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.main;

import org.distorted.library.effect.Effect;

import org.distorted.library.effect.EffectName;

import org.distorted.library.effectqueue.EffectQueue;

import org.distorted.library.effect.EffectType;

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

/**

 * Class containing Matrix, Vertex, Fragment and Postprocessing effect queues.

 * <p>

 * The queues hold actual effects to be applied to a given (InputSurface,MeshBase) combo.

 */

public class DistortedEffects

  {

  private final long mID;

  private final EffectQueue[] mQueues;

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

/**

 * @y.exclude

 */

  public EffectQueue[] getQueues()

    {

    return mQueues;

    }

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

// PUBLIC API

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

/**

 * Create empty effect queue.

 */

 public DistortedEffects()

    {

    mID = InternalStackFrameList.getNextEffectsID();

    mQueues = EffectQueue.createQueues();

    }

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

/**

 * Copy constructor.

 * <p>

 * Whatever we do not clone gets created just like in the default constructor.

 *

 * @param dc    Source object to create our object from

 * @param flags A bitmask of values specifying what to copy.

 *              For example, CLONE_VERTEX | CLONE_MATRIX.

 */

  public DistortedEffects(DistortedEffects dc, int flags)

    {

    mID = InternalStackFrameList.getNextEffectsID();

    mQueues = EffectQueue.createQueues(dc.getQueues(),flags);

    }

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

/**

 * Returns unique ID of this instance.

 *

 * @return ID of the object.

 */

  public long getID()

      {

      return mID;

      }

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

/**

 * Return if this queue contains effect with a given ID.

 */

  public boolean exists(long id)

    {

    int num = (int)(id&EffectType.MASK);

    return mQueues[num].exists(id);

    }

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

/**

 * Aborts all Effects.

 * @return Number of effects aborted.

 */

  public int abortAllEffects()

    {

    int aborted = 0;

    for( int i=0; i<EffectType.LENGTH; i++)

      {

      aborted += mQueues[i].removeAll(true);

      }

    return aborted;

    }

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

/**

 * Aborts all Effects of a given type, for example all MATRIX Effects.

 * 

 * @param type one of the constants defined in {@link EffectType}

 * @return Number of effects aborted.

 */

  public int abortByType(EffectType type)

    {

    int num = type.ordinal();

    return mQueues[num].removeAll(true);

    }

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

/**

 * Aborts an Effect by its ID.

 *

 * @param id the Id of the Effect to be removed, as returned by getID().

 * @return Number of effects aborted.

 */

  public int abortById(long id)

    {

    int num = (int)(id&EffectType.MASK);

    return mQueues[num].removeById(id);

    }

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

/**

 * Aborts a single Effect.

 * 

 * @param effect the Effect we want to abort.

 * @return number of Effects aborted. Always either 0 or 1.

 */

  public int abortEffect(Effect effect)

    {

    int num = effect.getType().ordinal();

    return mQueues[num].removeEffect(effect);

    }

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

/**

 * Abort all Effects of a given name, for example all rotations.

 * 

 * @param name one of the constants defined in {@link EffectName}

 * @return number of Effects aborted.

 */

  public int abortByName(EffectName name)

    {

    int num = name.getType().ordinal();

    return mQueues[num].removeByName(name);

    }

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

/**

 * Add a new Effect to the tail of our queue.

 *

 * @param effect The Effect to add.

 * @return <code>true</code> if operation was successful, <code>false</code> otherwise.

 */

  public boolean apply(Effect effect)

    {

    int num = effect.getType().ordinal();

    return mQueues[num].add(effect);

    }

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

/**

 * Add a new Effect to our queue at a specified position.

 *

 * @param effect The Effect to add.

 * @param position the place in the effects queue where to add the new effect.

 * @return <code>true</code> if operation was successful, <code>false</code> otherwise.

 */

  public boolean apply(Effect effect, int position)

    {

    int num = effect.getType().ordinal();

    return mQueues[num].add(effect,position);

    }

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

/**

 * Mark the underlying OpenGL object for deletion. Actual deletion will take place on the next render.

 */

  public void markForDeletion()

    {

    for( int i=0; i<EffectType.LENGTH; i++)

      {

      mQueues[i].markForDeletion();

      }

    }

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

/**

 * Return number of effects of the given type currently in the Queue.

 *

 * @param type The EffectType.

 * @return Number of effects of the given type currently in the Queue.

 */

  public int getNumEffects(EffectType type)

    {

    int num = type.ordinal();

    return mQueues[num].getNumEffects();

    }

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

/**

 * Return a string describing all effects in the queues.

 */

  public String debug(int depth)

    {

    StringBuilder s = new StringBuilder();

    for(int i=0; i<depth; i++) s.append(" ");

    String space = s.toString();

    String mat = mQueues[0].retEffects();

    String ver = mQueues[1].retEffects();

    String fra = mQueues[2].retEffects();

    String pos = mQueues[3].retEffects();

    return space+"MAT: "+mat+"\n"+space+"VER: "+ver+"\n"+space+"FRA: "+fra+"\n"+space+"POS: "+pos;

    }

  }

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

// 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.main;

import android.opengl.GLES30;

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

/**

 * Class which represents a OpenGL Framebuffer object.

 * <p>

 * User is able to create offscreen FBOs and both a) render to them b) use their COLOR0 attachment as

 * an input texture. Attaching Depths and/or Stencils is also possible.

 */

public class DistortedFramebuffer extends InternalOutputSurface

  {

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

// Must be called from a thread holding OpenGL Context

  public void create()

    {

    if( mNumFBOs==DistortedLibrary.WAIT_FOR_FBO_QUEUE_SIZE )

      {

      // only now we know how many FBOs there should be

      mNumFBOs = DistortedLibrary.getQueueSize();

      allocateColor();

      allocateStuffDependantOnNumFBOS();

      }

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

    // COLOR

    if( mColorCreated==NOT_CREATED_YET )

      {

      GLES30.glGenTextures( mNumFBOs*mNumColors, mColorH, 0);

      GLES30.glGenFramebuffers(mNumFBOs, mFBOH, 0);

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

        {

        GLES30.glBindFramebuffer(GLES30.GL_FRAMEBUFFER, mFBOH[i]);

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

          {

          GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, mColorH[i*mNumColors+j]);

          GLES30.glTexParameteri(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_WRAP_S, GLES30.GL_REPEAT);

          GLES30.glTexParameteri(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_WRAP_T, GLES30.GL_REPEAT);

          GLES30.glTexParameterf(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_MIN_FILTER, GLES30.GL_NEAREST);

          GLES30.glTexParameterf(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_MAG_FILTER, GLES30.GL_LINEAR);

          GLES30.glTexImage2D(GLES30.GL_TEXTURE_2D, 0, GLES30.GL_RGBA, mRealWidth, mRealHeight, 0, GLES30.GL_RGBA, GLES30.GL_UNSIGNED_BYTE, null);

          }

        GLES30.glFramebufferTexture2D(GLES30.GL_FRAMEBUFFER, GLES30.GL_COLOR_ATTACHMENT0, GLES30.GL_TEXTURE_2D, mColorH[i*mNumColors], 0);

        GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, 0);

        }

      // TODO

      mColorCreated = checkStatus("color");

      GLES30.glBindFramebuffer(GLES30.GL_FRAMEBUFFER, 0);

      }

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

    // DEPTH / STENCIL

    if( mDepthStencilCreated==NOT_CREATED_YET ) // we need to create a new DEPTH or STENCIL attachment

      {

      GLES30.glGenTextures(mNumFBOs, mDepthStencilH, 0);

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

        {

        GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, mDepthStencilH[i]);

        GLES30.glTexParameteri(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_WRAP_S, GLES30.GL_REPEAT);

        GLES30.glTexParameteri(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_WRAP_T, GLES30.GL_REPEAT);

        GLES30.glTexParameteri(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_MIN_FILTER, GLES30.GL_NEAREST);

        GLES30.glTexParameteri(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_MAG_FILTER, GLES30.GL_NEAREST);

        if (mDepthStencil == DEPTH_NO_STENCIL)

          {

          GLES30.glTexImage2D(GLES30.GL_TEXTURE_2D, 0, GLES30.GL_DEPTH_COMPONENT, mRealWidth, mRealHeight, 0, GLES30.GL_DEPTH_COMPONENT, GLES30.GL_UNSIGNED_INT, null);

          }

        else if (mDepthStencil == BOTH_DEPTH_STENCIL)

          {

          GLES30.glTexImage2D(GLES30.GL_TEXTURE_2D, 0, GLES30.GL_DEPTH24_STENCIL8, mRealWidth, mRealHeight, 0, GLES30.GL_DEPTH_STENCIL, GLES30.GL_UNSIGNED_INT_24_8, null);

          }

        }

      GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, 0);

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

        {

        GLES30.glBindFramebuffer(GLES30.GL_FRAMEBUFFER, mFBOH[i]);

        if (mDepthStencil == DEPTH_NO_STENCIL)

          {

          GLES30.glFramebufferTexture2D(GLES30.GL_FRAMEBUFFER, GLES30.GL_DEPTH_ATTACHMENT, GLES30.GL_TEXTURE_2D, mDepthStencilH[i], 0);

          }

        else if (mDepthStencil == BOTH_DEPTH_STENCIL)

          {

          GLES30.glFramebufferTexture2D(GLES30.GL_FRAMEBUFFER, GLES30.GL_DEPTH_STENCIL_ATTACHMENT, GLES30.GL_TEXTURE_2D, mDepthStencilH[i], 0);

          }

        }

      // TODO

      mDepthStencilCreated = checkStatus("depth");

      GLES30.glBindFramebuffer(GLES30.GL_FRAMEBUFFER, 0);

      }

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

    // DETACH

    // TODO

    if( mDepthStencilCreated==DONT_CREATE && mDepthStencilH[0]>0 ) // we need to detach and recreate the DEPTH attachment.

      {

      // OpenGL ES 3.0.5 spec, chapter 4.4.2.4 :

      // "Note that the texture image is specifically not detached from any other framebuffer objects.

      //  Detaching the texture image from any other framebuffer objects is the responsibility of the application."

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

        {

        GLES30.glBindFramebuffer(GLES30.GL_FRAMEBUFFER, mFBOH[i]);

        GLES30.glFramebufferTexture2D(GLES30.GL_FRAMEBUFFER, GLES30.GL_DEPTH_ATTACHMENT, GLES30.GL_TEXTURE_2D, 0, 0);

        GLES30.glFramebufferTexture2D(GLES30.GL_FRAMEBUFFER, GLES30.GL_DEPTH_STENCIL_ATTACHMENT, GLES30.GL_TEXTURE_2D, 0, 0);

        mDepthStencilH[i]=0;

        }

      GLES30.glDeleteTextures(mNumFBOs, mDepthStencilH, 0);

      GLES30.glBindFramebuffer(GLES30.GL_FRAMEBUFFER, 0);

      }

    }

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

// TODO

  private int checkStatus(String message)

    {

    int status = GLES30.glCheckFramebufferStatus(GLES30.GL_FRAMEBUFFER);

    if(status != GLES30.GL_FRAMEBUFFER_COMPLETE)

      {

      DistortedLibrary.logMessage("DistortedFramebuffer: FRAMEBUFFER INCOMPLETE, "+message+" error="+status);

      GLES30.glDeleteTextures(1, mColorH, 0);

      GLES30.glDeleteTextures(1, mDepthStencilH, 0);

      GLES30.glDeleteFramebuffers(1, mFBOH, 0);

      mFBOH[0]= 0;

      return FAILED_TO_CREATE;

      }

    return CREATED;

    }

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

// Must be called from a thread holding OpenGL Context

  public void delete()

    {

    if( mColorH[0]>0 )

      {

      GLES30.glDeleteTextures(mNumFBOs*mNumColors, mColorH, 0);

      mColorCreated = NOT_CREATED_YET;

      for(int i=0; i<mNumFBOs*mNumColors; i++) mColorH[i] = 0;

      }

    if( mDepthStencilH[0]>0 )

      {

      GLES30.glDeleteTextures(mNumFBOs, mDepthStencilH, 0);

      mDepthStencilCreated = NOT_CREATED_YET;

      for(int i=0; i<mNumFBOs; i++) mDepthStencilH[i] = 0;

      }

    if( mNumFBOs>0 && mFBOH[0]>0 )

      {

      GLES30.glDeleteFramebuffers(mNumFBOs, mFBOH, 0);

      }

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

      {

      mFBOH[i] = 0;

      }

    }

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

// called from onDestroy(); mark OpenGL assets as 'not created'

  public void recreate()

    {

    if( mColorCreated!=DONT_CREATE )

      {

      mColorCreated = NOT_CREATED_YET;

      mColorH[0] = 0;

      }

    if( mDepthStencilCreated!=DONT_CREATE )

      {

      mDepthStencilCreated = NOT_CREATED_YET;

      mDepthStencilH[0] = 0;

      }

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

      {

      mFBOH[i] = 0;

      }

    }

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

  boolean setAsInput(int fbo, int texture)

    {

    if( texture>=0 && texture<mNumColors && fbo>=0 && fbo<mNumFBOs && mColorH[mNumColors*fbo + texture]>0 )

      {

      GLES30.glActiveTexture(GLES30.GL_TEXTURE0);

      GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, mColorH[mNumColors*fbo + texture]);

      return true;

      }

    return false;

    }

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

// create a multi-framebuffer (1 object containing multiple FBOs)

  DistortedFramebuffer(int numfbos, int numcolors, int depthStencil, int type, int storage, int width, int height)

    {

    super(width,height,NOT_CREATED_YET,numfbos,numcolors,depthStencil,NOT_CREATED_YET, type, storage);

    markForCreation();

    }

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

// create SYSTEM or TREE framebuffers (those are just like normal FBOs, just hold information

// that they were autocreated only for the Library's internal purposes (SYSTEM) or for using

// inside a Tree of DistortedNodes (TREE)

// SYSTEM surfaces do not get removed in onDestroy().

  DistortedFramebuffer(int numcolors, int depthStencil, int type, int width, int height)

    {

    this(1,numcolors,depthStencil,type,STORAGE_PRIVATE,width,height);

    }

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

// PUBLIC API

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

/**

 * Create new offscreen Framebuffer with configurable number of COLOR, DEPTH and STENCIL attachments.

 *

 * @param width        Width of all the COLOR attachments.

 * @param height       Height of all the COLOR attachments.

 * @param numcolors    How many COLOR attachments to create?

 * @param depthStencil Add DEPTH or STENCIL attachment?

 *                     Valid values: NO_DEPTH_NO_STENCIL, DEPTH_NO_STENCIL, BOTH_DEPTH_STENCIL.

 */

  @SuppressWarnings("unused")

  public DistortedFramebuffer(int width, int height, int numcolors, int depthStencil)

    {

    this(1,numcolors,depthStencil,TYPE_USER,STORAGE_PRIVATE,width,height);

    }

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

/**

 * Bind the underlying rectangle of pixels as a OpenGL Texture.

 *

 * @param texture The Texture number to bind (and thus read from).

 * @return <code>true</code> if successful.

 */

  public boolean setAsInput(int texture)

    {

    if( texture>=0 && texture<mNumColors && mColorH[texture]>0 )

      {

      GLES30.glActiveTexture(GLES30.GL_TEXTURE0);

      GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, mColorH[2*mCurrFBO+texture]);

      return true;

      }

    return false;

    }

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

  /**

   * Attach the texture'th Texture to COLOR0 attachment.

   *

   * @param texture The Texture number to attach (and subsequently use to render to)

   */

  public void bindForOutput(int texture)

    {

    if( texture>=0 && texture<mNumColors && mColorH[texture]>0 )

      {

      GLES30.glFramebufferTexture2D(GLES30.GL_FRAMEBUFFER, GLES30.GL_COLOR_ATTACHMENT0, GLES30.GL_TEXTURE_2D, mColorH[2*mCurrFBO+texture], 0);

      }

    }

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

/**

 * Enable.disable DEPTH and STENCIL buffers.

 *

 * @param depthStencil Valid values: NO_DEPTH_NO_STENCIL, DEPTH_NO_STENCIL, BOTH_DEPTH_STENCIL.

 */

  public void enableDepthStencil(int depthStencil)

    {

    if( depthStencil != mDepthStencil )

      {

      mDepthStencil = depthStencil;

      if( depthStencil!= NO_DEPTH_NO_STENCIL && mDepthStencilCreated==DONT_CREATE )

        {

        mDepthStencilCreated = NOT_CREATED_YET;

        markForCreation();

        }

      if( depthStencil== NO_DEPTH_NO_STENCIL && mDepthStencilCreated!=DONT_CREATE )

        {

        mDepthStencilCreated = DONT_CREATE;

        markForCreation();

        }

      }

    }

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

/**

 * Return the ID of the Texture (COLOR attachment 0) that's backing this FBO.

 * <p>

 * Catch: this will only work if the library has had time to actually create the texture. Remember

 * that the texture gets created only on first render, thus creating a Texture object and immediately

 * calling this method will return an invalid (negative) result.

 *

 * @return If there was not a single render between creation of the Object and calling this method on

 *         it, return a negative value. Otherwise, return ID of COLOR attachment 0.

 */

  public int getTextureID()

    {

    return mColorH[0];

    }

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

/**

 * Bind one of the underlying FBOs to GL_READ_FRAMEBUFFER.

 * Useful for a subsequent glReadBuffer / glReadPixels.

 *

 * @param fbo which of the underlying FBOs to bind.

 * @return <code>true</code> if successful.

 */

  public boolean setAsReadFramebuffer(int fbo)

    {

    if( fbo>=0 && fbo<mNumFBOs )

      {

      GLES30.glBindFramebuffer(GLES30.GL_READ_FRAMEBUFFER, mFBOH[fbo]);

      return true;

      }

    return false;

    }

  }

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

// 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.main;

import android.opengl.GLES30;

import android.opengl.GLES31;

import java.io.InputStream;

import java.nio.ByteBuffer;

import java.nio.ByteOrder;

import java.nio.FloatBuffer;

import java.nio.IntBuffer;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import org.distorted.library.R;

import org.distorted.library.effect.Effect;

import org.distorted.library.effectqueue.EffectQueue;

import org.distorted.library.effectqueue.EffectQueuePostprocess;

import org.distorted.library.effect.EffectType;

import org.distorted.library.effect.FragmentEffect;

import org.distorted.library.effect.PostprocessEffect;

import org.distorted.library.effect.VertexEffect;

import org.distorted.library.effectqueue.EffectQueueVertex;

import org.distorted.library.mesh.DeferredJobs;

import org.distorted.library.mesh.MeshBase;

import org.distorted.library.message.EffectMessageSender;

import org.distorted.library.program.DistortedProgram;

import org.distorted.library.program.VertexCompilationException;

import org.distorted.library.type.Dynamic;

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

/**

 * A singleton class used to control various global dialog_settings.

 */

public class DistortedLibrary

  {

  /**

   * When creating an instance of a DistortedTexture from another instance, clone the Bitmap that's

   * backing up our DistortedTexture.

   * <p>

   * This way we can have two DistortedTextures, both backed up by the same Bitmap, to which we can

   * apply different effects. Used in the copy constructor.

   */

  public static final int CLONE_SURFACE = 0x1;

  /**

   * When creating an instance of a DistortedEffects from another instance, clone the Matrix Effects.

   * <p>

   * This way we can have two different DistortedEffects sharing the MATRIX queue.

   */

  public static final int CLONE_MATRIX = 0x2;

  /**

   * When creating an instance of a DistortedEffects from another instance, clone the Vertex Effects.

   * <p>

   * This way we can have two different DistortedEffects sharing the VERTEX queue.

   */

  public static final int CLONE_VERTEX  = 0x4;

  /**

   * When creating an instance of a DistortedEffects from another instance, clone the Fragment Effects.

   * <p>

   * This way we can have two different DistortedEffects sharing the FRAGMENT queue.

   */

  public static final int CLONE_FRAGMENT= 0x8;

   /**

   * When creating an instance of a DistortedEffects from another instance, clone the PostProcess Effects.

   * <p>

   * This way we can have two different DistortedEffects sharing the POSTPROCESS queue.

   */

  public static final int CLONE_POSTPROCESS= 0x10;

  /**

   * When creating an instance of a DistortedNode from another instance, clone the children Nodes.

   * <p>

   * This is mainly useful for creating many similar sub-trees and rendering then at different places

   * on the screen with (optionally) different Effects.

   */

  public static final int CLONE_CHILDREN= 0x20;

  /**

   * When creating a DistortedScreen (which needs to have mFBOQueueSize FBOs attached), pass this

   * constant for 'numOfFBOs' and the number of backing FBOs will be taken from 'mFBOQueueSize'

   * (the value of which is most likely unknown at the time of creation of the Screen)

   */

  public static final int WAIT_FOR_FBO_QUEUE_SIZE = -1;

  /**

   * Work around bugs in ARM Mali driver by, instead to a single FBO, rendering to a circular queue

   * of mFBOQueueSize FBOs. (otherwise we sometimes get a 'full pipeline flush' and the end result

   * might be missing part of the Objects)

   * <p>

   * This bug only exists on Mali driver r12. (or more precisely it's there in r12 but fixed in r22)

   * <p>

   * <a href="https://community.arm.com/graphics/f/discussions/10285/opengl-es-3-1-on-mali-t880-flashes">...</a>

   */

  private static int mFBOQueueSize;

  private static int mGLSL;

  private static String mGLSL_VERSION;

  private static boolean mOITCompilationAttempted, mNeedsTransformFeedback;

  private static int mMaxTextureSize         = Integer.MAX_VALUE;

  private static int mMaxNumberOfVerUniforms = Integer.MAX_VALUE;

  private static int mMaxNumberOfFraUniforms = Integer.MAX_VALUE;

  private static boolean mBuggyUBOs;

  private static String mVendor, mVersion, mRenderer;

  private static boolean mFastCompilationTF;

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

  /// MAIN PROGRAM ///

  private static DistortedProgram mMainProgram;

  private static int mMainTextureH;

  private static int mTransformFeedbackH;

  /// NORMAL PROGRAM /////

  private static DistortedProgram mNormalProgram;

  private static int mNormalProjectionH;

  /// MAIN OIT PROGRAM ///

  private static DistortedProgram mMainOITProgram;

  private static int mMainOITTextureH;

  private static int mMainOITSizeH;

  private static int mMainOITNumRecordsH;

  /// BLIT PROGRAM ///

  private static DistortedProgram mBlitProgram;

  private static int mBlitTextureH;

  private static int mBlitDepthH;

  private static final FloatBuffer mQuadPositions;

  /// FULL PROGRAM ///

  private static DistortedProgram mFullProgram;

  static

    {

    float[] positionData= { -0.5f, -0.5f,  -0.5f, 0.5f,  0.5f,-0.5f,  0.5f, 0.5f };

    mQuadPositions = ByteBuffer.allocateDirect(32).order(ByteOrder.nativeOrder()).asFloatBuffer();

    mQuadPositions.put(positionData).position(0);

    }

  /// BLIT DEPTH PROGRAM ///

  private static DistortedProgram mBlitDepthProgram;

  private static int mBlitDepthTextureH;

  private static int mBlitDepthDepthTextureH;

  private static int mBlitDepthTexCorrH;

  /// Program Handles ///

  private static int mMainProgramH, mFullProgramH, mMainOITProgramH;

  /// OIT SSBO BUFFER ///

  private static final int[] mLinkedListSSBO = new int[1];

  private static int[] mAtomicCounter;

  private static int   mCurrBuffer;

  static

    {

    mLinkedListSSBO[0]= -1;

    mCurrBuffer       =  0;

    }

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

  // meaning: allocate 1.0 screenful of places for transparent

  // fragments in the SSBO backing up the OIT render method.

  private static float mBufferSize=1.0f;

  /// OIT CLEAR PROGRAM ///

  private static DistortedProgram mOITClearProgram;

  private static int mOITClearDepthH;

  private static int mOITClearTexCorrH;

  private static int mOITClearSizeH;

  /// OIT BUILD PROGRAM ///

  private static DistortedProgram mOITBuildProgram;

  private static int mOITBuildTextureH;

  private static int mOITBuildDepthTextureH;

  private static int mOITBuildDepthH;

  private static int mOITBuildTexCorrH;

  private static int mOITBuildSizeH;

  private static int mOITBuildNumRecordsH;

  /// OIT COLLAPSE PROGRAM ///

  private static DistortedProgram mOITCollapseProgram;

  private static int mOITCollapseDepthTextureH;

  private static int mOITCollapseDepthH;

  private static int mOITCollapseTexCorrH;

  private static int mOITCollapseSizeH;

  /// OIT RENDER PROGRAM ///

  private static DistortedProgram mOITRenderProgram;

  private static int mOITRenderDepthH;

  private static int mOITRenderTexCorrH;

  private static int mOITRenderSizeH;

  /// END PROGRAMS //////

  /**

   * Every application using the library must implement this interface so that the library can send

   * it exceptions that arise. The exceptions may come at any time, for example the library will

   * compile its OIT problem only on the first attempt to use the OIT

   * Those will mainly be hardware-related: shaders do not compile on particular hardware, the required

   * OpenGL ES 3.0 is not supported, etc.

   * <p>

   * Additionally, the User must be able to provide version of the OpenGL supported by the underlying

   * hardware and InputStreams to given local files.

   */

  public interface LibraryUser

    {

    void distortedException(Exception ex);

    InputStream localFile(int fileID);

    void logMessage(String message);

    }

  private static LibraryUser mUser;

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

// private: hide this from Javadoc

  private DistortedLibrary()

    {

    }

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

  private static void createMainProgram()

    {

    // MAIN PROGRAM ////////////////////////////////////

    final InputStream mainVertStream = mUser.localFile(R.raw.main_vertex_shader);

    final InputStream mainFragStream = mUser.localFile(R.raw.main_fragment_shader);

    int numF = FragmentEffect.getNumEnabled();

    int numV = VertexEffect.getNumEnabled();

    String mainVertHeader= mGLSL_VERSION + ("#define NUM_VERTEX "   + ( numV>0 ? getMax(EffectType.VERTEX  ) : 0 ) + "\n");

    String mainFragHeader= mGLSL_VERSION + ("#define NUM_FRAGMENT " + ( numF>0 ? getMax(EffectType.FRAGMENT) : 0 ) + "\n");

    mainVertHeader += "#define MAX_COMPON " + MeshBase.getMaxEffComponents() + "\n";

    if( MeshBase.getUseCenters() ) mainVertHeader += "#define COMP_CENTERS\n";

    if( mBuggyUBOs )               mainVertHeader += "#define BUGGY_UBOS\n";

    String enabledEffectV= VertexEffect.getGLSL();

    String enabledEffectF= FragmentEffect.getGLSL();

    String[] feedback = { "v_Position", "v_endPosition" };

    try

      {

      mMainProgram = new DistortedProgram(mainVertStream, mainFragStream, mainVertHeader,