[Aqsis-commits] CVS: renderer/render texturemap.cpp,1.50,1.51

[Paul G. <pgr...@us...>]

Update of /cvsroot/aqsis/renderer/render
In directory usw-pr-cvs1:/tmp/cvs-serv15955/render

Modified Files:
	texturemap.cpp 
Log Message:
Implement bias0/1 range usage in shadow map sampling.
        - Michel Joron

Index: texturemap.cpp
===================================================================
RCS file: /cvsroot/aqsis/renderer/render/texturemap.cpp,v
retrieving revision 1.50
retrieving revision 1.51
diff -C2 -r1.50 -r1.51
*** texturemap.cpp	23 Oct 2002 21:13:30 -0000	1.50
--- texturemap.cpp	24 Oct 2002 20:21:43 -0000	1.51
***************
*** 1655,1663 ****
  
  	// Add in the bias at this point in camera coordinates.
! 	TqFloat bias = 0.0f;
  	const TqFloat* poptBias = QGetRenderContextI() ->GetFloatOption( "shadow", "bias0" );
  	if ( poptBias != 0 )
! 		bias = poptBias[ 0 ];
  
  	CqVector3D vecBias( 0, 0, bias );
  	// Generate a matrix to transform points from camera space into the space of the light source used in the
--- 1655,1682 ----
  
  	// Add in the bias at this point in camera coordinates.
! 	TqFloat bias0 = 0.0f;
  	const TqFloat* poptBias = QGetRenderContextI() ->GetFloatOption( "shadow", "bias0" );
  	if ( poptBias != 0 )
! 		bias0 = poptBias[ 0 ];
  
+ 	TqFloat bias1 = 0.0f;
+ 	poptBias = QGetRenderContextI() ->GetFloatOption( "shadow", "bias1" );
+ 	if ( poptBias != 0 )
+ 		bias1 = poptBias[ 0 ];
+ 
+ 	static CqRandom random(42);
+ 	TqFloat bias;
+ 	
+ 	
+ 	if (bias1 >= bias0) 
+ 	{
+ 		bias = random.RandomFloat(bias1 - bias0) + bias0;
+ 		if (bias > bias1) bias = bias1;
+ 	}
+ 	else 
+ 	{
+ 		bias = random.RandomFloat(bias0 - bias1) + bias1;
+ 		if (bias > bias0) bias = bias0;
+ 	}
  	CqVector3D vecBias( 0, 0, bias );
  	// Generate a matrix to transform points from camera space into the space of the light source used in the