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Assets/_Game/Settings/Render Pipeline/GrabTex.cs

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+using UnityEngine;
+using UnityEngine.Rendering;
+using UnityEngine.Rendering.Universal;
+
+public class GrabTex : ScriptableRendererFeature
+{
+    class CustomRenderPass : ScriptableRenderPass
+    {
+        static string rt_Name = "_GrabTex";
+        static int rt_ID = Shader.PropertyToID(rt_Name);
+
+        // This method is called before executing the render pass.
+        // It can be used to configure render targets and their clear state. Also to create temporary render target textures.
+        // When empty this render pass will render to the active camera render target.
+        // You should never call CommandBuffer.SetRenderTarget. Instead call <c>ConfigureTarget</c> and <c>ConfigureClear</c>.
+        // The render pipeline will ensure target setup and clearing happens in a performant manner.
+        public override void OnCameraSetup(CommandBuffer cmd, ref RenderingData renderingData)
+        {
+            RenderTextureDescriptor descriptor = new RenderTextureDescriptor(1920, 1080, RenderTextureFormat.DefaultHDR, 0);
+
+            cmd.GetTemporaryRT(rt_ID, descriptor);
+
+            ConfigureTarget(rt_ID);
+            ConfigureClear(ClearFlag.Color, Color.black);
+
+        }
+
+        // Here you can implement the rendering logic.
+        // Use <c>ScriptableRenderContext</c> to issue drawing commands or execute command buffers
+        // https://docs.unity3d.com/ScriptReference/Rendering.ScriptableRenderContext.html
+        // 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("tmpcmd");
+
+            cmd.Blit(renderingData.cameraData.renderer.cameraColorTarget, rt_ID);
+            context.ExecuteCommandBuffer(cmd);
+            cmd.Clear();
+            cmd.Release();
+        }
+
+        // Cleanup any allocated resources that were created during the execution of this render pass.
+        public override void OnCameraCleanup(CommandBuffer cmd)
+        {
+            cmd.ReleaseTemporaryRT(rt_ID);
+        }
+    }
+
+    CustomRenderPass m_ScriptablePass;
+
+    /// <inheritdoc/>
+    public override void Create()
+    {
+        m_ScriptablePass = new CustomRenderPass();
+
+        // Configures where the render pass should be injected.
+        m_ScriptablePass.renderPassEvent = RenderPassEvent.AfterRenderingTransparents;
+    }
+
+    // Here you can inject one or multiple render passes in the renderer.
+    // This method is called when setting up the renderer once per-camera.
+    public override void AddRenderPasses(ScriptableRenderer renderer, ref RenderingData renderingData)
+    {
+        renderer.EnqueuePass(m_ScriptablePass);
+    }
+}
+
+