Warning: image doesn't have Albedo.{R,G,B} channels. Denoising quality may suffer. Warning: output/bistro_vespa.exr: image doesn't have Ns.X, Ns.Y, Ns.Z channels. Denoising quality may suffer.

[disini]

Hello,

I rendered a picture with the command :

./pbrt --gpu --spp 100 --display-server localhost:14158 /media/liusheng/Projects/project/game_engines/pbrt/github/mmp/pbrt-v4-scenes/2023/pbrt-v4-scenes/bistro/bistro_vespa.pbrt

and it's log :

pbrt version 4 (built Jul 27 2023 at 10:58:03)
Copyright (c)1998-2021 Matt Pharr, Wenzel Jakob, and Greg Humphreys.
The source code to pbrt (but *not* the book contents) is covered by the Apache 2.0 License.
See the file LICENSE.txt for the conditions of the license.
Warning: Sobol samplers with non power-of-two sample counts (100) are suboptimal.
Rendering: [++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++]  (92.7s)   

then I tried to use the imgtool to denoise the exr file the renderer output, with :

imgtool denoise-optix output/bistro_vespa.exr --outfile output/bistro_vespa_denoised.exr

it finished the denoising work and gave a cleaner picture, but with 2 warnings.

Warning: output/bistro_vespa.exr: image doesn't have Albedo.{R,G,B} channels. Denoising quality may suffer.
Warning: output/bistro_vespa.exr: image doesn't have Ns.X, Ns.Y, Ns.Z channels. Denoising quality may suffer.

so I want to know is there any parameters I forgot to input when render the scene? or is it the correct rendered result for this program? I mean does the pbrt program not add those information(Albedo.{R,G,B} , Ns.X, Ns.Y, Ns.Z channels.) to the out put files ?

Thank you sir !

[pbrt4bounty]

You need to select 'gbuffer' mode into Film parameters https://pbrt.org/fileformat-v4 I don't know if are a good idea to use this issue report for questions that you can solve reading the guide Only my 2 cts :)

[disini]

You need to select 'gbuffer' mode into Film parameters https://pbrt.org/fileformat-v4 I don't know if are a good idea to use this issue report for questions that you can solve reading the guide Only my 2 cts :)

OK I will read the guide later, Thanks so much for your help!