LuxCoreRender Forums

Hello everyone. I am a new LuxCoreRender user. Is it possible to render scenes using the CPU on LuxCore Standalone like in Blender? I'm running it right now on a laptop with limited VRAM so I am not interested in using luxcoreui which seems to be GPU only, I also have a small render farm with 15 quad-core machines with 4GB RAM each. I am running Slackware Linux 64-bit.
Sincerely,
Mats

matsbtegner wrote: Sat Feb 13, 2021 2:58 pm Hello everyone. I am a new LuxCoreRender user. Is it possible to render scenes using the CPU on LuxCore Standalone like in Blender? I'm running it right now on a laptop with limited VRAM so I am not interested in using luxcoreui which seems to be GPU only, I also have a small render farm with 15 quad- core machines with 4GB RAM each. I am running Slackware Linux 64-bit.

LuxCoreUI can work with CPU too, you have just to set inside the render.cfg or from command line the usage of PATHCPU (i.e. the CPU-only render engine) instead of PATHOCL (i.e. CPU+GPU render engine).

The other option is to use pyluxcoretools "console" to do command line only rendering.

Okay, thanks for your reply. I will test using the latest release from GitHub.
Cornell box scene fails to render:
bash-5.1$ ./luxcoreui
LuxCoreUI v2.5beta1 (LuxCore demo: http://www.luxcorerender.org)
[LuxCore][6.739] Configuration:
[LuxCore][6.739] film.width = "800"
[LuxCore][6.739] film.height = "800"
[LuxCore][6.739] scene.file = "scenes/cornell/cornell.scn"
[LuxCore][6.739] path.photongi.indirect.enabled = "0"
[LuxCore][6.739] path.photongi.caustic.enabled = "0"
[LuxCore][6.739] path.pathdepth.total = "5"
[LuxCore][6.739] film.imagepipelines.0.0.type = "TONEMAP_LINEAR"
[LuxCore][6.740] film.imagepipelines.0.0.scale = "1"
[LuxCore][6.740] film.imagepipelines.0.1.type = "GAMMA_CORRECTION"
[LuxCore][6.740] film.imagepipelines.0.1.value = "2.2"
[LuxCore][6.740] film.outputs.0.type = "RGB_IMAGEPIPELINE"
[LuxCore][6.740] film.outputs.0.index = "0"
[LuxCore][6.740] film.outputs.0.filename = "normal.png"
[LuxCore][6.740] film.outputs.1.type = "RGB_IMAGEPIPELINE"
[LuxCore][6.740] film.outputs.1.index = "1"
[LuxCore][6.740] film.outputs.1.filename = "denoised.png"
[LuxCore][6.740] film.outputs.2.type = "ALBEDO"
[LuxCore][6.740] film.outputs.2.filename = "cornell_ALBEDO.png"
[LuxCore][6.740] film.outputs.3.type = "AVG_SHADING_NORMAL"
[LuxCore][6.740] film.outputs.3.filename = "cornell_AVG_SHADING_NORMAL.exr"
[LuxCore][6.740] File Name Resolver Configuration:
[LuxCore][6.740] .
[LuxCore][6.740] /home/mats/LuxCore/scenes/cornell
[SDL][6.740] Reading scene: ./cornell.scn
[SDL][6.740] Define ImageMap: NamedObject
[SDL][6.740] Material definition: Khaki
[SDL][6.740] Material definition: HalveRed
[SDL][6.740] Material definition: DarkGreen
[SDL][6.741] Material definition: Light
[SDL][6.741] Camera type: perspective
[SDL][6.741] Camera position: Point[-2.78, -8, 2.73]
[SDL][6.741] Camera target: Point[-2.78, 2, 2.73]
[SDL][6.741] Camera clipping plane disabled
RPly: Error reading 'x' of 'vertex' number 0
RenderConfig loading error:
Unable to parse PLY file './Khaki.ply'
Done.

matsbtegner wrote: Sat Feb 13, 2021 5:40 pm Okay, thanks for your reply. I will test using the latest release from GitHub.
Cornell box scene fails to render:

You have probably a misconfigured Git checkout replacing Unix line termination with MS-DOS line termination (or viceversa) in .ply files. If you download the .zip, available from GithHub, with all the sources, it should work fine.

Nope. I downloaded the LuxCore-master.zip and the Cornell Box scene still fails to load. The Example scene OrangeJuice renders fine after modifying the render.cfg.

matsbtegner wrote: Sat Feb 13, 2021 10:11 pm Nope. I downloaded the LuxCore-master.zip and the Cornell Box scene still fails to load. The Example scene OrangeJuice renders fine after modifying the render.cfg.

Can you post your "Khaki.ply" file ?

These ply-files fails:
bash-5.1$ ./luxcoreui
LuxCoreUI v2.5beta1 (LuxCore demo: http://www.luxcorerender.org)
[LuxCore][38.528] Configuration:
[LuxCore][38.533] film.width = "640"
[LuxCore][38.533] film.height = "480"
[LuxCore][38.533] batch.halttime = "0"
[LuxCore][38.533] scene.file = "scenes/classroom/classroom-hdr.scn"
[LuxCore][38.533] sampler.type = "METROPOLIS"
[LuxCore][38.534] opencl.cpu.use = "1"
[LuxCore][38.534] opencl.gpu.use = "1"
[LuxCore][38.534] opencl.gpu.workgroup.size = "64"
[LuxCore][38.534] screen.refresh.interval = "100"
[LuxCore][38.534] path.maxdepth = "8"
[LuxCore][38.534] path.russianroulette.depth = "4"
[LuxCore][38.534] File Name Resolver Configuration:
[LuxCore][38.534] .
[LuxCore][38.534] /home/mats/Programming/LuxCore/scenes/classroom
[SDL][38.534] Reading scene: ./classroom-hdr.scn
[SDL][38.553] Define ImageMap: NamedObject
[SDL][38.572] Material definition: chrome
[SDL][38.596] Material definition: mirror
[SDL][38.596] Material definition: lampshades_mat1
[SDL][38.596] Material definition: lampshades_mat2
[SDL][38.596] Material definition: lampshades
[SDL][38.596] Material definition: lights_mat1
[SDL][38.597] Material definition: lights_mat2
[SDL][38.597] Material definition: lights
[SDL][38.597] Material definition: desktop
[SDL][38.597] Material definition: floor
[SDL][38.597] Material definition: chair
[SDL][38.597] Material definition: chalkboard
[SDL][38.597] Material definition: rubber
[SDL][38.597] Material definition: walls
[SDL][38.597] Material definition: white_paint
[SDL][38.597] Material definition: white_plastic
[SDL][38.597] WARNING: deprecated property scene.camera.lookat
[SDL][38.597] Camera type: perspective
[SDL][38.597] Camera position: Point[-6.07891, 0.763888, -0.244332]
[SDL][38.597] Camera target: Point[3.86243, -0.287569, -0.49751]
[SDL][38.597] Camera clipping plane disabled
RPly: Error reading 'x' of 'vertex' number 0
RenderConfig loading error:
Unable to parse PLY file './chair.ply'

You must post the file as attachment so I can compare the md5sum with the original file. Anyway, it is probably your "unzip" to try to replace Unix line termination with MS-DOS line termination.

I have attached the ply-files now. The classroom and the Cornell box scenes fail to load.

Try to set your locale to US, your system seems to expect a "," instead of "." as decimal separator (and ignore luxcoreui request for a "C" locale). Have you compiled luxcoreui on your own or are you using a daily build ?