阶段性完成
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SoulliesOfficial
235
Assets/PotaToon/Runtime/Scripts/CharacterShadowPass.cs
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235
Assets/PotaToon/Runtime/Scripts/CharacterShadowPass.cs
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using System;
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using UnityEngine;
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using UnityEngine.Experimental.Rendering;
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using UnityEngine.Rendering;
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using UnityEngine.Rendering.Universal;
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#if UNITY_6000_0_OR_NEWER
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using UnityEngine.Rendering.RenderGraphModule;
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#endif
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namespace PotaToon
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{
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public class CharacterShadowPass : ScriptableRenderPass
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{
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/* ID */
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private static readonly ShaderTagId k_ShaderTagId = new ShaderTagId("CharacterDepth");
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/* Member Variables */
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private RTHandle m_CharShadowRT;
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private ProfilingSampler m_ProfilingSampler;
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private PassData m_PassData;
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private static int[] s_TextureSize = new int[2] { 1, 1 };
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private ToonCharacterShadow m_CBuffer;
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public CharacterShadowPass(string featureName)
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{
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m_PassData = new PassData();
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renderPassEvent = RenderPassEvent.BeforeRenderingPrePasses;
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m_ProfilingSampler = new ProfilingSampler(featureName);
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}
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public void Dispose()
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{
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m_CharShadowRT?.Release();
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#if UNITY_2021_3
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ConstantBuffer.ReleaseAll();
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#endif
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}
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public void Setup(in RenderingData renderingData, PotaToon volume)
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{
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m_CBuffer = new ToonCharacterShadow();
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m_PassData.enabled = true;
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m_PassData.bias = new Vector3(volume.bias.value * PotaToon.k_BiasScale, volume.normalBias.value * 0.01f, 0f);
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var scale = (int)volume.textureScale.value;
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m_PassData.cascadeResolutionScale = 1.0f;
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m_PassData.cascadeMaxDistance = CharacterShadowUtils.GetCullingDistance(renderingData.cameraData.camera, volume.shadowCullingDistance.value);
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s_TextureSize[0] = 1024 * scale;
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s_TextureSize[1] = 1024 * scale;
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m_PassData.useBrightestLight = volume.mode.value == PotaToonMode.Concert;
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m_PassData.followLightLayer = volume.followLayerMask.value;
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m_PassData.maxToonBrightness = volume.maxToonBrightness.value;
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CharacterShadowUtils.shadowCamera.lightDirectionOffset = volume.mode.value == PotaToonMode.Normal ? volume.charShadowDirOffset.value : Vector3.zero;
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CharacterShadowUtils.shadowCamera.overrideLightDirection = volume.mode.value == PotaToonMode.Normal && volume.charShadowDirOffsetMode.value == LightOffsetMode.World;
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}
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private static void UpdateConstantBuffer_Internal(ref ToonCharacterShadow cb, PassData passData, in CharacterShadowUtils.BrightestLightData brightestLightData)
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{
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var shadowCamera = CharacterShadowUtils.shadowCamera;
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var textureScale = s_TextureSize[0] / 1024;
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float softShadowSamples = Mathf.Clamp((int)Mathf.Log(textureScale, 2) + 1, 2, 4);
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if (shadowCamera != null)
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{
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passData.projectM = shadowCamera.projectionMatrix;
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passData.viewM = shadowCamera.GetViewMatrix();
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if (shadowCamera.distanceCameraToNearestRenderer > 0.5f)
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softShadowSamples = Mathf.Max(softShadowSamples - 1f, 2f);
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}
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float invShadowMapWidth = 1.0f / s_TextureSize[0];
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float invShadowMapHeight = 1.0f / s_TextureSize[1];
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float invHalfShadowMapWidth = 0.5f * invShadowMapWidth;
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float invHalfShadowMapHeight = 0.5f * invShadowMapHeight;
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cb._BrightestLightDirection = brightestLightData.lightDirection;
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cb._BrightestLightIndex = (uint)brightestLightData.lightIndex;
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cb._CharShadowParams = new Vector4(passData.bias.x, passData.bias.y, 0, 0);
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cb._CharShadowViewProjM = passData.projectM * passData.viewM;
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cb._CharShadowOffset0 = new Vector4(-invHalfShadowMapWidth, -invHalfShadowMapHeight, invHalfShadowMapWidth, -invHalfShadowMapHeight);
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cb._CharShadowOffset1 = new Vector4(-invHalfShadowMapWidth, invHalfShadowMapHeight, invHalfShadowMapWidth, invHalfShadowMapHeight);
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cb._CharShadowmapSize = new Vector4(invShadowMapWidth, invShadowMapHeight, s_TextureSize[0], s_TextureSize[1]);
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invShadowMapWidth = 1.0f / TransparentShadowPass.s_TextureSize[0];
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invShadowMapHeight = 1.0f / TransparentShadowPass.s_TextureSize[1];
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cb._CharTransparentShadowmapSize = new Vector4(invShadowMapWidth, invShadowMapHeight, TransparentShadowPass.s_TextureSize[0], TransparentShadowPass.s_TextureSize[1]);
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var rcpMaxBoundSize = 1.0f / CharacterShadowUtils.shadowCamera.maxBoundSize;
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cb._CharShadowCascadeParams = new Vector4(passData.cascadeMaxDistance, passData.cascadeResolutionScale, softShadowSamples, rcpMaxBoundSize);
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cb._UseBrightestLight = passData.useBrightestLight ? 1u : 0u;
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cb._IsBrightestLightMain = brightestLightData.isMainLight ? 1u : 0u;
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cb._MaxToonBrightness = passData.maxToonBrightness;
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}
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private static void UpdateConstantBuffer(ref ToonCharacterShadow cb, PassData passData, ref RenderingData renderingData)
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{
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CharacterShadowUtils.GetBrightestLightData(ref renderingData, passData.useBrightestLight, passData.followLightLayer, out var brightestLightData);
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UpdateConstantBuffer_Internal(ref cb, passData, brightestLightData);
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}
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private RenderTextureDescriptor GetRenderTextureDescriptor()
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{
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var descriptor = new RenderTextureDescriptor(s_TextureSize[0], s_TextureSize[1], RenderTextureFormat.RG32, 0);
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descriptor.dimension = TextureDimension.Tex2D;
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descriptor.sRGB = false;
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descriptor.depthStencilFormat = GraphicsFormat.None;
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descriptor.msaaSamples = 1;
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return descriptor;
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}
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private class PassData
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{
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public bool enabled;
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public Matrix4x4 viewM;
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public Matrix4x4 projectM;
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public float maxToonBrightness;
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public Vector3 bias;
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public bool useBrightestLight;
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public LayerMask followLightLayer;
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public float cascadeMaxDistance;
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public float cascadeResolutionScale;
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#if UNITY_6000_0_OR_NEWER
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// RenderGraph Path
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public RendererListHandle rendererList;
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public ToonCharacterShadow cb;
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#endif
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}
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#if UNITY_6000_0_OR_NEWER
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[Obsolete]
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#endif
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public override void OnCameraSetup(CommandBuffer cmd, ref RenderingData renderingData)
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{
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// Allocate Char Shadowmap
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RenderingUtils.ReAllocateIfNeeded(ref m_CharShadowRT, GetRenderTextureDescriptor(), FilterMode.Bilinear, name:"CharShadowMap");
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cmd.SetGlobalTexture(ShaderIDs._CharShadowMap, m_CharShadowRT);
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}
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#if !UNITY_2021_3
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private static void ExecutePass(CommandBuffer cmd, RendererList rendererList)
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{
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cmd.DrawRendererList(rendererList);
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}
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#endif
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#if UNITY_6000_0_OR_NEWER
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[Obsolete]
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#endif
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public override void Execute(ScriptableRenderContext context, ref RenderingData renderingData)
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{
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var cmd = CommandBufferPool.Get();
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using (new ProfilingScope(cmd, m_ProfilingSampler))
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{
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var filteringSettings = new FilteringSettings(RenderQueueRange.opaque);
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var drawSettings = RenderingUtils.CreateDrawingSettings(k_ShaderTagId, ref renderingData, SortingCriteria.CommonOpaque);
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UpdateConstantBuffer(ref m_CBuffer, m_PassData, ref renderingData);
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ConstantBuffer.PushGlobal(cmd, m_CBuffer, ShaderIDs._ToonCharacterShadow);
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CoreUtils.SetRenderTarget(cmd, m_CharShadowRT, ClearFlag.Color, 0, CubemapFace.Unknown, 0);
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context.ExecuteCommandBuffer(cmd);
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cmd.Clear();
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#if UNITY_2021_3
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var rendererListDesc = new UnityEngine.Rendering.RendererUtils.RendererListDesc(k_ShaderTagId, renderingData.cullResults, renderingData.cameraData.camera);
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rendererListDesc.sortingCriteria = SortingCriteria.CommonOpaque;
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rendererListDesc.renderQueueRange = RenderQueueRange.opaque;
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cmd.DrawRendererList(context.CreateRendererList(rendererListDesc));
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#else
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var param = new RendererListParams(renderingData.cullResults, drawSettings, filteringSettings);
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ExecutePass(cmd, context.CreateRendererList(ref param));
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#endif
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}
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context.ExecuteCommandBuffer(cmd);
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CommandBufferPool.Release(cmd);
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}
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#if UNITY_6000_0_OR_NEWER
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#region RenderGraph
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private static void UpdateConstantBuffer(ref ToonCharacterShadow cb, PassData passData, UniversalLightData lightData)
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{
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CharacterShadowUtils.GetBrightestLightData(lightData, passData.useBrightestLight, passData.followLightLayer, out var brightestLightData);
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UpdateConstantBuffer_Internal(ref cb, passData, brightestLightData);
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}
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private static void ExecutePass(RasterCommandBuffer cmd, RendererList rendererList)
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{
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cmd.DrawRendererList(rendererList);
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}
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public override void RecordRenderGraph(RenderGraph renderGraph, ContextContainer frameData)
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{
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var renderingData = frameData.Get<UniversalRenderingData>();
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var lightData = frameData.Get<UniversalLightData>();
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var cameraData = frameData.Get<UniversalCameraData>();
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var drawSettings = RenderingUtils.CreateDrawingSettings(k_ShaderTagId, renderingData, cameraData, lightData, SortingCriteria.CommonOpaque);
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TextureHandle output = UniversalRenderer.CreateRenderGraphTexture(renderGraph, GetRenderTextureDescriptor(), "CharShadowMap", true, FilterMode.Bilinear);
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using (var builder = renderGraph.AddRasterRenderPass<PassData>("[PotaToon] Character Shadow", out var passData, m_ProfilingSampler))
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{
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builder.AllowGlobalStateModification(true);
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builder.SetRenderAttachment(output, 0);
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var param = new RendererListParams(renderingData.cullResults, drawSettings, new FilteringSettings(RenderQueueRange.opaque));
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passData.rendererList = renderGraph.CreateRendererList(param);
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builder.UseRendererList(passData.rendererList);
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if (output.IsValid())
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builder.SetGlobalTextureAfterPass(output, ShaderIDs._CharShadowMap);
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passData.viewM = m_PassData.viewM;
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passData.projectM = m_PassData.projectM;
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passData.bias = m_PassData.bias;
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passData.useBrightestLight = m_PassData.useBrightestLight;
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passData.followLightLayer = m_PassData.followLightLayer;
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passData.enabled = m_PassData.enabled;
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passData.cascadeMaxDistance = m_PassData.cascadeMaxDistance;
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passData.cascadeResolutionScale = m_PassData.cascadeResolutionScale;
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passData.maxToonBrightness = m_PassData.maxToonBrightness;
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passData.cb = new ToonCharacterShadow();
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UpdateConstantBuffer(ref passData.cb, passData, lightData);
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builder.SetRenderFunc((PassData data, RasterGraphContext context) =>
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{
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ConstantBuffer.PushGlobal(data.cb, ShaderIDs._ToonCharacterShadow);
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ExecutePass(context.cmd, data.rendererList);
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});
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}
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}
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#endregion
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#endif
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}
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}
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