knightcrawler25 / optix-pathtracer Goto Github PK

How can I give input to the program? I have downloaded a blend file (scene?) and here is the command I use

$ ./optixPathTracer -s ../../samples/grey.white.room.03.bs.blend
Unknown option '-s'

Usage: ./optixPathTracer [options]
App Options:
  -h | --help                  Print this usage message and exit.
  -f | --file <output_file>    Save image to file and exit.
  -n | --nopbo                 Disable GL interop for display buffer.
  -s | --scene                 Provide a scene file for rendering.
App Keystrokes:
  q  Quit
  s  Save image to 'optixPathTracer.png'
  f  Re-center camera

I'm very glad to see this awesome project. But when I try to write some different shaders, I fail to set breakpoint in neither the .cu files nor the compiled ptx files with cuda-gdb. Could you please give me some guidance about the debug?

I have tried to build the project with latest optix 7.3 and cuda 11.3 with visual studio 2019. However it did not work. Is there any upgradation plan for this project?

Couple of question:
1- Is it fine to load a render over ssh with X11 forwarding?
2- Should OpenGL driver be installed with the Nvidia driver?

Currently, I am sshing to a node with "ssh -Y". The segmentation fault I receive is at:

$ ./optixPathTracer -scene ../../src/data/bedroom.scene
material Boxes
material PlasticCable
material LampEmitter
material Blankets
material Bedsheets
material Window
material PictureBacking
material Picture
material Rocks1
material Rocks2
material Rocks3
material DecoPlant
material Painting1
material Painting2
material Painting3
material Carpet
material Matress
material WoodFloor
material Walls
material Walls2
material WoodFurniture
material Mirror
material Aluminium
material BookCover
material BookPages
material LampMetal
material Vase
material Glass
material PictureFrame
material CurtainRod
material Curtains
material StainlessSmooth
        material Curtains
        material Curtains
Segmentation fault (core dumped)

I built the Debug binary and with gdb, I see

material StainlessSmooth
        material Curtains
        material Curtains

Program received signal SIGSEGV, Segmentation fault.
0x000000000026737c in ?? ()
(gdb) bt
#0  0x000000000026737c in ?? ()
#1  0x0000555555588b3a in main (argc=3, argv=0x7fffffffe7a8)
    at /mnt/local/mnaderan/op/Optix-PathTracer/src/optixPathTracer/optixPathTracer.cpp:669

That line is here.

Is seems that IL (or DevIL) is needed here. I am not sure what may cause this error?
DevIL, OpenGL, X11 forwarding, ...

Any feedback?

Hi,

can you briefly explain how to load the scenes after extracting data.rar into src/data?

Thanks!

Hi, it is a very nice project!!
I want to add some animation to the objects, I tried to add transform node to the GeometryGroup, similar as Optix sample "optixDynamicGeometry", the object did move, but it seems the shading and reflection are not correct, do you know why? Thanks!

At the end of build I see some messages related to DevIl

[100%] Linking CXX executable ../bin/optixPathTracer
/usr/bin/x86_64-linux-gnu-ld: /home/mahmood/Optix-PathTracer/src/support/DevIL/lib/x64/Release/DevIL.lib(DevIL.dll): Recognised but unhandled machine type (0x8664) in Import Library Format archive

I didn't find any variable for DevIL. I have that but don't know how to tell Optix-PathTracer.

Hi,

I tried the SSS material provided by the Disney BRDF in this path tracer, but I couldn't achieve the nice translucency effect of subsurface scattering.

Below is a description of the SSS material

material sss
{
color 0.79 0.8 0.04
roughness 0.17
specular 0.5
subsurface 1.0
clearcoat 1.0
clearcoatGloss 0.93
}

For comparison, the same scene in Blender:

Any tips on how to achieve this effect?

I run sample I was caught exception as follows.
OptiX Error: 'Invalid context (Details: Function "_rtProgramGetId" caught exception: Validation error: _Z6SampleR17MaterialParameterR5StateR19PerRayData_radiance function with semantic type BINDLESS_CALLABLE_PROGRAM accesses the rtCurrentRay semantic variable.)'

What's up??

I Develop under Optix 6.0,0.

The result of Optix-PathTracer is amazing!

But it seems that the window of the scene bedroom is serrated, is there something error about anti-aliasing?

Hi!
Thanks for your amazing job!
Could you please tell me how you convert the dining-room.blend file to many separate obj files? I use blender to read dining-room.blend and then export to obj, but I could only get one big obj file.
Thanks for your help!