GLArrayData (JOGL API -- JSR-231 2.2 Specification)

```
public interface GLArrayData
```
The total number of bytes hold by the referenced buffer is: getComponentSize()* getComponentNumber() * getElementNumber()

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`associate(Object obj, boolean enable)` Implementation and type dependent object association.
`void`	`destroy(GL gl)`
`Buffer`	`getBuffer()` The Buffer holding the data, may be null if a GPU buffer without client bound data
`int`	`getComponentCount()` The number of components per element
`int`	`getComponentSizeInBytes()` The component's size in bytes
`int`	`getComponentType()` The component's GL data type, ie.
`int`	`getElementCount()` The current number of used elements.
`int`	`getIndex()` The index of the predefined array index, see list below, or -1 in case of a shader attribute array.
`int`	`getLocation()` Returns the shader attribute location for this name, -1 if not yet determined
`String`	`getName()` The name of the reflecting shader array attribute.
`boolean`	`getNormalized()` True, if GL shall normalize fixed point data while converting them into float.
`int`	`getSizeInBytes()` The currently used size in bytes. In case the buffer's position is 0 (sealed, flipped), it's based on it's limit instead of it's position.
`int`	`getStride()`
`int`	`getVBOName()` The VBO name or 0 if not a VBO
`long`	`getVBOOffset()` The VBO buffer offset or 0 if not a VBO
`int`	`getVBOTarget()` The VBO target or 0 if not a VBO
`int`	`getVBOUsage()` The VBO usage or 0 if not a VBO
`boolean`	`isVBO()` Determines whether the data is server side (VBO) and enabled, or a client side array (false).
`boolean`	`isVertexAttribute()` Returns true if this data set is intended for a GLSL vertex shader attribute, otherwise false, ie intended for fixed function vertex pointer
`int`	`setLocation(GL2ES2 gl, int program)` Retrieves the location of the shader attribute from the linked shader program.
`int`	`setLocation(GL2ES2 gl, int program, int location)` Binds the location of the shader attribute to the given location for the unlinked shader program.
`int`	`setLocation(int v)` Sets the given location of the shader attribute
`void`	`setName(String newName)` Set a new name for this array.
`String`	`toString()`

- Method Detail
  - associate
```
void associate(Object obj,
             boolean enable)
```
    Implementation and type dependent object association.
    One currently known use case is to associate a ShaderState to an GLSL aware vertex attribute object, allowing to use the ShaderState to handle it's data persistence, location and state change.
    This is implicitly done via shaderState.ownAttribute(GLArrayData, boolean).
    
    Parameters:
    obj - implementation and type dependent association
    enable - pass true to enable the association and false to disable it.
  - isVertexAttribute
```
boolean isVertexAttribute()
```
    Returns true if this data set is intended for a GLSL vertex shader attribute, otherwise false, ie intended for fixed function vertex pointer
  - getIndex
```
int getIndex()
```
    The index of the predefined array index, see list below, or -1 in case of a shader attribute array.
    
    See Also:
    GLPointerFunc.GL_VERTEX_ARRAY, GLPointerFunc.GL_NORMAL_ARRAY, GLPointerFunc.GL_COLOR_ARRAY, GLPointerFunc.GL_TEXTURE_COORD_ARRAY
  - getName
```
String getName()
```
    The name of the reflecting shader array attribute.
  - setName
```
void setName(String newName)
```
    Set a new name for this array.
    This clears the location, i.e. sets it to -1.
    
    See Also:
    setLocation(int), setLocation(GL2ES2, int)
  - getLocation
```
int getLocation()
```
    Returns the shader attribute location for this name, -1 if not yet determined
  - setLocation
```
int setLocation(int v)
```
    Sets the given location of the shader attribute
    
    Returns:
    the given location
    See Also:
    ShaderState.vertexAttribPointer(GL2ES2, GLArrayData)
  - setLocation
```
int setLocation(GL2ES2 gl,
              int program)
```
    Retrieves the location of the shader attribute from the linked shader program.
    No validation is performed within the implementation.
    
    Parameters:
    gl -
    program -
    
    Returns:
    ≥0 denotes a valid attribute location as found and used in the given shader program. <0 denotes an invalid location, i.e. not found or used in the given shader program.
  - setLocation
```
int setLocation(GL2ES2 gl,
              int program,
              int location)
```
    Binds the location of the shader attribute to the given location for the unlinked shader program.
    No validation is performed within the implementation.
    
    Parameters:
    gl -
    program -
    
    Returns:
    the given location
  - isVBO
```
boolean isVBO()
```
    Determines whether the data is server side (VBO) and enabled, or a client side array (false).
  - getVBOOffset
```
long getVBOOffset()
```
    The VBO buffer offset or 0 if not a VBO
  - getVBOName
```
int getVBOName()
```
    The VBO name or 0 if not a VBO
  - getVBOUsage
```
int getVBOUsage()
```
    The VBO usage or 0 if not a VBO
    
    Returns:
    0 if not a GPU buffer, otherwise GL2ES2.GL_STREAM_DRAW, GL.GL_STATIC_DRAW or GL.GL_DYNAMIC_DRAW
  - getVBOTarget
```
int getVBOTarget()
```
    The VBO target or 0 if not a VBO
    
    Returns:
    0 if not a GPU buffer, otherwise GL.GL_ARRAY_BUFFER or GL.GL_ELEMENT_ARRAY_BUFFER
  - getBuffer
```
Buffer getBuffer()
```
    The Buffer holding the data, may be null if a GPU buffer without client bound data
  - getComponentCount
```
int getComponentCount()
```
    The number of components per element
  - getComponentType
```
int getComponentType()
```
    The component's GL data type, ie. GL_FLOAT
  - getComponentSizeInBytes
```
int getComponentSizeInBytes()
```
    The component's size in bytes
  - getElementCount
```
int getElementCount()
```
    The current number of used elements.
    On element consist out of getComponentCount() components.
    In case the buffer's position is 0 (sealed, flipped), it's based on it's limit instead of it's position.
  - getSizeInBytes
```
int getSizeInBytes()
```
    The currently used size in bytes.
    In case the buffer's position is 0 (sealed, flipped), it's based on it's limit instead of it's position.
  - getNormalized
```
boolean getNormalized()
```
    True, if GL shall normalize fixed point data while converting them into float.
    Default behavior (of the fixed function pipeline) is true for fixed point data type and false for floating point data types.
  - getStride
```
int getStride()
```
    Returns:
    the byte offset between consecutive components
  - toString
```
String toString()
```
    Overrides:
    
    toString in class Object
  - destroy
```
void destroy(GL gl)
```

Interface GLArrayData

Method Summary

Method Detail

associate

isVertexAttribute

getIndex

getName

setName

getLocation

setLocation

setLocation

setLocation

isVBO

getVBOOffset

getVBOName

getVBOUsage

getVBOTarget

getBuffer

getComponentCount

getComponentType

getComponentSizeInBytes

getElementCount

getSizeInBytes

getNormalized

getStride

toString

destroy