// vec3 object_color = (diffuse.xyz * cdiff * texel.xyz + specular.xyz * cspec) * itexel.xyz;
vec3 object_color = s.diffuse.xyz * texel.xyz * itexel.xyz;
// vec3 object_color = (diffuse.xyz * cdiff * texel.xyz + specular.xyz * cspec) * itexel.xyz;
vec3 object_color = s.diffuse.xyz * texel.xyz * itexel.xyz;