OpenGL display window / video viewer. More...

#include <glDisplay.h>

Public Member Functions
	~glDisplay ()
	Destroy window. More...

void	BeginRender (bool userEvents=true)
	Clear window and begin rendering a frame. More...

void	EndRender ()
	Finish rendering and refresh / flip the backbuffer. More...

void	Render (glTexture *texture, float x=5.0f, float y=30.0f)
	Render an OpenGL texture. More...

void	Render (float *image, uint32_t width, uint32_t height, float x=5.0f, float y=30.0f, bool normalize=true)
	Render a CUDA float4 image using OpenGL interop If normalize is true, the image's pixel values will be rescaled from the range of [0-255] to [0-1] If normalize is false, the image's pixel values are assumed to already be in the range of [0-1] Note that if normalization is selected to be performed, it will be done in-place on the image. More...

void	RenderOnce (float *image, uint32_t width, uint32_t height, float x=5.0f, float y=30.0f, bool normalize=true)
	Begin the frame, render one CUDA float4 image using OpenGL interop, and end the frame. More...

void	UserEvents ()
	Process UI events. More...

void	onEvent (uint msg, int a, int b)
	UI event handler. More...

bool	IsOpen () const
	Returns true if the window is open. More...

bool	IsClosed () const
	Returns true if the window has been closed. More...

float	GetFPS () const
	Get the average frame time (in milliseconds). More...

uint32_t	GetWidth () const
	Get the width of the window (in pixels) More...

uint32_t	GetHeight () const
	Get the height of the window (in pixels) More...

void	SetTitle (const char *str)
	Set the window title string. More...

void	SetBackgroundColor (float r, float g, float b, float a)
	Set the background color. More...

Static Public Member Functions
static glDisplay *	Create (float r=0.05f, float g=0.05f, float b=0.05f, float a=1.0f)
	Create a new maximized openGL display window. More...

static glDisplay *	Create (const char *title, float r=0.05f, float g=0.05f, float b=0.05f, float a=1.0f)
	Create a new maximized openGL display window. More...

Static Public Attributes
static const char *	DEFAULT_TITLE
	Default title bar name. More...

Protected Member Functions
	glDisplay ()

bool	initWindow ()

bool	initGL ()

Protected Attributes
Display *	mDisplayX

Screen *	mScreenX

XVisualInfo *	mVisualX

Window	mWindowX

GLXContext	mContextGL

glTexture *	mInteropTex

bool	mWindowClosed

Atom	mWindowClosedMsg

uint32_t	mWidth

uint32_t	mHeight

timespec	mLastTime

float	mAvgTime

float	mBgColor [4]

Static Protected Attributes
static const int	screenIdx = 0

Detailed Description

OpenGL display window / video viewer.

Constructor & Destructor Documentation

◆ ~glDisplay()

glDisplay::~glDisplay ( )

Destroy window.

◆ glDisplay()

glDisplay::glDisplay ( )

protected

Member Function Documentation

◆ BeginRender()

void glDisplay::BeginRender ( bool userEvents = true )

Clear window and begin rendering a frame.

If userEvents is true, UserEvents() will automatically be processed.

◆ Create() [1/2]

static glDisplay* glDisplay::Create	(	float	r = `0.05f`,
		float	g = `0.05f`,
		float	b = `0.05f`,
		float	a = `1.0f`
	)

static

Create a new maximized openGL display window.

Parameters

r	default background RGBA color, red component (0.0-1.0f)
g	default background RGBA color, green component (0.0-1.0f)
b	default background RGBA color, blue component (0.0-1.0f)
a	default background RGBA color, alpha component (0.0-1.0f)

◆ Create() [2/2]

static glDisplay* glDisplay::Create	(	const char *	title,
		float	r = `0.05f`,
		float	g = `0.05f`,
		float	b = `0.05f`,
		float	a = `1.0f`
	)

static

Create a new maximized openGL display window.

Parameters

title	window title bar label string
r	default background RGBA color, red component (0.0-1.0f)
g	default background RGBA color, green component (0.0-1.0f)
b	default background RGBA color, blue component (0.0-1.0f)
a	default background RGBA color, alpha component (0.0-1.0f)

◆ EndRender()

void glDisplay::EndRender ( )

Finish rendering and refresh / flip the backbuffer.

◆ GetFPS()

float glDisplay::GetFPS ( ) const

inline

Get the average frame time (in milliseconds).

◆ GetHeight()

uint32_t glDisplay::GetHeight ( ) const

inline

Get the height of the window (in pixels)

◆ GetWidth()

uint32_t glDisplay::GetWidth ( ) const

inline

Get the width of the window (in pixels)

◆ initGL()

bool glDisplay::initGL ( )

protected

◆ initWindow()

bool glDisplay::initWindow ( )

protected

◆ IsClosed()

bool glDisplay::IsClosed ( ) const

inline

Returns true if the window has been closed.

◆ IsOpen()

bool glDisplay::IsOpen ( ) const

inline

Returns true if the window is open.

◆ onEvent()

void glDisplay::onEvent	(	uint	msg,
		int	a,
		int	b
	)

UI event handler.

◆ Render() [1/2]

void glDisplay::Render	(	glTexture *	texture,
		float	x = `5.0f`,
		float	y = `30.0f`
	)

Render an OpenGL texture.

Note: for more texture rendering methods,

See also: glTexture

◆ Render() [2/2]

void glDisplay::Render	(	float *	image,
		uint32_t	width,
		uint32_t	height,
		float	x = `5.0f`,
		float	y = `30.0f`,
		bool	normalize = `true`
	)

Render a CUDA float4 image using OpenGL interop If normalize is true, the image's pixel values will be rescaled from the range of [0-255] to [0-1] If normalize is false, the image's pixel values are assumed to already be in the range of [0-1] Note that if normalization is selected to be performed, it will be done in-place on the image.

◆ RenderOnce()

void glDisplay::RenderOnce	(	float *	image,
		uint32_t	width,
		uint32_t	height,
		float	x = `5.0f`,
		float	y = `30.0f`,
		bool	normalize = `true`
	)

Begin the frame, render one CUDA float4 image using OpenGL interop, and end the frame.

Note that this function is only useful if you are rendering a single texture per frame. If normalize is true, the image's pixel values will be rescaled from the range of [0-255] to [0-1] If normalize is false, the image's pixel values are assumed to already be in the range of [0-1] Note that if normalization is selected to be performed, it will be done in-place on the image

◆ SetBackgroundColor()

void glDisplay::SetBackgroundColor	(	float	r,
		float	g,
		float	b,
		float	a
	)

inline

Set the background color.

Parameters

r	background RGBA color, red component (0.0-1.0f)
g	background RGBA color, green component (0.0-1.0f)
b	background RGBA color, blue component (0.0-1.0f)
a	background RGBA color, alpha component (0.0-1.0f)

◆ SetTitle()

void glDisplay::SetTitle ( const char * str )

Set the window title string.

◆ UserEvents()

void glDisplay::UserEvents ( )

Process UI events.

Member Data Documentation

◆ DEFAULT_TITLE

const char* glDisplay::DEFAULT_TITLE

static

Default title bar name.

◆ mAvgTime

float glDisplay::mAvgTime

protected

◆ mBgColor

float glDisplay::mBgColor[4]

protected

◆ mContextGL

GLXContext glDisplay::mContextGL

protected

◆ mDisplayX

Display* glDisplay::mDisplayX

protected

◆ mHeight

uint32_t glDisplay::mHeight

protected

◆ mInteropTex

glTexture* glDisplay::mInteropTex

protected

◆ mLastTime

timespec glDisplay::mLastTime

protected

◆ mScreenX

Screen* glDisplay::mScreenX

protected

◆ mVisualX

XVisualInfo* glDisplay::mVisualX

protected

◆ mWidth

uint32_t glDisplay::mWidth

protected

◆ mWindowClosed

bool glDisplay::mWindowClosed

protected

◆ mWindowClosedMsg

Atom glDisplay::mWindowClosedMsg

protected

◆ mWindowX

Window glDisplay::mWindowX

protected

◆ screenIdx

const int glDisplay::screenIdx = 0

staticprotected

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

jetson-utils/glDisplay.h

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Member Functions

Protected Attributes

Static Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ ~glDisplay()

◆ glDisplay()

Member Function Documentation

◆ BeginRender()

◆ Create() [1/2]

◆ Create() [2/2]

◆ EndRender()

◆ GetFPS()

◆ GetHeight()

◆ GetWidth()

◆ initGL()

◆ initWindow()

◆ IsClosed()

◆ IsOpen()

◆ onEvent()

◆ Render() [1/2]

◆ Render() [2/2]

◆ RenderOnce()

◆ SetBackgroundColor()

◆ SetTitle()

◆ UserEvents()

Member Data Documentation

◆ DEFAULT_TITLE

◆ mAvgTime

◆ mBgColor

◆ mContextGL

◆ mDisplayX

◆ mHeight

◆ mInteropTex

◆ mLastTime

◆ mScreenX

◆ mVisualX

◆ mWidth

◆ mWindowClosed

◆ mWindowClosedMsg

◆ mWindowX

◆ screenIdx