WoW:GxApi: Difference between revisions

Revision as of 19:39, 12 June 2025

GxApi is a cross-platform graphics API that is part of the World of Warcraft engine. It:

Creates/destroys the window in which the game runs, which starts the game being able to read input events

Loads/unloads texture and geometry data

Creates/destroys textures

Draws to the window.

Graphics device

GxApi supports multiple low-level graphics APIs such as OpenGL and Direct3D (DirectX) 9. It does this by wrapping an base interface class, CGxDevice, whose virtual member functions handle the actual calls to the graphics driver.

Windows device

On Windows, the derived classes include:


CGxDeviceOpenGl: OpenGL implementation. Enabled by passing -opengl as a launch parameter, or setting a CVar: SET gxApi "OpenGL"
CGxDeviceD3d: Direct3D 9 (DirectX) implementation.
CGxDeviceD3d9Ex: Direct3D 9Ex (DirectX) implementation

@@ Line 9: / Line 9: @@
 * Draws to the window.
-== Devices ==
+== Graphics device ==
 GxApi supports multiple low-level graphics APIs such as OpenGL and Direct3D (DirectX) 9. It does this by wrapping an base interface class, <code>CGxDevice</code>, whose
 virtual member functions handle the actual calls to the graphics driver.
+=== Windows device ===
 On Windows, the derived classes include:
 ;
-; <code>CGxDeviceOpenGl</code> : OpenGL implementation.
+; <code>CGxDeviceOpenGl</code> : OpenGL implementation. Enabled by passing <code>-opengl</code> as a launch parameter, or setting a CVar: <code>SET gxApi "OpenGL"</code>
 ; <code>CGxDeviceD3d</code> : Direct3D 9 (DirectX) implementation.
 ; <code>CGxDeviceD3d9Ex</code> : Direct3D 9Ex (DirectX) implementation