quakeforge/libs/video/renderer/crosshair.c

/*
	crosshair.c

	Crosshair static data.

	Copyright (C) 1996-1997  Id Software, Inc.

	This program is free software; you can redistribute it and/or
	modify it under the terms of the GNU General Public License
	as published by the Free Software Foundation; either version 2
	of the License, or (at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

	See the GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program; if not, write to:

		Free Software Foundation, Inc.
		59 Temple Place - Suite 330
		Boston, MA  02111-1307, USA

*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <stdlib.h>

#include "QF/qtypes.h"
#include "QF/wadfile.h"

#include "r_internal.h"

#define _ 0xff
#define X 0xfe
// NOTE: this array is INCORRECT for direct uploading in GL
// but is optimal for SW
byte crosshair_data[CROSSHAIR_WIDTH * CROSSHAIR_HEIGHT * CROSSHAIR_COUNT] = {
		_,_,_,X,_,_,_,_,
		_,_,_,_,_,_,_,_,
		_,_,_,X,_,_,_,_,
		X,_,X,_,X,_,X,_,
		_,_,_,X,_,_,_,_,
		_,_,_,_,_,_,_,_,
		_,_,_,X,_,_,_,_,
		_,_,_,_,_,_,_,_,

		X,_,_,_,_,_,X,_,
		_,X,_,_,_,X,_,_,
		_,_,_,_,_,_,_,_,
		_,_,_,_,_,_,_,_,
		_,_,_,_,_,_,_,_,
		_,X,_,_,_,X,_,_,
		X,_,_,_,_,_,X,_,
		_,_,_,_,_,_,_,_,

		//From FitzQuake
		_,_,_,_,_,_,_,_,
		_,_,_,8,9,_,_,_,
		_,_,_,6,8,2,_,_,
		_,6,8,8,6,8,8,_,
		_,_,2,8,8,2,2,2,
		_,_,_,7,8,2,_,_,
		_,_,_,_,2,2,_,_,
		_,_,_,_,_,_,_,_,

		_,_,X,X,X,_,_,_,
		_,X,_,_,_,X,_,_,
		X,_,_,_,_,_,X,_,
		X,_,_,X,_,_,X,_,
		X,_,_,_,_,_,X,_,
		_,X,_,_,_,X,_,_,
		_,_,X,X,X,_,_,_,
		_,_,_,_,_,_,_,_,
};
#undef _
#undef X

qpic_t *
Draw_CrosshairPic (void)
{
	qpic_t     *pic;
	byte       *data;
	int         i, j, x, y, ind;

	pic = malloc (field_offset (qpic_t, data[sizeof (crosshair_data)]));
	pic->width = CROSSHAIR_TILEX * CROSSHAIR_WIDTH;
	pic->height = CROSSHAIR_TILEY * CROSSHAIR_HEIGHT;
	// re-arrange the crosshair_data bytes so they're layed out properly for
	// subimaging
	data = crosshair_data;
	for (j = 0; j < CROSSHAIR_TILEY; j++) {
		for (i = 0; i < CROSSHAIR_TILEX; i++) {
			for (y = 0; y < CROSSHAIR_HEIGHT; y++) {
				for (x = 0; x < CROSSHAIR_WIDTH; x++) {
					ind = j * CROSSHAIR_HEIGHT + y;
					ind *= CROSSHAIR_WIDTH * CROSSHAIR_TILEX;
					ind += i * CROSSHAIR_WIDTH + x;
					pic->data[ind] = *data++;
				}
			}
		}
	}
	return pic;
}