copied from the old Ppoject:

shaders,
object class
Modified to use better names and use Qt things

MeshViewerQt/Resources/MainWindow.qrc

@@ -5,5 +5,7 @@
     <qresource prefix="/shaders">
         <file>simple.frag</file>
         <file>simple.vert</file>
+        <file>TextureShader.frag</file>
+        <file>TextureShader.vert</file>
     </qresource>
 </RCC>

MeshViewerQt/Resources/TextureShader.frag

@@ -0,0 +1,12 @@
+#version 450
+
+// Input
+in vec2 UV;
+
+// Output
+out vec4 color;
+
+void main()
+{
+	color = texture(textureSampler, UV).rgb;
+}

MeshViewerQt/Resources/TextureShader.vert

@@ -0,0 +1,17 @@
+#version 450
+
+// Input vertex data, different for all executions of this shader
+layout(location = 0) in vec3 vertexPosition;
+layout(location = 1) in vec3 vertexUV;
+
+// Input that stay constant fpr the whole mesh
+uniform mat4 MVP;
+
+// Output
+out vec2 UV;
+
+void main()
+{
+	gl_Position = MVP * vec4(vertexPosition, 1);
+	UV = vertexUV;
+}