Updated volumetric cloud presets and fixed typos in respective documentation.

com.unity.render-pipelines.high-definition/Runtime/Lighting/VolumetricLighting/HDRenderPipeline.VolumetricClouds.cs

@@ -177,7 +177,7 @@ void GetPresetCloudMapValues(VolumetricClouds.CloudPresets preset, out CloudMode
                     cloudModelData.shapeFactor = 0.9f;
                     cloudModelData.shapeScale = 3.0f;
                     cloudModelData.erosionFactor = 0.9f;
-                    cloudModelData.erosionScale = 75.0f;
+                    cloudModelData.erosionScale = 61.4f;
                     cloudModelData.erosionNoise = VolumetricClouds.CloudErosionNoise.Perlin32;
                     return;
                 }
@@ -186,18 +186,18 @@ void GetPresetCloudMapValues(VolumetricClouds.CloudPresets preset, out CloudMode
                     cloudModelData.densityMultiplier = 0.3f;
                     cloudModelData.shapeFactor = 0.9f;
                     cloudModelData.shapeScale = 5.0f;
-                    cloudModelData.erosionFactor = 0.9f;
-                    cloudModelData.erosionScale = 120.0f;
+                    cloudModelData.erosionFactor = 0.95f;
+                    cloudModelData.erosionScale = 87.7f;
                     cloudModelData.erosionNoise = VolumetricClouds.CloudErosionNoise.Perlin32;
                     return;
                 }
                 case VolumetricClouds.CloudPresets.Overcast:
                 {
-                    cloudModelData.densityMultiplier = 0.25f;
-                    cloudModelData.shapeFactor = 0.55f;
-                    cloudModelData.shapeScale = 8.0f;
-                    cloudModelData.erosionFactor = 0.6f;
-                    cloudModelData.erosionScale = 80.0f;
+                    cloudModelData.densityMultiplier = 0.3f;
+                    cloudModelData.shapeFactor = 0.6f;
+                    cloudModelData.shapeScale = 6.0f;
+                    cloudModelData.erosionFactor = 0.75f;
+                    cloudModelData.erosionScale = 87.2f;
                     cloudModelData.erosionNoise = VolumetricClouds.CloudErosionNoise.Perlin32;
                     return;
                 }
@@ -206,8 +206,8 @@ void GetPresetCloudMapValues(VolumetricClouds.CloudPresets preset, out CloudMode
                     cloudModelData.densityMultiplier = 0.3f;
                     cloudModelData.shapeFactor = 0.85f;
                     cloudModelData.shapeScale = 3.0f;
-                    cloudModelData.erosionFactor = 0.95f;
-                    cloudModelData.erosionScale = 60.0f;
+                    cloudModelData.erosionFactor = 0.9f;
+                    cloudModelData.erosionScale = 57.9f;
                     cloudModelData.erosionNoise = VolumetricClouds.CloudErosionNoise.Perlin32;
                     return;
                 }

com.unity.render-pipelines.high-definition/Runtime/Lighting/VolumetricLighting/VolumetricClouds.cs

@@ -187,9 +187,9 @@ public CloudFadeInModeParameter(CloudFadeInMode value, bool overrideState = fals
         public BoolParameter enable = new BoolParameter(false);
 
         /// <summary>
-        /// When enabled, clouds are part of the scene and you can interact with them. This means for example, you can move around the clouds, clouds can appear between the Camera and other GameObjects, and the Camera's clipping planes affects the clouds. When disabled, the clouds are part of the skybox. This mean the clouds and their shadows appear relative to the Camera and always appear behind geometry.
+        /// When enabled, clouds are part of the scene and you can interact with them. This means you can move around and inside the clouds, they can appear between the Camera and other GameObjects, and the Camera's clipping planes affect the clouds. When disabled, the clouds are part of the skybox. This means the clouds and their shadows appear relative to the Camera and always appear behind geometry.
         /// </summary>
-        [Tooltip("When enabled, clouds are part of the scene and you can interact with them. This means for example, you can move around the clouds, clouds can appear between the Camera and other GameObjects, and the Camera's clipping planes affects the clouds. When disabled, the clouds are part of the skybox. This mean the clouds and their shadows appear relative to the Camera and always appear behind geometry.")]
+        [Tooltip("When enabled, clouds are part of the scene and you can interact with them. This means you can move around and inside the clouds, they can appear between the Camera and other GameObjects, and the Camera's clipping planes affect the clouds. When disabled, the clouds are part of the skybox. This means the clouds and their shadows appear relative to the Camera and always appear behind geometry.")]
         public BoolParameter localClouds = new BoolParameter(false);
 
         /// <summary>
@@ -214,7 +214,7 @@ public CloudFadeInModeParameter(CloudFadeInMode value, bool overrideState = fals
         /// Controls the altitude of the bottom of the volumetric clouds volume in meters.
         /// </summary>
         [Tooltip("Controls the altitude of the bottom of the volumetric clouds volume in meters.")]
-        public MinFloatParameter lowestCloudAltitude = new MinFloatParameter(1000, 0.01f);
+        public MinFloatParameter lowestCloudAltitude = new MinFloatParameter(1000.0f, 0.01f);
 
         /// <summary>
         /// Controls the thickness of the volumetric clouds volume in meters.
@@ -241,16 +241,16 @@ public CloudFadeInModeParameter(CloudFadeInMode value, bool overrideState = fals
         public MinFloatParameter fadeInDistance = new MinFloatParameter(0.0f, 0.0f);
 
         /// <summary>
-        /// Controls the number of steps when evaluating the clouds' transmittance.
+        /// Controls the number of steps when evaluating the clouds' transmittance. A higher value may lead to a lower noise level and longer view distance, but at a higher cost.
         /// </summary>
-        [Tooltip("Controls the number of steps when evaluating the clouds' transmittance.")]
-        public ClampedIntParameter numPrimarySteps = new ClampedIntParameter(48, 16, 512);
+        [Tooltip("Controls the number of steps when evaluating the clouds' transmittance. A higher value may lead to a lower noise level and longer view distance, but at a higher cost.")]
+        public ClampedIntParameter numPrimarySteps = new ClampedIntParameter(64, 32, 1024);
 
         /// <summary>
-        /// Controls the number of steps when evaluating the clouds' lighting.
+        /// Controls the number of steps when evaluating the clouds' lighting. A higher value will lead to smoother lighting and improved self-shadowing, but at a higher cost.
         /// </summary>
-        [Tooltip("Controls the number of steps when evaluating the clouds' lighting.")]
-        public ClampedIntParameter numLightSteps = new ClampedIntParameter(8, 6, 32);
+        [Tooltip("Controls the number of steps when evaluating the clouds' lighting. A higher value will lead to smoother lighting and improved self-shadowing, but at a higher cost.")]
+        public ClampedIntParameter numLightSteps = new ClampedIntParameter(6, 1, 32);
 
         /// <summary>
         /// Specifies the cloud map - Coverage (R), Rain (G), Type (B).
@@ -349,11 +349,11 @@ public CloudFadeInModeParameter(CloudFadeInMode value, bool overrideState = fals
         public ColorParameter scatteringTint = new ColorParameter(new Color(0.0f, 0.0f, 0.0f, 1.0f));
 
         /// <summary>
-        /// Controls the amount of local scattering in the clouds. A value of 1 may provide a more powdery aspect.
+        /// Controls the amount of local scattering in the clouds. A higher value may produce a more powdery or diffused aspect.
         /// </summary>
-        [Tooltip("Controls the amount of local scattering in the clouds. A value of 1 may provide a more powdery aspect.")]
+        [Tooltip("Controls the amount of local scattering in the clouds. A higher value may produce a more powdery or diffused aspect.")]
         [AdditionalProperty]
-        public ClampedFloatParameter powderEffectIntensity = new ClampedFloatParameter(0.7f, 0.0f, 1.0f);
+        public ClampedFloatParameter powderEffectIntensity = new ClampedFloatParameter(0.25f, 0.0f, 1.0f);
 
         /// <summary>
         /// Controls the amount of multi-scattering inside the cloud.
@@ -497,7 +497,7 @@ public CloudFadeInModeParameter(CloudFadeInMode value, bool overrideState = fals
         public BoolParameter shadows = new BoolParameter(false);
 
         /// <summary>
-        /// Enable/Disable the volumetric clouds shadow. This will override the cookie of your directional light and the cloud layer shadow (if active).
+        /// Specifies the resolution of the volumetric clouds shadow map.
         /// </summary>
         [Tooltip("Specifies the resolution of the volumetric clouds shadow map.")]
         public CloudShadowResolutionParameter shadowResolution = new CloudShadowResolutionParameter(CloudShadowResolution.Medium256);