Cycles: Fix missing camera-in-volume update when using certain render layers configurations

intern/cycles/render/camera.cpp

@@ -80,6 +80,7 @@ Camera::Camera()
 
 	need_update = true;
 	need_device_update = true;
+	need_flags_update = true;
 	previous_need_motion = -1;
 }
 
@@ -171,6 +172,7 @@ void Camera::update()
 
 	need_update = false;
 	need_device_update = true;
+	need_flags_update = true;
 }
 
 void Camera::device_update(Device *device, DeviceScene *dscene, Scene *scene)
@@ -288,7 +290,7 @@ void Camera::device_update_volume(Device * /*device*/,
                                   DeviceScene *dscene,
                                   Scene *scene)
 {
-	if(!need_device_update) {
+	if(!need_device_update && !need_flags_update) {
 		return;
 	}
 	KernelCamera *kcam = &dscene->data.cam;
@@ -304,6 +306,7 @@ void Camera::device_update_volume(Device * /*device*/,
 		}
 	}
 	need_device_update = false;
+	need_flags_update = false;
 }
 
 void Camera::device_free(Device * /*device*/, DeviceScene * /*dscene*/)

intern/cycles/render/camera.h

@@ -105,6 +105,7 @@ public:
 	/* update */
 	bool need_update;
 	bool need_device_update;
+	bool need_flags_update;
 	int previous_need_motion;
 
 	/* functions */

intern/cycles/render/object.cpp

@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include "camera.h"
 #include "device.h"
 #include "light.h"
 #include "mesh.h"
@@ -192,6 +193,7 @@ void Object::tag_update(Scene *scene)
 		}
 	}
 
+	scene->camera->need_flags_update = true;
 	scene->curve_system_manager->need_update = true;
 	scene->mesh_manager->need_update = true;
 	scene->object_manager->need_update = true;

intern/cycles/render/shader.cpp

@@ -15,6 +15,7 @@
  */
 
 #include "background.h"
+#include "camera.h"
 #include "device.h"
 #include "graph.h"
 #include "light.h"