Function main

examples/clients/opengl-sdl/OpenGLSampleCAPI.cpp:48–129

void renderScene();

int main(int argc, char *argv[]) {
    namespace SDL = osvr::SDL2;

    // Open SDL
    SDL::Lib lib;

    // Use OpenGL 2.1
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 1);

    // Create a window
    auto window = SDL::createWindow("OSVR", SDL_WINDOWPOS_UNDEFINED,
                                    SDL_WINDOWPOS_UNDEFINED, WIDTH, HEIGHT,
                                    SDL_WINDOW_OPENGL | SDL_WINDOW_SHOWN);
    if (!window) {
        std::cerr << "Could not create window: " << SDL_GetError() << std::endl;
        return -1;
    }

    // Create an OpenGL context and make it current.
    SDL::GLContext glctx(window.get());

    // Turn on V-SYNC
    SDL_GL_SetSwapInterval(1);

    // Start OSVR and get OSVR display config
    osvr::clientkit::ClientContext ctx("com.osvr.example.SDLOpenGL");
    OSVR_DisplayConfig display;
    auto ret = osvrClientGetDisplay(ctx.get(), &display);
    if (ret != OSVR_RETURN_SUCCESS) {
        std::cerr << "\nCould not get display config (server probably not "
                     "running or not behaving), exiting."
                  << std::endl;
        return -1;
    }

    std::cout << "Waiting for the display to fully start up, including "
                 "receiving initial pose update..."
              << std::endl;
    while (osvrClientCheckDisplayStartup(display) != OSVR_RETURN_SUCCESS) {
        ctx.update();
    }
    std::cout << "OK, display startup status is good!" << std::endl;

    // Event handler
    SDL_Event e;
#ifndef __ANDROID__ // Don't want to pop up the on-screen keyboard
    SDL::TextInput textinput;
#endif
    bool quit = false;
    while (!quit) {
        // Handle all queued events
        while (SDL_PollEvent(&e)) {
            switch (e.type) {
            case SDL_QUIT:
                // Handle some system-wide quit event
                quit = true;
                break;