org.scijava.java3d.ShaderAppearance Maven / Gradle / Ivy
/*
* Copyright 2004-2008 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
package org.scijava.java3d;
import java.util.Hashtable;
/**
* The ShaderAppearance object defines programmable shading attributes
* that can be set as a component object of a Shape3D node. The
* ShaderAppearance rendering state adds the following attributes in
* addition to those defined by Appearance:
*
*
* - Shader program - specifies the shader program...
*
*
* - Shader attribute set - specifies the shader parameters, both as
* explicit attributes and as implicit bindings to Java 3D
* state...
*
*
* The ShaderAppearance object modifies the definition of some of the
* attributes in Appearance:
*
*
* - Coloring attributes - XXXXX
*
*
* - Line attributes - XXXXX
*
*
* - Point attributes - XXXXX
*
*
* - Polygon attributes - XXXXX
*
*
* - Rendering attributes - XXXXX
*
*
* - Transparency attributes - XXXXX
*
*
* - Material - XXXXX
*
*
* - Texture - XXXXX
*
*
* - Texture attributes - XXXXX
*
*
* - Texture coordinate generation - XXXXX
*
*
* - Texture unit state - XXXXX
*
*
* @see ShaderProgram
* @see ShaderAttributeSet
*
* @since Java 3D 1.4
*/
public class ShaderAppearance extends Appearance {
/**
* Specifies that this ShaderAppearance object allows reading its
* ShaderProgram component information.
*/
public static final int
ALLOW_SHADER_PROGRAM_READ =
CapabilityBits.SHADER_APPEARANCE_ALLOW_SHADER_PROGRAM_READ;
/**
* Specifies that this ShaderAppearance object allows writing its
* ShaderProgram component information.
*/
public static final int
ALLOW_SHADER_PROGRAM_WRITE =
CapabilityBits.SHADER_APPEARANCE_ALLOW_SHADER_PROGRAM_WRITE;
/**
* Specifies that this ShaderAppearance object allows reading its
* ShaderAttributeSet component information.
*/
public static final int
ALLOW_SHADER_ATTRIBUTE_SET_READ =
CapabilityBits.SHADER_APPEARANCE_ALLOW_SHADER_ATTRIBUTE_SET_READ;
/**
* Specifies that this ShaderAppearance object allows writing its
* ShaderAttributeSet component information.
*/
public static final int
ALLOW_SHADER_ATTRIBUTE_SET_WRITE =
CapabilityBits.SHADER_APPEARANCE_ALLOW_SHADER_ATTRIBUTE_SET_WRITE;
// Array for setting default read capabilities
private static final int[] readCapabilities = {
ALLOW_SHADER_PROGRAM_READ,
ALLOW_SHADER_ATTRIBUTE_SET_READ
};
/**
* Constructs a ShaderAppearance component object using defaults for all
* state variables. All component object references are initialized
* to null.
*/
public ShaderAppearance() {
// Just use default values
// set default read capabilities
setDefaultReadCapabilities(readCapabilities);
}
/**
* Creates the retained mode ShaderAppearanceRetained object that this
* ShaderAppearance component object will point to.
*/
@Override
void createRetained() {
this.retained = new ShaderAppearanceRetained();
this.retained.setSource(this);
}
/**
* Sets the ShaderProgram object to the specified object. Setting it to
* null causes a default pass-through shader to be used ???
*
* @param shaderProgram object that specifies the desired shader program
* @exception CapabilityNotSetException if appropriate capability is
* not set and this object is part of live or compiled scene graph
*/
public void setShaderProgram(ShaderProgram shaderProgram) {
if (isLiveOrCompiled()) {
if(!this.getCapability(ALLOW_SHADER_PROGRAM_WRITE))
throw new CapabilityNotSetException(J3dI18N.getString("ShaderAppearance0"));
}
((ShaderAppearanceRetained)this.retained).setShaderProgram(shaderProgram);
}
/**
* Retrieves the current ShaderProgram object.
*
* @return the ShaderProgram object
* @exception CapabilityNotSetException if appropriate capability is
* not set and this object is part of live or compiled scene graph
*/
public ShaderProgram getShaderProgram() {
if (isLiveOrCompiled()) {
if(!this.getCapability(ALLOW_SHADER_PROGRAM_READ))
throw new CapabilityNotSetException(J3dI18N.getString("ShaderAppearance1"));
}
return ((ShaderAppearanceRetained)this.retained).getShaderProgram();
}
/**
* Sets the ShaderAttributeSet object to the specified object. Setting it to
* null is equivalent to specifying an empty set of attributes.
*
* @param shaderAttributeSet object that specifies the desired shader attributes
* @exception CapabilityNotSetException if appropriate capability is
* not set and this object is part of live or compiled scene graph
*/
public void setShaderAttributeSet(ShaderAttributeSet shaderAttributeSet) {
if (isLiveOrCompiled()) {
if(!this.getCapability(ALLOW_SHADER_ATTRIBUTE_SET_WRITE))
throw new CapabilityNotSetException(J3dI18N.getString("ShaderAppearance2"));
}
((ShaderAppearanceRetained)this.retained).setShaderAttributeSet(shaderAttributeSet);
}
/**
* Retrieves the current ShaderAttributeSet object.
*
* @return the ShaderAttributeSet object
* @exception CapabilityNotSetException if appropriate capability is
* not set and this object is part of live or compiled scene graph
*/
public ShaderAttributeSet getShaderAttributeSet() {
if (isLiveOrCompiled()) {
if(!this.getCapability(ALLOW_SHADER_ATTRIBUTE_SET_READ))
throw new CapabilityNotSetException(J3dI18N.getString("ShaderAppearance3"));
}
return ((ShaderAppearanceRetained)this.retained).getShaderAttributeSet();
}
/**
* @deprecated replaced with cloneNodeComponent(boolean forceDuplicate)
*/
@Override
public NodeComponent cloneNodeComponent() {
ShaderAppearance a = new ShaderAppearance();
a.duplicateNodeComponent(this);
return a;
}
/**
* NOTE: Applications should not call this method directly.
* It should only be called by the cloneNode method.
*
* @deprecated replaced with duplicateNodeComponent(
* NodeComponent originalNodeComponent, boolean forceDuplicate)
*/
@Override
public void duplicateNodeComponent(NodeComponent originalNodeComponent) {
checkDuplicateNodeComponent(originalNodeComponent);
}
/**
* Copies all ShaderAppearance information from
* originalNodeComponent into
* the current node. This method is called from the
* cloneNode method which is, in turn, called by the
* cloneTree method.
*
* @param originalNodeComponent the original node to duplicate.
* @param forceDuplicate when set to true, causes the
* duplicateOnCloneTree flag to be ignored. When
* false, the value of each node's
* duplicateOnCloneTree variable determines whether
* NodeComponent data is duplicated or copied.
*
* @exception RestrictedAccessException if this object is part of a live
* or compiled scenegraph.
*
* @see Node#cloneTree
* @see NodeComponent#setDuplicateOnCloneTree
*/
@Override
void duplicateAttributes(NodeComponent originalNodeComponent,
boolean forceDuplicate) {
super.duplicateAttributes(originalNodeComponent, forceDuplicate);
Hashtable hashtable = originalNodeComponent.nodeHashtable;
ShaderAppearanceRetained app =
(ShaderAppearanceRetained) originalNodeComponent.retained;
ShaderAppearanceRetained rt = (ShaderAppearanceRetained) retained;
rt.setShaderProgram((ShaderProgram) getNodeComponent(app.getShaderProgram(),
forceDuplicate,
hashtable));
}
/**
* This function is called from getNodeComponent() to see if any of
* the sub-NodeComponents duplicateOnCloneTree flag is true.
* If it is the case, current NodeComponent needs to
* duplicate also even though current duplicateOnCloneTree flag is false.
* This should be overwrite by NodeComponent which contains sub-NodeComponent.
*/
@Override
boolean duplicateChild() {
if (super.duplicateChild())
return true;
if (getDuplicateOnCloneTree())
return true;
ShaderAppearanceRetained rt = (ShaderAppearanceRetained) retained;
NodeComponent nc;
nc = rt.getShaderProgram();
if ((nc != null) && nc.getDuplicateOnCloneTree())
return true;
return false;
}
}