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LuxCore source repository

License: Apache License 2.0

CMake 1.10% C 8.98% C++ 87.21% Python 1.83% Shell 0.27% Lex 0.05% Yacc 0.56% Batchfile 0.01%

3d-graphics raytracer ray-tracing opencl gpu-computing luxrender luxcorerender visualization raytracing ray-tracer

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luxcore's Issues

Use Embree multi-keys motion blur

Add the support for new Embree multi-keys motion blur.

Python crashes when calling sys.exit()

Python crashes when calling sys.exit() if pyluxcore.Init() was called with an call back. This is due to pyluxcore keeping a reference to the callback in a static boost::python::object. Everything works fine if python code exit normally without calling sys.exit().

I haven't yet found a work around to this problem.

Want to back this issue? Post a bounty on it! We accept bounties via Bountysource.

Periodic save of resume rendering file

Add the support for periodic save of a resume rendering file.

Add also "safe" save (i.e. save on a temporary name, rename the old file, rename the temporary file).

Add feature: imagemap wrapping

Add the imagemap wrapping modes that were supported in Classic Lux: http://www.luxrender.net/wiki/Scene_file_format_1.0#imagemap

How to wrap the texture using "repeat", "black" (black beyond texture) or "clamp" (clamps to border color)

Check tile repository initialization

https://forums.luxcorerender.org/viewtopic.php?f=4&t=12

FILESAVER saves the base mesh of instances and motion blurred meshes multiple times

It works but it is a useless work.

Add the support for saving the complete scene definition in a binary format.

syntax error in fresnel texture

Since the merge with the new spectral rendering code I get a syntax error message with fresnelpreset and fresnelsopra textures .

Example material (tex 1 works, tex2 and tex 3 Syntax error):
scene.textures.tex3.type = fresnelsopra
scene.textures.tex3.file = scenes/luxball/Au.nk
scene.textures.tex2.type = fresnelpreset
scene.textures.tex2.name = copper
scene.textures.tex1.type = fresnelcolor
scene.textures.tex1.kr = 0.7 0.0 0.0
scene.materials.shell.type = metal2
scene.materials.shell.fresnel = tex3
scene.materials.shell.uroughness = 0.05
scene.materials.shell.vroughness = 0.05

Add an image plugin to write over the image

Add an image plugin to write over the rendered image custom text and statistics.

Want to back this issue? Post a bounty on it! We accept bounties via Bountysource.

Displacement and subdivision through Embree

Embree supports both displacement and subdivision: https://embree.github.io/api.html
Would it be a good idea to make that usable in LuxCore?
Probably with dedicated shapes as wrappers.

During my online research I also stumbled about this issue: RenderKit/embree#163
Might be something to look out for if LuxCore uses dynamic scenes.

Material is black with BIDIR, works with PATH

scene.zip

BIDIR:

PATH:

.scn file:

scene.camera.cliphither = 0.00100000005
scene.camera.clipyon = 1.00000002e+30
scene.camera.shutteropen = 0
scene.camera.shutterclose = 1
scene.camera.lookat.orig = -2.65271783 -3.84124851 2.26758385
scene.camera.lookat.target = -2.14166713 -3.0918684 1.84656537
scene.camera.up = 0.237212077 0.347831845 0.90705204
scene.camera.screenwindow = -1 1 -0.5625 0.5625
scene.camera.lensradius = 0
scene.camera.focaldistance = 10
scene.camera.autofocus.enable = 0
scene.camera.type = "perspective"
scene.camera.oculusrift.barrelpostpro.enable = 0
scene.camera.fieldofview = 49.1343422
scene.lights.SunLAMPSUN.gain = 1 1 1
scene.lights.SunLAMPSUN.transformation = 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1
scene.lights.SunLAMPSUN.samples = -1
scene.lights.SunLAMPSUN.id = 0
scene.lights.SunLAMPSUN.visibility.indirect.diffuse.enable = 1
scene.lights.SunLAMPSUN.visibility.indirect.glossy.enable = 1
scene.lights.SunLAMPSUN.visibility.indirect.specular.enable = 1
scene.lights.SunLAMPSUN.type = "sun"
scene.lights.SunLAMPSUN.dir = -0.79181087 0.156163216 0.59046483
scene.lights.SunLAMPSUN.turbidity = 2.20000005
scene.lights.SunLAMPSUN.relsize = 1
scene.lights.__WORLD_BACKGROUND_LIGHT__.gain = 1 1 1
scene.lights.__WORLD_BACKGROUND_LIGHT__.transformation = 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1
scene.lights.__WORLD_BACKGROUND_LIGHT__.samples = -1
scene.lights.__WORLD_BACKGROUND_LIGHT__.id = 0
scene.lights.__WORLD_BACKGROUND_LIGHT__.visibility.indirect.diffuse.enable = 1
scene.lights.__WORLD_BACKGROUND_LIGHT__.visibility.indirect.glossy.enable = 1
scene.lights.__WORLD_BACKGROUND_LIGHT__.visibility.indirect.specular.enable = 1
scene.lights.__WORLD_BACKGROUND_LIGHT__.type = "sky2"
scene.lights.__WORLD_BACKGROUND_LIGHT__.dir = -0.79181087 0.156163216 0.59046483
scene.lights.__WORLD_BACKGROUND_LIGHT__.turbidity = 2.20000005
scene.lights.__WORLD_BACKGROUND_LIGHT__.groundalbedo = 0.5 0.5 0.5
scene.lights.__WORLD_BACKGROUND_LIGHT__.ground.enable = 0
scene.lights.__WORLD_BACKGROUND_LIGHT__.ground.color = 0.5 0.5 0.5
scene.lights.__WORLD_BACKGROUND_LIGHT__.ground.autoscale = 1
scene.textures.Imagemap_ground_tex.type = "imagemap"
scene.textures.Imagemap_ground_tex.file = "imagemap-00000.png"
scene.textures.Imagemap_ground_tex.gain = 1
scene.textures.Imagemap_ground_tex.gamma = 1
scene.textures.Imagemap_ground_tex.storage = "byte"
scene.textures.Imagemap_ground_tex.mapping.type = "uvmapping2d"
scene.textures.Imagemap_ground_tex.mapping.uvscale = 1 -1
scene.textures.Imagemap_ground_tex.mapping.uvdelta = 0 1
scene.textures.Implicit-ConstFloatTexture3-881ae599-dec1-4f30-989a-c692d3b184a4.type = "constfloat3"
scene.textures.Implicit-ConstFloatTexture3-881ae599-dec1-4f30-989a-c692d3b184a4.value = 0.649069846 0.0093759466 0.0093759466
scene.textures.Implicit-ConstFloatTexture3-bfe1f3bb-43ec-4f4a-8819-a80fd83365cd.type = "constfloat3"
scene.textures.Implicit-ConstFloatTexture3-bfe1f3bb-43ec-4f4a-8819-a80fd83365cd.value = 0.00471933186 0.172631368 0.0235267561
scene.textures.Pointer_Material_pointer.type = "checkerboard3d"
scene.textures.Pointer_Material_pointer.texture1 = "Implicit-ConstFloatTexture3-881ae599-dec1-4f30-989a-c692d3b184a4"
scene.textures.Pointer_Material_pointer.texture2 = "Implicit-ConstFloatTexture3-bfe1f3bb-43ec-4f4a-8819-a80fd83365cd"
scene.textures.Pointer_Material_pointer.mapping.type = "globalmapping3d"
scene.textures.Pointer_Material_pointer.mapping.transformation = 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1
scene.textures.Implicit-ConstFloatTexture-ef69bdff-1bc3-4be7-bb2e-bca6b79eebd1.type = "constfloat1"
scene.textures.Implicit-ConstFloatTexture-ef69bdff-1bc3-4be7-bb2e-bca6b79eebd1.value = 0
scene.textures.Implicit-ConstFloatTexture3-2e1ede90-1938-43ab-b806-1e383e697382.type = "constfloat3"
scene.textures.Implicit-ConstFloatTexture3-2e1ede90-1938-43ab-b806-1e383e697382.value = 0 0 0
scene.textures.Implicit-ConstFloatTexture-2cd14307-e916-48fa-aa61-d1e35aba96d3.type = "constfloat1"
scene.textures.Implicit-ConstFloatTexture-2cd14307-e916-48fa-aa61-d1e35aba96d3.value = 0
scene.textures.Implicit-ConstFloatTexture3-923c287d-2942-43ea-941c-0c3b1d55e840.type = "constfloat3"
scene.textures.Implicit-ConstFloatTexture3-923c287d-2942-43ea-941c-0c3b1d55e840.value = 1 1 1
scene.textures.Implicit-ConstFloatTexture-474db1a5-3fc1-4334-b5e6-3ee09ed9fa07.type = "constfloat1"
scene.textures.Implicit-ConstFloatTexture-474db1a5-3fc1-4334-b5e6-3ee09ed9fa07.value = 0.504559278
scene.materials.groundSURFACE.type = "roughmatte"
scene.materials.groundSURFACE.kd = "Imagemap_ground_tex"
scene.materials.groundSURFACE.sigma = "Implicit-ConstFloatTexture-ef69bdff-1bc3-4be7-bb2e-bca6b79eebd1"
scene.materials.groundSURFACE.id = 3364224
scene.materials.groundSURFACE.emission.gain = 1 1 1
scene.materials.groundSURFACE.emission.power = 0
scene.materials.groundSURFACE.emission.efficency = 0
scene.materials.groundSURFACE.emission.theta = 90
scene.materials.groundSURFACE.emission.samples = -1
scene.materials.groundSURFACE.emission.id = 0
scene.materials.groundSURFACE.visibility.indirect.diffuse.enable = 1
scene.materials.groundSURFACE.visibility.indirect.glossy.enable = 1
scene.materials.groundSURFACE.visibility.indirect.specular.enable = 1
scene.materials.groundSURFACE.shadowcatcher.enable = 0
scene.materials.groundSURFACE.shadowcatcher.onlyinfinitelights = 0
scene.materials.__BLACK__.type = "matte"
scene.materials.__BLACK__.kd = "Implicit-ConstFloatTexture3-2e1ede90-1938-43ab-b806-1e383e697382"
scene.materials.__BLACK__.id = 6728256
scene.materials.__BLACK__.emission.gain = 1 1 1
scene.materials.__BLACK__.emission.power = 0
scene.materials.__BLACK__.emission.efficency = 0
scene.materials.__BLACK__.emission.theta = 90
scene.materials.__BLACK__.emission.samples = -1
scene.materials.__BLACK__.emission.id = 0
scene.materials.__BLACK__.visibility.indirect.diffuse.enable = 1
scene.materials.__BLACK__.visibility.indirect.glossy.enable = 1
scene.materials.__BLACK__.visibility.indirect.specular.enable = 1
scene.materials.__BLACK__.shadowcatcher.enable = 0
scene.materials.__BLACK__.shadowcatcher.onlyinfinitelights = 0
scene.materials.Matte__Material_Material_mat.type = "roughmatte"
scene.materials.Matte__Material_Material_mat.kd = "Pointer_Material_pointer"
scene.materials.Matte__Material_Material_mat.sigma = "Implicit-ConstFloatTexture-2cd14307-e916-48fa-aa61-d1e35aba96d3"
scene.materials.Matte__Material_Material_mat.id = 10034367
scene.materials.Matte__Material_Material_mat.emission.gain = 1 1 1
scene.materials.Matte__Material_Material_mat.emission.power = 0
scene.materials.Matte__Material_Material_mat.emission.efficency = 0
scene.materials.Matte__Material_Material_mat.emission.theta = 90
scene.materials.Matte__Material_Material_mat.emission.samples = -1
scene.materials.Matte__Material_Material_mat.emission.id = 0
scene.materials.Matte__Material_Material_mat.visibility.indirect.diffuse.enable = 1
scene.materials.Matte__Material_Material_mat.visibility.indirect.glossy.enable = 1
scene.materials.Matte__Material_Material_mat.visibility.indirect.specular.enable = 1
scene.materials.Matte__Material_Material_mat.shadowcatcher.enable = 0
scene.materials.Matte__Material_Material_mat.shadowcatcher.onlyinfinitelights = 0
scene.materials.MaterialSURFACE.type = "mix"
scene.materials.MaterialSURFACE.material1 = "__BLACK__"
scene.materials.MaterialSURFACE.material2 = "Matte__Material_Material_mat"
scene.materials.MaterialSURFACE.amount = "Implicit-ConstFloatTexture-474db1a5-3fc1-4334-b5e6-3ee09ed9fa07"
scene.materials.MaterialSURFACE.id = 13398304
scene.materials.MaterialSURFACE.emission.gain = 1 1 1
scene.materials.MaterialSURFACE.emission.power = 100
scene.materials.MaterialSURFACE.emission.efficency = 17
scene.materials.MaterialSURFACE.emission.theta = 90
scene.materials.MaterialSURFACE.emission.samples = -1
scene.materials.MaterialSURFACE.emission.id = 0
scene.materials.MaterialSURFACE.emission = "Implicit-ConstFloatTexture3-923c287d-2942-43ea-941c-0c3b1d55e840"
scene.materials.MaterialSURFACE.visibility.indirect.diffuse.enable = 1
scene.materials.MaterialSURFACE.visibility.indirect.glossy.enable = 1
scene.materials.MaterialSURFACE.visibility.indirect.specular.enable = 1
scene.materials.MaterialSURFACE.shadowcatcher.enable = 0
scene.materials.MaterialSURFACE.shadowcatcher.onlyinfinitelights = 0
scene.objects.Plane000.material = "groundSURFACE"
scene.objects.Plane000.ply = "mesh-00000.ply"
scene.objects.Plane000.transformation = 2.6944859 0 0 0 0 2.6944859 0 0 0 0 2.6944859 0 0 0 0 1
scene.objects.Sphere000.material = "MaterialSURFACE"
scene.objects.Sphere000.ply = "mesh-00001.ply"
scene.objects.Sphere000.transformation = 0.658479452 0 0 0 0 0.658479452 0 0 0 0 0.658479452 0 -0.595433474 -0.957952261 0.484843493 1

Write release notes

Write a release notes page at wiki.luxcorerender.org.

Upload LuxCore API oxygen documentation to the website

Upload LuxCore API oxygen documentation (i.e. the reference manual) to the ftp.luxcorerender.org web site.

Regression: Meshlights with many triangles take a very long time to initialize

I just updated to the latest LuxCore and somewhere in the last commits this regression happened I think.
I don't know what the last working commit was, but I think the one I had before was around 208f71b.

The problem: When I put a light emitting material on the LuxBall, the intialization takes a very long time (singlethreaded apparently). Before the regression this was instant, no noticeable difference between light emitting materials and non-light-emitting.
Here's a test scene:
testscene.zip

And here's the CPU usage during the startup (on the left it starts, on the right the render starts with all cores)

This is the log:

[SDL][4.850] Material definition: Material__001SURFACE
[SDL][4.852] The Luxball000 object is a light sources with 85824 triangles
[SDL][36.040] Scene objects count: 1
[SDL][36.041] The Luxball__ring000 object is a light sources with 12386 triangles
[SDL][40.490] Scene objects count: 3

Tested on Linux 64 bit no OpenCL.
P.S. once the render runs, I can move around the scene normally (very fast).

Write rendering halt condition documentation

At https://wiki.luxcorerender.org/LuxCore_SDL_Reference_Manual_v2.0#Rendering_halt_conditions

undefined symbol: rtcNewInstance2

Continued from: https://forums.luxcorerender.org/viewtopic.php?f=5&t=19&p=323#p320

Any scene I try crashes when I use TILEPATH engine.
Example: testfile.zip
I exported this simple scene with FILESAVER. When I try to start it with luxcoreui, it closes and the end of the log shows this:

[LuxRays][0.059] Adding DataSet accelerator: EMBREE
[LuxRays][0.059] Total vertex count: 4
[LuxRays][0.059] Total triangle count: 2
./bin/luxcoreui: symbol lookup error: ./bin/luxcoreui: undefined symbol: rtcNewInstance2

Maybe my build is messed up? I'll try a full rebuild.
edit: Did not help.
When started from Blender it crashes with a SIGSEGV when I try to stop the render.

By the way, it would make my life much easier if LuxCore would try to find files with incorrect filepaths in the current directory as a fallback.
(E.g. if "scene.scn" is not at the specified path that was set by FILESAVER, try to find it in the folder where the root render.cfg lies)

Move (most of) serialization code form header to source files

Move most of serialization Boost code form header to source files.

LuxCoreUI should not use call OpenCL render engines when OpenCL is disabled

LuxCoreUI should not use call OpenCL render engines when LuxCore is compiled without OpenCL support. For instance by pressing "1".

PATHOCL+METROPOLIS output difference with PATHOCL+RANDOM/SOBOL

Sometime there is a difference in average image luminance when rendering with PATHOCL+METROPOLIS and PATHOCL+RANDOM/SOBOL or PATHCPU+RANDOM/SOBOL/METROPOLIS.
This may be explained with the startup bias due to large number of tasks in OpenCL but may be also a bug.

CPU+RANDOM:

CPU+METROPOLIS:

GPU+RANDOM:

GPU+METROPOLIS:

LuxCore has a image write error after a certain render time

When I start a final render in Blender, LuxCore can't write the output image after a certain render time (approx. 10 minutes).

Blender LuxCore Log:

[...]
[LuxCore][25.531] [LinearToneMap] Kernels compilation time: 47ms
[LuxCore][623.922] Outputting film: RGB_IMAGEPIPELINE.png type: 2
Traceback (most recent call last):
  File "F:\Users\Michael\AppData\Roaming\Blender Foundation\Blender\2.79\scripts\addons\BlendLuxCore\engine\__init__.py", line 115, in render
    stats = utils_render.refresh(self, scene, config, draw_film, time_until_film_refresh)
  File "F:\Users\Michael\AppData\Roaming\Blender Foundation\Blender\2.79\scripts\addons\BlendLuxCore\utils\render.py", line 25, in refresh
    engine._session.UpdateStats()
RuntimeError: Error while writing an output type in Film::Output(): e0594766-e2cf-4246-b4ba-84bb197a903c.png
ERROR: Error while writing an output type in Film::Output(): e0594766-e2cf-4246-b4ba-84bb197a903c.png
[LuxCore][624.343] [GeForce GTX 1080 Intersect] Memory used for OpenCL image pipeline: 81076Kbytes
LuxCoreRenderEngine del
Error: Error while writing an output type in Film::Output(): e0594766-e2cf-4246-b4ba-84bb197a903c.png

Test scene:
full_export.zip

Write luxcoremerge tool

Write a command line tool for merging .flm (and .rsm).

Add the support for rendering save/resume

Add the support for rendering progress save/resume.

Standalone version is missing pyluxcore.so

LuxCoreRender standalone version is missing pyluxcore.so

Add the support for binary file format to FILESAVER

Add the support for an option for saving binary file format (i.e. .bcf, serialized RenderConfig) with FILESAVER render engine.

A camera/object motion blur problem

https://forums.luxcorerender.org/viewtopic.php?p=583#p583

Add an epsilon to 3D mapping for checkerboard texture

https://forums.luxcorerender.org/viewtopic.php?f=4&t=46

Check RenderEngine duplicate code with Film

Check if RenderEngine GetTotalSampleCount(), GetTotalSamplesSec() and GetRenderingTime() methods can be replace with the one in film class.

Implement Film::FromProperties()

Like other FromProperties() methods.

Motion blurred instanced objects

Add the support for motion blurred instanced objects.

Optimize Film serialization

Reduce size of Film file files and time for loading/saving.

Travis CI for releases

I just discovered that Travis CI can upload the compiled binaries to create releases on github:

https://docs.travis-ci.com/user/deployment/releases/
https://stackoverflow.com/questions/12343452/how-to-publish-artifacts-in-travis-ci/33109519#33109519
We could use this to automatically create test builds for people who want to use the bleeding edge binaries without compiling themselves (replacing the old daily builds).
But we could also use this to create final releases.

Now all we need is a cross compiler so Travis can also build Windows binaries for us and we'll never again have to package a release by hand...

Add periodic save support to LuxCoreUI

Add the support for all periodic save parameters to LuxCoreUI.

Red fringe when using dispersion on a sphere

I noticed a red fringe on a sphere with dispersion enabled (cauchyc 0.05).

Higher cauchy c value (0.2) makes it stronger:

I went back to 765fb61 and it shows the same red fringe.
So I do not think it was introduced in the latest glass sampling changes.

Classic API does not show this kind of fringe.

Testscene:
00019.zip

Investigate improvement of the Sobol sampler

https://forums.luxcorerender.org/viewtopic.php?f=2&t=53#p660

Optimize ImageMap class serialization

Optimize ImageMap class serialization code to run faster.

Do not crash when incorrect sampler is set for RTPATHOCL engine

Hi, it would be great if LuxCore would output a message that the right sampler is TILEPATHSAMPLER and not simply crash without output.
Similar to the other engines that require a special sampler.

Edit: the same happens with TILEPATHOCL and TILEPATHCPU engines.

Edit 2: weird, when I do a final render and use TILEPATHOCL with incorrect sampler, I get the desired runtime error:
RuntimeError: (RT)TILEPATHOCL render engine can use only TILEPATHSAMPLER
Seems I'm handling the error wrong during viewport renders, let me check.

During viewport render it also prints the runtime error to console, but afterwards Blender crashes:

Traceback (most recent call last):
  File "F:\Users\Simon_2\AppData\Roaming\Blender Foundation\Blender\2.79\scripts
\addons\BlendLuxCore\engine\__init__.py", line 82, in view_update_lux
    self._session.Start()
RuntimeError: (RT)TILEPATHOCL render engine can use only TILEPATHSAMPLER
Error: EXCEPTION_ACCESS_VIOLATION

F:\Users\Simon_2>

This is the code:

            try:
                self.update_stats("Creating Render Session...", "")
                self._session = self._exporter.create_session(context.scene, context)
                self._session.Start()
                self.update_stats("Viewport Render", "")
                return
            except Exception as error:
                self.update_stats("Error: ", str(error))
                import traceback
                traceback.print_exc()

EMBREE_MORTON doesn't work with the latest Embree

accelerator.bvh.builder.type = EMBREE_MORTON doesn't work with the latest Embree. It may be a Embree bug.

Want to back this issue? Post a bounty on it! We accept bounties via Bountysource.

Use boost::filesystem::extension()

Use boost::filesystem::extension() whenever possible (instead of string methods to check the file extension).

LuxCoreUI "space" doesn't reset pass count with PATHCPU

LuxCoreUI restart rendering doesn't reset pass count with PATHCPU.

Calling Scene::RemoveUnused*() with a resumed rendering trigger a crash

Calling Scene::RemoveUnused*() on a scene loaded form a resume rendering file trigger a crash.

Use boost::bimap

Use boost::bimap instead of 2 hast tables, sets, etc. in all definition repositories inside Scene class.

Check Film convergence test code

Verify Film convergence test code.

Write wiki documentation for pyluxcoreconsole and pyluxcoremerge

Write wiki documentation for pyluxcoreconsole and pyluxcoremerge.

Centralize the code for opening/creating files for serialization to a single function

Centralize the code for opening/creating the streams used for serialization in a single place to avoid to repeat always the same code.

Crash when editing mesh with light emitting material

Video: https://youtu.be/rsjq0loY-y0 (I try to move a face of the cube)
Scene: crash.zip

Happens on Windows and Linux.

visibility.indirect.*.enable does not seem to work

I'm setting the visibility like this:

scene.lights.__WORLD_BACKGROUND_LIGHT__.visibility.indirect.diffuse.enable = 1
scene.lights.__WORLD_BACKGROUND_LIGHT__.visibility.indirect.glossy.enable = 1
scene.lights.__WORLD_BACKGROUND_LIGHT__.visibility.indirect.specular.enable = 0

scene.zip
But when I test it with a sphere with mirror material (specular, right?) the sky2 is still visible in the reflection.
Do I misunderstand how this should work or is there a bug?

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