protected override void Render(ScriptableRenderContext context, Camera[] cameras)
{
BeginFrameRendering(context, cameras);
foreach (Camera camera in cameras)
{
BeginCameraRendering(context, camera);
//Culling
ScriptableCullingParameters cullingParams;
if (!camera.TryGetCullingParameters(out cullingParams))
{
continue;
}
CullingResults cull = context.Cull(ref cullingParams);
//Camera setup some builtin variables e.g. camera projection matrices etc
context.SetupCameraProperties(camera);
//Get the setting from camera component
bool drawSkyBox = camera.clearFlags == CameraClearFlags.Skybox? true : false;
bool clearDepth = camera.clearFlags == CameraClearFlags.Nothing? false : true;
bool clearColor = camera.clearFlags == CameraClearFlags.Color? true : false;
//************************** Set TempRT ************************************
CommandBuffer cmdTempId = new CommandBuffer();
cmdTempId.name = "(" + camera.name + ")" + "Setup TempRT";
//Color
m_ColorFormatActive = camera.allowHDR ? m_ColorFormatHDR : m_ColorFormat;
RenderTextureDescriptor colorRTDesc = new RenderTextureDescriptor(camera.pixelWidth, camera.pixelHeight);
colorRTDesc.graphicsFormat = m_ColorFormatActive;
colorRTDesc.depthBufferBits = depthBufferBits;
colorRTDesc.sRGB = (QualitySettings.activeColorSpace == ColorSpace.Linear);
colorRTDesc.msaaSamples = camera.allowMSAA ? QualitySettings.antiAliasing : 1;
colorRTDesc.enableRandomWrite = false;
cmdTempId.GetTemporaryRT(m_ColorRTid, colorRTDesc, FilterMode.Bilinear);
//Depth
RenderTextureDescriptor depthRTDesc = new RenderTextureDescriptor(camera.pixelWidth, camera.pixelHeight);
depthRTDesc.colorFormat = RenderTextureFormat.Depth;
depthRTDesc.depthBufferBits = depthBufferBits;
cmdTempId.GetTemporaryRT(m_DepthRTid, depthRTDesc, FilterMode.Bilinear);
context.ExecuteCommandBuffer(cmdTempId);
cmdTempId.Release();
//************************** Setup DrawSettings and FilterSettings ************************************
var sortingSettings = new SortingSettings(camera);
DrawingSettings drawSettings = new DrawingSettings(m_PassName, sortingSettings);
FilteringSettings filterSettings = new FilteringSettings(RenderQueueRange.all);
DrawingSettings drawSettingsDepth = new DrawingSettings(m_PassName, sortingSettings)
{
perObjectData = PerObjectData.None,
overrideMaterial = depthOnlyMaterial,
overrideMaterialPassIndex = 0
};
//************************** Rendering depth ************************************
//Set RenderTarget & Camera clear flag
CommandBuffer cmdDepth = new CommandBuffer();
cmdDepth.name = "(" + camera.name + ")" + "Depth Clear Flag";
cmdDepth.SetRenderTarget(m_DepthRT); //Set CameraTarget to the depth texture
cmdDepth.ClearRenderTarget(true, true, Color.black);
//MyDebug(camera,context,m_DepthRT,colorRTDesc,null);
context.ExecuteCommandBuffer(cmdDepth);
//MyDebug(camera,context,m_DepthRT,colorRTDesc,null);
cmdDepth.Release();
//Opaque objects
sortingSettings.criteria = SortingCriteria.CommonOpaque;
drawSettingsDepth.sortingSettings = sortingSettings;
filterSettings.renderQueueRange = RenderQueueRange.opaque;
context.DrawRenderers(cull, ref drawSettingsDepth, ref filterSettings);
//To let shader has _CameraDepthTexture, to make Depth of Field work
CommandBuffer cmdDepthTexture = new CommandBuffer();
cmdDepthTexture.name = "(" + camera.name + ")" + "Depth Texture";
cmdDepthTexture.SetGlobalTexture(m_DepthRTid, m_DepthRT);
context.ExecuteCommandBuffer(cmdDepthTexture);
//MyDebug(camera,context,m_DepthRT,colorRTDesc,null);
cmdDepthTexture.Release();
//************************** Rendering colors ************************************
//Set RenderTarget & Camera clear flag
CommandBuffer cmd = new CommandBuffer();
cmd.name = "(" + camera.name + ")" + "Clear Flag";
cmd.SetRenderTarget(m_ColorRT); //Set CameraTarget to the color texture
cmd.ClearRenderTarget(clearDepth, clearColor, camera.backgroundColor);
context.ExecuteCommandBuffer(cmd);
//MyDebug(camera,context,m_ColorRT,colorRTDesc,null);
cmd.Release();
//Skybox
if (drawSkyBox)
{
context.DrawSkybox(camera);
}
AfterSkybox(camera, context);
//************************** Rendering Opaque Objects ************************************
sortingSettings.criteria = SortingCriteria.CommonOpaque;
drawSettings.sortingSettings = sortingSettings;
filterSettings.renderQueueRange = RenderQueueRange.opaque;
context.DrawRenderers(cull, ref drawSettings, ref filterSettings);
AfterOpaqueObject(camera, context);
//************************** SetUp Post-processing ************************************
PostProcessLayer m_CameraPostProcessLayer = camera.GetComponent <PostProcessLayer>();
bool hasPostProcessing = m_CameraPostProcessLayer != null;
bool usePostProcessing = false;
bool hasOpaqueOnlyEffects = false;
PostProcessRenderContext m_PostProcessRenderContext = null;
if (hasPostProcessing)
{
m_PostProcessRenderContext = new PostProcessRenderContext();
usePostProcessing = m_CameraPostProcessLayer.enabled;
hasOpaqueOnlyEffects = m_CameraPostProcessLayer.HasOpaqueOnlyEffects(m_PostProcessRenderContext);
}
//************************** Opaque Post-processing ************************************
//Ambient Occlusion, Screen-spaced reflection are generally not supported for SRP
//So this part is only for custom opaque post-processing
if (usePostProcessing)
{
CommandBuffer cmdpp = new CommandBuffer();
cmdpp.name = "(" + camera.name + ")" + "Post-processing Opaque";
m_PostProcessRenderContext.Reset();
m_PostProcessRenderContext.camera = camera;
m_PostProcessRenderContext.source = m_ColorRT;
m_PostProcessRenderContext.sourceFormat = UnityEngine.Experimental.Rendering.GraphicsFormatUtility.GetRenderTextureFormat(m_ColorFormatActive);
m_PostProcessRenderContext.destination = m_ColorRT;
m_PostProcessRenderContext.command = cmdpp;
m_PostProcessRenderContext.flip = camera.targetTexture == null;//是否反转画面
m_CameraPostProcessLayer.RenderOpaqueOnly(m_PostProcessRenderContext);
context.ExecuteCommandBuffer(cmdpp);
cmdpp.Release();
}
//************************** Rendering Transparent Objects ************************************
sortingSettings.criteria = SortingCriteria.CommonTransparent;
drawSettings.sortingSettings = sortingSettings;
filterSettings.renderQueueRange = RenderQueueRange.transparent;
context.DrawRenderers(cull, ref drawSettings, ref filterSettings);
AfterTransparentObject(camera, context, m_DepthRTid, depthRTDesc);
//************************** Transparent Post-processing ************************************
//Bloom, Vignette, Grain, ColorGrading, LensDistortion, Chromatic Aberration, Auto Exposure
if (usePostProcessing)
{
CommandBuffer cmdpp = new CommandBuffer();
cmdpp.name = "(" + camera.name + ")" + "Post-processing Transparent";
m_PostProcessRenderContext.Reset();
m_PostProcessRenderContext.camera = camera;
m_PostProcessRenderContext.source = m_ColorRT;
m_PostProcessRenderContext.sourceFormat = UnityEngine.Experimental.Rendering.GraphicsFormatUtility.GetRenderTextureFormat(m_ColorFormatActive);
m_PostProcessRenderContext.destination = BuiltinRenderTextureType.CameraTarget;
m_PostProcessRenderContext.command = cmdpp;
m_PostProcessRenderContext.flip = camera.targetTexture == null;
m_CameraPostProcessLayer.Render(m_PostProcessRenderContext);
context.ExecuteCommandBuffer(cmdpp);
cmdpp.Release();
}
//************************** Make sure screen has the thing when Postprocessing is off ************************************
if (!usePostProcessing)
{
CommandBuffer cmdBlitToCam = new CommandBuffer();
cmdBlitToCam.name = "(" + camera.name + ")" + "Blit back to Camera";
cmdBlitToCam.Blit(m_ColorRTid, BuiltinRenderTextureType.CameraTarget);
//MDebug.MyDebug();
context.ExecuteCommandBuffer(cmdBlitToCam);
cmdBlitToCam.Release();
}
//************************** Clean Up ************************************
CommandBuffer cmdclean = new CommandBuffer();
cmdclean.name = "(" + camera.name + ")" + "Clean Up";
cmdclean.ReleaseTemporaryRT(m_ColorRTid);
cmdclean.ReleaseTemporaryRT(m_DepthRTid);
context.ExecuteCommandBuffer(cmdclean);
cmdclean.Release();
context.Submit();
EndCameraRendering(context, camera);
}
EndFrameRendering(context, cameras);
}
public FrameRenderingConfiguration SetupFrameRenderingConfiguration(CameraContext cameraContext, ShadowManager shadowManager)
{
var configuration = (cameraContext.StereoEnabled) ? FrameRenderingConfiguration.Stereo : FrameRenderingConfiguration.None;
if (cameraContext.StereoEnabled && XRSettings.eyeTextureDesc.dimension == TextureDimension.Tex2DArray)
{
m_IntermediateTextureArray = true;
}
else
{
m_IntermediateTextureArray = false;
}
var camera = cameraContext.Camera;
bool hdrEnabled = m_Asset.SupportsHDR && camera.allowHDR;
bool intermediateTexture = camera.targetTexture != null || camera.cameraType == CameraType.SceneView ||
m_Asset.RenderScale < 1.0f || hdrEnabled;
m_ColorFormat = hdrEnabled ? RenderTextureFormat.DefaultHDR : RenderTextureFormat.Default;
m_RequireCopyColor = false;
m_DepthRenderBuffer = false;
m_CameraPostProcessLayer = camera.GetComponent <PostProcessLayer>();
bool msaaEnabled = camera.allowMSAA && m_Asset.MSAASampleCount > 1 && (camera.targetTexture == null || camera.targetTexture.antiAliasing > 1);
// TODO: PostProcessing and SoftParticles are currently not support for VR
bool postProcessEnabled = m_CameraPostProcessLayer != null && m_CameraPostProcessLayer.enabled && !cameraContext.StereoEnabled;
m_RequireDepthTexture = m_Asset.RequireDepthTexture && !cameraContext.StereoEnabled;
if (postProcessEnabled)
{
m_RequireDepthTexture = true;
intermediateTexture = true;
configuration |= FrameRenderingConfiguration.PostProcess;
if (m_CameraPostProcessLayer.HasOpaqueOnlyEffects(m_PostProcessRenderContext))
{
configuration |= FrameRenderingConfiguration.BeforeTransparentPostProcess;
if (m_CameraPostProcessLayer.sortedBundles[PostProcessEvent.BeforeTransparent].Count == 1)
{
m_RequireCopyColor = true;
}
}
}
if (cameraContext.SceneViewCamera)
{
m_RequireDepthTexture = true;
}
if (shadowManager.Shadows)
{
m_RequireDepthTexture = shadowManager.IsScreenSpace;
if (!msaaEnabled)
{
intermediateTexture = true;
}
}
if (msaaEnabled)
{
configuration |= FrameRenderingConfiguration.Msaa;
intermediateTexture = intermediateTexture || !LightweightUtils.PlatformSupportsMSAABackBuffer();
}
if (m_RequireDepthTexture)
{
// If msaa is enabled we don't use a depth renderbuffer as we might not have support to Texture2DMS to resolve depth.
// Instead we use a depth prepass and whenever depth is needed we use the 1 sample depth from prepass.
// Screen space shadows require depth before opaque shading.
if (!msaaEnabled && !shadowManager.Shadows)
{
bool supportsDepthCopy = m_CopyTextureSupport != CopyTextureSupport.None && m_Asset.CopyDepthShader.isSupported;
m_DepthRenderBuffer = true;
intermediateTexture = true;
// If requiring a camera depth texture we need separate depth as it reads/write to depth at same time
// Post process doesn't need the copy
if (!m_Asset.RequireDepthTexture && postProcessEnabled)
{
configuration |= (supportsDepthCopy) ? FrameRenderingConfiguration.DepthCopy : FrameRenderingConfiguration.DepthPrePass;
}
}
else
{
configuration |= FrameRenderingConfiguration.DepthPrePass;
}
}
Rect cameraRect = camera.rect;
if (!(Math.Abs(cameraRect.x) > 0.0f || Math.Abs(cameraRect.y) > 0.0f || Math.Abs(cameraRect.width) < 1.0f || Math.Abs(cameraRect.height) < 1.0f))
{
configuration |= FrameRenderingConfiguration.DefaultViewport;
}
else
{
intermediateTexture = true;
}
if (intermediateTexture)
{
configuration |= FrameRenderingConfiguration.IntermediateTexture;
}
return(configuration);
}