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4c1dd6e9
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Leszek Koltunski
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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.library;
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c90b9e01
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Leszek Koltunski
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import android.content.res.Resources;
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194ab46f
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Leszek Koltunski
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import android.opengl.GLES30;
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1c67457f
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Leszek Koltunski
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import android.opengl.Matrix;
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4c1dd6e9
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Leszek Koltunski
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import org.distorted.library.message.EffectMessage;
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8fa96e69
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Leszek Koltunski
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import org.distorted.library.program.DistortedProgram;
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c90b9e01
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Leszek Koltunski
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import org.distorted.library.program.FragmentCompilationException;
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import org.distorted.library.program.FragmentUniformsException;
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import org.distorted.library.program.LinkingException;
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import org.distorted.library.program.VertexCompilationException;
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import org.distorted.library.program.VertexUniformsException;
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4c1dd6e9
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Leszek Koltunski
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import org.distorted.library.type.Data1D;
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import org.distorted.library.type.Dynamic1D;
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import org.distorted.library.type.Static1D;
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c90b9e01
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Leszek Koltunski
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import java.io.InputStream;
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8fa96e69
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Leszek Koltunski
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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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4c1dd6e9
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Leszek Koltunski
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///////////////////////////////////////////////////////////////////////////////////////////////////
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class EffectQueuePostprocess extends EffectQueue
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{
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9d5bb851
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Leszek Koltunski
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private static final int POS_DATA_SIZE= 2; // Post Program: size of the position data in elements
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private static final int TEX_DATA_SIZE= 2; // Post Program: size of the texture coordinate data in elements.
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8fa96e69
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Leszek Koltunski
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667a1ad9
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Leszek Koltunski
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private static final int NUM_UNIFORMS = 4;
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4c1dd6e9
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Leszek Koltunski
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private static final int NUM_CACHE = 0;
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private static final int INDEX = EffectTypes.POSTPROCESS.ordinal();
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1c67457f
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Leszek Koltunski
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private static final FloatBuffer mQuadPositions, mQuadTextureNor, mQuadTextureInv;
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8fa96e69
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Leszek Koltunski
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static
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{
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667a1ad9
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Leszek Koltunski
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int dataLength = 4;
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int bytes_per_float = 4;
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8fa96e69
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Leszek Koltunski
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1c67457f
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Leszek Koltunski
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float[] position = { -0.5f, -0.5f, -0.5f, 0.5f, 0.5f,-0.5f, 0.5f, 0.5f };
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float[] textureNor= { 0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f };
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float[] textureInv= { 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f };
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8fa96e69
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Leszek Koltunski
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9d5bb851
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Leszek Koltunski
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mQuadPositions = ByteBuffer.allocateDirect(POS_DATA_SIZE*dataLength*bytes_per_float).order(ByteOrder.nativeOrder()).asFloatBuffer();
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1c67457f
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Leszek Koltunski
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mQuadPositions.put(position).position(0);
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9d5bb851
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Leszek Koltunski
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mQuadTextureNor= ByteBuffer.allocateDirect(TEX_DATA_SIZE*dataLength*bytes_per_float).order(ByteOrder.nativeOrder()).asFloatBuffer();
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1c67457f
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Leszek Koltunski
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mQuadTextureNor.put(textureNor).position(0);
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9d5bb851
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Leszek Koltunski
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mQuadTextureInv= ByteBuffer.allocateDirect(TEX_DATA_SIZE*dataLength*bytes_per_float).order(ByteOrder.nativeOrder()).asFloatBuffer();
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1c67457f
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Leszek Koltunski
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mQuadTextureInv.put(textureInv).position(0);
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8fa96e69
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Leszek Koltunski
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}
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4c1dd6e9
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Leszek Koltunski
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cdd5e827
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Leszek Koltunski
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private static DistortedFramebuffer mBufferFBO = new DistortedFramebuffer(1,1,true);
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1c67457f
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Leszek Koltunski
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private static float[] mMVPMatrix = new float[16];
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private static float[] mTmpMatrix = new float[16];
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0d81d0fb
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Leszek Koltunski
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// BLUR effect
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ed841982
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Leszek Koltunski
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private static final float GAUSSIAN[] = // G(0.00), G(0.03), G(0.06), ..., G(3.00), 0
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{ // where G(x)= (1/(sqrt(2*PI))) * e^(-(x^2)/2). The last 0 terminates.
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0.398948f, 0.398769f, 0.398231f, 0.397336f, 0.396086f, 0.394485f, 0.392537f, 0.390247f, 0.387622f, 0.384668f,
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0.381393f, 0.377806f, 0.373916f, 0.369733f, 0.365268f, 0.360532f, 0.355538f, 0.350297f, 0.344823f, 0.339129f,
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0.333229f, 0.327138f, 0.320868f, 0.314436f, 0.307856f, 0.301142f, 0.294309f, 0.287373f, 0.280348f, 0.273248f,
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0.266089f, 0.258884f, 0.251648f, 0.244394f, 0.237135f, 0.229886f, 0.222657f, 0.215461f, 0.208311f, 0.201217f,
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0.194189f, 0.187238f, 0.180374f, 0.173605f, 0.166940f, 0.160386f, 0.153951f, 0.147641f, 0.141462f, 0.135420f,
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0.129520f, 0.123765f, 0.118159f, 0.112706f, 0.107408f, 0.102266f, 0.097284f, 0.092461f, 0.087797f, 0.083294f,
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0.078951f, 0.074767f, 0.070741f, 0.066872f, 0.063158f, 0.059596f, 0.056184f, 0.052920f, 0.049801f, 0.046823f,
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0.043984f, 0.041280f, 0.038707f, 0.036262f, 0.033941f, 0.031740f, 0.029655f, 0.027682f, 0.025817f, 0.024056f,
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0.022395f, 0.020830f, 0.019357f, 0.017971f, 0.016670f, 0.015450f, 0.014305f, 0.013234f, 0.012232f, 0.011295f,
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0.010421f, 0.009606f, 0.008847f, 0.008140f, 0.007483f, 0.006873f, 0.006307f, 0.005782f, 0.005296f, 0.004847f,
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0.004432f, 0.000000f
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};
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private static final int NUM_GAUSSIAN = GAUSSIAN.length-2;
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// Support blurs consisting of the present pixel and up to MAX_BLUR pixels in each direction
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private static final int MAX_BLUR = 50;
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464e53fa
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Leszek Koltunski
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// The (fixed-function-sampled) Gaussian Blur kernels are of the size k0=1, k1=2, k2=2, k3=3, k4=3, k5=4, k6=4,...
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ed841982
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Leszek Koltunski
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// i.e. k(i)=floor((i+3)/2). (the 'i' in k(i) means 'blur taking into account the present pixel and 'i' pixels
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// in all 4 directions)
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// We need room for MAX_BLUR of them, and sum(i=0...N, floor((i+3)/2)) = N + floor(N*N/4)
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private static float[] weightsCache = new float[MAX_BLUR + MAX_BLUR*MAX_BLUR/4];
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private static float[] offsetsCache = new float[MAX_BLUR + MAX_BLUR*MAX_BLUR/4];
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0d81d0fb
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Leszek Koltunski
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private static DistortedProgram mBlurProgram;
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5ccafcca
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Leszek Koltunski
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private static int mRadiusH,mOffsetsH,mWeightsH,mObjDH,mMVPMatrixH;
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ed841982
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Leszek Koltunski
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private static float[] mWeights = new float[MAX_BLUR];
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private static float[] mOffsets = new float[MAX_BLUR];
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0d81d0fb
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Leszek Koltunski
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// another effect ....
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4c1dd6e9
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Leszek Koltunski
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///////////////////////////////////////////////////////////////////////////////////////////////////
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EffectQueuePostprocess(long id)
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{
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super(id,NUM_UNIFORMS,NUM_CACHE,INDEX );
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}
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c90b9e01
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Leszek Koltunski
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///////////////////////////////////////////////////////////////////////////////////////////////////
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static void createProgram(Resources resources)
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throws FragmentCompilationException,VertexCompilationException,VertexUniformsException,FragmentUniformsException,LinkingException
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{
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f1d5ea12
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Leszek Koltunski
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final InputStream postVertexStream = resources.openRawResource(R.raw.blur_vertex_shader);
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final InputStream postFragmentStream = resources.openRawResource(R.raw.blur_fragment_shader);
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c90b9e01
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Leszek Koltunski
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0d81d0fb
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Leszek Koltunski
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mBlurProgram = new DistortedProgram(postVertexStream,postFragmentStream,
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"#version 100\n",
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"#version 100\n#define MAX_BLUR "+MAX_BLUR);
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c90b9e01
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Leszek Koltunski
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f1d5ea12
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Leszek Koltunski
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int blurProgramH = mBlurProgram.getProgramHandle();
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mRadiusH = GLES30.glGetUniformLocation( blurProgramH, "u_Radius");
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5ccafcca
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Leszek Koltunski
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mOffsetsH = GLES30.glGetUniformLocation( blurProgramH, "u_Offsets");
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0d81d0fb
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Leszek Koltunski
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mWeightsH = GLES30.glGetUniformLocation( blurProgramH, "u_Weights");
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f1d5ea12
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Leszek Koltunski
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mObjDH = GLES30.glGetUniformLocation( blurProgramH, "u_objD");
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mMVPMatrixH = GLES30.glGetUniformLocation( blurProgramH, "u_MVPMatrix");
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4c1dd6e9
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Leszek Koltunski
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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synchronized void compute(long currTime)
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{
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if( currTime==mTime ) return;
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if( mTime==0 ) mTime = currTime;
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long step = (currTime-mTime);
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for(int i=0; i<mNumEffects; i++)
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{
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if( mInter[0][i]!=null && mInter[0][i].interpolateMain(mUniforms ,NUM_UNIFORMS*i, mCurrentDuration[i], step) )
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{
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for(int j=0; j<mNumListeners; j++)
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EffectMessageSender.newMessage( mListeners.elementAt(j),
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EffectMessage.EFFECT_FINISHED,
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(mID[i]<<EffectTypes.LENGTH)+EffectTypes.POSTPROCESS.type,
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mName[i],
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mObjectID);
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if( EffectNames.isUnity(mName[i], mUniforms, NUM_UNIFORMS*i) )
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{
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remove(i);
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i--;
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continue;
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}
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else mInter[0][i] = null;
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}
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mCurrentDuration[i] += step;
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}
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mTime = currTime;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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protected void moveEffect(int index)
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{
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mUniforms[NUM_UNIFORMS*index ] = mUniforms[NUM_UNIFORMS*(index+1) ];
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mUniforms[NUM_UNIFORMS*index+1] = mUniforms[NUM_UNIFORMS*(index+1)+1];
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mUniforms[NUM_UNIFORMS*index+2] = mUniforms[NUM_UNIFORMS*(index+1)+2];
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667a1ad9
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Leszek Koltunski
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mUniforms[NUM_UNIFORMS*index+3] = mUniforms[NUM_UNIFORMS*(index+1)+3];
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4c1dd6e9
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Leszek Koltunski
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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182 |
464e53fa
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Leszek Koltunski
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// This implements the 'Better separable implementation using GPU fixed function sampling' from
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// https://software.intel.com/en-us/blogs/2014/07/15/an-investigation-of-fast-real-time-gpu-based-image-blur-algorithms
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184 |
4c1dd6e9
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Leszek Koltunski
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185 |
ed841982
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Leszek Koltunski
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private void computeGaussianKernel(int radius)
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186 |
4c1dd6e9
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Leszek Koltunski
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{
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187 |
ed841982
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Leszek Koltunski
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int offset = radius + radius*radius/4;
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188 |
0d81d0fb
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Leszek Koltunski
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ed841982
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Leszek Koltunski
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if( weightsCache[offset]==0.0f )
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a225e5aa
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Leszek Koltunski
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{
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ed841982
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Leszek Koltunski
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float z, x= 0.0f, P= (float)NUM_GAUSSIAN / (radius>3 ? radius:3);
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mWeights[0] = GAUSSIAN[0];
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float sum = GAUSSIAN[0];
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int j;
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9d5bb851
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Leszek Koltunski
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ed841982
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Leszek Koltunski
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for(int i=1; i<=radius; i++)
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{
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x += P;
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j = (int)x;
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z = x-j;
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201 |
9d5bb851
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Leszek Koltunski
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ed841982
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Leszek Koltunski
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mWeights[i] = (1-z)*GAUSSIAN[j] + z*GAUSSIAN[j+1];
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sum += 2*mWeights[i];
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}
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205 |
9d5bb851
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Leszek Koltunski
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206 |
ed841982
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Leszek Koltunski
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for(int i=0; i<=radius; i++) mWeights[i] /= sum;
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207 |
a225e5aa
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Leszek Koltunski
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208 |
ed841982
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Leszek Koltunski
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int numloops = radius/2;
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weightsCache[offset] = mWeights[0];
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offsetsCache[offset] = 0.0f;
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for(int i=0; i<numloops; i++)
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{
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offsetsCache[offset+i+1] = mWeights[2*i+1]*(2*i+1) + mWeights[2*i+2]*(2*i+2);
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weightsCache[offset+i+1] = mWeights[2*i+1] + mWeights[2*i+2];
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offsetsCache[offset+i+1]/= weightsCache[offset+i+1];
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}
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if( radius%2 == 1 )
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{
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int index = offset + radius/2 +1;
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offsetsCache[index]=mOffsets[radius];
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weightsCache[index]=mWeights[radius];
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}
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}
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226 |
9d5bb851
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Leszek Koltunski
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// w,h - width and height of the input texture. MVP - Model-View-Projection matrix to apply to the
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// texture; df - output FBO.
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232 |
c5369f1b
|
leszek
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synchronized void render(float w, float h, float[] mvp, DistortedOutputSurface surface)
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233 |
9d5bb851
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Leszek Koltunski
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{
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mBlurProgram.useProgram();
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236 |
ed841982
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Leszek Koltunski
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int radius = (int)mUniforms[0];
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if( radius>=MAX_BLUR ) radius = MAX_BLUR-1;
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computeGaussianKernel(radius);
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239 |
93dca704
|
Leszek Koltunski
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240 |
ed841982
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Leszek Koltunski
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int offset = radius + radius*radius/4;
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radius = (radius+1)/2;
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for(int i=0; i<=radius; i++) mOffsets[i] = offsetsCache[offset+i]/h;
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243 |
9d5bb851
|
Leszek Koltunski
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244 |
ed841982
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Leszek Koltunski
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GLES30.glUniform1fv( mWeightsH, radius+1, weightsCache,offset);
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245 |
0d81d0fb
|
Leszek Koltunski
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GLES30.glUniform1i( mRadiusH, radius);
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246 |
194ab46f
|
Leszek Koltunski
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GLES30.glUniform2f( mObjDH , w, h );
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247 |
4c1dd6e9
|
Leszek Koltunski
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248 |
1c67457f
|
Leszek Koltunski
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mBufferFBO.resizeFast( (int)w, (int)h);
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249 |
0d81d0fb
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Leszek Koltunski
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mBufferFBO.setAsOutput();
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250 |
cdd5e827
|
Leszek Koltunski
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GLES30.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
|
251 |
|
|
GLES30.glClear( GLES30.GL_DEPTH_BUFFER_BIT | GLES30.GL_COLOR_BUFFER_BIT);
|
252 |
1c67457f
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Leszek Koltunski
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GLES30.glViewport(0, 0, (int)w, (int)h);
|
253 |
|
|
|
254 |
|
|
Matrix.setIdentityM(mTmpMatrix, 0);
|
255 |
af4cc5db
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Leszek Koltunski
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Matrix.translateM(mTmpMatrix, 0, 0, 0, -mBufferFBO.mDistance);
|
256 |
|
|
Matrix.multiplyMM(mMVPMatrix, 0, mBufferFBO.mProjectionMatrix, 0, mTmpMatrix, 0);
|
257 |
0d81d0fb
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Leszek Koltunski
|
|
258 |
|
|
// horizontal blur
|
259 |
9d5bb851
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Leszek Koltunski
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GLES30.glUniform1fv( mOffsetsH ,radius+1, mOffsets,0);
|
260 |
1c67457f
|
Leszek Koltunski
|
GLES30.glUniformMatrix4fv(mMVPMatrixH, 1, false, mMVPMatrix , 0);
|
261 |
9d5bb851
|
Leszek Koltunski
|
GLES30.glVertexAttribPointer(mBlurProgram.mAttribute[0], POS_DATA_SIZE, GLES30.GL_FLOAT, false, 0, mQuadPositions);
|
262 |
|
|
GLES30.glVertexAttribPointer(mBlurProgram.mAttribute[1], TEX_DATA_SIZE, GLES30.GL_FLOAT, false, 0, mQuadTextureInv);
|
263 |
0d81d0fb
|
Leszek Koltunski
|
GLES30.glDrawArrays(GLES30.GL_TRIANGLE_STRIP, 0, 4);
|
264 |
|
|
|
265 |
|
|
mBufferFBO.setAsInput();
|
266 |
c5369f1b
|
leszek
|
surface.setAsOutput();
|
267 |
|
|
|
268 |
af4cc5db
|
Leszek Koltunski
|
GLES30.glViewport(0, 0, surface.mWidth, surface.mHeight);
|
269 |
0d81d0fb
|
Leszek Koltunski
|
|
270 |
ed841982
|
Leszek Koltunski
|
for(int i=0; i<=radius; i++) mOffsets[i] = offsetsCache[offset+i]/w;
|
271 |
5ccafcca
|
Leszek Koltunski
|
|
272 |
0d81d0fb
|
Leszek Koltunski
|
// vertical blur
|
273 |
5ccafcca
|
Leszek Koltunski
|
GLES30.glUniform1fv( mOffsetsH ,radius+1, mOffsets,0);
|
274 |
1c67457f
|
Leszek Koltunski
|
GLES30.glUniformMatrix4fv(mMVPMatrixH, 1, false, mvp , 0);
|
275 |
9d5bb851
|
Leszek Koltunski
|
GLES30.glVertexAttribPointer(mBlurProgram.mAttribute[0], POS_DATA_SIZE, GLES30.GL_FLOAT, false, 0, mQuadPositions);
|
276 |
|
|
GLES30.glVertexAttribPointer(mBlurProgram.mAttribute[1], TEX_DATA_SIZE, GLES30.GL_FLOAT, false, 0, mQuadTextureInv);
|
277 |
194ab46f
|
Leszek Koltunski
|
GLES30.glDrawArrays(GLES30.GL_TRIANGLE_STRIP, 0, 4);
|
278 |
d6e94c84
|
Leszek Koltunski
|
}
|
279 |
|
|
|
280 |
4c1dd6e9
|
Leszek Koltunski
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
281 |
|
|
// blur
|
282 |
|
|
|
283 |
85cbbc5e
|
Leszek Koltunski
|
synchronized long add(EffectNames eln, Data1D degree)
|
284 |
4c1dd6e9
|
Leszek Koltunski
|
{
|
285 |
|
|
if( mMax[INDEX]>mNumEffects )
|
286 |
|
|
{
|
287 |
|
|
if( degree instanceof Dynamic1D)
|
288 |
|
|
{
|
289 |
|
|
mInter[0][mNumEffects] = (Dynamic1D)degree;
|
290 |
|
|
}
|
291 |
|
|
else if( degree instanceof Static1D)
|
292 |
|
|
{
|
293 |
|
|
mInter[0][mNumEffects] = null;
|
294 |
|
|
mUniforms[NUM_UNIFORMS*mNumEffects] = ((Static1D)degree).getX();
|
295 |
|
|
}
|
296 |
|
|
else return -1;
|
297 |
|
|
|
298 |
85cbbc5e
|
Leszek Koltunski
|
mInter[1][mNumEffects] = null;
|
299 |
|
|
mInter[2][mNumEffects] = null;
|
300 |
4c1dd6e9
|
Leszek Koltunski
|
|
301 |
|
|
return addBase(eln);
|
302 |
|
|
}
|
303 |
|
|
|
304 |
|
|
return -1;
|
305 |
|
|
}
|
306 |
|
|
}
|