Graphics Server

Graphics server is an abstraction that hides low-level graphics API (such as DirectX, OpenGL, Vulkan, etc.) calls under a higher level interface that consists of a number of "building blocks" that allows you to render computer graphics in an easier way.

OpenGL Graphics Server

The default graphics server is the OpenGL-based one (GlGraphicsServer). Why using a deprecated API in the modern world? The answer is simple: OpenGL is wide-spread, runs on pretty much all mainstream platforms (except consoles). Fyrox has a small developers team, which can't maintain a number of different GAPIs for different platforms. Foreseeing the next potential question - why not just use wgpu? The answer is again simple: legacy. Fyrox is a relatively old game engine (compared to the entire Rust ecosystem, of course) and when its development was started, there was no such thing as wgpu. Transition to it nowadays is a challenging task, since the renderer of the engine is quite big. Anyway, the engine is still evolving and more support for other GAPIs will be added in the future.

Custom Graphics Server

It is possible to write a graphics server with pretty much any API, since a graphics server (GraphicsServer trait) has quite a small number of functions. If you're familiar with other GAPIs, then it should be relatively straightforward for you to implement your own server.

Usage

Typical use of the graphics server is shown extensively in the render pass section.