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.examples.mali;

import android.app.Activity;

import android.os.Bundle;

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

public class MaliActivity extends Activity

{

    private MaliSurfaceView mView;

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

    @Override

    protected void onCreate(Bundle savedState) 

      {

      super.onCreate(savedState);

      mView = new MaliSurfaceView(this);

      setContentView(mView);

      }

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

    @Override

    protected void onPause() 

      {

      mView.onPause();

      super.onPause();

      }

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

    @Override

    protected void onResume() 

      {

      super.onResume();

      mView.onResume();

      }

}

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

// 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.examples.mali;

import android.opengl.GLES31;

import android.opengl.GLSurfaceView;

import java.nio.ByteBuffer;

import java.nio.ByteOrder;

import java.nio.FloatBuffer;

import javax.microedition.khronos.egl.EGLConfig;

import javax.microedition.khronos.opengles.GL10;

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

class MaliRenderer implements GLSurfaceView.Renderer

{

    private int mWidth, mHeight;

    private static int[] mSSBO = new int[1];

    private static int mProgramHandle,mSizeH,mPosH;

    private static final FloatBuffer mQuadPositions;

    static

      {

      mSSBO[0] = -1;

      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);

      }

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

    MaliRenderer(GLSurfaceView v)

      {

      }

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

    public void onDrawFrame(GL10 glUnused) 

      {

      GLES31.glBindFramebuffer(GLES31.GL_FRAMEBUFFER, 0);

      GLES31.glUseProgram(mProgramHandle);

      GLES31.glEnableVertexAttribArray(mPosH);

      GLES31.glViewport(0, 0, mWidth, mHeight );

      GLES31.glUniform2ui(mSizeH, mWidth, mHeight);

      GLES31.glVertexAttribPointer(mPosH, 2, GLES31.GL_FLOAT, false, 0, mQuadPositions);

      GLES31.glDrawArrays(GLES31.GL_TRIANGLE_STRIP, 0, 4);

      }

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

    public void onSurfaceCreated(GL10 glUnused, EGLConfig config) 

      {

      final String vertSource =

      "#version 310 es                                      \n" +

      "precision highp float;                               \n" +

      "precision highp int;                                 \n" +

      "in vec2 a_Position;                                  \n" +

      "out vec2 v_Pixel;                                    \n" +

      "uniform uvec2 u_Size;                                \n" +

      "void main()                                          \n" +

      "{                                                    \n" +

      "v_Pixel         = (a_Position + 0.5) * vec2(u_Size); \n" +

      "gl_Position     = vec4(2.0*a_Position,1.0,1.0);      \n" +

      "} ";

      final String fragSource =

      "#version 310 es                                      \n" +

      "precision highp float;                               \n" +

      "precision highp int;                                 \n" +

      "out vec4 fragColor;                                  \n" +

      "in vec2 v_Pixel;                                     \n" +

      "uniform uvec2 u_Size;                                \n" +

      "layout (std430,binding=1) buffer linkedlist          \n" +

      " {                                                   \n" +

      " uint u_Records[];                                   \n" +

      " };                                                  \n" +

      "void main()                                                 \n" +

      " {                                                          \n" +

      " uint index= uint(v_Pixel.x) + uint(v_Pixel.y) * u_Size.x;  \n" +

      " uint sum = 0u;                                             \n" +

      " if( index>=1u )                                            \n" +

      "   {                                                        \n" +

      "   //for(uint i=index; i>=index-1u; i--) sum += u_Records[i]; \n" +

      "   sum += u_Records[index];                               \n" +

      "   sum += u_Records[index-1u];                            \n" +

      "   }                                                        \n" +

      " u_Records[index] = sum;                                    \n" +

      " fragColor = vec4(0.0,1.0,0.0,1.0);                         \n" +

      " }";

      int vertHandle = GLES31.glCreateShader(GLES31.GL_VERTEX_SHADER);

      GLES31.glShaderSource(vertHandle, vertSource);

      GLES31.glCompileShader(vertHandle);

      final int[] compileStatus = new int[1];

      GLES31.glGetShaderiv(vertHandle, GLES31.GL_COMPILE_STATUS, compileStatus, 0);

      if (compileStatus[0] != GLES31.GL_TRUE)

        {

        String error = GLES31.glGetShaderInfoLog(vertHandle);

        android.util.Log.e("Program", "error compiling vert :" + error);

        GLES31.glDeleteShader(vertHandle);

        }

      int fragHandle = GLES31.glCreateShader(GLES31.GL_FRAGMENT_SHADER);

      GLES31.glShaderSource(fragHandle, fragSource);

      GLES31.glCompileShader(fragHandle);

      GLES31.glGetShaderiv(fragHandle, GLES31.GL_COMPILE_STATUS, compileStatus, 0);

      if (compileStatus[0] != GLES31.GL_TRUE)

        {

        String error = GLES31.glGetShaderInfoLog(fragHandle);

        android.util.Log.e("Program", "error compiling frag :" + error);

        GLES31.glDeleteShader(fragHandle);

        }

      mProgramHandle = GLES31.glCreateProgram();

      if (mProgramHandle != 0)

        {

        GLES31.glAttachShader(mProgramHandle, vertHandle);

        GLES31.glAttachShader(mProgramHandle, fragHandle);

        GLES31.glBindAttribLocation(mProgramHandle, 0, "a_Position");

        GLES31.glLinkProgram(mProgramHandle);

        final int[] linkStatus = new int[1];

        GLES31.glGetProgramiv(mProgramHandle, GLES31.GL_LINK_STATUS, linkStatus, 0);

        if (linkStatus[0] != GLES31.GL_TRUE)

          {

          String error = GLES31.glGetProgramInfoLog(mProgramHandle);

          GLES31.glDeleteProgram(mProgramHandle);

          android.util.Log.e("Program", "error linking :" + error);

          }

        }

      mPosH = GLES31.glGetAttribLocation ( mProgramHandle, "a_Position");

      mSizeH= GLES31.glGetUniformLocation( mProgramHandle, "u_Size");

      if( mSSBO[0]<0 )

        {

        GLES31.glGenBuffers(1,mSSBO,0);

        GLES31.glBindBuffer(GLES31.GL_SHADER_STORAGE_BUFFER, mSSBO[0]);

        GLES31.glBufferData(GLES31.GL_SHADER_STORAGE_BUFFER, (1<<23) , null, GLES31.GL_DYNAMIC_READ|GLES31.GL_DYNAMIC_DRAW);

        GLES31.glBindBufferBase(GLES31.GL_SHADER_STORAGE_BUFFER, 1, mSSBO[0]);

        GLES31.glBindBuffer(GLES31.GL_SHADER_STORAGE_BUFFER, 0);

        }

      }

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

    public void onSurfaceChanged(GL10 glUnused, int width, int height)

      {

      mWidth = width;

      mHeight= height;

      }

}

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

// 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.examples.mali;

import android.content.Context;

import android.opengl.GLSurfaceView;

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

class MaliSurfaceView extends GLSurfaceView

{

    public MaliSurfaceView(Context context)

      {

      super(context);

      setEGLContextClientVersion(3);

      setRenderer(new MaliRenderer(this));

      }

}