|
331 | POV-Ray | Geometric Primitives | Definite Bug | 3.70 release | Very Low | Medium | Intersection causes quadric to disappear | Closed | |
|
Task Description
The following paraboloid renders correctly:
intersection
{ quadric { <1, 0, 1>, <0, 0, 0>, <0, 1, 0>, -1 }
cylinder { 0, y, 1 }
}
However, when I extend the clipping cylinder downward:
intersection
{ quadric { <1, 0, 1>, <0, 0, 0>, <0, 1, 0>, -1 }
cylinder { -y, y, 1 }
}
the object disappears completely in POV-Ray 3.7 and 3.7.1. In POV-Ray 3.6.1, it renders as expected.
POV-Ray 3.7.0.unofficial (self-compiled with g++ 4.8, but completely unaltered) POV-Ray 3.7.1-alpha.8150025.unofficial openSUSE 13.2 GNU/Linux
This scene file illustrates the problem:
// +w480 +h240
#version 3.6; //[sic]
global_settings { assumed_gamma 1 }
camera
{ location <0, 1, -7.5958>
look_at <0, 1, 0>
right 2 * x
up y
angle 43.1038
}
#default { finish { diffuse 0.6 ambient rgb 0.15618 } }
light_source
{ <-4.3125, 9.6250, -7.4695>,
rgb 6856.3
fade_power 2 fade_distance 0.10417
spotlight point_at <0, 1, 0> radius 45 falloff 90
}
box
{ -<9, 11, 9>, <9, 11, 9>
pigment { rgb 1 }
}
plane
{ y, 0
pigment { checker rgb 0.05 rgb 1 }
}
intersection
{ quadric { <1, 0, 1>, <0, 0, 0>, <0, 1, 0>, -1 }
cylinder { 0, y, 1 }
pigment { green 0.5 }
translate <-1.25, 1, 0>
}
intersection
{ quadric { <1, 0, 1>, <0, 0, 0>, <0, 1, 0>, -1 }
cylinder { -y, y, 1 }
pigment { green 0.5 }
translate <1.25, 1, 0>
}
On the right side, there should have been a cylinder capped with a paraboloid. A thread has been started in povray.bugreports. Jerome has started to look at it.
|
|
236 | POV-Ray | Animation | Possible Bug | 3.70 RC3 | Very Low | Medium | Segmentation fault with animation of large image | Closed | |
|
Task Description
If the image is more than 1270 pixels wide or more than 720 pixels high, animation fails with a segmentation fault during the second rendered frame. This happens after parsing is complete and the .pov-state file is created. The last message line is the “[Rendering...]” line. (There is also a separate, but possibly related, issue that the output display does not work for these renders.)
On one occasion, POV-Ray hung, and I had to ctrl-Z kill -9 out of it.
On another occasion, instead of the segmentation fault, I got the message:
povray: xcb_io.c:140: dequeue_pending_request: Assertion `req == dpy->xcb->pending_requests' failed.
Aborted
There is no crash when -D is used.
I have not run an animation this large in Windows, so I don’t know if it’s a problem there.
Neither problem occurs in POV-Ray 3.6.1.
I used the following source code:
global_settings { assumed_gamma 1 }
light_source { <-1, 1, -1> * 1000, rgb 1 }
sphere { 2.5 * z, 1 pigment { red 1 } }
Operating system: openSUSE Linux 12.1 Hardware: HP Pavilion dv5030us Notebook PC (32 bits) RAM: 1GB Displays: 1280×800 built-in panel; 1680×1050 HP w2007 external monitor
Libraries
Boost 1.48.0 (Note: bzip2 and python dependent modules did not compile, and MPI support does not work.) Zlib 1.2.5 (LibXML 2.7.8) LibPNG 1.5.7 LibJPEG IJG 8d LibTIFF 3.8.2 OpenEXR 1.6.1 (IlmBase 1.0.1) SDL unknown
|