Computing system and methods of operating the computing system

A computing system comprising:

• a system bus;
• a system memory coupled to the system bus;
• a frame buffer included in the system memory;
• a graphics processing unit (GPU) coupled to the system bus;
• and
• a central processing unit (CPU) coupled to the system bus, wherein the CPU includes a GPU driver configured to manage a plurality of commands associated with a plurality of rendering targets included in the frame buffer, wherein the plurality of commands are generated by an application program,
• wherein the GPU driver includes:
• a command buffer configured to store the plurality of commands;
• and
• a command manager configured to:
• set at least one unused rendering target among the plurality of rendering targets to a delayed submission mode based on instructions included in the plurality of the commands;
• and
• selectively delete a command of the plurality of commands associated with the at least one unused rendering target set to the delayed submission mode from the command buffer when the command includes an instruction to invalidate a rendering result associated with the at least one unused rendering target set to the delayed submission mode.

A method of operating a computing system, the method comprising:

• receiving, by a GPU driver included in a CPU of the computing system, a plurality of commands associated with a plurality of rendering targets included in a frame buffer of the computing system;
• storing the plurality of commands in a command buffer included in the GPU driver;
• setting, by a command manager in the GPU driver, at least one unused rendering target among the plurality of rendering targets to a delayed submission mode;
• deleting, by the command manager, a first command of the plurality of commands associated with the at least one unused rendering target from the command buffer in response to the first command including an instruction to invalidate a first rendering result associated with the at least one unused rendering target set to the delayed submission mode;
• and
• providing, by the command manager, a second command of the plurality of commands to a GPU included in the computing system in response to the second command not including an instruction to invalidate a second rendering result associated with the at least one unused rendering target set to the delayed submission mode.