/*
-----------------------------------------------------------------------------
This source file is part of OGRE
(Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org

Copyright (c) 2000-2013 Torus Knot Software Ltd
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
-----------------------------------------------------------------------------
*/

//-----------------------------------------------------------------------------
// Program Name: FFPLib_Transform
// Program Desc: Transform functions of the FFP.
// Program Type: Vertex shader
// Language: GLSL
// Notes: Implements core functions for FFPTransform class.
// based on transform engine. 
// See http://msdn.microsoft.com/en-us/library/bb206269.aspx
//-----------------------------------------------------------------------------


//-----------------------------------------------------------------------------
void FFP_Transform(in mat4 m, 
			 in vec4 v, 
			 out vec4 vOut)
{
	vOut = m * v;
}

//-----------------------------------------------------------------------------
void FFP_Transform(in mat4 m, 
				   in vec4 v, 
				   out vec3 vOut)
{
	vOut = (m * v).xyz;
}

//-----------------------------------------------------------------------------
void FFP_Transform(in mat3x4 m, 
				   in vec3 v, 
				   out vec3 vOut)
{
	vOut = mat3(m) * v;
}


//-----------------------------------------------------------------------------
void FFP_Transform(in mat4 m, 
				   in vec3 v, 
				   out vec3 vOut)
{
	vOut = mat3(m) * v;
}
