HUD-Texture renders.

HUD-Texture renders and the whole screen is black.

Still TODO:

- Will have to sort out alpha
- Clean up

refs #472 @5h

shaders/ui/fragment.shader

@@ -1,8 +1,10 @@
-#version 330
+#version 110
 
-uniform sampler2D blitTexture;
+uniform sampler2D tex;
+varying vec2 texcoord;
 
-void main(void)
+void main()
 {
-    
+
+    gl_FragColor = texture2D(tex, texcoord);
 }

shaders/ui/vertex.shader

@@ -1,6 +1,10 @@
-#version 330
+#version 110
+
+attribute vec2 position;
+varying vec2 texcoord;
 
 void main()
 {
-  //null-program
+    gl_Position = vec4(position, 0.0, 1.0);
+    texcoord = position * vec2(0.5) + vec2(0.5);
 }