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Revision 7cf57d72

Added by Leszek Koltunski about 7 years ago

This version appears to be fully working on Nexus 5X (it transfers back all the vertices and, if there are no vertex effects, the vertices transferred back are identical to the ones passed).

This however crashes with GL_INVALID_OPERATION during glDrawArrays() when run on Nexus 4.

View differences:

src/main/java/org/distorted/library/DistortedEffects.java
310 310 
    GLES30.glBindBuffer(GLES30.GL_ARRAY_BUFFER, mesh.mTexVBO[0]);
311 311 
    GLES30.glVertexAttribPointer(mMainProgram.mAttribute[2], MeshObject.TEX_DATA_SIZE     , GLES30.GL_FLOAT, false, 0, 0);
312 312 

  		




  313
  
  
    
    //GLES30.glBindBufferBase(GLES30.GL_TRANSFORM_FEEDBACK_BUFFER, 0, mesh.mPosTBO[0]);


  		




  
  313
  
    
    GLES30.glBindBufferBase(GLES30.GL_TRANSFORM_FEEDBACK_BUFFER, 0, mesh.mPosTBO[0]);


  		




  314
  314
  
    

  		




  315
  
  
    
//    GLES30.glBeginTransformFeedback(GLES30.GL_TRIANGLES);


  		




  
  315
  
    
    GLES30.glBeginTransformFeedback(GLES30.GL_TRIANGLES);


  		




  316
  316
  
    
    GLES30.glDrawArrays(GLES30.GL_TRIANGLE_STRIP, 0, mesh.dataLength);


  		




  317
  
  
    
  //  GLES30.glEndTransformFeedback();


  		




  318
  
  
    
  //  GLES30.glFlush();


  		




  
  317
  
    

  		




  
  318
  
    
    int error = GLES30.glGetError();


  		




  
  319
  
    

  		




  
  320
  
    
    if (error != GLES30.GL_NO_ERROR)


  		




  
  321
  
    
      {


  		




  
  322
  
    
      throw new RuntimeException("glError 0x" + Integer.toHexString(error));


  		




  
  323
  
    
      }


  		




  
  324
  
    

  		




  
  325
  
    
    GLES30.glEndTransformFeedback();


  		




  
  326
  
    
    GLES30.glFlush();


  		




  319
  327
  
    

  		




  320
  328
  
    
    GLES30.glBindBuffer(GLES30.GL_ARRAY_BUFFER, 0 );


  		




  321
  
  
    
/*


  		




  322
  
  
    
int len = mesh.dataLength*MeshObject.BYTES_PER_FLOAT*MeshObject.POSITION_DATA_SIZE;


  		




  
  329
  
    

  		




  
  330
  
    
int len = 3*(mesh.dataLength-2)*MeshObject.BYTES_PER_FLOAT*MeshObject.POSITION_DATA_SIZE;


  		




  323
  331
  
    

  		




  324
  332
  
    
Buffer mappedBuffer =  GLES30.glMapBufferRange(GLES30.GL_TRANSFORM_FEEDBACK_BUFFER, 0, len, GLES30.GL_MAP_READ_BIT);


  		




  325
  333
  
    
FloatBuffer fb = ((ByteBuffer) mappedBuffer).order(ByteOrder.nativeOrder()).asFloatBuffer();


  		




  326
  334
  
    
FloatBuffer bb = mesh.mMeshPositions;


  		




  327
  335
  
    

  		




  328
  
  
    
String msgB = "BEFORE: ", msgA = "AFTER : ";


  		




  
  336
  
    
String msgB = "";


  		




  329
  337
  
    
for(int d=0; d<mesh.dataLength; d++)


  		




  330
  338
  
    
  {


  		




  331
  339
  
    
  msgB+="("+(2*halfW*bb.get(3*d+0))+","+(2*halfH*bb.get(3*d+1))+","+(2*halfZ*bb.get(3*d+2))+")";


  		




  332
  
  
    
  msgA+="("+fb.get(3*d+0)+","+fb.get(3*d+1)+","+fb.get(3*d+2)+")";


  		




  333
  340
  
    
  }


  		




  334
  341
  
    
android.util.Log.d( "Feedback", msgB);


  		




  
  342
  
    

  		




  
  343
  
    
String msgA = "";


  		




  
  344
  
    
for(int d=0; d<3*(mesh.dataLength-2); d++)


  		




  
  345
  
    
  {


  		




  
  346
  
    
  if( d==0 || d==1 || ((d-2)%3)==0)


  		




  
  347
  
    
     msgA+="("+fb.get(3*d+0)+","+fb.get(3*d+1)+","+fb.get(3*d+2)+")";


  		




  
  348
  
    
  }


  		




  335
  349
  
    
android.util.Log.d( "Feedback", msgA);


  		




  336
  350
  
    

  		




  
  351
  
    
android.util.Log.e( "Feedback",msgA.equalsIgnoreCase(msgB) ? "identical":"not identical");


  		




  
  352
  
    

  		




  
  353
  
    

  		




  337
  354
  
    
    /// DEBUG ONLY //////


  		




  338
  355
  
    
    // displayBoundingRect(halfW, halfH, halfZ, surface, mM.getMVP(), fb, currTime );


  		




  339
  356
  
    
    /// END DEBUG ///////


  		




  340
  357
  
    

  		




  341
  358
  
    
GLES30.glUnmapBuffer(GLES30.GL_TRANSFORM_FEEDBACK_BUFFER);


  		




  342
  
  
    
*/


  		




  
  359
  
    

  		




  343
  360
  
    
    }


  		




  344
  361
  
    

  		




  345
  362
  
    
///////////////////////////////////////////////////////////////////////////////////////////////////


  		












  

    
      src/main/java/org/distorted/library/MeshObject.java
    
  





  86
  86
  
    
       GLES30.glBufferData(GLES30.GL_ARRAY_BUFFER, dataLength*    TEX_DATA_SIZE*BYTES_PER_FLOAT, mMeshTexture  , GLES30.GL_STATIC_READ);


  		




  87
  87
  
    
       }


  		




  88
  88
  
    

  		




  89
  
  
    
     if( mPosTBO[0]<0 )


  		




  
  89
  
    
     if( mPosTBO[0]<0 ) // Buffer for Transform Feedback. Since we are rendering with GL_TRIANGLE_STRIP, after passing N vertices


  		




  
  90
  
    
                        // we will get (N-2) triangles back, each 3 vertices of 12 bytes.


  		




  90
  91
  
    
       {


  		




  91
  92
  
    
       GLES30.glBindBuffer(GLES30.GL_TRANSFORM_FEEDBACK_BUFFER, mPosTBO[0]);


  		




  92
  
  
    
       GLES30.glBufferData(GLES30.GL_TRANSFORM_FEEDBACK_BUFFER, dataLength*POSITION_DATA_SIZE*BYTES_PER_FLOAT, null, GLES30.GL_STATIC_READ);


  		




  
  93
  
    
       GLES30.glBufferData(GLES30.GL_TRANSFORM_FEEDBACK_BUFFER, 3*(dataLength-2)*POSITION_DATA_SIZE*BYTES_PER_FLOAT, null, GLES30.GL_STATIC_READ);


  		




  93
  94
  
    
       GLES30.glBindBuffer(GLES30.GL_TRANSFORM_FEEDBACK_BUFFER, 0);


  		




  94
  95
  
    
       }


  		




  95
  96
  
    

  		












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