deepstone

annotate src/test.c @ 3:0e781cc43178

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adding textures
author John Tsiombikas <nuclear@member.fsf.org>
date Mon, 21 Nov 2011 10:16:09 +0200
parents 0b7f840afe4a
children c3e0bccd673e
rev   line source
nuclear@0 1 /*
nuclear@0 2 256-color 3D graphics hack for real-mode DOS.
nuclear@0 3 Copyright (C) 2011 John Tsiombikas <nuclear@member.fsf.org>
nuclear@0 4
nuclear@0 5 This program is free software: you can redistribute it and/or modify
nuclear@0 6 it under the terms of the GNU General Public License as published by
nuclear@0 7 the Free Software Foundation, either version 3 of the License, or
nuclear@0 8 (at your option) any later version.
nuclear@0 9
nuclear@0 10 This program is distributed in the hope that it will be useful,
nuclear@0 11 but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@0 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
nuclear@0 13 GNU General Public License for more details.
nuclear@0 14
nuclear@0 15 You should have received a copy of the GNU General Public License
nuclear@0 16 along with this program. If not, see <http://www.gnu.org/licenses/>.
nuclear@0 17 */
nuclear@0 18 #include <stdio.h>
nuclear@0 19 #include <stdlib.h>
nuclear@0 20 #include <string.h>
nuclear@0 21 #include <signal.h>
nuclear@0 22 #include <conio.h>
nuclear@0 23 #include "vga.h"
nuclear@0 24 #include "mingl.h"
nuclear@0 25 #include "timer.h"
nuclear@0 26 #include "mouse.h"
nuclear@1 27 #include "palman.h"
nuclear@3 28 #include "texture.h"
nuclear@0 29
nuclear@0 30 static int init(void);
nuclear@0 31 static void shutdown(void);
nuclear@0 32 static void redraw(void);
nuclear@0 33 static void draw_cursor(unsigned char *fb, int xsz, int ysz, int mx, int my, int cidx);
nuclear@0 34 static int keyb(char key);
nuclear@0 35 static void mouse_button(int bn, int x, int y);
nuclear@0 36 static void mouse_motion(int x, int y);
nuclear@0 37 static void sighandler(int s);
nuclear@0 38 static int parse_args(int argc, char **argv);
nuclear@0 39 static void print_perf(void);
nuclear@0 40
nuclear@0 41 static unsigned char *fbuf;
nuclear@0 42
nuclear@3 43 static struct texture *tex;
nuclear@3 44
nuclear@1 45 static int white_base, red_base, green_base, blue_base;
nuclear@1 46 static int grad_range;
nuclear@1 47
nuclear@0 48 static int use_vsync = 1;
nuclear@0 49 static int under_windows = 0;
nuclear@0 50 static unsigned long num_frm;
nuclear@0 51
nuclear@0 52 enum { CUBE, SPHERE, TORUS, NUM_PRIMS };
nuclear@0 53 static int prim = SPHERE;
nuclear@0 54 static int auto_rotate = 1;
nuclear@0 55 static float cam_theta, cam_phi;
nuclear@0 56
nuclear@0 57 static int mx, my;
nuclear@0 58
nuclear@0 59 int main(int argc, char **argv)
nuclear@0 60 {
nuclear@0 61 int mbn, prev_mx = -1, prev_my = -1, prev_mbn = 0;
nuclear@0 62
nuclear@0 63 if(parse_args(argc, argv) == -1) {
nuclear@0 64 return 1;
nuclear@0 65 }
nuclear@0 66
nuclear@0 67 if(init() == -1) {
nuclear@0 68 return 1;
nuclear@0 69 }
nuclear@0 70
nuclear@0 71 reset_timer();
nuclear@0 72
nuclear@0 73 for(;;) {
nuclear@0 74 if(kbhit()) {
nuclear@0 75 if(keyb(getch()) == 0) {
nuclear@0 76 break;
nuclear@0 77 }
nuclear@0 78 }
nuclear@0 79
nuclear@0 80 mbn = read_mouse(&mx, &my);
nuclear@0 81 if(mbn != prev_mbn) {
nuclear@0 82 mouse_button(mbn, mx, my);
nuclear@0 83 prev_mbn = mbn;
nuclear@0 84 }
nuclear@0 85 if(mx != prev_mx || my != prev_my) {
nuclear@0 86 if(mbn) {
nuclear@0 87 mouse_motion(mx, my);
nuclear@0 88 }
nuclear@0 89 prev_mx = mx;
nuclear@0 90 prev_my = my;
nuclear@0 91 }
nuclear@0 92
nuclear@0 93 redraw();
nuclear@0 94 }
nuclear@0 95
nuclear@0 96 shutdown();
nuclear@0 97 print_perf();
nuclear@0 98 return 0;
nuclear@0 99 }
nuclear@0 100
nuclear@0 101 static int init(void)
nuclear@0 102 {
nuclear@0 103 int i;
nuclear@1 104 struct palm_color *pal;
nuclear@0 105
nuclear@0 106 init_timer(under_windows ? 0 : 100);
nuclear@0 107
nuclear@0 108 set_video_mode(0x13);
nuclear@0 109
nuclear@0 110 signal(SIGINT, sighandler);
nuclear@0 111 signal(SIGSEGV, sighandler);
nuclear@0 112 signal(SIGFPE, sighandler);
nuclear@0 113 signal(SIGILL, sighandler);
nuclear@0 114 signal(SIGABRT, sighandler);
nuclear@0 115
nuclear@1 116 palm_add_color(255, 255, 255);
nuclear@1 117 palm_add_color(255, 0, 0);
nuclear@1 118 palm_add_color(0, 255, 0);
nuclear@1 119 palm_add_color(0, 0, 255);
nuclear@1 120 palm_build();
nuclear@1 121
nuclear@1 122 white_base = palm_color_base(255, 255, 255);
nuclear@1 123 red_base = palm_color_base(255, 0, 0);
nuclear@1 124 green_base = palm_color_base(0, 255, 0);
nuclear@1 125 blue_base = palm_color_base(0, 0, 255);
nuclear@1 126 grad_range = palm_color_range();
nuclear@1 127
nuclear@1 128 pal = palm_palette();
nuclear@1 129 for(i=0; i<palm_palette_size(); i++) {
nuclear@1 130 set_palette(i, pal[i].r, pal[i].g, pal[i].b);
nuclear@0 131 }
nuclear@0 132
nuclear@0 133 if(mgl_init(320, 200) == -1) {
nuclear@0 134 fprintf(stderr, "mgl init failed\n");
nuclear@0 135 return -1;
nuclear@0 136 }
nuclear@0 137 fbuf = mgl_framebuffer();
nuclear@0 138
nuclear@0 139 mgl_enable(MGL_CULL_FACE);
nuclear@0 140 mgl_enable(MGL_SMOOTH);
nuclear@1 141 mgl_color_range(grad_range - 1); /* gradient range */
nuclear@0 142
nuclear@0 143 mgl_enable(MGL_LIGHTING);
nuclear@0 144 mgl_light_intensity(0, 1.0);
nuclear@0 145 mgl_light_direction(0, -0.5, 0.5, 1);
nuclear@0 146
nuclear@0 147 mgl_matrix_mode(MGL_PROJECTION);
nuclear@0 148 mgl_load_identity();
nuclear@0 149 mgl_perspective(45.0, 320.0 / 200.0, 0.5, 100.0);
nuclear@0 150
nuclear@3 151 if(!(tex = tex_gen_checker(64, 64, 3, 3, red_base, blue_base))) {
nuclear@3 152 fprintf(stderr, "failed to generate texture\n");
nuclear@3 153 return -1;
nuclear@3 154 }
nuclear@3 155 mgl_teximage(tex->width, tex->height, tex->pixels);
nuclear@3 156
nuclear@0 157 return 0;
nuclear@0 158 }
nuclear@0 159
nuclear@0 160 static void shutdown(void)
nuclear@0 161 {
nuclear@0 162 mgl_free();
nuclear@0 163 set_video_mode(3);
nuclear@0 164 }
nuclear@0 165
nuclear@0 166 static void redraw(void)
nuclear@0 167 {
nuclear@0 168 float angle = get_msec() / 10.0;
nuclear@0 169 mgl_clear(0);
nuclear@0 170
nuclear@0 171 mgl_matrix_mode(MGL_MODELVIEW);
nuclear@0 172 mgl_load_identity();
nuclear@0 173 if(auto_rotate) {
nuclear@0 174 mgl_rotate(angle, 0, 0, 1);
nuclear@0 175 mgl_rotate(angle * 0.5, 1, 0, 0);
nuclear@0 176 } else {
nuclear@0 177 mgl_rotate(cam_theta, 0, 1, 0);
nuclear@0 178 mgl_rotate(cam_phi, 1, 0, 0);
nuclear@0 179 }
nuclear@0 180 mgl_translate(0, 0, -4);
nuclear@0 181
nuclear@0 182 switch(prim) {
nuclear@0 183 case TORUS:
nuclear@1 184 mgl_index(green_base);
nuclear@0 185 mgl_torus(1.0, 0.25, 16, 8);
nuclear@0 186 break;
nuclear@0 187 case SPHERE:
nuclear@1 188 mgl_index(blue_base);
nuclear@0 189 mgl_sphere(1.0, 16, 8);
nuclear@0 190 break;
nuclear@0 191 case CUBE:
nuclear@1 192 mgl_index(red_base);
nuclear@0 193 mgl_cube(1.0);
nuclear@0 194 }
nuclear@0 195
nuclear@0 196 if(!auto_rotate) {
nuclear@1 197 draw_cursor(fbuf, 320, 200, mx, my, white_base + grad_range - 1);
nuclear@0 198 }
nuclear@0 199
nuclear@0 200 copy_frame(fbuf);
nuclear@0 201 if(use_vsync) {
nuclear@0 202 wait_vsync();
nuclear@0 203 }
nuclear@0 204 num_frm++;
nuclear@0 205 }
nuclear@0 206
nuclear@0 207 static void draw_cursor(unsigned char *fb, int xsz, int ysz, int mx, int my, int cidx)
nuclear@0 208 {
nuclear@0 209 static char img[] =
nuclear@0 210 "oo........"
nuclear@0 211 "oxo......."
nuclear@0 212 "oxxo......"
nuclear@0 213 "oxxxo....."
nuclear@0 214 "oxxxxo...."
nuclear@0 215 "oxxxxxo..."
nuclear@0 216 "oxxxxxxo.."
nuclear@0 217 "oxxxxxxxo."
nuclear@0 218 "oxxxxxxxxo"
nuclear@0 219 "oxxxxxoooo"
nuclear@0 220 "oxxoxxo..."
nuclear@0 221 "oxo.oxxo.."
nuclear@0 222 "oo..oxxo.."
nuclear@0 223 ".....oxxo."
nuclear@0 224 ".....oxxo."
nuclear@0 225 "......oo..";
nuclear@0 226 int i, j, w = 10, h = 16;
nuclear@0 227
nuclear@0 228 if(mx < 0 || my < 0) {
nuclear@0 229 return;
nuclear@0 230 }
nuclear@0 231 if(mx + w >= xsz) {
nuclear@0 232 w = xsz - mx;
nuclear@0 233 }
nuclear@0 234 if(my + h >= ysz) {
nuclear@0 235 h = ysz - my;
nuclear@0 236 }
nuclear@0 237
nuclear@0 238 fb += my * xsz + mx;
nuclear@0 239 for(i=0; i<h; i++) {
nuclear@0 240 for(j=0; j<w; j++) {
nuclear@0 241 char c = img[(i << 3) + (i << 1) + j];
nuclear@0 242 if(c != '.') {
nuclear@0 243 fb[j] = c == 'x' ? 0 : cidx;
nuclear@0 244 }
nuclear@0 245 }
nuclear@0 246 fb += xsz;
nuclear@0 247 }
nuclear@0 248 }
nuclear@0 249
nuclear@0 250 static int keyb(char key)
nuclear@0 251 {
nuclear@0 252 switch(key) {
nuclear@0 253 case 'q':
nuclear@0 254 case 27:
nuclear@0 255 return 0;
nuclear@0 256
nuclear@3 257 case 's':
nuclear@3 258 if(mgl_isenabled(MGL_SMOOTH)) {
nuclear@3 259 mgl_disable(MGL_SMOOTH);
nuclear@3 260 } else {
nuclear@3 261 mgl_enable(MGL_SMOOTH);
nuclear@3 262 }
nuclear@3 263 break;
nuclear@3 264
nuclear@3 265 case 't':
nuclear@3 266 if(mgl_isenabled(MGL_TEXTURE_2D)) {
nuclear@3 267 mgl_disable(MGL_TEXTURE_2D);
nuclear@3 268 } else {
nuclear@3 269 mgl_enable(MGL_TEXTURE_2D);
nuclear@3 270 }
nuclear@3 271 break;
nuclear@3 272
nuclear@0 273 case ' ':
nuclear@0 274 auto_rotate = !auto_rotate;
nuclear@0 275 break;
nuclear@0 276
nuclear@0 277 case 'p':
nuclear@0 278 prim = (prim + 1) % NUM_PRIMS;
nuclear@0 279 break;
nuclear@0 280
nuclear@0 281 default:
nuclear@0 282 break;
nuclear@0 283 }
nuclear@0 284 return 1;
nuclear@0 285 }
nuclear@0 286
nuclear@0 287 static int bnstate;
nuclear@0 288 static int prev_x, prev_y;
nuclear@0 289
nuclear@0 290 static void mouse_button(int bn, int x, int y)
nuclear@0 291 {
nuclear@0 292 bnstate = bn;
nuclear@0 293 prev_x = x;
nuclear@0 294 prev_y = y;
nuclear@0 295 }
nuclear@0 296
nuclear@0 297 static void mouse_motion(int x, int y)
nuclear@0 298 {
nuclear@0 299 int dx, dy;
nuclear@0 300
nuclear@0 301 dx = x - prev_x;
nuclear@0 302 dy = y - prev_y;
nuclear@0 303 prev_x = x;
nuclear@0 304 prev_y = y;
nuclear@0 305
nuclear@0 306 if(bnstate) {
nuclear@0 307 cam_theta += dx;
nuclear@0 308 cam_phi += dy;
nuclear@0 309
nuclear@0 310 if(cam_phi > 90) cam_phi = 90;
nuclear@0 311 if(cam_phi < -90) cam_phi = -90;
nuclear@0 312 }
nuclear@0 313 }
nuclear@0 314
nuclear@0 315 static void sighandler(int s)
nuclear@0 316 {
nuclear@0 317 set_video_mode(3);
nuclear@0 318
nuclear@0 319 switch(s) {
nuclear@0 320 case SIGABRT:
nuclear@0 321 fprintf(stderr, "abort\n");
nuclear@0 322 break;
nuclear@0 323
nuclear@0 324 case SIGILL:
nuclear@0 325 fprintf(stderr, "illegal operation\n");
nuclear@0 326 break;
nuclear@0 327
nuclear@0 328 case SIGSEGV:
nuclear@0 329 fprintf(stderr, "segmentation fault\n");
nuclear@0 330 break;
nuclear@0 331
nuclear@0 332 case SIGINT:
nuclear@0 333 fprintf(stderr, "interrupted\n");
nuclear@0 334 break;
nuclear@0 335
nuclear@0 336 case SIGFPE:
nuclear@0 337 fprintf(stderr, "floating point exception\n");
nuclear@0 338 break;
nuclear@0 339
nuclear@0 340 default:
nuclear@0 341 fprintf(stderr, "unexpected signal\n");
nuclear@0 342 }
nuclear@0 343
nuclear@0 344 exit(1);
nuclear@0 345 }
nuclear@0 346
nuclear@0 347 static int parse_args(int argc, char **argv)
nuclear@0 348 {
nuclear@0 349 int i;
nuclear@0 350
nuclear@0 351 for(i=1; i<argc; i++) {
nuclear@0 352 if(argv[i][0] == '-') {
nuclear@0 353 if(argv[i][2] != 0) {
nuclear@0 354 goto invalid;
nuclear@0 355 }
nuclear@0 356 switch(argv[i][1]) {
nuclear@0 357 case 'a':
nuclear@0 358 auto_rotate = !auto_rotate;
nuclear@0 359 break;
nuclear@0 360
nuclear@0 361 case 'v':
nuclear@0 362 use_vsync = !use_vsync;
nuclear@0 363 break;
nuclear@0 364
nuclear@0 365 case 'p':
nuclear@0 366 if(strcmp(argv[++i], "cube") == 0) {
nuclear@0 367 prim = CUBE;
nuclear@0 368 } else if(strcmp(argv[i], "sphere") == 0) {
nuclear@0 369 prim = SPHERE;
nuclear@0 370 } else if(strcmp(argv[i], "torus") == 0) {
nuclear@0 371 prim = TORUS;
nuclear@0 372 } else {
nuclear@0 373 goto invalid;
nuclear@0 374 }
nuclear@0 375 break;
nuclear@0 376
nuclear@0 377 case 'w':
nuclear@0 378 under_windows = 1;
nuclear@0 379 break;
nuclear@0 380
nuclear@0 381 case 'h':
nuclear@0 382 printf("Usage %s [options]\n", argv[0]);
nuclear@0 383 printf("options:\n");
nuclear@0 384 printf(" -p select one of (cube|sphere|torus)\n");
nuclear@0 385 printf(" -v use vsync\n");
nuclear@0 386 printf(" -w run under windows\n");
nuclear@0 387 printf(" -h print usage information and exit\n");
nuclear@0 388 exit(0);
nuclear@0 389
nuclear@0 390 default:
nuclear@0 391 goto invalid;
nuclear@0 392 }
nuclear@0 393 } else {
nuclear@0 394 goto invalid;
nuclear@0 395 }
nuclear@0 396 }
nuclear@0 397
nuclear@0 398 return 0;
nuclear@0 399
nuclear@0 400 invalid:
nuclear@0 401 fprintf(stderr, "invalid argument: %s\n", argv[i]);
nuclear@0 402 return -1;
nuclear@0 403 }
nuclear@0 404
nuclear@0 405
nuclear@0 406 static void print_perf(void)
nuclear@0 407 {
nuclear@0 408 unsigned long msec, avg_frame_time;
nuclear@0 409 float sec, fps;
nuclear@0 410
nuclear@0 411 msec = get_msec();
nuclear@0 412 if(!num_frm || msec < 1000) {
nuclear@0 413 printf("leaving so soon? (%lu ms)\n", msec);
nuclear@0 414 return;
nuclear@0 415 }
nuclear@0 416
nuclear@0 417 sec = msec / 1000.0f;
nuclear@0 418 fps = (float)num_frm / sec;
nuclear@0 419 avg_frame_time = msec / num_frm;
nuclear@0 420
nuclear@0 421 printf("%lu frames in %.2f seconds\n", num_frm, sec);
nuclear@0 422 printf(" avg. frame time: %lu ms\n", avg_frame_time);
nuclear@0 423 printf(" avg. framerate: %.2f fps\n", fps);
nuclear@0 424 }