std::unique_ptr<CDevice> CDevice::Create(SDL_Window* window)
{
std::unique_ptr<CDevice> device(new CDevice());
if (window)
{
device->m_Context = SDL_GL_CreateContext(window);
if (!device->m_Context)
{
LOGERROR("SDL_GL_CreateContext failed: '%s'", SDL_GetError());
return nullptr;
}
#if OS_WIN
ogl_Init(SDL_GL_GetProcAddress, wutil_GetAppHDC());
#elif defined(SDL_VIDEO_DRIVER_X11) && !CONFIG2_GLES
ogl_Init(SDL_GL_GetProcAddress, GetX11Display(m_Window));
#else
ogl_Init(SDL_GL_GetProcAddress);
#endif
}
else
{
// SDL_GL_GetProcAddress is available because we called SDL_GL_LoadLibrary
#if OS_WIN
ogl_Init(SDL_GL_GetProcAddress, wutil_GetAppHDC());
#elif defined(SDL_VIDEO_DRIVER_X11) && !CONFIG2_GLES
ogl_Init(SDL_GL_GetProcAddress, XOpenDisplay(NULL));
#else
ogl_Init(SDL_GL_GetProcAddress);
#endif
InitGraphics(g_AtlasGameLoop->args, g_InitFlags, {});
#if OS_WIN || defined(SDL_VIDEO_DRIVER_X11) && !CONFIG2_GLES
ogl_SetVsyncEnabled(true);
}
if ((ogl_HaveExtensions(0, "GL_ARB_vertex_program", "GL_ARB_fragment_program", nullptr) // ARB
&& ogl_HaveExtensions(0, "GL_ARB_vertex_shader", "GL_ARB_fragment_shader", nullptr)) // GLSL
|| !ogl_HaveExtension("GL_ARB_vertex_buffer_object") // VBO
|| ogl_HaveExtensions(0, "GL_ARB_multitexture", "GL_EXT_draw_range_elements", nullptr)
|| (!ogl_HaveExtension("GL_EXT_framebuffer_object") && !ogl_HaveExtension("GL_ARB_framebuffer_object")))
{
// It doesn't make sense to continue working here, because we're not
// able to display anything.
DEBUG_DISPLAY_FATAL_ERROR(
L"Your graphics card doesn't appear to be fully compatible with OpenGL shaders."
L" The game does not support pre-shader graphics cards."
L" You are advised to try installing newer drivers and/or upgrade your graphics card."
L" For more information, please see http://www.wildfiregames.com/forum/index.php?showtopic=16734"
);
}
device->m_Name = GetNameImpl();
device->m_Version = GetVersionImpl();
device->m_DriverInformation = GetDriverInformationImpl();
device->m_Extensions = GetExtensionsImpl();
return device;
}