/**
 * @file class3/deferred/screenSpaceReflPostV.glsl
 *
 * $LicenseInfo:firstyear=2007&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2007, Linden Research, Inc.
 *
 * This library 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;
 * version 2.1 of the License only.
 *
 * This library 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 library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

uniform mat4 projection_matrix;
uniform mat4 inv_proj;

ATTRIBUTE vec3 position;

uniform vec2 screen_res;

VARYING vec2 vary_fragcoord;
VARYING vec3 camera_ray;


void main()
{
	//transform vertex
	vec4 pos = vec4(position.xyz, 1.0);
	gl_Position = pos; 
	
	vary_fragcoord = pos.xy * 0.5 + 0.5;

	vec4 rayOrig = inv_proj * vec4(pos.xy, 1, 1);
    camera_ray = rayOrig.xyz / rayOrig.w;

}