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#include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glut.h>
#include "ray.h"
static int threaded = 1;
static int viewport_width, viewport_height;
static int
init(int argc, char **argv, int w, int h) {
glutInit(&argc, argv);
glutInitWindowPosition(0, 0);
glutInitWindowSize(w, h);
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
glutCreateWindow(argv[0]);
glDepthMask(0);
glDisable(GL_DEPTH_TEST);
glDisable(GL_BLEND);
return 0;
}
static void
display(void) {
static int count = 0;
++count;
if(count > 10000)
exit(0);
float time = (float)glutGet(GLUT_ELAPSED_TIME) / 1000;
unsigned char* buffer = calloc(viewport_width * viewport_height, 4);
trace_scene(time, viewport_width, viewport_height, buffer, threaded);
glClear(GL_COLOR_BUFFER_BIT);
glRasterPos2d(-1.0, -1.0);
glDrawPixels(viewport_width, viewport_height, GL_BGRA, GL_UNSIGNED_BYTE, buffer);
free(buffer);
glutSwapBuffers();
}
static void
reshape(int w, int h) {
viewport_width = w;
viewport_height = h;
glViewport(0, 0, w, h);
}
static void
keyboard(unsigned char key, int x, int y) {
switch(key) {
case 27:
exit(EXIT_SUCCESS);
break;
case 't':
threaded = !threaded;
break;
}
}
int
main(int argc, char **argv) {
if (init(argc, argv, 800, 600))
return EXIT_FAILURE;
glutDisplayFunc(display);
glutIdleFunc(display);
glutReshapeFunc(reshape);
glutKeyboardFunc(keyboard);
glutMainLoop();
return EXIT_SUCCESS;
}
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