More Related Content Similar to Space Time Varying Color Palettes (20) 1. Sponsored by
Space Time Varying
Color Palette
Bo ZHOU
J Cube Inc.
!
Paolo Berto Durrante
J Cube Inc.
Polygon Pictures Inc.
15. Sponsored bySA2015.SIGGRAPH.ORG
Solution
DAG network
a typed eventing network
time
space position
special light
…
generate dynamic code for specific network
independent from any renderer/software
what we want is a set of colors outputed from the network
constant statement will be optimised by compiler
17. Sponsored bySA2015.SIGGRAPH.ORG
Use Case
generated shader code
class jcubeToon5_PalettesCoShader_1()
{
uniform float num_rows = 5 ;
uniform float cell_size = 30 ;
uniform float border_size = 2 ;
!public uniform float has_light_event = 0 ;
!uniform string color_palettes[2] =
{
"/Users/Bo/Documents/maya/projects/default/sourceimages/Palette_A.tif" , // file2
"/Users/Bo/Documents/maya/projects/default/sourceimages/Palette_B.tif" // file1
};
!public void construct()
{
Gather( color_palettes[0] , cell_size , border_size , num_rows ) ;
Gather( color_palettes[1] , cell_size , border_size , num_rows ) ;
}
!//////////////////////////////////////////
public void surface( output color Ci , Oi ;
output color outputs[5] ;
uniform float float_index = - 1 ;
color color_index = 0 )
{
float choice = - 1 ;
! // jcubeToonNumericEvent1
//
float jcubeToonNumericEvent1_outputs = - 1 ;
uniform float jcubeToonNumericEvent1_first_term = 1.0 ;
uniform float jcubeToonNumericEvent1_second_term = 4.0 ;
uniform float jcubeToonNumericEvent1_if_palette = 0 ; // file2
uniform float jcubeToonNumericEvent1_else_palette = 1 ; // file1
if ( jcubeToonNumericEvent1_first_term > jcubeToonNumericEvent1_second_term )
{
jcubeToonNumericEvent1_outputs = jcubeToonNumericEvent1_if_palette ;
}
else
{
jcubeToonNumericEvent1_outputs = jcubeToonNumericEvent1_else_palette ;
}
choice = jcubeToonNumericEvent1_outputs ;
if ( float_index > - 1 )
{
Search( color_palettes[choice] , float_index , outputs ) ;
}
else
{
Search( color_palettes[choice] , color_index , outputs ) ;
}
}
}
19. Sponsored bySA2015.SIGGRAPH.ORG
Use Case
class jcubeToon5_PalettesCoShader_1()
{
uniform float num_rows = 5 ;
uniform float cell_size = 30 ;
uniform float border_size = 2 ;
!public uniform float has_light_event = 0 ;
!uniform string color_palettes[3] =
{
"/Users/Bo/Documents/maya/projects/default/sourceimages/Palette_C.tif" , // file3
"/Users/Bo/Documents/maya/projects/default/sourceimages/Palette_A.tif" , // file2
"/Users/Bo/Documents/maya/projects/default/sourceimages/Palette_B.tif" // file1
};
!public void construct()
{
Gather( color_palettes[0] , cell_size , border_size , num_rows ) ;
Gather( color_palettes[1] , cell_size , border_size , num_rows ) ;
Gather( color_palettes[2] , cell_size , border_size , num_rows ) ;
}
!float inside_box( uniform point box_min , box_max ; point x )
{
if ( x[0] > box_min[0] && x[0] < box_max[0] )
if ( x[1] > box_min[1] && x[1] < box_max[1] )
if ( x[2] > box_min[2] && x[2] < box_max[2] )
return 1 ;
return 0 ;
}
!float inside_sphere( uniform point sphere_position ; uniform float sphere_radius ; point x )
{
if ( distance( x , sphere_position ) < sphere_radius )
return 1 ;
return 0 ;
}
!float inside_cone( uniform point cone_position ; uniform vector cone_direction ; uniform float cone_angle ; point x )
{
color a = transmission( cone_position , x , "samples" , 1 ) ;
float b = step( cos( radians( cone_angle ) * 0.5 ) , normalize( x - cone_position ) . normalize( cone_direction ) ) ;
return a[0] * b ;
}
!//////////////////////////////////////////
public void surface( output color Ci , Oi ;
output color outputs[5] ;
uniform float float_index = - 1 ;
color color_index = 0 )
{
point Pw = transform( "current" , "world" , P ) ;
!float choice = - 1 ;
!// jcubeToonNumericEvent1
//
float jcubeToonNumericEvent1_outputs = - 1 ;
uniform float jcubeToonNumericEvent1_first_term = 1.0 ;
uniform float jcubeToonNumericEvent1_second_term = 4.0 ;
uniform float jcubeToonNumericEvent1_if_palette = 1 ; // file2
uniform float jcubeToonNumericEvent1_else_palette = 2 ; // file1
if ( jcubeToonNumericEvent1_first_term > jcubeToonNumericEvent1_second_term )
{
jcubeToonNumericEvent1_outputs = jcubeToonNumericEvent1_if_palette ;
}
else
{
jcubeToonNumericEvent1_outputs = jcubeToonNumericEvent1_else_palette ;
}
// jcubeToonRegionEvent2
//
float jcubeToonRegionEvent2_outputs = - 1 ;
point jcubeToonRegionEvent2_Pw = Pw ;
float jcubeToonRegionEvent2_in_palette = jcubeToonNumericEvent1_outputs ; // jcubeToonNumericEvent1
uniform float jcubeToonRegionEvent2_out_palette = 0 ; // file3
uniform point jcubeToonRegionEvent2_box_min = point(-0.14332814514636993, 8.197878287319327e-08, -5.021854877471924) ;
uniform point jcubeToonRegionEvent2_box_max = point(2.2686707973480225, 7.261795997619629, -1.861090064048767) ;
if ( inside_box( jcubeToonRegionEvent2_box_min , jcubeToonRegionEvent2_box_max , jcubeToonRegionEvent2_Pw ) > 0 )
{
jcubeToonRegionEvent2_outputs = jcubeToonRegionEvent2_in_palette ;
}
else
{
jcubeToonRegionEvent2_outputs = jcubeToonRegionEvent2_out_palette ;
}
choice = jcubeToonRegionEvent2_outputs ;
if ( float_index > - 1 )
{
Search( color_palettes[choice] , float_index , outputs ) ;
}
else
{
Search( color_palettes[choice] , color_index , outputs ) ;
}
}
}
Sorry, a bit long then :)
20. Sponsored bySA2015.SIGGRAPH.ORG
Renderer
to the RSL-like renderer (3Delight)
generate coshader
invoked by shader as a black box
to the DSO renderer (mental ray)
generate LLVM JIT code
directly executed by shader as part of
the shader
22. Sponsored bySA2015.SIGGRAPH.ORG
Future
get rid of color palette completely
web+databased solution
abstract color palette
mapping semantics color to anything
replace color in cell with texture stream over
network
interactive feedback when changing palette
