| // 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. | |
| #ifndef CONSTANTS_GLSL_ | |
| #define CONSTANTS_GLSL_ | |
| const float kEhCloseEnough = 0.000001; | |
| // 1 / (2 * pi) | |
| const float k1Over2Pi = 0.1591549430918; | |
| // sqrt(2 * pi) | |
| const float kSqrtTwoPi = 2.50662827463; | |
| #endif |