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using System; |
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using UnityEngine.Rendering; |
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using UnityEngine.Rendering.PostProcessing; |
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using UnityEngine.XR; |
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namespace UnityEngine.Experimental.Rendering.LightweightPipeline |
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private Vector4[] m_LightAttenuations = new Vector4[kMaxVisibleLights]; |
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private Vector4[] m_LightSpotDirections = new Vector4[kMaxVisibleLights]; |
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private Camera m_CurrCamera = null; |
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private int m_LightIndicesCount = 0; |
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private ComputeBuffer m_LightIndexListBuffer; |
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private static readonly ShaderPassName m_LitPassName = new ShaderPassName("LightweightForward"); |
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private static readonly ShaderPassName m_UnlitPassName = new ShaderPassName("SRPDefaultUnlit"); |
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private RenderTextureFormat m_ColorFormat = RenderTextureFormat.ARGB32; |
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private PostProcessRenderContext m_PostProcessRenderContext; |
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public LightweightPipeline(LightweightPipelineAsset asset) |
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{ |
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m_Asset = asset; |
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m_CameraRTProperty = Shader.PropertyToID("_CameraRT"); |
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m_ShadowMapRTID = new RenderTargetIdentifier(m_ShadowMapProperty); |
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m_CameraRTID = new RenderTargetIdentifier(m_CameraRTProperty); |
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m_PostProcessRenderContext = new PostProcessRenderContext(); |
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// Let engine know we have MSAA on for cases where we support MSAA backbuffer
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if (QualitySettings.antiAliasing != m_Asset.MSAASampleCount) |
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foreach (Camera camera in cameras) |
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{ |
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m_CurrCamera = camera; |
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if (!CullResults.GetCullingParameters(camera, stereoEnabled, out cullingParameters)) |
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if (!CullResults.GetCullingParameters(m_CurrCamera, stereoEnabled, out cullingParameters)) |
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cullingParameters.shadowDistance = Mathf.Min(m_ShadowSettings.maxShadowDistance, camera.farClipPlane); |
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cullingParameters.shadowDistance = Mathf.Min(m_ShadowSettings.maxShadowDistance, m_CurrCamera.farClipPlane); |
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CullResults.Cull(ref cullingParameters, context,ref m_CullResults); |
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VisibleLight[] visibleLights = m_CullResults.visibleLights.ToArray(); |
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lightData.shadowsRendered = RenderShadows(ref m_CullResults, ref visibleLights[lightData.shadowLightIndex], lightData.shadowLightIndex, ref context); |
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// Setup camera matrices and RT
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context.SetupCameraProperties(camera, stereoEnabled); |
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context.SetupCameraProperties(m_CurrCamera, stereoEnabled); |
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// Setup light and shadow shader constants
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SetupShaderLightConstants(visibleLights, ref lightData, ref m_CullResults, ref context); |
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if (!lightData.isSingleDirectionalLight) |
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configuration |= RendererConfiguration.PerObjectLightIndices8; |
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BeginForwardRendering(camera, ref context, stereoEnabled); |
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PostProcessLayer postProcessLayer = GetCurrCameraPostProcessLayer(); |
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bool postProcessEnabled = postProcessLayer != null && postProcessLayer.enabled; |
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m_RenderToIntermediateTarget = postProcessEnabled || GetRenderToIntermediateTarget(); |
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BeginForwardRendering(ref context, stereoEnabled); |
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var litSettings = new DrawRendererSettings(m_CullResults, camera, m_LitPassName); |
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var litSettings = new DrawRendererSettings(m_CullResults, m_CurrCamera, m_LitPassName); |
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var unlitSettings = new DrawRendererSettings(m_CullResults, camera, m_UnlitPassName); |
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var unlitSettings = new DrawRendererSettings(m_CullResults, m_CurrCamera, m_UnlitPassName); |
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unlitSettings.sorting.flags = SortFlags.CommonTransparent; |
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unlitSettings.inputFilter.SetQueuesTransparent(); |
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context.DrawSkybox(camera); |
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context.DrawSkybox(m_CurrCamera); |
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RenderStateBlock renderStateBlock = new RenderStateBlock(); |
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context.DrawRenderers(ref litSettings, renderStateBlock); |
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EndForwardRendering(camera, ref context, stereoEnabled); |
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if (postProcessEnabled) |
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RenderPostProcess(ref context, postProcessLayer); |
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EndForwardRendering(ref context, stereoEnabled, postProcessEnabled); |
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// Release temporary RT
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var discardRT = CommandBufferPool.Get(); |
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discardRT.ReleaseTemporaryRT(m_ShadowMapProperty); |
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return (type == LightType.Directional || type == LightType.Spot); |
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} |
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private void BeginForwardRendering(Camera camera, ref ScriptableRenderContext context, bool stereoEnabled) |
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private void BeginForwardRendering(ref ScriptableRenderContext context, bool stereoEnabled) |
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context.StartMultiEye(camera); |
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m_RenderToIntermediateTarget = GetRenderToIntermediateTarget(camera); |
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context.StartMultiEye(m_CurrCamera); |
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if (camera.activeTexture == null) |
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if (m_CurrCamera.activeTexture == null) |
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{ |
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m_IntermediateTextureArray = false; |
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if (stereoEnabled) |
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xrDesc.colorFormat = RenderTextureFormat.ARGB32; |
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xrDesc.colorFormat = m_ColorFormat; |
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xrDesc.msaaSamples = m_Asset.MSAASampleCount; |
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m_IntermediateTextureArray = (xrDesc.dimension == TextureDimension.Tex2DArray); |
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else |
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{ |
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cmd.GetTemporaryRT(m_CameraRTProperty, Screen.width, Screen.height, kCameraDepthBufferBits, |
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FilterMode.Bilinear, RenderTextureFormat.ARGB32, RenderTextureReadWrite.Default, m_Asset.MSAASampleCount); |
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FilterMode.Bilinear, m_ColorFormat, RenderTextureReadWrite.Default, m_Asset.MSAASampleCount); |
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} |
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if (m_IntermediateTextureArray) |
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} |
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else |
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{ |
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cmd.SetRenderTarget(new RenderTargetIdentifier(camera.activeTexture)); |
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cmd.SetRenderTarget(new RenderTargetIdentifier(m_CurrCamera.activeTexture)); |
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} |
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} |
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else |
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// Clear RenderTarget to avoid tile initialization on mobile GPUs
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// https://community.arm.com/graphics/b/blog/posts/mali-performance-2-how-to-correctly-handle-framebuffers
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if (camera.clearFlags != CameraClearFlags.Nothing) |
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if (m_CurrCamera.clearFlags != CameraClearFlags.Nothing) |
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bool clearDepth = (camera.clearFlags != CameraClearFlags.Nothing); |
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bool clearColor = (camera.clearFlags == CameraClearFlags.Color); |
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cmd.ClearRenderTarget(clearDepth, clearColor, camera.backgroundColor); |
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bool clearDepth = (m_CurrCamera.clearFlags != CameraClearFlags.Nothing); |
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bool clearColor = (m_CurrCamera.clearFlags == CameraClearFlags.Color); |
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cmd.ClearRenderTarget(clearDepth, clearColor, m_CurrCamera.backgroundColor); |
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} |
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context.ExecuteCommandBuffer(cmd); |
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private void EndForwardRendering(Camera camera, ref ScriptableRenderContext context, bool stereoEnabled) |
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private void EndForwardRendering(ref ScriptableRenderContext context, bool stereoEnabled, bool postProcessing) |
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if (m_RenderToIntermediateTarget) |
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if (m_RenderToIntermediateTarget || postProcessing) |
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{ |
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var cmd = CommandBufferPool.Get("Blit"); |
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if (m_IntermediateTextureArray) |
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} |
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else |
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// If PostProcessing is enabled, it is already blitted to CameraTarget.
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else if (!postProcessing) |
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if (camera.cameraType == CameraType.SceneView) |
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cmd.SetRenderTarget(BuiltinRenderTextureType.CameraTarget); |
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cmd.SetRenderTarget(BuiltinRenderTextureType.CameraTarget); |
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context.ExecuteCommandBuffer(cmd); |
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CommandBufferPool.Release(cmd); |
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} |
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context.StopMultiEye(camera); |
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context.StereoEndRender(camera); |
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context.StopMultiEye(m_CurrCamera); |
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context.StereoEndRender(m_CurrCamera); |
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private bool GetRenderToIntermediateTarget(Camera camera) |
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private void RenderPostProcess(ref ScriptableRenderContext renderContext, PostProcessLayer postProcessLayer) |
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bool allowMSAA = camera.allowMSAA && m_Asset.MSAASampleCount > 1 && !PlatformSupportsMSAABackBuffer(); |
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if (camera.cameraType == CameraType.SceneView || allowMSAA || camera.activeTexture != null) |
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var postProcessCommand = CommandBufferPool.Get("Post Processing"); |
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m_PostProcessRenderContext.Reset(); |
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m_PostProcessRenderContext.camera = m_CurrCamera; |
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m_PostProcessRenderContext.source = BuiltinRenderTextureType.CurrentActive; |
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m_PostProcessRenderContext.sourceFormat = m_ColorFormat; |
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m_PostProcessRenderContext.destination = BuiltinRenderTextureType.CameraTarget; |
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m_PostProcessRenderContext.command = postProcessCommand; |
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m_PostProcessRenderContext.flip = true; |
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postProcessLayer.Render(m_PostProcessRenderContext); |
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renderContext.ExecuteCommandBuffer(postProcessCommand); |
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CommandBufferPool.Release(postProcessCommand); |
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} |
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private bool GetRenderToIntermediateTarget() |
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{ |
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bool allowMSAA = m_CurrCamera.allowMSAA && m_Asset.MSAASampleCount > 1 && !PlatformSupportsMSAABackBuffer(); |
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if (m_CurrCamera.cameraType == CameraType.SceneView || allowMSAA || m_CurrCamera.activeTexture != null) |
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} |
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private PostProcessLayer GetCurrCameraPostProcessLayer() |
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{ |
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return m_CurrCamera.GetComponent<PostProcessLayer>(); |
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} |
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private bool PlatformSupportsMSAABackBuffer() |
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Felipe Lira
7 年前