Varying Class Reference

Varying class. More...

#include <Varying.h>

Inheritance diagram for Varying:

List of all members.

Public Types
typedef SafePtr< Varying >	Ptr
	Safe pointer.
typedef SafePtr< const Varying >	PtrConst
	Safe pointer.
Public Member Functions
	Varying (ShaderProgram &program, ShaderOutput &output, std::string name)
virtual const std::string &	getClassName () const
	Get name of this class.
template<typename T >
Buffer< T >::PtrConst	getBuffer ()
	Get buffer.
const GLSLType &	getGLSLType () const
	Get GLSL type.
std::string	getName () const
	Get shader variable name.
bool	prepare (unsigned int index, unsigned int primitiveCount, size_t *unitSize=0)
	Prepare varying.
virtual bool	handleSignal (unsigned int signalID, const ObjectBase *callerPtr)
	Handle incoming signal.

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Detailed Description

Varying class.

Varyings are output variables for GLSL vertex and geometry shader programs. In newer GLSL versions varying keyword was replaced by output keyword, but functionality is the same. Varyings are used to pass data between subsequent shader stages.

It is possible to record values in varying before they enter fragment shader stage with transform feedback. This class, therefore, seves as interface to access recorded values in application. Recorded values are originaly stored in buffer in graphics card memory.

If a geometry shader stage is present, only output variables of geometry shader can be recorded. If only vertex shader stage is present, recording of output variable is considered as valid usage of that variable and shader program can be run.

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Member Function Documentation

template<typename T >

UNISHADER_BEGIN Buffer< T >::PtrConst Varying::getBuffer

(

)

Get buffer.

Returns:

Buffer.

const GLSLType& Varying::getGLSLType

(

)

const

Get GLSL type.

Returns:

GLSL type.

std::string Varying::getName

(

)

const

Get shader variable name.

Returns:

Shader variable name.

virtual bool Varying::handleSignal	(	unsigned int	signalID,
		const ObjectBase *	callerPtr
	)		[virtual]

Handle incoming signal.

Parameters:

signalID	Signal identifier.
callerPtr	Pointer to object sending signal.

Returns:

True if handled.

Implements SignalReceiver.

bool Varying::prepare	(	unsigned int	index,
		unsigned int	primitiveCount,
		size_t *	unitSize = 0
	)

Prepare varying.

Retrieve info about varying from shader program and prepare varying for use.

Returns:

True if prepared successfully.

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

• D:/Visual Studio 2010/Projects/Unishader project/Unishader/include/UniShader/Varying.h
• D:/Visual Studio 2010/Projects/Unishader project/Unishader/include/UniShader/Varying.inl