Static Public Member Functions
static void	draw (GLSL::Program *_prog=0)
	Draw the screen quad. More...

static void	drawInstanced (int _count, GLSL::Program *_prog=0)
	Draw the screen quad with instancing. More...

static void	drawTexture2D (GLuint _texture, const Vec2f &_offset=Vec2f(0.0f, 0.0f), const Vec2f &_size=Vec2f(1.0f, 1.0f))
	Draw a 2D texture to screen. More...

Private Member Functions
	ScreenQuad ()
	Default constructor.

void	init ()
	Initialize vbo and format.

void	intDraw (GLSL::Program *_prog, int _numInstances=0)
	Internal draw function.

Static Private Member Functions
static ScreenQuad &	instance ()
	Get singleton instance.

Private Attributes
GLuint	vbo_
	vbo containing the quad in projected coordinates

VertexDeclaration *	decl_
	vertex format of screen quad (float2 pos)

GLSL::Program *	texDrawProg_
	Simple texture drawing shader.

Detailed Description

This class provides a simple method to draw a screen-aligned quad.

Definition at line 81 of file ScreenQuad.hh.

Member Function Documentation

void ACG::ScreenQuad::draw ( GLSL::Program * _prog = 0 )

static

Draw the screen quad.

The quad is in projected space with coordinates in [-1, 1].

Parameters

_prog GLSL shader to bind attribute id's if needed. Pass null-pointer for fixed function rendering

Definition at line 147 of file ScreenQuad.cc.

void ACG::ScreenQuad::drawInstanced	(	int	_count,
		GLSL::Program *	_prog = `0`
	)

static

Draw the screen quad with instancing.

Can be used for render to 2D-array / 3D volume The quad is in projected space with coordinates in [-1, 1].

Parameters

_count	number of instances
_prog	GLSL shader to bind attribute id's if needed. Pass null-pointer for fixed function rendering

Definition at line 159 of file ScreenQuad.cc.

void ACG::ScreenQuad::drawTexture2D	(	GLuint	_texture,
		const Vec2f &	_offset = `Vec2f(0.0f, 0.0f)`,
		const Vec2f &	_size = `Vec2f(1.0f, 1.0f)`
	)

static

Draw a 2D texture to screen.

Useful for debugging, copying a texture..

Parameters

_texture	Texture that should be bound when drawing the quad
_offset	Offset passed to the uniform called offset in the shader
_size	Size passed to the uniform called size in the shader

Definition at line 206 of file ScreenQuad.cc.

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