wavefront obj support

hexworld/res/obj.fs.glsl

@@ -0,0 +1,14 @@
+#version 440
+
+in vec2 vcoord;
+in float light;
+
+uniform sampler2D tex;
+
+void main ()
+{
+	vec4 color = texture(tex, vcoord);
+	color.w = 1;
+	color.xyz *= light;
+	gl_FragColor = clamp(color, 0, 1);
+}