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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.examples.mali;
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import android.opengl.GLES31;
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import android.opengl.GLSurfaceView;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.nio.FloatBuffer;
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import javax.microedition.khronos.egl.EGLConfig;
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import javax.microedition.khronos.opengles.GL10;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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class MaliRenderer implements GLSurfaceView.Renderer
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{
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private int mWidth, mHeight;
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private static int[] mSSBO = new int[1];
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private static int mProgramHandle,mSizeH,mPosH;
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private static final FloatBuffer mQuadPositions;
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static
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{
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mSSBO[0] = -1;
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float[] positionData= { -0.5f, -0.5f, -0.5f, 0.5f, 0.5f,-0.5f, 0.5f, 0.5f };
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mQuadPositions = ByteBuffer.allocateDirect(32).order(ByteOrder.nativeOrder()).asFloatBuffer();
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mQuadPositions.put(positionData).position(0);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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MaliRenderer(GLSurfaceView v)
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{
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public void onDrawFrame(GL10 glUnused)
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{
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GLES31.glBindFramebuffer(GLES31.GL_FRAMEBUFFER, 0);
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GLES31.glUseProgram(mProgramHandle);
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GLES31.glEnableVertexAttribArray(mPosH);
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GLES31.glViewport(0, 0, mWidth, mHeight );
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GLES31.glUniform2ui(mSizeH, mWidth, mHeight);
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GLES31.glVertexAttribPointer(mPosH, 2, GLES31.GL_FLOAT, false, 0, mQuadPositions);
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GLES31.glDrawArrays(GLES31.GL_TRIANGLE_STRIP, 0, 4);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public void onSurfaceCreated(GL10 glUnused, EGLConfig config)
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{
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final String vertSource =
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"#version 310 es \n" +
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"precision highp float; \n" +
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"precision highp int; \n" +
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"in vec2 a_Position; \n" +
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"out vec2 v_Pixel; \n" +
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"uniform uvec2 u_Size; \n" +
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"void main() \n" +
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"{ \n" +
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"v_Pixel = (a_Position + 0.5) * vec2(u_Size); \n" +
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"gl_Position = vec4(2.0*a_Position,1.0,1.0); \n" +
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"} ";
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final String fragSource =
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"#version 310 es \n" +
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"precision highp float; \n" +
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"precision highp int; \n" +
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"out vec4 fragColor; \n" +
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"in vec2 v_Pixel; \n" +
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"uniform uvec2 u_Size; \n" +
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"layout (std430,binding=1) buffer linkedlist \n" +
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" { \n" +
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" uint u_Records[]; \n" +
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" }; \n" +
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"void main() \n" +
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" { \n" +
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" uint index= uint(v_Pixel.x) + uint(v_Pixel.y) * u_Size.x; \n" +
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" uint sum = 0u; \n" +
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" if( index>=1u ) \n" +
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" { \n" +
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" //for(uint i=index; i>=index-1u; i--) sum += u_Records[i]; \n" +
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" sum += u_Records[index]; \n" +
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" sum += u_Records[index-1u]; \n" +
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" } \n" +
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" u_Records[index] = sum; \n" +
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" fragColor = vec4(0.0,1.0,0.0,1.0); \n" +
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" }";
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int vertHandle = GLES31.glCreateShader(GLES31.GL_VERTEX_SHADER);
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GLES31.glShaderSource(vertHandle, vertSource);
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GLES31.glCompileShader(vertHandle);
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final int[] compileStatus = new int[1];
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GLES31.glGetShaderiv(vertHandle, GLES31.GL_COMPILE_STATUS, compileStatus, 0);
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if (compileStatus[0] != GLES31.GL_TRUE)
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{
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String error = GLES31.glGetShaderInfoLog(vertHandle);
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android.util.Log.e("Program", "error compiling vert :" + error);
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GLES31.glDeleteShader(vertHandle);
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}
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int fragHandle = GLES31.glCreateShader(GLES31.GL_FRAGMENT_SHADER);
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GLES31.glShaderSource(fragHandle, fragSource);
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GLES31.glCompileShader(fragHandle);
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GLES31.glGetShaderiv(fragHandle, GLES31.GL_COMPILE_STATUS, compileStatus, 0);
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if (compileStatus[0] != GLES31.GL_TRUE)
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{
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String error = GLES31.glGetShaderInfoLog(fragHandle);
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android.util.Log.e("Program", "error compiling frag :" + error);
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GLES31.glDeleteShader(fragHandle);
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}
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mProgramHandle = GLES31.glCreateProgram();
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if (mProgramHandle != 0)
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{
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GLES31.glAttachShader(mProgramHandle, vertHandle);
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GLES31.glAttachShader(mProgramHandle, fragHandle);
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GLES31.glBindAttribLocation(mProgramHandle, 0, "a_Position");
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GLES31.glLinkProgram(mProgramHandle);
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final int[] linkStatus = new int[1];
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GLES31.glGetProgramiv(mProgramHandle, GLES31.GL_LINK_STATUS, linkStatus, 0);
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if (linkStatus[0] != GLES31.GL_TRUE)
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{
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String error = GLES31.glGetProgramInfoLog(mProgramHandle);
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GLES31.glDeleteProgram(mProgramHandle);
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android.util.Log.e("Program", "error linking :" + error);
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}
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}
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mPosH = GLES31.glGetAttribLocation ( mProgramHandle, "a_Position");
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mSizeH= GLES31.glGetUniformLocation( mProgramHandle, "u_Size");
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if( mSSBO[0]<0 )
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{
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GLES31.glGenBuffers(1,mSSBO,0);
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GLES31.glBindBuffer(GLES31.GL_SHADER_STORAGE_BUFFER, mSSBO[0]);
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GLES31.glBufferData(GLES31.GL_SHADER_STORAGE_BUFFER, (1<<23) , null, GLES31.GL_DYNAMIC_READ|GLES31.GL_DYNAMIC_DRAW);
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GLES31.glBindBufferBase(GLES31.GL_SHADER_STORAGE_BUFFER, 1, mSSBO[0]);
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GLES31.glBindBuffer(GLES31.GL_SHADER_STORAGE_BUFFER, 0);
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public void onSurfaceChanged(GL10 glUnused, int width, int height)
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{
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mWidth = width;
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mHeight= height;
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}
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}
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