2 files changed, 2 insertions, 12 deletions
diff --git a/math.cginc b/math.cginc
index 5803be5..fa38553 100755
--- a/math.cginc
+++ b/math.cginc
@@ -166,7 +166,8 @@ float3 domain_warp_procedural(float3 uvw, float strength,
   float g = 1;
 
   for (uint ii = 0; ii < octaves; ++ii) {
-    noise += value_noise3(uvw + noise * strength) * g;
+    float3 vnoise = value_noise3(uvw + (noise * 2.0 - 1.0) * strength);
+    noise += vnoise * g;
     uvw *= lacunarity;
     g *= gain;
   }
diff --git a/pbr.cginc b/pbr.cginc
index dac9e1f..47ef00c 100755
--- a/pbr.cginc
+++ b/pbr.cginc
@@ -132,19 +132,8 @@ void apply_marble(float3 world_pos, inout float3 albedo) {
 
   uvw += offset;
 
-#if 1
   float3 noise = domain_warp_procedural(uvw, _Marble_Strength,
       _Marble_Octaves, _Marble_Lacunarity, _Marble_Gain);
-#elif 1
-  float3 noise = hash31_fast(uvw*32);
-#elif 0
-  float3 noise = value_noise3(uvw);
-#elif 0
-  float3 noise = value_noise_3d_tex(_Marble_Noise, trilinear_repeat_s, uvw);
-#else
-  float3 noise = domain_warp_3d_tex(_Marble_Noise, trilinear_repeat_s, uvw,
-      _Marble_Strength, _Marble_Octaves, _Marble_Lacunarity, _Marble_Gain);
-#endif
 
   noise = _Marble_Post_Ramp.Sample(linear_clamp_s, float2(noise.x, 0));