| #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; | |
| // 0.0 is returned if x (second param) < edge (first param), and 1.0 is returned otherwise. | |
| void main() { | |
| fragColor = vec4( | |
| 0.0, | |
| step(0.5, a), | |
| 0.0, | |
| 1.0 | |
| ); | |
| } |