Basic texturing support

shaders/hex.frag

@@ -1,7 +1,9 @@
 #version 330 core
+in vec2 frag_uv;
 out vec4 final_color;
 uniform vec4 hex_color;
+uniform sampler2D tex;
 void main()
 {
-  final_color = hex_color;
+  final_color = texture(tex, frag_uv) * hex_color;
 }

shaders/hex.vert

@@ -5,7 +5,10 @@ uniform mat4 model;
 uniform mat4 view;
 uniform mat4 proj;
 
+out vec2 frag_uv;
+
 void main()
 {
   gl_Position = proj * view * model * vec4(pos, 1.0f);
+  frag_uv = uv;
 }