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using System; |
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using System.Collections.Generic; |
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using UnityEngine; |
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using UnityEngine.Profiling; |
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using UnityEngine.Rendering; |
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[ExecuteInEditMode] |
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RenderTexture m_ColorBuffer; |
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CommandBuffer m_CmdBuffer; |
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CustomSampler m_Sampler; |
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int m_ActiveHandles = 0; |
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struct InstancedDrawArgs |
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{ |
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static List<CustomDepthBuffer> s_Instances = new List<CustomDepthBuffer>(); |
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static CustomDepthBuffer GetInstance(string name) |
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public class Handle |
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// we expect a very limited number of instances, optimize otherwise
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foreach (var instance in s_Instances) |
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CustomDepthBuffer m_Buffer; |
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public Handle(CustomDepthBuffer buffer) |
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if (instance.id == name) |
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return instance; |
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m_Buffer = buffer; |
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m_Buffer.m_ActiveHandles++; |
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return null; |
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} |
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public static RenderTexture GetTarget(string name) |
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{ |
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var instance = GetInstance(name); |
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if (instance == null) |
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return null; |
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return instance.target; |
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public void Release() |
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{ |
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m_Buffer.m_ActiveHandles--; |
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m_Buffer = null; |
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} |
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public RenderTexture target |
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{ |
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get { return m_Buffer.target; } |
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} |
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public Vector4 zBufferParams |
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{ |
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get { return m_Buffer.zBufferParams; } |
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} |
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public static Vector4 GetZBufferParams(string name) |
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public static Handle GetHandle(string name) |
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var instance = GetInstance(name); |
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if (instance == null) |
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return Vector4.zero; |
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return instance.zBufferParams; |
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// we expect a very limited number of instances, optimize otherwise
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foreach (var instance in s_Instances) |
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{ |
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if (instance.id == name) |
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return new Handle(instance); |
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} |
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throw new InvalidOperationException($"No CustomDepthBuffer named [{name}], Handle could not be instanciated."); |
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} |
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class InstancingDataGenerationVisitor |
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void OnEnable() |
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{ |
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if (m_Sampler == null) |
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m_Sampler = CustomSampler.Create("Update Custom Depth Buffer"); |
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var shader = Shader.Find("HDRP/Unlit"); |
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m_Material = new Material(shader); |
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m_Material.enableInstancing = true; |
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m_DepthBuffer.Release(); |
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if (m_ColorBuffer != null) |
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m_ColorBuffer.Release(); |
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m_CmdBuffer.SetRenderTarget(m_ColorBuffer.colorBuffer, m_DepthBuffer.colorBuffer); |
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m_CmdBuffer.ClearRenderTarget(true, true, Color.black); |
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var projectionMatrix = GL.GetGPUProjectionMatrix(camera.projectionMatrix, true); |
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m_ZBufferParams = GetZBufferParams(camera, projectionMatrix); |
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using (new ProfilingSample(m_CmdBuffer, "Render Custom Depth Buffer")) |
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{ |
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m_CmdBuffer.SetRenderTarget(m_ColorBuffer.colorBuffer, m_DepthBuffer.colorBuffer); |
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m_CmdBuffer.ClearRenderTarget(true, true, Color.black); |
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var projectionMatrix = GL.GetGPUProjectionMatrix(camera.projectionMatrix, true); |
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m_ZBufferParams = GetZBufferParams(camera, projectionMatrix); |
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var viewMatrix = camera.worldToCameraMatrix; |
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var viewProjectionMatrix = projectionMatrix * viewMatrix; |
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var viewMatrix = camera.worldToCameraMatrix; |
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var viewProjectionMatrix = projectionMatrix * viewMatrix; |
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// as we use HDRP we cannot rely on CommandBuffer.SetViewProjectionMatrices(...);
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// we need to manually update uniforms
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m_CmdBuffer.SetGlobalMatrix("_ViewMatrix", viewMatrix); |
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m_CmdBuffer.SetGlobalMatrix("_InvViewMatrix", viewMatrix.inverse); |
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m_CmdBuffer.SetGlobalMatrix("_ProjMatrix", projectionMatrix); |
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m_CmdBuffer.SetGlobalMatrix("_InvProjMatrix", projectionMatrix.inverse); |
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m_CmdBuffer.SetGlobalMatrix("_ViewProjMatrix", viewProjectionMatrix); |
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m_CmdBuffer.SetGlobalMatrix("_InvViewProjMatrix", viewProjectionMatrix.inverse); |
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m_CmdBuffer.SetGlobalMatrix("_CameraViewProjMatrix", viewProjectionMatrix); |
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m_CmdBuffer.SetGlobalVector("_WorldSpaceCameraPos", Vector3.zero); |
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// as we use HDRP we cannot rely on CommandBuffer.SetViewProjectionMatrices(...);
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// we need to manually update uniforms
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m_CmdBuffer.SetGlobalMatrix("_ViewMatrix", viewMatrix); |
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m_CmdBuffer.SetGlobalMatrix("_InvViewMatrix", viewMatrix.inverse); |
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m_CmdBuffer.SetGlobalMatrix("_ProjMatrix", projectionMatrix); |
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m_CmdBuffer.SetGlobalMatrix("_InvProjMatrix", projectionMatrix.inverse); |
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m_CmdBuffer.SetGlobalMatrix("_ViewProjMatrix", viewProjectionMatrix); |
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m_CmdBuffer.SetGlobalMatrix("_InvViewProjMatrix", viewProjectionMatrix.inverse); |
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m_CmdBuffer.SetGlobalMatrix("_CameraViewProjMatrix", viewProjectionMatrix); |
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m_CmdBuffer.SetGlobalVector("_WorldSpaceCameraPos", Vector3.zero); |
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foreach (var args in m_RenderingData) |
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{ |
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for (var i = 0; i != args.mesh.subMeshCount; ++i) |
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m_CmdBuffer.DrawMeshInstanced(args.mesh, i, m_Material, 0, args.transforms.ToArray()); |
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foreach (var args in m_RenderingData) |
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{ |
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for (var i = 0; i != args.mesh.subMeshCount; ++i) |
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m_CmdBuffer.DrawMeshInstanced(args.mesh, i, m_Material, 0, args.transforms.ToArray()); |
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} |
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} |
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} |
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void Update() |
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{ |
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// No need to update if there are no handles to this this buffer.
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if (m_ActiveHandles == 0) |
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return; |
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m_Sampler.Begin(); |
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var camera = Camera.main; |
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if (camera != null && camera.cameraType == CameraType.Game) |
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{ |
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m_Sampler.End(); |
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} |
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[ContextMenu("Update Rendering Data")] |
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etienne cella
4 年前
