/******************************************************************************

* The MIT License (MIT)

*

* Copyright (c) 2015-2017 Baldur Karlsson

*

* 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.

******************************************************************************/

layout (location = 0) in vec4 position;

layout (location = 1) in vec4 IN_secondary;

#ifndef OPENGL_ES

out gl_PerVertex

{

vec4 gl_Position;

float gl_PointSize;

};

#endif

layout (location = 0) out vec4 OUT_secondary;

layout (location = 1) out vec4 norm;

void main(void)

{

vec2 psprite[4] = vec2[]

(

vec2(-1.0f, -1.0f),

vec2(-1.0f, 1.0f),

vec2( 1.0f, -1.0f),

vec2( 1.0f, 1.0f)

);

vec4 pos = position;

if(Mesh.homogenousInput == 0u)

{

pos = vec4(position.xyz, 1);

}

else

{

#ifdef VULKAN

pos = vec4(position.x, -position.y, position.z, position.w);

#endif

}

gl_Position = Mesh.mvp * pos;

gl_Position.xy += Mesh.pointSpriteSize.xy*0.01f*psprite[VERTEX_ID%4]*gl_Position.w;

OUT_secondary = IN_secondary;

norm = vec4(0, 0, 1, 1);

#ifdef VULKAN

// GL->VK conventions

gl_Position.y = -gl_Position.y;

if(Mesh.rawoutput == 0)

{

gl_Position.z = (gl_Position.z + gl_Position.w) / 2.0;

}

gl_PointSize = 4.0f;

#endif

}