/*
Copyright (c) 2019 The Khronos Group Inc.
Use of this source code is governed by an MIT-style license that can be
found in the LICENSE.txt file.
*/


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

struct nestb
{
	bvec2 a2;
	bvec3 b2;
	bvec4 c2;
};

struct nesta
{
	bvec2 a1;
	bvec3 b1;
	bvec4 c1;
	nestb nest_b;
};

struct nest
{
	nesta nest_a;
};

void main (void)
{

	nest s = nest( nesta( bvec2(12, 13), bvec3(14.0, 0.0, 139.0), bvec4(25.5, 17.0, 145, 163 ),
                       nestb( bvec2(28, 0), bvec3(0.0, 0.0, 1.0), bvec4(0.0, 17.0, 145, 0 )
                            )
                            )
                      );

	float gray = 0.0;

	if( ( s.nest_a.a1[0] ) && ( s.nest_a.a1[1] ) &&
            ( s.nest_a.b1[0] ) && (! (s.nest_a.b1[1]) ) && ( s.nest_a.b1[2] ) &&
            ( s.nest_a.c1[0] ) && ( s.nest_a.c1[1] ) && ( s.nest_a.c1[2] ) && ( s.nest_a.c1[3] ) &&
            ( s.nest_a.nest_b.a2[0] ) && ( !( s.nest_a.nest_b.a2[1] ) ) &&
            (! ( s.nest_a.nest_b.b2[0] ) ) && (! ( s.nest_a.nest_b.b2[1] ) ) && (s.nest_a.nest_b.b2[2]) &&
            (! ( s.nest_a.nest_b.c2[0] ) ) && (s.nest_a.nest_b.c2[1]) && (s.nest_a.nest_b.c2[2]) && (! ( s.nest_a.nest_b.c2[3] ) )
          )
	  gray=1.0;
	else
          gray =0.0;
	color = vec4(gray, gray, gray, 1.0);

	gl_Position = gtf_ModelViewProjectionMatrix * gtf_Vertex;
}