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backend: gl: apply postprocessing to border_color 

Previously postprocessing is omitted when estimating the color of the
border (e.g. dimming, opacity, inversion, etc.), causing the border to
be drawn with the wrong color.

Related: #770

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
This commit is contained in:
Yuxuan Shui 2022-02-13 13:54:25 +00:00
parent e63ec3fd16
commit f8914dda23
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1 changed files with 5 additions and 1 deletions
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6
src/backend/gl/gl_common.c
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@ -1550,16 +1550,20 @@ const char *win_shader_glsl = GLSL(330,
vec4 border_color = texture(tex, vec2(0.0, 0.5));
if (invert_color) {
c = vec4(c.aaa - c.rgb, c.a);
border_color = vec4(border_color.aaa - border_color.rgb, border_color.a);
}
c = vec4(c.rgb * (1.0 - dim), c.a) * opacity;
border_color = vec4(border_color.rgb * (1.0 - dim), border_color.a) * opacity;
vec3 rgb_brightness = texelFetch(brightness, ivec2(0, 0), 0).rgb;
// Ref: https://en.wikipedia.org/wiki/Relative_luminance
float brightness = rgb_brightness.r * 0.21 +
rgb_brightness.g * 0.72 +
rgb_brightness.b * 0.07;
if (brightness > max_brightness)
if (brightness > max_brightness) {
c.rgb = c.rgb * (max_brightness / brightness);
border_color.rgb = border_color.rgb * (max_brightness / brightness);
}
// Rim color is the color of the outer rim of the window, if there is no
// border, it's the color of the window itself, otherwise it's the border.