#include "PostProcess/PostProcessMotionBlur.h"
#include "StaticBoundShaderState.h"
#include "CanvasTypes.h"
#include "DataDrivenShaderPlatformInfo.h"
#include "Engine/Engine.h"
#include "ScenePrivate.h"
#include "SpriteIndexBuffer.h"
#include "PostProcess/PostProcessing.h"
#include "VelocityRendering.h"
#include "UnrealEngine.h"
#include "PixelShaderUtils.h"

Classes
class	FMotionBlurShader

class	FMotionBlurVelocityFlattenCS

class	FMotionBlurVelocityDilateGatherCS

class	FMotionBlurVelocityDilateScatterVS

class	FMotionBlurVelocityDilateScatterPS

class	FMotionBlurFilterTileClassifyCS

class	FSetupMotionBlurFilterCS

class	FMotionBlurFilterCS

class	FMotionBlurVisualizePS

struct	FMotionBlurViewports

Enumerations
enum class	EMotionBlurVelocityScatterPass : uint32 { DrawMin , DrawMax , MAX }

enum class	EMotionBlurFilterPass : uint32 { Separable0 , Separable1 , Unified , MAX }

Functions
bool	IsMotionBlurEnabled (const FViewInfo &View)

bool	IsVisualizeMotionBlurEnabled (const FViewInfo &View)

bool	IsMotionBlurScatterRequired (const FViewInfo &View, const FScreenPassTextureViewport &SceneViewport)

FIntPoint	GetMotionBlurTileCount (FIntPoint SizeInPixels)

bool	DoesMotionBlurNeedsHalfResInput ()

EMotionBlurQuality	GetMotionBlurQuality ()

EMotionBlurFilter	GetMotionBlurFilter ()

int32	GetMotionBlurDirections ()

FRHISamplerState *	GetMotionBlurColorSampler ()

FRHISamplerState *	GetMotionBlurVelocitySampler ()

FRHISamplerState *	GetPostMotionBlurTranslucencySampler (bool bUpscale)

FRDGTextureUAVRef	CreateDebugUAV (FRDGBuilder &GraphBuilder, const FIntPoint &Extent, const TCHAR *DebugName)

FRDGTextureRef	CreateVelocityTileTexture (FRDGBuilder &GraphBuilder, FIntPoint VelocityTileCount, int32 BlurDirections, const TCHAR *DebugName, bool ScatterDilatation=false)

FVecocityTileTextureSRVs	CreateVelocityTileTextureSRVs (FRDGBuilder &GraphBuilder, FRDGTextureRef VecocityTileArray)

	IMPLEMENT_GLOBAL_SHADER (FMotionBlurVelocityFlattenCS, "/Engine/Private/MotionBlur/MotionBlurVelocityFlatten.usf", "MainCS", SF_Compute)

	IMPLEMENT_GLOBAL_SHADER (FMotionBlurVelocityDilateGatherCS, "/Engine/Private/MotionBlur/MotionBlurTileGather.usf", "MainCS", SF_Compute)

	IMPLEMENT_GLOBAL_SHADER (FMotionBlurVelocityDilateScatterVS, "/Engine/Private/MotionBlur/MotionBlurTileScatter.usf", "MainVS", SF_Vertex)

	IMPLEMENT_GLOBAL_SHADER (FMotionBlurVelocityDilateScatterPS, "/Engine/Private/MotionBlur/MotionBlurTileScatter.usf", "MainPS", SF_Pixel)

	IMPLEMENT_GLOBAL_SHADER (FMotionBlurFilterTileClassifyCS, "/Engine/Private/MotionBlur/MotionBlurFilterTileClassify.usf", "MainCS", SF_Compute)

	IMPLEMENT_GLOBAL_SHADER (FSetupMotionBlurFilterCS, "/Engine/Private/MotionBlur/MotionBlurFilterTileClassify.usf", "MainCS", SF_Compute)

	IMPLEMENT_GLOBAL_SHADER (FMotionBlurFilterCS, "/Engine/Private/MotionBlur/MotionBlurApply.usf", "MainCS", SF_Compute)

	IMPLEMENT_GLOBAL_SHADER (FMotionBlurVisualizePS, "/Engine/Private/MotionBlur/MotionBlurVisualize.usf", "MainPS", SF_Pixel)

FVelocityFlattenParameters	GetVelocityFlattenParameters (const FViewInfo &View)

void	AddMotionBlurVelocityPass (FRDGBuilder &GraphBuilder, const FViewInfo &View, const FMotionBlurViewports &Viewports, const FMotionBlurInputs &Inputs, FRDGTextureRef VelocityFlatTextureOutput, FVecocityTileTextureSRVs VelocityTileTexturesOutput)

FMotionBlurOutputs	AddMotionBlurFilterPass (FRDGBuilder &GraphBuilder, const FViewInfo &View, const FMotionBlurInputs &Inputs, const FMotionBlurViewports &Viewports, FRDGTextureSRVRef ColorTexture, FRDGTextureRef VelocityFlatTexture, FVecocityTileTextureSRVs VelocityTileTextures, FRDGTextureRef PostMotionBlurTranslucency, const FIntPoint &PostMotionBlurTranslucencySize, EMotionBlurFilterPass MotionBlurFilterPass, EMotionBlurQuality MotionBlurQuality)

FScreenPassTextureSlice	AddVisualizeMotionBlurPass (FRDGBuilder &GraphBuilder, const FViewInfo &View, const FMotionBlurInputs &Inputs)

FMotionBlurOutputs	AddMotionBlurPass (FRDGBuilder &GraphBuilder, const FViewInfo &View, const FMotionBlurInputs &Inputs)

Variables
const int32	kMotionBlurFlattenTileSize = FVelocityFlattenTextures::kTileSize

const int32	kMotionBlurFilterTileSize = 16

const int32	kMotionBlurComputeTileSizeX = 8

const int32	kMotionBlurComputeTileSizeY = 8

TGlobalResource< FSpriteIndexBuffer< 8 > >	GScatterQuadIndexBuffer

Enumeration Type Documentation

◆ EMotionBlurFilterPass

enum class EMotionBlurFilterPass : uint32

strong

Enumerator
Separable0
Separable1
Unified
MAX

◆ EMotionBlurVelocityScatterPass

enum class EMotionBlurVelocityScatterPass : uint32

strong

Enumerator
DrawMin
DrawMax
MAX

Function Documentation

◆ AddMotionBlurFilterPass()

FMotionBlurOutputs AddMotionBlurFilterPass	(	FRDGBuilder &	GraphBuilder,
		const FViewInfo &	View,
		const FMotionBlurInputs &	Inputs,
		const FMotionBlurViewports &	Viewports,
		FRDGTextureSRVRef	ColorTexture,
		FRDGTextureRef	VelocityFlatTexture,
		FVecocityTileTextureSRVs	VelocityTileTextures,
		FRDGTextureRef	PostMotionBlurTranslucency,
		const FIntPoint &	PostMotionBlurTranslucencySize,
		EMotionBlurFilterPass	MotionBlurFilterPass,
		EMotionBlurQuality	MotionBlurQuality
	)

◆ AddMotionBlurPass()

FMotionBlurOutputs AddMotionBlurPass	(	FRDGBuilder &	GraphBuilder,
		const FViewInfo &	View,
		const FMotionBlurInputs &	Inputs
	)

◆ AddMotionBlurVelocityPass()

void AddMotionBlurVelocityPass	(	FRDGBuilder &	GraphBuilder,
		const FViewInfo &	View,
		const FMotionBlurViewports &	Viewports,
		const FMotionBlurInputs &	Inputs,
		FRDGTextureRef *	VelocityFlatTextureOutput,
		FVecocityTileTextureSRVs *	VelocityTileTexturesOutput
	)

◆ AddVisualizeMotionBlurPass()

FScreenPassTextureSlice AddVisualizeMotionBlurPass	(	FRDGBuilder &	GraphBuilder,
		const FViewInfo &	View,
		const FMotionBlurInputs &	Inputs
	)

If the override texture is used, check whether the output texture supports SRVs before assigning it, as this causes a crash in FScreenPassTextureSlice::CreateFromScreenPassTexture at the end of this function if not.

The OverrideOutput texture did not support SRVs, so we created one that did, but we still need to resolve the output image back to the OverrideOutput texture too.

◆ CreateDebugUAV()

FRDGTextureUAVRef CreateDebugUAV	(	FRDGBuilder &	GraphBuilder,
		const FIntPoint &	Extent,
		const TCHAR *	DebugName
	)

◆ CreateVelocityTileTexture()

FRDGTextureRef CreateVelocityTileTexture	(	FRDGBuilder &	GraphBuilder,
		FIntPoint	VelocityTileCount,
		int32	BlurDirections,
		const TCHAR *	DebugName,
		bool	ScatterDilatation = `false`
	)

◆ CreateVelocityTileTextureSRVs()

FVecocityTileTextureSRVs CreateVelocityTileTextureSRVs	(	FRDGBuilder &	GraphBuilder,
		FRDGTextureRef	VecocityTileArray
	)

◆ DoesMotionBlurNeedsHalfResInput()

bool DoesMotionBlurNeedsHalfResInput ( )

◆ GetMotionBlurColorSampler()

FRHISamplerState * GetMotionBlurColorSampler ( )

◆ GetMotionBlurDirections()

int32 GetMotionBlurDirections ( )

◆ GetMotionBlurFilter()

EMotionBlurFilter GetMotionBlurFilter ( )

◆ GetMotionBlurQuality()

EMotionBlurQuality GetMotionBlurQuality ( )

◆ GetMotionBlurTileCount()

FIntPoint GetMotionBlurTileCount ( FIntPoint SizeInPixels )

◆ GetMotionBlurVelocitySampler()

FRHISamplerState * GetMotionBlurVelocitySampler ( )

◆ GetPostMotionBlurTranslucencySampler()

FRHISamplerState * GetPostMotionBlurTranslucencySampler ( bool bUpscale )

◆ GetVelocityFlattenParameters()

FVelocityFlattenParameters GetVelocityFlattenParameters ( const FViewInfo & View )

◆ IMPLEMENT_GLOBAL_SHADER() [1/8]

IMPLEMENT_GLOBAL_SHADER	(	FMotionBlurFilterCS	,
		"/Engine/Private/MotionBlur/MotionBlurApply.usf"	,
		"MainCS"	,
		SF_Compute
	)

◆ IMPLEMENT_GLOBAL_SHADER() [2/8]

IMPLEMENT_GLOBAL_SHADER	(	FMotionBlurFilterTileClassifyCS	,
		"/Engine/Private/MotionBlur/MotionBlurFilterTileClassify.usf"	,
		"MainCS"	,
		SF_Compute
	)

◆ IMPLEMENT_GLOBAL_SHADER() [3/8]

IMPLEMENT_GLOBAL_SHADER	(	FMotionBlurVelocityDilateGatherCS	,
		"/Engine/Private/MotionBlur/MotionBlurTileGather.usf"	,
		"MainCS"	,
		SF_Compute
	)

◆ IMPLEMENT_GLOBAL_SHADER() [4/8]

IMPLEMENT_GLOBAL_SHADER	(	FMotionBlurVelocityDilateScatterPS	,
		"/Engine/Private/MotionBlur/MotionBlurTileScatter.usf"	,
		"MainPS"	,
		SF_Pixel
	)

◆ IMPLEMENT_GLOBAL_SHADER() [5/8]

IMPLEMENT_GLOBAL_SHADER	(	FMotionBlurVelocityDilateScatterVS	,
		"/Engine/Private/MotionBlur/MotionBlurTileScatter.usf"	,
		"MainVS"	,
		SF_Vertex
	)

◆ IMPLEMENT_GLOBAL_SHADER() [6/8]

IMPLEMENT_GLOBAL_SHADER	(	FMotionBlurVelocityFlattenCS	,
		"/Engine/Private/MotionBlur/MotionBlurVelocityFlatten.usf"	,
		"MainCS"	,
		SF_Compute
	)

◆ IMPLEMENT_GLOBAL_SHADER() [7/8]

IMPLEMENT_GLOBAL_SHADER	(	FMotionBlurVisualizePS	,
		"/Engine/Private/MotionBlur/MotionBlurVisualize.usf"	,
		"MainPS"	,
		SF_Pixel
	)

◆ IMPLEMENT_GLOBAL_SHADER() [8/8]

IMPLEMENT_GLOBAL_SHADER	(	FSetupMotionBlurFilterCS	,
		"/Engine/Private/MotionBlur/MotionBlurFilterTileClassify.usf"	,
		"MainCS"	,
		SF_Compute
	)

◆ IsMotionBlurEnabled()

bool IsMotionBlurEnabled ( const FViewInfo & View )

◆ IsMotionBlurScatterRequired()

bool IsMotionBlurScatterRequired	(	const FViewInfo &	View,
		const FScreenPassTextureViewport &	SceneViewport
	)

◆ IsVisualizeMotionBlurEnabled()

bool IsVisualizeMotionBlurEnabled ( const FViewInfo & View )

Variable Documentation

◆ GScatterQuadIndexBuffer

TGlobalResource<FSpriteIndexBuffer<8> > GScatterQuadIndexBuffer

◆ kMotionBlurComputeTileSizeX

const int32 kMotionBlurComputeTileSizeX = 8

◆ kMotionBlurComputeTileSizeY

const int32 kMotionBlurComputeTileSizeY = 8

◆ kMotionBlurFilterTileSize

const int32 kMotionBlurFilterTileSize = 16

◆ kMotionBlurFlattenTileSize

const int32 kMotionBlurFlattenTileSize = FVelocityFlattenTextures::kTileSize

Classes

Enumerations

Functions

Variables