resources paths refact

res/shaders/screen.glslf

@@ -0,0 +1,10 @@
+#version 330 core
+
+in vec2 v_coord;
+out vec4 f_color;
+
+uniform sampler2D u_texture;
+
+void main(){
+	f_color = texture(u_texture, v_coord);
+}