export default /* glsl */`
float getShadowMask() {
float shadow = 1.0;
#ifdef USE_SHADOWMAP
#if NUM_DIR_LIGHT_SHADOWS > 0
DirectionalLightShadow directionalLight;
#pragma unroll_loop_start
for ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {
directionalLight = directionalLightShadows[ i ];
shadow *= receiveShadow ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;
}
#pragma unroll_loop_end
#endif
#if NUM_SPOT_LIGHT_SHADOWS > 0
SpotLightShadow spotLight;
#pragma unroll_loop_start
for ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {
spotLight = spotLightShadows[ i ];
shadow *= receiveShadow ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;
}
#pragma unroll_loop_end
#endif
#if NUM_POINT_LIGHT_SHADOWS > 0
PointLightShadow pointLight;
#pragma unroll_loop_start
for ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {
pointLight = pointLightShadows[ i ];
shadow *= receiveShadow ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;
}
#pragma unroll_loop_end
#endif
/*
#if NUM_RECT_AREA_LIGHTS > 0
// TODO (abelnation): update shadow for Area light
#endif
*/
#endif
return shadow;
}
`;