diff --git a/scenes/colored_light2.rt b/scenes/colored_light2.rt
new file mode 100644
index 0000000..84a74cf
--- /dev/null
+++ b/scenes/colored_light2.rt
@@ -0,0 +1,42 @@
+CAM     -1.96358 -1.9992 7.56063        1.4 -70.8       0.142 4.412 90  10
+
+# TEX skymap.hdr
+# MAT	255 255 255		1.0		0.0 0.0 LAM 0 // 0
+# sp	0 2 0	150	0
+
+MAT	90 200 250		1.0		0.0 0.0 // 0
+MAT	140 160 250		1.0		0.0 0.0 // 1
+MAT	200 100 250		1.0		0.0 0.0 // 2
+MAT	240 70 230		1.0		0.0 0.0 // 3
+MAT	250 130 180		1.0		0.0 0.0 // 4
+MAT	250 180 120		1.0		0.0 0.0 // 5
+MAT	240 230 60		1.0		0.0 0.0 // 6
+MAT	200 250 100		1.0		0.0 0.0 // 7
+MAT	150 250 150		1.0		0.0 0.0 // 8
+MAT	90 250 200		1.0		0.0 0.0 // 9
+
+MAT	200 200 200		0.0		0.0 0.0 // 10
+MAT	200 200 200		0.0		1.25 0.0 DIE -1 // 11
+
+qu	-5 -5 0.01		0 10 0		0.5 0 0		1	0
+qu	-4 -5 0.01		0 10 0		0.5 0 0		1	1
+qu	-3 -5 0.01		0 10 0		0.5 0 0		1	2
+qu	-2 -5 0.01		0 10 0		0.5 0 0		1	3
+qu	-1 -5 0.01		0 10 0		0.5 0 0		1	4
+qu	0 -5 0.01		0 10 0		0.5 0 0		1	5
+qu	1 -5 0.01		0 10 0		0.5 0 0		1	6
+qu	2 -5 0.01		0 10 0		0.5 0 0		1	7
+qu	3 -5 0.01		0 10 0		0.5 0 0		1	8
+qu	4 -5 0.01		0 10 0		0.5 0 0		1	9
+
+cu	0 0 5	10 10 10		10
+# sp	0 -2 5	3	11
+
+OBJ	obj/Dragon_800K.obj	0 -2.75 7.5		30		0 0 0		11
+
+
+
+
+
+
+
diff --git a/scenes/sponza.rt b/scenes/sponza.rt
index a6fa028..b537b35 100644
--- a/scenes/sponza.rt
+++ b/scenes/sponza.rt
@@ -1,7 +1,4 @@
-#CAM     18.9143 1.24843 -5.48951        8.5 -200        0.04 14.829 45 2
-#CAM		-30.2582 13.4046 6.92082		9.69999 -61.2004 	0.04 14.829 45	2
-#CAM	3.05548 13.1494 -6.01793	9.44218 18.2879 	0.00 14.829 45	2
-CAM	17.5213 11.4943 -1.28202	-36.7578 -904.112 	0 14.829 45	2
+CAM     18.9143 1.24843 -5.48951        8.5 -200        0.04 14.829 45 5
 
 MAT	255 255 255		0.0		1.0 0.5 // dragon 0 
 MAT	255 220 50		0.0		1.0 0.5 // dragon 1 
diff --git a/shaders/denoising.glsl b/shaders/denoising.glsl
index 5cde300..b0d0c71 100644
--- a/shaders/denoising.glsl
+++ b/shaders/denoising.glsl
@@ -34,7 +34,6 @@ void main()
     float totalWeight = 0.;
 	vec4 light = vec4(vec3(0.), 1.0);
 
-
 	for (int x = -2; x <= 2; x++)
 	{
 		for (int y = -2; y <= 2; y++)
@@ -72,7 +71,7 @@ void main()
 	if (u_pass == u_pass_count - 1)
 	{
 		vec4 color = light * imageLoad(color_texture, pixel_coords);
-		imageStore(output_texture, pixel_coords, color);
+		imageStore(output_texture, pixel_coords, sqrt(color));
 		return;
 	}
 
diff --git a/shaders/intersect.glsl b/shaders/intersect.glsl
index ddc1fea..a5ba242 100644
--- a/shaders/intersect.glsl
+++ b/shaders/intersect.glsl
@@ -77,7 +77,7 @@ bool intersectTriangle(Ray ray, GPUTriangle obj, out hitInfo hit)
 	vec3 pvec = cross(ray.direction, vertex2);
 	float det = dot(vertex1, pvec);
 
-	if (abs(det) < 1e-8) 
+	if (abs(det) < 1e-10) 
         return (false);
 
 	vec3 tvec = ray.origin - obj.position;
diff --git a/shaders/light.glsl b/shaders/light.glsl
index 4a3f1b8..de5402d 100644
--- a/shaders/light.glsl
+++ b/shaders/light.glsl
@@ -68,24 +68,18 @@ vec3 sampleQuadLight(vec3 position, GPUObject obj, int light_index, GPUMaterial
     return mat.emission * mat.color / (light_dist * light_dist) * pdf;
 }
 
-vec3 sampleLights(vec3 position, inout uint rng_state)
+vec3 sampleLights(in vec3 position, inout uint rng_state)
 {
-	vec3 light = vec3(0.0);
+    int light_list_index = int(floor(randomValue(rng_state) * float(u_lightsNum)));
+    int light_index = lightsIndex[light_list_index];
+
+    GPUObject light_obj = objects[light_index];
+    GPUMaterial lightMat = materials[light_obj.mat_index];
     
-    for (int i = 0; i < u_lightsNum; i++)
-    {
-        int light_index = lightsIndex[i];
-
-        GPUObject obj = objects[light_index];
-        GPUMaterial mat = materials[obj.mat_index];
-
-        if (obj.type == 0)
-            light += sampleSphereLight(position, obj, light_index, mat, rng_state);
-        else if (obj.type == 2)
-            light += sampleQuadLight(position, obj, light_index, mat, rng_state);
-    }
-
-	return (light);
+    if (light_obj.type == 0)
+        return float(u_lightsNum) * sampleSphereLight(position, light_obj, light_index, lightMat, rng_state);
+    else if (light_obj.type == 2)
+        return float(u_lightsNum) * sampleQuadLight(position, light_obj, light_index, lightMat, rng_state);
 }
 
 vec2 getSphereUV(vec3 surfacePoint)
@@ -134,6 +128,7 @@ void    calculateLightColor(GPUMaterial mat, hitInfo hit, inout vec3 color, inou
     {
         color *= mat.color;
         light += mat.emission * mat.color;
-        // light += sampleLights(hit.position, rng_state);
+        // if (mat.emission == 0.0)
+            // light += sampleLights(hit.position, rng_state);
     }
 }
\ No newline at end of file
diff --git a/shaders/raytracing.glsl b/shaders/raytracing.glsl
index 8feb512..afaa8bc 100644
--- a/shaders/raytracing.glsl
+++ b/shaders/raytracing.glsl
@@ -204,6 +204,8 @@ vec3[2] pathtrace(Ray ray, inout uint rng_state)
 		{
 			imageStore(normal_texture, ivec2(gl_GlobalInvocationID.xy), vec4(normalize(hit.normal), 1.0));
 			imageStore(position_texture, ivec2(gl_GlobalInvocationID.xy), vec4(normalize(hit.position), 1.0));
+			// vec4 accum_normal = accumulate(normal_texture, accum_normal, normalize(hit.normal));
+			// vec4 accum_position = accumulate(position_texture, accum_position, normalize(hit.position));
 		}
 
         float p = max(color.r, max(color.g, color.b));
@@ -269,11 +271,10 @@ void main()
 	vec3[2] color_light = pathtrace(ray, rng_state);
 	vec3 color = color_light[0] * color_light[1];
 	
-	vec4 accum_color = accumulate(color_texture, accum_color, sqrt(color_light[0]));
-
+	vec4 accum_color = accumulate(color_texture, accum_color, (color_light[0]));
 	vec4 accum_light = accumulate(light_accum_texture, accum_light, color_light[1]);
-	vec4 final_light = sqrt(accum_light);
-	imageStore(light_texture, pixel_coords, final_light);
+
+	imageStore(light_texture, pixel_coords, accum_light);
 
 	vec4 accum = accumulate(output_accum_texture, accum, color);
 	vec4 final_output_color = sqrt(accum);
diff --git a/srcs/class/Scene.cpp b/srcs/class/Scene.cpp
index c8677fa..bc6dbe0 100644
--- a/srcs/class/Scene.cpp
+++ b/srcs/class/Scene.cpp
@@ -35,9 +35,9 @@ Scene::Scene(std::string &name)
 
 	_gpu_denoise.enabled = 0;
 	_gpu_denoise.pass = 0;
-	_gpu_denoise.c_phi = 0.1f;
-	_gpu_denoise.p_phi = 0.1f;
-	_gpu_denoise.n_phi = 0.1f;
+	_gpu_denoise.c_phi = 0.4f;
+	_gpu_denoise.p_phi = 0.01f;
+	_gpu_denoise.n_phi = 0.01f;
 
 	if (!file.is_open())
 	{