fixes #3773

src/renderers/WebGLRenderer.js

@@ -4247,7 +4247,7 @@ THREE.WebGLRenderer = function ( parameters ) {
 			maxHemiLights: maxLightCount.hemi,
 
 			maxShadows: maxShadows,
-			shadowMapEnabled: this.shadowMapEnabled && object.receiveShadow,
+			shadowMapEnabled: this.shadowMapEnabled && object.receiveShadow && maxShadows > 0,
 			shadowMapType: this.shadowMapType,
 			shadowMapDebug: this.shadowMapDebug,
 			shadowMapCascade: this.shadowMapCascade,