Bring back circular rendering

game/src/chunk/chunkman.c

@@ -117,6 +117,12 @@ chunkman_tick (vec3 position)
     {
       for (int x = cx - render_distance - 1; x <= cx + render_distance + 1; ++x)
         {
+	  /* Check in a circle instead of a square. */
+	  if ((x - cx) * (x - cx) + (z - cz) * (z - cz) > (render_distance+1)*(render_distance+1))
+	    {
+	      continue;
+	    }
+	  
 	  uint64_t now = SDL_GetPerformanceCounter ();
 	  elapsed_us = (double) (now - start) * 1000000.0 / (double) freq;
 	  
@@ -136,6 +142,11 @@ chunkman_tick (vec3 position)
     {
       for (int x = cx - render_distance; x <= cx + render_distance; ++x)
         {
+	  if ((x - cx) * (x - cx) + (z - cz) * (z - cz) > render_distance*render_distance)
+	  {
+	    continue;
+	  }
+	  
 	  uint64_t now = SDL_GetPerformanceCounter ();
 	  elapsed_us = (double) (now - start) * 1000000.0 / (double) freq;
 
@@ -148,9 +159,9 @@ chunkman_tick (vec3 position)
 	    {
 	      chunkman_generate_ChunkMesh_at (x, z);
 	    }
-	}
     }
 }
+}
 
 void
 chunkman_render (vec3 position, vec4 planes[6])
@@ -181,6 +192,11 @@ chunkman_render (vec3 position, vec4 planes[6])
     {
       for (int x = cx - render_distance; x <= cx + render_distance; ++x)
 	{
+	  if ((x - cx) * (x - cx) + (z - cz) * (z - cz) > render_distance*render_distance)
+	  {
+	    continue;
+	  }
+	  
 	  ChunkMesh *mesh = chunkman_get_ChunkMesh_at (x, z);
 	  if (mesh != NULL)
 	    {
@@ -206,10 +222,10 @@ chunkman_render (vec3 position, vec4 planes[6])
 	      ChunkMesh_render (mesh, flags_get ("wireframe_enabled"));
 	      n_frame_chunks++;
 	    }
-	}
     }
+}
 
-  bound = false;
+bound = false;
 }
 
 Chunk *

game/src/graphics.c

@@ -4,7 +4,7 @@ extern vec3 camera_position;
 extern int last_time;
 
 SDL_Window *sdl_window;
-int render_distance = 1;
+int render_distance = 2;
 
 static SDL_GLContext gl_context;
 
@@ -119,6 +119,7 @@ graphics_render ()
       avg_elapsed = 0;
       avg_counter = 0;
       last_check_perf = now;
+      INFO ("Dynamic render distance check: render distance %d, average ms: %.2f", render_distance, avg / 10000.0);
     }
 }