diff --git a/res/sh/shade.hlsl b/res/sh/shade.hlsl
index b25a0edc..6f883c90 100644
--- a/res/sh/shade.hlsl
+++ b/res/sh/shade.hlsl
@@ -25,11 +25,11 @@ struct cs_input {
  * Lighting
  * ========================== */
 
-#define SAMPLES 4
+#define SAMPLES 2
 #define MARCHES 16
 #define AMBIENT float4(0, 0, 0, 0)
 
-float rand_float_from_float2(float2 pos) {
+float rand_angle(uint2 pos, uint ray_index) {
     Texture3D<uint> noise_tex = g_noise_textures[SH_BLUE_NOISE_TEX_ID];
 
     // pos += uint2(g_constants.frame_seed.x % g_constants.tex_width, g_constants.frame_seed.x % g_constants.tex_height);
@@ -37,15 +37,15 @@ float rand_float_from_float2(float2 pos) {
     // pos -= g_constants.camera_offset;
 
     uint3 noise_coord = uint3(pos.xy, 0);
-    // noise_coord.xy += g_constants.frame_seed.xy;
+    // noise_coord.xy *= g_constants.frame_seed.xy;
+    noise_coord.z += ray_index;
+    // noise_coord.z += ray_index * noise_coord.x ;
+    // noise_coord.z += g_constants.frame_seed.x;
     // noise_coord.z += g_constants.frame_index;
-    // noise_coord.z += g_constants.frame_index;
-
-
 
     uint3 noise_size = uint3(SH_BLUE_NOISE_TEX_WIDTH, SH_BLUE_NOISE_TEX_HEIGHT, SH_BLUE_NOISE_TEX_DEPTH);
     uint noise = noise_tex[noise_coord % noise_size];
-    return (float)noise / (float)0xFFFF;
+    return ((float)noise / (float)0xFFFF) * TAU;
 }
 
 INLINE float4 get_light_in_dir(uint2 ray_start, float2 ray_dir)
@@ -79,12 +79,7 @@ INLINE float4 get_light_at_pos(uint2 pos)
 {
     float4 result = 0;
     for (uint i = 0; i < SAMPLES; ++i) {
-        float angle = ((((float)i + rand_float_from_float2((float2)pos + (float)i)) / SAMPLES)) * TAU;
-        // float angle = (rand_float_from_float2(pos)) * TAU;
-
-        // float angle = (rand_float_from_float2(pos)) * TAU;
-        // float angle = (((float)i / SAMPLES)) * TAU;
-        // float angle = (rand_float_from_float2(pos)) * TAU;
+        float angle = rand_angle(pos, i);
         float2 dir = float2(cos(angle), sin(angle));
         float4 light_in_dir = get_light_in_dir(pos, dir);
         result += light_in_dir;