diff --git a/wtracer.cpp b/wtracer.cpp
index fa40e3b..add0793 100644
--- a/wtracer.cpp
+++ b/wtracer.cpp
@@ -84,15 +84,6 @@ Hittable_list setup_random_scene(const int sph_i) {
     return world;
 }
 
-struct render_params {
-    int image_width;
-    int image_height;
-    int samples_per_pixel;
-    int max_depth;
-    Hittable_list& world;
-    Camera& cam;
-};
-
 struct render_tile {
     int start_x;
     int start_y;
@@ -100,41 +91,6 @@ struct render_tile {
     int end_y;
 };
 
-void split_line(const int& line_length, int& start, int& end) {
-#ifdef _OPENMP
-    const int line_length_thread = static_cast<int>(line_length/omp_get_num_threads());
-    start = omp_get_thread_num() * line_length_thread;
-    end = std::min((omp_get_thread_num()+1) * line_length_thread, line_length);
-#else
-    start = 0;
-    end = line_length;
-#endif
-}
-
-void render(boost::lockfree::queue<render_tile>& queue,
-        std::atomic<int>& queue_counter,
-        const render_params& params, std::vector<Color>& image) {
-    render_tile rt;
-    while (queue.pop(rt)) {
-        --queue_counter;
-        int qc = queue_counter;
-        printf("\rTiles remaining: %4d", qc);
-        std::cout << std::flush;
-        for (int i = rt.start_x; i<rt.end_x; ++i) {
-            for (int j = rt.start_y; j<rt.end_y; ++j) {
-                Color pixel_color(0, 0, 0);
-                for (int s = 0; s<params.samples_per_pixel; ++s) {
-                    auto u = double(j + random_double(-0.5, 0.5)) / (params.image_width - 1);
-                    auto v = double(i + random_double(-0.5, 0.5)) / (params.image_height - 1);
-                    Ray r = params.cam.get_ray(u, v);
-                    pixel_color += ray_color(r, params.world, params.max_depth);
-                }
-                image[i*params.image_width+j] = pixel_color;
-            }
-        }
-    }
-}
-
 int main() {
     const auto aspect_ratio = 16.0 / 9.0;
     //const int image_width = 1920;
@@ -165,15 +121,6 @@ int main() {
 
     Camera cam(lookfrom, lookat, vup, 20, aspect_ratio, aperture, dist_to_focus);
 
-    render_params params = {
-        image_width,
-        image_height,
-        samples_per_pixel,
-        max_depth,
-        world,
-        cam,
-    };
-
     std::atomic<int> queue_counter;
     boost::lockfree::queue<render_tile> queue(0);
 
@@ -194,7 +141,25 @@ int main() {
 
     #pragma omp parallel
     {
-        render(queue, queue_counter, params, image);
+        render_tile rt;
+        while (queue.pop(rt)) {
+            --queue_counter;
+            int qc = queue_counter;
+            printf("\rTiles remaining: %4d", qc);
+            std::cout << std::flush;
+            for (int i = rt.start_x; i<rt.end_x; ++i) {
+                for (int j = rt.start_y; j<rt.end_y; ++j) {
+                    Color pixel_color(0, 0, 0);
+                    for (int s = 0; s<samples_per_pixel; ++s) {
+                        auto u = double(j + random_double(-0.5, 0.5)) / (image_width - 1);
+                        auto v = double(i + random_double(-0.5, 0.5)) / (image_height - 1);
+                        Ray r = cam.get_ray(u, v);
+                        pixel_color += ray_color(r, world, max_depth);
+                    }
+                    image[i*image_width+j] = pixel_color;
+                }
+            }
+        }
     }
 
     std::cerr << "\nAssembling image.\n";