118 lines
3.6 KiB
GLSL
118 lines
3.6 KiB
GLSL
/*
|
|
-----------------------------------------------------------------------------
|
|
This source file is part of OGRE
|
|
(Object-oriented Graphics Rendering Engine)
|
|
For the latest info, see http://www.ogre3d.org
|
|
|
|
Copyright (c) 2000-2014 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
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
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 mat3 m,
|
|
in vec3 v,
|
|
out vec3 vOut)
|
|
{
|
|
vOut = mul(m, v);
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
void FFP_Transform(in mat4 m,
|
|
in vec4 v,
|
|
out vec4 vOut)
|
|
{
|
|
vOut = mul(m, v);
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
void FFP_Transform(in mat4 m,
|
|
in vec4 v,
|
|
out vec3 vOut)
|
|
{
|
|
vOut = mul(m, v).xyz;
|
|
}
|
|
|
|
#ifdef OGRE_HLSL
|
|
void FFP_Transform(in float3x4 m,
|
|
in float4 v,
|
|
out float3 vOut)
|
|
{
|
|
vOut = mul(m, v);
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
void FFP_Transform(in float3x4 m,
|
|
in float3 v,
|
|
out float3 vOut)
|
|
{
|
|
vOut = mul((float3x3)m, v);
|
|
}
|
|
#elif !defined(OGRE_GLSLES) || OGRE_GLSLES > 100
|
|
//-----------------------------------------------------------------------------
|
|
void FFP_Transform(in mat3x4 m,
|
|
in vec4 v,
|
|
out vec3 vOut)
|
|
{
|
|
/* transpose non-square uniform matrix for correct row-major > column-major mapping
|
|
* to keep the indexing inside the shader so mat[0] returns the same data in both GLSL and HLSL
|
|
* although it will be the first row in HLSL and the first column in GLSL
|
|
*/
|
|
vOut = v * m;
|
|
}
|
|
|
|
void FFP_Transform(in mat3x4 m,
|
|
in vec3 v,
|
|
out vec3 vOut)
|
|
{
|
|
vOut = v * mat3(m);
|
|
}
|
|
#endif
|
|
|
|
//-----------------------------------------------------------------------------
|
|
void FFP_Transform(in mat4 m,
|
|
in vec3 v,
|
|
out vec3 vOut)
|
|
{
|
|
#ifdef OGRE_HLSL
|
|
vOut = mul((float3x3)m, v);
|
|
#else
|
|
vOut = mat3(m) * v;
|
|
#endif
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
void FFP_DerivePointSize(in vec4 params,
|
|
in float d,
|
|
out float sz)
|
|
{
|
|
sz = params.x/sqrt(params.y + params.z*d + params.w*d*d);
|
|
}
|