Added test cube for model loading, discovered vertices are alright it appears to be an issue with the textures.

data/models/cube/cube.mtl

@@ -0,0 +1,13 @@
+# Blender MTL File: 'cube.blend'
+# Material Count: 1
+
+newmtl Material
+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 0.000000 0.000000 0.000000
+Ni 1.450000
+d 1.000000
+illum 2
+map_Kd Bake.jpg

data/models/cube/cube.obj

@@ -0,0 +1,50 @@
+# Blender v2.83.5 OBJ File: 'cube.blend'
+# www.blender.org
+mtllib cube.mtl
+o Cube
+v 1.000000 1.000000 -1.000000
+v 1.000000 -1.000000 -1.000000
+v 1.000000 1.000000 1.000000
+v 1.000000 -1.000000 1.000000
+v -1.000000 1.000000 -1.000000
+v -1.000000 -1.000000 -1.000000
+v -1.000000 1.000000 1.000000
+v -1.000000 -1.000000 1.000000
+vt 0.331683 0.668317
+vt 0.331683 0.998350
+vt 0.001650 0.998350
+vt 0.001650 0.668317
+vt 0.334984 0.331683
+vt 0.334984 0.001650
+vt 0.665017 0.001650
+vt 0.665017 0.331683
+vt 0.665017 0.665017
+vt 0.334984 0.665017
+vt 0.334984 0.334984
+vt 0.665017 0.334984
+vt 0.998350 0.331683
+vt 0.668317 0.331683
+vt 0.668317 0.001650
+vt 0.998350 0.001650
+vt 0.331683 0.331683
+vt 0.001650 0.331683
+vt 0.001650 0.001650
+vt 0.331683 0.001650
+vt 0.331683 0.665017
+vt 0.001650 0.665017
+vt 0.001650 0.334984
+vt 0.331683 0.334984
+vn 0.0000 1.0000 0.0000
+vn 0.0000 0.0000 1.0000
+vn -1.0000 0.0000 0.0000
+vn 0.0000 -1.0000 0.0000
+vn 1.0000 0.0000 0.0000
+vn 0.0000 0.0000 -1.0000
+usemtl Material
+s off
+f 1/1/1 5/2/1 7/3/1 3/4/1
+f 4/5/2 3/6/2 7/7/2 8/8/2
+f 8/9/3 7/10/3 5/11/3 6/12/3
+f 6/13/4 2/14/4 4/15/4 8/16/4
+f 2/17/5 1/18/5 3/19/5 4/20/5
+f 6/21/6 5/22/6 1/23/6 2/24/6

src/main.cpp

@@ -186,7 +186,8 @@ int main(int argc, char **argv) {
 
   model.translate(glm::vec3(1.0f, 0.0f, 0.0f));
 
-  Model backpack(ROOT_DIR "data/models/backpack/backpack.obj");
+  // Model backpack(ROOT_DIR "data/models/backpack/backpack.obj");
+  Model cube(ROOT_DIR "data/models/cube/cube.obj");
 
   // Mess with perspective
   // Projection matrix : 45° Field of View, 4:3 ratio, display range : 0.1
@@ -203,7 +204,7 @@ int main(int argc, char **argv) {
   glEnable(GL_DEPTH_TEST);
   glEnable(GL_CULL_FACE);
   // glCullFace(GL_FRONT);
-  glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+  glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
 
   // Game loop
   bool running = true;
@@ -227,9 +228,9 @@ int main(int argc, char **argv) {
     shader.setMat4("MVP", camera.getMVP());
 
     // Draw Meshes
-    model2.draw(shader);
+    // model2.draw(shader);
-    model.draw(shader);
+    // model.draw(shader);
-    backpack.draw(shader);
+    cube.draw(shader);
 
     // Finally render everything
     shader.use();