移除水
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// Crest Water System
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// Copyright © 2024 Wave Harmonic. All rights reserved.
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using UnityEngine;
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using UnityEngine.Rendering;
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using UnityEngine.Experimental.Rendering;
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namespace WaveHarmonic.Crest
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{
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// Built-in Render Pipeline
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partial class WaterRenderer
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{
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partial class ShaderIDs
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{
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public static readonly int s_CameraOpaqueTexture = Shader.PropertyToID("_CameraOpaqueTexture");
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public static readonly int s_ShadowMapTexture = Shader.PropertyToID("_ShadowMapTexture");
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public static readonly int s_ScreenSpaceShadowTexture = Shader.PropertyToID("_Crest_ScreenSpaceShadowTexture");
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}
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CommandBuffer _CopyColorTextureBuffer;
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RenderTexture _CameraColorTexture;
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CommandBuffer _ScreenSpaceShadowMapBuffer;
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CommandBuffer _DeferredShadowMapBuffer;
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internal DefaultFormat LikelyFrameBufferFormat
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{
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get
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{
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if (_OverrideRenderHDR)
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{
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return _RenderHDR ? DefaultFormat.HDR : DefaultFormat.LDR;
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}
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#if UNITY_EDITOR
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var target = UnityEditor.EditorUserBuildSettings.activeBuildTarget;
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if (target is UnityEditor.BuildTarget.Android or UnityEditor.BuildTarget.iOS or UnityEditor.BuildTarget.tvOS)
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{
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return DefaultFormat.LDR;
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}
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#endif
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#if UNITY_ANDROID || UNITY_IOS || UNITY_TVOS
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return DefaultFormat.LDR;
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#else
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return DefaultFormat.HDR;
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#endif
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}
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}
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void OnPreRenderCamera(Camera camera)
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{
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#if UNITY_EDITOR
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UpdateLastActiveSceneCamera(camera);
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if (!Application.isPlaying)
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{
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OnPreRenderWaterLevelDepthTexture(camera);
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}
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#endif
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OnBeginCameraRendering(camera);
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if (!Helpers.MaskIncludesLayer(camera.cullingMask, Layer))
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{
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return;
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}
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XRHelpers.Update(camera);
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XRHelpers.SetInverseViewProjectionMatrix(camera);
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_CopyColorTextureBuffer ??= new() { name = "Crest Copy Color Texture" };
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_DeferredShadowMapBuffer ??= new() { name = "Crest Deferred Shadow Data" };
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_ScreenSpaceShadowMapBuffer ??= new() { name = "Crest Screen-Space Shadow Data" };
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_CopyColorTextureBuffer.Clear();
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_DeferredShadowMapBuffer.Clear();
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_ScreenSpaceShadowMapBuffer.Clear();
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// Create or update RT.
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{
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var descriptor = XRHelpers.GetRenderTextureDescriptor(camera);
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// Format must be correct for CopyTexture to work. Hopefully this is good enough.
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if (camera.allowHDR && QualitySettings.activeColorSpace == ColorSpace.Linear)
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{
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descriptor.graphicsFormat = SystemInfo.GetGraphicsFormat(LikelyFrameBufferFormat);
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}
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// Occurred in a build and caused a black screen.
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if (descriptor.width <= 0)
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{
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return;
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}
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if (_CameraColorTexture == null)
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{
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_CameraColorTexture = new(descriptor);
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}
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else
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{
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_CameraColorTexture.Release();
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_CameraColorTexture.descriptor = descriptor;
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}
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_CameraColorTexture.Create();
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}
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var target = new RenderTargetIdentifier(_CameraColorTexture, 0, CubemapFace.Unknown, -1);
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// Use blit instead of CopyTexture as it will smooth out issues with format
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// differences which is very hard to get right for BIRP.
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_CopyColorTextureBuffer.Blit(BuiltinRenderTextureType.CameraTarget, target);
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_CopyColorTextureBuffer.SetGlobalTexture(ShaderIDs.s_CameraOpaqueTexture, _CameraColorTexture);
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camera.AddCommandBuffer(CameraEvent.BeforeForwardAlpha, _CopyColorTextureBuffer);
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if (QualitySettings.shadows != ShadowQuality.Disable && PrimaryLight != null)
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{
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// Make the screen-space shadow texture available for the water shader for caustic occlusion.
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_ScreenSpaceShadowMapBuffer.SetGlobalTexture(ShaderIDs.s_ScreenSpaceShadowTexture, BuiltinRenderTextureType.CurrentActive);
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PrimaryLight.AddCommandBuffer(LightEvent.AfterScreenspaceMask, _ScreenSpaceShadowMapBuffer);
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// Call this regardless of rendering path as it has no negative consequences for forward.
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_DeferredShadowMapBuffer.SetGlobalTexture(ShaderIDs.s_ShadowMapTexture, BuiltinRenderTextureType.CurrentActive);
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PrimaryLight.AddCommandBuffer(LightEvent.AfterShadowMap, _DeferredShadowMapBuffer);
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}
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{
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// Always set these in case shadow maps are disabled in the graphics settings which
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// we cannot check at runtime.
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// Black for shadowed. White for unshadowed.
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if (camera.stereoEnabled && XRHelpers.IsSinglePass)
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{
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Shader.SetGlobalTexture(ShaderIDs.s_ScreenSpaceShadowTexture, XRHelpers.WhiteTexture);
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}
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else
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{
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Shader.SetGlobalTexture(ShaderIDs.s_ScreenSpaceShadowTexture, Texture2D.whiteTexture);
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}
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}
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}
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void OnPostRenderCamera(Camera camera)
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{
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#if UNITY_EDITOR
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if (!Application.isPlaying)
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{
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OnPostRenderWaterLevelDepthTexture(camera);
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}
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#endif
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if (!Helpers.MaskIncludesLayer(camera.cullingMask, Layer))
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{
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return;
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}
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if (_CopyColorTextureBuffer != null)
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{
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camera.RemoveCommandBuffer(CameraEvent.BeforeForwardAlpha, _CopyColorTextureBuffer);
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}
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if (QualitySettings.shadows != ShadowQuality.Disable && PrimaryLight != null)
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{
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if (_ScreenSpaceShadowMapBuffer != null)
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{
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PrimaryLight.RemoveCommandBuffer(LightEvent.AfterScreenspaceMask, _ScreenSpaceShadowMapBuffer);
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}
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if (_DeferredShadowMapBuffer != null)
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{
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PrimaryLight.RemoveCommandBuffer(LightEvent.AfterShadowMap, _DeferredShadowMapBuffer);
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}
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}
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}
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}
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}
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