
1994/0412		screenload(Rectangle r, uchar *data, int tl, int l, int dolock)
1993/0930		{ uchar *q;
1994/0407		int y;
1993/0930
1994/0412		USED(dolock);
1993/1026		if(!rectclip(&r, gscreen.r) || tl<=0)
1993/0930		return;
1994/0210
1993/0930		lock(&screenlock);
1994/0413		q = byteaddr(&gscreen, r.min);
1994/0407		for(y=r.min.y; y<r.max.y; y++){ memmove(q, data, tl);
1994/0412		q += gscreen.width*sizeof(ulong); data += l; } unlock(&screenlock); } /* * get a tile from screen memory. * tile is at location r, first pixel in *data. * tl is length of scan line to insert, * l is amount to advance data after each scan line.
1994/0413		* gscreen.ldepth is known to be >= 3. * screenunload() doesn't clip, so must be * called correctly.
1994/0412		*/ void screenunload(Rectangle r, uchar *data, int tl, int l, int dolock) { uchar *q; int y; USED(dolock); lock(&screenlock);
1994/0413		q = byteaddr(&gscreen, r.min);
1994/0412		for(y=r.min.y; y<r.max.y; y++){ memmove(data, q, tl);
1994/0407		q += gscreen.width*sizeof(ulong); data += l; }
1993/0930		unlock(&screenlock);
1993/0906		}