330 lines
14 KiB
C#
Executable File
330 lines
14 KiB
C#
Executable File
//#define URP_10_0_0_OR_NEWER
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//#define UNITY_2021_2_OR_NEWER
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using System.Collections.Generic;
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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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namespace ScreenSpaceCavityCurvature.Universal
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{
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public class SSCCRendererFeature : ScriptableRendererFeature
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{
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private class SSCCRenderPass : ScriptableRenderPass
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{
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void CheckParameters()
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{
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#if !URP_10_0_0_OR_NEWER
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if (sscc.normalsSource.value == SSCC.PerPixelNormals.Camera_URP_VER_TOO_LOW)
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{
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sscc.normalsSource.value = SSCC.PerPixelNormals.ReconstructedFromDepth;
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Debug.LogWarning("URP version too low for Camera based normals, only available in URP 10+ (Unity 2020+).");
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}
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if (sscc.output.value == SSCC.OutputEffectTo._SSCCTexture)
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{
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sscc.output.value = SSCC.OutputEffectTo.Screen;
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Debug.LogWarning("URP version too low for texture output mode, only available in URP 10+ (Unity 2020+).");
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}
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#endif
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}
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SSCC.OutputEffectTo Output => sscc.debugMode.value != SSCC.DebugMode.Disabled ? SSCC.OutputEffectTo.Screen : sscc.output.value;
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public SSCC sscc;
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static class Pass
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{
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public const int Copy = 0;
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public const int Composite = 1;
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}
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static class ShaderProperties
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{
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public static int mainTex = Shader.PropertyToID("_MainTex");
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public static int tempTex = Shader.PropertyToID("_TempTex");
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public static int uvTransform = Shader.PropertyToID("_UVTransform");
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public static int inputTexelSize = Shader.PropertyToID("_Input_TexelSize");
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public static int uvToView = Shader.PropertyToID("_UVToView");
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public static int worldToCameraMatrix = Shader.PropertyToID("_WorldToCameraMatrix");
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public static int effectIntensity = Shader.PropertyToID("_EffectIntensity");
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public static int distanceFade = Shader.PropertyToID("_DistanceFade");
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public static int curvaturePixelRadius = Shader.PropertyToID("_CurvaturePixelRadius");
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public static int curvatureRidge = Shader.PropertyToID("_CurvatureBrights");
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public static int curvatureValley = Shader.PropertyToID("_CurvatureDarks");
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public static int cavityWorldRadius = Shader.PropertyToID("_CavityWorldRadius");
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public static int cavityRidge = Shader.PropertyToID("_CavityBrights");
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public static int cavityValley = Shader.PropertyToID("_CavityDarks");
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public static int globalSSCCTexture = Shader.PropertyToID("_SSCCTexture");
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}
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Material material { get; set; }
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RenderTargetIdentifier source { get; set; }
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CameraData cameraData { get; set; }
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RenderTextureDescriptor sourceDesc { get; set; }
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public void Setup(Shader shader, ScriptableRenderer renderer, RenderingData renderingData)
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{
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if (material == null) material = CoreUtils.CreateEngineMaterial(shader);
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#if !URP_10_0_0_OR_NEWER
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source = renderer.cameraColorTarget;
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cameraData = renderingData.cameraData;
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FetchVolumeComponent();
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renderPassEvent = Output == SSCC.OutputEffectTo.Screen ? RenderPassEvent.BeforeRenderingTransparents : RenderPassEvent.BeforeRenderingOpaques;
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#endif
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}
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#if URP_10_0_0_OR_NEWER
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#if UNITY_2022_1_OR_NEWER
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static RTHandle noneRTHandle = RTHandles.Alloc(BuiltinRenderTextureType.None);
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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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#if UNITY_2022_1_OR_NEWER
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source = renderingData.cameraData.renderer.cameraColorTargetHandle; //implicit conversion hopefully will exist for forseable future
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#else
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source = renderingData.cameraData.renderer.cameraColorTarget;
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#endif
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cameraData = renderingData.cameraData;
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FetchVolumeComponent();
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var passInput = ScriptableRenderPassInput.Depth;
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if (sscc.normalsSource.value == SSCC.PerPixelNormals.Camera)
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passInput |= ScriptableRenderPassInput.Normal;
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ConfigureInput(passInput);
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#if UNITY_2021_2_OR_NEWER
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ConfigureColorStoreAction(RenderBufferStoreAction.DontCare);
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#endif
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renderPassEvent = Output == SSCC.OutputEffectTo.Screen ? RenderPassEvent.BeforeRenderingTransparents : RenderPassEvent.BeforeRenderingOpaques;
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if (Output == SSCC.OutputEffectTo._SSCCTexture)
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#if UNITY_2022_1_OR_NEWER
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ConfigureTarget(noneRTHandle);
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#else
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ConfigureTarget(BuiltinRenderTextureType.None);
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#endif
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}
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#endif
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public override void Configure(CommandBuffer cmd, RenderTextureDescriptor cameraTextureDescriptor)
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{
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if (material == null) return;
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FetchVolumeComponent();
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if (!sscc.IsActive()) return;
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cameraTextureDescriptor.msaaSamples = 1;
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cameraTextureDescriptor.depthBufferBits = 0;
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sourceDesc = cameraTextureDescriptor;
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CheckParameters();
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UpdateMaterialProperties();
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UpdateShaderKeywords();
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if (Output == SSCC.OutputEffectTo._SSCCTexture)
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#if UNITY_2022_1_OR_NEWER
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ConfigureTarget(noneRTHandle);
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#else
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ConfigureTarget(BuiltinRenderTextureType.None);
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#endif
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}
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public override void Execute(ScriptableRenderContext context, ref RenderingData renderingData)
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{
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if (material == null)
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{
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Debug.LogError("SSCC material has not been correctly initialized...");
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return;
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}
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if (!sscc.IsActive()) return;
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var cmd = CommandBufferPool.Get("SSCC");
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if (Output == SSCC.OutputEffectTo._SSCCTexture)
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{
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cmd.ReleaseTemporaryRT(ShaderProperties.globalSSCCTexture);
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cmd.GetTemporaryRT(ShaderProperties.globalSSCCTexture, sourceDesc.width, sourceDesc.height, 0, FilterMode.Bilinear, GraphicsFormat.R16G16B16A16_SFloat/*.R32G32B32A32_SFloat*/);
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cmd.SetGlobalTexture(ShaderProperties.globalSSCCTexture, new RenderTargetIdentifier(ShaderProperties.globalSSCCTexture, 0, CubemapFace.Unknown, -1));
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}
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else
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{
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cmd.GetTemporaryRT(ShaderProperties.tempTex, sourceDesc, FilterMode.Point);
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BlitFullscreenMesh(cmd, source, ShaderProperties.tempTex, material, Pass.Copy);
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}
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if (Output == SSCC.OutputEffectTo.Screen)
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BlitFullscreenMesh(cmd, ShaderProperties.tempTex, source, material, Pass.Composite);
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else
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BlitFullscreenMesh(cmd, ShaderProperties.globalSSCCTexture, material, Pass.Composite);
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if (Output == SSCC.OutputEffectTo.Screen)
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cmd.ReleaseTemporaryRT(ShaderProperties.tempTex);
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context.ExecuteCommandBuffer(cmd);
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CommandBufferPool.Release(cmd);
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}
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public void Cleanup()
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{
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CoreUtils.Destroy(material);
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}
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private void FetchVolumeComponent()
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{
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if (sscc == null)
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sscc = VolumeManager.instance.stack.GetComponent<SSCC>();
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}
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void UpdateMaterialProperties()
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{
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var sourceWidth = cameraData.cameraTargetDescriptor.width;
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var sourceHeight = cameraData.cameraTargetDescriptor.height;
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float tanHalfFovY = Mathf.Tan(0.5f * cameraData.camera.fieldOfView * Mathf.Deg2Rad);
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float invFocalLenX = 1.0f / (1.0f / tanHalfFovY * (sourceHeight / (float)sourceWidth));
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float invFocalLenY = 1.0f / (1.0f / tanHalfFovY);
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material.SetVector(ShaderProperties.inputTexelSize, new Vector4(1f / sourceWidth, 1f / sourceHeight, sourceWidth, sourceHeight));
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material.SetVector(ShaderProperties.uvToView, new Vector4(2.0f * invFocalLenX, -2.0f * invFocalLenY, -1.0f * invFocalLenX, 1.0f * invFocalLenY));
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material.SetMatrix(ShaderProperties.worldToCameraMatrix, cameraData.camera.worldToCameraMatrix);
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material.SetFloat(ShaderProperties.effectIntensity, sscc.effectIntensity.value);
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material.SetFloat(ShaderProperties.distanceFade, sscc.distanceFade.value);
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material.SetFloat(ShaderProperties.curvaturePixelRadius, new float[] { 0f, 0.5f, 1f, 1.5f, 2.5f }[sscc.curvaturePixelRadius.value]);
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material.SetFloat(ShaderProperties.curvatureRidge, sscc.curvatureBrights.value == 0f ? 999f : (5f - sscc.curvatureBrights.value));
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material.SetFloat(ShaderProperties.curvatureValley, sscc.curvatureDarks.value == 0f ? 999f : (5f - sscc.curvatureDarks.value));
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material.SetFloat(ShaderProperties.cavityWorldRadius, sscc.cavityRadius.value);
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material.SetFloat(ShaderProperties.cavityRidge, sscc.cavityBrights.value * 2f);
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material.SetFloat(ShaderProperties.cavityValley, sscc.cavityDarks.value * 2f);
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}
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void UpdateShaderKeywords()
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{
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material.shaderKeywords = new string[]
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{
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cameraData.camera.orthographic ? "ORTHOGRAPHIC_PROJECTION" : "__",
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sscc.debugMode.value == SSCC.DebugMode.EffectOnly ? "DEBUG_EFFECT" : sscc.debugMode.value == SSCC.DebugMode.ViewNormals ? "DEBUG_NORMALS" : "__",
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sscc.normalsSource.value == SSCC.PerPixelNormals.ReconstructedFromDepth ? "NORMALS_RECONSTRUCT" : "__",
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sscc.cavitySamples.value == SSCC.CavitySamples.Low6 ? "CAVITY_SAMPLES_6" : sscc.cavitySamples.value == SSCC.CavitySamples.Medium8 ? "CAVITY_SAMPLES_8" : sscc.cavitySamples.value == SSCC.CavitySamples.High12 ? "CAVITY_SAMPLES_12" : "",
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sscc.saturateCavity.value ? "SATURATE_CAVITY" : "__",
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Output == SSCC.OutputEffectTo._SSCCTexture ? "OUTPUT_TO_TEXTURE" : "__"
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};
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}
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//-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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static Mesh s_FullscreenMesh = null;
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static Mesh fullscreenMesh
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{
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get
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{
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if (s_FullscreenMesh != null)
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return s_FullscreenMesh;
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float topV = 1.0f;
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float bottomV = 0.0f;
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s_FullscreenMesh = new Mesh { name = "Fullscreen Quad" };
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s_FullscreenMesh.SetVertices(new List<Vector3>
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{
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new Vector3(-1.0f, -1.0f, 0.0f),
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new Vector3(-1.0f, 1.0f, 0.0f),
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new Vector3(1.0f, -1.0f, 0.0f),
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new Vector3(1.0f, 1.0f, 0.0f)
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});
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s_FullscreenMesh.SetUVs(0, new List<Vector2>
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{
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new Vector2(0.0f, bottomV),
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new Vector2(0.0f, topV),
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new Vector2(1.0f, bottomV),
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new Vector2(1.0f, topV)
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});
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s_FullscreenMesh.SetIndices(new[] { 0, 1, 2, 2, 1, 3 }, MeshTopology.Triangles, 0, false);
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s_FullscreenMesh.UploadMeshData(true);
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return s_FullscreenMesh;
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}
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}
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public void BlitFullscreenMesh(CommandBuffer cmd, RenderTargetIdentifier source, RenderTargetIdentifier destination, Material material, int passIndex = 0)
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{
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cmd.SetGlobalTexture(ShaderProperties.mainTex, source);
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cmd.SetRenderTarget(destination, 0, CubemapFace.Unknown, -1);
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cmd.DrawMesh(/*RenderingUtils.*/fullscreenMesh, Matrix4x4.identity, material, 0, passIndex);
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}
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public void BlitFullscreenMesh(CommandBuffer cmd, RenderTargetIdentifier destination, Material material, int passIndex = 0)
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{
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cmd.SetRenderTarget(destination, 0, CubemapFace.Unknown, -1);
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cmd.DrawMesh(/*RenderingUtils.*/fullscreenMesh, Matrix4x4.identity, material, 0, passIndex);
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}
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}
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[SerializeField]
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[Space(15)]
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[Header("You can now add SSCC to your Post Process Volume.")]
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Shader shader;
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private SSCCRenderPass renderPass;
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public override void Create()
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{
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if (!isActive)
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{
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renderPass?.Cleanup();
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renderPass = null;
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return;
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}
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name = "SSCC";
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renderPass = new SSCCRenderPass();
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}
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void OnDisable()
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{
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renderPass?.Cleanup();
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}
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#if URP_10_0_0_OR_NEWER
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protected override void Dispose(bool disposing)
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{
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renderPass?.Cleanup();
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renderPass = null;
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}
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#endif
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public override void AddRenderPasses(ScriptableRenderer renderer, ref RenderingData renderingData)
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{
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shader = Shader.Find("Hidden/Universal Render Pipeline/SSCC");
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if (shader == null)
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{
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Debug.LogWarning("SSCC shader was not found. Please ensure it compiles correctly");
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return;
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}
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if (renderingData.cameraData.postProcessEnabled)
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{
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renderPass.Setup(shader, renderer, renderingData);
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renderer.EnqueuePass(renderPass);
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}
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}
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}
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}
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