draw.c

来自「quake1 dos源代码最新版本」· C语言 代码 · 共 958 行 · 第 1/2 页

			}
		}
		else
		{	// unwound
			for (v=0 ; v<pic->height ; v++)
			{
				for (u=0 ; u<pic->width ; u+=8)
				{
					if ( (tbyte=source[u]) != TRANSPARENT_COLOR)
						dest[u] = translation[tbyte];
					if ( (tbyte=source[u+1]) != TRANSPARENT_COLOR)
						dest[u+1] = translation[tbyte];
					if ( (tbyte=source[u+2]) != TRANSPARENT_COLOR)
						dest[u+2] = translation[tbyte];
					if ( (tbyte=source[u+3]) != TRANSPARENT_COLOR)
						dest[u+3] = translation[tbyte];
					if ( (tbyte=source[u+4]) != TRANSPARENT_COLOR)
						dest[u+4] = translation[tbyte];
					if ( (tbyte=source[u+5]) != TRANSPARENT_COLOR)
						dest[u+5] = translation[tbyte];
					if ( (tbyte=source[u+6]) != TRANSPARENT_COLOR)
						dest[u+6] = translation[tbyte];
					if ( (tbyte=source[u+7]) != TRANSPARENT_COLOR)
						dest[u+7] = translation[tbyte];
				}
				dest += vid.rowbytes;
				source += pic->width;
			}
		}
	}
	else
	{
	// FIXME: pretranslate at load time?
		pusdest = (unsigned short *)vid.buffer + y * (vid.rowbytes >> 1) + x;

		for (v=0 ; v<pic->height ; v++)
		{
			for (u=0 ; u<pic->width ; u++)
			{
				tbyte = source[u];

				if (tbyte != TRANSPARENT_COLOR)
				{
					pusdest[u] = d_8to16table[tbyte];
				}
			}

			pusdest += vid.rowbytes >> 1;
			source += pic->width;
		}
	}
}


void Draw_CharToConback (int num, byte *dest)
{
	int		row, col;
	byte	*source;
	int		drawline;
	int		x;

	row = num>>4;
	col = num&15;
	source = draw_chars + (row<<10) + (col<<3);

	drawline = 8;

	while (drawline--)
	{
		for (x=0 ; x<8 ; x++)
			if (source[x])
				dest[x] = 0x60 + source[x];
		source += 128;
		dest += 320;
	}

}

/*
================
Draw_ConsoleBackground

================
*/
void Draw_ConsoleBackground (int lines)
{
	int				x, y, v;
	byte			*src, *dest;
	unsigned short	*pusdest;
	int				f, fstep;
	qpic_t			*conback;
	char			ver[100];

	conback = Draw_CachePic ("gfx/conback.lmp");

// hack the version number directly into the pic
#ifdef _WIN32
	sprintf (ver, "(%s, WinQuake) %4.2f", QIP_VERSION, (float)VERSION);	// 2001-10-25 QIP version in the console background by Maddes
//	dest = conback->data + 320*186 + 320 - 11 - 8*strlen(ver);	// 2001-10-25 Version printing fix by Maddes
#elif defined(X11)
	sprintf (ver, "(%s, X11 Quake %2.2f) %4.2f", QIP_VERSION, (float)X11_VERSION, (float)VERSION);	// 2001-10-25 QIP version in the console background by Maddes
//	dest = conback->data + 320*186 + 320 - 11 - 8*strlen(ver);	// 2001-10-25 Version printing fix by Maddes
#elif defined(__linux__)
	sprintf (ver, "(%s, Linux Quake %2.2f) %4.2f", QIP_VERSION, (float)LINUX_VERSION, (float)VERSION);	// 2001-10-25 QIP version in the console background by Maddes
//	dest = conback->data + 320*186 + 320 - 11 - 8*strlen(ver);	// 2001-10-25 Version printing fix by Maddes
#else
	sprintf (ver, "(%s) %4.2f", QIP_VERSION, VERSION);	// 2001-10-25 QIP version in the console background by Maddes
//	dest = conback->data + 320 - 43 + 320*186;	// 2001-10-25 Version printing fix by Maddes
#endif
	dest = conback->data + 320*186 + 320 - 11 - 8*strlen(ver);	// 2001-10-25 Version printing fix by Maddes

	for (x=0 ; x<strlen(ver) ; x++)
		Draw_CharToConback (ver[x], dest+(x<<3));

// draw the pic
	if (r_pixbytes == 1)
	{
		dest = vid.conbuffer;

		for (y=0 ; y<lines ; y++, dest += vid.conrowbytes)
		{
			v = (vid.conheight - lines + y)*200/vid.conheight;
			src = conback->data + v*320;
// 2000-08-04 "Transparent" console background for software renderer by Norberto Alfredo Bensa/Maddes  start
/*
			if (vid.conwidth == 320)
				memcpy (dest, src, vid.conwidth);
			else
			{
*/
// 2000-08-04 "Transparent" console background for software renderer by Norberto Alfredo Bensa/Maddes  end
				f = 0;
				fstep = 320*0x10000/vid.conwidth;
// 2000-08-04 "Transparent" console background for software renderer by Norberto Alfredo Bensa/Maddes  start
			if (con_forcedup)
			{
				for (x = 0; x < vid.conwidth; x++, f+=fstep )
					dest[x] = src[f >> 16];
			}
			else
			{
				int	t;

				t = con_alpha->value * (float)CON_ALPHASTATES;
				if (t >= CON_ALPHASTATES)
				{
					t = CON_ALPHASTATES - 1;
				}
				t = fademask[t]>>((y&1)<<2);
// 2000-08-04 "Transparent" console background for software renderer by Norberto Alfredo Bensa/Maddes  end
				for (x=0 ; x<vid.conwidth ; x+=4)
				{
// 2000-08-04 "Transparent" console background for software renderer by Norberto Alfredo Bensa/Maddes  start
/*
					dest[x] = src[f>>16];
					f += fstep;
					dest[x+1] = src[f>>16];
					f += fstep;
					dest[x+2] = src[f>>16];
					f += fstep;
					dest[x+3] = src[f>>16];
					f += fstep;
*/
					if (t&1) dest[x]   = src[f>>16]; f+=fstep;
					if (t&2) dest[x+1] = src[f>>16]; f+=fstep;
					if (t&4) dest[x+2] = src[f>>16]; f+=fstep;
					if (t&8) dest[x+3] = src[f>>16]; f+=fstep;
// 2000-08-04 "Transparent" console background for software renderer by Norberto Alfredo Bensa/Maddes  end
				}
			}
		}
	}
	else
	{
		pusdest = (unsigned short *)vid.conbuffer;

		for (y=0 ; y<lines ; y++, pusdest += (vid.conrowbytes >> 1))
		{
		// FIXME: pre-expand to native format?
		// FIXME: does the endian switching go away in production?
			v = (vid.conheight - lines + y)*200/vid.conheight;
			src = conback->data + v*320;
			f = 0;
			fstep = 320*0x10000/vid.conwidth;
			for (x=0 ; x<vid.conwidth ; x+=4)
			{
				pusdest[x] = d_8to16table[src[f>>16]];
				f += fstep;
				pusdest[x+1] = d_8to16table[src[f>>16]];
				f += fstep;
				pusdest[x+2] = d_8to16table[src[f>>16]];
				f += fstep;
				pusdest[x+3] = d_8to16table[src[f>>16]];
				f += fstep;
			}
		}
	}
}


/*
==============
R_DrawRect8
==============
*/
void R_DrawRect8 (vrect_t *prect, int rowbytes, byte *psrc,
	int transparent)
{
	byte	t;
	int		i, j, srcdelta, destdelta;
	byte	*pdest;

	pdest = vid.buffer + (prect->y * vid.rowbytes) + prect->x;

	srcdelta = rowbytes - prect->width;
	destdelta = vid.rowbytes - prect->width;

	if (transparent)
	{
		for (i=0 ; i<prect->height ; i++)
		{
			for (j=0 ; j<prect->width ; j++)
			{
				t = *psrc;
				if (t != TRANSPARENT_COLOR)
				{
					*pdest = t;
				}

				psrc++;
				pdest++;
			}

			psrc += srcdelta;
			pdest += destdelta;
		}
	}
	else
	{
		for (i=0 ; i<prect->height ; i++)
		{
			memcpy (pdest, psrc, prect->width);
			psrc += rowbytes;
			pdest += vid.rowbytes;
		}
	}
}


/*
==============
R_DrawRect16
==============
*/
void R_DrawRect16 (vrect_t *prect, int rowbytes, byte *psrc,
	int transparent)
{
	byte			t;
	int				i, j, srcdelta, destdelta;
	unsigned short	*pdest;

// FIXME: would it be better to pre-expand native-format versions?

	pdest = (unsigned short *)vid.buffer +
			(prect->y * (vid.rowbytes >> 1)) + prect->x;

	srcdelta = rowbytes - prect->width;
	destdelta = (vid.rowbytes >> 1) - prect->width;

	if (transparent)
	{
		for (i=0 ; i<prect->height ; i++)
		{
			for (j=0 ; j<prect->width ; j++)
			{
				t = *psrc;
				if (t != TRANSPARENT_COLOR)
				{
					*pdest = d_8to16table[t];
				}

				psrc++;
				pdest++;
			}

			psrc += srcdelta;
			pdest += destdelta;
		}
	}
	else
	{
		for (i=0 ; i<prect->height ; i++)
		{
			for (j=0 ; j<prect->width ; j++)
			{
				*pdest = d_8to16table[*psrc];
				psrc++;
				pdest++;
			}

			psrc += srcdelta;
			pdest += destdelta;
		}
	}
}


/*
=============
Draw_TileClear

This repeats a 64*64 tile graphic to fill the screen around a sized down
refresh window.
=============
*/
void Draw_TileClear (int x, int y, int w, int h)
{
	int				width, height, tileoffsetx, tileoffsety;
	byte			*psrc;
	vrect_t			vr;

	r_rectdesc.rect.x = x;
	r_rectdesc.rect.y = y;
	r_rectdesc.rect.width = w;
	r_rectdesc.rect.height = h;

	vr.y = r_rectdesc.rect.y;
	height = r_rectdesc.rect.height;

	tileoffsety = vr.y % r_rectdesc.height;

	while (height > 0)
	{
		vr.x = r_rectdesc.rect.x;
		width = r_rectdesc.rect.width;

		if (tileoffsety != 0)
			vr.height = r_rectdesc.height - tileoffsety;
		else
			vr.height = r_rectdesc.height;

		if (vr.height > height)
			vr.height = height;

		tileoffsetx = vr.x % r_rectdesc.width;

		while (width > 0)
		{
			if (tileoffsetx != 0)
				vr.width = r_rectdesc.width - tileoffsetx;
			else
				vr.width = r_rectdesc.width;

			if (vr.width > width)
				vr.width = width;

			psrc = r_rectdesc.ptexbytes +
					(tileoffsety * r_rectdesc.rowbytes) + tileoffsetx;

			if (r_pixbytes == 1)
			{
				R_DrawRect8 (&vr, r_rectdesc.rowbytes, psrc, 0);
			}
			else
			{
				R_DrawRect16 (&vr, r_rectdesc.rowbytes, psrc, 0);
			}

			vr.x += vr.width;
			width -= vr.width;
			tileoffsetx = 0;	// only the left tile can be left-clipped
		}

		vr.y += vr.height;
		height -= vr.height;
		tileoffsety = 0;		// only the top tile can be top-clipped
	}
}


/*
=============
Draw_Fill

Fills a box of pixels with a single color
=============
*/
void Draw_Fill (int x, int y, int w, int h, int c)
{
	byte			*dest;
	unsigned short	*pusdest;
	unsigned		uc;
	int				u, v;

	if (r_pixbytes == 1)
	{
		dest = vid.buffer + y*vid.rowbytes + x;
		for (v=0 ; v<h ; v++, dest += vid.rowbytes)
			for (u=0 ; u<w ; u++)
				dest[u] = c;
	}
	else
	{
		uc = d_8to16table[c];

		pusdest = (unsigned short *)vid.buffer + y * (vid.rowbytes >> 1) + x;
		for (v=0 ; v<h ; v++, pusdest += (vid.rowbytes >> 1))
			for (u=0 ; u<w ; u++)
				pusdest[u] = uc;
	}
}
//=============================================================================

/*
================
Draw_FadeScreen

================
*/
void Draw_FadeScreen (void)
{
	int			x,y;
	byte		*pbuf;

	VID_UnlockBuffer ();
	S_ExtraUpdate ();
	VID_LockBuffer ();

	for (y=0 ; y<vid.height ; y++)
	{
		int	t;

		pbuf = (byte *)(vid.buffer + vid.rowbytes*y);
		t = (y & 1) << 1;

		for (x=0 ; x<vid.width ; x++)
		{
			if ((x & 3) != t)
				pbuf[x] = 0;
		}
	}

	VID_UnlockBuffer ();
	S_ExtraUpdate ();
	VID_LockBuffer ();
}

//=============================================================================

/*
================
Draw_BeginDisc

Draws the little blue disc in the corner of the screen.
Call before beginning any disc IO.
================
*/
void Draw_BeginDisc (void)
{

	D_BeginDirectRect (vid.width - 24, 0, draw_disc->data, 24, 24);
}


/*
================
Draw_EndDisc

Erases the disc icon.
Call after completing any disc IO
================
*/
void Draw_EndDisc (void)
{

	D_EndDirectRect (vid.width - 24, 0, 24, 24);
}