936 lines
47 KiB
C#
936 lines
47 KiB
C#
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using System;
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using Unity.Mathematics;
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using UnityEngine.Experimental.Rendering;
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using UnityEngine.Rendering.RenderGraphModule;
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namespace UnityEngine.Rendering.HighDefinition
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{
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partial class VolumetricCloudsSystem
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{
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// Flag that allows us to track the resources that have been allocated
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bool m_ActiveVolumetricClouds = false;
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HDRenderPipeline m_RenderPipeline;
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VolumetricCloudsRuntimeResources m_RuntimeResources;
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// Intermediate values for ambient probe evaluation
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ZonalHarmonicsL2 m_PhaseZHClouds;
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// Cloud preset maps
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Texture2D m_CustomPresetMap;
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Texture2D m_CustomLutPresetMap;
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const int k_CustomLutMapResolution = 64;
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readonly Color[] m_CustomLutColorArray = new Color[k_CustomLutMapResolution];
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// Compute shader kernels
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ComputeShader m_VolumetricCloudsCS;
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ComputeShader m_VolumetricCloudsTraceCS;
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// Cloud rendering kernels
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int m_CloudRenderKernel;
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// Reprojection / First upscale
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int m_ReprojectCloudsKernel;
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int m_ReprojectCloudsRejectionKernel;
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int m_PreUpscaleCloudsKernel;
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// Second Upscale + Fog
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int m_UpscaleCloudsKernel;
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int m_UpscaleCloudsPerceptualKernel;
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// Fog only
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int m_CombineCloudsKernel;
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int m_CombineCloudsPerceptualKernel;
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// Combine pass via hardware blending.
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Material m_CloudCombinePass;
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LocalKeyword m_OutputFogTransmittanceKeyword;
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float m_CloudsAnimationLastTime;
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internal VolumetricClouds.AnimationData m_CloudsAnimationData;
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struct VolumetricCloudsCameraData
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{
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public TVolumetricCloudsCameraType cameraType;
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public int traceWidth;
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public int traceHeight;
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public int intermediateWidth;
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public int intermediateHeight;
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public int finalWidth;
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public int finalHeight;
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public bool enableExposureControl;
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public bool lowResolution;
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public bool enableIntegration;
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}
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public void Initialize(HDRenderPipeline hdPipeline)
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{
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m_RenderPipeline = hdPipeline;
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m_ActiveVolumetricClouds = hdPipeline.asset.currentPlatformRenderPipelineSettings.supportVolumetricClouds;
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if (!m_ActiveVolumetricClouds)
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return;
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m_RuntimeResources = GraphicsSettings.GetRenderPipelineSettings<VolumetricCloudsRuntimeResources>();
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// Allocate the buffers for ambient probe evaluation
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m_PhaseZHClouds = new ZonalHarmonicsL2();
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m_PhaseZHClouds.coeffs = new float[3];
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// Grab the kernels we need
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m_VolumetricCloudsCS = m_RuntimeResources.volumetricCloudsCS;
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m_ReprojectCloudsKernel = m_VolumetricCloudsCS.FindKernel("ReprojectClouds");
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m_ReprojectCloudsRejectionKernel = m_VolumetricCloudsCS.FindKernel("ReprojectCloudsRejection");
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m_PreUpscaleCloudsKernel = m_VolumetricCloudsCS.FindKernel("PreUpscaleClouds");
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m_UpscaleCloudsKernel = m_VolumetricCloudsCS.FindKernel("UpscaleClouds");
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m_UpscaleCloudsPerceptualKernel = m_VolumetricCloudsCS.FindKernel("UpscaleCloudsPerceptual");
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m_CombineCloudsKernel = m_VolumetricCloudsCS.FindKernel("CombineClouds");
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m_CombineCloudsPerceptualKernel = m_VolumetricCloudsCS.FindKernel("CombineCloudsPerceptual");
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// Create the material needed for the combination
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m_CloudCombinePass = CoreUtils.CreateEngineMaterial(m_RuntimeResources.volumetricCloudsCombinePS);
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m_OutputFogTransmittanceKeyword = new LocalKeyword(m_CloudCombinePass.shader, "OUTPUT_TRANSMITTANCE_BUFFER");
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m_VolumetricCloudsTraceCS = m_RuntimeResources.volumetricCloudsTraceCS;
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m_CloudRenderKernel = m_VolumetricCloudsTraceCS.FindKernel("RenderClouds");
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// Allocate all the texture initially
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AllocatePresetTextures();
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// Initialize cloud animation
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m_CloudsAnimationLastTime = -1.0f;
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m_CloudsAnimationData = new()
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{
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cloudOffset = new Vector2(0.0f, 0.0f),
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verticalShapeOffset = 0.0f,
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verticalErosionOffset = 0.0f,
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};
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// Initialize the additional sub components
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InitializeVolumetricCloudsMap();
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InitializeVolumetricCloudsShadows();
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InitializeVolumetricCloudsAmbientProbe();
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}
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public void Cleanup()
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{
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if (!m_ActiveVolumetricClouds)
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return;
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// Destroy allocated resources
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CoreUtils.Destroy(m_CloudCombinePass);
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CoreUtils.Destroy(m_CustomPresetMap);
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CoreUtils.Destroy(m_CustomLutPresetMap);
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// Release the additional sub components
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ReleaseVolumetricCloudsMap();
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ReleaseVolumetricCloudsAmbientProbe();
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}
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void AllocatePresetTextures()
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{
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m_CustomPresetMap = new Texture2D(1, 1, GraphicsFormat.R8G8B8A8_UNorm, TextureCreationFlags.None) { name = "Default Cloud Map Texture" };
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m_CustomPresetMap.SetPixel(0, 0, new Color(0.9f, 0.0f, 0.25f, 1.0f));
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m_CustomPresetMap.Apply();
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}
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float Square(float x)
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{
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return x * x;
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}
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float ComputeNormalizationFactor(float earthRadius, float lowerCloudRadius)
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{
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// TODO: figure out what this function does
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const float k_EarthRadius = 6378100.0f;
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return Mathf.Sqrt((k_EarthRadius + lowerCloudRadius) * (k_EarthRadius + lowerCloudRadius) - k_EarthRadius * earthRadius);
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}
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internal struct CloudModelData
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{
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public float densityMultiplier;
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// Shape
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public float shapeFactor;
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public float shapeScale;
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// Erosion
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public float erosionFactor;
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public float erosionScale;
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public VolumetricClouds.CloudErosionNoise erosionNoise;
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// Micro erosion
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public float microErosionFactor;
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public float microErosionScale;
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}
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float ErosionNoiseTypeToErosionCompensation(VolumetricClouds.CloudErosionNoise noiseType)
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{
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switch (noiseType)
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{
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case VolumetricClouds.CloudErosionNoise.Worley32:
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return 1.0f;
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case VolumetricClouds.CloudErosionNoise.Perlin32:
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return 0.75f;
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}
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return 1.0f;
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}
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void PrepareCustomLutData(in VolumetricClouds clouds)
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{
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if (m_CustomLutPresetMap == null)
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{
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m_CustomLutPresetMap = new Texture2D(1, k_CustomLutMapResolution, GraphicsFormat.R16G16B16A16_SFloat, TextureCreationFlags.None)
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{
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name = "Custom LUT Curve",
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filterMode = FilterMode.Bilinear,
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wrapMode = TextureWrapMode.Clamp
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};
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m_CustomLutPresetMap.hideFlags = HideFlags.HideAndDontSave;
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}
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var pixels = m_CustomLutColorArray;
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var densityCurve = clouds.densityCurve.value;
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var erosionCurve = clouds.erosionCurve.value;
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var ambientOcclusionCurve = clouds.ambientOcclusionCurve.value;
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if (densityCurve == null || densityCurve.length == 0)
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{
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for (int i = 0; i < k_CustomLutMapResolution; i++)
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pixels[i] = Color.white;
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}
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else
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{
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float step = 1.0f / (k_CustomLutMapResolution - 1f);
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for (int i = 0; i < k_CustomLutMapResolution; i++)
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{
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float currTime = step * i;
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float density = (i == 0 || i == k_CustomLutMapResolution - 1) ? 0 : Mathf.Clamp(densityCurve.Evaluate(currTime), 0.0f, 1.0f);
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float erosion = Mathf.Clamp(erosionCurve.Evaluate(currTime), 0.0f, 1.0f);
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float ambientOcclusion = Mathf.Clamp(1.0f - ambientOcclusionCurve.Evaluate(currTime), 0.0f, 1.0f);
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pixels[i] = new Color(density, erosion, ambientOcclusion, 1.0f);
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}
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}
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m_CustomLutPresetMap.SetPixels(pixels);
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m_CustomLutPresetMap.Apply();
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}
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// Function to evaluate if a camera should have volumetric clouds
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static internal bool HasVolumetricClouds(HDCamera hdCamera, in VolumetricClouds settings)
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{
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// If the current volume does not enable the feature, quit right away.
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return hdCamera.frameSettings.IsEnabled(FrameSettingsField.VolumetricClouds) && settings.enable.value;
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}
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static internal bool HasVolumetricClouds(HDCamera hdCamera)
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{
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VolumetricClouds settings = hdCamera.volumeStack.GetComponent<VolumetricClouds>();
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// If the current volume does not enable the feature, quit right away.
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return HasVolumetricClouds(hdCamera, in settings);
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}
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Texture2D GetPresetCloudMapTexture()
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{
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// Textures may become null if a new scene was loaded in the editor (and maybe other reasons).
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if (m_CustomPresetMap == null || Object.ReferenceEquals(m_CustomPresetMap, null))
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AllocatePresetTextures();
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return m_CustomPresetMap;
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}
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internal enum TVolumetricCloudsCameraType
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{
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Default,
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RealtimeReflection,
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BakedReflection,
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Sky
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};
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TVolumetricCloudsCameraType GetCameraType(HDCamera hdCamera)
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{
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if (hdCamera.camera.cameraType == CameraType.Reflection)
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{
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if (hdCamera.realtimeReflectionProbe)
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return TVolumetricCloudsCameraType.RealtimeReflection;
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else
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return TVolumetricCloudsCameraType.BakedReflection;
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}
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else
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return TVolumetricCloudsCameraType.Default;
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}
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CloudModelData GetCloudModelData(VolumetricClouds settings)
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{
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CloudModelData cloudModelData;
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// General
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cloudModelData.densityMultiplier = settings.densityMultiplier.value;
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// Shape
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cloudModelData.shapeFactor = settings.shapeFactor.value;
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cloudModelData.shapeScale = settings.shapeScale.value;
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// Erosion
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cloudModelData.erosionFactor = settings.erosionFactor.value;
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cloudModelData.erosionScale = settings.erosionScale.value;
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cloudModelData.erosionNoise = settings.erosionNoiseType.value;
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// Micro erosion
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cloudModelData.microErosionFactor = settings.microErosionFactor.value;
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cloudModelData.microErosionScale = settings.microErosionScale.value;
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return cloudModelData;
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}
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void UpdateShaderVariablesClouds(ref ShaderVariablesClouds cb, HDCamera hdCamera, VolumetricClouds settings,
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in VolumetricCloudsCameraData cameraData, in CloudModelData cloudModelData, bool shadowPass)
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{
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// Planet properties
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cb._LowestCloudAltitude = hdCamera.planet.radius + settings.bottomAltitude.value;
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cb._HighestCloudAltitude = cb._LowestCloudAltitude + settings.altitudeRange.value;
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cb._NumPrimarySteps = settings.numPrimarySteps.value;
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cb._NumLightSteps = settings.numLightSteps.value;
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cb._MaxStepSize = settings.altitudeRange.value / 8.0f;
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cb._CloudMapTiling.Set(settings.cloudTiling.value.x, settings.cloudTiling.value.y, settings.cloudOffset.value.x, settings.cloudOffset.value.y);
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cb._ScatteringTint = Color.white - settings.scatteringTint.value * 0.75f;
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cb._PowderEffectIntensity = settings.powderEffectIntensity.value;
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cb._NormalizationFactor = ComputeNormalizationFactor(hdCamera.planet.radius, (cb._LowestCloudAltitude + cb._HighestCloudAltitude) * 0.5f - hdCamera.planet.radius);
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// We need 16 samples per pixel and we are alternating between 4 pixels (16 x 4 = 64)
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int frameIndex = HDRenderPipeline.RayTracingFrameIndex(hdCamera, 64);
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cb._AccumulationFrameIndex = frameIndex / 4;
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cb._SubPixelIndex = frameIndex % 4;
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// PB Sun/Sky settings
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Light currentSun = m_RenderPipeline.GetMainLight();
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HDAdditionalLightData additionalLightData = null;
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if (currentSun != null)
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{
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// Grab the target sun additional data
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additionalLightData = m_RenderPipeline.GetMainLightAdditionalData();
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cb._SunLightColor = additionalLightData.EvaluateLightColor() * settings.sunLightDimmer.value * additionalLightData.lightDimmer;
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cb._SunDirection = -currentSun.transform.forward;
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}
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else
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{
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cb._SunLightColor = Vector3.zero;
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cb._SunDirection = Vector3.up;
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}
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// Compute the theta angle for the wind direction
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float theta = settings.orientation.GetValue(hdCamera) / 180.0f * Mathf.PI;
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// We apply a minus to see something moving in the right direction
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cb._WindDirection = new Vector2(-Mathf.Cos(theta), -Mathf.Sin(theta));
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cb._WindVector = m_CloudsAnimationData.cloudOffset;
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cb._VerticalShapeWindDisplacement = m_CloudsAnimationData.verticalShapeOffset;
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cb._VerticalErosionWindDisplacement = m_CloudsAnimationData.verticalErosionOffset;
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cb._LargeWindSpeed = settings.cloudMapSpeedMultiplier.value;
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cb._MediumWindSpeed = settings.shapeSpeedMultiplier.value;
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cb._SmallWindSpeed = settings.erosionSpeedMultiplier.value;
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cb._AltitudeDistortion = settings.altitudeDistortion.value * 0.25f;
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cb._MultiScattering = 1.0f - settings.multiScattering.value * 0.95f;
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// The density multiplier is not used linearly
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cb._DensityMultiplier = cloudModelData.densityMultiplier * cloudModelData.densityMultiplier * 2.0f;
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// Shape
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cb._ShapeFactor = cloudModelData.shapeFactor;
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cb._ShapeScale = cloudModelData.shapeScale;
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cb._ShapeNoiseOffset = new Vector2(settings.shapeOffset.value.x, settings.shapeOffset.value.z);
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cb._VerticalShapeNoiseOffset = settings.shapeOffset.value.y;
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// Erosion
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cb._ErosionFactor = cloudModelData.erosionFactor;
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cb._ErosionScale = cloudModelData.erosionScale;
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// Micro erosion
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cb._MicroErosionFactor = cloudModelData.microErosionFactor;
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cb._MicroErosionScale = cloudModelData.microErosionScale;
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|
// If the sun has moved more than 2.0°, reduce significantly the history accumulation
|
||
|
|
float sunAngleDifference = 0.0f;
|
||
|
|
if (additionalLightData != null)
|
||
|
|
sunAngleDifference = Quaternion.Angle(additionalLightData.previousTransform.rotation, additionalLightData.transform.localToWorldMatrix.rotation);
|
||
|
|
cb._CloudHistoryInvalidation = Mathf.Lerp(1.0f, 0.0f, Mathf.Clamp((sunAngleDifference) / 10.0f, 0.0f, 1.0f));
|
||
|
|
cb._TemporalAccumulationFactor = settings.temporalAccumulationFactor.value;
|
||
|
|
cb._ImprovedTransmittanceBlend = settings.perceptualBlending.value;
|
||
|
|
|
||
|
|
if (settings.fadeInMode.value == VolumetricClouds.CloudFadeInMode.Automatic)
|
||
|
|
{
|
||
|
|
cb._FadeInStart = Mathf.Max((cb._HighestCloudAltitude - cb._LowestCloudAltitude) * 0.2f, hdCamera.camera.nearClipPlane);
|
||
|
|
cb._FadeInDistance = (cb._HighestCloudAltitude - cb._LowestCloudAltitude) * 0.3f;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
cb._FadeInStart = Mathf.Max(settings.fadeInStart.value, hdCamera.camera.nearClipPlane);
|
||
|
|
cb._FadeInDistance = settings.fadeInDistance.value;
|
||
|
|
}
|
||
|
|
|
||
|
|
cb._FinalScreenSize.Set((float)cameraData.finalWidth, (float)cameraData.finalHeight, 1.0f / (float)cameraData.finalWidth, 1.0f / (float)cameraData.finalHeight);
|
||
|
|
cb._IntermediateScreenSize.Set((float)cameraData.intermediateWidth, (float)cameraData.intermediateHeight, 1.0f / (float)cameraData.intermediateWidth, 1.0f / (float)cameraData.intermediateHeight);
|
||
|
|
cb._TraceScreenSize.Set((float)cameraData.traceWidth, (float)cameraData.traceHeight, 1.0f / (float)cameraData.traceWidth, 1.0f / (float)cameraData.traceHeight);
|
||
|
|
|
||
|
|
cb._ErosionOcclusion = settings.erosionOcclusion.value;
|
||
|
|
cb._ErosionFactorCompensation = ErosionNoiseTypeToErosionCompensation(settings.erosionNoiseType.value);
|
||
|
|
|
||
|
|
if (!shadowPass)
|
||
|
|
UpdateMatricesForXR(ref cb, hdCamera);
|
||
|
|
|
||
|
|
Vector3 cameraPosPS = hdCamera.mainViewConstants.worldSpaceCameraPos - hdCamera.planet.center;
|
||
|
|
Vector3 prevCameraPosPS = cameraPosPS + hdCamera.mainViewConstants.prevWorldSpaceCameraPos; // prev pos is camera relative
|
||
|
|
|
||
|
|
float previousNearPlane = math.max(GetCloudNearPlane(prevCameraPosPS, cb._LowestCloudAltitude, cb._HighestCloudAltitude), hdCamera.camera.nearClipPlane);
|
||
|
|
cb._CloudNearPlane = math.max(GetCloudNearPlane(cameraPosPS, cb._LowestCloudAltitude, cb._HighestCloudAltitude), hdCamera.camera.nearClipPlane);
|
||
|
|
cb._NearPlaneReprojection = cb._CloudNearPlane / previousNearPlane;
|
||
|
|
|
||
|
|
cb._EnableFastToneMapping = cameraData.enableExposureControl ? 1 : 0;
|
||
|
|
|
||
|
|
bool quarterRes = cameraData.intermediateWidth != cameraData.finalWidth;
|
||
|
|
cb._LowResolutionEvaluation = cameraData.lowResolution ? 1 : 0;
|
||
|
|
cb._EnableIntegration = cameraData.enableIntegration ? 1 : 0;
|
||
|
|
cb._CameraSpace = hdCamera.planet.renderingSpace == RenderingSpace.Camera ? 1 : 0;
|
||
|
|
cb._ValidSceneDepth = cameraData.cameraType != TVolumetricCloudsCameraType.Sky ? 1 : 0;
|
||
|
|
cb._IntermediateResolutionScale = cameraData.intermediateWidth == cameraData.finalWidth ? 1u : 2u;
|
||
|
|
cb._ReprojDepthMipOffset = hdCamera.depthBufferMipChainInfo.mipLevelOffsetsCheckerboard[quarterRes ? 1 : 0];
|
||
|
|
|
||
|
|
unsafe
|
||
|
|
{
|
||
|
|
for (int p = 0; p < 4; ++p)
|
||
|
|
for (int i = 0; i < 9; ++i)
|
||
|
|
cb._DistanceBasedWeights[12 * p + i] = BilateralUpsample.distanceBasedWeights_3x3[9 * p + i];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
unsafe internal void UpdateMatricesForXR(ref ShaderVariablesClouds cb, HDCamera hdCamera)
|
||
|
|
{
|
||
|
|
for (int viewIndex = 0; viewIndex < hdCamera.viewCount; ++viewIndex)
|
||
|
|
{
|
||
|
|
var vp = hdCamera.m_XRViewConstants[viewIndex].prevViewProjMatrix;
|
||
|
|
|
||
|
|
// Correct prev view proj matrix for local mode
|
||
|
|
if (hdCamera.planet.renderingSpace == RenderingSpace.Camera)
|
||
|
|
vp *= Matrix4x4.Translate(new Vector3(0.0f, hdCamera.m_XRViewConstants[viewIndex].prevWorldSpaceCameraPos.y, 0.0f));
|
||
|
|
|
||
|
|
for (int j = 0; j < 16; ++j)
|
||
|
|
{
|
||
|
|
cb._CloudsPixelCoordToViewDirWS[viewIndex * 16 + j] = hdCamera.m_XRViewConstants[viewIndex].pixelCoordToViewDirWS[j];
|
||
|
|
cb._CameraPrevViewProjection[viewIndex * 16 + j] = vp[j];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
struct VolumetricCloudCommonData
|
||
|
|
{
|
||
|
|
// Resolution parameters
|
||
|
|
public TVolumetricCloudsCameraType cameraType;
|
||
|
|
public bool enableExposureControl;
|
||
|
|
public bool perceptualBlending;
|
||
|
|
public bool microErosion;
|
||
|
|
public bool simplePreset;
|
||
|
|
public bool pbrSkyActive;
|
||
|
|
public bool traceForSky;
|
||
|
|
|
||
|
|
// Static textures
|
||
|
|
public Texture3D worley128RGBA;
|
||
|
|
public Texture3D erosionNoise;
|
||
|
|
public Texture cloudMapTexture;
|
||
|
|
public Texture cloudLutTexture;
|
||
|
|
public BlueNoise.DitheredTextureSet ditheredTextureSet;
|
||
|
|
public Light sunLight;
|
||
|
|
|
||
|
|
// Compute shader and kernels
|
||
|
|
public ComputeShader volumetricCloudsCS;
|
||
|
|
public ComputeShader volumetricCloudsTraceCS;
|
||
|
|
public int renderKernel;
|
||
|
|
|
||
|
|
// Cloud constant buffer buffer
|
||
|
|
public ShaderVariablesClouds cloudsCB;
|
||
|
|
}
|
||
|
|
|
||
|
|
Texture3D ErosionNoiseTypeToTexture(VolumetricClouds.CloudErosionNoise noiseType)
|
||
|
|
{
|
||
|
|
switch (noiseType)
|
||
|
|
{
|
||
|
|
case VolumetricClouds.CloudErosionNoise.Worley32:
|
||
|
|
return m_RuntimeResources.worleyNoise32RGB;
|
||
|
|
case VolumetricClouds.CloudErosionNoise.Perlin32:
|
||
|
|
return m_RuntimeResources.perlinNoise32RGB;
|
||
|
|
}
|
||
|
|
return m_RuntimeResources.worleyNoise32RGB;
|
||
|
|
}
|
||
|
|
|
||
|
|
void FillVolumetricCloudsCommonData(HDCamera hdCamera, bool enableExposureControl, VolumetricClouds settings, TVolumetricCloudsCameraType cameraType, in CloudModelData cloudModelData, ref VolumetricCloudCommonData commonData)
|
||
|
|
{
|
||
|
|
commonData.cameraType = cameraType;
|
||
|
|
commonData.volumetricCloudsCS = m_VolumetricCloudsCS;
|
||
|
|
commonData.volumetricCloudsTraceCS = m_VolumetricCloudsTraceCS;
|
||
|
|
commonData.renderKernel = m_CloudRenderKernel;
|
||
|
|
commonData.pbrSkyActive = hdCamera.volumeStack.GetComponent<VisualEnvironment>().skyType.value == (int)SkyType.PhysicallyBased;
|
||
|
|
commonData.traceForSky = cameraType == TVolumetricCloudsCameraType.Sky;
|
||
|
|
commonData.perceptualBlending = cameraType == TVolumetricCloudsCameraType.Default && !hdCamera.msaaEnabled && settings.perceptualBlending.value > 0.0f;
|
||
|
|
|
||
|
|
// Static textures
|
||
|
|
commonData.simplePreset = settings.cloudControl.value == VolumetricClouds.CloudControl.Simple;
|
||
|
|
if (commonData.simplePreset)
|
||
|
|
{
|
||
|
|
commonData.cloudMapTexture = GetPresetCloudMapTexture();
|
||
|
|
PrepareCustomLutData(settings);
|
||
|
|
commonData.cloudLutTexture = m_CustomLutPresetMap;
|
||
|
|
commonData.microErosion = settings.cloudSimpleMode.value == VolumetricClouds.CloudSimpleMode.Quality;
|
||
|
|
}
|
||
|
|
else if (settings.cloudControl.value == VolumetricClouds.CloudControl.Advanced)
|
||
|
|
{
|
||
|
|
commonData.cloudMapTexture = m_AdvancedCloudMap;
|
||
|
|
commonData.cloudLutTexture = m_RuntimeResources.cloudLutRainAO;
|
||
|
|
commonData.microErosion = settings.microErosion.value;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
commonData.cloudMapTexture = settings.cloudMap.value != null ? settings.cloudMap.value : Texture2D.blackTexture;
|
||
|
|
commonData.cloudLutTexture = settings.cloudLut.value != null ? settings.cloudLut.value : Texture2D.blackTexture;
|
||
|
|
commonData.microErosion = settings.microErosion.value;
|
||
|
|
}
|
||
|
|
|
||
|
|
commonData.worley128RGBA = m_RuntimeResources.worleyNoise128RGBA;
|
||
|
|
commonData.erosionNoise = ErosionNoiseTypeToTexture(cloudModelData.erosionNoise);
|
||
|
|
commonData.ditheredTextureSet = m_RenderPipeline.GetBlueNoiseManager().DitheredTextureSet8SPP();
|
||
|
|
commonData.sunLight = m_RenderPipeline.GetMainLight();
|
||
|
|
commonData.enableExposureControl = enableExposureControl;
|
||
|
|
}
|
||
|
|
|
||
|
|
void UpdateVolumetricClouds(HDCamera hdCamera, in VolumetricClouds settings)
|
||
|
|
{
|
||
|
|
// don't update cloud animation for anything but the main camera
|
||
|
|
if (GetCameraType(hdCamera) != TVolumetricCloudsCameraType.Default)
|
||
|
|
return;
|
||
|
|
|
||
|
|
// The system needs to updated if the previous frame history is valid
|
||
|
|
if (EvaluateVolumetricCloudsHistoryValidity(hdCamera))
|
||
|
|
{
|
||
|
|
float totalTime = Application.isPlaying ? Time.time : Time.realtimeSinceStartup;
|
||
|
|
float deltaTime = totalTime - m_CloudsAnimationLastTime;
|
||
|
|
if (m_CloudsAnimationLastTime == -1.0f)
|
||
|
|
deltaTime = 0.0f;
|
||
|
|
|
||
|
|
#if UNITY_EDITOR
|
||
|
|
if (UnityEditor.EditorApplication.isPaused)
|
||
|
|
deltaTime = 0.0f;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// Conversion from km/h to m/s is the 0.277778f factor
|
||
|
|
// We apply a minus to see something moving in the right direction
|
||
|
|
deltaTime *= -0.277778f;
|
||
|
|
|
||
|
|
// Compute the wind direction
|
||
|
|
float theta = settings.orientation.GetValue(hdCamera) / 180.0f * Mathf.PI;
|
||
|
|
Vector2 windDirection = new Vector2(Mathf.Cos(theta), Mathf.Sin(theta));
|
||
|
|
|
||
|
|
// Animate the offsets
|
||
|
|
m_CloudsAnimationLastTime = totalTime;
|
||
|
|
m_CloudsAnimationData.cloudOffset += deltaTime * settings.globalWindSpeed.GetValue(hdCamera) * windDirection;
|
||
|
|
m_CloudsAnimationData.verticalShapeOffset += deltaTime * settings.verticalShapeWindSpeed.value;
|
||
|
|
m_CloudsAnimationData.verticalErosionOffset += deltaTime * settings.verticalErosionWindSpeed.value;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
class VolumetricCloudsCombineOpaqueData
|
||
|
|
{
|
||
|
|
// Material
|
||
|
|
public Material cloudsCombineMaterial;
|
||
|
|
public bool perPixelSorting;
|
||
|
|
public Matrix4x4 pixelCoordToViewDir;
|
||
|
|
|
||
|
|
// Input buffers
|
||
|
|
public TextureHandle volumetricCloudsLightingTexture;
|
||
|
|
public TextureHandle volumetricCloudsDepthTexture;
|
||
|
|
public TextureHandle depthAndStencil;
|
||
|
|
|
||
|
|
public BufferHandle waterLine;
|
||
|
|
public BufferHandle cameraHeightBuffer;
|
||
|
|
public BufferHandle waterSurfaceProfiles;
|
||
|
|
public TextureHandle waterGBuffer3;
|
||
|
|
|
||
|
|
public bool needOpticalFogTransmittance;
|
||
|
|
public LocalKeyword outputFogTransmittanceKeyword;
|
||
|
|
}
|
||
|
|
|
||
|
|
internal void CombineVolumetricClouds(RenderGraph renderGraph, HDCamera hdCamera, TextureHandle colorBuffer, TextureHandle resolvedDepthBuffer, in HDRenderPipeline.TransparentPrepassOutput transparentPrepass, ref TextureHandle opticalFogTransmittance)
|
||
|
|
{
|
||
|
|
if (!transparentPrepass.clouds.valid)
|
||
|
|
return;
|
||
|
|
|
||
|
|
using (var builder = renderGraph.AddRenderPass<VolumetricCloudsCombineOpaqueData>("Volumetric Clouds Combine", out var passData, ProfilingSampler.Get(HDProfileId.VolumetricCloudsCombine)))
|
||
|
|
{
|
||
|
|
// Parameters
|
||
|
|
passData.cloudsCombineMaterial = m_CloudCombinePass;
|
||
|
|
passData.perPixelSorting = transparentPrepass.enablePerPixelSorting;
|
||
|
|
passData.pixelCoordToViewDir = hdCamera.mainViewConstants.pixelCoordToViewDirWS;
|
||
|
|
|
||
|
|
// Input buffers
|
||
|
|
passData.volumetricCloudsLightingTexture = builder.ReadTexture(transparentPrepass.clouds.lightingBuffer);
|
||
|
|
passData.volumetricCloudsDepthTexture = builder.ReadTexture(transparentPrepass.clouds.depthBuffer);
|
||
|
|
|
||
|
|
if (passData.perPixelSorting)
|
||
|
|
{
|
||
|
|
passData.depthAndStencil = builder.ReadTexture(resolvedDepthBuffer);
|
||
|
|
|
||
|
|
passData.waterLine = builder.ReadBuffer(transparentPrepass.waterLine);
|
||
|
|
passData.cameraHeightBuffer = builder.ReadBuffer(transparentPrepass.waterGBuffer.cameraHeight);
|
||
|
|
passData.waterSurfaceProfiles = builder.ReadBuffer(transparentPrepass.waterSurfaceProfiles);
|
||
|
|
passData.waterGBuffer3 = builder.ReadTexture(transparentPrepass.waterGBuffer.waterGBuffer3);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Output buffers
|
||
|
|
builder.UseColorBuffer(colorBuffer, 0);
|
||
|
|
int opticalFogBufferIndex = 1;
|
||
|
|
|
||
|
|
if (passData.perPixelSorting)
|
||
|
|
{
|
||
|
|
builder.UseDepthBuffer(transparentPrepass.beforeRefraction, DepthAccess.Read); // Dummy buffer to avoid 'Setting MRT without a depth buffer is not supported'
|
||
|
|
builder.UseColorBuffer(transparentPrepass.beforeRefraction, 1);
|
||
|
|
builder.UseColorBuffer(transparentPrepass.beforeRefractionAlpha, 2);
|
||
|
|
opticalFogBufferIndex = 3;
|
||
|
|
}
|
||
|
|
|
||
|
|
passData.needOpticalFogTransmittance = LensFlareCommonSRP.IsCloudLayerOpacityNeeded(hdCamera.camera);
|
||
|
|
passData.outputFogTransmittanceKeyword = m_OutputFogTransmittanceKeyword;
|
||
|
|
|
||
|
|
if (passData.needOpticalFogTransmittance)
|
||
|
|
{
|
||
|
|
if (!opticalFogTransmittance.IsValid())
|
||
|
|
opticalFogTransmittance = renderGraph.CreateTexture(HDRenderPipeline.GetOpticalFogTransmittanceDesc(hdCamera));
|
||
|
|
builder.UseColorBuffer(opticalFogTransmittance, opticalFogBufferIndex);
|
||
|
|
}
|
||
|
|
|
||
|
|
builder.SetRenderFunc(
|
||
|
|
(VolumetricCloudsCombineOpaqueData data, RenderGraphContext ctx) =>
|
||
|
|
{
|
||
|
|
data.cloudsCombineMaterial.SetTexture(HDShaderIDs._VolumetricCloudsLightingTexture, data.volumetricCloudsLightingTexture);
|
||
|
|
data.cloudsCombineMaterial.SetTexture(HDShaderIDs._VolumetricCloudsDepthTexture, data.volumetricCloudsDepthTexture);
|
||
|
|
data.cloudsCombineMaterial.SetMatrix(HDShaderIDs._PixelCoordToViewDirWS, data.pixelCoordToViewDir);
|
||
|
|
|
||
|
|
if (data.perPixelSorting)
|
||
|
|
{
|
||
|
|
data.cloudsCombineMaterial.SetTexture(HDShaderIDs._RefractiveDepthBuffer, data.depthAndStencil, RenderTextureSubElement.Depth);
|
||
|
|
data.cloudsCombineMaterial.SetTexture(HDShaderIDs._StencilTexture, data.depthAndStencil, RenderTextureSubElement.Stencil);
|
||
|
|
data.cloudsCombineMaterial.SetBuffer(HDShaderIDs._WaterCameraHeightBuffer, data.cameraHeightBuffer);
|
||
|
|
data.cloudsCombineMaterial.SetBuffer(HDShaderIDs._WaterSurfaceProfiles, data.waterSurfaceProfiles);
|
||
|
|
data.cloudsCombineMaterial.SetTexture(HDShaderIDs._WaterGBufferTexture3, data.waterGBuffer3);
|
||
|
|
data.cloudsCombineMaterial.SetBuffer(HDShaderIDs._WaterLineBuffer, data.waterLine);
|
||
|
|
}
|
||
|
|
|
||
|
|
ctx.cmd.SetKeyword(data.cloudsCombineMaterial, data.outputFogTransmittanceKeyword, data.needOpticalFogTransmittance);
|
||
|
|
|
||
|
|
ctx.cmd.DrawProcedural(Matrix4x4.identity, data.cloudsCombineMaterial, data.perPixelSorting ? 7 : 0, MeshTopology.Triangles, 3);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
internal struct VolumetricCloudsOutput
|
||
|
|
{
|
||
|
|
public TextureHandle lightingBuffer;
|
||
|
|
public TextureHandle depthBuffer;
|
||
|
|
public bool valid;
|
||
|
|
}
|
||
|
|
|
||
|
|
internal void RenderVolumetricClouds(RenderGraph renderGraph, HDCamera hdCamera, TextureHandle colorBuffer, TextureHandle depthPyramid,
|
||
|
|
ref HDRenderPipeline.TransparentPrepassOutput transparentPrepass, ref TextureHandle opticalFogTransmittance)
|
||
|
|
{
|
||
|
|
// If the current volume does not enable the feature, quit right away.
|
||
|
|
VolumetricClouds settings = hdCamera.volumeStack.GetComponent<VolumetricClouds>();
|
||
|
|
bool skipCloudRendering = m_RenderPipeline.m_CurrentDebugDisplaySettings.DebugHideVolumetricClouds(hdCamera) || !HasVolumetricClouds(hdCamera, in settings);
|
||
|
|
#if UNITY_EDITOR
|
||
|
|
skipCloudRendering |= !hdCamera.camera.renderCloudsInSceneView;
|
||
|
|
#endif
|
||
|
|
if (skipCloudRendering)
|
||
|
|
{
|
||
|
|
transparentPrepass.clouds = new VolumetricCloudsOutput()
|
||
|
|
{
|
||
|
|
lightingBuffer = renderGraph.defaultResources.whiteTextureXR,
|
||
|
|
depthBuffer = renderGraph.defaultResources.blackTextureXR,
|
||
|
|
valid = false,
|
||
|
|
};
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Make sure the volumetric clouds are animated properly
|
||
|
|
UpdateVolumetricClouds(hdCamera, in settings);
|
||
|
|
|
||
|
|
// Evaluate which version of the clouds we should be using
|
||
|
|
TVolumetricCloudsCameraType cameraType = GetCameraType(hdCamera);
|
||
|
|
bool accumulationClouds = cameraType == TVolumetricCloudsCameraType.Default;
|
||
|
|
bool fullResolutionClouds = cameraType == TVolumetricCloudsCameraType.BakedReflection;
|
||
|
|
|
||
|
|
// Render the clouds
|
||
|
|
if (accumulationClouds)
|
||
|
|
transparentPrepass.clouds = RenderVolumetricClouds_Accumulation(renderGraph, hdCamera, cameraType, colorBuffer, depthPyramid);
|
||
|
|
else if (fullResolutionClouds)
|
||
|
|
transparentPrepass.clouds = RenderVolumetricClouds_FullResolution(renderGraph, hdCamera, cameraType, colorBuffer, depthPyramid);
|
||
|
|
else // realtime reflection
|
||
|
|
transparentPrepass.clouds = RenderVolumetricClouds_LowResolution(renderGraph, hdCamera, cameraType, colorBuffer, depthPyramid);
|
||
|
|
|
||
|
|
// Push the texture to the debug menu
|
||
|
|
if (m_RenderPipeline.m_CurrentDebugDisplaySettings.data.volumetricCloudDebug == VolumetricCloudsDebug.Lighting)
|
||
|
|
m_RenderPipeline.PushFullScreenDebugTexture(renderGraph, transparentPrepass.clouds.lightingBuffer, FullScreenDebugMode.VolumetricClouds);
|
||
|
|
else
|
||
|
|
m_RenderPipeline.PushFullScreenDebugTexture(renderGraph, transparentPrepass.clouds.depthBuffer, FullScreenDebugMode.VolumetricClouds, GraphicsFormat.R32_SFloat);
|
||
|
|
}
|
||
|
|
|
||
|
|
internal void PreRenderVolumetricClouds(RenderGraph renderGraph, HDCamera hdCamera)
|
||
|
|
{
|
||
|
|
if (m_RenderPipeline.m_CurrentDebugDisplaySettings.DebugHideSky(hdCamera))
|
||
|
|
return;
|
||
|
|
|
||
|
|
// Grab the volume settings
|
||
|
|
VolumetricClouds settings = hdCamera.volumeStack.GetComponent<VolumetricClouds>();
|
||
|
|
|
||
|
|
// If the clouds are enabled on this camera
|
||
|
|
if (!HasVolumetricClouds(hdCamera, in settings))
|
||
|
|
return;
|
||
|
|
|
||
|
|
// Evaluate the cloud map
|
||
|
|
PreRenderVolumetricCloudMap(renderGraph, hdCamera, in settings);
|
||
|
|
|
||
|
|
// Render the cloud shadows
|
||
|
|
RenderVolumetricCloudsShadows(renderGraph, hdCamera, in settings);
|
||
|
|
}
|
||
|
|
|
||
|
|
GraphicsFormat GetCloudsColorFormat(VolumetricClouds settings, bool isHistoryBuffer)
|
||
|
|
{
|
||
|
|
// When neighborhood clamping is disabled, using R11G11B10 format for reprojection causes color shift
|
||
|
|
if (!settings.ghostingReduction.value && isHistoryBuffer) return GraphicsFormat.R16G16B16A16_SFloat;
|
||
|
|
return (GraphicsFormat)m_RenderPipeline.asset.currentPlatformRenderPipelineSettings.colorBufferFormat;
|
||
|
|
}
|
||
|
|
|
||
|
|
void CreateTracingTextures(RenderGraph renderGraph, RenderGraphBuilder builder, VolumetricClouds settings, float scale, out TextureHandle cloudsLighting, out TextureHandle cloudsDepth)
|
||
|
|
{
|
||
|
|
cloudsLighting = builder.CreateTransientTexture(new TextureDesc(Vector2.one * scale, true, true)
|
||
|
|
{ colorFormat = GetCloudsColorFormat(settings, false), enableRandomWrite = true, name = "Traced Clouds Lighting" });
|
||
|
|
|
||
|
|
cloudsDepth = builder.CreateTransientTexture(new TextureDesc(Vector2.one * scale, true, true)
|
||
|
|
{ colorFormat = GraphicsFormat.R16G16_SFloat, enableRandomWrite = true, name = "Traced Clouds Depth" });
|
||
|
|
}
|
||
|
|
|
||
|
|
void CreateIntermediateTextures(RenderGraph renderGraph, RenderGraphBuilder builder, VolumetricClouds settings, out TextureHandle intermediate1, out TextureHandle intermediate2)
|
||
|
|
{
|
||
|
|
intermediate1 = builder.CreateTransientTexture(new TextureDesc(Vector2.one * 0.5f, true, true)
|
||
|
|
{ colorFormat = GetCloudsColorFormat(settings, false), enableRandomWrite = true, name = "Temporary Clouds Lighting Buffer 1" });
|
||
|
|
|
||
|
|
intermediate2 = builder.CreateTransientTexture(new TextureDesc(Vector2.one * 0.5f, true, true)
|
||
|
|
{ colorFormat = GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite = true, name = "Temporary Clouds Lighting Buffer 2" });
|
||
|
|
}
|
||
|
|
|
||
|
|
void CreateOutputTextures(RenderGraph renderGraph, RenderGraphBuilder builder, VolumetricClouds settings, out TextureHandle cloudsLighting, out TextureHandle cloudsDepth)
|
||
|
|
{
|
||
|
|
cloudsLighting = builder.WriteTexture(renderGraph.CreateTexture(new TextureDesc(Vector2.one, true, true)
|
||
|
|
{ colorFormat = GetCloudsColorFormat(settings, false), enableRandomWrite = true, name = "Volumetric Clouds Lighting Texture" }));
|
||
|
|
|
||
|
|
cloudsDepth = builder.WriteTexture(renderGraph.CreateTexture(new TextureDesc(Vector2.one, true, true)
|
||
|
|
{ colorFormat = GraphicsFormat.R16G16_SFloat, enableRandomWrite = true, name = "Volumetric Clouds Depth Texture" }));
|
||
|
|
}
|
||
|
|
|
||
|
|
static void DoVolumetricCloudsTrace(CommandBuffer cmd, int traceTX, int traceTY, int viewCount, in VolumetricCloudCommonData commonData,
|
||
|
|
GraphicsBuffer ambientProbe, RTHandle colorBuffer, RTHandle depthPyramid,
|
||
|
|
RTHandle cloudsLightingOutput, RTHandle cloudsDepthOutput)
|
||
|
|
{
|
||
|
|
using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.VolumetricCloudsTrace)))
|
||
|
|
{
|
||
|
|
CoreUtils.SetKeyword(cmd, "PERCEPTUAL_TRANSMITTANCE", commonData.perceptualBlending);
|
||
|
|
CoreUtils.SetKeyword(cmd, "CLOUDS_SIMPLE_PRESET", commonData.simplePreset);
|
||
|
|
CoreUtils.SetKeyword(cmd, "CLOUDS_MICRO_EROSION", commonData.microErosion);
|
||
|
|
CoreUtils.SetKeyword(cmd, "PHYSICALLY_BASED_SUN", commonData.pbrSkyActive);
|
||
|
|
CoreUtils.SetKeyword(cmd, "TRACE_FOR_SKY", commonData.traceForSky);
|
||
|
|
|
||
|
|
cmd.SetComputeBufferParam(commonData.volumetricCloudsTraceCS, commonData.renderKernel, HDShaderIDs._VolumetricCloudsAmbientProbeBuffer, ambientProbe);
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsTraceCS, commonData.renderKernel, HDShaderIDs._CameraColorTexture, colorBuffer);
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsTraceCS, commonData.renderKernel, HDShaderIDs._CameraDepthTexture, depthPyramid);
|
||
|
|
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsTraceCS, commonData.renderKernel, HDShaderIDs._Worley128RGBA, commonData.worley128RGBA);
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsTraceCS, commonData.renderKernel, HDShaderIDs._ErosionNoise, commonData.erosionNoise);
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsTraceCS, commonData.renderKernel, HDShaderIDs._CloudMapTexture, commonData.cloudMapTexture);
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsTraceCS, commonData.renderKernel, HDShaderIDs._CloudLutTexture, commonData.cloudLutTexture);
|
||
|
|
|
||
|
|
// Output buffers
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsTraceCS, commonData.renderKernel, HDShaderIDs._CloudsLightingTextureRW, cloudsLightingOutput);
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsTraceCS, commonData.renderKernel, HDShaderIDs._CloudsDepthTextureRW, cloudsDepthOutput);
|
||
|
|
|
||
|
|
cmd.DispatchCompute(commonData.volumetricCloudsTraceCS, commonData.renderKernel, traceTX, traceTY, viewCount);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void DoVolumetricCloudsReproject(CommandBuffer cmd, int kernel, int traceTX, int traceTY, int viewCount, in VolumetricCloudCommonData commonData,
|
||
|
|
RTHandle tracedCloudsLighting, RTHandle tracedCloudsDepth, RTHandle depthPyramid,
|
||
|
|
bool withHistory, bool clearHistory, RTHandle previousHistory0Buffer, RTHandle previousHistory1Buffer,
|
||
|
|
RTHandle lightingOutput, RTHandle additionalOutput)
|
||
|
|
{
|
||
|
|
var marker = withHistory ? HDProfileId.VolumetricCloudsReproject : HDProfileId.VolumetricCloudsPreUpscale;
|
||
|
|
|
||
|
|
using (new ProfilingScope(cmd, ProfilingSampler.Get(marker)))
|
||
|
|
{
|
||
|
|
if (withHistory)
|
||
|
|
{
|
||
|
|
if (clearHistory)
|
||
|
|
{
|
||
|
|
CoreUtils.SetRenderTarget(cmd, previousHistory0Buffer, clearFlag: ClearFlag.Color, clearColor: Color.black);
|
||
|
|
CoreUtils.SetRenderTarget(cmd, previousHistory1Buffer, clearFlag: ClearFlag.Color, clearColor: Color.black);
|
||
|
|
}
|
||
|
|
|
||
|
|
// History buffers
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsCS, kernel, HDShaderIDs._HistoryVolumetricClouds0Texture, previousHistory0Buffer);
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsCS, kernel, HDShaderIDs._HistoryVolumetricClouds1Texture, previousHistory1Buffer);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Input textures
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsCS, kernel, HDShaderIDs._CameraDepthTexture, depthPyramid);
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsCS, kernel, HDShaderIDs._CloudsLightingTexture, tracedCloudsLighting);
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsCS, kernel, HDShaderIDs._CloudsDepthTexture, tracedCloudsDepth);
|
||
|
|
|
||
|
|
// Output textures
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsCS, kernel, HDShaderIDs._CloudsLightingTextureRW, lightingOutput);
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsCS, kernel, HDShaderIDs._CloudsAdditionalTextureRW, additionalOutput);
|
||
|
|
|
||
|
|
// Re-project from the previous frame
|
||
|
|
cmd.DispatchCompute(commonData.volumetricCloudsCS, kernel, traceTX, traceTY, viewCount);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void DoVolumetricCloudsUpscale(CommandBuffer cmd, int kernel, int traceTX, int traceTY, int viewCount, in VolumetricCloudCommonData commonData,
|
||
|
|
RTHandle currentHistory0Buffer, RTHandle currentHistory1Buffer, RTHandle colorBuffer, RTHandle depthPyramid,
|
||
|
|
RTHandle cloudsLighting, RTHandle cloudsDepth)
|
||
|
|
{
|
||
|
|
using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.VolumetricCloudsUpscale)))
|
||
|
|
{
|
||
|
|
// Compute the final resolution parameters
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsCS, kernel, HDShaderIDs._VolumetricCloudsTexture, currentHistory0Buffer);
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsCS, kernel, HDShaderIDs._DepthStatusTexture, currentHistory1Buffer);
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsCS, kernel, HDShaderIDs._CameraColorTexture, colorBuffer);
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsCS, kernel, HDShaderIDs._CameraDepthTexture, depthPyramid);
|
||
|
|
|
||
|
|
// Output clouds texture (scattering + transmittance)
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsCS, kernel, HDShaderIDs._VolumetricCloudsLightingTextureRW, cloudsLighting);
|
||
|
|
cmd.SetComputeTextureParam(commonData.volumetricCloudsCS, kernel, HDShaderIDs._VolumetricCloudsDepthTextureRW, cloudsDepth);
|
||
|
|
cmd.DispatchCompute(commonData.volumetricCloudsCS, kernel, traceTX, traceTY, viewCount);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static float GetCloudNearPlane(float3 originPS, float lowerBoundPS, float higherBoundPS)
|
||
|
|
{
|
||
|
|
float radialDistance = math.length(originPS);
|
||
|
|
float rcpRadialDistance = math.rcp(radialDistance);
|
||
|
|
float cosChi = 1.0f;
|
||
|
|
Vector2 tInner = PhysicallyBasedSky.IntersectSphere(lowerBoundPS, cosChi, radialDistance, rcpRadialDistance);
|
||
|
|
Vector2 tOuter = PhysicallyBasedSky.IntersectSphere(higherBoundPS, -cosChi, radialDistance, rcpRadialDistance);
|
||
|
|
|
||
|
|
if (tInner.x < 0.0 && tInner.y >= 0.0) // Below the lower bound
|
||
|
|
return tInner.y;
|
||
|
|
else // Inside or above the cloud volume
|
||
|
|
return math.max(tOuter.x, 0.0f);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
[Serializable]
|
||
|
|
[SupportedOnRenderPipeline(typeof(HDRenderPipelineAsset))]
|
||
|
|
[Categorization.CategoryInfo(Name = "R: Volumetric Clouds", Order = 1000), HideInInspector]
|
||
|
|
class VolumetricCloudsRuntimeResources : IRenderPipelineResources
|
||
|
|
{
|
||
|
|
public int version => 0;
|
||
|
|
|
||
|
|
#region Shaders
|
||
|
|
[Header("Shaders")]
|
||
|
|
[SerializeField, ResourcePath("Runtime/Lighting/VolumetricClouds/VolumetricClouds.compute")]
|
||
|
|
private ComputeShader m_VolumetricCloudsCS;
|
||
|
|
|
||
|
|
public ComputeShader volumetricCloudsCS
|
||
|
|
{
|
||
|
|
get => m_VolumetricCloudsCS;
|
||
|
|
set => this.SetValueAndNotify(ref m_VolumetricCloudsCS, value);
|
||
|
|
}
|
||
|
|
|
||
|
|
[SerializeField, ResourcePath("Runtime/Lighting/VolumetricClouds/VolumetricCloudsTrace.compute")]
|
||
|
|
private ComputeShader m_VolumetricCloudsTraceCS;
|
||
|
|
|
||
|
|
public ComputeShader volumetricCloudsTraceCS
|
||
|
|
{
|
||
|
|
get => m_VolumetricCloudsTraceCS;
|
||
|
|
set => this.SetValueAndNotify(ref m_VolumetricCloudsTraceCS, value);
|
||
|
|
}
|
||
|
|
|
||
|
|
[SerializeField, ResourcePath("Runtime/Lighting/VolumetricClouds/VolumetricCloudsTraceShadows.compute")]
|
||
|
|
private ComputeShader m_VolumetricCloudsTraceShadowsCS;
|
||
|
|
|
||
|
|
public ComputeShader volumetricCloudsTraceShadowsCS
|
||
|
|
{
|
||
|
|
get => m_VolumetricCloudsTraceShadowsCS;
|
||
|
|
set => this.SetValueAndNotify(ref m_VolumetricCloudsTraceShadowsCS, value);
|
||
|
|
}
|
||
|
|
|
||
|
|
[SerializeField, ResourcePath("Runtime/Lighting/VolumetricClouds/VolumetricCloudsShadowFilter.compute")]
|
||
|
|
private ComputeShader m_VolumetricCloudsShadowFilterCS;
|
||
|
|
|
||
|
|
public ComputeShader volumetricCloudsShadowFilterCS
|
||
|
|
{
|
||
|
|
get => m_VolumetricCloudsShadowFilterCS;
|
||
|
|
set => this.SetValueAndNotify(ref m_VolumetricCloudsShadowFilterCS, value);
|
||
|
|
}
|
||
|
|
|
||
|
|
[SerializeField, ResourcePath("Editor/Lighting/VolumetricClouds/CloudMapGenerator.compute")]
|
||
|
|
private ComputeShader m_VolumetricCloudMapGeneratorCS;
|
||
|
|
|
||
|
|
public ComputeShader volumetricCloudMapGeneratorCS
|
||
|
|
{
|
||
|
|
get => m_VolumetricCloudMapGeneratorCS;
|
||
|
|
set => this.SetValueAndNotify(ref m_VolumetricCloudMapGeneratorCS, value);
|
||
|
|
}
|
||
|
|
|
||
|
|
[SerializeField, ResourcePath("Runtime/Lighting/VolumetricClouds/VolumetricCloudsCombine.shader")]
|
||
|
|
private Shader m_VolumetricCloudsCombinePS;
|
||
|
|
|
||
|
|
public Shader volumetricCloudsCombinePS
|
||
|
|
{
|
||
|
|
get => m_VolumetricCloudsCombinePS;
|
||
|
|
set => this.SetValueAndNotify(ref m_VolumetricCloudsCombinePS, value);
|
||
|
|
}
|
||
|
|
#endregion
|
||
|
|
|
||
|
|
#region Textures
|
||
|
|
[Header("Textures")]
|
||
|
|
[SerializeField][ResourcePath("Runtime/RenderPipelineResources/Texture/VolumetricClouds/CloudLutRainAO.png")]
|
||
|
|
private Texture2D m_CloudLutRainAO;
|
||
|
|
public Texture2D cloudLutRainAO
|
||
|
|
{
|
||
|
|
get => m_CloudLutRainAO;
|
||
|
|
set => this.SetValueAndNotify(ref m_CloudLutRainAO, value);
|
||
|
|
}
|
||
|
|
|
||
|
|
[SerializeField][ResourcePath("Runtime/RenderPipelineResources/Texture/VolumetricClouds/WorleyNoise128RGBA.png")]
|
||
|
|
private Texture3D m_WorleyNoise128RGBA;
|
||
|
|
public Texture3D worleyNoise128RGBA
|
||
|
|
{
|
||
|
|
get => m_WorleyNoise128RGBA;
|
||
|
|
set => this.SetValueAndNotify(ref m_WorleyNoise128RGBA, value);
|
||
|
|
}
|
||
|
|
|
||
|
|
[SerializeField][ResourcePath("Runtime/RenderPipelineResources/Texture/VolumetricClouds/WorleyNoise32RGB.png")]
|
||
|
|
private Texture3D m_WorleyNoise32RGB;
|
||
|
|
public Texture3D worleyNoise32RGB
|
||
|
|
{
|
||
|
|
get => m_WorleyNoise32RGB;
|
||
|
|
set => this.SetValueAndNotify(ref m_WorleyNoise32RGB, value);
|
||
|
|
}
|
||
|
|
|
||
|
|
[SerializeField][ResourcePath("Runtime/RenderPipelineResources/Texture/VolumetricClouds/PerlinNoise32RGB.png")]
|
||
|
|
private Texture3D m_PerlinNoise32RGB;
|
||
|
|
public Texture3D perlinNoise32RGB
|
||
|
|
{
|
||
|
|
get => m_PerlinNoise32RGB;
|
||
|
|
set => this.SetValueAndNotify(ref m_PerlinNoise32RGB, value);
|
||
|
|
}
|
||
|
|
#endregion
|
||
|
|
}
|
||
|
|
}
|