fix

Author: mlavik1

Assets/Scripts/Gradients/SobelGradientComputator.cs

@@ -67,7 +67,7 @@ public override Vector3 ComputeGradient(int x, int y, int z, float minValue, flo
 
             Vector3 gradient = new Vector3(dx, dy, dz);
 
-            float divident = maxRange * 3;
+            float divident = maxRange;
 
             return new Vector3(gradient.x / divident, gradient.y / divident, gradient.z / divident);
         }

Assets/Scripts/VolumeObject/VolumeRenderedObject.cs

@@ -391,7 +391,7 @@ public async Task SetGradientTypeAsync(GradientType gradientType, IProgressHandl
             if (gradientType != this.gradientType)
             {
                 this.gradientType = gradientType;
-                if (this.lightingEnabled)
+                if (NeedsGradients())
                 {
                     await dataset.RegenerateGradientTextureAsync(gradientType, progressHandler);
                     await UpdateMaterialPropertiesAsync();
@@ -533,7 +533,7 @@ private async Task UpdateMaterialPropertiesAsync(IProgressHandler progressHandle
 
             try
             {
-                bool useGradientTexture = tfRenderMode == TFRenderMode.TF2D || renderMode == RenderMode.IsosurfaceRendering || lightingEnabled;
+                bool useGradientTexture = NeedsGradients();
                 Texture3D dataTexture = await dataset.GetDataTextureAsync(progressHandler);
                 Texture3D gradientTexture = useGradientTexture ? await dataset.GetGradientTextureAsync(progressHandler) : null;
                 Texture3D secondaryDataTexture = secondaryDataset ? await secondaryDataset?.GetDataTextureAsync(progressHandler) : null;
@@ -681,5 +681,10 @@ private void EnsureVolumeContainerRef()
                     volumeContainerObject = trans.gameObject;
             }
         }
+
+        private bool NeedsGradients()
+        {
+            return lightingEnabled || tfRenderMode == TFRenderMode.TF2D || renderMode == RenderMode.IsosurfaceRendering;
+        }
     }
 }