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Learning Vulkan by Parminder Singh

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Understanding physical and logical devices

Vulkan divides the representation of a device into two forms known as the logical and physical device:

  • Physical device: A physical device represents a single workforce that may comprise a single GPU along with other hardware parts that work together to help the system accomplish the submitted jobs. On a very simple system, a physical device can be considered to represent the physical GPU unit.
  • Logical device: A logical device represents the application view of the actual device.

Physical devices

OpenGL does not expose physical devices; it connects them behind the curtains. Vulkan, on the other hand, exposes the system real computing device or GPU to the application. It allows the application to enumerate ...

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