Fix the option prevent normal emitters (#718)

Author: aTom3333

chunky/src/java/se/llbit/chunky/renderer/scene/PathTracer.java

@@ -156,7 +156,7 @@ public static boolean pathTrace(Scene scene, Ray ray, WorkerState state, int add
 
             Vector4 indirectEmitterColor = new Vector4(0, 0, 0, 0);
 
-            if (scene.emittersEnabled && (!scene.isPreventNormalEmitterWithSampling() || scene.getEmitterSamplingStrategy() == EmitterSamplingStrategy.NONE) && currentMat.emittance > Ray.EPSILON) {
+            if (scene.emittersEnabled && (!scene.isPreventNormalEmitterWithSampling() || scene.getEmitterSamplingStrategy() == EmitterSamplingStrategy.NONE || ray.depth == 0) && currentMat.emittance > Ray.EPSILON) {
 
               emittance = addEmitted;
               ray.emittance.x = ray.color.x * ray.color.x *

chunky/src/java/se/llbit/chunky/renderer/scene/Scene.java

@@ -415,6 +415,7 @@ public synchronized void copyState(Scene other, boolean copyChunks) {
     emittersEnabled = other.emittersEnabled;
     emitterIntensity = other.emitterIntensity;
     emitterSamplingStrategy = other.emitterSamplingStrategy;
+    preventNormalEmitterWithSampling = other.preventNormalEmitterWithSampling;
     transparentSky = other.transparentSky;
     fogDensity = other.fogDensity;
     skyFogDensity = other.skyFogDensity;