glGetShaderInfoLog(object, BCTEXTLEN, &len, string);
if(len > 0) printf("Playback3D::print_error:\n%s\n%s\n", source, string);
if(len > 0) return 1;
glGetShaderInfoLog(object, BCTEXTLEN, &len, string);
if(len > 0) printf("Playback3D::print_error:\n%s\n%s\n", source, string);
if(len > 0) return 1;