sync capture type with preferences

Assets/Util/SpectrumShaderBinder.cs

@@ -37,6 +37,7 @@ public class SpectrumShaderBinder : MonoBehaviour
     private void InitialiseTexture() {
         Debug.Log("Reinitialising spectrum texture...");
         _texture = new Texture2D(source.SpectrumSize, 1, TextureFormat.RFloat, false);
+        _texture.wrapMode = TextureWrapMode.Clamp;
         _colorCache = new Color[source.SpectrumSize];
         _texture.name = $"AudioSpectrum{source.SpectrumSize}";
     }
@@ -62,13 +63,13 @@ public class SpectrumShaderBinder : MonoBehaviour
         if (_texture == null) InitialiseTexture();
 
         var spectrumData = GetSpectrumData();
+        if (spectrumData == null) return;
 
         for (int i = 0; i < source.SpectrumSize; i++) {
             _colorCache[i] = new Color(spectrumData[i], 0, 0, 0);
         }
 
         _texture.SetPixels(_colorCache);
-        _texture.wrapMode = TextureWrapMode.Clamp;
         _texture.Apply();
     }