clray

annotate src/clray.cc @ 40:1bcbb53b3505

find changesets by author, revision, files, or words in the commit message
segfault on exit?
author John Tsiombikas <nuclear@member.fsf.org>
date Fri, 27 Aug 2010 19:00:14 +0100
parents 980bc07be868
children 057b8575a1c1
rev   line source
nuclear@0 1 #include <stdio.h>
nuclear@3 2 #include <stdlib.h>
nuclear@2 3 #include <string.h>
nuclear@27 4 #include <ctype.h>
nuclear@2 5 #include <errno.h>
nuclear@3 6 #ifndef __APPLE__
nuclear@3 7 #include <GL/glut.h>
nuclear@3 8 #else
nuclear@3 9 #include <GLUT/glut.h>
nuclear@3 10 #endif
nuclear@3 11 #include "rt.h"
nuclear@12 12 #include "matrix.h"
nuclear@22 13 #include "scene.h"
nuclear@39 14 #include "ocl.h"
nuclear@0 15
nuclear@3 16 void cleanup();
nuclear@3 17 void disp();
nuclear@3 18 void reshape(int x, int y);
nuclear@3 19 void keyb(unsigned char key, int x, int y);
nuclear@3 20 void mouse(int bn, int status, int x, int y);
nuclear@3 21 void motion(int x, int y);
nuclear@2 22 bool write_ppm(const char *fname, float *fb, int xsz, int ysz);
nuclear@2 23
nuclear@3 24 static int xsz, ysz;
nuclear@3 25 static bool need_update = true;
nuclear@3 26
nuclear@8 27 static float cam_theta, cam_phi = 25.0;
nuclear@8 28 static float cam_dist = 10.0;
nuclear@8 29
nuclear@32 30 static bool dbg_glrender = false;
nuclear@27 31 static bool dbg_show_kdtree = false;
nuclear@27 32 static bool dbg_show_obj = true;
nuclear@13 33
nuclear@13 34 static Scene scn;
nuclear@39 35 static unsigned int tex;
nuclear@12 36
nuclear@3 37 int main(int argc, char **argv)
nuclear@0 38 {
nuclear@3 39 glutInitWindowSize(800, 600);
nuclear@3 40 glutInit(&argc, argv);
nuclear@13 41
nuclear@13 42 int loaded = 0;
nuclear@13 43 for(int i=1; i<argc; i++) {
nuclear@27 44 if(argv[i][0] == '-' && argv[i][2] == 0) {
nuclear@27 45 switch(argv[i][1]) {
nuclear@27 46 case 'i':
nuclear@27 47 if(!argv[++i] || !isdigit(argv[i][0])) {
nuclear@27 48 fprintf(stderr, "-i must be followed by the intersection cost\n");
nuclear@27 49 return 1;
nuclear@27 50 }
nuclear@27 51
nuclear@27 52 set_accel_param(ACCEL_PARAM_COST_INTERSECT, atoi(argv[i]));
nuclear@27 53 break;
nuclear@27 54
nuclear@27 55 case 't':
nuclear@27 56 if(!argv[++i] || !isdigit(argv[i][0])) {
nuclear@27 57 fprintf(stderr, "-t must be followed by the traversal cost\n");
nuclear@27 58 return 1;
nuclear@27 59 }
nuclear@27 60
nuclear@27 61 set_accel_param(ACCEL_PARAM_COST_TRAVERSE, atoi(argv[i]));
nuclear@27 62 break;
nuclear@27 63
nuclear@27 64 case 'c':
nuclear@27 65 if(!argv[++i] || !isdigit(argv[i][0])) {
nuclear@27 66 fprintf(stderr, "-c must be followed by the max number of items per leaf node\n");
nuclear@27 67 return 1;
nuclear@27 68 }
nuclear@27 69
nuclear@27 70 set_accel_param(ACCEL_PARAM_MAX_NODE_ITEMS, atoi(argv[i]));
nuclear@27 71 break;
nuclear@27 72
nuclear@27 73 default:
nuclear@27 74 fprintf(stderr, "unrecognized option: %s\n", argv[i]);
nuclear@27 75 return 1;
nuclear@27 76 }
nuclear@27 77 } else {
nuclear@27 78 if(!scn.load(argv[i])) {
nuclear@27 79 fprintf(stderr, "failed to load scene: %s\n", argv[i]);
nuclear@27 80 return false;
nuclear@27 81 }
nuclear@27 82 loaded++;
nuclear@13 83 }
nuclear@13 84 }
nuclear@13 85
nuclear@13 86 if(!loaded) {
nuclear@13 87 fprintf(stderr, "you must specify a scene file to load\n");
nuclear@13 88 return false;
nuclear@13 89 }
nuclear@13 90 if(!scn.get_num_faces()) {
nuclear@13 91 fprintf(stderr, "didn't load any polygons\n");
nuclear@13 92 return false;
nuclear@13 93 }
nuclear@13 94
nuclear@18 95 glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);
nuclear@3 96 glutCreateWindow("OpenCL Raytracer");
nuclear@0 97
nuclear@3 98 xsz = glutGet(GLUT_WINDOW_WIDTH);
nuclear@3 99 ysz = glutGet(GLUT_WINDOW_HEIGHT);
nuclear@2 100
nuclear@3 101 glutDisplayFunc(disp);
nuclear@3 102 glutReshapeFunc(reshape);
nuclear@3 103 glutKeyboardFunc(keyb);
nuclear@3 104 glutMouseFunc(mouse);
nuclear@3 105 glutMotionFunc(motion);
nuclear@0 106
nuclear@32 107 unsigned int *test_pattern = new unsigned int[xsz * ysz];
nuclear@32 108 for(int i=0; i<ysz; i++) {
nuclear@32 109 for(int j=0; j<xsz; j++) {
nuclear@32 110 test_pattern[i * xsz + j] = ((i >> 4) & 1) == ((j >> 4) & 1) ? 0xff0000 : 0xff00;
nuclear@32 111 }
nuclear@32 112 }
nuclear@27 113
nuclear@39 114 glGenTextures(1, &tex);
nuclear@39 115 glBindTexture(GL_TEXTURE_2D, tex);
nuclear@3 116 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
nuclear@3 117 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
nuclear@3 118 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
nuclear@3 119 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
nuclear@39 120 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F_ARB, xsz, ysz, 0, GL_RGBA, GL_UNSIGNED_BYTE, test_pattern);
nuclear@32 121 delete [] test_pattern;
nuclear@2 122
nuclear@39 123 if(!init_opencl()) {
nuclear@39 124 return 1;
nuclear@39 125 }
nuclear@39 126
nuclear@39 127 if(!init_renderer(xsz, ysz, &scn, tex)) {
nuclear@39 128 return 1;
nuclear@39 129 }
nuclear@39 130 atexit(cleanup);
nuclear@39 131
nuclear@3 132 glutMainLoop();
nuclear@0 133 return 0;
nuclear@0 134 }
nuclear@2 135
nuclear@3 136 void cleanup()
nuclear@2 137 {
nuclear@40 138 printf("destroying renderer...\n");
nuclear@3 139 destroy_renderer();
nuclear@40 140
nuclear@40 141 printf("shutting down OpenCL...\n");
nuclear@40 142 destroy_opencl();
nuclear@40 143
nuclear@40 144 printf("done cleaning up\n");
nuclear@3 145 }
nuclear@2 146
nuclear@12 147 static Matrix4x4 mat, inv_mat, inv_trans;
nuclear@12 148
nuclear@3 149 void disp()
nuclear@3 150 {
nuclear@8 151 glMatrixMode(GL_MODELVIEW);
nuclear@8 152 glLoadIdentity();
nuclear@8 153
nuclear@3 154 if(need_update) {
nuclear@12 155 glPushMatrix();
nuclear@12 156 glRotatef(-cam_theta, 0, 1, 0);
nuclear@12 157 glRotatef(-cam_phi, 1, 0, 0);
nuclear@12 158 glTranslatef(0, 0, cam_dist);
nuclear@8 159
nuclear@12 160 glGetFloatv(GL_MODELVIEW_MATRIX, mat.m);
nuclear@8 161
nuclear@12 162 inv_mat = mat;
nuclear@12 163 inv_mat.invert();
nuclear@12 164
nuclear@12 165 /*inv_trans = inv_mat;
nuclear@12 166 inv_trans.transpose();*/
nuclear@12 167 inv_trans = mat;
nuclear@12 168 inv_trans.m[3] = inv_trans.m[7] = inv_trans.m[11] = 0.0;
nuclear@12 169 inv_trans.m[12] = inv_trans.m[13] = inv_trans.m[14] = 0.0;
nuclear@12 170 inv_trans.m[15] = 1.0;
nuclear@12 171
nuclear@12 172 set_xform(mat.m, inv_trans.m);
nuclear@8 173 glPopMatrix();
nuclear@8 174
nuclear@13 175 if(!dbg_glrender) {
nuclear@13 176 if(!render()) {
nuclear@13 177 exit(1);
nuclear@13 178 }
nuclear@13 179 need_update = false;
nuclear@12 180 }
nuclear@3 181 }
nuclear@2 182
nuclear@12 183 if(dbg_glrender) {
nuclear@12 184 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
nuclear@12 185 glLoadMatrixf(inv_mat.m);
nuclear@27 186 dbg_render_gl(&scn, dbg_show_kdtree, dbg_show_obj);
nuclear@12 187 } else {
nuclear@12 188 glEnable(GL_TEXTURE_2D);
nuclear@22 189 glDisable(GL_LIGHTING);
nuclear@2 190
nuclear@12 191 glBegin(GL_QUADS);
nuclear@12 192 glColor3f(1, 1, 1);
nuclear@12 193 glTexCoord2f(0, 1); glVertex2f(-1, -1);
nuclear@12 194 glTexCoord2f(1, 1); glVertex2f(1, -1);
nuclear@12 195 glTexCoord2f(1, 0); glVertex2f(1, 1);
nuclear@12 196 glTexCoord2f(0, 0); glVertex2f(-1, 1);
nuclear@12 197 glEnd();
nuclear@2 198
nuclear@12 199 glDisable(GL_TEXTURE_2D);
nuclear@12 200 }
nuclear@3 201
nuclear@3 202 glutSwapBuffers();
nuclear@3 203 }
nuclear@3 204
nuclear@3 205 void reshape(int x, int y)
nuclear@3 206 {
nuclear@3 207 glViewport(0, 0, x, y);
nuclear@3 208
nuclear@3 209 /* reallocate the framebuffer */
nuclear@3 210 /*delete [] fb;
nuclear@3 211 fb = new float[x * y * 4];
nuclear@3 212 set_framebuffer(fb, x, y);*/
nuclear@3 213 }
nuclear@3 214
nuclear@3 215 void keyb(unsigned char key, int x, int y)
nuclear@3 216 {
nuclear@3 217 switch(key) {
nuclear@3 218 case 27:
nuclear@3 219 exit(0);
nuclear@3 220
nuclear@12 221 case 'r':
nuclear@12 222 need_update = true;
nuclear@12 223 glutPostRedisplay();
nuclear@3 224 break;
nuclear@3 225
nuclear@12 226 case 'd':
nuclear@12 227 dbg_glrender = !dbg_glrender;
nuclear@12 228 if(dbg_glrender) {
nuclear@21 229 printf("Debug OpenGL rendering\n");
nuclear@21 230 } else {
nuclear@21 231 printf("Raytracing\n");
nuclear@12 232 }
nuclear@3 233 glutPostRedisplay();
nuclear@3 234 break;
nuclear@3 235
nuclear@27 236 case 'k':
nuclear@27 237 dbg_show_kdtree = !dbg_show_kdtree;
nuclear@27 238 if(dbg_glrender) {
nuclear@27 239 glutPostRedisplay();
nuclear@27 240 }
nuclear@27 241 break;
nuclear@27 242
nuclear@27 243 case 'o':
nuclear@27 244 dbg_show_obj = !dbg_show_obj;
nuclear@27 245 if(dbg_glrender) {
nuclear@27 246 glutPostRedisplay();
nuclear@27 247 }
nuclear@27 248 break;
nuclear@27 249
nuclear@3 250 default:
nuclear@3 251 break;
nuclear@3 252 }
nuclear@3 253 }
nuclear@3 254
nuclear@8 255 static bool bnstate[32];
nuclear@8 256 static int prev_x, prev_y;
nuclear@8 257
nuclear@3 258 void mouse(int bn, int state, int x, int y)
nuclear@3 259 {
nuclear@8 260 if(state == GLUT_DOWN) {
nuclear@8 261 prev_x = x;
nuclear@8 262 prev_y = y;
nuclear@8 263 bnstate[bn] = true;
nuclear@8 264 } else {
nuclear@8 265 bnstate[bn] = false;
nuclear@8 266 }
nuclear@3 267 }
nuclear@3 268
nuclear@8 269 #define ROT_SCALE 0.5
nuclear@8 270 #define PAN_SCALE 0.1
nuclear@8 271
nuclear@3 272 void motion(int x, int y)
nuclear@3 273 {
nuclear@8 274 int dx = x - prev_x;
nuclear@8 275 int dy = y - prev_y;
nuclear@8 276 prev_x = x;
nuclear@8 277 prev_y = y;
nuclear@8 278
nuclear@8 279 if(bnstate[0]) {
nuclear@8 280 cam_theta += dx * ROT_SCALE;
nuclear@8 281 cam_phi += dy * ROT_SCALE;
nuclear@8 282
nuclear@12 283 if(cam_phi < -89) cam_phi = -89;
nuclear@8 284 if(cam_phi > 89) cam_phi = 89;
nuclear@8 285
nuclear@8 286 need_update = true;
nuclear@8 287 glutPostRedisplay();
nuclear@8 288 }
nuclear@8 289 if(bnstate[2]) {
nuclear@8 290 cam_dist += dy * PAN_SCALE;
nuclear@8 291 if(cam_dist < 0) cam_dist = 0;
nuclear@8 292
nuclear@8 293 need_update = true;
nuclear@8 294 glutPostRedisplay();
nuclear@8 295 }
nuclear@2 296 }
nuclear@2 297
nuclear@2 298 bool write_ppm(const char *fname, float *fb, int xsz, int ysz)
nuclear@2 299 {
nuclear@2 300 FILE *fp;
nuclear@2 301
nuclear@2 302 if(!(fp = fopen(fname, "wb"))) {
nuclear@2 303 fprintf(stderr, "write_ppm: failed to open file %s for writing: %s\n", fname, strerror(errno));
nuclear@2 304 return false;
nuclear@2 305 }
nuclear@2 306 fprintf(fp, "P6\n%d %d\n255\n", xsz, ysz);
nuclear@2 307
nuclear@2 308 for(int i=0; i<xsz * ysz * 4; i++) {
nuclear@2 309 if(i % 4 == 3) continue;
nuclear@2 310
nuclear@2 311 unsigned char c = (unsigned char)(fb[i] * 255.0);
nuclear@2 312 fputc(c, fp);
nuclear@2 313 }
nuclear@2 314 fclose(fp);
nuclear@2 315 return true;
nuclear@2 316 }