StephaneS

Membre

Lieu : Paris (LFPL F-AGSS)

Inscription : 15-04-2008

Renommée :   1 

[P3D] Precision de l'autogen

Bonjour,
Je viens de tomber sur une info que je ne connaissais pas...Voila, je partage...

------------------------------------------------------
IMAGE_PIXELS_FOR_AUTOGEN_POLYGONS = X

Q: Flying in FSX/P3D I noticed that generated by autogen trees often grow on the surface of lakes or rivers, or in the middle of roads or highways. Also there are trees just before the runway on many small airports. Can it be eliminated?

A: The accuracy of mapping of the autogen objects location in FSX/P3D simulator can be improved by modifying a configuration file of the flight simulator: FSX.CFG / PREPAR3D.CFG. Using any text editor the content of the FSX.CFG / PREPAR3D.CFG file should be edited by adding below the section [TERRAIN] the following parameter:

IMAGE_PIXELS_FOR_AUTOGEN_POLYGONS=1024

The parameter has a range from 16 to 2048. The default setting is 16. Recommended settings is 256 or above, maybe 1024. It can be changed according to one's own preferences, eg. increasing to a maximum value of 2048. The higher value of the parameter allows for a greater precision in the annotation of autogen mapping. However, increasing the value may have a negative influence on the simulator graphics system and may cause a decline on Frame Rates (FPS). Users that tested the tweak claimed that there isn't any hit on FPS.

Original source with pics:
http://www.simdesign.pl/pages/show/freq … -questions
------------------------------------------------------

Dernière modification par StephaneS (22-08-2018 10:14:16)

lucky

Membre

Lieu : LFCS ou SAZM selon la saison

Inscription : 27-11-2008

Renommée :   29 

Re : [P3D] Precision de l'autogen

Merci !

---

CPU i7 8700K 3.7 GHz, 32 Go RAM DDR4 2400 MHz, Win 11 sur SSD 240 Go, RTX 4060 Ti 8 Go, Driver 566.14, résolution 1920x1080, casque VR Oculus Quest 2 avec câble Link Oculus, MSFS 2020 désinstallé, MSFS 2024 Aviator version Xbox Store installé sur SDD NVMe interne, XP12 sur SSB externe NVMe USB 3.2, AFS4, FSX, FS9, Condor 2 et 3, connexion Internet 250 Mbits/s

bede40

Membre

Lieu : Entre les deux oreilles

Inscription : 28-02-2012

Renommée :   81 

Re : [P3D] Precision de l'autogen

Le SDK de P3D dit:

Notes on Autogen Vegetation

    Polyline vegetation is rasterized into a sampling bitmap. The granularity of the rasterization is determined by the following setting in the Prepar3D.cfg file:

    [TERRAIN]
    IMAGE_PIXELS_FOR_AUTOGEN_POLYGONS=16

    The value of this setting is set at the minimum, 16, and can be any value up to 2048. The higher the number the more accurately a curved polygon will be rasterized. The value 16 indicates a rasterization of approximately 80 meters down to approximately 0.5 meter accuracy for the 2048 setting. There is a performance penalty with the time it takes to rasterize a region, and the memory required for the resulting sampling bitmap.

Donc: à 16 on a une précision de 80m en positionnement des sommets du polygone et au minimum 0.5m en mettant 2048.

---

Blédina: "Essayer c'est grandir"