CyclesProject
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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

Today

LazyDodo (LazyDodo) added a commit to T52845: JPEG 2000 Images rendering pink on macOS - Cycles: rBL61951: [msvc] add support for jpeg2000 in oiio to resolve T52845 on windows. .
Fri, Sep 22, 9:58 PM · Cycles, BF Blender
Arto Kitula (akitula) closed T52845: JPEG 2000 Images rendering pink on macOS - Cycles as "Resolved" by committing rBL61950: Added OpenJPEG support to OIIO. Fixes T52845..
Fri, Sep 22, 8:50 PM · Cycles, BF Blender
mathieu menuet (bliblubli) edited projects for T52877: OpenCL render somtime idles on one tile with BPT, added: Cycles; removed BF Blender.
Fri, Sep 22, 8:11 PM · Cycles
Emmanuel LORANT (asturias) added a comment to T52572: CUDA Error.

Well, I got a clue : in my scene, I use Principled BSDF with Subsurface at 1.000. By turning down the Subsurface at 0, it works.

Fri, Sep 22, 7:03 PM · Cycles, BF Blender
Emmanuel LORANT (asturias) added a comment to T52572: CUDA Error.

For me, it still even worse with 385.69 NVidia drivers. Blender crashes instead of giving the error and a file that worked with previous version of drivers crashes now :(.

Fri, Sep 22, 6:31 PM · Cycles, BF Blender
Maeldor (Maeldor) added a comment to T52572: CUDA Error.

UPDATE:
Yesterday I installed the newest Nvidia Driver: 385.69
this seemed to fix the crash.
agent 327 renders fine on gpu even with larger tile sizes (though 256x256 lead to blender crashing completely -> other topic)

Was hopeful at reading this, but unfortunately it has made absolutely no difference for me. I even used DDU to reinstall from scratch to be safe, but I'm still having the exact same problem, so I guess you're lucky if you're not having the problem anymore!

Fri, Sep 22, 6:18 PM · Cycles, BF Blender
Kayran Schmidt (Winnetou) added a comment to T52572: CUDA Error.

UPDATE:
Yesterday I installed the newest Nvidia Driver: 385.69
this seemed to fix the crash.
agent 327 renders fine on gpu even with larger tile sizes (though 256x256 lead to blender crashing completely -> other topic)

Fri, Sep 22, 2:41 PM · Cycles, BF Blender
stephen thomas (stephenthomas0) added a comment to T52845: JPEG 2000 Images rendering pink on macOS - Cycles.

No problem at all, I'd already converted the image sequence into a ProRes clip to finish off the shot, just wanted to report the bug 👍

Fri, Sep 22, 11:19 AM · Cycles, BF Blender
Yaroslav Vasilyev (bso) edited the description of T52868: 2.79 EXCEPTION_ACCESS_VIOLATION on render with Cycles but viewport works.
Fri, Sep 22, 1:10 AM · Cycles, BF Blender
Vuk Gardašević (lijenstina) edited the description of T52868: 2.79 EXCEPTION_ACCESS_VIOLATION on render with Cycles but viewport works.
Fri, Sep 22, 1:08 AM · Cycles, BF Blender

Yesterday

Arto Kitula (akitula) raised the priority of T52845: JPEG 2000 Images rendering pink on macOS - Cycles from "Normal" to "Confirmed".

It is OIIO thing. For now, you need now to use other format for the images, sorry for inconvenience caused.

Thu, Sep 21, 5:03 PM · Cycles, BF Blender
Arto Kitula (akitula) added a comment to T52845: JPEG 2000 Images rendering pink on macOS - Cycles.

Yeah, now confirmed.
Textures are found, you can see them in textured/material viewport, but moment you hit cycles on, you can see nothing but pink panther's back.

Thu, Sep 21, 3:59 PM · Cycles, BF Blender
stephen thomas (stephenthomas0) added a comment to T52845: JPEG 2000 Images rendering pink on macOS - Cycles.

Apologies, I was trying lots of different things (packing/unpacking) to figure out what specifically was causing the problem, so the .001 may be a bit of a red herring...

Thu, Sep 21, 3:45 PM · Cycles, BF Blender
Arto Kitula (akitula) added a comment to T52845: JPEG 2000 Images rendering pink on macOS - Cycles.

The BKE_image_user_file_path() gives:

Thu, Sep 21, 3:30 PM · Cycles, BF Blender
Kayran Schmidt (Winnetou) added a comment to T52572: CUDA Error.

hi, I can confirm this error too.
win 10 64 bit
gtx 1080 Overclocked at ~2100MHz when rendering with overclocked VRAM
blender 2.79

Thu, Sep 21, 2:40 PM · Cycles, BF Blender
stephen thomas (stephenthomas0) added a comment to T52845: JPEG 2000 Images rendering pink on macOS - Cycles.

Yes, sounds plausable. The project was originally made on a Ubuntu machine, no problems. The image texture node was referencing an image sequence. Opening on macOS, without any changes (I was going to set it rendering), it was pink. Importing a single JP2000 image on macOS worked ok...

Thu, Sep 21, 1:24 PM · Cycles, BF Blender
Sergey Sharybin (sergey) added a comment to T52845: JPEG 2000 Images rendering pink on macOS - Cycles.

OIIO doesn't do image sequence manipulation, it's operating on file paht given to it as-is. Can you verify whether image_user_file_path() is giving a correct file name?

Thu, Sep 21, 1:23 PM · Cycles, BF Blender
Arto Kitula (akitula) added a comment to T52845: JPEG 2000 Images rendering pink on macOS - Cycles.

As in screenshot, image that is tried to read is : 05_3c_00000.jp2.001 , if you select 05_3c_00000.jp2, you'll get the texture correctly. So problem is not OIIO OpenJpeg2000 support. Something else is going on. Image sequence trying to increment the extension? (wild guess)

Thu, Sep 21, 1:17 PM · Cycles, BF Blender
Sergey Sharybin (sergey) assigned T52845: JPEG 2000 Images rendering pink on macOS - Cycles to Arto Kitula (akitula).

Works on Linux. Wondering whether macOS version of OIIO is compiled with OpenJpeg2000 support?

Thu, Sep 21, 9:59 AM · Cycles, BF Blender

Wed, Sep 20

Brecht Van Lommel (brecht) added a revision to T52853: [ctest/Cycles_render_test] autosmooth_custom_normals test failing.: D2850: Windows: for background mode, don't show error popups for crashes..
Wed, Sep 20, 9:12 PM · Restricted Project, Cycles
LazyDodo (LazyDodo) added a comment to T52854: [ctest/cycles_reports] T52368 fails on x86.

Forgot to mention it, but the difference image being all black seems fishy as well?

Wed, Sep 20, 8:16 PM · Restricted Project, Cycles
Brecht Van Lommel (brecht) closed T52854: [ctest/cycles_reports] T52368 fails on x86 as "Resolved".

This should be fixed by rB18a353dd2422: Fix T52368: Cycles OSL trace() failing on Windows 32 bit., I mentioned the wrong report number in that commit.

Wed, Sep 20, 8:14 PM · Restricted Project, Cycles
Brecht Van Lommel (brecht) reassigned T52852: Assert in looptri calculation after recent changes from Sergey Sharybin (sergey) to Bastien Montagne (mont29).

This is new code from rB9591b5f6182f: Fix T52816: regression can't open file in 2.79 (crash)..

Wed, Sep 20, 8:11 PM · BF Blender
Brecht Van Lommel (brecht) added a commit to T52368: OSL trace not working in 2.79 RC!: rB18a353dd2422: Fix T52368: Cycles OSL trace() failing on Windows 32 bit..
Wed, Sep 20, 8:01 PM · Cycles, BF Blender: Regressions, BF Blender
Brecht Van Lommel (brecht) closed T52853: [ctest/Cycles_render_test] autosmooth_custom_normals test failing. as "Resolved" by committing rB14223357e593: Fix T52853: harmless Cycles test failure in debug mode..
Wed, Sep 20, 8:01 PM · Restricted Project, Cycles
LazyDodo (LazyDodo) assigned T52853: [ctest/Cycles_render_test] autosmooth_custom_normals test failing. to Sergey Sharybin (sergey).
Wed, Sep 20, 7:17 PM · Restricted Project, Cycles
LazyDodo (LazyDodo) assigned T52852: Assert in looptri calculation after recent changes to Sergey Sharybin (sergey).
Wed, Sep 20, 7:16 PM · BF Blender
LazyDodo (LazyDodo) claimed T52856: [ctest/cycles_bake_test] bake_zspan_watertight fails with msvc 2015/x64.

Seems very specific to this one msvc flavor, will investigate when i have time.

Wed, Sep 20, 7:07 PM · Restricted Project, Cycles
LazyDodo (LazyDodo) created T52856: [ctest/cycles_bake_test] bake_zspan_watertight fails with msvc 2015/x64.
Wed, Sep 20, 7:07 PM · Restricted Project, Cycles
LazyDodo (LazyDodo) created T52854: [ctest/cycles_reports] T52368 fails on x86.
Wed, Sep 20, 7:01 PM · Restricted Project, Cycles
LazyDodo (LazyDodo) edited the description of T52853: [ctest/Cycles_render_test] autosmooth_custom_normals test failing..
Wed, Sep 20, 6:18 PM · Restricted Project, Cycles
LazyDodo (LazyDodo) added a comment to T52853: [ctest/Cycles_render_test] autosmooth_custom_normals test failing..

the same assert triggers in tangent_triangles of the cycles_shader_tangent_test

Wed, Sep 20, 6:18 PM · Restricted Project, Cycles
LazyDodo (LazyDodo) created T52853: [ctest/Cycles_render_test] autosmooth_custom_normals test failing..
Wed, Sep 20, 5:42 PM · Restricted Project, Cycles
LazyDodo (LazyDodo) created T52852: Assert in looptri calculation after recent changes.
Wed, Sep 20, 5:36 PM · BF Blender
Dalai Felinto (dfelinto) raised the priority of T52802: Denoise artifacts with Direct Glossy from "Normal" to "Confirmed".
Wed, Sep 20, 3:55 PM · Cycles, BF Blender
Lukas Stockner (lukasstockner97) added a comment to T52802: Denoise artifacts with Direct Glossy.

Perhaps the denoising should work on log(glossy) or some other kind of remapping to bring the extreme values into a smaller range.

Wed, Sep 20, 3:34 PM · Cycles, BF Blender
stephen thomas (stephenthomas0) created T52845: JPEG 2000 Images rendering pink on macOS - Cycles.
Wed, Sep 20, 12:01 PM · Cycles, BF Blender

Tue, Sep 19

Bernd (waebbl) added a comment to T52793: Blender crashes when changing viewport shading to rendered.

I just booted up my linux box, downloaded the current stable release and tried the tower_packed.blend file. Here it doesn't crash when I switch viewport, but I haven't updated nvidia-drivers yet, using 378.13 here. Haven't used linux for some time. I'm running gentoo, there's no relevant output on the terminal.
I'm off until sunday, when I'm back, I'll go and update the nvidia driver and report back on the behaviour.
HTH

Tue, Sep 19, 8:15 PM · Cycles, BF Blender
Bernd (waebbl) added a comment to T52793: Blender crashes when changing viewport shading to rendered.

Here's the output when starting it from the terminal:

Tue, Sep 19, 6:43 AM · Cycles, BF Blender
Brecht Van Lommel (brecht) added a comment to T52725: Branched path unification.

Here's a comparison using a shot from Agent, where branched path is the clear winner:

PathBranched Path
Tue, Sep 19, 1:50 AM · Cycles
Brecht Van Lommel (brecht) added a comment to D2726: Principled BSDF as default shader in Cycles.

Yes, you can change the default in master and blender2.8 now, but note:

Tue, Sep 19, 1:15 AM · Cycles

Mon, Sep 18

Vuk Gardašević (lijenstina) closed T52820: Blender 2.8 Cycles Viewport Stops Rendering after Setting up Camera Tracking Scene as "Archived".

Thank you for the report. Currently we are aware of many issues in 2.8 and actively working to fix them.
But since replying to reports takes time, we have decided to limit bug reports to module team members.

Mon, Sep 18, 9:31 PM · Cycles, BF Blender: 2.8
Caden Mitchell (CadenMitchell) renamed T52820: Blender 2.8 Cycles Viewport Stops Rendering after Setting up Camera Tracking Scene from "Blender 2.8 Cycles Stops Rendering after Setting up Camera Tracking Scene" to "Blender 2.8 Cycles Viewport Stops Rendering after Setting up Camera Tracking Scene".
Mon, Sep 18, 9:20 PM · Cycles, BF Blender: 2.8
Caden Mitchell (CadenMitchell) created T52820: Blender 2.8 Cycles Viewport Stops Rendering after Setting up Camera Tracking Scene.
Mon, Sep 18, 9:19 PM · Cycles, BF Blender: 2.8
Bernd (waebbl) added a comment to T52793: Blender crashes when changing viewport shading to rendered.

I figured out how to pack all files into the .blend file. So please try the attached file.

Mon, Sep 18, 8:27 PM · Cycles, BF Blender
Bernd (waebbl) added a comment to T52793: Blender crashes when changing viewport shading to rendered.

There's only one texture used that I'm aware of, the environment texture. I used one from the sIBL archive at https://www.hdrlabs.com/sibl/archive.html and append it here, if it's what you're referring to.

Mon, Sep 18, 6:47 PM · Cycles, BF Blender
Dalai Felinto (dfelinto) triaged T52802: Denoise artifacts with Direct Glossy as "Normal" priority.

Changing priority to Normal, until @Lukas Stockner (lukasstockner97) confirms that this is a bug.

Mon, Sep 18, 3:24 PM · Cycles, BF Blender
Emmanuel LORANT (asturias) added a comment to T52572: CUDA Error.

Hi, I have this too.

Mon, Sep 18, 3:07 PM · Cycles, BF Blender
Sergey Sharybin (sergey) added a comment to T52572: CUDA Error.

@Maeldor (Maeldor), yes, should be bmw27_gpu. And you're right about --factory-startup. Let's do this way then: backup your settings, load factory startup, enable CUDA and then try rendering from terminal.

Mon, Sep 18, 3:02 PM · Cycles, BF Blender
YAFU (YAFU) added a comment to T52572: CUDA Error.

Hi.
I have read before that the mere fact of having installed some GPU overclocking application can bring conflicts with Blender, even for CPU render. I say this because I read above about MSI Afterburner. So just in case to do reliable tests, if you have any of them installed (MSI Afterburner, ASUS GPU Tweak, etc.), completely remove the application.

Mon, Sep 18, 2:59 PM · Cycles, BF Blender