Why so significant difference in render results??

[Walker]

Hello all!

I have downloaded LuxRender v0.8 (no OpenCL) from http://www.luxrender.net/en_GB/standalone#windows and LuxRender weekly build from http://www.luxrender.net/forum/viewtopic.php?f=30&t=8099. Also i have a simple scene (*.lxs) with ruby. Rendering results (1 hour on 4 cores) using the above versions are very different. Here they are:

LuxRender v0.8

and

Weekly build

Is it normal such poor light in development build? And what may it cause?

[Meelis]

Maybe path depth is too low, not sure.
Does it render better with one of this rendering settings?

Code: Select all

# Main Scene File

Renderer "sampler"

Sampler "erpt"
   "integer pixelsamples" [16]
   "string pixelsampler" ["vegas"]
   "integer chainlength" [1024]
   "string basesampler" ["random"]

Accelerator "qbvh"

SurfaceIntegrator "bidirectional"
   "integer eyedepth" [128]
   "integer lightdepth" [128]
   "string strategy" ["all"]
   "float eyerrthreshold" [0.983]
   "float lightrrthreshold" [0.983]

VolumeIntegrator "multi"
   "float stepsize" [0.010000000000000]

PixelFilter "gaussian"
   "float xwidth" [3.000000000000000]
   "float ywidth" [3.000000000000000]
   "float alpha" [3.000000000000000]

Code: Select all

# Main Scene File

Renderer "sampler"

Sampler "random"
   "integer pixelsamples" [16]
   "string pixelsampler" ["vegas"]

Accelerator "qbvh"

SurfaceIntegrator "bidirectional"
   "integer eyedepth" [128]
   "integer lightdepth" [128]
   "string strategy" ["all"]
   "float eyerrthreshold" [0.983]
   "float lightrrthreshold" [0.983]

VolumeIntegrator "multi"
   "float stepsize" [0.010000000000000]

PixelFilter "gaussian"
   "float xwidth" [3.000000000000000]
   "float ywidth" [3.000000000000000]
   "float alpha" [3.000000000000000]

Can it be the first image has light source smaller (point like),
2'nt has larger light source? Or scene is identical?

[Walker]

Meelis,thank you for fast reply, but i have only one scene. And different render results on it.

[Meelis]

Give it a try without bidir?

[Walker]

Give it a try without bidir?

Images in the begining of the post were made using PATH.
I have already tried with different settings... Different surface integrators, volume integrators etc. But always luxrender v0.8 results significantly differs from weekly build results.

[Meelis]

Can you share the blend file?

[A-man]

I have the same problem while trying to port my Cornell box scene over to blender 2.6. It looks nothing at all like the original..

[zeealpal]

Just to double check, the normals are still the same in each??

[SATtva]

Walker, can you provide the scene file?

[Walker]

Walker, can you provide the scene file?

Here it is.

Ruby.7z

RubyScene

(3.5 KiB) Downloaded 17 times