| #version 320 es |
| |
| // 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 highp float; |
| |
| layout(location = 0) out vec4 fragColor; |
| |
| layout(location = 0) uniform float a; |
| |
| void main() { |
| fragColor = vec4( |
| // distance between same value is 0.0 |
| distance(a * 7.0, 7.0), |
| // 7.0 - 6.0 = 1.0 |
| distance(a * 7.0, 6.0), 0.0, |
| // sqrt(7.0 * 7.0 - 6.0 * 8.0) = sqrt(49.0 - 48.0) = sqrt(1.0) = 1.0 |
| distance(vec2(a * 7.0, 6.0), vec2(7.0, 8.0))); |
| } |
