
/*
** Copyright (c) 2012 The Khronos Group Inc.
**
** Permission is hereby granted, free of charge, to any person obtaining a
** copy of this software and/or associated documentation files (the
** "Materials"), to deal in the Materials without restriction, including
** without limitation the rights to use, copy, modify, merge, publish,
** distribute, sublicense, and/or sell copies of the Materials, and to
** permit persons to whom the Materials are 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 Materials.
**
** THE MATERIALS ARE 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
** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
*/


attribute vec4 gtf_Vertex;
uniform mat4 gtf_ModelViewProjectionMatrix;
varying vec4 color;



void qualifiers(in float a[4], out float b[4], inout float c[4], const in float d[4], float e[4])
{
    b[0] = a[0];
    c[0] += d[0];
    a[0] += 1.0;
    e[0] += 1.0;

    b[1] = a[1];
    c[1] += d[1];
    a[1] += 1.0;
    e[1] += 1.0;

    b[2] = a[2];
    c[2] += d[2];
    a[2] += 1.0;
    e[2] += 1.0;

    b[3] = a[3];
    c[3] += d[3];
    a[3] += 1.0;
    e[3] += 1.0;
}




void main (void)
{
    float a[4];
    float b[4];
    float c[4];
    float d[4];
    float e[4];
    float q = 0.0;
    float q2 = 0.0;

    a[0] = 1.0;
    b[0] = 2.0;
    c[0] = 3.0;
    d[0] = 4.0;
    e[0] = 1.0;

    a[1] = 1.0;
    b[1] = 2.0;
    c[1] = 3.0;
    d[1] = 4.0;
    e[1] = 1.0;

    a[2] = 1.0;
    b[2] = 2.0;
    c[2] = 3.0;
    d[2] = 4.0;
    e[2] = 1.0;

    a[3] = 1.0;
    b[3] = 2.0;
    c[3] = 3.0;
    d[3] = 4.0;
    e[3] = 1.0;

    qualifiers(a, b, c, d, e);

    // randomly test a value
    if(a[0] == 1.0) q += 1.0;
    if(b[1] == 1.0) q += 2.0;
    if(c[2] == 7.0) q += 4.0;
    if(d[3] == 4.0) q2 += 1.0;
    if(e[0] == 1.0) q2 += 2.0;

    color = vec4(vec2(q / 7.0, q2 / 3.0), 1.0, 1.0);
    gl_Position = gtf_ModelViewProjectionMatrix * gtf_Vertex;
}
