Vram Doctor was designed originally as a small debugging vram data tool directly within GameMaker, to allow one to know how much vram is being taken up by their projects resources.

• Automatic addition and removal of on the fly sprites, fonts, vertex buffers and surfaces.
• Very accurate estimations of texture page vram allocation.
• Automatic application_surface tracking.
• Texture group export awareness.
• Ability to adjust or completely shut off Vram Doctor automatic tick system.

Visit the documentation here!