Weizhen Huang weizhen
  • Joined on 2022-10-03
Weizhen Huang pushed to fix-light-tree-in-large-volume-4.2 at weizhen/blender 2024-06-21 10:01:59 +02:00
bbee9f2d7d Fix: Cycles Light Tree gives low weight to distant lights in large volume
91d5a639dc Extensions: prevent install/upgrade while sync is in progress
72af4d0977 Cleanup: use a set to store enabled add-on module names
78a5ade1be Extensions: remove disabled UI logic
c312f20627 Extensions: add an extension menu for each extension
Compare 10 commits »
Weizhen Huang commented on issue blender/blender#123451 2024-06-20 13:03:32 +02:00
The Huang model of the Principled Hair BSDF is too dark

Your model has an unrealistically high IOR of 2.0, the default is 1.55. I adjusted some parameters to make it closer to your desired look. Notably, I changed the Transmission, which is a parameter…

Weizhen Huang closed issue blender/blender#123448 2024-06-20 09:52:27 +02:00
Possibly incorrect rendering result when using zero-spread area light on a standard Lambertian object in Blender 3.6.12
Weizhen Huang commented on issue blender/blender#123448 2024-06-20 09:40:51 +02:00
Possibly incorrect rendering result when using zero-spread area light on a standard Lambertian object in Blender 3.6.12

This difference in behaviour is due to 2 reasons:

  1. The ratio to convert from energy to radiance was wrong in 3.6, there was a factor of pi/4 missing and is corrected in 4.0 (482211b7e0). The…
Weizhen Huang commented on issue blender/blender#123451 2024-06-20 09:18:18 +02:00
The Huang model of the Principled Hair BSDF is too dark

There is some known issue with the energy conservation, basically the Huang model is overestimating the total internal reflection and thus darker than it should be.

I can put aside some time…

Weizhen Huang commented on issue blender/blender#122956 2024-06-17 12:25:03 +02:00
Cycles: Internal Error when rendering large scenes with MacOS Metal

@lloydmarquart I went to Activity Monitor -> Window -> GPU History and the memory usage peaked.

Weizhen Huang commented on issue blender/blender#122956 2024-06-17 11:33:23 +02:00
Cycles: Internal Error when rendering large scenes with MacOS Metal

@lloydmarquart motion blur requires additional memory to store positions and normals, so that might be the same issue. Is it possible that you share the blend file that you are using?

Weizhen Huang commented on pull request blender/blender#123046 2024-06-17 11:13:40 +02:00
Cycles: add Central Cylindrical Panoramic camera model

You can use PROP_DISTANCE instead of PROP_NONE, and remove the "(in meters)"

Weizhen Huang commented on pull request blender/blender#123046 2024-06-17 11:13:39 +02:00
Cycles: add Central Cylindrical Panoramic camera model

You don't need to say (in degree) because if the property is set to PROP_ANGLE, a degree symbol ° is already shown in the UI.

Weizhen Huang commented on pull request blender/blender#123046 2024-06-17 10:54:30 +02:00
Cycles: add Central Cylindrical Panoramic camera model

I don't the longitude needs hard limits, see https://wiki.panotools.org/index.php?title=Cylindrical_Projection

It can however be used to display more than 360 degrees horizontally: scanning…

Weizhen Huang commented on issue blender/blender#123201 2024-06-14 12:35:56 +02:00
Regression: Cycles: OSL misses Bump (from Material > Settings > Surface > Displacement > Displacement and Bump)

I believe it's a problem with library update. I checked out 0b0e0601a14d07ab9efe501f02d1778c825c64a4 and did svn up -r63595 in lib/darwin_arm64 then it worked. The results are a bit off but…

Weizhen Huang opened issue blender/blender#123201 2024-06-13 18:53:15 +02:00
Cycles: OSL displacement broken
Weizhen Huang pushed to main at blender/blender 2024-06-13 16:03:53 +02:00
5bb7dc82ae Merge branch 'blender-v4.2-release'
e639c3d6e2 Fix #74816: crash in Cycles light distribution due to integer overflow
Compare 2 commits »
Weizhen Huang deleted branch fix-74816 from weizhen/blender 2024-06-13 15:57:31 +02:00
Weizhen Huang closed issue blender/blender#74816 2024-06-13 15:57:28 +02:00
Crash on render on some of the frames
Weizhen Huang pushed to blender-v4.2-release at blender/blender 2024-06-13 15:57:24 +02:00
e639c3d6e2 Fix #74816: crash in Cycles light distribution due to integer overflow
Weizhen Huang merged pull request blender/blender#123177 2024-06-13 15:57:23 +02:00
Fix #74816: crash in Cycles light distribution due to integer overflow
Weizhen Huang commented on pull request blender/blender#123177 2024-06-13 15:46:27 +02:00
Fix #74816: crash in Cycles light distribution due to integer overflow

About recommendation in the message, because light tree is enabled by default now, if the user still chooses to use light distribution that must be for a reason. Also there might be cases where…

Weizhen Huang pushed to fix-74816 at weizhen/blender 2024-06-13 15:45:39 +02:00
960845a5e3 Handle overflow as error instead
Weizhen Huang commented on pull request blender/blender#123046 2024-06-13 12:51:27 +02:00
Cycles: add Central Cylindrical Panoramic camera model

RNA_def_property_ui_range() is where you put the soft limit.