Fernando Alcala Fernando-Alcala
  • Joined on 2020-07-08
Fernando Alcala commented on issue blender/blender#120550 2024-04-13 00:01:52 +02:00
Trackpad mouse input jumps when doing certain mouse operations

Can not reproduce with an external touchpad on two different PCs in Windows 10 or Linux.

Fernando Alcala commented on issue blender/blender#120380 2024-04-07 21:45:09 +02:00
Regression: The same glass shader works in different ways

The Principled BSDF went through a lot of changes. You can see this by changing the walls and floor to diffuse, the lighting in the room is the same on 3.6.5 ![4m8s 365.png](/attachments/cf537454…

Fernando Alcala commented on issue blender/blender#113733 2024-02-24 05:46:47 +01:00
Cycles: increasing max bounces along with insufficient indirect clamping breaks white hair in the Huang BSDF

Still happens with the new updates. 2,000,000 samples. nearfield 2000000sample 60000density 3d curves.png ![2000000.png](/attachments/6a7383b…

Fernando Alcala commented on issue blender/blender#117370 2024-01-21 01:12:14 +01:00
Refraction BSDF broken with completely black

Not an issue: (total) internal reflection.

Fernando Alcala commented on issue blender/blender#113733 2024-01-03 22:25:09 +01:00
Cycles: increasing max bounces along with insufficient indirect clamping breaks white hair in the Huang BSDF

Made a simpler scene that renders faster. It also highlights the other fundamental issue: hair density. In this scene, setting hair density to 5000 does not produce the issue. ![20000sample…

Fernando Alcala commented on issue blender/blender#113733 2024-01-01 21:51:35 +01:00
Cycles: increasing max bounces along with insufficient indirect clamping breaks white hair in the Huang BSDF

I am able to reproduce in Windows 10 on two different machines and in Linux, both with GPU and CPU.

Machine 1, 1080ti, i7 4790k, Windows 10: GPU Optix ![windows 1080ti optix.png](/attachments/…

Fernando Alcala commented on issue blender/blender#115544 2023-12-09 06:57:03 +01:00
Regression: Wacom hangs on blender startup/close

Can not replicate in Windows 10 with an Intuos Pro Large in 3.6.5, 4.0.1, or 4.0.2. No spikes in activity. Pen and touch input still function well through the opening or closing of Blender.

Fernando Alcala commented on pull request blender/blender#115241 2023-11-24 07:18:17 +01:00
Fix #114780: Cycles: Principled Chiang Hair importance sampling correction

How did you make the difference image? Using the images you provide I get this differnece.jpg

Fernando Alcala commented on pull request blender/blender#115241 2023-11-22 06:19:12 +01:00
Fix #114780: Cycles: Principled Chiang Hair importance sampling correction

Reduced color noise: reduced color noise.png

Enhanced specularity (cattle is not the best example to show cuticle tilt, sheep would most…

Fernando Alcala commented on pull request blender/blender#115241 2023-11-21 22:10:35 +01:00
Fix #114780: Cycles: Principled Chiang Hair importance sampling correction

There is a difference. The fix seems to reduce color noise, improve noise for certain sections, as well as adding a bit of specularity to some areas (especially the bottom part of the image).…

Fernando Alcala commented on pull request blender/blender#115241 2023-11-21 20:51:26 +01:00
Fix #114780: Cycles: Principled Chiang Hair importance sampling correction

The Old image has the compositor enabled while the Corrected one does not.

Fernando Alcala commented on issue blender/blender#115042 2023-11-18 21:00:26 +01:00
2 Glass materials with same volume absorption combine error.

I figured out this issue on the old website, but I couldn't find an easy way to find it. The base issue is that things get broken when a mesh has multiple volume shaders, even when the two volume…

Fernando Alcala commented on issue blender/blender#115035 2023-11-17 21:35:45 +01:00
Light object "Spot" behaves like "Point"

The spot light was changed to just be a point light with an angle #109329

Fernando Alcala commented on issue blender/blender#114634 2023-11-11 03:45:48 +01:00
Light tree can't sample correctly spotlight with volume (Blender 3.6 / 4.0 / 4.1 All versions of blender)

Martijn, I see no difference with 4.0.0 candidate between linux and windows (two different PCs, either CPU or GPU), maybe a 3.6 issue?

Fernando Alcala opened issue blender/blender#113733 2023-10-15 03:16:55 +02:00
Cycles: increasing max bounces along with insufficient indirect clamping breaks white hair in the Huang BSDF
Fernando Alcala opened issue blender/blender#113728 2023-10-14 20:31:10 +02:00
Cycles: small light sources with multiple importance sampling enabled breaks the Huang BSDF