add DirectionalBlur

add DirectionalBlur

Author: QianMo

Assets/X-PostProcessing/Effects/DirectionalBlur.meta

@@ -0,0 +1,96 @@
+
+//----------------------------------------------------------------------------------------------------------
+// X-PostProcessing Library
+// created by QianMo @ 2020
+//----------------------------------------------------------------------------------------------------------
+
+using System;
+using UnityEngine;
+using UnityEngine.Rendering;
+using UnityEngine.Rendering.PostProcessing;
+
+
+namespace XPostProcessing
+{
+
+    [Serializable]
+    [PostProcess(typeof(DirectionalBlurRenderer), PostProcessEvent.AfterStack, "X-PostProcessing/Blur/DirectionalBlur")]
+    public class DirectionalBlur : PostProcessEffectSettings
+    {
+
+        [Range(0.0f, 5.0f)]
+        public FloatParameter BlurRadius = new FloatParameter { value = 1f };
+
+        [Range(1, 30)]
+        public IntParameter Iteration = new IntParameter { value = 12 };
+
+        [Range(0.0f, 6.0f)]
+        public FloatParameter Angle = new FloatParameter { value = 0.5f };
+
+        [Range(1.0f, 10.0f)]
+        public FloatParameter RTDownScaling = new FloatParameter { value = 1.0f };
+
+    }
+
+    public sealed class DirectionalBlurRenderer : PostProcessEffectRenderer<DirectionalBlur>
+    {
+
+        private const string PROFILER_TAG = "X-DirectionalBlur";
+        private Shader shader;
+
+
+        public override void Init()
+        {
+            shader = Shader.Find("Hidden/X-PostProcessing/DirectionalBlur");
+        }
+
+        public override void Release()
+        {
+            base.Release();
+        }
+
+        static class ShaderIDs
+        {
+            internal static readonly int Iteration = Shader.PropertyToID("_Iteration");
+            internal static readonly int Direction = Shader.PropertyToID("_Direction");
+            internal static readonly int BufferRT = Shader.PropertyToID("_BufferRT");
+        }
+
+        public override void Render(PostProcessRenderContext context)
+        {
+
+            CommandBuffer cmd = context.command;
+            PropertySheet sheet = context.propertySheets.Get(shader);
+            cmd.BeginSample(PROFILER_TAG);
+
+
+            if (settings.RTDownScaling > 1)
+            {
+                int RTWidth = (int)(context.screenWidth / settings.RTDownScaling);
+                int RTHeight = (int)(context.screenHeight / settings.RTDownScaling);
+                cmd.GetTemporaryRT(ShaderIDs.BufferRT, RTWidth, RTHeight, 0, FilterMode.Bilinear);
+                // downsample screen copy into smaller RT
+                context.command.BlitFullscreenTriangle(context.source, ShaderIDs.BufferRT);
+            }
+
+            float sinVal = (Mathf.Sin(settings.Angle) * settings.BlurRadius * 0.05f) / settings.Iteration;
+            float cosVal = (Mathf.Cos(settings.Angle) * settings.BlurRadius * 0.05f) / settings.Iteration;
+            sheet.properties.SetVector(ShaderIDs.Direction, new Vector2(sinVal, cosVal));
+            sheet.properties.SetFloat(ShaderIDs.Iteration, settings.Iteration);
+
+            if (settings.RTDownScaling > 1)
+            {
+                cmd.BlitFullscreenTriangle(ShaderIDs.BufferRT, context.destination, sheet, 0);
+            }
+            else
+            {
+                cmd.BlitFullscreenTriangle(context.source, context.destination, sheet, 0);
+            }
+
+
+            cmd.ReleaseTemporaryRT(ShaderIDs.BufferRT);
+            cmd.EndSample(PROFILER_TAG);
+        }
+    }
+}
+        

Assets/X-PostProcessing/Effects/DirectionalBlur/DirectionalBlur.cs

@@ -0,0 +1,50 @@
+
+//----------------------------------------------------------------------------------------------------------
+// X-PostProcessing Library
+// created by QianMo @ 2020
+//----------------------------------------------------------------------------------------------------------
+
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEditor;
+
+using UnityEditor.Rendering.PostProcessing;
+using UnityEngine.Rendering.PostProcessing;
+
+namespace XPostProcessing
+{
+    [PostProcessEditor(typeof(DirectionalBlur))]
+    public sealed class DirectionalBlurEditor : PostProcessEffectEditor<DirectionalBlur>
+    {
+
+        SerializedParameterOverride BlurRadius;
+        SerializedParameterOverride Iteration;
+        SerializedParameterOverride Angle;
+        SerializedParameterOverride RTDownScaling;
+
+
+        public override void OnEnable()
+        {
+            BlurRadius = FindParameterOverride(x => x.BlurRadius);
+            Iteration = FindParameterOverride(x => x.Iteration);
+            Angle = FindParameterOverride(x => x.Angle);
+            RTDownScaling = FindParameterOverride(x => x.RTDownScaling);
+        }
+
+        public override string GetDisplayTitle()
+        {
+            return XPostProcessingEditorUtility.DISPLAY_TITLE_PREFIX + base.GetDisplayTitle();
+        }
+
+        public override void OnInspectorGUI()
+        {
+            PropertyField(BlurRadius);
+            PropertyField(Iteration);
+            PropertyField(Angle);
+            PropertyField(RTDownScaling);
+        }
+
+    }
+}
+        

Assets/X-PostProcessing/Effects/DirectionalBlur/DirectionalBlur.cs.meta

@@ -0,0 +1,55 @@
+
+//----------------------------------------------------------------------------------------------------------
+// X-PostProcessing Library
+// created by QianMo @ 2020
+//----------------------------------------------------------------------------------------------------------
+
+Shader "Hidden/X-PostProcessing/DirectionalBlur"
+{
+	HLSLINCLUDE
+	
+	#include "../../../Shaders/StdLib.hlsl"
+	#include "../../../Shaders/XPostProcessing.hlsl"
+
+	uniform half _Iteration;
+	uniform half2 _Direction;
+	
+	half4 DirectionalBlur(VaryingsDefault i)
+	{
+		half4 color = half4(0.0, 0.0, 0.0, 0.0);
+
+		for (int k = -_Iteration; k < _Iteration; k++)
+		{
+			color += SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, i.texcoord - _Direction * k);
+		}
+		half4 finalColor = color / (_Iteration * 2.0);
+
+		return finalColor;
+	}
+
+	half4 Frag(VaryingsDefault i): SV_Target
+	{
+		return DirectionalBlur(i);
+	}
+	
+	ENDHLSL
+	
+
+	SubShader
+	{
+		Cull Off ZWrite Off ZTest Always
+		
+		Pass
+		{
+			HLSLPROGRAM
+			
+			#pragma vertex VertDefault
+			#pragma fragment Frag
+			
+			ENDHLSL
+			
+		}
+	}
+}
+
+