unity_native_render_plugin/Packages/com.unity.render-pipelines.universal@14.0.11/Runtime/XRenderFeatures/AmbientOcclusion/CapsuleAO.cs

//using System;
//using System.Runtime.InteropServices;
//using Unity.Collections.LowLevel.Unsafe;
//using UnityEngine;
//using UnityEngine.Rendering;
//using UnityEngine.Rendering.Universal;

//namespace X.Rendering.Feature
//{
//    [StructLayout(LayoutKind.Sequential)]
//    public struct Capsule
//    {
//        public Vector3 a, b;
//        public float radius;
//    }

//    [StructLayout(LayoutKind.Sequential)]
//    public struct Character
//    {
//        public Vector3 position;
//        public float radius;
//        public Vector4 lightDir; //xyz:lightDir, w:根据lightColor 算个系数
//        public int startID, endID;
//    }

//    public class CapsuleAO : ScriptableRendererFeature
//    {
//        [Serializable]
//        public class CapsuleAOSettings
//        {
//            public RenderPassEvent RenderPassEvent = RenderPassEvent.BeforeRenderingTransparents;
//            public float AmbientIntensity = 0.2f;
//            public float ShadowIntensity = 0.4f;
//            public float ShadowSharpness = 20;
//            [Range(1, 90)]
//            public float ConeAngle = 1;
//            public Material CapsuleAOMat;
//        }

//        [SerializeField]
//        CapsuleAOSettings settings;
//        CapsuleAOPass capsuleAOPass;
//        public override void AddRenderPasses(ScriptableRenderer renderer, ref RenderingData renderingData)
//        {
//            {
//                renderer.EnqueuePass(capsuleAOPass);
//            }
//        }

//        public override void Create()
//        {
//            capsuleAOPass = new(settings);
//        }

//        class CapsuleAOPass : ScriptableRenderPass, IDisposable
//        {
//            private CapsuleAOSettings settings;
//            private GraphicsBuffer capsuleDataBuffer;
//            private GraphicsBuffer characterDataBuffer;
//            private ProfilingSampler profiler;



//            public CapsuleAOPass(CapsuleAOSettings settings)
//            {
//                this.settings = settings;
//                profiler = new(nameof(CapsuleAOPass));
//                renderPassEvent = settings.RenderPassEvent;
//            }


//            public override void Configure(CommandBuffer cmd, RenderTextureDescriptor cameraTextureDescriptor)
//            {
//                base.Configure(cmd, cameraTextureDescriptor);
//                ConfigureInput(ScriptableRenderPassInput.Depth | ScriptableRenderPassInput.Normal);
//            }

//            public void Dispose()
//            {
//                capsuleDataBuffer?.Dispose();
//                capsuleDataBuffer = null;
//                characterDataBuffer?.Dispose();
//                characterDataBuffer = null;
//            }

//            public override void Execute(ScriptableRenderContext context, ref RenderingData renderingData)
//            {
//                if (!XRenderFeatureManager.Instance)
//                {
//                    return;
//                }
//                ref var characterArray = ref XRenderFeatureManager.Instance.CharacterArray;
//                ref var capsuleArray = ref XRenderFeatureManager.Instance.CapsuleArray;
//                if (!capsuleArray.IsCreated)
//                {
//                    return;
//                }

//                if (capsuleDataBuffer == null || capsuleDataBuffer.count != capsuleArray.Length)
//                {
//                    capsuleDataBuffer?.Release();
//                    capsuleDataBuffer = new GraphicsBuffer(GraphicsBuffer.Target.Structured, capsuleArray.Length, UnsafeUtility.SizeOf<Capsule>());
//                }

//                if (characterDataBuffer == null || characterDataBuffer.count != characterArray.Length)
//                {
//                    characterDataBuffer?.Release();
//                    characterDataBuffer = new GraphicsBuffer(GraphicsBuffer.Target.Structured, characterArray.Length, UnsafeUtility.SizeOf<Character>());
//                }

//                capsuleDataBuffer.SetData(capsuleArray);
//                characterDataBuffer.SetData(characterArray);

//                var cmd = renderingData.commandBuffer;
//                using var scp = new ProfilingScope(cmd, profiler);
//                cmd.SetGlobalBuffer("_CapsuleData", capsuleDataBuffer);
//                cmd.SetGlobalBuffer("_CharacterData", characterDataBuffer);
//                cmd.SetGlobalInt("_CapsulesCount", capsuleArray.Length);
//                cmd.SetGlobalInt("_CharactersCount", characterArray.Length);
//                cmd.SetGlobalFloat("_AmbientIntensity", settings.AmbientIntensity);
//                cmd.SetGlobalFloat("_ShadowIntensity", settings.ShadowIntensity);
//                cmd.SetGlobalFloat("_ShadowSharpness", settings.ShadowSharpness);
//                cmd.SetGlobalFloat("_ConeAngle", settings.ConeAngle);
//                var renderer = renderingData.cameraData.renderer;

//                cmd.SetRenderTarget(renderer.cameraColorTargetHandle, loadAction: RenderBufferLoadAction.Load, storeAction: RenderBufferStoreAction.Store);
//                cmd.DrawProcedural(Matrix4x4.identity, settings.CapsuleAOMat, 0, MeshTopology.Triangles, 3);
//            }
//        }
//    }
//}