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TBot1 is the earliest predecessor we have to DOG. The model has been removed, but the textures are still present in the Leak, under "/materials/models/Obsolete/TBot1". It has a long and diverse history, with many interesting ties to the past.

It is very unoptimized, with nearly every texture in the entire folder being 512x512. Likely, it was cut before efforts to optimize it began, like with the Gasmask Citizen or Gauss Gun.

Gunbarrell - Odd Blue Transparency

GunBarrell

On GunBarrell, blue instead of alpha[1]is used to indicate areas where transparency should be applied, since it is applied in consistently spaced circles, with a likely intent of making it look air-cooled. This has many parallels with Half-Life's method of creating transparent textures for maps. For this system to work, several conditions, among others, have to be met:

  • Textures must be prefixed with {.
  • Where the transparency is to apply, a perfect blue (0 0 255) must be placed. Any other color will not work.

The first requirement is not met, but perhaps this is the result of engine advancement solely detecting transparency with perfect blue placement.

However, the condition of perfect blue in this texture is also not met - all of the textures using the blue are also using DXT compression, which is a lossy format. This means that the perfect blues would very often be changed enough to be imperfect, but not enough to not still obviously be blue.

Considering this, it would seem that this file has been neglected, perhaps as a result of lazily transitioning textures from a previous format. It's an oddity, as other textures in the same folder actively use alpha channels.
This may indicate, since two different "styles" of transparency are present, that the weapons attached to the body were abandoned before TBot itself was.

Reference Textures

TBot1 uses a number of different "reference" textures as bases for the artist to draw upon. In some cases, recovery of the original is possible thanks to a large amount of unused space.

Scratched Metal

A stained yellow sheet of metal with several scratches.

Other Appearances

This same texture is also used in several other W_-era models, for various roles.

  • Attempted recreation of the reference.
  • \materials\Models\Vehicles\W_Temp_Car\W_64Thunder.vtf
  • \materials\Models\Lighting\W_DeskLamp(256x128).vtf
  • \materials\Models\Fire_equipment\W_WeldTank\W_WeldTank (merge) (512).vtf
  • \materials\Models\Lighting\W_FloodLightW_FloodLight.vtf
  • \materials\Models\Weapons\wscanner_grenade\wscanner_grenade.vtf
  • \materials\Models\Furniture\W_Chair\W_ChairChrome(256x128).vtf

Rust

Other Appearances

Travis Bot 1

TODO -- There was once an email on Valve Cut Content - by Bun? idk that mentioned that TBot1 stood for Travis Bot 1 (or something like it). Could someone figure this out?

Transition to "Blue" Dog

TBot1 was eventually succeeded by the multi-sheet DOG, with of the UVs still in use. An interesting bit to note about the multi-sheet dog is that seams between differing merged individual textures are visible, hinting at earlier intermediate stages before it was put in said sheets.

Textural similarities

Old DOG

TBot1

DogSheet1.vtf

Sheet1 back
ABackPlate noalpha

DogSheet1.vtf

Sheet1 thing1
AHip

DogSheet2.vtf

Sheet1 fork
AShin2Left

DogSheet2.vtf

Sheet2 scratches
AShin

DogSheet2.vtf

Sheet3 hand
AFoot

DogSheet3.vtf

Sheet3 shoulder
Shoulder

DogSheet4.vtf

Sheet4 piston
Pistons

Gallery

Body Textures

Weapon Textures

References

  1. Gunbarrell does not have an alpha channel.

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