Cogs::ClipmapDepthQuery Struct Reference

Public Member Functions
void	initialize (IGraphicsDevice *device, ClipmapRenderer *clipmapRenderer)
void	readBack ()
bool	getPositions (const Vector2 *mousePositions, const Matrix &inverseViewProjection, const size_t numPositions, Vector4 *worldPos, bool *positionValid, int rayPickId)
float	getNearestTerrainSample (const Matrix &inverseProjection)
	Returns the nearest sample in the query readback buffer.
float	getNearestTerrainSample2 (const Matrix &inverseProjection, const Matrix &viewMatrix)
	Returns the nearest sample in the query readback buffer for two frames.

Private Attributes
IGraphicsDevice *	device
BufferHandle	queryReadBackBuffer
ClipmapRenderer *	clipmapRenderer
bool	hasReadBack = false
Vector4	prevViewPos
Matrix	prevViewMatrix

Detailed Description

Definition at line 11 of file ClipmapDepthQuery.h.

Constructor & Destructor Documentation

ClipmapDepthQuery()

Cogs::ClipmapDepthQuery::ClipmapDepthQuery

(

)

Definition at line 14 of file ClipmapDepthQuery.cpp.

~ClipmapDepthQuery()

Cogs::ClipmapDepthQuery::~ClipmapDepthQuery

(

)

Definition at line 31 of file ClipmapDepthQuery.cpp.

Member Function Documentation

getNearestTerrainSample()

float Cogs::ClipmapDepthQuery::getNearestTerrainSample

(

const Matrix &

inverseProjection

)

Returns the nearest sample in the query readback buffer.

Returns

A floating point sample given in view space units, with positive numbers representing increasing distance from the camera.

Definition at line 124 of file ClipmapDepthQuery.cpp.

References Cogs::MapMode::Read.

getNearestTerrainSample2()

float Cogs::ClipmapDepthQuery::getNearestTerrainSample2	(	const Matrix &	inverseProjection,
		const Matrix &	viewMatrix
	)

Returns the nearest sample in the query readback buffer for two frames.

Returns

A floating point sample given in view space units, with positive numbers representing increasing distance from the camera.

Definition at line 187 of file ClipmapDepthQuery.cpp.

References Cogs::MapMode::Read.

getPositions()

bool Cogs::ClipmapDepthQuery::getPositions	(	const Vector2 *	mousePositions,
		const Matrix &	inverseViewProjection,
		const size_t	numPositions,
		Vector4 *	worldPos,
		bool *	positionValid,
		int	rayPickId
	)

Definition at line 56 of file ClipmapDepthQuery.cpp.

initialize()

void Cogs::ClipmapDepthQuery::initialize	(	IGraphicsDevice *	device,
		ClipmapRenderer *	clipmapRenderer
	)

Definition at line 21 of file ClipmapDepthQuery.cpp.

readBack()

void Cogs::ClipmapDepthQuery::readBack

(

)

Definition at line 42 of file ClipmapDepthQuery.cpp.

Member Data Documentation

clipmapRenderer

ClipmapRenderer* Cogs::ClipmapDepthQuery::clipmapRenderer

private

Definition at line 41 of file ClipmapDepthQuery.h.

device

IGraphicsDevice* Cogs::ClipmapDepthQuery::device

private

Definition at line 39 of file ClipmapDepthQuery.h.

hasReadBack

bool Cogs::ClipmapDepthQuery::hasReadBack = false

private

Definition at line 42 of file ClipmapDepthQuery.h.

prevViewMatrix

Matrix Cogs::ClipmapDepthQuery::prevViewMatrix

private

Definition at line 45 of file ClipmapDepthQuery.h.

prevViewPos

Vector4 Cogs::ClipmapDepthQuery::prevViewPos

private

Definition at line 44 of file ClipmapDepthQuery.h.

queryReadBackBuffer

BufferHandle Cogs::ClipmapDepthQuery::queryReadBackBuffer

private

Definition at line 40 of file ClipmapDepthQuery.h.

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The documentation for this struct was generated from the following files:

• Extensions/Terrain/Source/ClipmapDepthQuery.h
• Extensions/Terrain/Source/ClipmapDepthQuery.cpp