The Persistence of Vision Raytracer (POV-Ray).
This is the legacy Bug Tracking System for the POV-Ray project. Bugs listed here are being migrated to our github issue tracker. Please refer to that for new reports or updates to existing ones on this system.
Attached to Project: POV-Ray
Opened by Christoph Lipka - 2010-04-13
Last edited by Christoph Lipka - 2010-06-19
Opened by Christoph Lipka - 2010-04-13
Last edited by Christoph Lipka - 2010-06-19
FS#95 - Photons are over-attenuated by semi-transparent surfaces
The code to attenuate transmitted photons according to surface texture was apparently duplicated during refactoring of the source code for version 3.7. Behavior has changed from 3.6 to 3.7 (beta.36) accordingly, as can be demonstrated with the following scene:
global_settings { assumed_gamma 1.0 max_trace_level 10 photons { spacing 0.02 } } camera { right x*image_width/image_height location <0,2.6,-10> look_at <0,0.75,0> } light_source { <500,300,150> color rgb 1.3 photons { refraction on reflection on } } sky_sphere { pigment { gradient y color_map { [0.0 rgb <0.6,0.7,1.0>] [0.7 rgb <0.0,0.1,0.8>] } } } plane { y, 0 texture { pigment { color rgb <1.0, 0.8, 0.6> } } } #declare M_Glass= material { texture { pigment {rgbt 1} finish { ambient 0.0 diffuse 0.05 specular 0.6 roughness 0.005 reflection { 0.1, 1.0 fresnel on } conserve_energy } } interior { ior 1.5 fade_power 1001 fade_distance 0.9 fade_color <0.5,0.8,0.6> } } #declare M_PseudoGlass2= material { texture { pigment {rgbf <0.8,0.2,0.2,0.8>} finish { ambient 0.0 diffuse 0.05 specular 0.6 roughness 0.005 reflection { 0.1, 1.0 fresnel on } conserve_energy } } interior { ior 1.0 } } sphere { <1.1,1,-1.3>, 1 material { M_Glass } photons { target 1.0 refraction on reflection on } } box { <2.4,0,-2.3>, <2.6,4,0.3> material { M_PseudoGlass2 } photons { target 1.0 refraction on reflection on } }
Closed by Christoph Lipka
Saturday, 19 June 2010, 12:25 GMT
Reason for closing: Fixed
Additional comments about closing:
Saturday, 19 June 2010, 12:25 GMT
Reason for closing: Fixed
Additional comments about closing:
no beta tester feedback on this for
quite a while, so I consider that good
news.
fixed with change #4939