Information Clause

In accordance with the art. 13 section 1 and 2 of the European Parliament and Council Regulation 2016/679 of the 27th April, 2016 on the protection of natural persons, with regard to the processing of personal data and on the free movement of such data, and repealing Directive 95/46/EC (General Data Protection Regulation), hereafter RODO, I hereby inform that:

1. EVERMOTION S.C., 8 Przędzalniana Str., 15-688 Białystok, Poland is the Administrator of your Personal Data (APD)

2. Data Protection Inspector can be reached through e-mail:

3. Your personal data are to be processed on the basis of art. 6 section 1 letter a, b and f of RODO in order to:
a) prepare, conclude and execute the agreement and for other purposes approved by you,
b) to execute the legitimate interest like marketing of products and the agreement, claim assertion or defence against claims resulting from the law regulations.

4. Entities entitled to the reception of your personal data may be the authorised public bodies; mail providers; providers of the services covered by the agreement; responsible for debt recovery, keeping the archives, document utilization, legal consulting, technical services, IT services and accountancy.

5. Your personal data shall not be transferred to the third country, nor to the international bodies.

6. Your personal data shall be processed within the period of the agreement and upon your additional consent until you withdraw it. APD shall keep the data for the period of any civil law claim execution connected with the agreement.

7. You have the right to demand an access to your personal data, to correct or to delete the data if there is no other basis for the processing or any other purpose of such processing or to limit the processing of the data, to transfer the data to another administrator and to raise objections to the further data processing if there is no legal basis for further processing and to withdraw any previous consent.

8. You provide the personal data voluntarily, however they are necessary to conclude the agreement. The refusal of providing such data may result in the refusal of the agreement conclusion.

9. You have the right to lodge a complaint to the Personal Data Protection Office when in your opinion the data processing violates the regulations of General Data Protection Regulation of the 27 April, 2016 (RODO).

10. Your data will be automatically processed, including the form of profiling.
11. You are obligated to forward above mentioned information to your representative, especially if you appointed this person in the agreement as the contact person or as the representative for the agreement execution.


NOX updated to version 0.3.53

Marchewa 2013-05-01 12:00 article  > NOX

Introducing new engine - Bidirectional Path Tracing (BDPT).

BDPT works by tracing paths from both emitters and camera. Generated nodes on paths are joined in every possible way then. Meaning all points of geometry intersection are connected and their contribution to pixel energy is evaluated. In efficiency it can give both speed up or slow down comapared to Path Tracing (PT) which traces rays only from camera. Firstly cpu cost is much higher on BDPT since all connections have to be checked for shadow by other geometry. On the other hand in some situations generation of path can be a lot easier by doing it from light side. Finally number of samples per pixel is drastically decreased but each sample gives a lot better convergence to correct value compared to PT.

BDPT can give better results than PT in situations where it is hard to reach emitter from camera, like bulb hidden under lampshade. It is also hard to reach emitter on path that is a caustic. Connecting all the nodes on emitter and light paths can give better result in interior light evaluation. It has to be pointed out that BDPT is not a cure for all rendering problems. Situations where PT has no problems can't be evaluated faster on BDPT.

Here is list of situations where PT (old engine) will generally perform better:

  • exteriors
  • direct lighting dominance, like studio scenes
  • high-sampling requirement, like real DOF

Situations where BDPT will perform better:

  • interiors
  • lots of GI
  • caustics
  • IES emitters
  • covered emitters (like lampshades)

BDPT is set as default engine. It can be changed both in NOX or Max/Blender. This selection is kept in scene file.

It has to be told that paths from light are camera-independent and this leads to following two problems:
- in bad scenario you can sample paths from emitters that won't reach camera at all (cpu time waste)
- two buffers are needed to create image. This is because pure light paths (totally camera independent) samples can't be averaged like rest of paths. They are averaged per whole image in contrast to camera-dependent samples which are averaged per pixel.
If one insists on using BDPT on exterior scene it is suggested to keep it small. This is because for whole scene there is created virtual portal for sun to make it as starting points for emission. Unnecessary big portal gives lower samples per area which leads to higher noise. What I mean sun will illuminate parts of scene that gives small or none contribution to image - cpu time waste.

Author: Marchewa Editor: dr_After
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382933910 18:35:24  |  20-08-2014