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/*
*
* Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/NoticeExplan/
*
*/
// -*- C++ -*-
/*
* Copyright (C) 1990,91 Silicon Graphics, Inc.
*
_______________________________________________________________________
______________ S I L I C O N G R A P H I C S I N C . ____________
|
| $Revision: 1.1.1.1 $
|
| Description:
| This file defines the SoMaterialBundle class.
|
| Author(s) : Paul S. Strauss
|
______________ S I L I C O N G R A P H I C S I N C . ____________
_______________________________________________________________________
*/
#ifndef _SO_MATERIAL_BUNDLE
#define _SO_MATERIAL_BUNDLE
#include <Inventor/bundles/SoBundle.h>
class SoGLLazyElement;
//////////////////////////////////////////////////////////////////////////////
//
// Class: SoMaterialBundle
//
// Bundle that allows shapes to deal with materials more easily.
// Since materials deal with several elements simultaneously, this
// bundle hides a lot of this work from shapes.
//
// Much of the functionality of this bundle has been replaced by the
// SoLazyElement.
//
//////////////////////////////////////////////////////////////////////////////
SoEXTENDER class SoMaterialBundle : public SoBundle {
public:
// Constructor - takes the action the bundle is used for
SoMaterialBundle(SoAction *action);
// Destructor
~SoMaterialBundle();
// This can be called by shapes to prepare for sending multiple
// materials later on. It is not required, since all of the send
// methods call it if necessary. However, it allows the bundle to
// set up some optimizations that are not possible to do later on.
// This should never be called between calls to glBegin() and
// glEnd().
void setUpMultiple()
{ accessElements(FALSE, FALSE);
sendMultiple = TRUE; }
// Makes sure the first defined material in the state is sent to
// GL. This should never be called between calls to glBegin() and
// glEnd().
void sendFirst() { send(0, FALSE); }
// Sends indexed material to the GL if it's not already there.
// The second paramater should be TRUE if this send is between a
// glBegin() and glEnd() call, in which case the stipple pattern
// commands for screen-door transparency won't be sent.
void send(int index, SbBool isBetweenBeginEnd)
{ reallySend(index, isBetweenBeginEnd, FALSE); }
// Sends indexed material to the GL even if it's already there.
// This method can be used by SoMaterial and related nodes to send
// the base material to the GL to avoid cache dependencies on materials.
void forceSend(int index)
{ reallySend(index, FALSE, TRUE); }
// Returns TRUE if only base color part of material is used
SbBool isColorOnly() const { return colorOnly; }
private:
SbBool firstTime; // TRUE if nothing sent yet
int lastIndex; // Last index reallySend()ed
SbBool colorOnly; // TRUE if only base color sent
SbBool fastColor; // TRUE if can send color for diffColor
int numMaterials; // Number of materials
SbBool sendMultiple; // indicates multiple diffuse are sent.
// Material component elements:
const SoGLLazyElement *lazyElt;
// Really sends stuff to GL
void reallySend(int index, SbBool isBetweenBeginEnd,
SbBool avoidFastColor);
// Accesses and stores pointers to necessary elements
void accessElements(SbBool isBetweenBeginEnd,
SbBool avoidFastColor);
};
#endif /* _SO_MATERIAL_BUNDLE */
|
