added a texture class

shaders/shader.fs

@@ -1,7 +1,12 @@
 #version 330 core
 out vec4 FragColor;
+  
+in vec3 ourColor;
+in vec2 TexCoord;
+
+uniform sampler2D ourTexture;
 
 void main()
 {
-    FragColor = vec4(1.0f, 0.5f, 0.2f, 1.0f);
+    FragColor = texture(ourTexture, TexCoord);
 }

shaders/shader.vs

@@ -1,7 +1,14 @@
 #version 330 core
 layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aColor;
+layout (location = 2) in vec2 aTexCoord;
+
+out vec3 ourColor;
+out vec2 TexCoord;
 
 void main()
 {
-    gl_Position = vec4(aPos.x, aPos.y, aPos.z, 1.0);
+    gl_Position = vec4(aPos, 1.0);
+    ourColor = aColor;
+    TexCoord = aTexCoord;
 }