Function main

apps/ospTutorial/ospTutorialAsync.c:62–179

    vec2i imgSize);

int main(int argc, const char **argv)
{
#ifdef _WIN32
  int waitForKey = 0;
  CONSOLE_SCREEN_BUFFER_INFO csbi;
  if (GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi)) {
    // detect standalone console: cursor at (0,0)?
    waitForKey = csbi.dwCursorPosition.X == 0 && csbi.dwCursorPosition.Y == 0;
  }
#endif

  // initialize OSPRay; OSPRay parses (and removes) its commandline parameters,
  // e.g. "--osp:debug"
  OSPError init_error = ospInit(&argc, argv);
  if (init_error != OSP_NO_ERROR)
    return init_error;

  vec2i imgSizes[2] = {0};
  imgSizes[0].x = 1024; // width
  imgSizes[0].y = 768; // height

  imgSizes[1].x = 800;
  imgSizes[1].y = 600;

  OSPCamera cameras[2] = {0};
  OSPWorld worlds[2] = {0};
  OSPRenderer renderers[2] = {0};
  OSPFrameBuffer framebuffers[2] = {0};
  buildScene1(
      &cameras[0], &worlds[0], &renderers[0], &framebuffers[0], imgSizes[0]);
  buildScene2(
      &cameras[1], &worlds[1], &renderers[1], &framebuffers[1], imgSizes[1]);

  printf("starting renders...\n");
  OSPFuture futures[2] = {0};
  // render one frame for each scene
  for (int i = 0; i < 2; ++i) {
    futures[i] =
        ospRenderFrame(framebuffers[i], renderers[i], cameras[i], worlds[i]);
  }

  for (int i = 0; i < 2; ++i) {
    int isFinished = ospIsReady(futures[i], OSP_TASK_FINISHED);
    printf("status of 'futures[%i]' is %i\n", i, isFinished);
  }

  // We don't need to wait for them in the order they were started
  for (int i = 1; i >= 0; --i) {
    ospWait(futures[i], OSP_FRAME_FINISHED);
    printf("...done, variance of render %i was %f\n",
        i,
        ospGetVariance(framebuffers[i]));
    ospRelease(futures[i]);
  }

  // access framebuffer and write its content as PPM file
  const uint32_t *fb =
      (uint32_t *)ospMapFrameBuffer(framebuffers[0], OSP_FB_COLOR);