mirror of
https://git.dev.opencascade.org/repos/occt.git
synced 2025-04-04 18:06:22 +03:00
3a9b5dc86a
This commit provides useful functionality for path tracing rendering core. 1) Graphic3d_RenderingParams class was extended with additional AdaptiveScreenSampling option (disabled by default). If this option is enabled, path tracing tries to adjust the number of samples for different screen areas. In this way, the more complex areas (from the point of light conditions) are sampled more intensively, while the simple areas are sampled very rarely. For example, caustics and glossy reflections are typical candidates for more precise sampling. In general, this allows to equalize image convergence and not to waste resources for already converged areas. It is also possible to visualize sampling densities by enabling ShowSamplingTiles option (activating and deactivating this option does not affect on the accumulated image). 2) Mixing OpenGL and ray-tracing output has been changed. Now blending is performed using OpenGL functionality, while ray-tracing shaders only output correct Z-value. Test case bugs vis bug27083 has been updated, since the alpha value is now correctly set by Ray-Tracing to 1, opaque.
88 lines
1.8 KiB
Tcl
88 lines
1.8 KiB
Tcl
# Script demonstrating Global illumination effects using non-interactive
|
|
# path tracing rendering engine in 3d view
|
|
|
|
#Category: Visualization
|
|
#Title: Path tracing
|
|
|
|
pload MODELING VISUALIZATION
|
|
|
|
# setup 3D viewer content
|
|
vinit name=View1 w=512 h=512
|
|
vglinfo
|
|
|
|
# setup light sources
|
|
vlight del 0
|
|
vlight del 1
|
|
vlight add positional head 0 pos 0.5 0.5 0.85
|
|
vlight change 0 sm 0.06
|
|
vlight change 0 int 30.0
|
|
|
|
vvbo 0
|
|
vsetdispmode 1
|
|
vcamera -persp
|
|
|
|
# setup outer box
|
|
box b 1 1 1
|
|
explode b FACE
|
|
vdisplay b_1 b_2 b_3 b_5 b_6
|
|
vsetlocation b_1 1 0 0
|
|
vsetlocation b_2 -1 0 0
|
|
vsetlocation b_3 0 1 0
|
|
vsetlocation b_5 0 0 1
|
|
vsetlocation b_6 0 0 -1
|
|
|
|
vsetmaterial b_1 plastic
|
|
vsetmaterial b_2 plastic
|
|
vsetmaterial b_3 plastic
|
|
vsetmaterial b_5 plastic
|
|
vsetmaterial b_6 plastic
|
|
vbsdf b_1 -kd 1 0.3 0.3 -ks 0
|
|
vbsdf b_2 -kd 0.3 0.5 1 -ks 0
|
|
vbsdf b_3 -kd 1 -ks 0
|
|
vbsdf b_5 -kd 1 -ks 0
|
|
vbsdf b_6 -kd 1 -ks 0
|
|
|
|
vfront
|
|
vfit
|
|
|
|
# setup first inner sphere
|
|
psphere s 0.2
|
|
vdisplay s
|
|
vsetlocation s 0.21 0.3 0.2
|
|
vsetmaterial s glass
|
|
vbsdf s -absorpcolor 0.8 0.8 1.0
|
|
vbsdf s -absorpcoeff 6
|
|
|
|
# setup first inner box
|
|
box c 0.3 0.3 0.2
|
|
vdisplay c
|
|
vsetlocation c 0.55 0.3 0.0
|
|
vlocrotate c 0 0 0 0 0 1 -30
|
|
vsetmaterial c plastic
|
|
vbsdf c -kd 1.0 0.8 0.2 -ks 0.3 -n
|
|
|
|
# setup second inner box
|
|
box g 0.15 0.15 0.3
|
|
vdisplay g
|
|
vsetlocation g 0.7 0.25 0.2
|
|
vlocrotate g 0 0 0 0 0 1 10
|
|
vsetmaterial g glass
|
|
vbsdf g -absorpcolor 0.8 1.0 0.8
|
|
vbsdf g -absorpcoeff 6
|
|
|
|
# setup second inner sphere
|
|
psphere r 0.1
|
|
vdisplay r
|
|
vsetmaterial r plastic
|
|
vbsdf r -kd 0.5 0.9 0.3 -ks 0.0 -kr 0.3 -n
|
|
vbsdf r -fresnel Constant 1.0
|
|
vsetlocation r 0.5 0.65 0.1
|
|
|
|
puts "Trying path tracing mode..."
|
|
vrenderparams -ray -gi -rayDepth 8
|
|
|
|
puts "Make several path tracing iterations to refine the picture, please wait..."
|
|
vfps 100
|
|
puts "Done. To improve the image further, or after view manipulations, give command:"
|
|
puts "vfps \[nb_iteratons\]"
|