dashboard/tests/test_sdl2_installed.cpp

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2021-08-23 18:39:09 +00:00
#include <SDL.h>
#include <iostream>
#include <vector>
int main( int argc, char** argv )
{
SDL_Init( 0 );
std::cout << "Testing video drivers..." << '\n';
std::vector< bool > drivers( SDL_GetNumVideoDrivers() );
for( int i = 0; i < drivers.size(); ++i )
{
drivers[ i ] = ( 0 == SDL_VideoInit( SDL_GetVideoDriver( i ) ) );
SDL_VideoQuit();
}
std::cout << "SDL_VIDEODRIVER available:";
for( int i = 0; i < drivers.size(); ++i )
{
std::cout << " " << SDL_GetVideoDriver( i );
}
std::cout << '\n';
std::cout << "SDL_VIDEODRIVER usable :";
for( int i = 0; i < drivers.size(); ++i )
{
if( !drivers[ i ] ) continue;
std::cout << " " << SDL_GetVideoDriver( i );
}
std::cout << '\n';
if( SDL_Init( SDL_INIT_VIDEO ) < 0 )
{
std::cerr << "SDL_Init(): " << SDL_GetError() << '\n';
return EXIT_FAILURE;
}
std::cout << "SDL_VIDEODRIVER selected : " << SDL_GetCurrentVideoDriver() << '\n';
SDL_Window* window = SDL_CreateWindow
(
"SDL2",
SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
640, 480,
SDL_WINDOW_SHOWN
);
if( nullptr == window )
{
std::cerr << "SDL_CreateWindow(): " << SDL_GetError() << '\n';
return EXIT_FAILURE;
}
std::cout << "SDL_RENDER_DRIVER available:";
for( int i = 0; i < SDL_GetNumRenderDrivers(); ++i )
{
SDL_RendererInfo info;
SDL_GetRenderDriverInfo( i, &info );
std::cout << " " << info.name;
}
std::cout << '\n';
SDL_Renderer* renderer = SDL_CreateRenderer( window, -1, SDL_RENDERER_ACCELERATED );
if( nullptr == renderer )
{
std::cerr << "SDL_CreateRenderer(): " << SDL_GetError() << '\n';
return EXIT_FAILURE;
}
SDL_RendererInfo info;
SDL_GetRendererInfo( renderer, &info );
std::cout << "SDL_RENDER_DRIVER selected : " << info.name << '\n';
bool running = true;
unsigned char i = 0;
while( running )
{
SDL_Event ev;
while( SDL_PollEvent( &ev ) )
{
if( ( ev.type == SDL_QUIT ) ||
( ev.type == SDL_KEYDOWN && ev.key.keysym.sym == SDLK_ESCAPE ) )
{
running = false;
}
}
SDL_SetRenderDrawColor( renderer, i, i, i, SDL_ALPHA_OPAQUE );
SDL_RenderClear( renderer );
SDL_RenderPresent( renderer );
i++;
}
SDL_DestroyRenderer( renderer );
SDL_DestroyWindow( window );
SDL_Quit();
return 0;
}