SoGLMultiTextureImageElement Class Reference
Element Classes

The SoGLMultiTextureImageElement class is used to control the current GL texture for texture units. More...

`#include <Inventor/elements/SoGLMultiTextureImageElement.h>`

Inheritance diagram for SoGLMultiTextureImageElement:

## Classes

class | GLUnitData

## Public Member Functions

virtual void | init (SoState *state)
virtual void | push (SoState *state)
virtual void | pop (SoState *state, const SoElement *prevTopElement)
Public Member Functions inherited from SoMultiTextureImageElement
virtual SbBool | matches (const SoElement *elem) const
SoElement * | copyMatchInfo (void) const
virtual void | setElt (const int unit, const SbUniqueId nodeid, const SbVec2s &size, const int numComponents, const unsigned char *bytes, const Wrap wrapS, const Wrap wrapT, const Model model, const SbColor &blendColor)
| FIXME: write doc.
virtual void | setElt (const int unit, const SbUniqueId nodeid, const SbVec3s &size, const int numComponents, const unsigned char *bytes, const Wrap wrapS, const Wrap wrapT, const Wrap wrapR, const Model model, const SbColor &blendColor)
Public Member Functions inherited from SoElement
const SoType | getTypeId (void) const
int | getStackIndex (void) const
void | setDepth (const int depth)
int | getDepth (void) const
virtual void | print (FILE *file=stdout) const
virtual | ~SoElement ()

## Static Public Member Functions

static SoType | getClassTypeId (void)
static int | getClassStackIndex (void)
static void * | createInstance (void)
static void | initClass (void)
static void | set (SoState *const state, SoNode *const node, const int unit, SoGLImage *image, const Model model, const SbColor &blendColor)
static void | restore (SoState *state, const int unit)
static SoGLImage * | get (SoState *state, const int unit, Model &model, SbColor &blendcolor)
static SbBool | hasTransparency (SoState *state)
static void | set (SoState *const state, SoNode *const node, SoGLImage *image, const Model model, const SbColor &blendColor)
static SoGLImage * | get (SoState *state, Model &model, SbColor &blendcolor)
static int32_t | getMaxGLTextureSize (void)
Static Public Member Functions inherited from SoMultiTextureImageElement
static SoType | getClassTypeId (void)
static int | getClassStackIndex (void)
static void * | createInstance (void)
static void | initClass (void)
static void | setDefault (SoState *const state, SoNode *const node, const int unit=0)
static void | set (SoState *const state, SoNode *const node, const int unit, const SbVec2s &size, const int numComponents, const unsigned char *bytes, const Wrap wrapS, const Wrap wrapT, const Model model, const SbColor &blendColor)
| FIXME: write doc.
static void | set (SoState *const state, SoNode *const node, const int unit, const SbVec3s &size, const int numComponents, const unsigned char *bytes, const Wrap wrapS, const Wrap wrapT, const Wrap wrapR, const Model model, const SbColor &blendColor)
static const unsigned char * | get (SoState *const state, const int unit, SbVec2s &size, int &numComponents, Wrap &wrapS, Wrap &wrapT, Model &model, SbColor &blendColor)
| FIXME: write doc.
static const unsigned char * | get (SoState *const state, const int unit, SbVec3s &size, int &numComponents, Wrap &wrapS, Wrap &wrapT, Wrap &wrapR, Model &model, SbColor &blendColor)
static const unsigned char * | getImage (SoState *const state, const int unit, SbVec2s &size, int &numComponents)
static const unsigned char * | getImage (SoState *const state, const int unit, SbVec3s &size, int &numComponents)
static const SbColor & | getBlendColor (SoState *const state, const int unit=0)
static Model | getModel (SoState *const state, const int unit=0)
static Wrap | getWrapS (SoState *const state, const int unit=0)
static Wrap | getWrapT (SoState *const state, const int unit=0)
static Wrap | getWrapR (SoState *const state, const int unit=0)
static SbBool | containsTransparency (SoState *const state)
| FIXME: write doc.
static const unsigned char * | getDefault (SbVec2s &size, int &numComponents)
| FIXME: write doc.
static const unsigned char * | getDefault (SbVec3s &size, int &numComponents)
static void | set (SoState *const state, SoNode *const node, const SbVec2s &size, const int numComponents, const unsigned char *bytes, const int wrapS, const int wrapT, const int model, const SbColor &blendColor)
static void | set (SoState *const state, SoNode *const node, const SbVec2s &size, const int numComponents, const unsigned char *bytes, const Wrap wrapS, const Wrap wrapT, const Model model, const SbColor &blendColor)
static void | set (SoState *const state, SoNode *const node, const SbVec3s &size, const int numComponents, const unsigned char *bytes, const int wrapS, const int wrapT, const int wrapR, const int model, const SbColor &blendColor)
static void | set (SoState *const state, SoNode *const node, const SbVec3s &size, const int numComponents, const unsigned char *bytes, const Wrap wrapS, const Wrap wrapT, const Wrap wrapR, const Model model, const SbColor &blendColor)
static const unsigned char * | get (SoState *const state, SbVec2s &size, int &numComponents, Wrap &wrapS, Wrap &wrapT, Model &model, SbColor &blendColor)
static const unsigned char * | get (SoState *const state, SbVec3s &size, int &numComponents, Wrap &wrapS, Wrap &wrapT, Wrap &wrapR, Model &model, SbColor &blendColor)
static const unsigned char * | get (SoState *const state, SbVec2s &size, int &numComponents, int &wrapS, int &wrapT, int &model, SbColor &blendColor)
static const unsigned char * | get (SoState *const state, SbVec3s &size, int &numComponents, int &wrapS, int &wrapT, int &wrapR, int &model, SbColor &blendColor)
static const unsigned char * | getImage (SoState *const state, SbVec2s &size, int &numComponents)
static const unsigned char * | getImage (SoState *const state, SbVec3s &size, int &numComponents)
Static Public Member Functions inherited from SoElement
static void | initClass (void)
static SoType | getClassTypeId (void)
static int | getClassStackIndex (void)
static void | initElements (void)
static int | getNumStackIndices (void)
static SoType | getIdFromStackIndex (const int stackIndex)

## Protected Member Functions

| SoGLMultiTextureImageElement (void)
virtual | ~SoGLMultiTextureImageElement ()
virtual SbBool | hasTransparency (const int unit=0) const
Protected Member Functions inherited from SoMultiTextureImageElement
virtual | ~SoMultiTextureImageElement ()
const UnitData & | getUnitData (const int unit) const
int | getNumUnits () const
Protected Member Functions inherited from SoElement
| SoElement (void)
void | capture (SoState *const state) const
virtual void | captureThis (SoState *state) const
void | setTypeId (const SoType typeId)
void | setStackIndex (const int index)
SoElement * | getNextInStack (void) const
SoElement * | getNextFree (void) const

## Additional Inherited Members

Public Types inherited from SoMultiTextureImageElement
enum | Model { BLEND = 0x0be2 , MODULATE = 0x2100 , DECAL = 0x2101 , REPLACE = 0x1E01 }
enum | Wrap { CLAMP = 0x2900 , REPEAT = 0x2901 , CLAMP_TO_BORDER = 0x812D }
Static Protected Member Functions inherited from SoElement
static SoElement * | getElement (SoState *const state, const int stackIndex)
static const SoElement * | getConstElement (SoState *const state, const int stackIndex)
static int | createStackIndex (const SoType id)
Protected Attributes inherited from SoElement
SoType | typeId
int | stackIndex
int | depth
Static Protected Attributes inherited from SoElement
static int | classStackIndex
static SoTypeList * | stackToType

## Detailed Description

The SoGLMultiTextureImageElement class is used to control the current GL texture for texture units.

FIXME: write doc.

## Constructor & Destructor Documentation

## SoGLMultiTextureImageElement()

SoGLMultiTextureImageElement::SoGLMultiTextureImageElement | ( | void |  | ) |

protected

Constructor.

## ~SoGLMultiTextureImageElement()

SoGLMultiTextureImageElement::~SoGLMultiTextureImageElement | ( | void |  | ) |

protected virtual

Destructor.

## Member Function Documentation

## getClassTypeId()

SoType SoGLMultiTextureImageElement::getClassTypeId | ( | void |  | ) |

static

This static method returns the SoType object associated with objects of this class.

## getClassStackIndex()

int SoGLMultiTextureImageElement::getClassStackIndex | ( | void |  | ) |

static

This static method returns the state stack index for the class.

## createInstance()

void * SoGLMultiTextureImageElement::createInstance | ( | void |  | ) |

static

This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
Creates a new instance of the class type corresponding to the SoType object.

## initClass()

void SoGLMultiTextureImageElement::initClass | ( | void |  | ) |

static

Initialize relevant common data for all instances, like the type system.

## init()

void SoGLMultiTextureImageElement::init | ( | SoState * | state | ) |

virtual

Initializes the element to its default value.

Reimplemented from SoMultiTextureImageElement.

## push()

void SoGLMultiTextureImageElement::push | ( | SoState * | state | ) |

virtual

This method is called every time a new element is required in one of the stacks. This happens when a writable element is requested, using SoState::getElement() or indirectly SoElement::getElement(), and the depth of the current element is less than the state depth.

Override this method if your element needs to copy data from the previous top of stack. The push() method is called on the new element, and the previous element can be found using SoElement::getNextInStack().

Reimplemented from SoMultiTextureImageElement.

## pop()

void SoGLMultiTextureImageElement::pop | ( | SoState * | state,
|  | const SoElement * | prevTopElement )

virtual

This method is called when the state is popped, and the depth of the element is bigger than the current state depth. pop() is called on the new top of stack, and a pointer to the previous top of stack is passed in prevTopElement.

Override this method if you need to copy some state information from the previous top of stack.

Reimplemented from SoElement.

## set()

void SoGLMultiTextureImageElement::set | ( | SoState *const | state,
|  | SoNode *const | node,
|  | const int | unit,
|  | SoGLImage * | image,
|  | const Model | model,
|  | const SbColor & | blendColor )

static

Sets the current texture. Id didapply is TRUE, it is assumed that the texture image already is the current GL texture. Do not use this feature unless you know what you're doing.

## hasTransparency() [1/2]

SbBool SoGLMultiTextureImageElement::hasTransparency | ( | SoState * | state | ) |

static

Returns TRUE if any of the images have at least one transparent pixel.

Since
  Coin 3.1

## hasTransparency() [2/2]

SbBool SoGLMultiTextureImageElement::hasTransparency | ( | const int | unit = 0 | ) | const

protected virtual

Called by containsTransparency(). Returns TRUE if image data has transparency. Default method does a very poor job of detecting this, since it returns TRUE when the number of components are 2 or

1. Override whenever it is important to know this (SoGLTextureImageElement overrides it to avoid transparency handling where possible).

Reimplemented from SoMultiTextureImageElement.

## getMaxGLTextureSize()

int32_t SoGLMultiTextureImageElement::getMaxGLTextureSize | ( | void |  | ) |

static

The size returned by this function will just be a very coarse estimate as it only uses the more or less obsoleted technique of calling glGetIntegerv(GL_MAX_TEXTURE_SIZE).

For a better estimate, use SoGLTextureImageElement::isTextureSizeLegal().

Note that this function needs an OpenGL context to be made current for it to work. Without that, you will most likely get a faulty return value or even a crash.

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

- SoGLMultiTextureImageElement.h
- SoGLMultiTextureImageElement.cpp