update

assets/shaders/phong-solid.fragment.glsl

@@ -25,6 +25,6 @@ void main() {
     float spec = pow(max(dot(view_direction_norm, reflect_dir), 0.0), 32);
     vec3 specular = specular_strength * spec * light_color;
 
-    vec3 result = (ambient + diffuse + specular) * solid_color;
+    vec3 result = specular * (solid_color + 2 * light_color) / 2 + (ambient + diffuse) * solid_color;
     frag_color = vec4(result, 1.0);
 }

src/main.cpp

@@ -338,7 +338,7 @@ int main_gfx() {
     big_frame.cam->pos = glm::vec3(0.0f, 4.0f, 4.0f);
     camera_look_at(big_frame.cam, 0.0f, 0.0f, 0.0f);
 
-    glm::vec3 light_pos = glm::vec3(4.0f, 12.0f, 2.0f);
+    glm::vec3 light_pos = glm::vec3(-15.0f, 10.0f, 6.0f);
 
     glUseProgram(app_state.active_shader->prog_id);
     glUniform3fv(