" vec4 vsurface = water_surf( halfview, surfnorm, depthvalue );\n"
" vsurface.a -= fdist;\n"
" oColour = mix( vsurface, vec4(1.0,1.0,1.0,0.5), fband );\n"
" vec4 vsurface = water_surf( halfview, surfnorm, depthvalue );\n"
" vsurface.a -= fdist;\n"
" oColour = mix( vsurface, vec4(1.0,1.0,1.0,0.5), fband );\n"