Distorted Android

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

// Copyright 2016 Leszek Koltunski                                                               //

//                                                                                               //

// This file is part of Distorted.                                                               //

//                                                                                               //

// Distorted is free software: you can redistribute it and/or modify                             //

// it under the terms of the GNU General Public License as published by                          //

// the Free Software Foundation, either version 2 of the License, or                             //

// (at your option) any later version.                                                           //

//                                                                                               //

// Distorted 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 for more details.                                                  //

//                                                                                               //

// You should have received a copy of the GNU General Public License                             //

// along with Distorted.  If not, see <http://www.gnu.org/licenses/>.                            //

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

package org.distorted.library;

import org.distorted.library.message.EffectMessage;

import org.distorted.library.program.FragmentUniformsException;

import org.distorted.library.program.LinkingException;

import org.distorted.library.program.VertexCompilationException;

import org.distorted.library.program.VertexUniformsException;

import org.distorted.library.type.Dynamic1D;

import org.distorted.library.type.Static1D;

import java.nio.ByteOrder;

import java.nio.FloatBuffer;

class EffectQueuePostprocess extends EffectQueue

  {

    {                                       // where G(x)= (1/(sqrt(2*PI))) * e^(-(x^2)/2). The last 0 terminates.

    0.381393f, 0.377806f, 0.373916f, 0.369733f, 0.365268f, 0.360532f, 0.355538f, 0.350297f, 0.344823f, 0.339129f,

    0.333229f, 0.327138f, 0.320868f, 0.314436f, 0.307856f, 0.301142f, 0.294309f, 0.287373f, 0.280348f, 0.273248f,

    0.266089f, 0.258884f, 0.251648f, 0.244394f, 0.237135f, 0.229886f, 0.222657f, 0.215461f, 0.208311f, 0.201217f,

    0.194189f, 0.187238f, 0.180374f, 0.173605f, 0.166940f, 0.160386f, 0.153951f, 0.147641f, 0.141462f, 0.135420f,

    0.129520f, 0.123765f, 0.118159f, 0.112706f, 0.107408f, 0.102266f, 0.097284f, 0.092461f, 0.087797f, 0.083294f,

    0.078951f, 0.074767f, 0.070741f, 0.066872f, 0.063158f, 0.059596f, 0.056184f, 0.052920f, 0.049801f, 0.046823f,

    0.043984f, 0.041280f, 0.038707f, 0.036262f, 0.033941f, 0.031740f, 0.029655f, 0.027682f, 0.025817f, 0.024056f,

    0.022395f, 0.020830f, 0.019357f, 0.017971f, 0.016670f, 0.015450f, 0.014305f, 0.013234f, 0.012232f, 0.011295f,

    0.010421f, 0.009606f, 0.008847f, 0.008140f, 0.007483f, 0.006873f, 0.006307f, 0.005782f, 0.005296f, 0.004847f,

  private static final int TEX_DATA_SIZE= 2; // Post Program: size of the texture coordinate data in elements.

  private static final int INDEX = EffectTypes.POSTPROCESS.ordinal();

  static

    {

    int bytes_per_float = 4;

    float[] textureNor= {  0.0f,  0.0f,   0.0f, 1.0f,  1.0f, 0.0f,  1.0f, 1.0f };

    float[] textureInv= {  0.0f,  0.0f,   1.0f, 0.0f,  0.0f, 1.0f,  1.0f, 1.0f };

  private static float[] mTmpMatrix = new float[16];

  // BLUR effect

  private static DistortedProgram mBlurProgram;

  EffectQueuePostprocess(long id)

    { 

    super(id,NUM_UNIFORMS,NUM_CACHE,INDEX );

    }

  static void createProgram(Resources resources)

  throws FragmentCompilationException,VertexCompilationException,VertexUniformsException,FragmentUniformsException,LinkingException

    {

    final InputStream postFragmentStream = resources.openRawResource(R.raw.blur_fragment_shader);

                                        "#version 100\n",

                                        "#version 100\n#define MAX_BLUR "+MAX_BLUR);

    mRadiusH    = GLES30.glGetUniformLocation( blurProgramH, "u_Radius");

    mMVPMatrixH = GLES30.glGetUniformLocation( blurProgramH, "u_MVPMatrix");

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

  synchronized void compute(long currTime) 

    {

    if( currTime==mTime ) return;

    if( mTime==0 ) mTime = currTime;

    long step = (currTime-mTime);

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

      {

      if( mInter[0][i]!=null && mInter[0][i].interpolateMain(mUniforms ,NUM_UNIFORMS*i, mCurrentDuration[i], step) )

        {

        for(int j=0; j<mNumListeners; j++)

          EffectMessageSender.newMessage( mListeners.elementAt(j),

                                          EffectMessage.EFFECT_FINISHED,

                                         (mID[i]<<EffectTypes.LENGTH)+EffectTypes.POSTPROCESS.type,

                                          mName[i],

                                          mObjectID);

        if( EffectNames.isUnity(mName[i], mUniforms, NUM_UNIFORMS*i) )

          {

          remove(i);

          i--;

          continue;

          }

        else mInter[0][i] = null;

        }

      mCurrentDuration[i] += step;

      }

    mTime = currTime;  

    }  

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

  protected void moveEffect(int index)

    {

    mUniforms[NUM_UNIFORMS*index  ] = mUniforms[NUM_UNIFORMS*(index+1)  ];

    mUniforms[NUM_UNIFORMS*index+1] = mUniforms[NUM_UNIFORMS*(index+1)+1];

    mUniforms[NUM_UNIFORMS*index+2] = mUniforms[NUM_UNIFORMS*(index+1)+2];

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

    float x = 0.0f;

    mWeights[0] = GAUSSIAN[0];

    mOffsets[0] = 0.0f;

    float sum = GAUSSIAN[0];

    int j;

    float z;

    for(int i=1; i<=radius; i++)

      {

      x += P;

      j = (int)x;

      z = x-j;

      sum += 2*mWeights[i];

      }

      {

      mWeights[i] /= sum;

      }

    int numloops = radius/2;

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

      {

      mOffsets[i+1] /= mWeights[i+1];

      }

    if( radius%2 == 1 )

      {

      int index = radius/2 +1;

      mOffsets[index]=mOffsets[radius];

      mWeights[index]=mWeights[radius];

      radius = numloops+1;

      }

    else

      {

      radius = numloops;

    }

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

// w,h - width and height of the input texture. MVP - Model-View-Projection matrix to apply to the

// texture; df - output FBO.

  synchronized void render(float w, float h, float[] mvp, DistortedFramebuffer df)

    {

    mBlurProgram.useProgram();

    float adjust = 1/h;

    for(int i=0; i<=radius; i++) mOffsets[i] *= adjust;

    GLES30.glUniform1i( mRadiusH, radius);

    Matrix.setIdentityM(mTmpMatrix, 0);

    Matrix.translateM(mTmpMatrix, 0, 0, 0, -mBufferFBO.mDistance);

    Matrix.multiplyMM(mMVPMatrix, 0, mBufferFBO.mProjectionMatrix, 0, mTmpMatrix, 0);

    // horizontal blur

    GLES30.glVertexAttribPointer(mBlurProgram.mAttribute[1], TEX_DATA_SIZE, GLES30.GL_FLOAT, false, 0, mQuadTextureInv);

    mBufferFBO.setAsInput();

    df.setAsOutput();

    GLES30.glVertexAttribPointer(mBlurProgram.mAttribute[1], TEX_DATA_SIZE, GLES30.GL_FLOAT, false, 0, mQuadTextureInv);

// blur

    if( mMax[INDEX]>mNumEffects )

      {

      if( degree instanceof Dynamic1D)

        {

        mInter[0][mNumEffects] = (Dynamic1D)degree;

        }

      else if( degree instanceof Static1D)

        {

        mInter[0][mNumEffects] = null;

        mUniforms[NUM_UNIFORMS*mNumEffects] = ((Static1D)degree).getX();

        }

      else return -1;

      mInter[2][mNumEffects] = null;

      return addBase(eln);

      }

    return -1;

    }

  }