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/*
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_Color;
attribute vec4 gtf_Vertex;
uniform mat4 gtf_ModelViewProjectionMatrix;
varying vec4 color;
bvec2 lte(in ivec2 a, in ivec2 b)
{
bvec2 result;
if(a[0] <= b[0]) result[0] = true;
else result[0] = false;
if(a[1] <= b[1]) result[1] = true;
else result[1] = false;
return result;
}
void main (void)
{
vec2 c = floor(10.0 * gtf_Color.rg - 4.5); // round to the nearest integer
vec2 result = vec2(lte(ivec2(c), ivec2(0)));
color = vec4(result, 0.0, 1.0);
gl_Position = gtf_ModelViewProjectionMatrix * gtf_Vertex;
}
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