| // Copyright 2016 Joe Wilm, The Alacritty Project Contributors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| #version 330 core |
| in vec2 TexCoords; |
| in vec3 fg; |
| in vec4 bg; |
| flat in float vb; |
| flat in int background; |
| |
| layout(location = 0, index = 0) out vec4 color; |
| layout(location = 0, index = 1) out vec4 alphaMask; |
| |
| uniform float bgOpacity; |
| uniform sampler2D mask; |
| |
| void main() |
| { |
| if (background != 0) { |
| if (bg.a == 0.0) |
| discard; |
| |
| alphaMask = vec4(1.0); |
| color = vec4(bg.rgb + vb, 1.0); |
| } else { |
| vec3 textColor = texture(mask, TexCoords).rgb; |
| alphaMask = vec4(textColor, textColor.r); |
| color = vec4(fg, 1.0); |
| } |
| } |