POV-Ray

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.

IDCategoryTask TypeReported InPrioritySeveritySummaryStatus  ascProgressDue In Version
334Texture/Material/FinishFeature Request3.70 releaseVery LowLowHLS colorsTracked on GitHub
0%
Task Description

It would be nice to be able to specify colors in HLS as well as RGB.

Currently, you can use a macor to convert individual colors. But this does not work in color_maps where you want smooth gradations/interpolations between two or several colors.

335Parser/SDLPossible Bug3.70 releaseVery LowLowmacro works in variable but not in arrayTracked on GitHub
0%
Task Description

This doesn’t work:

#declare pavement_object = array[2]
{

object {trash_can_macro()	scale 3/4			translate -x * 1/2},
object {potted_plant_macro(_CT_rand2)	scale 3/4	scale 3/2	translate -x * 1/2}

}

This does work:

#declare trash_can_object = object {trash_can_macro()};
#declare potted_plant_object = object {potted_plant_macro(_CT_rand2)};
#declare pavement_object = array[2]
{

object {trash_can_object	scale 3/4			translate -x * 1/2},
object {potted_plant_object	scale 3/4	scale 3/2	translate -x * 1/2}

}

Logically, I cannot see a reason for this to be so.

26Geometric PrimitivesDefinite Bug3.61Very LowLowArtifacts rendering a cloth which has two-side texturesTracked on GitHub
0%
Future release Task Description

Dear PovRay maintainers and developers, congratulations for your great RayTracer!

We think that we have found a bug while we were rendering a piece of cloth.

In this piece of cloth were defined two textures, one for one side and one for the another side:

  texture { mesh_tex0_0 }
  interior_texture { mesh_tex0_1 }
  • Please: Look at line 77414 of the attached file “test.pov” to see

these definitions in their original context.

We have found some artifacts in the final rendering, in concrete near some wrinkles,
please, look at the attached file “render_artifacts.tga”, I have painted a big green arrow
near the artifacts, maybe you’ll need to do a zoom to see them more accurately.

They are as though the texture of the other side was painted in the incorrect side.

Fortunately, we have a patch to fix this bug (thanks to Denis Steinemann, he made the
implementation for PovRay 3.5, so I have adapted these changes to release 3.6.1)

Although we have found this bug in the Windows and Linux 3.6.1 releases,
the patch was generated in Linux (using the source code release of “povray-3.6.1”).

To apply this patch, inside the parent folder of the directory “povray-3.6.1” execute:

            patch -p0 < other_side_artifacts.patch

And the “povray-3.6.1” will be patched and you will get a console output like this:

 patching file povray-3.6.1/source/lighting.cpp
 patching file povray-3.6.1/source/mesh.cpp
 patching file povray-3.6.1/source/render.cpp

We don’t know if this “hack” is enough smart to apply in the next release,
but we think that it fixes the bug (the artifacts dissapear).

Best regards and thank you very much for your great RayTracer!

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