Carna::base::Framebuffer Class Reference

Maintains a framebuffer object that supports up to 8 color components simultaneously. More...

#include <Framebuffer.h>

Classes
class	Binding
	Acts like MinimalBinding, but checks the bound framebuffer for validity and allows rendering. More...
class	MinimalBinding
	Maintains the binding of a Framebuffer in a RAII-manner. More...

Public Member Functions
	Framebuffer (unsigned int width, unsigned int height, Texture< 2 > &renderTexture)
	Acquires framebuffer object with depth buffer and attaches renderTexture as the first color attachment. The renderTexture is resized automatically s.t. it matches the size of the framebuffer.
	~Framebuffer ()
	Deletes the maintained framebuffer object and its depth buffer.
bool	hasRenderTexture (unsigned int location) const
	Tells whether a color component exists at location.
const Texture< 2 > &	renderTexture (unsigned int location) const
	References the render texture at location. More...
void	resize (const math::Vector2ui &size)
	Resizes depth buffer and color components to size.
void	resize (unsigned int width, unsigned int height)
unsigned int	width () const
	Returns the framebuffer's width.
unsigned int	height () const
	Returns the framebuffer's height.

Static Public Member Functions
static Texture< 2 > *	createRenderTexture (bool floatingPoint=false)
	Creates render texture. More...
static void	copyDepthAttachment (unsigned int srcId, unsigned int dstId, const Viewport &src, const Viewport &dst)
	Copies data from the depth attachment of the framebuffer identified by srcId to the depth attachment of the framebuffer identified by dstId. Use 0 for one of these arguments to reference the main framebuffer.
static void	copyColorAttachment (unsigned int srcId, unsigned int dstId, const Viewport &src, const Viewport &dst, unsigned int srcColorAttachment, unsigned int dstColorAttachment)
	Copies data from the color attachment srcColorAttachment of the framebuffer identified by srcId to the color attachment dstColorAttachment of the framebuffer identified by dstId. Use 0 for one of these arguments to reference the main framebuffer.
static unsigned int	currentId ()
	Tells the ID of the currently bound framebuffer. This is 0 for the main framebuffer.

Public Attributes
const unsigned int	id
	Identifies the maintained framebuffer object.

Static Public Attributes
static const unsigned int	MAXIMUM_ALLOWED_COLOR_COMPONENTS = 8
	Holds maximum number of simultaneously supported color attachments.

Detailed Description

Maintains a framebuffer object that supports up to 8 color components simultaneously.

An OpenGL framebuffer object typically consists of a depth attachment and an ordered set of color attachments. The depth attachment can be realized either by a depth buffer (faster, read-only) or by a depth texture. Color attachments are always textures. We call them render textures here.

Author

Leonid Kostrykin

Date

9.3.2011 - 25.3.15

Definition at line 49 of file Framebuffer.h.

Member Function Documentation

createRenderTexture()

static Texture< 2 >* Carna::base::Framebuffer::createRenderTexture ( bool  floatingPoint = false )

static

Creates render texture.

Parameters

floatingPoint

sets whether float-based pixels shall be used instead of unsigned byte.

renderTexture()

const Texture< 2 >& Carna::base::Framebuffer::renderTexture

(

unsigned int

location

)

const

References the render texture at location.

Precondition

hasRenderTexture(location) == true

resize()

void Carna::base::Framebuffer::resize	(	unsigned int	width,
		unsigned int	height
	)

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

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

• include/Carna/base/Framebuffer.h