/usr/share/kwin/shaders/1.40/logout-blur.frag is in kwin-data 4:5.5.5-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | #version 140
uniform sampler2D sampler;
uniform float u_alphaProgress;
in vec2 varyingTexCoords;
out vec4 fragColor;
void main() {
vec4 texel = texture(sampler, varyingTexCoords, 1.75);
texel.a = u_alphaProgress;
fragColor = texel;
}
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