void main(void) { gl_FragColor = vec4(0.0, 0.0, 1.0, 1.0); float yoffset = GROUND_OFFSET - waterHeight; vec3 camera = vec3(cameraLocation.x, max(cameraLocation.y + yoffset, 0.0), cameraLocation.z); vec3 location = vec3(unprojected.x, max(unprojected.y + yoffset, 0.0), unprojected.z); vec3 x = vec3(0.0, Rg + camera.y * WORLD_SCALING, 0.0); vec3 v = normalize(location - camera); vec3 s = normalize(sunDirection * SUN_DISTANCE_SCALED - x); if (v.y == 0.0) { v.y = -0.000001; } float r = length(x); float mu = dot(x, v) / r; float t = length(location - camera) * WORLD_SCALING; vec3 attenuation; vec3 inscattering = _getInscatterColor(x, t, v, s, r, mu, attenuation); gl_FragColor = gl_FragColor * vec4(attenuation, 0.0) + vec4(inscattering, 0.0); gl_FragColor = _toneMappingUncharted(gl_FragColor, 2.0); }