mirror of
https://git.dev.opencascade.org/repos/occt.git
synced 2025-04-03 17:56:21 +03:00
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
89 lines
2.2 KiB
Tcl
89 lines
2.2 KiB
Tcl
# Script demonstrating Global illumination effects using non-interactive
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# path tracing rendering engine in 3d view
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#Category: Visualization
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#Title: Path tracing - Cube
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pload MODELING VISUALIZATION
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# setup 3D viewer content
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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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# setup light sources
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vlight del 0
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vlight del 1
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vlight add positional head 0 pos 0.5 0.5 0.85
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vlight change 0 sm 0.06
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vlight change 0 int 30.0
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vvbo 0
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vsetdispmode 1
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vcamera -persp
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# setup outer box
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box b 1 1 1
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explode b FACE
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vdisplay -noupdate b_1 b_2 b_3 b_5 b_6
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vlocation -noupdate b_1 -setLocation 1 0 0
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vlocation -noupdate b_2 -setLocation -1 0 0
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vlocation -noupdate b_3 -setLocation 0 1 0
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vlocation -noupdate b_5 -setLocation 0 0 1
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vlocation -noupdate b_6 -setLocation 0 0 -1
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vsetmaterial -noupdate b_1 plastic
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vsetmaterial -noupdate b_2 plastic
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vsetmaterial -noupdate b_3 plastic
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vsetmaterial -noupdate b_5 plastic
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vsetmaterial -noupdate b_6 plastic
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vbsdf b_1 -kd 1 0.3 0.3 -ks 0
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vbsdf b_2 -kd 0.3 0.5 1 -ks 0
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vbsdf b_3 -kd 1 -ks 0
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vbsdf b_5 -kd 1 -ks 0
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vbsdf b_6 -kd 1 -ks 0
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vfront
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vfit
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# setup first inner sphere
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psphere s 0.2
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vdisplay -noupdate s
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vlocation -noupdate s -setLocation 0.21 0.3 0.2
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vsetmaterial -noupdate s glass
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vbsdf s -absorpcolor 0.8 0.8 1.0
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vbsdf s -absorpcoeff 6
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# setup first inner box
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box c 0.3 0.3 0.2
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vdisplay -noupdate c
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vlocation -noupdate c -setLocation 0.55 0.3 0.0
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vlocation -noupdate c -rotate 0 0 0 0 0 1 -30
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vsetmaterial -noupdate c plastic
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vbsdf c -kd 1.0 0.8 0.2 -ks 0.3 -n
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# setup second inner box
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box g 0.15 0.15 0.3
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vdisplay -noupdate g
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vlocation -noupdate g -setLocation 0.7 0.25 0.2
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vlocation -noupdate g -rotate 0 0 0 0 0 1 10
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vsetmaterial -noupdate g glass
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vbsdf g -absorpcolor 0.8 1.0 0.8
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vbsdf g -absorpcoeff 6
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# setup second inner sphere
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psphere r 0.1
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vdisplay -noupdate r
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vsetmaterial -noupdate r plastic
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vbsdf r -kd 0.5 0.9 0.3 -ks 0.0 -kr 0.3 -n
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vbsdf r -fresnel Constant 1.0
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vlocation r -setLocation 0.5 0.65 0.1
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puts "Trying path tracing mode..."
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vrenderparams -ray -gi -rayDepth 8
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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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