mirror of
https://git.dev.opencascade.org/repos/occt.git
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6e728f3b5c
* Multiple importance sampling for path tracing
* Improved light sources sampling (better handling several light sources)
* Fixed issues in light source intersection (light distance is taken into account)
* Add new TCL sample - OCCT Ball model for demonstrating physically-based materials
* Fix potential issue on NVIDIA GPUs ("Error: Failed to upload light source buffer")
* Path tracing materials reviewed; directional light source was smoother by default
79 lines
1.8 KiB
Tcl
79 lines
1.8 KiB
Tcl
# Script demonstrating Global illumination materials
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# using path tracing rendering engine in 3D view
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#Category: Visualization
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#Title: Path tracing - Ball
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set aBallPath [locate_data_file occ/Ball.brep]
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pload MODELING VISUALIZATION
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# Setup 3D viewer
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vclear
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vinit name=View1 w=512 h=512
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vglinfo
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vvbo 0
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vsetdispmode 1
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# Setup view parameters
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vcamera -persp
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vviewparams -scale 18 -eye 44.49 -0.15 33.93 -at -14.20 -0.15 1.87 -up -0.48 0.00 0.88
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# Load the model from disk
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puts "Importing shape..."
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restore $aBallPath ball
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# Tessellate the model
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incmesh ball 0.01
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# Display the model and assign material
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vdisplay -noupdate ball
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vsetmaterial -noupdate ball glass
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# Create a sphere inside the model
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psphere s 8
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incmesh s 0.01
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vdisplay -noupdate s
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vsetlocation -noupdate s 0 0 13
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vsetmaterial -noupdate s plaster
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# Create chessboard-style floor
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box tile 10 10 0.1
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eval compound [lrepeat 144 tile] tiles
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explode tiles
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for {set i 0} {$i < 12} {incr i} {
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for {set j 1} {$j <= 12} {incr j} {
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ttranslate tiles_[expr 12 * $i + $j] [expr $i * 10 - 90] [expr $j * 10 - 70] -0.15
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vdisplay -noupdate tiles_[expr 12 * $i + $j]
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vsetmaterial -noupdate tiles_[expr 12 * $i + $j] plaster
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if {($i + $j) % 2 == 0} {
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vbsdf tiles_[expr 12 * $i + $j] -kd 0.85
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} else {
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vbsdf tiles_[expr 12 * $i + $j] -kd 0.45
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}
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}
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}
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# Configure light sources
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vlight del 1
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vlight change 0 head 0
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vlight change 0 direction -0.25 -1 -1
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vlight change 0 sm 0.3
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vlight change 0 int 10
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# Load environment map
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vtextureenv on 1
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puts "Trying path tracing mode..."
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vrenderparams -ray -gi -rayDepth 10
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# Start progressive refinement mode
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#vprogressive
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puts "Make several path tracing iterations to refine the picture, please wait..."
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vfps 100
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puts "Done. To improve the image further, or after view manipulations, give command:"
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puts "vfps \[nb_iteratons\]"
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