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Revision 5b1c0f47

Added by Leszek Koltunski over 7 years ago

Switch off the pre-compulting of sin and cos in CPU as it turns out that those two are single-instruction functions on any modern GPU ( http://www.gamedev.net/topic/322422-number-of-gpu-cycles-for-cos-and-sin-functions/ - link form 2005 ! )

View differences:

src/main/java/org/distorted/library/EffectQueueVertex.java
157 157 
///////////////////////////////////////////////////////////////////////////////////////////////////
158 158 
// Do various post-processing on already computed effects.
159 159 
// 1) here unlike in the fragment queue, we don't have to multiply the points by ModelView matrix because that gets done in the shader.
160 
// 2) in case of swirl, pre-compute the sine and cosine of its rotation angle
161 
// 3) likewise in case of wave
160 
// 2) in case of SWIRL, switch the angle from degrees to radians
161 
// 3) likewise in case of WAVE
162 
// 4) In case of DISTORT, invert the Y-axis
162 163
163 164 
  void postprocess(int effect)
164 165 
    {
165 
    double d;
166 

  		




  167
  166
  
    
    if( mName[effect]==EffectNames.SWIRL.ordinal() )


  		




  168
  167
  
    
      {


  		




  169
  
  
    
      d = Math.PI*mUniforms[NUM_UNIFORMS*effect]/180;


  		




  170
  
  
    
      mUniforms[NUM_UNIFORMS*effect  ] = (float)Math.sin(d);


  		




  171
  
  
    
      mUniforms[NUM_UNIFORMS*effect+4] = (float)Math.cos(d);


  		




  
  168
  
    
      mUniforms[NUM_UNIFORMS*effect  ] = (float)(Math.PI*mUniforms[NUM_UNIFORMS*effect  ]/180);


  		




  172
  169
  
    
      }


  		




  173
  170
  
    
    if( mName[effect]==EffectNames.WAVE.ordinal() )


  		




  174
  171
  
    
      {


  		




  175
  
  
    
      d = Math.PI*mUniforms[NUM_UNIFORMS*effect+1]/180;


  		




  176
  
  
    
      mUniforms[NUM_UNIFORMS*effect+1] = (float)Math.sin(d);


  		




  177
  
  
    
      mUniforms[NUM_UNIFORMS*effect+4] = (float)Math.cos(d);


  		




  178
  
  
    
      d = Math.PI*mUniforms[NUM_UNIFORMS*effect+3]/180;


  		




  179
  
  
    
      mUniforms[NUM_UNIFORMS*effect+3] = (float)Math.sin(d);


  		




  180
  
  
    
      mUniforms[NUM_UNIFORMS*effect+5] = (float)Math.cos(d);


  		




  
  172
  
    
      mUniforms[NUM_UNIFORMS*effect+1] = (float)(Math.PI*mUniforms[NUM_UNIFORMS*effect+1]/180);


  		




  
  173
  
    
      mUniforms[NUM_UNIFORMS*effect+3] = (float)(Math.PI*mUniforms[NUM_UNIFORMS*effect+3]/180);


  		




  181
  174
  
    
      }


  		




  182
  175
  
    
    if( mName[effect]==EffectNames.DISTORT.ordinal() )


  		




  183
  176
  
    
      {


  		












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