/usr/share/glmark2/shaders/ideas-logo-shadow.frag is in glmark2-data 2014.03+git20150611.fa71af2d-0ubuntu2.
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 | uniform sampler2D tex;
void main()
{
vec2 curPos = gl_FragCoord.xy / 32.0;
vec4 color = texture2D(tex, curPos);
if (color.w < 0.5)
discard;
gl_FragColor = color;
}
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