nuclear@3: /*
nuclear@3: 256-color 3D graphics hack for real-mode DOS.
nuclear@3: Copyright (C) 2011  John Tsiombikas <nuclear@member.fsf.org>
nuclear@3: 
nuclear@3: This program is free software: you can redistribute it and/or modify
nuclear@3: it under the terms of the GNU General Public License as published by
nuclear@3: the Free Software Foundation, either version 3 of the License, or
nuclear@3: (at your option) any later version.
nuclear@3: 
nuclear@3: This program is distributed in the hope that it will be useful,
nuclear@3: but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@3: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nuclear@3: GNU General Public License for more details.
nuclear@3: 
nuclear@3: You should have received a copy of the GNU General Public License
nuclear@3: along with this program.  If not, see <http://www.gnu.org/licenses/>.
nuclear@3: */
nuclear@3: 
nuclear@3: #include <stdlib.h>
nuclear@3: #include "texture.h"
nuclear@3: #include "palman.h"
nuclear@3: 
nuclear@3: struct texture *tex_load(const char *fname)
nuclear@3: {
nuclear@3: 	return 0;	/* TODO */
nuclear@3: }
nuclear@3: 
nuclear@3: struct texture *tex_gen_checker(int xsz, int ysz, int ush, int vsh, int c1, int c2)
nuclear@3: {
nuclear@3: 	int i, j;
nuclear@3: 	struct texture *tex;
nuclear@3: 	unsigned char *pptr;
nuclear@3: 
nuclear@3: 	if(!(tex = malloc(sizeof *tex))) {
nuclear@3: 		return 0;
nuclear@3: 	}
nuclear@3: 	if(!(tex->pixels = malloc(xsz * ysz))) {
nuclear@3: 		free(tex);
nuclear@3: 		return 0;
nuclear@3: 	}
nuclear@3: 	tex->width = xsz;
nuclear@3: 	tex->height = ysz;
nuclear@3: 
nuclear@3: 	pptr = tex->pixels;
nuclear@3: 	for(i=0; i<ysz; i++) {
nuclear@3: 		for(j=0; j<xsz; j++) {
nuclear@3: 			int c = ((i >> vsh) & 1) == ((j >> ush) & 1) ? c1 : c2;
nuclear@3: 			*pptr++ = c;
nuclear@3: 		}
nuclear@3: 	}
nuclear@3: 	return tex;
nuclear@3: }