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[Serializable] |
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public class ShadowSettings |
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{ |
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public bool enabled; |
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public bool screenSpace; |
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public int shadowAtlasWidth; |
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public int shadowAtlasHeight; |
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public bool enabled; |
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public bool screenSpace; |
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public int shadowAtlasWidth; |
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public int shadowAtlasHeight; |
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public float maxShadowDistance; |
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public int directionalLightCascadeCount; |
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public Vector3 directionalLightCascades; |
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public float directionalLightNearPlaneOffset; |
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public float maxShadowDistance; |
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public int directionalLightCascadeCount; |
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public Vector3 directionalLightCascades; |
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public float directionalLightNearPlaneOffset; |
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public RenderTextureFormat shadowmapTextureFormat; |
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public RenderTextureFormat screenspaceShadowmapTextureFormat; |
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public struct ShadowSliceData |
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{ |
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public Matrix4x4 shadowTransform; |
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public int atlasX; |
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public int atlasY; |
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public int shadowResolution; |
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public Matrix4x4 shadowTransform; |
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public int atlasX; |
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public int atlasY; |
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public int shadowResolution; |
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} |
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public struct LightData |
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public int mainLightIndex; |
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public LightShadows shadowMapSampleType; |
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} |
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public enum MixedLightingSetup |
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// Lights are culled per-object. This holds the maximum amount of lights that can be shaded per-object.
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// The engine fills in the lights indices per-object in unity4_LightIndices0 and unity_4LightIndices1
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private static readonly int kMaxPerObjectLights = 8; |
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private static readonly int kMaxPerObjectLights = 4; |
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private static readonly int kMaxVertexLights = 4; |
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private const int kMaxCascades = 4; |
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private int m_ShadowCasterCascadesCount; |
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private int m_ShadowMapRTID; |
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private int m_DirectionalShadowmapRTID; |
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private int m_AdditionalShadowmapRTID; |
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private Matrix4x4[] m_LocalLightShadowMatrices = new Matrix4x4[4]; |
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private RenderTexture m_ShadowMapRT; |
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private RenderTexture m_DirectionalShadowmapRT; |
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private RenderTexture m_AdditionalShadowmapRT; |
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private RenderTargetIdentifier m_ScreenSpaceShadowMapRT; |
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private RenderTargetIdentifier m_ColorRT; |
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private RenderTargetIdentifier m_CopyColorRT; |
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private Vector4 m_DirectionalShadowSplitRadii; |
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private ShadowSettings m_ShadowSettings = ShadowSettings.Default; |
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private ShadowSliceData[] m_ShadowSlices = new ShadowSliceData[kMaxCascades]; |
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private ShadowSliceData[] m_ShadowCascadeSlices = new ShadowSliceData[kMaxCascades]; |
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private ShadowSliceData[] m_AddtionalShadowSlices = new ShadowSliceData[kMaxPerObjectLights]; |
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private LightShadows m_ShadowSampling; |
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private LightShadows m_LocalLightShadowSampling; |
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private int m_LocalLightShadowResolution = 512; |
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private int m_LocalLightShadowIndex; |
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// Pipeline pass names
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private static readonly ShaderPassName m_DepthPrepass = new ShaderPassName("DepthOnly"); |
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// Lights are culled per-camera. Therefore we need to reset light buffers on each camera render
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PerCameraBuffer._MainLightPosition = Shader.PropertyToID("_MainLightPosition"); |
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PerCameraBuffer._MainLightColor = Shader.PropertyToID("_MainLightColor"); |
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PerCameraBuffer._MainLightDistanceAttenuation = Shader.PropertyToID("_MainLightDistanceAttenuation"); |
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PerCameraBuffer._MainLightSpotDir = Shader.PropertyToID("_MainLightSpotDir"); |
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PerCameraBuffer._MainLightSpotAttenuation = Shader.PropertyToID("_MainLightSpotAttenuation"); |
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PerCameraBuffer._MainLightCookie = Shader.PropertyToID("_MainLightCookie"); |
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PerCameraBuffer._WorldToLight = Shader.PropertyToID("_WorldToLight"); |
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PerCameraBuffer._AdditionalLightCount = Shader.PropertyToID("_AdditionalLightCount"); |
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PerCameraBuffer._AdditionalLightSpotDir = Shader.PropertyToID("_AdditionalLightSpotDir"); |
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PerCameraBuffer._AdditionalLightSpotAttenuation = Shader.PropertyToID("_AdditionalLightSpotAttenuation"); |
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ShadowConstantBuffer._WorldToShadow = Shader.PropertyToID("_WorldToShadow"); |
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ShadowConstantBuffer._ShadowData = Shader.PropertyToID("_ShadowData"); |
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ShadowConstantBuffer._DirShadowSplitSpheres = Shader.PropertyToID("_DirShadowSplitSpheres"); |
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ShadowConstantBuffer._DirShadowSplitSphereRadii = Shader.PropertyToID("_DirShadowSplitSphereRadii"); |
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ShadowConstantBuffer._ShadowOffset0 = Shader.PropertyToID("_ShadowOffset0"); |
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ShadowConstantBuffer._ShadowOffset1 = Shader.PropertyToID("_ShadowOffset1"); |
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ShadowConstantBuffer._ShadowOffset2 = Shader.PropertyToID("_ShadowOffset2"); |
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ShadowConstantBuffer._ShadowOffset3 = Shader.PropertyToID("_ShadowOffset3"); |
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ShadowConstantBuffer._ShadowmapSize = Shader.PropertyToID("_ShadowmapSize"); |
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DirectionalShadowConstantBuffer._WorldToShadow = Shader.PropertyToID("_WorldToShadow"); |
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DirectionalShadowConstantBuffer._ShadowData = Shader.PropertyToID("_ShadowData"); |
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DirectionalShadowConstantBuffer._DirShadowSplitSpheres = Shader.PropertyToID("_DirShadowSplitSpheres"); |
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DirectionalShadowConstantBuffer._DirShadowSplitSphereRadii = Shader.PropertyToID("_DirShadowSplitSphereRadii"); |
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DirectionalShadowConstantBuffer._ShadowOffset0 = Shader.PropertyToID("_ShadowOffset0"); |
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DirectionalShadowConstantBuffer._ShadowOffset1 = Shader.PropertyToID("_ShadowOffset1"); |
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DirectionalShadowConstantBuffer._ShadowOffset2 = Shader.PropertyToID("_ShadowOffset2"); |
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DirectionalShadowConstantBuffer._ShadowOffset3 = Shader.PropertyToID("_ShadowOffset3"); |
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DirectionalShadowConstantBuffer._ShadowmapSize = Shader.PropertyToID("_ShadowmapSize"); |
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LocalShadowConstantBuffer._LocalWorldToShadow = Shader.PropertyToID("_LocalWorldToShadowAtlas"); |
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LocalShadowConstantBuffer._LocalShadowData = Shader.PropertyToID("_LocalShadowData"); |
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LocalShadowConstantBuffer._LocalShadowOffset0 = Shader.PropertyToID("_LocalShadowOffset0"); |
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LocalShadowConstantBuffer._LocalShadowOffset1 = Shader.PropertyToID("_LocalShadowOffset1"); |
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LocalShadowConstantBuffer._LocalShadowOffset2 = Shader.PropertyToID("_LocalShadowOffset2"); |
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LocalShadowConstantBuffer._LocalShadowOffset3 = Shader.PropertyToID("_LocalShadowOffset3"); |
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LocalShadowConstantBuffer._LocalShadowmapSize = Shader.PropertyToID("_LocalShadowmapSize"); |
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m_ShadowMapRTID = Shader.PropertyToID("_ShadowMap"); |
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m_DirectionalShadowmapRTID = Shader.PropertyToID("_ShadowMap"); |
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m_AdditionalShadowmapRTID = Shader.PropertyToID("_LocalShadowMapAtlas"); |
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m_ScreenSpaceShadowMapRTID = Shader.PropertyToID("_ScreenSpaceShadowMap"); |
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CameraRenderTargetID.color = Shader.PropertyToID("_CameraColorRT"); |
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LightData lightData; |
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InitializeLightData(visibleLights, out lightData); |
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bool shadows = ShadowPass(visibleLights, ref context, ref lightData); |
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bool screenspaceShadows = ShadowPass(visibleLights, ref context, ref lightData); |
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SetupFrameRenderingConfiguration(out frameRenderingConfiguration, shadows, stereoEnabled, sceneViewCamera); |
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SetupFrameRenderingConfiguration(out frameRenderingConfiguration, screenspaceShadows, stereoEnabled, sceneViewCamera); |
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SetupIntermediateResources(frameRenderingConfiguration, ref context); |
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// SetupCameraProperties does the following:
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if (LightweightUtils.HasFlag(frameRenderingConfiguration, FrameRenderingConfiguration.DepthPrePass)) |
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DepthPass(ref context, frameRenderingConfiguration); |
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if (shadows && m_ShadowSettings.screenSpace) |
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if (screenspaceShadows) |
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ShadowCollectPass(visibleLights, ref context, ref lightData, frameRenderingConfiguration); |
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ForwardPass(visibleLights, frameRenderingConfiguration, ref context, ref lightData, stereoEnabled); |
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if (sceneViewCamera) |
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CopyTexture(cmd, CameraRenderTargetID.depth, BuiltinRenderTextureType.CameraTarget, m_CopyDepthMaterial, true); |
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#endif
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if (m_ShadowMapRT) |
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{ |
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cmd.ReleaseTemporaryRT(m_ShadowMapRTID); |
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m_ShadowMapRT = null; |
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} |
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cmd.ReleaseTemporaryRT(m_ScreenSpaceShadowMapRTID); |
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cmd.ReleaseTemporaryRT(CameraRenderTargetID.depthCopy); |
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CommandBufferPool.Release(cmd); |
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context.Submit(); |
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if (m_DirectionalShadowmapRT) |
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{ |
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RenderTexture.ReleaseTemporary(m_DirectionalShadowmapRT); |
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m_DirectionalShadowmapRT = null; |
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} |
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if (m_AdditionalShadowmapRT) |
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{ |
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RenderTexture.ReleaseTemporary(m_AdditionalShadowmapRT); |
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m_AdditionalShadowmapRT = null; |
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} |
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m_ShadowMapRT = null; |
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if (m_Asset.AreShadowsEnabled() && lightData.mainLightIndex != -1) |
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{ |
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VisibleLight mainLight = visibleLights[lightData.mainLightIndex]; |
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m_DirectionalShadowmapRT = null; |
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m_AdditionalShadowmapRT = null; |
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m_LocalLightShadowIndex = -1; |
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m_ShadowSampling = LightShadows.None; |
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m_LocalLightShadowSampling = LightShadows.None; |
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if (mainLight.light.shadows != LightShadows.None) |
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bool directionalShadowmapRendered = false; |
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if (m_Asset.AreShadowsEnabled()) |
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{ |
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if (lightData.mainLightIndex != -1) |
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if (!LightweightUtils.IsSupportedShadowType(mainLight.lightType)) |
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{ |
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Debug.LogWarning("Only directional and spot shadows are supported by LightweightPipeline."); |
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return false; |
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} |
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// There's no way to map shadow light indices. We need to pass in the original unsorted index.
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// If no additional lights then no light sorting is performed and the indices match.
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int shadowOriginalIndex = (lightData.totalAdditionalLightsCount > 0) ? GetLightUnsortedIndex(lightData.mainLightIndex) : lightData.mainLightIndex; |
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bool shadowsRendered = RenderShadows(ref m_CullResults, ref mainLight, shadowOriginalIndex, ref context); |
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if (shadowsRendered) |
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{ |
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lightData.shadowMapSampleType = (m_Asset.ShadowSetting != ShadowType.SOFT_SHADOWS) ? LightShadows.Hard : mainLight.light.shadows; |
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VisibleLight mainLight = visibleLights[lightData.mainLightIndex]; |
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// In order to avoid shader variants explosion we only do hard shadows when sampling shadowmap in the lit pass.
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// GLES2 platform is forced to hard single cascade shadows.
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if (!m_ShadowSettings.screenSpace) |
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lightData.shadowMapSampleType = LightShadows.Hard; |
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} |
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else |
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if (mainLight.lightType == LightType.Directional && mainLight.light.shadows != LightShadows.None) |
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lightData.shadowMapSampleType = LightShadows.None; |
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// There's no way to map shadow light indices. We need to pass in the original unsorted index.
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// If no additional lights then no light sorting is performed and the indices match.
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int shadowOriginalIndex = (lightData.totalAdditionalLightsCount > 0) ? GetLightUnsortedIndex(lightData.mainLightIndex) : lightData.mainLightIndex; |
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directionalShadowmapRendered = RenderDirectionalCascadeShadowmap(ref mainLight, shadowOriginalIndex, ref context); |
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return shadowsRendered; |
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} |
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return false; |
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RenderAdditionalShadowmapAtlas(visibleLights, ref context); |
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} |
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return directionalShadowmapRendered && m_ShadowSettings.screenSpace; |
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} |
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private void ShadowCollectPass(List<VisibleLight> visibleLights, ref ScriptableRenderContext context, ref LightData lightData, FrameRenderingConfiguration frameRenderingConfiguration) |
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} |
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} |
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private void SetupFrameRenderingConfiguration(out FrameRenderingConfiguration configuration, bool shadows, bool stereoEnabled, bool sceneViewCamera) |
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private void SetupFrameRenderingConfiguration(out FrameRenderingConfiguration configuration, bool screenspaceShadows, bool stereoEnabled, bool sceneViewCamera) |
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{ |
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configuration = (stereoEnabled) ? FrameRenderingConfiguration.Stereo : FrameRenderingConfiguration.None; |
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if (stereoEnabled && XRSettings.eyeTextureDesc.dimension == TextureDimension.Tex2DArray) |
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if (sceneViewCamera) |
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m_RequireDepthTexture = true; |
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if (shadows) |
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if (screenspaceShadows) |
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{ |
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m_RequireDepthTexture = m_ShadowSettings.screenSpace; |
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// If msaa is enabled we don't use a depth renderbuffer as we might not have support to Texture2DMS to resolve depth.
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// Instead we use a depth prepass and whenever depth is needed we use the 1 sample depth from prepass.
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// Screen space shadows require depth before opaque shading.
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if (!msaaEnabled && !shadows) |
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if (!msaaEnabled && !screenspaceShadows) |
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{ |
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bool supportsDepthCopy = m_CopyTextureSupport != CopyTextureSupport.None && m_Asset.CopyDepthShader.isSupported; |
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m_DepthRenderBuffer = true; |
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{ |
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int visibleLightsCount = Math.Min(visibleLights.Count, m_Asset.MaxPixelLights); |
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m_SortedLightIndexMap.Clear(); |
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lightData.shadowMapSampleType = LightShadows.None; |
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if (visibleLightsCount <= 1) |
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lightData.mainLightIndex = GetMainLight(visibleLights); |
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{ |
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cmd.SetGlobalVector(PerCameraBuffer._AdditionalLightCount, Vector4.zero); |
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// Clear to default all light cosntant data
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// Clear to default all light constant data
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for (int i = 0; i < kMaxVisibleLights; ++i) |
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InitializeLightConstants(lights, -1, out m_LightPositions[additionalLightIndex], |
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out m_LightColors[additionalLightIndex], |
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cmd.SetGlobalVector("_LightDirection", new Vector4(lightDirection.x, lightDirection.y, lightDirection.z, 0.0f)); |
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} |
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private void SetupShadowReceiverConstants(CommandBuffer cmd, VisibleLight shadowLight, ref ScriptableRenderContext context) |
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private void SetupDirectionalShadowReceiverConstants(CommandBuffer cmd, VisibleLight shadowLight, ref ScriptableRenderContext context) |
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m_ShadowMatrices[i] = (cascadeCount >= i) ? m_ShadowSlices[i].shadowTransform : Matrix4x4.identity; |
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m_ShadowMatrices[i] = (cascadeCount >= i) ? m_ShadowCascadeSlices[i].shadowTransform : Matrix4x4.identity; |
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// We setup and additional a no-op WorldToShadow matrix in the last index
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// because the ComputeCascadeIndex function in Shadows.hlsl can return an index
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float invShadowResolution = 1.0f / m_Asset.ShadowAtlasResolution; |
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float invHalfShadowResolution = 0.5f * invShadowResolution; |
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cmd.SetGlobalTexture(m_DirectionalShadowmapRTID, m_DirectionalShadowmapRT); |
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cmd.SetGlobalMatrixArray(DirectionalShadowConstantBuffer._WorldToShadow, m_ShadowMatrices); |
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cmd.SetGlobalVector(DirectionalShadowConstantBuffer._ShadowData, new Vector4(light.shadowStrength, 0.0f, 0.0f, 0.0f)); |
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cmd.SetGlobalVectorArray(DirectionalShadowConstantBuffer._DirShadowSplitSpheres, m_DirectionalShadowSplitDistances); |
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cmd.SetGlobalVector(DirectionalShadowConstantBuffer._DirShadowSplitSphereRadii, m_DirectionalShadowSplitRadii); |
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cmd.SetGlobalVector(DirectionalShadowConstantBuffer._ShadowOffset0, new Vector4(-invHalfShadowResolution, -invHalfShadowResolution, 0.0f, 0.0f)); |
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cmd.SetGlobalVector(DirectionalShadowConstantBuffer._ShadowOffset1, new Vector4(invHalfShadowResolution, -invHalfShadowResolution, 0.0f, 0.0f)); |
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cmd.SetGlobalVector(DirectionalShadowConstantBuffer._ShadowOffset2, new Vector4(-invHalfShadowResolution, invHalfShadowResolution, 0.0f, 0.0f)); |
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cmd.SetGlobalVector(DirectionalShadowConstantBuffer._ShadowOffset3, new Vector4(invHalfShadowResolution, invHalfShadowResolution, 0.0f, 0.0f)); |
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cmd.SetGlobalVector(DirectionalShadowConstantBuffer._ShadowmapSize, new Vector4(invShadowResolution, invShadowResolution, m_Asset.ShadowAtlasResolution, m_Asset.ShadowAtlasResolution)); |
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context.ExecuteCommandBuffer(cmd); |
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cmd.SetGlobalTexture(m_ShadowMapRTID, m_ShadowMapRT); |
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cmd.SetGlobalMatrixArray(ShadowConstantBuffer._WorldToShadow, m_ShadowMatrices); |
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cmd.SetGlobalVector(ShadowConstantBuffer._ShadowData, new Vector4(light.shadowStrength, 0.0f, 0.0f, 0.0f)); |
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cmd.SetGlobalVectorArray(ShadowConstantBuffer._DirShadowSplitSpheres, m_DirectionalShadowSplitDistances); |
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cmd.SetGlobalVector(ShadowConstantBuffer._DirShadowSplitSphereRadii, m_DirectionalShadowSplitRadii); |
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cmd.SetGlobalVector(ShadowConstantBuffer._ShadowOffset0, new Vector4(-invHalfShadowResolution, -invHalfShadowResolution, 0.0f, 0.0f)); |
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cmd.SetGlobalVector(ShadowConstantBuffer._ShadowOffset1, new Vector4(invHalfShadowResolution, -invHalfShadowResolution, 0.0f, 0.0f)); |
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cmd.SetGlobalVector(ShadowConstantBuffer._ShadowOffset2, new Vector4(-invHalfShadowResolution, invHalfShadowResolution, 0.0f, 0.0f)); |
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cmd.SetGlobalVector(ShadowConstantBuffer._ShadowOffset3, new Vector4(invHalfShadowResolution, invHalfShadowResolution, 0.0f, 0.0f)); |
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cmd.SetGlobalVector(ShadowConstantBuffer._ShadowmapSize, new Vector4(invShadowResolution, invShadowResolution, m_Asset.ShadowAtlasResolution, m_Asset.ShadowAtlasResolution)); |
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} |
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private void SetupLocalLightsShadowReceiverConstants(CommandBuffer cmd, List<VisibleLight> visibleLights, ref ScriptableRenderContext context) |
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{ |
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VisibleLight shadowLight = visibleLights[m_LocalLightShadowIndex]; |
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m_LocalLightShadowMatrices[0] = m_AddtionalShadowSlices[0].shadowTransform; |
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m_LocalLightShadowMatrices[1] = Matrix4x4.identity; |
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m_LocalLightShadowMatrices[2] = Matrix4x4.identity; |
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m_LocalLightShadowMatrices[3] = Matrix4x4.identity; |
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float invShadowResolution = 1.0f / m_LocalLightShadowResolution; |
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float invHalfShadowResolution = 0.5f * invShadowResolution; |
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cmd.SetGlobalTexture(m_AdditionalShadowmapRTID, m_AdditionalShadowmapRT); |
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cmd.SetGlobalMatrixArray(LocalShadowConstantBuffer._LocalWorldToShadow, m_LocalLightShadowMatrices); |
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cmd.SetGlobalVector(LocalShadowConstantBuffer._LocalShadowData, new Vector4(shadowLight.light.shadowStrength, 0.0f, 0.0f, 0.0f)); |
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cmd.SetGlobalVector(LocalShadowConstantBuffer._LocalShadowOffset0, new Vector4(-invHalfShadowResolution, -invHalfShadowResolution, 0.0f, 0.0f)); |
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cmd.SetGlobalVector(LocalShadowConstantBuffer._LocalShadowOffset1, new Vector4(invHalfShadowResolution, -invHalfShadowResolution, 0.0f, 0.0f)); |
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cmd.SetGlobalVector(LocalShadowConstantBuffer._LocalShadowOffset2, new Vector4(-invHalfShadowResolution, invHalfShadowResolution, 0.0f, 0.0f)); |
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cmd.SetGlobalVector(LocalShadowConstantBuffer._LocalShadowOffset3, new Vector4(invHalfShadowResolution, invHalfShadowResolution, 0.0f, 0.0f)); |
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cmd.SetGlobalVector(LocalShadowConstantBuffer._LocalShadowmapSize, new Vector4(invShadowResolution, invShadowResolution, m_LocalLightShadowResolution, m_LocalLightShadowResolution)); |
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cmd.Clear(); |
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} |
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private void SetShaderKeywords(CommandBuffer cmd, ref LightData lightData, List<VisibleLight> visibleLights) |
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int mainLightIndex = lightData.mainLightIndex; |
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//TIM: Not used in shader for V1 to reduce keywords
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CoreUtils.SetKeyword(cmd, "_MAIN_LIGHT_DIRECTIONAL", mainLightIndex == -1 || visibleLights[mainLightIndex].lightType == LightType.Directional); |
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//TIM: Not used in shader for V1 to reduce keywords
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CoreUtils.SetKeyword(cmd, "_MAIN_LIGHT_SPOT", mainLightIndex != -1 && visibleLights[mainLightIndex].lightType == LightType.Spot); |
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//TIM: Not used in shader for V1 to reduce keywords
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CoreUtils.SetKeyword(cmd, "_SHADOWS_ENABLED", lightData.shadowMapSampleType != LightShadows.None); |
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CoreUtils.SetKeyword(cmd, "_SHADOWS_ENABLED", m_ShadowSampling != LightShadows.None); |
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CoreUtils.SetKeyword(cmd, "_LOCAL_SHADOWS_ENABLED", m_LocalLightShadowSampling != LightShadows.None); |
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//TIM: Not used in shader for V1 to reduce keywords
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CoreUtils.SetKeyword(cmd, "_MAIN_LIGHT_COOKIE", mainLightIndex != -1 && LightweightUtils.IsSupportedCookieType(visibleLights[mainLightIndex].lightType) && visibleLights[mainLightIndex].light.cookie != null); |
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private void SetShadowCollectPassKeywords(CommandBuffer cmd, VisibleLight shadowLight, ref LightData lightData) |
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{ |
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bool cascadeShadows = shadowLight.lightType == LightType.Directional && m_Asset.CascadeCount > 1; |
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CoreUtils.SetKeyword(cmd, "_SHADOWS_SOFT", lightData.shadowMapSampleType == LightShadows.Soft); |
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CoreUtils.SetKeyword(cmd, "_SHADOWS_CASCADE", cascadeShadows); |
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CoreUtils.SetKeyword(cmd, "_SHADOWS_SOFT", m_ShadowSampling == LightShadows.Soft); |
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CoreUtils.SetKeyword(cmd, "_SHADOWS_CASCADE", m_Asset.CascadeCount > 1); |
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private bool RenderShadows(ref CullResults cullResults, ref VisibleLight shadowLight, int shadowLightIndex, ref ScriptableRenderContext context) |
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private bool RenderDirectionalCascadeShadowmap(ref VisibleLight shadowLight, int shadowLightIndex, ref ScriptableRenderContext context) |
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CommandBuffer cmd = CommandBufferPool.Get("Prepare Directional Shadowmap"); |
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if (shadowLight.lightType == LightType.Spot) |
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m_ShadowCasterCascadesCount = 1; |
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float shadowNearPlane = m_Asset.ShadowNearOffset; |
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if (!cullResults.GetShadowCasterBounds(shadowLightIndex, out bounds)) |
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if (!m_CullResults.GetShadowCasterBounds(shadowLightIndex, out bounds)) |
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float shadowNearPlane = m_Asset.ShadowNearOffset; |
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var settings = new DrawShadowsSettings(cullResults, shadowLightIndex); |
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bool success = false; |
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var settings = new DrawShadowsSettings(m_CullResults, shadowLightIndex); |
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var cmd = CommandBufferPool.Get("Prepare Shadowmap"); |
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m_ShadowMapRT = RenderTexture.GetTemporary(shadowmapDescriptor); |
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m_ShadowMapRT.filterMode = FilterMode.Bilinear; |
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m_ShadowMapRT.wrapMode = TextureWrapMode.Clamp; |
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m_DirectionalShadowmapRT = RenderTexture.GetTemporary(shadowmapDescriptor); |
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m_DirectionalShadowmapRT.filterMode = FilterMode.Bilinear; |
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m_DirectionalShadowmapRT.wrapMode = TextureWrapMode.Clamp; |
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CoreUtils.SetRenderTarget(cmd, m_ShadowMapRT, ClearFlag.Depth, CoreUtils.ConvertSRGBToActiveColorSpace(m_CurrCamera.backgroundColor)); |
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CoreUtils.SetRenderTarget(cmd, m_DirectionalShadowmapRT, ClearFlag.Depth, CoreUtils.ConvertSRGBToActiveColorSpace(m_CurrCamera.backgroundColor)); |
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if (shadowLight.lightType == LightType.Spot) |
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bool success = false; |
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for (int cascadeIndex = 0; cascadeIndex < m_ShadowCasterCascadesCount; ++cascadeIndex) |
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success = cullResults.ComputeSpotShadowMatricesAndCullingPrimitives(shadowLightIndex, out view, out proj, |
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success = m_CullResults.ComputeDirectionalShadowMatricesAndCullingPrimitives(shadowLightIndex, |
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cascadeIndex, m_ShadowCasterCascadesCount, m_ShadowSettings.directionalLightCascades, shadowResolution, shadowNearPlane, out view, out proj, |
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if (success) |
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{ |
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SetupShadowCasterConstants(cmd, ref shadowLight, proj, shadowResolution); |
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SetupShadowSliceTransform(0, shadowResolution, proj, view); |
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RenderShadowSlice(cmd, ref context, 0, proj, view, settings); |
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} |
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} |
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else if (shadowLight.lightType == LightType.Directional) |
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{ |
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for (int cascadeIdx = 0; cascadeIdx < m_ShadowCasterCascadesCount; ++cascadeIdx) |
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{ |
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success = cullResults.ComputeDirectionalShadowMatricesAndCullingPrimitives(shadowLightIndex, |
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cascadeIdx, m_ShadowCasterCascadesCount, m_ShadowSettings.directionalLightCascades, shadowResolution, shadowNearPlane, out view, out proj, |
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|
|
out settings.splitData); |
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float cullingSphereRadius = settings.splitData.cullingSphere.w; |
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|
m_DirectionalShadowSplitDistances[cascadeIndex] = settings.splitData.cullingSphere; |
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|
m_DirectionalShadowSplitRadii[cascadeIndex] = cullingSphereRadius * cullingSphereRadius; |
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|
|
float cullingSphereRadius = settings.splitData.cullingSphere.w; |
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|
|
m_DirectionalShadowSplitDistances[cascadeIdx] = settings.splitData.cullingSphere; |
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|
|
m_DirectionalShadowSplitRadii[cascadeIdx] = cullingSphereRadius * cullingSphereRadius; |
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|
|
if (!success) |
|
|
|
break; |
|
|
|
if (!success) |
|
|
|
break; |
|
|
|
int atlasX = (cascadeIndex % 2) * shadowResolution; |
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|
|
int atlasY = (cascadeIndex / 2) * shadowResolution; |
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|
|
float atlasWidth = (float)m_ShadowSettings.shadowAtlasWidth; |
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|
|
float atlasHeight = (float)m_ShadowSettings.shadowAtlasHeight; |
|
|
|
Rect shadowSliceRect = new Rect((float)atlasX, (float)atlasY, atlasWidth, atlasHeight); |
|
|
|
SetupShadowCasterConstants(cmd, ref shadowLight, proj, shadowResolution); |
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|
|
SetupShadowSliceTransform(cascadeIdx, shadowResolution, proj, view); |
|
|
|
RenderShadowSlice(cmd, ref context, cascadeIdx, proj, view, settings); |
|
|
|
} |
|
|
|
} |
|
|
|
else |
|
|
|
{ |
|
|
|
Debug.LogWarning("Only spot and directional shadow casters are supported in lightweight pipeline"); |
|
|
|
SetupShadowCasterConstants(cmd, ref shadowLight, proj, shadowResolution); |
|
|
|
SetupShadowSliceTransform(ref shadowSliceRect, shadowResolution, proj, view, out m_ShadowCascadeSlices[cascadeIndex]); |
|
|
|
RenderShadowSlice(cmd, ref context, ref m_ShadowCascadeSlices[cascadeIndex], proj, view, settings); |
|
|
|
SetupShadowReceiverConstants(cmd, shadowLight, ref context); |
|
|
|
{ |
|
|
|
m_ShadowSampling = (m_Asset.ShadowSetting != ShadowType.SOFT_SHADOWS) ? LightShadows.Hard : shadowLight.light.shadows; |
|
|
|
// In order to avoid shader variants explosion we only do hard shadows when sampling shadowmap in the lit pass.
|
|
|
|
// GLES2 platform is forced to hard single cascade shadows.
|
|
|
|
if (!m_ShadowSettings.screenSpace) |
|
|
|
m_ShadowSampling = LightShadows.Hard; |
|
|
|
|
|
|
|
SetupDirectionalShadowReceiverConstants(cmd, shadowLight, ref context); |
|
|
|
} |
|
|
|
|
|
|
|
context.ExecuteCommandBuffer(cmd); |
|
|
|
private void SetupShadowSliceTransform(int cascadeIndex, int shadowResolution, Matrix4x4 proj, Matrix4x4 view) |
|
|
|
private bool RenderAdditionalShadowmapAtlas(List<VisibleLight> visibleLights, ref ScriptableRenderContext context) |
|
|
|
if (cascadeIndex >= kMaxCascades) |
|
|
|
CommandBuffer cmd = CommandBufferPool.Get("Prepare Local Lights Shadowmap"); |
|
|
|
Matrix4x4 view, proj; |
|
|
|
Bounds bounds; |
|
|
|
bool success = false; |
|
|
|
int shadowResolution = m_LocalLightShadowResolution; |
|
|
|
int shadowSampling = 0; |
|
|
|
|
|
|
|
RenderTextureDescriptor shadowmapDescriptor = new RenderTextureDescriptor(shadowResolution, shadowResolution, m_ShadowSettings.shadowmapTextureFormat, kShadowBufferBits); |
|
|
|
shadowmapDescriptor.shadowSamplingMode = ShadowSamplingMode.CompareDepths; |
|
|
|
m_AdditionalShadowmapRT = RenderTexture.GetTemporary(shadowmapDescriptor); |
|
|
|
m_AdditionalShadowmapRT.filterMode = FilterMode.Bilinear; |
|
|
|
m_AdditionalShadowmapRT.wrapMode = TextureWrapMode.Clamp; |
|
|
|
|
|
|
|
// LightweightPipeline.SetRenderTarget is meant to be used with camera targets, not shadowmaps
|
|
|
|
CoreUtils.SetRenderTarget(cmd, m_AdditionalShadowmapRT, ClearFlag.Depth, CoreUtils.ConvertSRGBToActiveColorSpace(m_CurrCamera.backgroundColor)); |
|
|
|
|
|
|
|
for (int i = 0; i < visibleLights.Count; ++i) |
|
|
|
Debug.LogError(String.Format("{0} is an invalid cascade index. Maximum of {1} cascades", cascadeIndex, kMaxCascades)); |
|
|
|
return; |
|
|
|
VisibleLight shadowLight = visibleLights[i]; |
|
|
|
|
|
|
|
if (shadowLight.lightType != LightType.Spot) |
|
|
|
continue; |
|
|
|
|
|
|
|
int shadowLightIndex = GetLightUnsortedIndex(i); |
|
|
|
if (!m_CullResults.GetShadowCasterBounds(shadowLightIndex, out bounds)) |
|
|
|
continue; |
|
|
|
|
|
|
|
var settings = new DrawShadowsSettings(m_CullResults, shadowLightIndex); |
|
|
|
|
|
|
|
success = m_CullResults.ComputeSpotShadowMatricesAndCullingPrimitives(shadowLightIndex, out view, out proj, out settings.splitData); |
|
|
|
if (success) |
|
|
|
{ |
|
|
|
Rect shadowSliceRect = new Rect(0.0f, 0.0f, shadowResolution, shadowResolution); |
|
|
|
SetupShadowCasterConstants(cmd, ref shadowLight, proj, shadowResolution); |
|
|
|
SetupShadowSliceTransform(ref shadowSliceRect, shadowResolution, proj, view, out m_AddtionalShadowSlices[0]); |
|
|
|
RenderShadowSlice(cmd, ref context, ref m_AddtionalShadowSlices[0], proj, view, settings); |
|
|
|
m_LocalLightShadowIndex = i; |
|
|
|
shadowSampling = Math.Max(shadowSampling, (int)shadowLight.light.shadows); |
|
|
|
break; |
|
|
|
} |
|
|
|
int atlasX = (cascadeIndex % 2) * shadowResolution; |
|
|
|
int atlasY = (cascadeIndex / 2) * shadowResolution; |
|
|
|
float atlasWidth = (float)m_ShadowSettings.shadowAtlasWidth; |
|
|
|
float atlasHeight = (float)m_ShadowSettings.shadowAtlasHeight; |
|
|
|
if (success) |
|
|
|
SetupLocalLightsShadowReceiverConstants(cmd, visibleLights, ref context); |
|
|
|
|
|
|
|
m_LocalLightShadowSampling = (LightShadows)Math.Min(shadowSampling, (int)m_Asset.ShadowSetting); |
|
|
|
context.ExecuteCommandBuffer(cmd); |
|
|
|
cmd.Clear(); |
|
|
|
return success; |
|
|
|
} |
|
|
|
// Currently CullResults ComputeDirectionalShadowMatricesAndCullingPrimitives doesn't
|
|
|
|
private void SetupShadowSliceTransform(ref Rect shadowSliceRect, int shadowResolution, Matrix4x4 proj, Matrix4x4 view, out ShadowSliceData shadowSliceData) |
|
|
|
{ |
|
|
|
// Currently CullResults ComputeDirectionalShadowMatricesAndCullingPrimitives doesn't
|
|
|
|
// apply z reversal to projection matrix. We need to do it manually here.
|
|
|
|
if (SystemInfo.usesReversedZBuffer) |
|
|
|
{ |
|
|
|
|
|
|
|
worldToShadow = textureScaleAndBias * worldToShadow; |
|
|
|
|
|
|
|
var cascadeAtlas = Matrix4x4.identity; |
|
|
|
cascadeAtlas.m00 = (float)shadowResolution / atlasWidth; |
|
|
|
cascadeAtlas.m11 = (float)shadowResolution / atlasHeight; |
|
|
|
cascadeAtlas.m03 = (float)atlasX / atlasWidth; |
|
|
|
cascadeAtlas.m13 = (float)atlasY / atlasHeight; |
|
|
|
cascadeAtlas.m00 = (float)shadowResolution / shadowSliceRect.width; |
|
|
|
cascadeAtlas.m11 = (float)shadowResolution / shadowSliceRect.height; |
|
|
|
cascadeAtlas.m03 = shadowSliceRect.x / shadowSliceRect.width; |
|
|
|
cascadeAtlas.m13 = shadowSliceRect.y / shadowSliceRect.height; |
|
|
|
m_ShadowSlices[cascadeIndex].atlasX = atlasX; |
|
|
|
m_ShadowSlices[cascadeIndex].atlasY = atlasY; |
|
|
|
m_ShadowSlices[cascadeIndex].shadowResolution = shadowResolution; |
|
|
|
m_ShadowSlices[cascadeIndex].shadowTransform = worldToShadow; |
|
|
|
shadowSliceData.atlasX = (int)shadowSliceRect.x; |
|
|
|
shadowSliceData.atlasY = (int)shadowSliceRect.y; |
|
|
|
shadowSliceData.shadowResolution = shadowResolution; |
|
|
|
shadowSliceData.shadowTransform = worldToShadow; |
|
|
|
private void RenderShadowSlice(CommandBuffer cmd, ref ScriptableRenderContext context, int cascadeIndex, |
|
|
|
private void RenderShadowSlice(CommandBuffer cmd, ref ScriptableRenderContext context, ref ShadowSliceData shadowSliceData, |
|
|
|
cmd.SetViewport(new Rect(m_ShadowSlices[cascadeIndex].atlasX, m_ShadowSlices[cascadeIndex].atlasY, |
|
|
|
m_ShadowSlices[cascadeIndex].shadowResolution, m_ShadowSlices[cascadeIndex].shadowResolution)); |
|
|
|
cmd.EnableScissorRect(new Rect(m_ShadowSlices[cascadeIndex].atlasX + 4, m_ShadowSlices[cascadeIndex].atlasY + 4, |
|
|
|
m_ShadowSlices[cascadeIndex].shadowResolution - 8, m_ShadowSlices[cascadeIndex].shadowResolution - 8)); |
|
|
|
cmd.SetViewport(new Rect(shadowSliceData.atlasX, shadowSliceData.atlasY, shadowSliceData.shadowResolution, shadowSliceData.shadowResolution)); |
|
|
|
cmd.EnableScissorRect(new Rect(shadowSliceData.atlasX + 4, shadowSliceData.atlasY + 4, shadowSliceData.shadowResolution - 8, shadowSliceData.shadowResolution - 8)); |
|
|
|
|
|
|
|
cmd.SetViewProjectionMatrices(view, proj); |
|
|
|
context.ExecuteCommandBuffer(cmd); |
|
|
|
|
Felipe Lira
7 年前