OpenInventor Scenes can be rendered to the OffscreenRender who outputs an MLImage. More...

#include <mlOffscreenRender.h>

Inheritance diagram for ml::OffscreenRenderer:

Public Types
enum	ImageType { IMG_RGB = 0 , IMG_RGBA , IMG_RGBA_FLOAT , NUM_IMAGE_TYPES }
	Macro for declaring methods for the runtime system, defined in mlRuntimeSubClass.h. More...

enum	TransparencyType { SCREEN_DOOR = SoGLRenderAction::SCREEN_DOOR , ADD = SoGLRenderAction::ADD , DELAYED_ADD = SoGLRenderAction::DELAYED_ADD , SORTED_OBJECT_ADD = SoGLRenderAction::SORTED_OBJECT_ADD , BLEND = SoGLRenderAction::BLEND , DELAYED_BLEND = SoGLRenderAction::DELAYED_BLEND , SORTED_OBJECT_BLEND = SoGLRenderAction::SORTED_OBJECT_BLEND , NUM_TRANSPARENCY_TYPES }

enum	BufferType { AUTO , PIXEL_BUFFER , NUM_BUFFER_TYPES }

Public Member Functions
	OffscreenRenderer (ImageType imgType=IMG_RGB, const Vector2 &size=Vector2(64., 64.), int numInputImages=0, int numOutputImages=1)
	Constructor.

	~OffscreenRenderer () override
	Destructor:

void	handleNotification (Field *) override
	Called when input changes.

void	calculateOutputImageProperties (int outputIndex, PagedImage *outputImage) override
	Determine properties of output image.

void	calculateOutputSubImage (SubImage outSubImg, int outIndex, SubImage inSubImgs) override
	Called when a page is calculated.

void	activateAttachments () override
	Initialize buffer type.

void *	takeMemoryImage ()
	Returns the current memory image and creates a new one. The ownership is passed to the caller.

Static Public Attributes
static const char *	ImageTypeStrings [NUM_IMAGE_TYPES]
	Define strings for all image types. These can be used for enum fields.

static const char *	TransparencyTypeStrings [NUM_TRANSPARENCY_TYPES]
	Define strings for all transparency types. These can be used for enum fields.

static const char *	BufferTypeStrings [NUM_BUFFER_TYPES]
	Define strings for all image types. These can be used for enum fields.

Protected Member Functions
void	_setMode ()
	Sets the mode of the pixel buffer according to _curImgType.

bool	_createOffscreenBuffer ()

bool	_createPBuffer (const SbVec2s &)
	Creates the pixel buffer.

bool	_createFBO (const SbVec2s &)
	Creates the FBO.

void	_resetOffscreenBuffer ()

bool	_activateOffscreenBuffer ()

void	_deactivateOffscreenBuffer ()

bool	_renderToOutImage (bool &hasSceneAndUpdatedBuffer)
	Render the scene and write it to a main memory buffer. Returns true on success, false otherwise.

bool	_render (bool &hasSceneAndUpdatedBuffer)
	Calls _renderToOutImage().

void	_updateBufferType ()

Protected Attributes
BoolField *	_supportedFld
	Field variables.

SoNodeField *	_sceneGraphFld
	Root node of scene graph to be rendered offscreen.

EnumField *	_imageTypeFld
	Specifies the image type of the output image.

EnumField *	_transparencyTypeFld
	Specifies the image type of the output image.

EnumField *	_bufferTypeFld
	Specifies the buffer type.

Vector2Field *	_sizeFld
	Size of the output image.

FloatField *	_pixelScaleFld
	Scale factor for pixel size.

ColorField *	_bgColorFld
	Background color.

BoolField *	_createStencilBufferFld
	Specifies whether to create a stencil buffer.

NotifyField *	_updateFld
	Triggers update.

BoolField *	_enableMultiSampling
	Enables multi sampling.

IntField *	_multiSampling
	Sets number of samples.

bool	_bufferUpToDate
	Member variables.

bool	_useFBO

SoGLRenderAction *	_glRenderAction
	The GL render action needed to traverse the scene attached to this module.

SoRef< SoOffscreenViewerProxyNode >	_root
	SoSeparator node to use as root of the scene, so that the render state is reset after each rendering.

SoOffscreenViewerProxy *	_offscreenProxy
	Proxy node that can be queried during traversal.

SoPBuffer *	_pBuffer
	The pBuffer object.

int	_mode
	The mode of the pBuffer.

ImageType	_curImgType
	The image type of the pBuffer. This is not necessarily identical to the value of _imageTypeFld!

SoGLFramebufferObject *	_fbo
	The frame buffer object, is used instead of the pBuffer if available.

SoGLTexture *	_colorTextureBuffer
	Pointer to the color buffer.

SoGLRenderbuffer *	_depthRenderBuffer
	Pointer to the depth buffer.

bool	_frameBufferCompletionTested
	Flag that indicates that the current color/depth/stencil buffer configuration has been checked and works.

GLuint	_depthComponent
	The depth component actually used. May differ from requested, cause gfx card does not support it.

GLenum	_colorFormat

SoGLFramebufferObject *	_msaaFbo

SoGLRenderbuffer *	_msaaColorBuffer

unsigned char *	_memImage
	Pointer to memory allocated to hold the content of the offscreen buffer.

unsigned int	_memImgBytes
	Number of bytes of the `_memImage`.

bool	_fboSupportsNonPowerOfTwoDimensions

bool	_pBufferSupportsNonPowerOfTwoDimensions

Detailed Description

OpenInventor Scenes can be rendered to the OffscreenRender who outputs an MLImage.

Definition at line 42 of file mlOffscreenRender.h.

Member Enumeration Documentation

◆ BufferType

enum ml::OffscreenRenderer::BufferType

Enumerator
AUTO
PIXEL_BUFFER
NUM_BUFFER_TYPES

Definition at line 69 of file mlOffscreenRender.h.

◆ ImageType

enum ml::OffscreenRenderer::ImageType

Macro for declaring methods for the runtime system, defined in mlRuntimeSubClass.h.

Image types

Enumerator
IMG_RGB
IMG_RGBA
IMG_RGBA_FLOAT
NUM_IMAGE_TYPES

Definition at line 50 of file mlOffscreenRender.h.

◆ TransparencyType

enum ml::OffscreenRenderer::TransparencyType

Enumerator
SCREEN_DOOR
ADD
DELAYED_ADD
SORTED_OBJECT_ADD
BLEND
DELAYED_BLEND
SORTED_OBJECT_BLEND
NUM_TRANSPARENCY_TYPES

Definition at line 58 of file mlOffscreenRender.h.

Constructor & Destructor Documentation

◆ OffscreenRenderer()

ml::OffscreenRenderer::OffscreenRenderer	(	ImageType	imgType = IMG_RGB,
		const Vector2 &	size = Vector2(64., 64.),
		int	numInputImages = 0,
		int	numOutputImages = 1 )

Constructor.

◆ ~OffscreenRenderer()

ml::OffscreenRenderer::~OffscreenRenderer ( )

override

Destructor:

Member Function Documentation

◆ _activateOffscreenBuffer()

bool ml::OffscreenRenderer::_activateOffscreenBuffer ( )

protected

◆ _createFBO()

bool ml::OffscreenRenderer::_createFBO ( const SbVec2s & )

protected

Creates the FBO.

◆ _createOffscreenBuffer()

bool ml::OffscreenRenderer::_createOffscreenBuffer ( )

protected

◆ _createPBuffer()

bool ml::OffscreenRenderer::_createPBuffer ( const SbVec2s & )

protected

Creates the pixel buffer.

◆ _deactivateOffscreenBuffer()

void ml::OffscreenRenderer::_deactivateOffscreenBuffer ( )

protected

◆ _render()

bool ml::OffscreenRenderer::_render ( bool & hasSceneAndUpdatedBuffer )

protected

Calls _renderToOutImage().

If _renderToOutImage() fails, the buffer settings are changed (power of two buffer size, pbuffer instead of fbo) and _renderToOutImage() is tried again.

◆ _renderToOutImage()

bool ml::OffscreenRenderer::_renderToOutImage ( bool & hasSceneAndUpdatedBuffer )

protected

Render the scene and write it to a main memory buffer. Returns true on success, false otherwise.

◆ _resetOffscreenBuffer()

void ml::OffscreenRenderer::_resetOffscreenBuffer ( )

protected

◆ _setMode()

void ml::OffscreenRenderer::_setMode ( )

protected

Sets the mode of the pixel buffer according to _curImgType.

◆ _updateBufferType()

void ml::OffscreenRenderer::_updateBufferType ( )

protected

◆ activateAttachments()

void ml::OffscreenRenderer::activateAttachments ( )

override

Initialize buffer type.

◆ calculateOutputImageProperties()

void ml::OffscreenRenderer::calculateOutputImageProperties	(	int	outputIndex,
		PagedImage *	outputImage )

override

Determine properties of output image.

◆ calculateOutputSubImage()

void ml::OffscreenRenderer::calculateOutputSubImage	(	SubImage *	outSubImg,
		int	outIndex,
		SubImage *	inSubImgs )

override

Called when a page is calculated.

◆ handleNotification()

void ml::OffscreenRenderer::handleNotification ( Field * )

override

Called when input changes.

◆ takeMemoryImage()

void * ml::OffscreenRenderer::takeMemoryImage ( )

Returns the current memory image and creates a new one. The ownership is passed to the caller.

Member Data Documentation

◆ _bgColorFld

ColorField* ml::OffscreenRenderer::_bgColorFld

protected

Background color.

Definition at line 126 of file mlOffscreenRender.h.

◆ _bufferTypeFld

EnumField* ml::OffscreenRenderer::_bufferTypeFld

protected

Specifies the buffer type.

Definition at line 118 of file mlOffscreenRender.h.

◆ _bufferUpToDate

bool ml::OffscreenRenderer::_bufferUpToDate

protected

Member variables.

Definition at line 140 of file mlOffscreenRender.h.

◆ _colorFormat

GLenum ml::OffscreenRenderer::_colorFormat

protected

Definition at line 170 of file mlOffscreenRender.h.

◆ _colorTextureBuffer

SoGLTexture* ml::OffscreenRenderer::_colorTextureBuffer

protected

Pointer to the color buffer.

Definition at line 163 of file mlOffscreenRender.h.

◆ _createStencilBufferFld

BoolField* ml::OffscreenRenderer::_createStencilBufferFld

protected

Specifies whether to create a stencil buffer.

Definition at line 128 of file mlOffscreenRender.h.

◆ _curImgType

ImageType ml::OffscreenRenderer::_curImgType

protected

The image type of the pBuffer. This is not necessarily identical to the value of _imageTypeFld!

Definition at line 158 of file mlOffscreenRender.h.

◆ _depthComponent

GLuint ml::OffscreenRenderer::_depthComponent

protected

The depth component actually used. May differ from requested, cause gfx card does not support it.

Definition at line 169 of file mlOffscreenRender.h.

◆ _depthRenderBuffer

SoGLRenderbuffer* ml::OffscreenRenderer::_depthRenderBuffer

protected

Pointer to the depth buffer.

Definition at line 165 of file mlOffscreenRender.h.

◆ _enableMultiSampling

BoolField* ml::OffscreenRenderer::_enableMultiSampling

protected

Enables multi sampling.

Definition at line 132 of file mlOffscreenRender.h.

◆ _fbo

SoGLFramebufferObject* ml::OffscreenRenderer::_fbo

protected

The frame buffer object, is used instead of the pBuffer if available.

Definition at line 161 of file mlOffscreenRender.h.

◆ _fboSupportsNonPowerOfTwoDimensions

bool ml::OffscreenRenderer::_fboSupportsNonPowerOfTwoDimensions

protected

Definition at line 180 of file mlOffscreenRender.h.

◆ _frameBufferCompletionTested

bool ml::OffscreenRenderer::_frameBufferCompletionTested

protected

Flag that indicates that the current color/depth/stencil buffer configuration has been checked and works.

Definition at line 167 of file mlOffscreenRender.h.

◆ _glRenderAction

SoGLRenderAction* ml::OffscreenRenderer::_glRenderAction

protected

The GL render action needed to traverse the scene attached to this module.

Definition at line 144 of file mlOffscreenRender.h.

◆ _imageTypeFld

EnumField* ml::OffscreenRenderer::_imageTypeFld

protected

Specifies the image type of the output image.

Definition at line 114 of file mlOffscreenRender.h.

◆ _memImage

unsigned char* ml::OffscreenRenderer::_memImage

protected

Pointer to memory allocated to hold the content of the offscreen buffer.

Definition at line 176 of file mlOffscreenRender.h.

◆ _memImgBytes

unsigned int ml::OffscreenRenderer::_memImgBytes

protected

Number of bytes of the _memImage.

Definition at line 178 of file mlOffscreenRender.h.

◆ _mode

int ml::OffscreenRenderer::_mode

protected

The mode of the pBuffer.

Definition at line 156 of file mlOffscreenRender.h.

◆ _msaaColorBuffer

SoGLRenderbuffer* ml::OffscreenRenderer::_msaaColorBuffer

protected

Definition at line 173 of file mlOffscreenRender.h.

◆ _msaaFbo

SoGLFramebufferObject* ml::OffscreenRenderer::_msaaFbo

protected

Definition at line 172 of file mlOffscreenRender.h.

◆ _multiSampling

IntField* ml::OffscreenRenderer::_multiSampling

protected

Sets number of samples.

Definition at line 134 of file mlOffscreenRender.h.

◆ _offscreenProxy

SoOffscreenViewerProxy* ml::OffscreenRenderer::_offscreenProxy

protected

Proxy node that can be queried during traversal.

Definition at line 151 of file mlOffscreenRender.h.

◆ _pBuffer

SoPBuffer* ml::OffscreenRenderer::_pBuffer

protected

The pBuffer object.

Definition at line 154 of file mlOffscreenRender.h.

◆ _pBufferSupportsNonPowerOfTwoDimensions

bool ml::OffscreenRenderer::_pBufferSupportsNonPowerOfTwoDimensions

protected

Definition at line 181 of file mlOffscreenRender.h.

◆ _root

SoRef<SoOffscreenViewerProxyNode> ml::OffscreenRenderer::_root

protected

SoSeparator node to use as root of the scene, so that the render state is reset after each rendering.

Definition at line 148 of file mlOffscreenRender.h.

◆ _sceneGraphFld

SoNodeField* ml::OffscreenRenderer::_sceneGraphFld

protected

Root node of scene graph to be rendered offscreen.

Definition at line 112 of file mlOffscreenRender.h.

◆ _sizeFld

Vector2Field* ml::OffscreenRenderer::_sizeFld

protected

Size of the output image.

Definition at line 121 of file mlOffscreenRender.h.

◆ _supportedFld

BoolField* ml::OffscreenRenderer::_supportedFld

protected

Field variables.

A boolean that tells if the offscreen renderer is supported on the current system

Definition at line 110 of file mlOffscreenRender.h.

◆ _transparencyTypeFld

EnumField* ml::OffscreenRenderer::_transparencyTypeFld

protected

Specifies the image type of the output image.

Definition at line 116 of file mlOffscreenRender.h.

◆ _updateFld

NotifyField* ml::OffscreenRenderer::_updateFld

protected

Triggers update.

Definition at line 130 of file mlOffscreenRender.h.

◆ _useFBO

bool ml::OffscreenRenderer::_useFBO

protected

Definition at line 141 of file mlOffscreenRender.h.

◆ BufferTypeStrings

const char* ml::OffscreenRenderer::BufferTypeStrings[NUM_BUFFER_TYPES]

static

Define strings for all image types. These can be used for enum fields.

Definition at line 82 of file mlOffscreenRender.h.

◆ ImageTypeStrings

const char* ml::OffscreenRenderer::ImageTypeStrings[NUM_IMAGE_TYPES]

static

Define strings for all image types. These can be used for enum fields.

Definition at line 76 of file mlOffscreenRender.h.

◆ TransparencyTypeStrings

const char* ml::OffscreenRenderer::TransparencyTypeStrings[NUM_TRANSPARENCY_TYPES]

static

Define strings for all transparency types. These can be used for enum fields.

Definition at line 79 of file mlOffscreenRender.h.

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

MeVisLab/Standard/Sources/ML/MLOffscreenRender/mlOffscreenRender.h

Public Types

Public Member Functions

Static Public Attributes

Protected Member Functions

Protected Attributes

Detailed Description

Member Enumeration Documentation

◆ BufferType

◆ ImageType

◆ TransparencyType

Constructor & Destructor Documentation

◆ OffscreenRenderer()

◆ ~OffscreenRenderer()

Member Function Documentation

◆ _activateOffscreenBuffer()

◆ _createFBO()

◆ _createOffscreenBuffer()

◆ _createPBuffer()

◆ _deactivateOffscreenBuffer()

◆ _render()

◆ _renderToOutImage()

◆ _resetOffscreenBuffer()

◆ _setMode()

◆ _updateBufferType()

◆ activateAttachments()

◆ calculateOutputImageProperties()

◆ calculateOutputSubImage()

◆ handleNotification()

◆ takeMemoryImage()

Member Data Documentation

◆ _bgColorFld

◆ _bufferTypeFld

◆ _bufferUpToDate

◆ _colorFormat

◆ _colorTextureBuffer

◆ _createStencilBufferFld

◆ _curImgType

◆ _depthComponent

◆ _depthRenderBuffer

◆ _enableMultiSampling

◆ _fbo

◆ _fboSupportsNonPowerOfTwoDimensions

◆ _frameBufferCompletionTested

◆ _glRenderAction

◆ _imageTypeFld

◆ _memImage

◆ _memImgBytes

◆ _mode

◆ _msaaColorBuffer

◆ _msaaFbo

◆ _multiSampling

◆ _offscreenProxy

◆ _pBuffer

◆ _pBufferSupportsNonPowerOfTwoDimensions

◆ _root

◆ _sceneGraphFld

◆ _sizeFld

◆ _supportedFld

◆ _transparencyTypeFld

◆ _updateFld

◆ _useFBO

◆ BufferTypeStrings

◆ ImageTypeStrings

◆ TransparencyTypeStrings