Function storeEXR

tutorials/common/image/exr.cpp:51–69

! store PFM file to disk */

  /*! store PFM file to disk */
  void storeEXR(const Ref<Image>& img, const FileName& fileName)
  {
    std::vector<Col3f> rgb(img->width * img->height);
    for (size_t y=0; y<img->height; ++y) {
        for (size_t x=0; x<img->width; ++x) {
            Color4 c = img->get(x, y);
            rgb[y * img->width + x] = Col3f(c.r, c.g, c.b);
        }
    }
    const char* err = NULL;
    int ret = SaveEXR((float*)rgb.data(), img->width, img->height, 3, 0, fileName.str().c_str(), &err);
    if (ret != TINYEXR_SUCCESS) {
      if (err) {
        std::cerr << "ERR: " << err;
        FreeEXRErrorMessage(err);
      }
      THROW_RUNTIME_ERROR("Could not save image " + fileName.str())
    }
  }
}