wip visual #learningstuff

Assets/Material/Retroed.mat

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-    linkText: 
-    url:
-  - heading: URP Documentation
-    text:
-    linkText: Read more about URP
-    url: https://docs.unity3d.com/Packages/com.unity.render-pipelines.universal@latest
-  - heading: Forums
-    text:
-    linkText: Get answers and support
-    url: https://forum.unity.com/forums/universal-render-pipeline.383/
-  - heading: Report bugs
-    text:
-    linkText: Submit a report
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Assets/Scripts/Visual.meta

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Assets/Scripts/Visual/RetroPostProcess.cs

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+using UnityEngine;
+using UnityEngine.Serialization;
+
+namespace Visual
+{
+    /// <summary>
+    /// https://luka712.github.io/2018/07/01/Pixelate-it-Shadertoy-Unity/#:~:text=First%20I%E2%80%99m%20going%20to%20create%20script%20for%20loading%20shader.
+    /// </summary>
+    [ExecuteInEditMode]
+    public class RetroPostProcess : MonoBehaviour
+    {
+        [FormerlySerializedAs("cellSize")] [SerializeField]
+        private Vector2 m_CellSize = new Vector2(4, 4);
+
+        private Material _material;
+        private static readonly int ScreenWidth = Shader.PropertyToID("_ScreenWidth");
+        private static readonly int ScreenHeight = Shader.PropertyToID("_ScreenHeight");
+        private static readonly int CellSizeX = Shader.PropertyToID("_CellSizeX");
+        private static readonly int CellSizeY = Shader.PropertyToID("_CellSizeY");
+
+        private void Awake()
+        {
+            _material = new Material(Shader.Find("Retroed"));
+        }
+
+        private void OnRenderImage(RenderTexture source, RenderTexture destination)
+        {
+            _material.SetFloat(ScreenWidth, Screen.width);
+            _material.SetFloat(ScreenHeight, Screen.height);
+            _material.SetFloat(CellSizeX, m_CellSize.x);
+            _material.SetFloat(CellSizeY, m_CellSize.y);
+            Graphics.Blit(source, destination, _material);
+        }
+    }
+}

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Assets/Settings/URP-HighFidelity.asset

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@@ -48,6 +51,8 @@ MonoBehaviour:
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Assets/Shaders/Retroed.shader

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+Shader "Retroed"
+{
+    Properties
+    {
+        _MainTex("Texture", 2D) = "white" {}
+        _ScreenWidth("screen width", float) = 320.0
+        _ScreenHeight("screen height", float) = 240.0
+        _CellSizeX("size of x cell", float) = 4.0
+        _CellSizeY("size of y cell", float) = 4.0
+    }
+    SubShader
+    {
+        // No culling or depth
+        Cull Off ZWrite Off ZTest Always
+
+        Pass
+        {
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+
+            #include "UnityCG.cginc"
+
+            struct appdata
+            {
+                float4 vertex : POSITION;
+                float2 uv : TEXCOORD0;
+            };
+
+            struct v2f
+            {
+                float2 uv : TEXCOORD0;
+                float4 vertex : SV_POSITION;
+            };
+
+            v2f vert(appdata v)
+            {
+                v2f o;
+                o.vertex = UnityObjectToClipPos(v.vertex);
+                o.uv = v.uv;
+                return o;
+            }
+
+            sampler2D _MainTex;
+            float _ScreenWidth;
+            float _ScreenHeight;
+            float _CellSizeX;
+            float _CellSizeY;
+
+            fixed4 frag(v2f i) : SV_Target
+            {
+                float2 uv = i.uv;
+
+                float pixelX = _ScreenWidth / _CellSizeX;
+                float pixelY = _ScreenHeight / _CellSizeY;
+
+                return tex2D(_MainTex, float2(floor(pixelX * uv.x) / pixelX, floor(pixelY * uv.y) / pixelY));
+            }
+            ENDCG
+        }
+    }
+}

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ProjectSettings/TagManager.asset

@@ -19,7 +19,7 @@ TagManager:
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   - 
   - 
-  - 
+  - PostProcessing
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