javax.media.j3d

Class ShaderAttributeBinding

java.lang.Object

javax.media.j3d.SceneGraphObject

javax.media.j3d.NodeComponent

javax.media.j3d.ShaderAttribute

javax.media.j3d.ShaderAttributeBinding

public class ShaderAttributeBinding
extends ShaderAttribute

The ShaderAttributeBinding object encapsulates a uniform attribute whose value is bound to a Java 3D system attribute. The shader variable attrName is implicitly set to the value of the corresponding Java 3D system attribute j3dAttrName during rendering. attrName must be the name of a valid uniform attribute in the shader in which it is used. Otherwise, the attribute name will be ignored and a runtime error may be generated. j3dAttrName must be the name of a predefined Java 3D system attribute. An IllegalArgumentException will be thrown if the specified j3dAttrName is not one of the predefined system attributes. Further, the type of the j3dAttrName attribute must match the type of the corresponding attrName variable in the shader in which it is used. Otherwise, the shader will not be able to use the attribute and a runtime error may be generated.

Following is the list of predefined Java 3D system attributes:

TODO: replace the following with the real system attributes table


Name	Type	Description
something	Float	This is something (of course)
somethingElse	Tuple3f	This is something else

Depending on the shading language (and profile) being used, several Java 3D state attributes are automatically made available to the shader program as pre-defined uniform attributes. The application doesn't need to do anything to pass these attributes in to the shader program. The implementation of each shader language (e.g., Cg, GLSL) defines its own mapping from Java 3D attribute to uniform variable name.

A list of these attributes for each shader language can be found in the concrete subclass of ShaderProgram for that shader language.

NOTE: This class is not yet implemented.

Since:

Java 3D 1.4

See Also:

ShaderAttributeSet, ShaderProgram

Constructor Summary

Constructors

Constructor and Description
ShaderAttributeBinding(String attrName, String j3dAttrName) Constructs a new ShaderAttributeBinding from the specified (attrName, j3dAttrName) pair.

Method Summary

Methods

Modifier and Type	Method and Description
String	getJ3DAttributeName() Retrieves the name of the Java 3D system attribute that is bound to this shader attribute.

Methods inherited from class javax.media.j3d.ShaderAttribute

getAttributeName

Methods inherited from class javax.media.j3d.NodeComponent

cloneNodeComponent, cloneNodeComponent, duplicateNodeComponent, duplicateNodeComponent, getDuplicateOnCloneTree, setDuplicateOnCloneTree

Methods inherited from class javax.media.j3d.SceneGraphObject

clearCapability, clearCapabilityIsFrequent, duplicateSceneGraphObject, getCapability, getCapabilityIsFrequent, getName, getUserData, isCompiled, isLive, setCapability, setCapabilityIsFrequent, setName, setUserData, toString, updateNodeReferences

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ShaderAttributeBinding

public ShaderAttributeBinding(String attrName,
                      String j3dAttrName)

Constructs a new ShaderAttributeBinding from the specified (attrName, j3dAttrName) pair.

Parameters:

attrName - the name of the shader attribute to be added

j3dAttrName - the name of the Java 3D attribute to bind to the shader attribute

Throws:

UnsupportedOperationException - this class is not yet implemented

NullPointerException - if attrName or j3dAttrName is null

IllegalArgumentException - if j3dAttrName is not the name of a valid predefined Java 3D system attribute

Method Detail

getJ3DAttributeName

public String getJ3DAttributeName()

Retrieves the name of the Java 3D system attribute that is bound to this shader attribute.

Returns:

the name of the Java 3D system attribute that is bound to this shader attribute