331 lines
18 KiB
C#
331 lines
18 KiB
C#
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using System;
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using UnityEngine;
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using UnityEngine.Experimental.Rendering;
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using UnityEngine.Profiling;
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using UnityEngine.Rendering;
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using UnityEngine.Rendering.RendererUtils;
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using UnityEngine.Rendering.Universal;
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namespace X.Rendering.Feature
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{
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[DisallowMultipleRendererFeature("PlanarScreenShadow")]
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public class PlanarScreenShadow : ScriptableRendererFeature
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{
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public enum SoftQuality
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{
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None = 0,
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Low = 10,
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Medium = 16,
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High = 32,
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}
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public enum ShadowResolution
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{
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_256 = 256,
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_512 = 512,
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_768 = 768,
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_1024 = 1024,
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}
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[Serializable]
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private class Settings
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{
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public Material PlanarShadowMat;
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public Color planarShadowColor = Color.grey;
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public float castPlaneOffset = 0;
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public Vector3 castPlaneNormal = Vector3.up;
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public ShadowResolution shadowResolution = ShadowResolution._512;
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public SoftQuality softQuality = SoftQuality.Medium;
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public float softScaleByDistance = 1.0f;
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public float softGradientDistance = 15f;
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[Range(0.0f, 1.0f)]
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public float minSoft = 0.1f;
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}
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[SerializeField]
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private Settings settings = new();
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PlanarShadowRenderPass pnanarShaowPass;
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/// <inheritdoc/>
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public override void Create()
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{
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pnanarShaowPass = new PlanarShadowRenderPass(settings);
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pnanarShaowPass.renderPassEvent = RenderPassEvent.BeforeRenderingOpaques;
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}
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public override void AddRenderPasses(ScriptableRenderer renderer, ref RenderingData renderingData)
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{
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renderer.EnqueuePass(pnanarShaowPass);
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}
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class PlanarShadowRenderPass : ScriptableRenderPass
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{
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private RTHandle planarShadowRT;
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private RTHandle shadowDistanceTempTarget;
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private RTHandle shadowDistanceTarget;
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private RTHandle softShadowRenderTarget;
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private Settings settings;
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private ShaderTagId[] planarShadowShaderIds = new ShaderTagId[] { new ShaderTagId("PlanarShadow") , new ShaderTagId("UniversalForward") };
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private ProfilingSampler profiler;
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static GlobalKeyword planarShadowKeyword;
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static GlobalKeyword lowSoftQuality;
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static GlobalKeyword mediumSoftQuality;
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static GlobalKeyword highSoftQuality;
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static Vector4[] lowSoftOperator;
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static Vector4[] mediumSoftOperator;
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static Vector4[] highSoftOperator;
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static readonly int playerLayer = LayerMask.NameToLayer("Player");
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public PlanarShadowRenderPass(Settings settings)
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{
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this.settings = settings;
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InitOperators();
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planarShadowKeyword = GlobalKeyword.Create("PLANAR_SHADOW");
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lowSoftQuality = GlobalKeyword.Create("LOW_SOFT_QUALITY");
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mediumSoftQuality = GlobalKeyword.Create("MEDIUM_SOFT_QUALITY");
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highSoftQuality = GlobalKeyword.Create("HIGH_SOFT_QUALITY");
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profiler = new(nameof(PlanarShadowRenderPass));
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}
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private static void InitOperators()
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{
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lowSoftOperator = new Vector4[32]
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{
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new Vector4(-0.7449182f, -0.3948351f, 0.05994137f, 0f),
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new Vector4(0.04522014f, -0.7452399f, 0.08145966f, 0f),
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new Vector4(0.5859449f, -0.3042229f, 0.1038759f, 0f),
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new Vector4(0.2801918f, 0.1988664f, 0.1961446f, 0f),
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new Vector4(0.8921295f, 0.231646f, 0.04541548f, 0f),
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new Vector4(-0.2148036f, -0.2805325f, 0.1935014f, 0f),
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new Vector4(-0.3599106f, 0.2223929f, 0.1736383f, 0f),
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new Vector4(-0.8255251f, 0.4714117f, 0.04075267f, 0f),
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new Vector4(0.1672432f, 0.8953505f, 0.0472625f, 0f),
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new Vector4(-0.3843737f, 0.7612128f, 0.05800831f, 0f),
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Vector4.zero,Vector4.zero,Vector4.zero,Vector4.zero,Vector4.zero,
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Vector4.zero,Vector4.zero,Vector4.zero,Vector4.zero,Vector4.zero,
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Vector4.zero,Vector4.zero,Vector4.zero,Vector4.zero,Vector4.zero,
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Vector4.zero,Vector4.zero,Vector4.zero,Vector4.zero,Vector4.zero,
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Vector4.zero,Vector4.zero,};
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mediumSoftOperator = new Vector4[32]
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{
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new Vector4(-0.573014f, -0.3037193f, 0.07195906f, 0f),
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new Vector4(0.03478467f, -0.5732615f, 0.08628026f, 0f),
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new Vector4(-0.4175899f, -0.7260013f, 0.04103231f, 0f),
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new Vector4(-0.2290866f, -0.06732111f, 0.1488967f, 0f),
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new Vector4(0.2787023f, -0.9224322f, 0.02605386f, 0f),
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new Vector4(0.4750609f, 0.0006364584f, 0.1062624f, 0f),
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new Vector4(-0.8097122f, 0.1471269f, 0.04306531f, 0f),
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new Vector4(-0.6714117f, 0.6465726f, 0.0293584f, 0f),
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new Vector4(-0.0459074f, 0.6448682f, 0.07233827f, 0f),
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new Vector4(-0.413441f, 0.2941564f, 0.0997189f, 0f),
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new Vector4(0.596337f, -0.5908241f, 0.04076795f, 0f),
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new Vector4(0.8953905f, 0.02900922f, 0.03352015f, 0f),
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new Vector4(0.6646501f, 0.5270658f, 0.03957359f, 0f),
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new Vector4(0.2487512f, 0.3517451f, 0.1151315f, 0f),
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new Vector4(-0.9710876f, -0.2296215f, 0.0227782f, 0f),
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new Vector4(0.1961836f, 0.9729925f, 0.02326321f, 0f),
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Vector4.zero,Vector4.zero,Vector4.zero,Vector4.zero,Vector4.zero,
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Vector4.zero,Vector4.zero,Vector4.zero,Vector4.zero,Vector4.zero,
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Vector4.zero,Vector4.zero,Vector4.zero,Vector4.zero,Vector4.zero,
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Vector4.zero};
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highSoftOperator = new Vector4[32]
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{new Vector4(0.4153066f, -0.0570948f, 0.06091154f, 0f),
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new Vector4(0.1744031f, 0.1689546f, 0.07693625f, 0f),
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new Vector4(0.1248782f, -0.3793401f, 0.06292317f, 0f),
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new Vector4(0.377597f, -0.5691307f, 0.03405317f, 0f),
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new Vector4(-0.2083057f, -0.1873559f, 0.07398886f, 0f),
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new Vector4(0.5849795f, -0.7913114f, 0.0124803f, 0f),
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new Vector4(-0.5503789f, -0.6051685f, 0.02270556f, 0f),
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new Vector4(0.5012408f, 0.3336388f, 0.04192101f, 0f),
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new Vector4(0.02808845f, -0.6995828f, 0.03247567f, 0f),
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new Vector4(-0.263142f, -0.4866776f, 0.04693219f, 0f),
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new Vector4(0.2714973f, 0.5782288f, 0.03827445f, 0f),
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new Vector4(0.6123171f, 0.6595281f, 0.0171343f, 0f),
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new Vector4(-0.6475288f, -0.1612791f, 0.03552699f, 0f),
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new Vector4(0.4024244f, 0.8707167f, 0.01374556f, 0f),
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new Vector4(-0.1119028f, 0.6489825f, 0.03636114f, 0f),
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new Vector4(-0.02142411f, 0.9497761f, 0.01423686f, 0f),
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new Vector4(-0.2120009f, 0.3269744f, 0.06389162f, 0f),
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new Vector4(-0.5039293f, 0.1003278f, 0.05105383f, 0f),
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new Vector4(0.8276886f, 0.4618528f, 0.01435572f, 0f),
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new Vector4(0.8411248f, -0.5285234f, 0.0120281f, 0f),
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new Vector4(-0.3644551f, 0.790384f, 0.0190265f, 0f),
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new Vector4(0.306049f, -0.8608109f, 0.01630674f, 0f),
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new Vector4(-0.7063691f, 0.6909254f, 0.01228318f, 0f),
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new Vector4(0.9388323f, -0.01849926f, 0.01484117f, 0f),
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new Vector4(0.6864765f, 0.1109735f, 0.03290983f, 0f),
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new Vector4(0.638592f, -0.3184139f, 0.03126587f, 0f),
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new Vector4(-0.07949254f, -0.9821419f, 0.01241689f, 0f),
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new Vector4(-0.4160894f, -0.9045444f, 0.01192026f, 0f),
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new Vector4(-0.7837164f, 0.1824391f, 0.02371033f, 0f),
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new Vector4(-0.8274034f, -0.4524156f, 0.01461939f, 0f),
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new Vector4(-0.9582478f, -0.1421478f, 0.01325019f, 0f),
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new Vector4(-0.4291434f, 0.5112085f, 0.03551322f, 0f),
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};
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}
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public override void OnCameraSetup(CommandBuffer cmd, ref RenderingData renderingData)
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{
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Profiler.BeginSample("Planar Screen Shadow Setup");
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RecreateRenderTexture(renderingData);
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Profiler.EndSample();
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}
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private void RecreateRenderTexture(RenderingData renderingData)
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{
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Vector2Int sourceRTSize = new Vector2Int(renderingData.cameraData.scaledWidth, renderingData.cameraData.scaledHeight);
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int shadowResolution = (int)settings.shadowResolution;
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int resolutionWidth = shadowResolution;
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int resolutionHeight = shadowResolution;
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if (sourceRTSize.x > sourceRTSize.y)
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resolutionWidth = Mathf.RoundToInt(shadowResolution * ((float)sourceRTSize.x / (float)sourceRTSize.y));
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else
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resolutionHeight = Mathf.RoundToInt(shadowResolution * ((float)sourceRTSize.y / (float)sourceRTSize.x));
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if (resolutionWidth == 0 || resolutionHeight == 0)
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return;
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var shadowMapDesc = new RenderTextureDescriptor();
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shadowMapDesc.width = resolutionWidth;
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shadowMapDesc.height = resolutionHeight;
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shadowMapDesc.depthBufferBits = 0;
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shadowMapDesc.msaaSamples = 1;
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shadowMapDesc.useMipMap = false;
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shadowMapDesc.autoGenerateMips = false;
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shadowMapDesc.dimension = TextureDimension.Tex2D;
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shadowMapDesc.graphicsFormat = RenderingUtils.SupportsGraphicsFormat(GraphicsFormat.R8G8_UNorm, FormatUsage.Linear | FormatUsage.Render)
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? GraphicsFormat.R8G8_UNorm
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: GraphicsFormat.B8G8R8A8_UNorm;
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SoftQuality softQuality = settings.softQuality;
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FilterMode filterMode = softQuality == SoftQuality.None ? FilterMode.Bilinear : FilterMode.Point;
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RenderingUtils.ReAllocateIfNeeded(ref planarShadowRT, shadowMapDesc, filterMode, TextureWrapMode.Clamp, name: "_PlanarShadowMap");
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int disMapSize = 64;
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int disMapHeight = disMapSize;
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int disMapWidth = disMapSize;
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if (sourceRTSize.x > sourceRTSize.y)
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disMapWidth = Mathf.RoundToInt(disMapSize * ((float)sourceRTSize.x / (float)sourceRTSize.y));
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else
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disMapHeight = Mathf.RoundToInt(disMapSize * ((float)sourceRTSize.y / (float)sourceRTSize.x));
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var distanceMapDesc = shadowMapDesc;
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distanceMapDesc.graphicsFormat = RenderingUtils.SupportsGraphicsFormat(GraphicsFormat.R8_UNorm, FormatUsage.Linear | FormatUsage.Render)
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? GraphicsFormat.R8_UNorm
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: GraphicsFormat.B8G8R8A8_UNorm;
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distanceMapDesc.width = disMapWidth;
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distanceMapDesc.height = disMapHeight;
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RenderingUtils.ReAllocateIfNeeded(ref shadowDistanceTempTarget, distanceMapDesc, FilterMode.Point, TextureWrapMode.Clamp);
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RenderingUtils.ReAllocateIfNeeded(ref shadowDistanceTarget, distanceMapDesc, FilterMode.Bilinear, TextureWrapMode.Clamp);
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var softMapDesc = shadowMapDesc;
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softMapDesc.graphicsFormat = RenderingUtils.SupportsGraphicsFormat(GraphicsFormat.R8_UNorm, FormatUsage.Linear | FormatUsage.Render)
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? GraphicsFormat.R8_UNorm
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: GraphicsFormat.B8G8R8A8_UNorm;
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RenderingUtils.ReAllocateIfNeeded(ref softShadowRenderTarget, softMapDesc,
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FilterMode.Bilinear, TextureWrapMode.Clamp, name: "_SoftPlanarShadowMap");
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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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var cameraData = renderingData.cameraData;
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var cmd = renderingData.commandBuffer;
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using var scp = new ProfilingScope(cmd, profiler);
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float castPlaneOffset = settings.castPlaneOffset;
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Vector3 castPlaneNormal = settings.castPlaneNormal;
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ShadowResolution shadowResolution = settings.shadowResolution;
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SoftQuality softQuality = settings.softQuality;
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float softScaleByDistance = settings.softScaleByDistance;
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float softGradientDistance = settings.softGradientDistance;
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float minSoft = settings.minSoft;
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var rendererListDesc = new RendererListDesc(planarShadowShaderIds, renderingData.cullResults, cameraData.camera)
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{
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renderQueueRange = RenderQueueRange.all,
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sortingCriteria = SortingCriteria.OptimizeStateChanges,
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rendererConfiguration = renderingData.perObjectData,
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overrideMaterial = settings.PlanarShadowMat,
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overrideMaterialPassIndex = 3,
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layerMask = 1 << playerLayer,
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};
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RendererList rendererList = context.CreateRendererList(rendererListDesc);
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Vector3 planeNormal = castPlaneNormal.normalized;
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Vector4 shadowCasterPlane = new Vector4(planeNormal.x, planeNormal.y, planeNormal.z, castPlaneOffset);
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cmd.BeginSample("PlanarShadow");
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cmd.SetGlobalVector("_PlanarShadowCastPlane", shadowCasterPlane);
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cmd.SetGlobalFloat("_MinSoft", Mathf.Clamp01(minSoft));
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cmd.SetGlobalFloat("_PlanarShadowMaxSoftDistance", softGradientDistance);
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cmd.SetViewProjectionMatrices(cameraData.camera.worldToCameraMatrix, cameraData.camera.projectionMatrix);
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cmd.SetRenderTarget(planarShadowRT, loadAction: RenderBufferLoadAction.DontCare, storeAction: RenderBufferStoreAction.Store);
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cmd.ClearRenderTarget(false, true, Color.clear);
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cmd.DrawRendererList(rendererList);
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cmd.EndSample("PlanarShadow");
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if (softQuality != SoftQuality.None)
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{
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cmd.BeginSample("BlurShadow");
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VisibleLight mainLight = renderingData.lightData.visibleLights[renderingData.lightData.mainLightIndex];
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Vector3 lightDirection = -mainLight.localToWorldMatrix.GetColumn(2);
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lightDirection.y = 0;
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Vector3 pixelOffset = cameraData.camera.WorldToScreenPoint(Vector3.zero) - cameraData.camera.WorldToScreenPoint(lightDirection);
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pixelOffset.z = 0;
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pixelOffset = pixelOffset.normalized;
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Vector4 shadowScreenVDir = new Vector4(pixelOffset.x, pixelOffset.y, 0, 0);
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Vector4 shadowScreenHDir = new Vector4(pixelOffset.x, -pixelOffset.y, 0, 0);
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int disMapWidth = shadowDistanceTempTarget.rt.width;
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int disMapHeight = shadowDistanceTempTarget.rt.height;
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cmd.SetGlobalVector("_ShadowScreenHDir", shadowScreenHDir);
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cmd.SetGlobalVector("_ShadowScreenVDir", shadowScreenVDir);
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cmd.SetGlobalVector("_EdgeMapTexelSize", new Vector4(1.0f / disMapWidth, 1.0f / disMapHeight, disMapWidth, disMapHeight));
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cmd.SetGlobalTexture("_SourceTex", planarShadowRT);
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cmd.SetRenderTarget(shadowDistanceTempTarget, loadAction: RenderBufferLoadAction.DontCare, storeAction: RenderBufferStoreAction.Store);
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cmd.DrawProcedural(Matrix4x4.identity, settings.PlanarShadowMat, 1, MeshTopology.Triangles, 3);
|
||
|
|
cmd.SetGlobalTexture("_SourceTex", shadowDistanceTempTarget);
|
||
|
|
cmd.SetRenderTarget(shadowDistanceTarget, loadAction: RenderBufferLoadAction.DontCare, storeAction: RenderBufferStoreAction.Store);
|
||
|
|
cmd.DrawProcedural(Matrix4x4.identity, settings.PlanarShadowMat, 0, MeshTopology.Triangles, 3);
|
||
|
|
|
||
|
|
Vector4[] possionOperator = lowSoftOperator;
|
||
|
|
if (softQuality == SoftQuality.Medium)
|
||
|
|
possionOperator = mediumSoftOperator;
|
||
|
|
if (softQuality == SoftQuality.High)
|
||
|
|
possionOperator = highSoftOperator;
|
||
|
|
|
||
|
|
cmd.DisableKeyword(lowSoftQuality);
|
||
|
|
cmd.DisableKeyword(mediumSoftQuality);
|
||
|
|
cmd.DisableKeyword(highSoftQuality);
|
||
|
|
if (softQuality == SoftQuality.Low)
|
||
|
|
cmd.EnableKeyword(lowSoftQuality);
|
||
|
|
if (softQuality == SoftQuality.Medium)
|
||
|
|
cmd.EnableKeyword(mediumSoftQuality);
|
||
|
|
if (softQuality == SoftQuality.High)
|
||
|
|
cmd.EnableKeyword(highSoftQuality);
|
||
|
|
cmd.SetGlobalFloat("_SoftScaleByDistance", softScaleByDistance * (float)shadowResolution / 256f);
|
||
|
|
cmd.SetGlobalTexture("_DistanceTex", shadowDistanceTarget);
|
||
|
|
cmd.SetGlobalVectorArray(Shader.PropertyToID("_PossionOperator"), possionOperator);
|
||
|
|
cmd.SetGlobalTexture("_SourceTex", planarShadowRT);
|
||
|
|
cmd.SetRenderTarget(softShadowRenderTarget, loadAction: RenderBufferLoadAction.DontCare, storeAction: RenderBufferStoreAction.Store);
|
||
|
|
cmd.DrawProcedural(Matrix4x4.identity, settings.PlanarShadowMat, 2, MeshTopology.Triangles, 3);
|
||
|
|
cmd.EndSample("BlurShadow");
|
||
|
|
}
|
||
|
|
|
||
|
|
cmd.EnableKeyword(planarShadowKeyword);
|
||
|
|
cmd.SetGlobalColor("_PlanarShadowColor", settings.planarShadowColor);
|
||
|
|
cmd.SetGlobalTexture("_PlanarShadowMap", softQuality == SoftQuality.None ? planarShadowRT : softShadowRenderTarget);
|
||
|
|
}
|
||
|
|
|
||
|
|
public override void OnFinishCameraStackRendering(CommandBuffer cmd)
|
||
|
|
{
|
||
|
|
cmd.DisableKeyword(planarShadowKeyword);
|
||
|
|
base.OnFinishCameraStackRendering(cmd);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|