you can now print images on the screen

shaders/basic.frag

@@ -3,9 +3,12 @@
 layout(location = 0) out vec4 f_color;
 
 in vec4 v_color;
+in vec2 v_texCoord;
+uniform sampler2D u_texture;
 
 uniform vec4 u_color;
 
 void main() {
-    f_color = u_color;
+    vec4 texColor = texture(u_texture, v_texCoord);
+    f_color = texColor;
 }