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Today

Richard Antalik (ISS) merged T98203: Potential Memory leak in BVH process with Hair into T93089: Cycles: CUDA takes ages to render what takes seconds on CPU and OPTIX (it also needs way more RAM).
Sun, May 29, 1:48 AM · Cycles, Render & Cycles, BF Blender

Yesterday

Pratik Borhade (PratikPB2123) merged T98465: Creating black color when two objects intersect in Cycles render into T96475: Overlapping geometry shows black faces on Cycles Blender 3.1 (Ray Tracing Precision).
Sat, May 28, 8:32 PM · BF Blender (3.1), Cycles, Render & Cycles
bar (barakooda) added a comment to T98396: Bad dependencies between viewport render and actual memory consumption in headleass background mode.

After sharing this [[ https://devtalk.blender.org/t/bad-dependencies-between-viewport-render-and-actual-memory-consumption-in-headleass-background-mode/24537 | post ]]linking to our conversation

Sat, May 28, 4:16 PM · EEVEE & Viewport, Core, Render & Cycles, Render Pipeline, BF Blender
Vyacheslav (hitrpr) added a comment to T97870: MNEE work only with 1st refractive shader node and ignore other inside one material.

@Alaska (Alaska) oh, thanks, thats interesting!

Sat, May 28, 9:47 AM · Render & Cycles, BF Blender
Germano Cavalcante (mano-wii) renamed T98449: Regression: Crash on frame change while in Cycles render preview from Crash on frame change while in Cycles render preview to Regression: Crash on frame change while in Cycles render preview.
Sat, May 28, 1:34 AM · Render & Cycles, BF Blender
Germano Cavalcante (mano-wii) updated subscribers of T98449: Regression: Crash on frame change while in Cycles render preview.

rB342e12d6d921: Subdiv: support interpolating orco coordinates in subdivision surfaces is the first bad commit.
Cc. @Brecht Van Lommel (brecht)

Sat, May 28, 1:33 AM · Render & Cycles, BF Blender
Alaska (Alaska) added a comment to T97870: MNEE work only with 1st refractive shader node and ignore other inside one material.

@Vyacheslav (hitrpr) The file provided below uses an alternative method to create the dispersion and produces a "alright" result with MNEE Caustics. This doesn't "fix the bug", but it's something useful for users wanting to use dispersion with MNEE caustics with the current limitation.

Sat, May 28, 1:18 AM · Render & Cycles, BF Blender

Fri, May 27

Germano Cavalcante (mano-wii) changed the status of T98449: Regression: Crash on frame change while in Cycles render preview from Needs Triage to Confirmed.

Can I confirm. It's a recent regression.
Looking for the commit that caused the problem...

Fri, May 27, 10:37 PM · Render & Cycles, BF Blender
Brecht Van Lommel (brecht) closed T98270: Regression: Nishita Sky - Black Sun Disc(Cycles) as Resolved by committing rB967f96ee2e2e: Fix T98270: Cycles shows black with color values > 65K in GPU render.
Fri, May 27, 8:20 PM · Render & Cycles, BF Blender
Troy Sobotka (sobotka) added a comment to T98405: False color look gives incorrect values.

It was only intended as a guide given context constraints of the design of Looks etc., and as such, the False Colour will fall apart. Doubly so with a 3D LUT. There were a number of reasons to make concessions. I would expect it to fall to bits!

Fri, May 27, 8:19 PM · Render & Cycles, BF Blender
tempdevnova (tempdevnova) added a comment to T98405: False color look gives incorrect values.

"The RGB to BW is done in Filmic Log" Is that so in Blender? If that is the case it is a bug.

Fri, May 27, 6:37 PM · Render & Cycles, BF Blender
Zijun Zhou (Eary) added a comment to T98405: False color look gives incorrect values.

It's multiplying with the luminance coefficients in log space, but they only make scene in linear space

Fri, May 27, 6:30 PM · Render & Cycles, BF Blender
Brecht Van Lommel (brecht) edited projects for T98405: False color look gives incorrect values, added: Render & Cycles; removed EEVEE & Viewport.
Fri, May 27, 6:21 PM · Render & Cycles, BF Blender
Brecht Van Lommel (brecht) added a comment to T98366: Active Attributes.

I don't think that's ideal indeed, but I guess there is still an intent to mark with float2 attributes are UV maps, or not?

Yes, that still sounds reasonable to me, but it's not very urgent to me currently, especially when we've solved the "active uv map" issue in a different way.
Such a tag would still be useful when some node does special handling for uv maps for reasons that I don't know right now.

Fri, May 27, 3:08 PM · Pipeline, Assets & I/O, EEVEE & Viewport, Render & Cycles, Nodes & Physics, Geometry Nodes

Thu, May 26

Richard Antalik (ISS) added a comment to T98077: System out of GPU memory with Optix in Blender 3.3 Alpha.

If your GPU usage before rendering is 5.6GB than this would fail as rendering process takes around 4GB.

Thu, May 26, 11:47 PM · Render & Cycles, BF Blender
Ray molenkamp (LazyDodo) added a comment to T96840: Cycles oneAPI device.

alight, not what i was hoping for, given i have no desire to go debug ocloc but progress nonetheless

Thu, May 26, 11:18 PM · Render & Cycles, Cycles
Ray molenkamp (LazyDodo) added a comment to T96840: Cycles oneAPI device.

soo.. some good news, bad news.

Thu, May 26, 7:00 PM · Render & Cycles, Cycles
Omar Emara (OmarSquircleArt) added a comment to T98396: Bad dependencies between viewport render and actual memory consumption in headleass background mode.

I am just saying that this memory is not only allocated for rendering, but also for other things that Blender does, so it is not entirely unreasonable that the visibility of objects in the view layer might have an effect this. I would just wait for a more informed answer on devtalk.

Thu, May 26, 3:07 PM · EEVEE & Viewport, Core, Render & Cycles, Render Pipeline, BF Blender
bar (barakooda) added a comment to T98396: Bad dependencies between viewport render and actual memory consumption in headleass background mode.

you dont think viewport flags should not affect background mode render ?

Thu, May 26, 2:48 PM · EEVEE & Viewport, Core, Render & Cycles, Render Pipeline, BF Blender
Omar Emara (OmarSquircleArt) closed T98396: Bad dependencies between viewport render and actual memory consumption in headleass background mode as Archived.

The memory usage at the start of the status line accounts for all allocations that Blender made, even outside of any rendering operations, so I think it is expected to see an elevated memory usage when more objects are involved in the view layer update.
I am probably not the right person to give you insights, but since this tracker is for bugs and errors, I would suggest you post this in https://devtalk.blender.org/, where you might get better insights. But arching this for now.

Thu, May 26, 2:17 PM · EEVEE & Viewport, Core, Render & Cycles, Render Pipeline, BF Blender
bar (barakooda) added a project to T98396: Bad dependencies between viewport render and actual memory consumption in headleass background mode: EEVEE & Viewport.
Thu, May 26, 1:33 PM · EEVEE & Viewport, Core, Render & Cycles, Render Pipeline, BF Blender
bar (barakooda) updated the task description for T98396: Bad dependencies between viewport render and actual memory consumption in headleass background mode.
Thu, May 26, 1:02 PM · EEVEE & Viewport, Core, Render & Cycles, Render Pipeline, BF Blender
bar (barakooda) updated the task description for T98396: Bad dependencies between viewport render and actual memory consumption in headleass background mode.
Thu, May 26, 1:02 PM · EEVEE & Viewport, Core, Render & Cycles, Render Pipeline, BF Blender
bar (barakooda) updated the task description for T98396: Bad dependencies between viewport render and actual memory consumption in headleass background mode.
Thu, May 26, 1:01 PM · EEVEE & Viewport, Core, Render & Cycles, Render Pipeline, BF Blender
bar (barakooda) added projects to T98396: Bad dependencies between viewport render and actual memory consumption in headleass background mode: Render Pipeline, Render & Cycles, Core.
Thu, May 26, 12:59 PM · EEVEE & Viewport, Core, Render & Cycles, Render Pipeline, BF Blender

Wed, May 25

Facundo Peralta (facu_eze_peralta) added a comment to T94279: Optix_error_internal_error in optixDeviceContextCreate(cuContext, &Options , &Context) while on an RTX card.

I made the update and worked for me, now i have optix enable with my RTX 3060. Now i´ll enjoy faster render times!
Thank you so much sir!

Wed, May 25, 10:47 PM · Render & Cycles, BF Blender
Henry (Rookstun) added a comment to T94279: Optix_error_internal_error in optixDeviceContextCreate(cuContext, &Options , &Context) while on an RTX card.

Yes, I've had faster render times with Optix than with just CUDA.

Wed, May 25, 9:58 PM · Render & Cycles, BF Blender
Jacques Lucke (JacquesLucke) added a comment to T98366: Active Attributes.

If all tools, modifiers and nodes automatically set the active UV map on creation, are there cases where this would happen and users would have to go and fix the active UV map?

Guess that depends on how the ui for creating uv maps look like. We could e.g. have a drop down in the Store Named Attribute node that allows the user to pick "uv map", and then the default uv map would be set on the mesh automatically. The same would be needed in the modifier ui or node group output ui (where it's possible to create named attributes as well). With that, I don't think users would have to manually set the default uv map in almost all cases. A special node for that might still be useful when importing external data within a node, where it's not clear what attribute is a uv map.

Wed, May 25, 8:52 PM · Pipeline, Assets & I/O, EEVEE & Viewport, Render & Cycles, Nodes & Physics, Geometry Nodes
Brecht Van Lommel (brecht) added a comment to T98366: Active Attributes.

I think if no name is set, or the attribute does not exist, then no attribute should be used. These heuristics of where to use which attributes seem to cause us more trouble than it's worth.

Wed, May 25, 8:40 PM · Pipeline, Assets & I/O, EEVEE & Viewport, Render & Cycles, Nodes & Physics, Geometry Nodes
Jean-Michel Argaud (jmargaud) added a comment to T98077: System out of GPU memory with Optix in Blender 3.3 Alpha.

Thanks for your attention, I have downloaded the last alpha today and I still have the issue.
I have uploaded the logs and the problem can be seen in there. My GPU usage before rendering is around 5.6 GB / 8 GB. It varies a bit depending the view in the viewport. Fun fact I have just discovered, depending on that view in the viewport, the "rendered mode" works sometimes. In this case I can change the view and navigate in the viewport without any issue (and even very smooth).

Wed, May 25, 8:29 PM · Render & Cycles, BF Blender
Jacques Lucke (JacquesLucke) added a comment to T98366: Active Attributes.

but this will require adding validation in various places that add/remove attributes, not just manually by the user but also in the modifier stack or geometry nodes.

Wed, May 25, 8:23 PM · Pipeline, Assets & I/O, EEVEE & Viewport, Render & Cycles, Nodes & Physics, Geometry Nodes
Brecht Van Lommel (brecht) added a comment to T98366: Active Attributes.
  • Storing a name seems reasonable to me, but this will require adding validation in various places that add/remove attributes, not just manually by the user but also in the modifier stack or geometry nodes.
  • If no name is set, will just the first attribute with the appropriate type in the list of attributes be used? Or would it be valid for none to be active?
  • Merging meshes with different active attribute names is no new problem I think, is already something users may need to handle.
  • I think it makes sense to have "default" and "edit" attributes. Not sure the term "active" is needed still.
Wed, May 25, 8:02 PM · Pipeline, Assets & I/O, EEVEE & Viewport, Render & Cycles, Nodes & Physics, Geometry Nodes
Brecht Van Lommel (brecht) added a comment to D15010: Node: Photon enegy in electronvolt to RGB color.

Thanks for the contribution.

Wed, May 25, 7:44 PM · Render & Cycles
Brecht Van Lommel (brecht) updated the task description for T91571: Cycles HIP device.
Wed, May 25, 4:53 PM · Cycles, Render & Cycles
Brecht Van Lommel (brecht) renamed T78008: Cycles: Light Group render passes improvements from Cycles: Light Group render passes to Cycles: Light Group render passes improvements.
Wed, May 25, 4:48 PM · Cycles, Render & Cycles
Omar Emara (OmarSquircleArt) changed the status of T98367: Light group passes does not work with shadow catcher object in the scene from Needs Triage to Confirmed.
Wed, May 25, 3:27 PM · Render & Cycles, Cycles, BF Blender
Sayak Biswas (sayakAMD) added a comment to T97591: Cycles HIP error with image textures on Linux and RDNA1.

I was able to reproduce this issue with a 5700XT + Ubuntu 20.04 + ROCm 5.1.2 with bmw and classroom scenes. I'm looking into this.

Wed, May 25, 2:48 PM · Render & Cycles, BF Blender
Jacques Lucke (JacquesLucke) updated the task description for T98366: Active Attributes.
Wed, May 25, 1:47 PM · Pipeline, Assets & I/O, EEVEE & Viewport, Render & Cycles, Nodes & Physics, Geometry Nodes
Jacques Lucke (JacquesLucke) changed the status of T98366: Active Attributes from Needs Triage to Confirmed.
Wed, May 25, 1:46 PM · Pipeline, Assets & I/O, EEVEE & Viewport, Render & Cycles, Nodes & Physics, Geometry Nodes
Omar Emara (OmarSquircleArt) updated the task description for T96954: No error prompted when Cuda fails during GPU bake.
Wed, May 25, 12:38 PM · Render & Cycles, Cycles, BF Blender
Omar Emara (OmarSquircleArt) changed the status of T96954: No error prompted when Cuda fails during GPU bake from Needs Information from User to Needs Information from Developers.

Right, sorry, I misunderstood the report. I guess there should be an appropriate error indeed, but this is not strictly a bug, so I will tag the module to see if something can be done about this.

Wed, May 25, 12:37 PM · Render & Cycles, Cycles, BF Blender
Omar Emara (OmarSquircleArt) closed T86949: Saved file is darker than rendered file/viewport as Archived.

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed.

Wed, May 25, 11:04 AM · BF Blender, Render & Cycles
Xavier Hallade (xavier) added a comment to T96840: Cycles oneAPI device.

I think you double counted igc in dpcpp. On my system it's closer to 300M.
libigc is indeed very large... gzip compression improves the situation a little bit but we can make it more reasonable by stripping debug symbols:
994M libigc.so.1.0.1
327M libigc.so.1.0.1.gz
85M libigc.so.1.0.1_stripped-debug-symbols

Wed, May 25, 9:28 AM · Render & Cycles, Cycles
Facundo Peralta (facu_eze_peralta) added a comment to T94279: Optix_error_internal_error in optixDeviceContextCreate(cuContext, &Options , &Context) while on an RTX card.

Oh nice! I´ll try with that version of driver. With optix enable the renders go faster, rigth?

Wed, May 25, 5:53 AM · Render & Cycles, BF Blender
Henry (Rookstun) added a comment to T94279: Optix_error_internal_error in optixDeviceContextCreate(cuContext, &Options , &Context) while on an RTX card.

I've had problems with newer drivers. I rolled back to Studio Driver version 472.84.

Wed, May 25, 5:32 AM · Render & Cycles, BF Blender
Facundo Peralta (facu_eze_peralta) added a comment to T94279: Optix_error_internal_error in optixDeviceContextCreate(cuContext, &Options , &Context) while on an RTX card.

Hi, i updated my drivers to Studio drivers and i still having the error. How can i fix it?
i have windows 10 and a RTX 3060
32GB of RAM
and Ryzen 3700x.

Wed, May 25, 4:26 AM · Render & Cycles, BF Blender
Aaron Carlisle (Blendify) added a reviewer for D15010: Node: Photon enegy in electronvolt to RGB color: Brecht Van Lommel (brecht).
Wed, May 25, 3:33 AM · Render & Cycles
Richard Antalik (ISS) changed the status of T98077: System out of GPU memory with Optix in Blender 3.3 Alpha from Needs Triage to Needs Information from User.

I can't reproduce here, .blend file did render without issues.
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 511.65

Wed, May 25, 2:32 AM · Render & Cycles, BF Blender

Tue, May 24

Ray molenkamp (LazyDodo) added a comment to T96840: Cycles oneAPI device.

all the buildscripts should be complete, they should build with no issues on both windows and centos (centos7 disclaimer, the stock flex is outdated, needs to be replaced with a build from source 2.6.4 or you'll have build errors), the blender windows build with dg2 enabled I made @Xavier Hallade (xavier) was able to confirm as working, on linux all the puzzle pieces are in place but due to my centos container running out of ram i could not complete a blender build there.

Tue, May 24, 8:36 PM · Render & Cycles, Cycles
Omar Emara (OmarSquircleArt) changed the status of T98175: Tangent space normal mapped normals change inappropriately with deformation from Needs Information from User to Confirmed.

Okay, you are right, that seems significant indeed.

Tue, May 24, 9:57 AM · Render & Cycles, BF Blender