CyclesProject
ActivePublic

Properties

Description

What is Cycles?
Cycles is a ray tracing renderer focused on interactivity and ease of use, while still supporting many production features.

Contacts

Documentation
Manuals for both Artists and Developers are available.

Development
Cycles is officially under the Blender Foundation umbrella, and so is developed on developer.blender.org. Source code is available either as standalone repository or as bundled into Blender sources.

To clone Cycles together with blender please consult BF Blender project.

To clone Cycles source from stadalone repository as read-only use:

git clone git://git.blender.org/cycles.git

To clone as read-write (needs ssh key):

git clone git@git.blender.org:cycles.git

Browse code
Online browse of sources is available for:

Module Owners: @Brecht Van Lommel (brecht) @Thomas Dinges (dingto) @Sergey Sharybin (sergey)
Developer Members: @Lukas Stockner (lukasstockner97) @Mai Lavelle (maiself) @Dalai Felinto (dfelinto) @Stefan Werner (swerner) @Alexander Gavrilov (angavrilov) @Martijn Berger (juicyfruit) @Nathan Letwory (jesterking)
User Members: @Matt Heimlich (m9105826) @Marco G (marcog)

Recent Activity

Yesterday

Bastien Montagne (mont29) closed T51542: Cycles nodes.cpp suggestion as "Invalid".

More than a week without reply. Due to the policy of the tracker archiving for until required info/data are provided.

Sat, May 27, 6:52 PM · Cycles
Bastien Montagne (mont29) closed T51634: Cycles Clamp Considerations as "Invalid".

Thanks for the suggestion, but we do not accept feature requests or suggestions on this tracker (use forums or bf-funboard ML for that).

Sat, May 27, 2:49 PM · Cycles, BF Blender
Aaron Carlisle (Blendify) accepted D2689: add limitation info.
Sat, May 27, 4:07 AM · Cycles, Documentation
Caetano (Caetano) added a comment to D2689: add limitation info.

Actually I would correct "mesh datablocks" to "object data" since it doesn't only apply to meshes but also curves, surfaces and text objects.

Sat, May 27, 12:26 AM · Cycles, Documentation
Caetano (Caetano) added a reviewer for D2689: add limitation info: Aaron Carlisle (Blendify).
Sat, May 27, 12:16 AM · Cycles, Documentation
Caetano (Caetano) updated the summary of D2689: add limitation info.
Sat, May 27, 12:12 AM · Cycles, Documentation
Caetano (Caetano) added a project to D2689: add limitation info: Cycles.
Sat, May 27, 12:04 AM · Cycles, Documentation

Fri, May 26

Chris Cook (CCook) changed Type from Bug to Design on T51634: Cycles Clamp Considerations.
Fri, May 26, 3:22 PM · Cycles, BF Blender
Chris Cook (CCook) created T51634: Cycles Clamp Considerations.
Fri, May 26, 1:43 PM · Cycles, BF Blender
Alex P (eneen) added a comment to T50458: Hosek/Wilkie sky model weird coloration.

I think it's related:
Luxrender currently has option for custom ground color, really nice feature for larger scenes where there is need to model plane to hide sky leaking from ground. It works independently to albedo.

Fri, May 26, 11:38 AM · Cycles, Rendering, BF Blender

Thu, May 25

Alan Taylor (skororu) closed T51606: Immediate crash when switching to rendered viewport shading, Cycles, Mac as "Resolved".
Thu, May 25, 9:23 AM · Platform: Mac OS X, Cycles, BF Blender
Mai Lavelle (maiself) closed T49465: Cycles OpenCL throws CL_INVALID_BUILD_OPTIONS on AMD R9 280x on Linux as "Invalid".

Closing for a few reasons:

Thu, May 25, 3:41 AM · Cycles, BF Blender
Mai Lavelle (maiself) merged T51442: Compiling OpenCL program base: CL_DEVICE_NOT_AVAILABLE into T49465: Cycles OpenCL throws CL_INVALID_BUILD_OPTIONS on AMD R9 280x on Linux.
Thu, May 25, 3:19 AM · Cycles, BF Blender

Wed, May 24

Alma Talp (AlmaTalp) added a comment to T51554: OpenCL render error with example.

BTW, have you tried with a former Blender version like 2.78a release (hash:e8299c8) on Win7 64 Pro and RX 480?

Wed, May 24, 10:31 PM · BF Blender, Cycles
LazyDodo (LazyDodo) closed T51579: Crash immediately while trying to Cycle-Render imported *.obj Objects from SILO as "Resolved".
Wed, May 24, 7:15 PM · Cycles, BF Blender
Martin (MEDT) added a comment to T51579: Crash immediately while trying to Cycle-Render imported *.obj Objects from SILO.

Yes!

Wed, May 24, 7:12 PM · Cycles, BF Blender
LazyDodo (LazyDodo) added a comment to T51579: Crash immediately while trying to Cycle-Render imported *.obj Objects from SILO.

so problem is fixed?

Wed, May 24, 6:55 PM · Cycles, BF Blender
Martin (MEDT) added a comment to T51579: Crash immediately while trying to Cycle-Render imported *.obj Objects from SILO.

@LazyDodo (LazyDodo)
What build do you want?
I just tested Blender
2.78 2017-05-23 15.27 7b25ffb
2.80 2017-05-23 16:39 eef9277
and it worked fine too.

Wed, May 24, 6:51 PM · Cycles, BF Blender
Alan Taylor (skororu) edited the description of T51606: Immediate crash when switching to rendered viewport shading, Cycles, Mac.
Wed, May 24, 12:18 PM · Platform: Mac OS X, Cycles, BF Blender
Alan Taylor (skororu) created T51606: Immediate crash when switching to rendered viewport shading, Cycles, Mac.
Wed, May 24, 12:17 PM · Platform: Mac OS X, Cycles, BF Blender
Pascal Schön (VanCantus) added a comment to T51589: Principled Subsurface Scattering, wrong shadow color.

For your other issue, I added a new Diff (D2685) which corrects it.

Wed, May 24, 8:45 AM · Cycles, BF Blender
Pascal Schön (VanCantus) added a comment to T51589: Principled Subsurface Scattering, wrong shadow color.

I added a fix for this problem. It was just a small problem for diffuse ancestors. Here I was setting the subsurface value to 0.0 which led to a principled diffuse shader closure call. Here the base color was used to evaluate the closure. I just needed to set the mixed color to base color in this case.

Wed, May 24, 7:51 AM · Cycles, BF Blender
Diffusion closed T51589: Principled Subsurface Scattering, wrong shadow color as "Resolved" by committing rBe20a33b89d75: Fix T51589: Principled Subsurface Scattering, wrong shadow color.
Wed, May 24, 7:47 AM · Cycles, BF Blender
Jakub Vondra (wondrs) removed a watcher for Cycles: Jakub Vondra (wondrs).
Wed, May 24, 2:17 AM

Tue, May 23

daniel (midan) added a comment to T43835: strange cracks appear on model.

the problem still occurs in latest build 9b29233

Tue, May 23, 6:22 PM · Cycles, BF Blender

Mon, May 22

LazyDodo (LazyDodo) added a comment to T51579: Crash immediately while trying to Cycle-Render imported *.obj Objects from SILO.

so 2.78c is fine, but the builds from builder.blender.org crash?

Mon, May 22, 11:39 PM · Cycles, BF Blender
Martin (MEDT) added a comment to T51579: Crash immediately while trying to Cycle-Render imported *.obj Objects from SILO.

The latest stable release renders.

Mon, May 22, 8:11 PM · Cycles, BF Blender
Sergey Sharybin (sergey) added a comment to T51579: Crash immediately while trying to Cycle-Render imported *.obj Objects from SILO.

Please don't mix multiple reports into a single one, reports unrelated issues as separate reports. Otherwise things runs out of control quite quick.

Mon, May 22, 7:54 PM · Cycles, BF Blender
Martin (MEDT) added a comment to T51579: Crash immediately while trying to Cycle-Render imported *.obj Objects from SILO.

I checked these objects and tried to delete all their vertices with blender.
But some vertices are not deleteable!
But now, with these undeleteable vertices it is possible to render.

Mon, May 22, 7:41 PM · Cycles, BF Blender
Martin (MEDT) added a comment to T51579: Crash immediately while trying to Cycle-Render imported *.obj Objects from SILO.

Now it is the second bug I got with my GTX 1070. ( The first one: Unable to render volumetics T50808)
Is there still a problem with the card drivers? Should I contact NVIDIA?
What is the difference between Luxrender, Blender Render and Cycles - CUDA?

Mon, May 22, 6:32 PM · Cycles, BF Blender
Sergey Sharybin (sergey) triaged T51581: If a thin mesh has world background around it then the denoiser is not denoising that mesh as "Normal" priority.

@Lukas Stockner (lukasstockner97), mind having a look here? :)

Mon, May 22, 5:38 PM · Cycles, BF Blender
Sergey Sharybin (sergey) added a project to T51589: Principled Subsurface Scattering, wrong shadow color: Cycles.
Mon, May 22, 5:37 PM · Cycles, BF Blender
Aaron Carlisle (Blendify) raised the priority of T51581: If a thin mesh has world background around it then the denoiser is not denoising that mesh from "Incomplete" to "Needs Triage".
Mon, May 22, 5:24 PM · Cycles, BF Blender
Aaron Carlisle (Blendify) edited projects for T51579: Crash immediately while trying to Cycle-Render imported *.obj Objects from SILO, added: BF Blender, Cycles; removed Import/Export, Addons.
Mon, May 22, 5:20 PM · Cycles, BF Blender
Sergey Sharybin (sergey) closed T51568: CUDA error: Illegal address in cuCtxSynchronize(), line 1366 as "Resolved" by committing rB34b689892b29: Fix T51568: CUDA error in viewport render after fix for for OpenCL.
Mon, May 22, 12:29 PM · Cycles, BF Blender
bigbad (bigbad) edited the description of T51581: If a thin mesh has world background around it then the denoiser is not denoising that mesh.
Mon, May 22, 10:50 AM · Cycles, BF Blender
bigbad (bigbad) added a comment to T51581: If a thin mesh has world background around it then the denoiser is not denoising that mesh.

Thanks for the report but it would be helpful if you add a blend-file to the report that demonstrates the issue at hand.

Mon, May 22, 10:50 AM · Cycles, BF Blender
Steffen Dünner (SteffenD) added a comment to T50166: Cycles - Viewport render preview stucked on the first sample - in a scene a DupliVerts objet parenting instances owned by more than one Groups.

I can confirm it with the very latest Buildbot build.

Mon, May 22, 10:27 AM · BF Blender, Cycles
Lukas Stockner (lukasstockner97) closed T51583: Denoising produces a lot of artifacts when a low neighbor weighting value is used as "Invalid".

I'd like to fix that, but this is just a basic tradeoff in the denoising algorithm - if you allow fairly different-looking areas to be combined, the result will be smooth. If you only use pixel blocks that look similar, you get nicer reflections etc., but since the denoiser can't use as much information, other areas are still a bit noisy.

Mon, May 22, 6:39 AM · Cycles, BF Blender
Aaron Carlisle (Blendify) assigned T51581: If a thin mesh has world background around it then the denoiser is not denoising that mesh to Lukas Stockner (lukasstockner97).
Mon, May 22, 5:23 AM · Cycles, BF Blender
Aaron Carlisle (Blendify) assigned T51583: Denoising produces a lot of artifacts when a low neighbor weighting value is used to Lukas Stockner (lukasstockner97).
Mon, May 22, 4:55 AM · Cycles, BF Blender
Fable Fox (fablefox) closed T51342: Crash when applying materials to curves as "Invalid".
Mon, May 22, 4:02 AM · Cycles, BF Blender
Fable Fox (fablefox) added a comment to T51342: Crash when applying materials to curves.
  1. not much activity
  2. no blend file provided
  3. user try to recreate but it DIDN'T crash.
Mon, May 22, 4:02 AM · Cycles, BF Blender
Adam Friesen (ace_dragon) added a comment to T51583: Denoising produces a lot of artifacts when a low neighbor weighting value is used.

To give a good reason why this issue should be fixed (as opposed to just telling people not to lower the weight value below 0.5), take a look at the following image.

Mon, May 22, 3:49 AM · Cycles, BF Blender
Adam Friesen (ace_dragon) created T51583: Denoising produces a lot of artifacts when a low neighbor weighting value is used.
Mon, May 22, 1:56 AM · Cycles, BF Blender
Aaron Carlisle (Blendify) abandoned D1995: Parametric Geometry coordinates for point and area lights in Cycles.

Closing

Mon, May 22, 12:14 AM · Cycles

Sun, May 21

Lukas Stockner (lukasstockner97) closed T51567: Denoising passes get inappropriate values with a volume in front. as "Resolved".

Fixed with rB3bf69b26ef8c, thanks for the report.

Sun, May 21, 5:48 AM · Cycles, BF Blender

Sat, May 20

Alma Talp (AlmaTalp) added a comment to T51548: Cycles shading error.

Hello Sergey,

Sat, May 20, 5:38 PM · BF Blender, Cycles
Sergey Sharybin (sergey) updated subscribers of T51568: CUDA error: Illegal address in cuCtxSynchronize(), line 1366.

Interesting. @Mai Lavelle (maiself) might also be interested to look here then.

Sat, May 20, 3:44 PM · Cycles, BF Blender
Erdinç (erdinc) added a comment to T51568: CUDA error: Illegal address in cuCtxSynchronize(), line 1366.

Same issue here,
It has broken after this commit.
https://git.blender.org/gitweb/gitweb.cgi/blender.git/commit/177385dc439b4f6b478a033413a8df992e7f5ed3

Sat, May 20, 3:23 PM · Cycles, BF Blender