| // 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. |
| |
| #include "advanced_blend_utils.glsl" |
| |
| vec3 Blend(vec3 dst, vec3 src) { |
| // https://www.w3.org/TR/compositing-1/#blendingsoftlight |
| |
| vec3 D = IPVec3ChooseCutoff(((16 * dst - 12) * dst + 4) * dst, // |
| sqrt(dst), // |
| dst, // |
| 0.25); |
| |
| return IPVec3Choose(dst - (1 - 2 * src) * dst * (1 - dst), // |
| dst + (2 * src - 1) * (D - dst), // |
| src); |
| } |
| |
| #include "advanced_blend.glsl" |
