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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;
float floor_ref(float x)
{
if(x >= 0.0)
x = float(int(x));
else
x = float(int(x) - 1);
return x;
}
void main (void)
{
float c = 10.0 * 2.0 * (gtf_Color.r - 0.5);
color = vec4((floor_ref(c) + 10.0) / 20.0, 0.0, 0.0, 1.0);
gl_Position = gtf_ModelViewProjectionMatrix * gtf_Vertex;
}
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