/usr/lib/libreoffice/program/opengl/ is in libreoffice-common 1:5.1.2-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/libreoffice/program/opengl/areaHashCRC64TFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/areaScaleFastFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/areaScaleFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/backgroundFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/backgroundVertexShader.glsl
/usr/lib/libreoffice/program/opengl/blendedTextureFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/blendedTextureVertexShader.glsl
/usr/lib/libreoffice/program/opengl/commonFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/commonVertexShader.glsl
/usr/lib/libreoffice/program/opengl/convolutionFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/debugFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/debugVertexShader.glsl
/usr/lib/libreoffice/program/opengl/diffTextureFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/dumbVertexShader.glsl
/usr/lib/libreoffice/program/opengl/dummyVertexShader.glsl
/usr/lib/libreoffice/program/opengl/greyscaleFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/invert50FragmentShader.glsl
/usr/lib/libreoffice/program/opengl/lineFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/lineVertexShader.glsl
/usr/lib/libreoffice/program/opengl/linearGradientFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/linearMultiColorGradientFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/linearTwoColorGradientFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/maskFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/maskedTextureFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/maskedTextureVertexShader.glsl
/usr/lib/libreoffice/program/opengl/pickingFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/pickingVertexShader.glsl
/usr/lib/libreoffice/program/opengl/radialGradientFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/radialMultiColorGradientFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/radialTwoColorGradientFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/rectangularMultiColorGradientFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/rectangularTwoColorGradientFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/renderTextureFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/renderTextureVertexShader.glsl
/usr/lib/libreoffice/program/opengl/replaceColorFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/screenTextFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/screenTextVertexShader.glsl
/usr/lib/libreoffice/program/opengl/shape3DFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/shape3DFragmentShaderBatch.glsl
/usr/lib/libreoffice/program/opengl/shape3DFragmentShaderBatchScroll.glsl
/usr/lib/libreoffice/program/opengl/shape3DFragmentShaderV300.glsl
/usr/lib/libreoffice/program/opengl/shape3DVertexShader.glsl
/usr/lib/libreoffice/program/opengl/shape3DVertexShaderBatch.glsl
/usr/lib/libreoffice/program/opengl/shape3DVertexShaderBatchScroll.glsl
/usr/lib/libreoffice/program/opengl/shape3DVertexShaderV300.glsl
/usr/lib/libreoffice/program/opengl/solidFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/symbolFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/symbolVertexShader.glsl
/usr/lib/libreoffice/program/opengl/textFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/textFragmentShaderBatch.glsl
/usr/lib/libreoffice/program/opengl/textVertexShader.glsl
/usr/lib/libreoffice/program/opengl/textVertexShaderBatch.glsl
/usr/lib/libreoffice/program/opengl/textureFragmentShader.glsl
/usr/lib/libreoffice/program/opengl/textureVertexShader.glsl
/usr/lib/libreoffice/program/opengl/transformedTextureVertexShader.glsl