What does RHI mean in HARDWARE

RHI stands for Render Hardware Interface. It is a software abstraction layer that serves as the interface between graphical application or games and the graphics driver of a computer's operating system.

RHI helps developers write code for their applications, making it easier to develop 3D applications and games. It also helps with performance optimization, reducing power consumption and improving compatibility with different hardware platforms.

RHI works by providing an abstracted platform-agnostic interface between the application code and the underlying hardware GPU driver which handles rendering operations on behalf of the application.

Examples include dynamic resolution scaling, post-processing effects, deferred shading techniques, virtual texturing, tile-based rendering techniques, stored framebuffers, etc. In addition to this, it can also be used to optimize memory usage in order to improve performance on resource constrained devices such as mobile phones and tablets.

Yes, all mainstream operating systems have their own implementations of RHI in order to provide compatibility with existing hardware drivers from different manufacturers. The main purpose of these implementations is to make sure that developers don't need to worry about writing custom drivers for each type of device or platform they target with their 3D applications or games.