1994/0507/pc/devvga.c (diff list | history)

1994/0506/sys/src/9/pc/devvga.c:132,140 – 1994/0507/sys/src/9/pc/devvga.c:132,138 (short | long | prev | next)
1993/1116		static void cgascreenputs(char*, int); static void screenputc(char*); static void scroll(void); static ulong x3to32(uchar); static ulong x6to32(uchar);
1994/0506		static void greyscale(void);
1994/0507		static ulong xnto32(uchar, int);
1994/0415		static void workinit(Bitmap*, int, int);
1994/0416		extern void screenload(Rectangle, uchar*, int, int, int); extern void screenunload(Rectangle, uchar*, int, int, int);
1994/0506/sys/src/9/pc/devvga.c:309,316 – 1994/0507/sys/src/9/pc/devvga.c:307,312
1994/0503		cbuf[n] = 0; if(strncmp(cbuf, "hwcursor", 8) == 0) hwcursor = 1;
1994/0506		else if(strncmp(cbuf, "grey", 4) == 0) greyscale();
1994/0503		break;
1992/0527		case Qvgasize:
1992/1119		if(offset != 0 || n >= sizeof(cbuf))
1994/0506/sys/src/9/pc/devvga.c:591,603 – 1994/0507/sys/src/9/pc/devvga.c:587,602
1993/1116		switch(ldepth){ case 3: for(i = 0; i < 256; i++)
1994/0506		setcolor(i, x3to32(i>>5), x3to32(i>>2), x3to32(i|(i<<1)));
1994/0507		setcolor(i, xnto32(i>>5, 3), xnto32(i>>2, 3), xnto32(i<<1, 2)); setcolor(0x55, xnto32(0x15, 6), xnto32(0x15, 6), xnto32(0x15, 6)); setcolor(0xaa, xnto32(0x2a, 6), xnto32(0x2a, 6), xnto32(0x2a, 6)); setcolor(0xff, xnto32(0x3f, 6), xnto32(0x3f, 6), xnto32(0x3f, 6));
1993/1116		break; case 2: case 1: case 0: for(i = 0; i < 16; i++){ x = x6to32((i*63)/15);
1994/0507		x = xnto32((i*63)/15, 6);
1993/1116		setcolor(i, x, x, x); } break;
1994/0506/sys/src/9/pc/devvga.c:976,1036 – 1994/0507/sys/src/9/pc/devvga.c:975,997
1993/1116
1992/1119		/* * expand 3 and 6 bits of color to 32
1994/0507		* expand n bits of color to 32
1992/1119		*/ static ulong x3to32(uchar x)
1994/0507		xnto32(uchar x, int n)
1992/1119		{
1994/0507		int s;
1992/1119		ulong y; x = x&7; x= (x<<3)|x; y = (x<<(32-6))|(x<<(32-12))|(x<<(32-18))|(x<<(32-24))|(x<<(32-30));
1994/0507		x &= (1<<n)-1; y = 0; for(s = 32 - n; s > 0; s -= n) y |= x<<s; if(s < 0) y |= x>>(-s);
1992/1119		return y; } static ulong x6to32(uchar x) { ulong y; x = x&0x3f; y = (x<<(32-6))|(x<<(32-12))|(x<<(32-18))|(x<<(32-24))|(x<<(32-30)); return y;
1994/0506		} static ulong x8to32(uchar x) { ulong y;                  x = x&0xff; y = (x<<(32-8))|(x<<(32-16))|(x<<(32-24))|x; return y; } static void greyscale(void) { int i; ulong x;                  /* default color map (has to be outside the lock) */ switch(gscreen.ldepth){ case 3: for(i = 0; i < 256; i++){ x = x8to32(i); setcolor(i, x, x, x); } break; case 2: case 1: case 0: for(i = 0; i < 16; i++){ x = x6to32((i*63)/15); setcolor(i, x, x, x); } break; }
1992/1119		}
1993/1116		/*
1992/1119		* paging routines for different cards */
1994/0506/sys/src/9/pc/devvga.c:1364,1370 – 1994/0507/sys/src/9/pc/devvga.c:1325,1331
1994/0414		void cursoron(int dolock) {
1994/0416		int xoff, yoff;
1994/0507		int xoff, yoff, s;
1994/0414		Rectangle r; uchar *a; struct {
1994/0506/sys/src/9/pc/devvga.c:1377,1384 – 1994/0507/sys/src/9/pc/devvga.c:1338,1348
1994/0414		if(cursor.disable) return; if(dolock)
1994/0507		if(dolock){ s = 0; /* to avoid compiler warning */
1994/0414		lock(&cursor);
1994/0507		} else s = spllo(); /* to avoid freezing out the eia ports */
1994/0414
1994/0503		if(hwcursor) (*vgacard->mvcursor)(mousexy());
1994/0506/sys/src/9/pc/devvga.c:1430,1450 – 1994/0507/sys/src/9/pc/devvga.c:1394,1423
1994/0414		if(dolock) unlock(&cursor);
1994/0507		else splx(s);
1994/0414		} void cursoroff(int dolock) {
1994/0507		int s;
1994/0503		if(hwcursor) return;
1994/0414		if(cursor.disable) return; if(dolock)
1994/0507		if(dolock){ s = 0; /* to avoid a compiler warning */
1994/0414		lock(&cursor);
1994/0507		} else s = spllo(); /* to avoid freezing out the eia ports */
1994/0414		if(--cursor.visible == 0 && cursor.tl > 0) screenload(cursor.clipr, (uchar*)backbits, cursor.tl, cursor.l, 0); if(dolock) unlock(&cursor);
1994/0507		else splx(s);
1994/0414		}
1994/0415		static void