public string BackendToString(VideoBackend backend)
{
switch (backend)
{
case VideoBackend.Direct3D:
return("direct3d");
case VideoBackend.OpenGL:
return("opengl");
case VideoBackend.OpenGL_ES:
return("opengles");
case VideoBackend.OpenGL_ES2:
return("opengles2");
case VideoBackend.Metal:
return("metal");
case VideoBackend.Software:
return("software");
case VideoBackend.Auto:
return("auto");
default:
return("n/a");
}
}
public void SetVideoBackend(VideoBackend backend)
{
if (_init)
{
throw new EngineException("Graphics module already initialized, cannot change video backend.", "GraphicsEngine.SetVideoBackend()");
}
switch (backend)
{
case VideoBackend.Direct3D:
SDL_SetHint(SDL_HINT_RENDER_DRIVER, "direct3d");
break;
case VideoBackend.OpenGL:
SDL_SetHint(SDL_HINT_RENDER_DRIVER, "opengl");
SDL_GL_SetAttribute(SDL_GLattr.SDL_GL_DEPTH_SIZE, 32);
break;
case VideoBackend.OpenGL_ES:
SDL_SetHint(SDL_HINT_RENDER_DRIVER, "opengles");
break;
case VideoBackend.OpenGL_ES2:
SDL_SetHint(SDL_HINT_RENDER_DRIVER, "opengles2");
break;
case VideoBackend.Metal:
SDL_SetHint(SDL_HINT_RENDER_DRIVER, "metal");
break;
case VideoBackend.Software:
SDL_SetHint(SDL_HINT_RENDER_DRIVER, "software");
break;
}
_backend = backend;
}
public string BackendToString(VideoBackend backend)
{
return(backend switch
{
VideoBackend.Direct3D => "direct3d",
VideoBackend.OpenGL => "opengl",
VideoBackend.OpenGL_ES => "opengles",
VideoBackend.OpenGL_ES2 => "opengles2",
VideoBackend.Metal => "metal",
VideoBackend.Software => "software",
VideoBackend.Auto => "auto",
_ => "n/a",
});
public bool IsRenderDriverAvailable(VideoBackend backend)
{
if (backend == VideoBackend.Auto)
{
return(true);
}
string[] drivers = GetAvailableRenderDrivers();
for (int i = 0; i < drivers.Length; ++i)
{
if (drivers[i] == BackendToString(backend))
{
return(true);
}
}
return(false);
}
public GameEngine(EngineMode mode = EngineMode.Synchronous, VideoBackend backend = VideoBackend.Auto)
{
ResourcesLoaded = false;
Properties = new EngineProperties();
_resource = new ResourceManager(IntPtr.Zero); //I don't know if this would work.
_audio = new AudioEngine(_resource);
if (!IsRenderDriverAvailable(backend))
{
Debug.Log("GameEngine.GameEngine()", $"Render Driver '{BackendToString(backend)}' is not available. Switched to software fallback.");
backend = VideoBackend.Software;
}
_graphics = new GraphicsEngine(backend);
_input = new InputManager();
_scenes = new SceneManager();
_vBackend = backend;
_input.WindowEvent += InputHandler_WindowEvent;
_input.EngineEvent += _input_EngineEvent;
}
public GameEngine(EngineMode mode = EngineMode.Synchronous, VideoBackend backend = VideoBackend.Auto)
{
SDL_SetHint(SDL_HINT_WINDOWS_DISABLE_THREAD_NAMING, "1");
// 48px = 1 meter
ConvertUnits.SetDisplayUnitToSimUnitRatio(48f);
ResourcesLoaded = false;
Properties = new EngineProperties();
_resource = new ResourceManager();
_audio = new AudioEngine(_resource);
if (!IsRenderDriverAvailable(backend))
{
Debug.Log("GameEngine.GameEngine()", $"Render Driver '{BackendToString(backend)}' is not available. Switched to software fallback.");
backend = VideoBackend.Software;
}
_graphics = new GraphicsEngine(backend);
_input = new InputManager();
_scenes = new SceneManager();
_vBackend = backend;
_input.WindowEvent += InputHandler_WindowEvent;
_input.EngineEvent += _input_EngineEvent;
}
public GraphicsEngine(VideoBackend backend)
{
SetVideoBackend(backend);
RenderClearColor = new ColorRGBA(140, 180, 200);
BorderColor = new ColorRGBA(0, 40, 200);
}
