RenderQueue Class Reference

A render queue stores render calls and performs drawing in sorted order. More...

#include <RenderQueue.h>

Inherits IDrawable.

Public Types
typedef std::multimap< std::string, RenderCall >	RenderCallsOpaque
typedef std::multimap< GLfloat, RenderCall >	RenderCallsTransparent

Public Member Functions
	RenderQueue ()
	Constructor. More...
virtual	~RenderQueue ()
	Virtual destructor. More...
virtual void	submitToRenderQueue (GLuint programID, const std::string &materialName, const std::string &drawableName, const std::string &instanceName, DrawablePtr drawable, GLfloat distanceToCamera=0.0, bool isTransparent=false, GLenum blendSfactor=GL_SRC_ALPHA, GLenum blendDfactor=GL_ONE_MINUS_SRC_ALPHA)
	Add a render call to the queue. More...
virtual void	draw (GLenum mode=GL_TRIANGLES) override
	Draw all drawable in the queue in a sorted manner. More...
virtual void	drawInstance (const std::string &instanceName, GLenum mode) override
	Draws an instance of the queue to the screen. More...
virtual void	clear ()
	Remove all render calls. More...
Public Member Functions inherited from IDrawable
virtual	~IDrawable ()
	Virtual destructor. More...

Detailed Description

A render queue stores render calls and performs drawing in sorted order.

Transparent objects are drawn in a back-to-front order whereas opaque objects are arranged in a manner that avoids state changes as much as possible.

Author

Benjamin Buergisser

Member Typedef Documentation

typedef std::multimap< std::string, RenderCall> RenderQueue::RenderCallsOpaque

typedef std::multimap< GLfloat, RenderCall> RenderQueue::RenderCallsTransparent

Constructor & Destructor Documentation

RenderQueue::RenderQueue ( )

inline

Constructor.

virtual RenderQueue::~RenderQueue ( )

inlinevirtual

Virtual destructor.

Member Function Documentation

void RenderQueue::clear ( )

virtual

Remove all render calls.

void RenderQueue::draw ( GLenum  mode = GL_TRIANGLES )

overridevirtual

Draw all drawable in the queue in a sorted manner.

Implements IDrawable.

virtual void RenderQueue::drawInstance ( const std::string &  instanceName, GLenum  mode  )

inlineoverridevirtual

Draws an instance of the queue to the screen.

Parameters

[in]	instanceName
[in]	mode

Implements IDrawable.

void RenderQueue::submitToRenderQueue ( GLuint  programID, const std::string &  materialName, const std::string &  drawableName, const std::string &  instanceName, DrawablePtr  drawable, GLfloat  distanceToCamera = 0.0, bool  isTransparent = false, GLenum  blendSfactor = GL_SRC_ALPHA, GLenum  blendDfactor = GL_ONE_MINUS_SRC_ALPHA  )

virtual

Add a render call to the queue.

Parameters

[in]	programID
[in]	materialName
[in]	drawableName
[in]	instanceName
[in]	drawable
[in]	distanceToCamera	The distance of the transparent drawable to the camera (optional)
[in]	isTransparent	Set true if the object is transparent (optional)
[in]	blendSfactor	Specifies how the red, green, blue, and alpha source blending factors are computed (optional)
[in]	blendDfactor	Specifies how the red, green, blue, and alpha destination blending factors are computed (optional)