diff --git a/Models/backpack/ao.jpg b/Models/backpack/ao.jpg
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diff --git a/Models/backpack/backpack.mtl b/Models/backpack/backpack.mtl
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-# Blender MTL File: 'None'
-# Material Count: 1
-
-newmtl Scene_-_Root
-Ns 225.000000
-Ka 1.000000 1.000000 1.000000
-Kd 0.800000 0.800000 0.800000
-Ks 0.500000 0.500000 0.500000
-Ke 0.0 0.0 0.0
-Ni 1.450000
-d 1.000000
-illum 2
-map_Kd diffuse.jpg
-map_Bump normal.png
-map_Ks specular.jpg
-
diff --git a/Models/backpack/diffuse.jpg b/Models/backpack/diffuse.jpg
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diff --git a/Models/backpack/roughness.jpg b/Models/backpack/roughness.jpg
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diff --git a/Models/backpack/source_attribution.txt b/Models/backpack/source_attribution.txt
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-Model by Berk Gedik, from: https://sketchfab.com/3d-models/survival-guitar-backpack-low-poly-799f8c4511f84fab8c3f12887f7e6b36
-
-Modified material assignment (Joey de Vries) for easier load in OpenGL model loading chapter, and renamed albedo to diffuse and metallic to specular to match non-PBR lighting setup.
\ No newline at end of file
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