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Revision 559da65d

Added by Leszek Koltunski almost 7 years ago

Progress with Stencil app. Rendering through an intermediate FBO still doesn't quite work.

View differences:

src/main/java/org/distorted/examples/fbo/FBORenderer.java
82 82 

  		




  83
  83
  
    
     // we can also, to save memory, delete/recreate


  		




  84
  84
  
    
     // the depth buffer each time. This is optional.


  		




  85
  
  
    
     DistortedFramebuffer fbo = mRoot.getFramebuffer();


  		




  86
  
  
    
     if( fbo!=null ) fbo.enableDepthStencil(mDepth ? DistortedFramebuffer.DEPTH_NO_STENCIL:DistortedFramebuffer.NO_DEPTH_STENCIL);


  		




  
  85
  
    
     mRoot.enableDepthStencil(mDepth ? DistortedFramebuffer.DEPTH_NO_STENCIL:DistortedFramebuffer.NO_DEPTH_NO_STENCIL);


  		




  87
  86
  
    
     }


  		




  88
  87
  
    

  		




  89
  88
  
    
///////////////////////////////////////////////////////////////////////////////////////////////////


  		












  

    
      src/main/java/org/distorted/examples/stencil/StencilRenderer.java
    
  





  70
  70
  
    
        }


  		




  71
  71
  
    
      else


  		




  72
  72
  
    
        {


  		




  73
  
  
    
        if( mFBONode==null ) mFBONode = new DistortedNode(mFBOTex,mFBOEffects,mQuad);


  		




  74
  
  
    

  		




  75
  73
  
    
        mScreen.detachAll();


  		




  76
  74
  
    
        mScreen.attach(mFBONode);


  		




  77
  75
  
    
        mFBONode.attach(mCube1Node);


  		




  78
  
  
    
        mFBONode.attach(mCube2Node);


  		




  79
  76
  
    
        mFBONode.attach(mFloorNode);


  		




  80
  
  
    

  		




  81
  
  
    
        DistortedFramebuffer fbo = mFBONode.getFramebuffer();


  		




  82
  
  
    
        if( fbo!=null ) fbo.enableDepthStencil(DistortedFramebuffer.BOTH_DEPTH_STENCIL);


  		




  83
  
  
    
        else


  		




  84
  
  
    
          {


  		




  85
  
  
    
          android.util.Log.e("stencil", "failed to enable STENCIL!");


  		




  86
  
  
    
          }


  		




  
  77
  
    
        mFBONode.attach(mCube2Node);


  		




  
  78
  
    
        mFBONode.enableDepthStencil(DistortedFramebuffer.BOTH_DEPTH_STENCIL);


  		




  87
  79
  
    
        }


  		




  88
  80
  
    
      }


  		




  89
  81
  
    

  		




  ......




  110
  102
  
    
      mCube1Node = new DistortedNode(mCubeTex ,mCube1Effects,mCubeMesh );


  		




  111
  103
  
    
      mCube2Node = new DistortedNode(mCubeTex ,mCube2Effects,mCubeMesh );


  		




  112
  104
  
    
      mFloorNode = new DistortedNode(mFloorTex,mFloorEffects,mQuad     );


  		




  113
  
  
    

  		




  
  105
  
    
      mFBONode   = new DistortedNode(mFBOTex  ,mFBOEffects  ,mQuad     );


  		




  
  106
  
    

  		




  
  107
  
    
      ///////////////// The Meat of this App - shamelessly ripped off https://open.gl/depthstencils ///////////////////////


  		




  
  108
  
    
      /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////


  		




  
  109
  
    
      // Stuff to do just before we render the upper Cube


  		




  
  110
  
    
      // (nothing - i.e. use default OpenGL settings with one difference - in Distorted, Depth test is on by default)


  		




  
  111
  
    
      /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////


  		




  
  112
  
    
      // Stuff to do just before we render the Floor


  		




  114
  113
  
    
      mFloorNode.glEnable(GLES30.GL_STENCIL_TEST);                               // Enable Stencil when rendering this Node


  		




  115
  114
  
    
      mFloorNode.glStencilFunc(GLES30.GL_ALWAYS, 1, 0xFF);                       // Set any stencil to 1


  		




  116
  115
  
    
      mFloorNode.glStencilOp(GLES30.GL_KEEP, GLES30.GL_KEEP, GLES30.GL_REPLACE); // replace with 1 when we fail Depth test


  		




  117
  116
  
    
      mFloorNode.glStencilMask(0xFF);                                            // Write to stencil buffer


  		




  118
  117
  
    
      mFloorNode.glDepthMask(false);                                             // Don't write to depth buffer


  		




  119
  
  
    
      mFloorNode.glClear(GLES30.GL_STENCIL_BUFFER_BIT);                          // Clear stencil buffer (0 by default)


  		




  
  118
  
    
      mFloorNode.glClear(GLES30.GL_STENCIL_BUFFER_BIT);                          // Clear stencil buffer (by default, with a 0)


  		




  120
  119
  
    

  		




  
  120
  
    
      /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////


  		




  
  121
  
    
      // Stuff to do just before we render the lower Cube


  		




  121
  122
  
    
      mCube2Node.glEnable(GLES30.GL_STENCIL_TEST);                               // Enable Stencil when rendering this Node


  		




  122
  123
  
    
      mCube2Node.glStencilFunc(GLES30.GL_EQUAL, 1, 0xFF);                        // Pass test if stencil value is 1


  		




  123
  124
  
    
      mCube2Node.glStencilMask(0x00);                                            // Don't write anything to stencil buffer


  		




  124
  125
  
    
      mCube2Node.glDepthMask(true);                                              // Write to depth buffer


  		




  
  126
  
    
      /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////


  		




  125
  127
  
    

  		




  126
  128
  
    
      mScreen = new DistortedScreen(mView);


  		




  127
  129
  
    
      mScreen.glClearColor(1.0f,1.0f,1.0f,1.0f);


  		




  ......




  149
  151
  
    
      float fh = mFloorTex.getHeight();


  		




  150
  152
  
    
      float fd = mFloorTex.getDepth(mQuad);


  		




  151
  153
  
    

  		




  
  154
  
    
      float bw = mFBOTex.getWidth();


  		




  
  155
  
    
      float bh = mFBOTex.getHeight();


  		




  
  156
  
    

  		




  152
  157
  
    
      float cubeScale = 0.4f*(width>height ? height/ch:width/cw);


  		




  153
  158
  
    
      float floorScale= 0.8f*(width>height ? height/fh:width/fw);


  		




  154
  159
  
    

  		




  ......




  169
  174
  
    
      Static1D rotSt1 = new Static1D(angle);


  		




  170
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      Static1D rotSt2 = new Static1D(angle-90.0f);


  		




  171
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  177
  
    
      /////////////////////////////////////////////////////////////////////////////////////////////////////


  		




  
  178
  
    
      // Those Matrix effects, i.e. correct positioning of Objects on the Screen, is admittedly quite hard.


  		




  
  179
  
    
      // Figured out of experimentation.


  		




  
  180
  
    
      /////////////////////////////////////////////////////////////////////////////////////////////////////


  		




  
  181
  
    
      // Upper cube


  		




  172
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      mCube1Effects.abortEffects(EffectTypes.MATRIX);


  		




  173
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      mCube1Effects.move( new Static3D( (width-cubeScale*cw)/2 , height/2-cubeScale*ch , cubeScale *cd/2) );


  		




  174
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      mCube1Effects.scale(cubeScale);


  		




  175
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      mCube1Effects.rotate(rotSt1, axisX, cubeCenter);


  		




  176
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      mCube1Effects.rotate(rotDyn, axisY, cubeCenter);


  		




  177
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  188
  
    
      /////////////////////////////////////////////////////////////////////////////////////////////////////


  		




  
  189
  
    
      // Floor


  		




  
  190
  
    
      mFloorEffects.abortEffects(EffectTypes.MATRIX);


  		




  
  191
  
    
      mFloorEffects.move( new Static3D( (width-floorScale*fw)/2 ,height/2-floorScale*fh/2, floorScale*fd/2) );


  		




  
  192
  
    
      mFloorEffects.scale(floorScale);


  		




  
  193
  
    
      mFloorEffects.rotate(rotSt2, axisX, floorCenter);


  		




  
  194
  
    
      mFloorEffects.rotate(rotDyn, axisZ, floorCenter);


  		




  
  195
  
    

  		




  
  196
  
    
      /////////////////////////////////////////////////////////////////////////////////////////////////////


  		




  
  197
  
    
      // Lower cube


  		




  178
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      mCube2Effects.abortEffects(EffectTypes.MATRIX);


  		




  179
  199
  
    
      mCube2Effects.move( new Static3D( (width-cubeScale*cw)/2 , height/2-cubeScale*ch , cubeScale *cd/2) );


  		




  180
  200
  
    
      mCube2Effects.scale(cubeScale);


  		




  ......




  183
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      mCube2Effects.scale(new Static3D(1,-1,1) );


  		




  184
  204
  
    
      mCube2Effects.move( new Static3D( 0, -2*ch , 0) );


  		




  185
  205
  
    

  		




  186
  
  
    
      mFloorEffects.abortEffects(EffectTypes.MATRIX);


  		




  187
  
  
    
      mFloorEffects.move( new Static3D( (width-floorScale*fw)/2 ,height/2-floorScale*fh/2, floorScale*fd/2) );


  		




  188
  
  
    
      mFloorEffects.scale(floorScale);


  		




  189
  
  
    
      mFloorEffects.rotate(rotSt2, axisX, floorCenter);


  		




  190
  
  
    
      mFloorEffects.rotate(rotDyn, axisZ, floorCenter);


  		




  191
  
  
    

  		




  192
  
  
    
      if( mFBONode==null ) mFBONode = new DistortedNode(mFBOTex,mFBOEffects,mQuad);


  		




  193
  
  
    

  		




  194
  
  
    
      DistortedFramebuffer fbo = mFBONode.getFramebuffer();


  		




  195
  
  
    
      if( fbo!=null ) fbo.resize(width,height);


  		




  196
  
  
    
      else


  		




  197
  
  
    
        {


  		




  198
  
  
    
        android.util.Log.e("stencil", "failed to resize FBO!");


  		




  199
  
  
    
        }


  		




  
  206
  
    
      /////////////////////////////////////////////////////////////////////////////////////////////////////


  		




  
  207
  
    
      // Framebuffer


  		




  
  208
  
    
      mFBOEffects.abortEffects(EffectTypes.MATRIX);


  		




  
  209
  
    
      mFBOEffects.scale( new Static3D( (float)width/bw, (float)height/bh, 1.0f) );


  		




  200
  210
  
    

  		




  201
  
  
    
      mScreen.resize(width, height);


  		




  
  211
  
    
      mFBONode.resize( (int)((float)width/bw), (int)((float)height/bh) );


  		




  
  212
  
    
      mScreen.resize( width,height);


  		




  202
  213
  
    
      }


  		




  203
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  204
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///////////////////////////////////////////////////////////////////////////////////////////////////


  		












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