Using SDL3 and BGFX

gistfile1.txt

/*
 * Basic SDL3 and BGFX initialization 
 * 
 * By: Shogunate
 * Date: July 8th, 2024
 * Email: [email protected]
 */

#include <windows.h>
#include <SDL3/SDL.h>
#include <SDL3/SDL_main.h>
#include <bgfx/bgfx.h>
#include <bgfx/platform.h>


void BgfxInit( void* nwh, void* ndt )
{
	bgfx::Init init;
	init.type = bgfx::RendererType::OpenGL;
	init.vendorId = BGFX_PCI_ID_NONE;
	init.platformData.nwh = nwh;
	init.platformData.ndt = ndt;
	init.resolution.width = 1280;
	init.resolution.height = 720;
	//init.resolution.reset = BGFX_RESET_VSYNC;
	if( !bgfx::init( init ) )
		__debugbreak();

	//bgfx::reset( 1280, 720, BGFX_RESET_VSYNC );
	bgfx::setDebug( BGFX_DEBUG_TEXT );
	bgfx::setViewClear( 0, BGFX_CLEAR_COLOR | BGFX_CLEAR_DEPTH, 0x303030FF, 1.0f, 0 );
}

int counter = 0;


inline bool sdlSetWindow( SDL_Window* window )
{
	bgfx::PlatformData pd;

#if defined(SDL_PLATFORM_WIN32)
    pd.nwh = (HWND) SDL_GetProperty( SDL_GetWindowProperties( window ), SDL_PROP_WINDOW_WIN32_HWND_POINTER, NULL );
    pd.ndt = NULL;
#elif defined(SDL_PLATFORM_MACOS)
    pd.nwh = (__bridge NSWindow *) SDL_GetProperty( SDL_GetWindowProperties( window ), SDL_PROP_WINDOW_COCOA_WINDOW_POINTER, NULL );
    pd.ndt = NULL;
#elif defined(SDL_PLATFORM_LINUX)
    if( SDL_strcmp( SDL_GetCurrentVideoDriver(), "x11" ) == 0 ) 
    {
        pd.ndt = (Display *) SDL_GetProperty( SDL_GetWindowProperties( window ), SDL_PROP_WINDOW_X11_DISPLAY_POINTER, NULL );
        pd.nwh = (Window) SDL_GetNumberProperty( SDL_GetWindowProperties( window  ), SDL_PROP_WINDOW_X11_WINDOW_NUMBER, 0 );
    } 
    else if( SDL_strcmp( SDL_GetCurrentVideoDriver(), "wayland" ) == 0 ) 
    {
        /*struct wl_display *display*/ pd.ndt = (struct wl_display *) SDL_GetProperty( SDL_GetWindowProperties( window ), SDL_PROP_WINDOW_WAYLAND_DISPLAY_POINTER, NULL );
        /*struct wl_surface *surface*/ pd.nwh = (struct wl_surface *) SDL_GetProperty( SDL_GetWindowProperties( window ), SDL_PROP_WINDOW_WAYLAND_SURFACE_POINTER, NULL );
    }
#endif

	pd.context = NULL;
	pd.backBuffer = NULL;
	pd.backBufferDS = NULL;
	bgfx::setPlatformData(pd);

	BgfxInit( pd.nwh, pd.ndt );

	return true;
}

int SDL_main(int argc, char *argv[])
{
	SDL_Init(0);

	SDL_Window* window = SDL_CreateWindow( "Bgfx SDL3", 1280, 720, 0 );

	sdlSetWindow( window );

	bool exit = false;
	SDL_Event event;
	while( !exit )
	{
		bgfx::setViewRect( 0, 0, 0, uint16_t(1280), uint16_t(720) );
		bgfx::touch(0);
		bgfx::dbgTextClear();
		bgfx::dbgTextPrintf( 0, 1, 0x4f, "Counter: %d", counter++ );
		bgfx::frame();

		while( SDL_PollEvent( &event ) )
		{
			switch( event.type )
			{
			case SDL_EVENT_QUIT:
			case SDL_EVENT_WINDOW_CLOSE_REQUESTED:
				exit = true;
				break;
			}
		}
	}

	bgfx::shutdown();

	SDL_DestroyWindow( window );
	SDL_Quit();

	return 0;
}