POV-Ray : Newsgroups : povray.beta-test : Known bugs 11 Feb 2002 Server Time
30 Jul 2024 00:27:44 EDT (-0400)
  Known bugs 11 Feb 2002 (Message 1 to 2 of 2)  
From: Mike Williams
Subject: Known bugs 11 Feb 2002
Date: 10 Feb 2002 22:53:07
Message: <AI9XdOAa$zZ8EwRJ@econym.demon.co.uk>
KNOWN BUGS

Re: trivial question on topic (job000038)
(Poly Object Bug: heart has a dark line of artifacts)
http://news.povray.org/3BEBEB4C.CA854309@pacbell.net

Highlight bug #10 (job000137) 
(highlights are sometimes visible where they should be in shadow)
http://news.povray.org/3bb4cf08@news.povray.org

Macro bug #10 (job000146)
(POV can dereference a deallocated pointer if you return a local from a
macro.)
http://news.povray.org/3BB4ED11.8EC69CEC@hotmail.com
(also reported as: strings operations crash with both compiles
http://news.povray.org/e3piut8anmf4cli4pnfmstadgc3nleqvb2@4ax.com)

Radiosity sampling, with fix method #10 (job000177)
(radiosity sample counter is reset to the start every time, sampling
artefacts are produced)
http://news.povray.org/3BC5A13E.9C022BD6@reading.ac.uk

sin(X)^sin(X) -> crash! (job000179 and job000180)
http://news.povray.org/3baf7992@news.povray.org

crash inside two #while
(Possibly specific to Windows 2000)
(Thorsten says it's the same as job000179)
http://news.povray.org/3c3f1f29$1@news.povray.org

Strange spline problem (job000181)
(Changes from render to render. Control points are sometimes missing.)
http://news.povray.org/Xns9136AC2E64F60seed7@povray.org

Spline bug (job000182)
(The spline path is all wrong when certain time values are used.)
http://news.povray.org/3bb41dc8@news.povray.org

Blob problem (job000189)
and Blob : Toward a solution
(blob surface develops holes when "radius" is very small)
and Possible bug with blobs
(blob surface develops holes when the traced ray starts close to its
surface)
http://news.povray.org/3b99052c@news.povray.org
http://news.povray.org/3B991C90.D715B7A3@free.fr
http://news.povray.org/3c407ad3$1@news.povray.org

Additional (?) blob bug (job000189)
(blob component disappears when radius is 317 or greater)
http://news.povray.org/Xns9115B92CF7D8ACQ@204.213.191.226
(also reported as: Blob rendering error (job000136))
http://news.povray.org/Xns91203DC7F3CCQ@204.213.191.226

Bug with blobs and media (job000189)
(possibly related to  blob surface develops holes when "radius" is very
small)
http://news.povray.org/3be5f0b2@news.povray.org

Blob component textures transformed twize (job000189)
http://news.povray.org/3bf70645@news.povray.org

blob casting incorrect shadows on itself
(Thorsten says it's the same as the other blob bugs (job000189))
http://news.povray.org/Xns919C1CAA3E23Egerovandordatanethu@204.213.191.2
26

Superellipsoid epsilon to big ? (job000190)
(strange dark patches occur on a superellipsoid when the east-west-
exponent is set very small)
http://news.povray.org/3b992a81@news.povray.org

Slow rendering when using +ua and antialiasing method 1 (job000191)
(No details available)
http://news.povray.org/3bbf6347@news.povray.org

Bug: dispersion_samples affects photon brightness (job000193)
(higher dispersion_samples also gives brighter refractive photons)
http://news.povray.org/MPG.1631c5fca936293298969e@news.povray.org

Another strange photon behavior (job000195)
(a: bright colored caustics. b: holes/circular black spots)
http://news.povray.org/MPG.16510f3e44067d3f9896ae@news.povray.org

panoramic projection bug? (job000196)
(In progress)
http://news.povray.org/avnfut8fof5ualgf8hnrtpl1knlg8828sp@4ax.com

Light_sources in light_groups don't cast shadows (job000197)
(rendering without light buffers (-UL) puts the shadows back)
http://news.povray.org/3bfd4d63@news.povray.org

no_image, merge and shadows (job000198)
(setting no_image to an object in a merge causes that object to stop
casting shadows)
http://news.povray.org/vqfd0ucm5276q9j8sdh34afjliapc1kj0n@4ax.com

Re: triangle texture interpolation (job000199)
(the second texture is on the first point and the third texture is used
on the second and third points)
http://news.povray.org/3C0A8288.DDA0905B@free.fr

bug in sphere_sweep for removing parts of an object (job000200)
(discontinuous normals on inverse of sphere_sweep)
http://news.povray.org/3C1A5D47.EA38F6E5@amc.uva.nl

bug in sphere_sweep for removing parts of an object
(parameterised sphere_sweeps are very slow. May or may not be related to
job000176)
http://news.povray.org/3C1A5D47.EA38F6E5@amc.uva.nl

color dot operators (job000201)
((Color.red) doesn't work as a macro parameter)
http://news.povray.org/ofpr1ug9r6q3cak417pmj72bck6ufmgbtg@4ax.com

Bicubic patch triangles disappear (job000202)
(When the triangles are fairly small)
http://news.povray.org/3c23b26c@news.povray.org

Photon Problems (job000204)
(Rendering the file makes the image strangely bright)
http://news.povray.org/3bc4d0a9$1@news.povray.org

double_illuminate only works with direct lighting (job000207)
http://news.povray.org/3BF6F1FE.D21B0C6@oreka.com

Strange alpha channel bug (job000210)
(assumed_gamma affects the transparency of shadowed areas)
http://news.povray.org/3c1168c5$1@news.povray.org

problem with transparent image_maps (job000211)
(Objects with transparent image_maps have "non-transparent" shadows)
http://news.povray.org/3c24d1b3@news.povray.org (cancelled)
http://news.povray.org/eGSwuBAritK8EwLH@econym.demon.co.uk

Mapping warp and render window bugs (job000212)
(Object lighting is calculated incorrectly when mapping warps are used
in normals and the object is rotated)
http://news.povray.org/Xns9190F27EBFE9Bcsbhccse@204.213.191.226

Severe Lightbug, probably concerned with Macros... (long post)
(Objects with doubly rotated warp turbulence normals appear to
illuminated incorrectly)
(Thorsten assumes it's the same as job000212)
http://news.povray.org/3C4ABED3.F038E200@gmx.de

crash with photons, union, ior, lathe (job000213)
(Intel compile only)
http://news.povray.org/vfra4u0ndv4rf951196881cpt842an4906@4ax.com

transform syntax (job000214)
(transform {test_trans} sometimes requires {} and sometimes doesn't)
http://news.povray.org/3C09EE1B.A38DC91A@gmx.de

Bug with transform syntax
(Thorsten says it's the same as job000214)
http://news.povray.org/chrishuff-5FC1B7.19310427122001@netplex.aussie.or
g

Isosurfaces *much* slower in beta 7?
(isosurfaces with "evaluate" are now very slow)
(Confirmed by: Thorsten Froehlich)
(Thorsten says it's fixed in beta 8)
(Thorsten says it's fixed in beta 9)
(Thorsten says "This is ***not*** a bug.  It is a problem with the
scene.  How often do I have to explain this???")
http://news.povray.org/3bdf24b3$1@news.povray.org

Slow render time after several runs
(when stopped during radiosity calculations and restarted)
http://news.povray.org/3bd40c6d$1@news.povray.org

Crash with no objects in scene
(Doesn't happen on most people's machines. Only crashes on my machine
when bounding_threshold=0)
http://news.povray.org/3bd985b0@news.povray.org
(also reported as http://news.povray.org/3C19B9EA.D2E16FBC@gmx.de)

CSG difference with text
(Text objects appear to be very slightly tilted)
(Thorsten says its coincident surfaces)
http://news.povray.org/3c304eaf@news.povray.org

Julia object bug (Michael McKnight)
(Visually similar to coincident surfaces)
(Thorsten says the scene is absolutely unsuitable)
http://news.povray.org/3839f08c@news.povray.org

Problem with #read
(Thorsten says he assumes this is a user error)
http://news.povray.org/3c33b55d@news.povray.org

tiff problems in reading (including crash, including [doc])
(beta9: LZW decompression fails. 4-bit scrambles the colours. 1-bit and
24-bit upside down. JPG decompression crashes)
http://news.povray.org/n96b3uk1ft7mvb991s3htjt14ekb7j8fn7@4ax.com

Mapping warp and render window bugs
(Maximizing the render window during a trace will occasionally leave a
partial line of the checkerboard background visible)
http://news.povray.org/Xns9190F27EBFE9Bcsbhccse@204.213.191.226

Small window title bug
(Title switches back to "POV-Ray for Windows" after minimize or
restore.)
http://news.povray.org/3ba92966$1@news.povray.org

Heightfield bug (most probably an inverted normals problem)
http://news.povray.org/3c4ca8ff@news.povray.org

Black outline in smooth meshes
(The outline of smooth meshes exhibit black dots or areas (which go away
with double_illuminate))
(Thorsten says this is a special case of the "inverted normal" problem)
http://news.povray.org/3bf6794e$1@news.povray.org

Render Window Bug
(Render window pops up when application minimised, after which the
application doesn't open when clicked on the task bar.)
http://news.povray.org/3bde157e@news.povray.org

Povray main window disappears during rendering
(Possibly the same as the above)
http://news.povray.org/3c1350f4@news.povray.org

installer behaves strangely
(one would expect povray to install after pressing the "next" button and
not the "button")
http://news.povray.org/Xns916AE9B08012frankverlaathotmailc@204.213.191.2
26

Little render window bug?
(If either the width or the height of an image you're rendering is
bigger than the screen's size, then the sliders of the render windows
show in both (height and width) sizes and you can't see the full image
at once, even if one of the image_sizes is smaller than the screen)
http://news.povray.org/3c3746d6@news.povray.org

silly winpov bug
(Double clicking the title bar on some machines causes "text selection
not supported")
(Thorsten asks if this is fixed)
http://news.povray.org/3c3b7a3f@news.povray.org

bug : declared camera with normal statement crashes
http://news.povray.org/3C41A226.7030703@skynet.be

can't redefine identifier
(Parser fails to trap some attempts to illegally redefine functions)
http://news.povray.org/tis83ugh1kcc22h5o6is9qpkv61pjgunc0@4ax.com

[Windows] Save As... with same filename doesn't work
http://news.povray.org/3c44497e$1@news.povray.org

max_trace_level affects radiosity recursion_limit
((beta 10) max_trace_level sets an upper bound on recursion_limit)
(Thorsten say he doesn't like the example or the confirmation)
(Reconfirmed with new example: Xns### [at] 204213191226)
http://news.povray.org/3BE40295.6C3D54DE@engineer.com

Media visible container line in front of object
(a visible whitish line appears at the edge of a transparent container
box for media)
(Thorsten doesn't like the example or the confirmation)
http://news.povray.org/3bf45a3d@news.povray.org

media & fog bug?
(Thorsten doesn't like the confirmation)
http://news.povray.org/3c1379e0$1@news.povray.org

Funky fog vs. media
http://news.povray.org/3c642f94$1@news.povray.org

Re: Mosaic... some clarifications
(#local A2=P(1,2,3).hf; fails)
(Thorsten says it's not a bug)
http://news.povray.org/9n9j1uo0mdlrs4i5toupujr0pqrj4vvb8d@4ax.com

Re: hollow in light groups
http://news.povray.org/3c21172d$1@news.povray.org

Minor Windows annoyance
http://news.povray.org/3c2bec89@news.povray.org

Function declaration and namespace
http://news.povray.org/l2ji3uc2k9su99o2gct3n2thgqoq7f4pd5@4ax.com

splines - documentation and reality
http://news.povray.org/m7fq3u41ctia9e6i3tbnlstn6ek739vpke@4ax.com

Beta 10 bugs
(2.3 The inside_vector keyword is highlighted in the editor)
http://news.povray.org/Xns9197A5B08390CCQ@204.213.191.226

Mapping warp and render window bugs
(2. Maximizing the render window during a trace will occasionally leave
a partial line of the checkerboard background visible)
http://news.povray.org/Xns9190F27EBFE9Bcsbhccse@204.213.191.226

[win] "cpu time used" not works properly
(CPU time used not reported in stream when render completes normally.)
http://news.povray.org/llj84uk2findr74u9jpge6dlteqf19c70o@4ax.com

[std include] hf_* macros doubts
http://news.povray.org/1dtd4ug8htn1ns9md3vp9i1mbcq5qf10sb@4ax.com

another crash with max_intersections
(Note that setting "max_intersection 0" is simply brain-dead.)
http://news.povray.org/j8fo2u8mbo97gi3as0udmab7t9ttap2iom@4ax.com

Partial render memory leak
http://news.povray.org/3C47228A.D7680441@twoalpha.net

Axis_Rotate_Trans
(doesn't work with Axis = <-1, 1, -1>)
http://news.povray.org/3c47c315@news.povray.org

Re: IsoCacti.pov
(Falls foul of b10 camera syntax changes)
http://news.povray.org/1$sqAKA8LkR8Ewk5@econym.demon.co.uk

Insertmenu rerender - some strange scenes
(Fall foul of b10 camera syntax changes)
http://news.povray.org/3c492689@news.povray.org

continue trace fails with pngs
http://news.povray.org/3c487cf8@news.povray.org

Doc in Apple Help Viewer
(The POV-Ray documentation isn't listed in the "Help Center")
http://news.povray.org/B86F3A84.2A31%cwa### [at] gmxch

radiosity problem
http://news.povray.org/3c49968f@news.povray.org

<1, 0, 0> + 1*t
(Vector arithmetic using "t" behaves oddly)
(Thorsten says it's not a bug)
http://news.povray.org/3c4bb31d$1@news.povray.org

Initialisation of a 4-vector array
(Vector arithmetic using "t" behaves oddly)
(Thorsten says it's not a bug)
http://news.povray.org/3c4fe83b@news.povray.org

Beta10-Linux Segmentation Fault
(while sorting photons)
http://news.povray.org/3C4D93F1.2000005@gmx.de
Fatal error.
(while sorting protons)
http://news.povray.org/3bb5d946$1@news.povray.org

[wingui] EAccess violation
(POV reopenned with scene file network disk unmapped)
http://news.povray.org/krjv4u0lvc9k5h9hm05hk6onvvh43phqle@4ax.com

rare conic prism bug
(strange behaviour of illumination/texture of conic prisms)
(Thorsten doesn't like the confirmation)
http://news.povray.org/3C51212E.9090707@irrwerk.de

macros without commas takes parameter wrongly
(Thorsten say's its not abug)
http://news.povray.org/bp925u4upa1gl9kih2pikg4qusf0lr03kg@4ax.com

[scenes] Beta 10 syntax changes
http://news.povray.org/joMfFCAyfTS8EwOo@econym.demon.co.uk

Shadow faults
(Thorsten says it's not a bug)
http://news.povray.org/3c53b38e@news.povray.org

crash during radiosity pretrace
http://news.povray.org/3C517D27.54270E7@gmx.de

Reallocing Finite with extension (with crash)
http://news.povray.org/8laa5us450irp75g6l2i4e84dm1c4v4i01@4ax.com

camera declaration
(different apparent camera angle by declaring a camera)
http://news.povray.org/3c5553fb@news.povray.org

[win] ini dlg crash - stack overflow
http://news.povray.org/3c57985c$1@news.povray.org

Radiosity samples during pretrace.
(Radiosity samples taken during pretrace step are not restored if
rendering is aborted.)
http://news.povray.org/3c587c7a@news.povray.org

-GA causes winpov to clear between frames
http://news.povray.org/3c61aed7@news.povray.org

long function with crash
(POV doesn't check when the max VM code is exceeded)
http://news.povray.org/8pe56usuudisacgrocav0l0ovqvetsno83@4ax.com



        FIXED IN NEXT BETA

Camera is off by half a pixel (job000209)
http://news.povray.org/3bccc696@news.povray.org
(possibly the same as: the lowest pixel getting dimmed)
http://news.povray.org/3c23cd13@news.povray.org

How to Unexpire POV Ray Beta
(Beta expiry code is insufficiently secure)
http://news.povray.org/3c453246@news.povray.org

Wrong highlighting in editor
(function_id)
http://news.povray.org/jfji3ug1faevn1jk3mlko64sb71ptmmn97%404ax.com
 
crash during debugging of parsing (job0205)
http://news.povray.org/332m2uspk9nfqfq6g7oc8qtmkcu5higjs7@4ax.com

#while crash..
(Thorsten says he assumes it's the same as job00205)
http://news.povray.org/3c38646f@news.povray.org

crash with loop (job000205)
(infinite loop of "#local"s causes stack fault)
http://news.povray.org/3c2cb9b7@news.povray.org

crash with some boxes /infinite boxes
(Thorsten says it's not a bug)
(Ron Parker says he's fixed it)
http://news.povray.org/3c375d62$1@news.povray.org

uv-mapping on bicubic_patch
http://news.povray.org/3C5F1E36.C7C513A3@amc.uva.nl

Still a first function initialisation error?
http://news.povray.org/3C612786.9000004@reading.ac.uk

        FIXED IN BETA AFTER NEXT

Array assignment crash (job000203)
(It should overwrite the old array with the newly created, correct
array, but crashes)
http://news.povray.org/3bcc54ab$1@news.povray.org

#macro crush (job000206)
http://news.povray.org/3c2c78cf$1@news.povray.org

Bicubic Patch bug
(problem with comma parsing)
http://news.povray.org/3c65d8af@news.povray.org


-- 
Mike Williams
Gentleman of Leisure


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From: bob h
Subject: Re: Known bugs 11 Feb 2002
Date: 11 Feb 2002 06:09:54
Message: <3c67a682@news.povray.org>
For what its worth... WinXP, P3, 512MB... still happening in beta 11
(Intel):

Highlight bug #10 (job000137)
(highlights are sometimes visible where they should be in shadow)
http://news.povray.org/3bb4cf08@news.povray.org
{this still seems normals-based to me, not finishes specular
 or phong highlights. but then what do I know ;-)
applying interior_texture without normal or leaving normal
out of the main texture alleviates the problem}

crash inside two #while
(Possibly specific to Windows 2000)
(Thorsten says it's the same as job000179)
http://news.povray.org/3c3f1f29$1@news.povray.org
{yep still crashes, here anyway, and does appear to be the
'something to the power of something' in #while bug
of  job000179 except that one doesn't crash anymore}

panoramic projection bug? (job000196)
(In progress)
http://news.povray.org/avnfut8fof5ualgf8hnrtpl1knlg8828sp@4ax.com
{yes, angle keyword working only if before panoramic keyword}

no_image, merge and shadows (job000198)
(setting no_image to an object in a merge causes that object to stop
casting shadows)
http://news.povray.org/vqfd0ucm5276q9j8sdh34afjliapc1kj0n@4ax.com
{still so, yes}

bug in sphere_sweep for removing parts of an object (job000200)
(discontinuous normals on inverse of sphere_sweep)
http://news.povray.org/3C1A5D47.EA38F6E5@amc.uva.nl
{appears to be normals all right, as evidenced by slicing of the box
in various places, but it's an odd sort of thing with shape.  to clarify,
I could see bevelling along the cut even though the cut itself was
still a perfectly good sphere_sweep surface line}

crash with photons, union, ior, lathe (job000213)
(Intel compile only)
http://news.povray.org/vfra4u0ndv4rf951196881cpt842an4906@4ax.com
{sure does, didn't even leave error message behind}

bug : declared camera with normal statement crashes
http://news.povray.org/3C41A226.7030703@skynet.be
{indeed it does}

[Windows] Save As... with same filename doesn't work
http://news.povray.org/3c44497e$1@news.povray.org
{note that I, bob h, don't see this as a bug at all.
there isn't a crash or error really, just by design}

Re: hollow in light groups
http://news.povray.org/3c21172d$1@news.povray.org
{yes, the camera not in hollow object message still given}

Minor Windows annoyance
http://news.povray.org/3c2bec89@news.povray.org
{note that the 'tip of the day' didn't show when I restored POV-Ray.
that seems the only thing about this, otherwise fine}

Funky fog vs. media
http://news.povray.org/3c642f94$1@news.povray.org
{only a strange red background occurance happens when I check,
otherwise no fog+media problem seen here. the red is due to lack
of fog_alt and fog_offset apparently}

***************************************************

Fixed?:

Light_sources in light_groups don't cast shadows (job000197)
(rendering without light buffers (-UL) puts the shadows back)
http://news.povray.org/3bfd4d63@news.povray.org
{shadows there, whether -ul or +ul used}

Povray main window disappears during rendering
(Possibly the same as the above {not here})
http://news.povray.org/3c1350f4@news.povray.org
{this one only happened to me a couple times in beta 10, and I don't
think any of the supposed related minimized trouble happened.
seemed more a Windows tasking thing to me though}

Hopefully this will help at least a little to let everyone know what's being
experienced by others, such as me.

bob h


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