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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2016 Leszek Koltunski //
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// //
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// This file is part of Distorted. //
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// //
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// Distorted is free software: you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation, either version 2 of the License, or //
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// (at your option) any later version. //
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// //
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// Distorted is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with Distorted. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////////////////////
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package org.distorted.library;
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import org.distorted.library.message.EffectListener;
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import org.distorted.library.type.Data1D;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Class containing the queue of postprocessing effects.
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* <p>
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* This better be separate from the main DistortedEffects class, because we want to be able to apply
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* the same postprocessing effects (i.e. not only the same effects, but the very same instance of this
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* object) to several Children of a Node. Reason for that: if several children have the same Object,
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* it is easy to group them into 'Buckets' where each bucket has the same postprocessing effects and
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* is therefore rendered to the same buffer, which is then postprocessed in one go.
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* <p>
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* The queue holds actual effects to be applied to a given bucket of several (DistortedTexture,MeshObject) combos.
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*/
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public class DistortedEffectsPostprocess
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{
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private static long mNextID =0;
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private long mID;
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private EffectQueuePostprocess mP;
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private boolean postprocessCloned;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private void initializeEffectLists(DistortedEffectsPostprocess d, int flags)
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{
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if( (flags & Distorted.CLONE_POSTPROCESS) != 0 )
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{
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mP = d.mP;
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postprocessCloned = true;
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}
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else
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{
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mP = new EffectQueuePostprocess(mID);
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postprocessCloned = false;
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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EffectQueuePostprocess getPostprocess()
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{
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return mP;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private void releasePriv()
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{
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if( !postprocessCloned) mP.abortAll(false);
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mP = null;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// PUBLIC API
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Create empty effect queue.
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*/
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public DistortedEffectsPostprocess()
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{
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mID = ++mNextID;
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initializeEffectLists(this,0);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Copy constructor.
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* <p>
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* Whatever we do not clone gets created just like in the default constructor.
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*
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* @param dc Source object to create our object from
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* @param flags A bitmask of values specifying what to copy.
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* Currently the only values possible are CLONE_NOTHING or CLONE_POSTPROCESS.
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*/
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public DistortedEffectsPostprocess(DistortedEffectsPostprocess dc, int flags)
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{
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mID = ++mNextID;
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initializeEffectLists(dc,flags);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Releases all resources. After this call, the queue should not be used anymore.
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*/
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@SuppressWarnings("unused")
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public synchronized void delete()
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{
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releasePriv();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Returns unique ID of this instance.
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*
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* @return ID of the object.
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*/
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@SuppressWarnings("unused")
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public long getID()
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{
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return mID;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Adds the calling class to the list of Listeners that get notified each time some event happens
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* to one of the Effects in the queues. Nothing will happen if 'el' is already in the list.
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*
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* @param el A class implementing the EffectListener interface that wants to get notifications.
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*/
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@SuppressWarnings("unused")
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public void registerForMessages(EffectListener el)
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{
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mP.registerForMessages(el);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Removes the calling class from the list of Listeners.
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*
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* @param el A class implementing the EffectListener interface that no longer wants to get notifications.
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*/
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@SuppressWarnings("unused")
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public void deregisterForMessages(EffectListener el)
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{
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mP.deregisterForMessages(el);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Aborts all Effects.
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* @return Number of effects aborted.
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*/
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@SuppressWarnings("unused")
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public int abortAllEffects()
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{
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return mP.abortAll(true);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Aborts all Effects of a given type (currently only POSTPROCESSING Effects).
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*
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* @param type one of the constants defined in {@link EffectTypes}
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* @return Number of effects aborted.
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*/
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@SuppressWarnings("unused")
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public int abortEffects(EffectTypes type)
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{
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switch(type)
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{
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case POSTPROCESS: return mP.abortAll(true);
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default : return 0;
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Aborts a single Effect.
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*
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* @param id ID of the Effect we want to abort.
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* @return number of Effects aborted. Always either 0 or 1.
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*/
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@SuppressWarnings("unused")
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public int abortEffect(long id)
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{
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int type = (int)(id&EffectTypes.MASK);
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if( type==EffectTypes.POSTPROCESS.type ) return mP.removeByID(id>>EffectTypes.LENGTH);
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return 0;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Abort all Effects of a given name, for example all blurs.
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*
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* @param name one of the constants defined in {@link EffectNames}
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* @return number of Effects aborted.
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*/
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@SuppressWarnings("unused")
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public int abortEffects(EffectNames name)
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{
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switch(name.getType())
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{
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case POSTPROCESS: return mP.removeByType(name);
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default : return 0;
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Print some info about a given Effect to Android's standard out. Used for debugging only.
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*
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* @param id Effect ID we want to print info about
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* @return <code>true</code> if a single Effect of type effectType has been found.
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*/
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@SuppressWarnings("unused")
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public boolean printEffect(long id)
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{
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int type = (int)(id&EffectTypes.MASK);
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if( type==EffectTypes.POSTPROCESS.type ) return mP.printByID(id>>EffectTypes.LENGTH);
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return false;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Returns the maximum number of Postprocess effects.
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*
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* @return The maximum number of Postprocess effects
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*/
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@SuppressWarnings("unused")
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public static int getMaxPostprocess()
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{
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return EffectQueue.getMax(EffectTypes.POSTPROCESS.ordinal());
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Sets the maximum number of Postprocess effects that can be stored in a single EffectQueue at one time.
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* This can fail if:
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* <ul>
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* <li>the value of 'max' is outside permitted range (0 ≤ max ≤ Byte.MAX_VALUE)
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* <li>We try to increase the value of 'max' when it is too late to do so already. It needs to be called
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* before the Fragment Shader gets compiled, i.e. before the call to {@link Distorted#onCreate}. After this
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* time only decreasing the value of 'max' is permitted.
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* <li>Furthermore, this needs to be called before any instances of the DistortedEffects class get created.
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* </ul>
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*
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* @param max new maximum number of simultaneous Postprocess Effects. Has to be a non-negative number not greater
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* than Byte.MAX_VALUE
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* @return <code>true</code> if operation was successful, <code>false</code> otherwise.
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*/
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@SuppressWarnings("unused")
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public static boolean setMaxPostprocess(int max)
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{
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return EffectQueue.setMax(EffectTypes.POSTPROCESS.ordinal(),max);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Individual effect functions.
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Postprocess-based effects
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Blur the object.
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*
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* @param radius The 'strength' if the effect, in pixels. 0 = no blur, 10 = when blurring a given pixel,
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* take into account 10 pixels in each direction.
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* @return ID of the effect added, or -1 if we failed to add one.
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*/
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public long blur(Data1D radius)
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{
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return mP.add(EffectNames.BLUR, radius);
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}
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}
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