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library / src / main / java / org / distorted / library / EffectTypes.java @ 30548891

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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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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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 * Types of Effects one can add to the DistortedEffects queues.
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 * <p>
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 * Each effect type goes to an independent queue; the queues get executed one-by-one
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 * and are each a class descendant from EffectQueue.
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 */
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public enum EffectTypes
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  {
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  /**
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   * Effects that change the ModelView matrix: Rotations, Moves, Shears, Scales.
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   */
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  MATRIX      ( 0x1 ),  // we will need to perform bitwise operations on those - so keep the values 1,2,4,8...
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  /**
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   * Effects that get executed in the Vertex shader: various distortions of the vertices.
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   */
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  VERTEX      ( 0x2 ),
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  /**
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   * Effects executed in the Fragment shader: changes of color, hue, transparency levels, etc.
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   */
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  FRAGMENT    ( 0x4 ),
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  /**
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   * Postprocessing done to the texture the first stage fragment shader created (if this queue is
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   * empty, the first stage skips this intermediate texture)
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   */
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  POSTPROCESS ( 0x8 );
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  final static int LENGTH = values().length;  // The number of effect types.
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  final static int MASK= (1<<LENGTH)-1;       // Needed when we do bitwise operations on Effect Types.
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  final int type;
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  EffectTypes(int type)
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    {
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    this.type = type;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// called from EffectQueue
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  static void reset(int[] maxtable)
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    {
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    maxtable[0] =10;  // By default, there can be a maximum 10 MATRIX effects in a single
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                      // EffectQueueMatrix at any given time. This can be changed with a call
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                      // to EffectQueueMatrix.setMax(int)
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    maxtable[1] = 5;  // Max 5 VERTEX Effects
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    maxtable[2] = 5;  // Max 5 FRAGMENT Effects
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    maxtable[3] = 5;  // Max 5 POSTPROCESSING Effects
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  }
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