org.xith3d.render.states
Class StateUnit

java.lang.Object
  org.xith3d.render.states.StateSortable
      org.xith3d.render.states.StateUnit

Direct Known Subclasses:

ColoringStateUnit, FogStateUnit, LightingStateUnit, LineAttribsStateUnit, MaterialStateUnit, PointAttribsStateUnit, PolygonAttribsStateUnit, RenderingAttribsStateUnit, ShaderProgramStateUnit, TextureUnitStateUnit

public abstract class StateUnit
extends StateSortable

A shader is what is responsible for setting up the graphics state to render an atom. StateUnits can be compared to other StateUnits in order to sort them in an efficient manner.

Each StateUnit needs to have an API peer which is capable of issuing the proper commands to the 3d card. Thus the StateUnit really is a container for the information needed to set OpenGL states, but the implementation of the StateUnit is within the hardware interface layer.

Field Summary

static int	MAX_ATOM_TYPES
static int	MAX_STATE_TYPES

Constructor Summary

StateUnit(int stateType, boolean isDefault)

Method Summary

abstract NodeComponent	getNodeComponent()
boolean	isDefault()
abstract boolean	isTranslucent() Because the rendering engine needs to deal with translucent geometry differently the shader needs to be able to indicate whether it is translucent or not.

Methods inherited from class org.xith3d.render.states.StateSortable

getCachedStateId, getStateId, getStateType, updateCachedStateId

Methods inherited from class java.lang.Object

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

Field Detail

MAX_STATE_TYPES

public static final int MAX_STATE_TYPES

See Also:

Constant Field Values

MAX_ATOM_TYPES

public static final int MAX_ATOM_TYPES

See Also:

Constant Field Values

Constructor Detail

StateUnit

public StateUnit(int stateType,
                 boolean isDefault)

Method Detail

getNodeComponent

public abstract NodeComponent getNodeComponent()

isDefault

public final boolean isDefault()

isTranslucent

public abstract boolean isTranslucent()

Because the rendering engine needs to deal with translucent geometry differently the shader needs to be able to indicate whether it is translucent or not.

Returns:

true, if the Shader is translucent