The LightProbe is now treated apart from other lights in the rendering pass as the Ambient light is and is always rendered on the first pass if there are several passes.

jme3-core/src/main/java/com/jme3/material/Material.java

@@ -704,8 +704,9 @@ public class Material implements CloneableSmartAsset, Cloneable, Savable {
         setParam(name, VarType.Vector4, value);
     }
 
-    private ColorRGBA getAmbientColor(LightList lightList, boolean removeLights) {
+    private LightProbe extractIndirectLights(LightList lightList, boolean removeLights) {
         ambientLightColor.set(0, 0, 0, 1);
+        LightProbe probe = null;
         for (int j = 0; j < lightList.size(); j++) {
             Light l = lightList.get(j);
             if (l instanceof AmbientLight) {
@@ -714,9 +715,15 @@ public class Material implements CloneableSmartAsset, Cloneable, Savable {
                     lightList.remove(l);
                 }
             }
+            if (l instanceof LightProbe) {
+                probe = (LightProbe)l;                
+                if(removeLights){
+                    lightList.remove(l);
+                }
+            }
         }
         ambientLightColor.a = 1.0f;
-        return ambientLightColor;
+        return probe;
     }
 
     private static void renderMeshFromGeometry(Renderer renderer, Geometry geom) {
@@ -764,13 +771,32 @@ public class Material implements CloneableSmartAsset, Cloneable, Savable {
         Uniform lightProbeIrrMap = shader.getUniform("g_IrradianceMap");
         Uniform lightProbePemMap = shader.getUniform("g_PrefEnvMap");
         
-        
+        LightProbe lightProbe = null;
         if (startIndex != 0) {
             // apply additive blending for 2nd and future passes
             rm.getRenderer().applyRenderState(additiveLight);
             ambientColor.setValue(VarType.Vector4, ColorRGBA.Black);
         }else{
-            ambientColor.setValue(VarType.Vector4, getAmbientColor(lightList,true));
+            lightProbe = extractIndirectLights(lightList,true);
+            ambientColor.setValue(VarType.Vector4, ambientLightColor);
+        }
+        
+        //If there is a lightProbe in the list we force it's render on the first pass
+        if(lightProbe != null){
+            BoundingSphere s = (BoundingSphere)lightProbe.getBounds();                        
+            lightProbeData.setVector4InArray(lightProbe.getPosition().x, lightProbe.getPosition().y, lightProbe.getPosition().z, 1f/s.getRadius(), 0);
+            //assigning new texture indexes if they have never been assigned.
+            if( irrUnit == -1 ){
+                irrUnit = nextTexUnit++;
+                pemUnit = nextTexUnit++;
+            }
+            rm.getRenderer().setTexture(irrUnit, lightProbe.getIrradianceMap());
+            lightProbeIrrMap.setValue(VarType.Int, irrUnit);                        
+            rm.getRenderer().setTexture(pemUnit, lightProbe.getPrefilteredEnvMap());
+            lightProbePemMap.setValue(VarType.Int, pemUnit);
+        } else {
+            //Disable IBL for this pass
+            lightProbeData.setVector4InArray(0,0,0,-1, 0);
         }
 
         int lightDataIndex = 0;
@@ -841,34 +867,13 @@ public class Material implements CloneableSmartAsset, Cloneable, Savable {
                         transposeLightDataToSpace(technique.getDef().getLightSpace(), rm, tmpVec);                        
                         lightData.setVector4InArray(tmpVec.getX(), tmpVec.getY(), tmpVec.getZ(), spotAngleCos, lightDataIndex);
                         lightDataIndex++;
-                        break;
+                        break;                   
-                    case Probe:
-                        useIBL = true;
-                        endIndex++;
-                        LightProbe probe = (LightProbe)l;
-                        BoundingSphere s = (BoundingSphere)probe.getBounds();                        
-                        lightProbeData.setVector4InArray(probe.getPosition().x, probe.getPosition().y, probe.getPosition().z, 1f/s.getRadius(), 0);
-                        
-                        //assigning new texture indexes if they have never been assigned.
-                        if( irrUnit == -1 ){
-                            irrUnit = nextTexUnit++;
-                            pemUnit = nextTexUnit++;
-                        }
-                        rm.getRenderer().setTexture(irrUnit, probe.getIrradianceMap());
-                        lightProbeIrrMap.setValue(VarType.Int, irrUnit);                        
-                        rm.getRenderer().setTexture(pemUnit, probe.getPrefilteredEnvMap());
-                        lightProbePemMap.setValue(VarType.Int, pemUnit);
-                        break;
                     default:
                         throw new UnsupportedOperationException("Unknown type of light: " + l.getType());
                 }
         }
         vars.release();
-        
+
-        if(!useIBL ){            
-            //Disable IBL for this pass
-            lightProbeData.setVector4InArray(0,0,0,-1, 0);
-        }
         //Padding of unsued buffer space
         while(lightDataIndex < numLights * 3) {
             lightData.setVector4InArray(0f, 0f, 0f, 0f, lightDataIndex);
@@ -889,13 +894,14 @@ public class Material implements CloneableSmartAsset, Cloneable, Savable {
 
         for (int i = 0; i < lightList.size(); i++) {
             Light l = lightList.get(i);
-            if (l instanceof AmbientLight) {
+            if (l instanceof AmbientLight || l instanceof LightProbe ) {
                 continue;
             }
 
             if (isFirstLight) {
                 // set ambient color for first light only
-                ambientColor.setValue(VarType.Vector4, getAmbientColor(lightList, false));
+                extractIndirectLights(lightList, false);
+                ambientColor.setValue(VarType.Vector4, ambientLightColor);
                 isFirstLight = false;
                 isSecondLight = true;
             } else if (isSecondLight) {
@@ -967,7 +973,7 @@ public class Material implements CloneableSmartAsset, Cloneable, Savable {
 
                     lightDir.setValue(VarType.Vector4, tmpLightDirection);
 
-                    break;
+                    break;                
                 default:
                     throw new UnsupportedOperationException("Unknown type of light: " + l.getType());
             }
@@ -979,7 +985,8 @@ public class Material implements CloneableSmartAsset, Cloneable, Savable {
         if (isFirstLight) {
             // Either there are no lights at all, or only ambient lights.
             // Render a dummy "normal light" so we can see the ambient color.
-            ambientColor.setValue(VarType.Vector4, getAmbientColor(lightList, false));
+            extractIndirectLights(lightList, false);
+            ambientColor.setValue(VarType.Vector4, ambientLightColor);
             lightColor.setValue(VarType.Vector4, ColorRGBA.BlackNoAlpha);
             lightPos.setValue(VarType.Vector4, nullDirLight);
             r.setShader(shader);