/*
--------------------------------------------------------------------------------
This source file is part of SkyX.
Visit http://www.paradise-studios.net/products/skyx/

Copyright (C) 2009-2012 Xavier Verguín González <xavyiy@gmail.com>

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt.
--------------------------------------------------------------------------------
*/

#ifdef GL_ES
precision highp int;
precision highp float;
#endif

// ---------------------------- SkyX lightning ----------------------------------
// ------------------------------ GLSL Vertex -----------------------------------
#define USE_OGRE_FROM_FUTURE
#include <OgreUnifiedShader.h>

OGRE_UNIFORMS(
uniform mat4 uWorldViewProj;
uniform vec3 uData;
)

MAIN_PARAMETERS
IN(vec4 vertex, POSITION)
IN(vec3 colour, COLOR)
IN(vec2 uv0, TEXCOORD0)
OUT(vec3 vUV, TEXCOORD0)
OUT(vec4 vData, TEXCOORD1)
MAIN_DECLARATION
{
  // Clip space position
	gl_Position = mul(uWorldViewProj, vertex);
  vUV.xy = uv0;
 
  // Alpha
  vUV.z = uData.x; 
 
  if (colour.x > 0.5)
  {
    // Reverse y coord and mark
    vUV.y = 2.0 + (1.0 - vUV.y);
  }
 
  vData.xy = colour.yz;
  vData.zw = uData.yz;
}