Tweakable downsampling. RenderMetaballs refactoring.

Assets/Metaballs/Materials/Blur.mat

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Assets/Metaballs/Materials/Blur.mat.meta

@@ -1,8 +0,0 @@
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Assets/Metaballs/RendererFeatures/RenderMetaballs.cs

@@ -16,10 +16,10 @@ public class RenderMetaballs : ScriptableRendererFeature
         int _metaballRTLargeId;
         int _metaballRTLarge2Id;
         
+        int _downsamplingAmount = 4;
+        
         public Material BlitMaterial;
         public Material BlurMaterial;
-        public Material BlitCopyMaterial;
-        public Material BlitCopyWithDepthMaterial;
         public Material BlitCopyDepthMaterial;
 
         RenderTargetIdentifier _metaballRTSmall;
@@ -31,7 +31,6 @@ public class RenderMetaballs : ScriptableRendererFeature
         RenderQueueType renderQueueType;
         FilteringSettings m_FilteringSettings;
         RenderObjects.CustomCameraSettings m_CameraSettings;
-        string m_ProfilerTag;
         ProfilingSampler m_ProfilingSampler;
 
         public Material overrideMaterial { get; set; }
@@ -42,11 +41,10 @@ public class RenderMetaballs : ScriptableRendererFeature
         RenderStateBlock m_RenderStateBlock;
 
         public RenderMetaballsPass(string profilerTag, RenderPassEvent renderPassEvent, string[] shaderTags,
-            RenderQueueType renderQueueType, int layerMask, RenderObjects.CustomCameraSettings cameraSettings)
+            RenderQueueType renderQueueType, int layerMask, RenderObjects.CustomCameraSettings cameraSettings, int downsamplingAmount)
         {
             profilingSampler = new ProfilingSampler(nameof(RenderObjectsPass));
 
-            m_ProfilerTag = profilerTag;
             m_ProfilingSampler = new ProfilingSampler(profilerTag);
             this.renderPassEvent = renderPassEvent;
             this.renderQueueType = renderQueueType;
@@ -73,9 +71,9 @@ public class RenderMetaballs : ScriptableRendererFeature
             m_RenderStateBlock = new RenderStateBlock(RenderStateMask.Nothing);
             m_CameraSettings = cameraSettings;
 
-            BlitCopyMaterial = new Material(Shader.Find("Hidden/BlitCopy"));
-            BlitCopyWithDepthMaterial = new Material(Shader.Find("Hidden/BlitCopyWithDepth"));
             BlitCopyDepthMaterial = new Material(Shader.Find("Hidden/BlitToDepth"));
+            BlurMaterial = new Material(Shader.Find("Hidden/KawaseBlur"));
+            _downsamplingAmount = downsamplingAmount;
         }
 
         // This method is called before executing the render pass.
@@ -86,8 +84,8 @@ public class RenderMetaballs : ScriptableRendererFeature
         public override void OnCameraSetup(CommandBuffer cmd, ref RenderingData renderingData)
         {
             RenderTextureDescriptor smallBlitTargetDescriptor = renderingData.cameraData.cameraTargetDescriptor;
-            smallBlitTargetDescriptor.width /= 4;
+            smallBlitTargetDescriptor.width /= _downsamplingAmount;
-            smallBlitTargetDescriptor.height /= 4;
+            smallBlitTargetDescriptor.height /= _downsamplingAmount;
             smallBlitTargetDescriptor.colorFormat = RenderTextureFormat.ARGB32;
             
             RenderTextureDescriptor largeBlitTargetDescriptor = renderingData.cameraData.cameraTargetDescriptor;
@@ -119,13 +117,6 @@ public class RenderMetaballs : ScriptableRendererFeature
         // You don't have to call ScriptableRenderContext.submit, the render pipeline will call it at specific points in the pipeline.
         public override void Execute(ScriptableRenderContext context, ref RenderingData renderingData)
         {
-            /*
-            CommandBuffer cmd = CommandBufferPool.Get();
-            Blit(cmd, _source, _destination, BlitMaterial);
-            context.ExecuteCommandBuffer(cmd);
-            CommandBufferPool.Release(cmd);
-            */
-
             SortingCriteria sortingCriteria = (renderQueueType == RenderQueueType.Transparent)
                 ? SortingCriteria.CommonTransparent
                 : renderingData.cameraData.defaultOpaqueSortFlags;
@@ -199,19 +190,18 @@ public class RenderMetaballs : ScriptableRendererFeature
     }
 
     public Material blitMaterial;
-    public Material blurMaterial;
     RenderMetaballsPass _scriptableMetaballsPass;
     public RenderObjects.RenderObjectsSettings renderObjectsSettings = new RenderObjects.RenderObjectsSettings();
+    [Range(1, 16)] public int downsamplingAmount;
 
     /// <inheritdoc/>
     public override void Create()
     {
         RenderObjects.FilterSettings filter = renderObjectsSettings.filterSettings;
         _scriptableMetaballsPass = new RenderMetaballsPass(renderObjectsSettings.passTag, renderObjectsSettings.Event,
-            filter.PassNames, filter.RenderQueueType, filter.LayerMask, renderObjectsSettings.cameraSettings)
+            filter.PassNames, filter.RenderQueueType, filter.LayerMask, renderObjectsSettings.cameraSettings, downsamplingAmount)
         {
             BlitMaterial = blitMaterial,
-            BlurMaterial = blurMaterial
         };
     }
 

Assets/Metaballs/Shaders/KawaseBlur.shader

@@ -1,4 +1,4 @@
-Shader "Custom/KawaseBlur"
+Shader "Hidden/KawaseBlur"
 {
     Properties
     {

Assets/Scenes/MixAndJam.unity

@@ -11403,7 +11403,7 @@ Transform:
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   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 869074592}
-  m_LocalRotation: {x: 0.09112676, y: 0.03213698, z: -0.00294232, w: 0.99531627}
+  m_LocalRotation: {x: 0.09112655, y: 0.032211166, z: -0.0029491126, w: 0.9953139}
   m_LocalPosition: {x: 0, y: 0, z: 0}
   m_LocalScale: {x: 1, y: 1, z: 1}
   m_Children:
@@ -11508,7 +11508,7 @@ Transform:
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   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 906262002}
-  m_LocalRotation: {x: 0.05491182, y: 0.032222655, z: -0.0017730044, w: 0.99796957}
+  m_LocalRotation: {x: 0.054911688, y: 0.032297026, z: -0.0017770969, w: 0.9979672}
   m_LocalPosition: {x: 0, y: 0, z: 0}
   m_LocalScale: {x: 1, y: 1, z: 1}
   m_Children:
@@ -15557,7 +15557,7 @@ ParticleSystem:
         m_RotationOrder: 4
     minKillSpeed: 0
     maxKillSpeed: 10000
-    radiusScale: 1
+    radiusScale: 0.15
     collidesWith:
       serializedVersion: 2
       m_Bits: 55
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+  m_LocalRotation: {x: 0.09112655, y: 0.032211162, z: -0.002949112, w: 0.9953139}
   m_LocalPosition: {x: 0, y: 2.5, z: -7.04}
   m_LocalScale: {x: 1, y: 1, z: 1}
   m_Children: []
@@ -17583,7 +17583,7 @@ Transform:
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   m_LocalPosition: {x: 0, y: 0, z: 0}
   m_LocalScale: {x: 1, y: 1, z: 1}
   m_Children:

Assets/Settings/CustomForwardRendererData.asset

@@ -53,7 +53,6 @@ MonoBehaviour:
   m_EditorClassIdentifier: 
   m_Active: 1
   blitMaterial: {fileID: 2100000, guid: ba62d2f9845041e498edc0cfd32a8813, type: 2}
-  blurMaterial: {fileID: 2100000, guid: 0359b9610290c564e9a85a22826ef73f, type: 2}
   renderObjectsSettings:
     passTag: RenderMetaballs
     Event: 400
@@ -80,6 +79,7 @@ MonoBehaviour:
       restoreCamera: 1
       offset: {x: 0, y: 0, z: 0, w: 0}
       cameraFieldOfView: 60
+  downsamplingAmount: 4
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