| // 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/#blendingcolorburn |
| vec3 color = 1 - min(vec3(1), (1 - dst) / src); |
| if (1 - dst.r < kEhCloseEnough) { |
| color.r = 1; |
| } |
| if (1 - dst.g < kEhCloseEnough) { |
| color.g = 1; |
| } |
| if (1 - dst.b < kEhCloseEnough) { |
| color.b = 1; |
| } |
| if (src.r < kEhCloseEnough) { |
| color.r = 0; |
| } |
| if (src.g < kEhCloseEnough) { |
| color.g = 0; |
| } |
| if (src.b < kEhCloseEnough) { |
| color.b = 0; |
| } |
| return color; |
| } |
| |
| #include "advanced_blend.glsl" |
