The shader currently forces GLSL 1.0 to avoid being incompatible with older hardware but is still using features not available in 1.0.
Strict compilers fail to compile the shader:
error C7506: OpenGL/ES does not define the global variable gl_TexCoord
As every hardware/driver that supports 1.0 also supports 1.10 bumping the version to fix it is safe.
https://bugzilla.gnome.org/show_bug.cgi?id=629343
-#version 100
+#version 110
uniform sampler2D sampler0;
uniform float fraction;
uniform float height;