The above result is what i have achieved with the Arnold Render in Maya. Although the overall quality of the image is poor, the filament in the light
bulb successfully lights up the objects in the environment.
The second image is what i get with Radeon-Pro in Maya with the emission power of the light set to 2000Watt per sqm which is already a absurd
value. obviously, the filament fails to illuminate the surroundings. And further increasing the power doesn't seem to help the situation(Trust me, I
even tried 20000000Watt per sqm to compensate the small surface area of the filament!).
the 'Light Bulb 3.jpg' attached to this message shows the result by applying the same emissive material to the glass shell instead of the filament
(with emission power set to only 200W per sqm). One can see that the surroundings are well illuminated, but it is not the effect i want! So i wonder if have missed any
configurations in the case of the filament or it is just a built in limitation of the current Radeon ProRender.