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Revision 5ccafcca

Added by Leszek Koltunski over 7 years ago

Separable Box blur fully works now!

View differences:

src/main/java/org/distorted/library/EffectQueuePostprocess.java
77 77 

  		




  78
  78
  
    
  // BLUR effect


  		




  79
  79
  
    
  private static DistortedProgram mBlurProgram;


  		




  80
  
  
    
  private static int mRadiusH,mStepH,mWeightsH,mObjDH,mMVPMatrixH;


  		




  
  80
  
    
  private static int mRadiusH,mOffsetsH,mWeightsH,mObjDH,mMVPMatrixH;


  		




  81
  81
  
    
  private float[] mWeights = new float[MAX_BLUR];


  		




  82
  
  
    

  		




  
  82
  
    
  private float[] mOffsets = new float[MAX_BLUR];


  		




  83
  83
  
    
  // another effect ....


  		




  84
  84
  
    

  		




  85
  85
  
    
///////////////////////////////////////////////////////////////////////////////////////////////////


  		




  ......




  103
  103
  
    

  		




  104
  104
  
    
    int blurProgramH = mBlurProgram.getProgramHandle();


  		




  105
  105
  
    
    mRadiusH    = GLES30.glGetUniformLocation( blurProgramH, "u_Radius");


  		




  106
  
  
    
    mStepH      = GLES30.glGetUniformLocation( blurProgramH, "u_Step");


  		




  
  106
  
    
    mOffsetsH   = GLES30.glGetUniformLocation( blurProgramH, "u_Offsets");


  		




  107
  107
  
    
    mWeightsH   = GLES30.glGetUniformLocation( blurProgramH, "u_Weights");


  		




  108
  108
  
    
    mObjDH      = GLES30.glGetUniformLocation( blurProgramH, "u_objD");


  		




  109
  109
  
    
    mMVPMatrixH = GLES30.glGetUniformLocation( blurProgramH, "u_MVPMatrix");


  		




  ......




  167
  167
  
    
    for(int i=0; i<=radius; i++)


  		




  168
  168
  
    
      {


  		




  169
  169
  
    
      mWeights[i] = 1.0f / (2.0f*radius+1.0f);


  		




  
  170
  
    
      mOffsets[i] = i/h;


  		




  170
  171
  
    
      }


  		




  171
  172
  
    

  		




  172
  173
  
    
    GLES30.glUniform1fv( mWeightsH, radius+1, mWeights,0);


  		




  
  174
  
    
    GLES30.glUniform1fv( mOffsetsH ,radius+1, mOffsets,0);


  		




  173
  175
  
    
    GLES30.glUniform1i( mRadiusH, radius);


  		




  174
  176
  
    
    GLES30.glUniform2f( mObjDH , w, h );


  		




  175
  177
  
    

  		




  ......




  182
  184
  
    
    Matrix.multiplyMM(mMVPMatrix, 0, mBufferFBO.mProjectionMatrix, 0, mTmpMatrix, 0);


  		




  183
  185
  
    

  		




  184
  186
  
    
    // horizontal blur


  		




  185
  
  
    
    GLES30.glUniform1f( mStepH , 1/h );


  		




  
  187
  
    

  		




  186
  188
  
    
    GLES30.glUniformMatrix4fv(mMVPMatrixH, 1, false, mMVPMatrix , 0);


  		




  187
  189
  
    
    GLES30.glVertexAttribPointer(mBlurProgram.mAttribute[0], POSITION_DATA_SIZE, GLES30.GL_FLOAT, false, 0, mQuadPositions);


  		




  188
  190
  
    
    GLES30.glVertexAttribPointer(mBlurProgram.mAttribute[1], TEX_DATA_SIZE     , GLES30.GL_FLOAT, false, 0, mQuadTextureInv);


  		




  ......




  192
  194
  
    
    df.setAsOutput();


  		




  193
  195
  
    
    GLES30.glViewport(0, 0, df.mWidth, df.mHeight);


  		




  194
  196
  
    

  		




  
  197
  
    
    float adjust = h/w;


  		




  
  198
  
    
    for(int i=0; i<=radius; i++) mOffsets[i] *= adjust;


  		




  
  199
  
    

  		




  195
  200
  
    
    // vertical blur


  		




  196
  
  
    
    GLES30.glUniform1f( mStepH , 1/w );


  		




  
  201
  
    
    GLES30.glUniform1fv( mOffsetsH ,radius+1, mOffsets,0);


  		




  197
  202
  
    
    GLES30.glUniformMatrix4fv(mMVPMatrixH, 1, false, mvp , 0);


  		




  198
  203
  
    
    GLES30.glVertexAttribPointer(mBlurProgram.mAttribute[0], POSITION_DATA_SIZE, GLES30.GL_FLOAT, false, 0, mQuadPositions);


  		




  199
  204
  
    
    GLES30.glVertexAttribPointer(mBlurProgram.mAttribute[1], TEX_DATA_SIZE     , GLES30.GL_FLOAT, false, 0, mQuadTextureInv);


  		












  

    
      src/main/res/raw/blur_fragment_shader.glsl
    
  





  21
  21
  
    

  		




  22
  22
  
    
varying vec2 v_TexCoordinate;


  		




  23
  23
  
    
uniform sampler2D u_Texture;


  		




  24
  
  
    
uniform float u_Step;


  		




  
  24
  
    
uniform float u_Offsets[MAX_BLUR];


  		




  25
  25
  
    
uniform float u_Weights[MAX_BLUR];


  		




  26
  26
  
    
uniform int u_Radius;


  		




  27
  27
  
    

  		




  ......




  29
  29
  
    

  		




  30
  30
  
    
void main()


  		




  31
  31
  
    
  {


  		




  32
  
  
    
  float lCoord = v_TexCoordinate.x;


  		




  33
  
  
    
  float rCoord = lCoord;


  		




  34
  
  
    
  float yCoord = v_TexCoordinate.y;


  		




  35
  
  
    

  		




  36
  
  
    
  vec4  pixel  = texture2D(u_Texture,vec2(lCoord,yCoord)) * u_Weights[0];


  		




  
  32
  
    
  vec4 pixel= texture2D(u_Texture,v_TexCoordinate) * u_Weights[0];


  		




  37
  33
  
    

  		




  38
  34
  
    
  for (int x = 1; x <= u_Radius; x+=1)


  		




  39
  35
  
    
    {


  		




  40
  
  
    
    rCoord+= u_Step;


  		




  41
  
  
    
    lCoord-= u_Step;


  		




  42
  
  
    
    pixel += ( texture2D(u_Texture,vec2(rCoord,yCoord)) +


  		




  43
  
  
    
               texture2D(u_Texture,vec2(lCoord,yCoord)) ) * u_Weights[x];


  		




  
  36
  
    
    pixel += ( texture2D(u_Texture,vec2(v_TexCoordinate.x+u_Offsets[x],v_TexCoordinate.y)) +


  		




  
  37
  
    
               texture2D(u_Texture,vec2(v_TexCoordinate.x-u_Offsets[x],v_TexCoordinate.y)) ) * u_Weights[x];


  		




  44
  38
  
    
    }


  		




  45
  39
  
    

  		




  46
  40
  
    
  gl_FragColor = pixel;


  		












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