Conceptdraw call overhead
Draw Call Overhead
The fixed cost incurred by the CPU for API validation, state changes and command buffer writes each time a draw command is submitted during GPU rendering. When a scene contains a large number of small objects, this cost can far exceed the actual rasterization time.
Timeline (last 90 days)
Oct 16
Each time a draw command is submitted, the CPU must go through API validation, state switching, and command buffer writing, and then the driver translates it for the hardware; when a scene consists of thousands of small objects, these fixed overheads may far exceed the actual rasterization time.
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