diff --git a/engine/scene.py b/engine/scene.py
index a139a66..e67ad94 100644
--- a/engine/scene.py
+++ b/engine/scene.py
@@ -74,13 +74,14 @@ def blue(self):
 
 
 class Material(LoadableObject):
-    def __init__(self, color: Color, roughness: float, scene_loader, transparent: bool = False, optical_density: float = 1, dispersion_coefficient: float = 0.01):
+    def __init__(self, color: Color, roughness: float, scene_loader, transparent: bool = False, optical_density: float = 1, dispersion_coefficient: float = 0.01, is_light: bool = False):
         super().__init__()
         self.color = color
         self.roughness = roughness
         self.transparent = transparent
         self.optical_density = optical_density
         self.dispersion_coefficient = dispersion_coefficient
+        self.is_light = is_light
         self.index = scene_loader.new_material_index()
 
     @typing.override
@@ -91,7 +92,7 @@ def as_array(self):
             self.optical_density,
             self.transparent,
             self.dispersion_coefficient,
-            None
+            self.is_light,
         ]
         return res
 
diff --git a/shaders/render.frag b/shaders/render.frag
index 526a650..7a7961c 100644
--- a/shaders/render.frag
+++ b/shaders/render.frag
@@ -33,6 +33,7 @@ struct Material {
     float opticalDensity;
     bool transparent;
     float dispersionCoefficient;
+    bool is_light;
 };
 
 struct Sphere {
@@ -316,9 +317,14 @@ float castRay(Ray ray) {
             return res * castRayWithSky(ray);
         }
 
+        res *= materials[material].color[ray.color];
+
+        if (materials[material].is_light) {
+            return res;
+        }
+
         vec3 refvector = reflectOrRefract(ray, materials[material], refl.normal);
         ray = Ray(refl.intersection, refvector, ray.color, ray.opticalDensity, ray.isInside);
-        res *= materials[material].color[ray.color];
     }
 
     return res;