Make noise fx disable when knob is very low.

keijiro · Jan 22, 2015 · ea54bda · ea54bda
1 parent 572972d
commit ea54bda
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Showing 2 changed files with 18 additions and 2 deletions.
diff --git a/Assets/VJ04/Shaders/VJ04 Vfx.shader b/Assets/VJ04/Shaders/VJ04 Vfx.shader
@@ -11,6 +11,8 @@ Shader "Hidden/VJ04 Vfx"
 
  CGINCLUDE
 
+ #pragma multi_compile NOISE_OFF NOISE_ON
+
  #include "UnityCG.cginc"
 
  sampler2D _MainTex;
@@ -27,9 +29,13 @@ Shader "Hidden/VJ04 Vfx"
 
  float4 frag(v2f_img i) : SV_Target 
  {
+ #if NOISE_ON
  // Noise displacement.
  float r = (nrand(float2(i.uv.y * 2, _Time.x)) - 0.5) * 2;
  float d = r * _NoiseDisplace * step(_NoiseThreshold, abs(r));
+ #else
+ float d = 0;
+ #endif
 
  // Source color.
  float4 s = tex2D(_MainTex, i.uv + float2(d, 0));

diff --git a/Assets/VJ04/VJ04Vfx.cs b/Assets/VJ04/VJ04Vfx.cs
@@ -42,10 +42,20 @@ void OnRenderImage(RenderTexture source, RenderTexture destination)
 
  if (_noise > 0.01f || _invert > 0.01f || _whiteout > 0.01f)
  {
- _material.SetFloat("_NoiseThreshold", Mathf.Clamp01(1.0f - _noise * 1.2f));
- _material.SetFloat("_NoiseDisplace", 0.01f + Mathf.Pow(_noise, 3) * 0.1f);
+ if (_noise > 0.01f)
+ {
+ _material.EnableKeyword("NOISE_ON");
+ _material.SetFloat("_NoiseThreshold", Mathf.Clamp01(1.0f - _noise * 1.2f));
+ _material.SetFloat("_NoiseDisplace", 0.01f + Mathf.Pow(_noise, 3) * 0.1f);
+ }
+ else
+ {
+ _material.DisableKeyword("NOISE_ON");
+ }
+
  _material.SetFloat("_Invert", _invert);
  _material.SetFloat("_Whiteout", _whiteout);
+
  Graphics.Blit(source, destination, _material);
  }
  else