// Copyright 2013 The Flutter Authors. All rights reserved. | |
// Use of this source code is governed by a BSD-style license that can be | |
// found in the LICENSE file. | |
precision mediump float; | |
uniform FragInfo { | |
vec4 color; | |
float square_size; | |
} | |
frag_info; | |
out vec4 frag_color; | |
void main() { | |
vec2 square = floor(gl_FragCoord.xy / frag_info.square_size); | |
frag_color = mod(square.x + square.y, 2.0) * frag_info.color; | |
} |