Add option to apply opacity to all background colors

In some cases it could be desired to apply 'background_opacity'
to all background colors instead of just 'colors.primary.background',
thus adding an 'colors.opaque_background_colors' option to control that.

Fixes #741.

2 files changed, 2 insertions, 2 deletions

diff --git a/alacritty/res/text.f.glsl b/alacritty/res/text.f.glsl
index d5e26881..5b4e3da6 100644
--- a/alacritty/res/text.f.glsl
+++ b/alacritty/res/text.f.glsl
@@ -18,7 +18,7 @@ void main() {
         }
 
         alphaMask = vec4(1.0);
-        color = vec4(bg.rgb, 1.0);
+        color = vec4(bg.rgb, bg.a);
     } else if ((int(fg.a) & COLORED) != 0) {
         // Color glyphs, like emojis.
         vec4 glyphColor = texture(mask, TexCoords);
diff --git a/alacritty/res/text.v.glsl b/alacritty/res/text.v.glsl
index 31e6f934..a4a31382 100644
--- a/alacritty/res/text.v.glsl
+++ b/alacritty/res/text.v.glsl
@@ -65,6 +65,6 @@ void main() {
         TexCoords = uvOffset + position * uvSize;
     }
 
-    bg = vec4(backgroundColor.rgb / 255.0, backgroundColor.a);
+    bg = backgroundColor / 255.0;
     fg = vec4(textColor.rgb / 255.0, textColor.a);
 }