int main(int argc, char* argv[]) {
// If intialising of SDL fails -> quit the program with error code 1
if (!init_SDL()) {
quit_program(1);
}
// If intialising of OpenGL fails -> quit the program with error code 1
if (!init_OpenGL(default_width, default_height)) {
quit_program(1);
}
// Repeat forever
while(true) {
// Draw your graphics
draw_screen();
// Process any ocuring events
process_events();
fflush(stdout);
}
// You shouldn't get here. Only if someone changes the while condition...
quit_program(0);
return 0;
}
Display* Display_init(char* title, unsigned int width, unsigned int height) {
if (SDL_Init(SDL_INIT_VIDEO) != 0) {
printf("Failed to initialize SDL\n");
return NULL;
}
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
//SDL_GL_SetSwapInterval(0); // vsync off if driver allows
SDL_Window* window = SDL_CreateWindow(
title,
SDL_WINDOWPOS_CENTERED,
SDL_WINDOWPOS_CENTERED,
width,
height,
SDL_WINDOW_OPENGL
);
SDL_WarpMouseInWindow(
window,
(float) width / 2.f,
(float) height / 2.f
);
//SDL_SetRelativeMouseMode(true); // grab mouse
SDL_GLContext context = SDL_GL_CreateContext(window);
Display* display = malloc(sizeof(Display));
display->window = window;
display->context = context;
display->width = width;
display->height = height;
init_OpenGL(display);
return display;
}
