LuxCoreRender Forums

Hey Guys Could you be so kind and explain to me the last part of this formula taken from the Luxcore code.
src\slg\film\imagepipeline\plugins\tonemaps\luxlinear.cpp:

float LuxLinearToneMap::GetScale(const float gamma) const {
return exposure / (fstop * fstop) * sensitivity * .65f / 10.f * powf ...

It looks that I have solved the issue.
The problem was with serialization and desalinization of causticPhotonsBVH.
It was missing photonTracedCount in serialization.

So when the cache was loaded from file, Luxcore was taking random number of photons. If the number was smaller than array size, the ...

In my opinion he is loading cache. There is no messages in log about building the cache and in Preproces() funcion I made a small chage:

if (boost::filesystem::exists(params.persistent.fileName)) {
// Load the cache from the file
LoadPersistentCache(params.persistent.fileName ...

Hi Guys,
now I have simplified the problem. I have a scene (find in attachments) that I start using Luxcore UI. I start it 3 times and I get 3 different results. So the seed is constant, camera position is constant. I thought that the PhotonGI cache should resolve flickering issues but it looks that ...

I simplified the problem to one machine:
Render first frame and make luxcore save the pgi file.
while(noAllFramesRendered)
{
start render of next frame
make luxcore load pgi file
after frame is finished close luxcore
}

Some frames are correct some are not.
So it looks that loading pgi file from ...

I'm working with daros on animation issues. We are trying to activate photongi cache. We have found a very strange behavior when rendering frames on multiple machines.
1. If we start animation with photongi cache disabled the result is correct but the render is very slow.
2. If we enable photnongi ...

Hi Guys,
I want to ask if there is some way to create more instances of the same VDB volume in an efficient way.
I have following volume definition:

scene.textures.VDB_density_texture.type = "densitygrid"
scene.textures.VDB_density_texture.nx = 295
scene.textures.VDB_density_texture.ny = 519
scene ...

On question.
I have a loop that checks session->HasDone()
Do I have to call session->Stop() when the render ends and HasDone() returns true?

Hi Guys,
I have a strange issue. We are trying to render an animation. For some reason some of the frames have low sample level. I will explain in detail.
I load the whole scene. I set the camera position for current frame. I set desired sample level in session config and start render. I can see the ...

Hi guys. Finally I've found the solution.
The ray that is passed to Embree library has Nan in origin and direction. That makes embree library scan all geometry.
So the solution is to add:

if (isnan(ray->o.x) || isnan(ray->o.y) || isnan(ray->o.z) || isnan(ray->d.x) || isnan(ray->d.y) || isnan(ray ...