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398 行
21 KiB
398 行
21 KiB
namespace UnityEngine.Rendering.Universal
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{
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internal class ForwardRenderer : ScriptableRenderer
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{
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const int k_DepthStencilBufferBits = 32;
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const string k_CreateCameraTextures = "Create Camera Texture";
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ColorGradingLutPass m_ColorGradingLutPass;
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DepthOnlyPass m_DepthPrepass;
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MainLightShadowCasterPass m_MainLightShadowCasterPass;
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AdditionalLightsShadowCasterPass m_AdditionalLightsShadowCasterPass;
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ScreenSpaceShadowResolvePass m_ScreenSpaceShadowResolvePass;
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DrawObjectsPass m_RenderOpaqueForwardPass;
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DrawSkyboxPass m_DrawSkyboxPass;
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CopyDepthPass m_CopyDepthPass;
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CopyColorPass m_CopyColorPass;
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DrawObjectsPass m_RenderTransparentForwardPass;
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InvokeOnRenderObjectCallbackPass m_OnRenderObjectCallbackPass;
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PostProcessPass m_PostProcessPass;
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PostProcessPass m_FinalPostProcessPass;
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FinalBlitPass m_FinalBlitPass;
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CapturePass m_CapturePass;
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#if UNITY_EDITOR
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SceneViewDepthCopyPass m_SceneViewDepthCopyPass;
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#endif
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RenderTargetHandle m_ActiveCameraColorAttachment;
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RenderTargetHandle m_ActiveCameraDepthAttachment;
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RenderTargetHandle m_CameraColorAttachment;
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RenderTargetHandle m_CameraDepthAttachment;
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RenderTargetHandle m_DepthTexture;
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RenderTargetHandle m_OpaqueColor;
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RenderTargetHandle m_AfterPostProcessColor;
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RenderTargetHandle m_ColorGradingLut;
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ForwardLights m_ForwardLights;
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StencilState m_DefaultStencilState;
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public ForwardRenderer(ForwardRendererData data) : base(data)
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{
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Material blitMaterial = CoreUtils.CreateEngineMaterial(data.shaders.blitPS);
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Material copyDepthMaterial = CoreUtils.CreateEngineMaterial(data.shaders.copyDepthPS);
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Material samplingMaterial = CoreUtils.CreateEngineMaterial(data.shaders.samplingPS);
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Material screenspaceShadowsMaterial = CoreUtils.CreateEngineMaterial(data.shaders.screenSpaceShadowPS);
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StencilStateData stencilData = data.defaultStencilState;
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m_DefaultStencilState = StencilState.defaultValue;
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m_DefaultStencilState.enabled = stencilData.overrideStencilState;
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m_DefaultStencilState.SetCompareFunction(stencilData.stencilCompareFunction);
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m_DefaultStencilState.SetPassOperation(stencilData.passOperation);
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m_DefaultStencilState.SetFailOperation(stencilData.failOperation);
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m_DefaultStencilState.SetZFailOperation(stencilData.zFailOperation);
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// Note: Since all custom render passes inject first and we have stable sort,
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// we inject the builtin passes in the before events.
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m_MainLightShadowCasterPass = new MainLightShadowCasterPass(RenderPassEvent.BeforeRenderingShadows);
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m_AdditionalLightsShadowCasterPass = new AdditionalLightsShadowCasterPass(RenderPassEvent.BeforeRenderingShadows);
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m_DepthPrepass = new DepthOnlyPass(RenderPassEvent.BeforeRenderingPrepasses, RenderQueueRange.opaque, data.opaqueLayerMask);
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m_ScreenSpaceShadowResolvePass = new ScreenSpaceShadowResolvePass(RenderPassEvent.BeforeRenderingPrepasses, screenspaceShadowsMaterial);
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m_ColorGradingLutPass = new ColorGradingLutPass(RenderPassEvent.BeforeRenderingOpaques, data.postProcessData);
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m_RenderOpaqueForwardPass = new DrawObjectsPass("Render Opaques", true, RenderPassEvent.BeforeRenderingOpaques, RenderQueueRange.opaque, data.opaqueLayerMask, m_DefaultStencilState, stencilData.stencilReference);
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m_CopyDepthPass = new CopyDepthPass(RenderPassEvent.BeforeRenderingOpaques, copyDepthMaterial);
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m_DrawSkyboxPass = new DrawSkyboxPass(RenderPassEvent.BeforeRenderingSkybox);
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m_CopyColorPass = new CopyColorPass(RenderPassEvent.BeforeRenderingTransparents, samplingMaterial);
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m_RenderTransparentForwardPass = new DrawObjectsPass("Render Transparents", false, RenderPassEvent.BeforeRenderingTransparents, RenderQueueRange.transparent, data.transparentLayerMask, m_DefaultStencilState, stencilData.stencilReference);
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m_OnRenderObjectCallbackPass = new InvokeOnRenderObjectCallbackPass(RenderPassEvent.BeforeRenderingPostProcessing);
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m_PostProcessPass = new PostProcessPass(RenderPassEvent.BeforeRenderingPostProcessing, data.postProcessData);
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m_FinalPostProcessPass = new PostProcessPass(RenderPassEvent.AfterRenderingPostProcessing, data.postProcessData);
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m_CapturePass = new CapturePass(RenderPassEvent.AfterRendering);
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m_FinalBlitPass = new FinalBlitPass(RenderPassEvent.AfterRendering, blitMaterial);
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#if UNITY_EDITOR
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m_SceneViewDepthCopyPass = new SceneViewDepthCopyPass(RenderPassEvent.AfterRendering + 9, copyDepthMaterial);
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#endif
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// RenderTexture format depends on camera and pipeline (HDR, non HDR, etc)
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// Samples (MSAA) depend on camera and pipeline
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m_CameraColorAttachment.Init("_CameraColorTexture");
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m_CameraDepthAttachment.Init("_CameraDepthAttachment");
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m_DepthTexture.Init("_CameraDepthTexture");
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m_OpaqueColor.Init("_CameraOpaqueTexture");
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m_AfterPostProcessColor.Init("_AfterPostProcessTexture");
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m_ColorGradingLut.Init("_InternalGradingLut");
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m_ForwardLights = new ForwardLights();
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}
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public override void Setup(ScriptableRenderContext context, ref RenderingData renderingData)
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{
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Camera camera = renderingData.cameraData.camera;
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ref CameraData cameraData = ref renderingData.cameraData;
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RenderTextureDescriptor cameraTargetDescriptor = renderingData.cameraData.cameraTargetDescriptor;
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// Special path for depth only offscreen cameras. Only write opaques + transparents.
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bool isOffscreenDepthTexture = camera.targetTexture != null && camera.targetTexture.format == RenderTextureFormat.Depth;
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if (isOffscreenDepthTexture)
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{
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ConfigureCameraTarget(BuiltinRenderTextureType.CameraTarget, BuiltinRenderTextureType.CameraTarget);
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for (int i = 0; i < rendererFeatures.Count; ++i)
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rendererFeatures[i].AddRenderPasses(this, ref renderingData);
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EnqueuePass(m_RenderOpaqueForwardPass);
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EnqueuePass(m_DrawSkyboxPass);
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EnqueuePass(m_RenderTransparentForwardPass);
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return;
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}
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bool mainLightShadows = m_MainLightShadowCasterPass.Setup(ref renderingData);
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bool additionalLightShadows = m_AdditionalLightsShadowCasterPass.Setup(ref renderingData);
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bool resolveShadowsInScreenSpace = mainLightShadows && renderingData.shadowData.requiresScreenSpaceShadowResolve;
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// Depth prepass is generated in the following cases:
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// - We resolve shadows in screen space
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// - Scene view camera always requires a depth texture. We do a depth pre-pass to simplify it and it shouldn't matter much for editor.
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// - If game or offscreen camera requires it we check if we can copy the depth from the rendering opaques pass and use that instead.
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bool requiresDepthPrepass = renderingData.cameraData.isSceneViewCamera ||
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(cameraData.requiresDepthTexture && (!CanCopyDepth(ref renderingData.cameraData)));
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requiresDepthPrepass |= resolveShadowsInScreenSpace;
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// TODO: There's an issue in multiview and depth copy pass. Atm forcing a depth prepass on XR until
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// we have a proper fix.
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if (cameraData.isStereoEnabled && cameraData.requiresDepthTexture)
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requiresDepthPrepass = true;
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bool createColorTexture = RequiresIntermediateColorTexture(ref renderingData, cameraTargetDescriptor)
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|| rendererFeatures.Count != 0;
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// If camera requires depth and there's no depth pre-pass we create a depth texture that can be read
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// later by effect requiring it.
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bool createDepthTexture = cameraData.requiresDepthTexture && !requiresDepthPrepass;
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bool postProcessEnabled = cameraData.postProcessEnabled;
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m_ActiveCameraColorAttachment = (createColorTexture) ? m_CameraColorAttachment : RenderTargetHandle.CameraTarget;
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m_ActiveCameraDepthAttachment = (createDepthTexture) ? m_CameraDepthAttachment : RenderTargetHandle.CameraTarget;
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bool intermediateRenderTexture = createColorTexture || createDepthTexture;
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if (intermediateRenderTexture)
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CreateCameraRenderTarget(context, ref cameraData);
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ConfigureCameraTarget(m_ActiveCameraColorAttachment.Identifier(), m_ActiveCameraDepthAttachment.Identifier());
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// if rendering to intermediate render texture we don't have to create msaa backbuffer
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int backbufferMsaaSamples = (intermediateRenderTexture) ? 1 : cameraTargetDescriptor.msaaSamples;
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if (Camera.main == camera && camera.cameraType == CameraType.Game && camera.targetTexture == null)
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SetupBackbufferFormat(backbufferMsaaSamples, renderingData.cameraData.isStereoEnabled);
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for (int i = 0; i < rendererFeatures.Count; ++i)
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{
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rendererFeatures[i].AddRenderPasses(this, ref renderingData);
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}
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int count = activeRenderPassQueue.Count;
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for (int i = count - 1; i >= 0; i--)
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{
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if(activeRenderPassQueue[i] == null)
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activeRenderPassQueue.RemoveAt(i);
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}
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bool hasAfterRendering = activeRenderPassQueue.Find(x => x.renderPassEvent == RenderPassEvent.AfterRendering) != null;
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if (mainLightShadows)
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EnqueuePass(m_MainLightShadowCasterPass);
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if (additionalLightShadows)
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EnqueuePass(m_AdditionalLightsShadowCasterPass);
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if (requiresDepthPrepass)
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{
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m_DepthPrepass.Setup(cameraTargetDescriptor, m_DepthTexture);
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EnqueuePass(m_DepthPrepass);
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}
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if (resolveShadowsInScreenSpace)
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{
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m_ScreenSpaceShadowResolvePass.Setup(cameraTargetDescriptor);
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EnqueuePass(m_ScreenSpaceShadowResolvePass);
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}
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if (postProcessEnabled)
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{
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m_ColorGradingLutPass.Setup(m_ColorGradingLut);
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EnqueuePass(m_ColorGradingLutPass);
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}
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EnqueuePass(m_RenderOpaqueForwardPass);
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if (camera.clearFlags == CameraClearFlags.Skybox && RenderSettings.skybox != null)
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EnqueuePass(m_DrawSkyboxPass);
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// If a depth texture was created we necessarily need to copy it, otherwise we could have render it to a renderbuffer
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if (createDepthTexture)
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{
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m_CopyDepthPass.Setup(m_ActiveCameraDepthAttachment, m_DepthTexture);
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EnqueuePass(m_CopyDepthPass);
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}
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if (renderingData.cameraData.requiresOpaqueTexture)
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{
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// TODO: Downsampling method should be store in the renderer isntead of in the asset.
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// We need to migrate this data to renderer. For now, we query the method in the active asset.
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Downsampling downsamplingMethod = UniversalRenderPipeline.asset.opaqueDownsampling;
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m_CopyColorPass.Setup(m_ActiveCameraColorAttachment.Identifier(), m_OpaqueColor, downsamplingMethod);
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EnqueuePass(m_CopyColorPass);
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}
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EnqueuePass(m_RenderTransparentForwardPass);
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EnqueuePass(m_OnRenderObjectCallbackPass);
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bool afterRenderExists = renderingData.cameraData.captureActions != null ||
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hasAfterRendering;
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bool requiresFinalPostProcessPass = postProcessEnabled &&
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renderingData.cameraData.antialiasing == AntialiasingMode.FastApproximateAntialiasing;
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// if we have additional filters
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// we need to stay in a RT
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if (afterRenderExists)
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{
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// perform post with src / dest the same
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if (postProcessEnabled)
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{
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m_PostProcessPass.Setup(cameraTargetDescriptor, m_ActiveCameraColorAttachment, m_AfterPostProcessColor, m_ActiveCameraDepthAttachment, m_ColorGradingLut);
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EnqueuePass(m_PostProcessPass);
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}
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//now blit into the final target
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if (m_ActiveCameraColorAttachment != RenderTargetHandle.CameraTarget)
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{
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if (renderingData.cameraData.captureActions != null)
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{
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m_CapturePass.Setup(m_ActiveCameraColorAttachment);
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EnqueuePass(m_CapturePass);
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}
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if (requiresFinalPostProcessPass)
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{
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m_FinalPostProcessPass.SetupFinalPass(m_ActiveCameraColorAttachment);
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EnqueuePass(m_FinalPostProcessPass);
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}
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else
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{
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m_FinalBlitPass.Setup(cameraTargetDescriptor, m_ActiveCameraColorAttachment);
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EnqueuePass(m_FinalBlitPass);
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}
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}
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}
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else
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{
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if (postProcessEnabled)
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{
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if (requiresFinalPostProcessPass)
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{
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m_PostProcessPass.Setup(cameraTargetDescriptor, m_ActiveCameraColorAttachment, m_AfterPostProcessColor, m_ActiveCameraDepthAttachment, m_ColorGradingLut);
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EnqueuePass(m_PostProcessPass);
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m_FinalPostProcessPass.SetupFinalPass(m_AfterPostProcessColor);
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EnqueuePass(m_FinalPostProcessPass);
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}
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else
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{
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m_PostProcessPass.Setup(cameraTargetDescriptor, m_ActiveCameraColorAttachment, RenderTargetHandle.CameraTarget, m_ActiveCameraDepthAttachment, m_ColorGradingLut);
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EnqueuePass(m_PostProcessPass);
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}
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}
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else if (m_ActiveCameraColorAttachment != RenderTargetHandle.CameraTarget)
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{
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m_FinalBlitPass.Setup(cameraTargetDescriptor, m_ActiveCameraColorAttachment);
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EnqueuePass(m_FinalBlitPass);
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}
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}
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#if UNITY_EDITOR
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if (renderingData.cameraData.isSceneViewCamera)
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{
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m_SceneViewDepthCopyPass.Setup(m_DepthTexture);
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EnqueuePass(m_SceneViewDepthCopyPass);
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}
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#endif
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}
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public override void SetupLights(ScriptableRenderContext context, ref RenderingData renderingData)
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{
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m_ForwardLights.Setup(context, ref renderingData);
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}
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public override void SetupCullingParameters(ref ScriptableCullingParameters cullingParameters,
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ref CameraData cameraData)
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{
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Camera camera = cameraData.camera;
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// TODO: PerObjectCulling also affect reflection probes. Enabling it for now.
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// if (asset.additionalLightsRenderingMode == LightRenderingMode.Disabled ||
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// asset.maxAdditionalLightsCount == 0)
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// {
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// cullingParameters.cullingOptions |= CullingOptions.DisablePerObjectCulling;
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// }
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cullingParameters.shadowDistance = Mathf.Min(cameraData.maxShadowDistance, camera.farClipPlane);
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}
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public override void FinishRendering(CommandBuffer cmd)
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{
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if (m_ActiveCameraColorAttachment != RenderTargetHandle.CameraTarget)
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cmd.ReleaseTemporaryRT(m_ActiveCameraColorAttachment.id);
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if (m_ActiveCameraDepthAttachment != RenderTargetHandle.CameraTarget)
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cmd.ReleaseTemporaryRT(m_ActiveCameraDepthAttachment.id);
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}
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void CreateCameraRenderTarget(ScriptableRenderContext context, ref CameraData cameraData)
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{
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CommandBuffer cmd = CommandBufferPool.Get(k_CreateCameraTextures);
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var descriptor = cameraData.cameraTargetDescriptor;
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int msaaSamples = descriptor.msaaSamples;
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if (m_ActiveCameraColorAttachment != RenderTargetHandle.CameraTarget)
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{
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bool useDepthRenderBuffer = m_ActiveCameraDepthAttachment == RenderTargetHandle.CameraTarget;
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var colorDescriptor = descriptor;
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colorDescriptor.depthBufferBits = (useDepthRenderBuffer) ? k_DepthStencilBufferBits : 0;
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cmd.GetTemporaryRT(m_ActiveCameraColorAttachment.id, colorDescriptor, FilterMode.Bilinear);
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}
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if (m_ActiveCameraDepthAttachment != RenderTargetHandle.CameraTarget)
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{
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var depthDescriptor = descriptor;
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depthDescriptor.colorFormat = RenderTextureFormat.Depth;
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depthDescriptor.depthBufferBits = k_DepthStencilBufferBits;
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depthDescriptor.bindMS = msaaSamples > 1 && !SystemInfo.supportsMultisampleAutoResolve && (SystemInfo.supportsMultisampledTextures != 0);
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cmd.GetTemporaryRT(m_ActiveCameraDepthAttachment.id, depthDescriptor, FilterMode.Point);
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}
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context.ExecuteCommandBuffer(cmd);
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CommandBufferPool.Release(cmd);
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}
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void SetupBackbufferFormat(int msaaSamples, bool stereo)
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{
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#if ENABLE_VR
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bool msaaSampleCountHasChanged = false;
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int currentQualitySettingsSampleCount = QualitySettings.antiAliasing;
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if (currentQualitySettingsSampleCount != msaaSamples &&
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!(currentQualitySettingsSampleCount == 0 && msaaSamples == 1))
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{
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msaaSampleCountHasChanged = true;
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}
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// There's no exposed API to control how a backbuffer is created with MSAA
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// By settings antiAliasing we match what the amount of samples in camera data with backbuffer
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// We only do this for the main camera and this only takes effect in the beginning of next frame.
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// This settings should not be changed on a frame basis so that's fine.
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QualitySettings.antiAliasing = msaaSamples;
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if (stereo && msaaSampleCountHasChanged)
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XR.XRDevice.UpdateEyeTextureMSAASetting();
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#else
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QualitySettings.antiAliasing = msaaSamples;
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#endif
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}
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bool RequiresIntermediateColorTexture(ref RenderingData renderingData, RenderTextureDescriptor baseDescriptor)
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{
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ref CameraData cameraData = ref renderingData.cameraData;
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int msaaSamples = cameraData.cameraTargetDescriptor.msaaSamples;
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bool isStereoEnabled = renderingData.cameraData.isStereoEnabled;
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bool isScaledRender = !Mathf.Approximately(cameraData.renderScale, 1.0f);
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bool isCompatibleBackbufferTextureDimension = baseDescriptor.dimension == TextureDimension.Tex2D;
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bool requiresExplicitMsaaResolve = msaaSamples > 1 && !SystemInfo.supportsMultisampleAutoResolve;
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bool isOffscreenRender = cameraData.camera.targetTexture != null && !cameraData.isSceneViewCamera;
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bool isCapturing = cameraData.captureActions != null;
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#if ENABLE_VR
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if (isStereoEnabled)
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isCompatibleBackbufferTextureDimension = UnityEngine.XR.XRSettings.deviceEyeTextureDimension == baseDescriptor.dimension;
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#endif//ENABLE_VR
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bool requiresBlitForOffscreenCamera = cameraData.postProcessEnabled || cameraData.requiresOpaqueTexture || requiresExplicitMsaaResolve;
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if (isOffscreenRender)
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return requiresBlitForOffscreenCamera;
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return requiresBlitForOffscreenCamera || cameraData.isSceneViewCamera || isScaledRender || cameraData.isHdrEnabled ||
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!isCompatibleBackbufferTextureDimension || !cameraData.isDefaultViewport || isCapturing || Display.main.requiresBlitToBackbuffer
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|| (renderingData.killAlphaInFinalBlit && !isStereoEnabled);
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}
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bool CanCopyDepth(ref CameraData cameraData)
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{
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bool msaaEnabledForCamera = cameraData.cameraTargetDescriptor.msaaSamples > 1;
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bool supportsTextureCopy = SystemInfo.copyTextureSupport != CopyTextureSupport.None;
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bool supportsDepthTarget = RenderingUtils.SupportsRenderTextureFormat(RenderTextureFormat.Depth);
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bool supportsDepthCopy = !msaaEnabledForCamera && (supportsDepthTarget || supportsTextureCopy);
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// TODO: We don't have support to highp Texture2DMS currently and this breaks depth precision.
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// currently disabling it until shader changes kick in.
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//bool msaaDepthResolve = msaaEnabledForCamera && SystemInfo.supportsMultisampledTextures != 0;
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bool msaaDepthResolve = false;
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return supportsDepthCopy || msaaDepthResolve;
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}
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}
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}
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