Add initial prototype.

3-mid/opengl/assets/shader/textured.frag

@@ -0,0 +1,12 @@
+#version 140
+
+uniform sampler2D   sTexture; 
+
+varying vec4        vColor;
+varying vec2        vCoords;
+
+
+void main()
+{
+   gl_FragColor = texture2D (sTexture, vCoords)  *  vColor;   // Modulate light color with texture.
+}