LandscapeEditReadback.cpp File Reference

#include "LandscapeEditReadback.h"
#include "Engine/Texture2D.h"
#include "LandscapePrivate.h"
#include "RenderingThread.h"
#include "RenderUtils.h"
#include "Hash/CityHashHelpers.h"

Classes
struct	FLandscapeEditReadbackTaskImpl
class	FLandscapeEditReadbackTaskPool

Namespaces
namespace	UE
namespace	UE::Landscape
namespace	UE::Landscape::Private

Functions
void	InitTask_GameThread (FLandscapeEditReadbackTaskImpl &Task, UTexture2D const *InTexture, FLandscapeEditLayerReadback::FReadbackContext &&InReadbackContext, uint32 InFrameId)
bool	InitTask_RenderThread (FRHICommandListImmediate &RHICmdList, FLandscapeEditReadbackTaskImpl &Task)
void	KickTask_RenderThread (FRHICommandListImmediate &RHICmdList, FLandscapeEditReadbackTaskImpl &Task)
bool	UpdateTask_RenderThread (FRHICommandListImmediate &RHICmdList, FLandscapeEditReadbackTaskImpl &Task, bool bFlush)

Function Documentation

InitTask_GameThread()

void InitTask_GameThread	(	FLandscapeEditReadbackTaskImpl &	Task,
		UTexture2D const *	InTexture,
		FLandscapeEditLayerReadback::FReadbackContext &&	InReadbackContext,
		uint32	InFrameId
	)

Initialize the read back task data that is written by game thread.

InitTask_RenderThread()

bool InitTask_RenderThread	(	FRHICommandListImmediate &	RHICmdList,
		FLandscapeEditReadbackTaskImpl &	Task
	)

Initialize the read back task resources.

KickTask_RenderThread()

void KickTask_RenderThread	(	FRHICommandListImmediate &	RHICmdList,
		FLandscapeEditReadbackTaskImpl &	Task
	)

Kick the GPU work for the read back task.

UpdateTask_RenderThread()

bool UpdateTask_RenderThread	(	FRHICommandListImmediate &	RHICmdList,
		FLandscapeEditReadbackTaskImpl &	Task,
		bool	bFlush
	)

Update the read back task on the render thread. Check if the GPU work is complete and if it is copy the data.

Returns

true if the task's state is Complete, false if it is still Pending :