Texture.cfg (FSX)

Overview

FSX implements a new method to reduce the amount of disk-space required to create aircraft containers.

Pre FSX

Every aircraft repaint required a full complement of the model's textures to be present in every texture livery folder.

There was a basic fallback option, utilising the FS\texture folder for textures common across all aircraft & scenery.

In FSX

FSX utilises an enhanced Texture Fallback Scheme.

In its most basic form, an aircraft model only requires a single folder containing all that model's textures.

This folder is that aircraft's default texture fallback folder.

Each livery then need only contain those textures different from the default.

Plus a text file named texture.cfg, and that livery's thumbnail.jpg

texture.cfg

The texture config file contains references to the relative paths of the various fallback folders.

These references are ranked in order of fallback.

Fallback.#= supplemental texture directories outside of root texture folder

A copy of the texture.cfg is placed in every livery's texture folder.

Fallback texture files do not override textures found in the texture folder originally being called.

thumbnail.jpg

A small image of that aircraft livery for display in the select aircraft dialog.

Bugs

1. There is an incorrect path error in the FSX default aircraft's fallback.3 reference, (see below).
2. There is an acknowledged "bug" that sometimes causes FSX -
   • To lose track of where common textures are located.
   • thumbnail.jpg images to become "out of synch" with their parent folder.
   • Multiplayer users to sometimes see other players, or their own, aircraft, displaying incorrect liveries, or the default livery.
   • To display some legacy aircraft incorrectly, as their texturing depends on accessing default files

     e.g. GlobalEnv*.dds

     which are located in -

     C:\Program Files\Microsoft Games\Microsoft Flight Simulator X\Texture

     Inclusion of an appropriate texture.cfg will correct some of their issues.

Fix

The solution for all models is to -

(a) use the ..\texture folder only for common textures and have dedicated ..\texture.variation folders for all the unique textures for every livery...

...and...

(b) write a custom texture.cfg file that will provide accurate fallback paths.

For Existing Models

To fix this issue for pre-existing 3rd party, or FSX default aircraft.

For the sake of simplicity only, in the following example I've used the numbering system adopted for FSX default aircraft.

Folder Structure

The aircraft folder structure should be -

	..\texture
		all common textures, including those for the ''default livery''.
	
	..\texture.0
		contains no textures
		thumbnail.jpg
		texture.cfg
	
	..\texture.1
		all unique textures for livery 1
		thumbnail.jpg
		texture.cfg
	
	..\texture.2
		all unique textures for livery 2
		thumbnail.jpg
		texture.cfg

The additional folder ..\texture.0 acts as the unique livery reference for that livery previously referenced by ..\texture

aircraft.cfg

Generally, in the aircraft.cfg this was accessed by -

	[fltsim.0]
	texture=

Which would now become -

	[fltsim.0]
	texture=0

I said generally, as some default FSX aircraft have non-rational numbering applied.

texture.cfg

	fallback.1=..\texture
	fallback.2=..\..\..\..\Scenery\Global\texture
	fallback.3=..\..\..\..\Texture

See below.

For New models

Proposed methodology for new models -

For example:

    ..\texture.common
        all common textures.dds
    ..\texture.Livery1
        all unique textures for Livery1.dds
        thumbnail.jpg
        texture.cfg
    ..\texture.Livery2
        all unique textures for Livery2.dds
        thumbnail.jpg
        texture.cfg

texture.cfg

    [fltsim]
    fallback.1=..\texture.common
    fallback.2=..\..\..\..\Scenery\Global\texture
    fallback.3=..\..\..\..\Texture

fallback.3

fallback.3 provides a valid path to the following common textures -

    Fresnel_Ramp.dds
    FresnelTest.bmp
    FresnelWater.bmp
    GENFresnel.dds
    GlobalEnv_AC_Chrome.dds
    GlobalEnv_AC_Chrome_32.dds
    GlobalEnv_AC_Chrome_64.dds
    GlobalEnv_AC_Chrome_128.dds
    GlobalEnvTest.dds