Beispiel #1
0
static void testmode(int mode)
{
    int xmax, ymax, i, x, y, yw, ys, c;
    vga_modeinfo *modeinfo;

    vga_setmode(mode);

    modeinfo = vga_getmodeinfo(mode);

    printf("Width: %d  Height: %d  Colors: %d\n",
           modeinfo->width,
           modeinfo->height,
           modeinfo->colors);
    printf("DisplayStartRange: %xh  Maxpixels: %d  Blit: %s\n",
           modeinfo->startaddressrange,
           modeinfo->maxpixels,
           modeinfo->haveblit ? "YES" : "NO");

#ifdef TEST_MODEX
    if (modeinfo->colors == 256)
        printf("Switching to ModeX ... %s\n",
               (vga_setmodeX()? "done" : "failed"));
#endif

    vga_screenoff();

    xmax = vga_getxdim() - 1;
    ymax = vga_getydim() - 1;

    vga_setcolor(vga_white());
    vga_drawline(0, 0, xmax, 0);
    vga_drawline(xmax, 0, xmax, ymax);
    vga_drawline(xmax, ymax, 0, ymax);
    vga_drawline(0, ymax, 0, 0);

    /* Draw crosses */
    for (i = 0; i <= 15; i++) {
        vga_setegacolor(i);
        vga_drawline(10 + i * 5, 10, 89 + i * 5, 89);
    }
    for (i = 0; i <= 15; i++) {
        vga_setegacolor(i);
        vga_drawline(89 + i * 5, 10, 10 + i * 5, 89);
    }

    vga_screenon();

    ys = 100;
    yw = (ymax - 100) / 4;
    switch (vga_getcolors()) {
    case 256:
        /* Draw horizontal color bands using palette */
        for (i = 0; i < 60; ++i) {
            c = (i * 64) / 60;
            vga_setpalette(i + 16, c, c, c);
            vga_setpalette(i + 16 + 60, c, 0, 0);
            vga_setpalette(i + 16 + (2 * 60), 0, c, 0);
            vga_setpalette(i + 16 + (3 * 60), 0, 0, c);
        }
        line[0] = line[xmax] = 15;
        line[1] = line[xmax - 1] = 0;
        for (x = 2; x < xmax - 1; ++x)
            line[x] = (((x - 2) * 60) / (xmax - 3)) + 16;
        for (y = ys; y < ys + yw; ++y)	/* gray */
            vga_drawscanline(y, line);
        for (x = 2; x < xmax - 1; ++x)
            line[x] += 60;
        ys += yw;
        for (y = ys; y < ys + yw; ++y)	/* red */
            vga_drawscanline(y, line);
        for (x = 2; x < xmax - 1; ++x)
            line[x] += 60;
        ys += yw;
        for (y = ys; y < ys + yw; ++y)	/* green */
            vga_drawscanline(y, line);
        for (x = 2; x < xmax - 1; ++x)
            line[x] += 60;
        ys += yw;
        for (y = ys; y < ys + yw; ++y)	/* blue */
            vga_drawscanline(y, line);
        break;

    case 1 << 15:
    case 1 << 16:
    case 1 << 24:
        /* Draw horizontal color bands in RGB */
        for (x = 2; x < xmax - 1; ++x) {
            c = ((x - 2) * 255) / (xmax - 4);
            y = ys;
            vga_setrgbcolor(c, c, c);
            vga_drawline(x, y, x, y + yw - 1);
            y += yw;
            vga_setrgbcolor(c, 0, 0);
            vga_drawline(x, y, x, y + yw - 1);
            y += yw;
            vga_setrgbcolor(0, c, 0);
            vga_drawline(x, y, x, y + yw - 1);
            y += yw;
            vga_setrgbcolor(0, 0, c);
            vga_drawline(x, y, x, y + yw - 1);
        }
        drawSquares(xmax, ymax);
        break;
    default:
        /* Draw vertical color bars */
        if (vga_getcolors() == 16) {
            for (i = 0; i < xmax - 1; i++)
                line[i] = (i + 2) % 16;
            line[0] = line[xmax] = 15;
            line[1] = line[xmax - 1] = 0;
        }
        if (vga_getcolors() == 2) {
            for (i = 0; i <= xmax; i++)
                line[i] = 0x11;
            line[0] = 0x91;
        }
        for (i = 100; i < ymax - 1; i++)
            vga_drawscanline(i, line);
        break;

    }

    if (getchar() == 'd')
        vga_dumpregs();

}
int vga_clear(void)
{
    vga_screenoff();
#ifdef BACKGROUND
    __svgalib_dont_switch_vt_yet();
#endif
    if (MODEX)
	goto modeX;
    switch (CM) {
    case G320x200x256:
    case G320x240x256:
    case G320x400x256:
    case G360x480x256:
      modeX:
#ifdef BACKGROUND
        if (vga_oktowrite())
	    {
#endif
        
	/* write to all planes */
	port_out(0x02, SEQ_I);
	port_out(0x0F, SEQ_D);

	/* clear video memory */
	memset(GM, 0, 65536);
#ifdef BACKGROUND
	    }
	  else
	    {
	     int i;
	     
	     for (i = 0; i < 4; i++) {
	        /* save plane i */
	        __svgalib_fast_setpage(i);
	        memset(GM, 0, GRAPH_SIZE);
               }
	    }
#endif
	break;

    default:
	switch (CI.colors) {
	case 2:
	case 16:
	    vga_setcolor(0);

#ifdef BACKGROUND
        if (vga_oktowrite())
	    {
#endif
	    /* write to all bits */
	    port_out(0x08, GRA_I);
	    port_out(0xFF, GRA_D);
#ifdef BACKGROUND
	    }
#endif

	default:
	    {
		int i;
		int pages = (CI.ydim * CI.xbytes + 65535) >> 16;
#if defined(CONFIG_ALPHA_JENSEN)
		int j;
#endif
#ifdef BACKGROUND
                if (!vga_oktowrite())
	              {
		       switch (CI.colors) {
	                case 2:
	                case 16:
			pages*=4;
                       }
		      }
#endif

		for (i = 0; i < pages; ++i) {
		    vga_setpage(i);

#if defined(CONFIG_ALPHA_JENSEN)
		    for (j = 0; j < 65536; j += 2)
			gr_writew(0, j);
#else
		    /* clear video memory */
		    memset(GM, 0, 65536);
#endif
		}
	    }
	    break;
	}
	break;
    }

    vga_setcolor(15);
#ifdef BACKGROUND
    __svgalib_is_vt_switching_needed();
#endif
    vga_screenon();

    return 0;
}