Built basic UI Grid.

assets/shaders/textured.frag

@@ -1,25 +1,11 @@
-#version 300 es
+#version 330 core
 
-#ifdef GL_ES
-  in mediump vec2 TexCoord;
-  uniform mediump sampler2D u_Text;
-  out mediump vec4 FragColor;
-  
-  void main() {
-    mediump vec4 color = texture(u_Text, TexCoord);
-    // if(color.a == 0.0) discard;
-    FragColor = color;
-  }
-#else
-  #version 330 core
+in vec2 TexCoord;
+uniform sampler2D u_Text;
+uniform vec4 u_Colr;
+out vec4 FragColor;
 
-  in vec2 TexCoord;
-  uniform sampler2D u_Text;
-  out vec4 FragColor;
-
-  void main() {
-    vec4 color = texture(u_Text, TexCoord);
-    // if(color.a == 0.0) discard;
-    FragColor = color;
-  }
-#endif
+void main() {
+  vec4 color = texture(u_Text, TexCoord);
+  FragColor = color * u_Colr;
+}