InitGL::InitGL(bool double_buffer, int sample_size) {
if (SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3) != 0) {
sdl_error("SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3)");
InitGL::InitGL(bool double_buffer, int sample_size) {
if (SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3) != 0) {
sdl_error("SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3)");