Distorted Android

///////////////////////////////////////////////////////////////////////////////////////////////////

// Copyright 2016 Leszek Koltunski  leszek@koltunski.pl                                          //

//                                                                                               //

// This file is part of Distorted.                                                               //

//                                                                                               //

// 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.                                               //

//                                                                                               //

// 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA                //

///////////////////////////////////////////////////////////////////////////////////////////////////

package org.distorted.library.effectqueue;

import android.opengl.GLES30;

import org.distorted.library.helpers.MatrixHelper;

import org.distorted.library.effect.EffectType;

import org.distorted.library.effect.MatrixEffect;

import org.distorted.library.message.EffectMessageSender;

///////////////////////////////////////////////////////////////////////////////////////////////////

class EffectQueueMatrix extends EffectQueue

  {

  private static final int NUM_FLOAT_UNIFORMS = MatrixEffect.NUM_FLOAT_UNIFORMS;

  private static final int NUM_INT_UNIFORMS   = MatrixEffect.NUM_INT_UNIFORMS;

  private static final boolean USE_UBO        = false;

  private static final int INDEX = EffectType.MATRIX.ordinal();

  private static final float[] mMVPMatrix       = new float[16];

  private static final float[] mModelViewMatrixP= new float[16];

  private static final float[] mModelViewMatrixV= new float[16];

  private static final int[] mMVPMatrixH = new int[MAIN_VARIANTS];

  private static final int[] mMVMatrixPH = new int[MAIN_VARIANTS];

  private static final int[] mMVMatrixVH = new int[MAIN_VARIANTS];

///////////////////////////////////////////////////////////////////////////////////////////////////

  EffectQueueMatrix()

    { 

    super(NUM_FLOAT_UNIFORMS, NUM_INT_UNIFORMS, USE_UBO, INDEX);

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  EffectQueueMatrix(EffectQueueMatrix source)

    {

    super(source);

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  static void uniforms(int mProgramH, int variant)

    {

    mMVPMatrixH[variant]= GLES30.glGetUniformLocation(mProgramH, "u_MVPMatrix");

    mMVMatrixPH[variant]= GLES30.glGetUniformLocation(mProgramH, "u_MVMatrixP");

    mMVMatrixVH[variant]= GLES30.glGetUniformLocation(mProgramH, "u_MVMatrixV");

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  void compute(long currTime, long step)

    {

    if( mNumEffects>0 )

      {

      float[] array = mUBF.getBackingArray();

      for(int i=0; i<mNumEffects; i++)

        {

        if( mEffects[i].compute(array, NUM_FLOAT_UNIFORMS*i, currTime, step) )

          {

          EffectMessageSender.newMessage(mEffects[i]);

          }

        }

      }

    }  

///////////////////////////////////////////////////////////////////////////////////////////////////

  void send(float distance, float mipmap, float[] projection, int variant)

    {

    // i.e. setIdentity(); translate(0,0,-distance); scale(mipmap,mipmap,mipmap)

    mModelViewMatrixV[ 0] = mModelViewMatrixP[ 0] = mipmap;

    mModelViewMatrixV[ 1] = mModelViewMatrixP[ 1] = 0;

    mModelViewMatrixV[ 2] = mModelViewMatrixP[ 2] = 0;

    mModelViewMatrixV[ 3] = mModelViewMatrixP[ 3] = 0;

    mModelViewMatrixV[ 4] = mModelViewMatrixP[ 4] = 0;

    mModelViewMatrixV[ 5] = mModelViewMatrixP[ 5] = mipmap;

    mModelViewMatrixV[ 6] = mModelViewMatrixP[ 6] = 0;

    mModelViewMatrixV[ 7] = mModelViewMatrixP[ 7] = 0;

    mModelViewMatrixV[ 8] = mModelViewMatrixP[ 8] = 0;

    mModelViewMatrixV[ 9] = mModelViewMatrixP[ 9] = 0;

    mModelViewMatrixV[10] = mModelViewMatrixP[10] = mipmap;

    mModelViewMatrixV[11] = mModelViewMatrixP[11] = 0;

    mModelViewMatrixV[12] = mModelViewMatrixP[12] = 0;

    mModelViewMatrixV[13] = mModelViewMatrixP[13] = 0;

    mModelViewMatrixV[14] = mModelViewMatrixP[14] = -distance;

    mModelViewMatrixV[15] = mModelViewMatrixP[15] = 1;

    float[] array = mUBF.getBackingArray();

    // the 'Model' part of the MV matrix

    for(int i=mNumEffects-1; i>=0; i--)

      {

      ((MatrixEffect)mEffects[i]).apply(mModelViewMatrixP,mModelViewMatrixV,array,i);

      }

    // combined Model-View-Projection matrix

    MatrixHelper.multiply(mMVPMatrix, projection, mModelViewMatrixP);

    GLES30.glUniformMatrix4fv(mMVMatrixVH[variant], 1, false, mModelViewMatrixV, 0);

    GLES30.glUniformMatrix4fv(mMVMatrixPH[variant], 1, false, mModelViewMatrixP, 0);

    GLES30.glUniformMatrix4fv(mMVPMatrixH[variant], 1, false, mMVPMatrix       , 0);

    }

  }