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#ifdef __GNUC__
#define no_warn_start _Pragma("GCC diagnostic push") \
_Pragma("GCC diagnostic ignored \"-Wpedantic\"") \
_Pragma("GCC diagnostic ignored \"-Wsign-conversion\"") \
_Pragma("GCC diagnostic ignored \"-Wsign-compare\"") \
_Pragma("GCC diagnostic ignored \"-Wconversion\"") \
_Pragma("GCC diagnostic ignored \"-Wimplicit-fallthrough\"") \
_Pragma("GCC diagnostic ignored \"-Wunused-function\"")
#define no_warn_end _Pragma("GCC diagnostic pop")
#else
#define no_warn_start
#define no_warn_end
#endif
no_warn_start
#include <SDL2/SDL.h>
no_warn_end
#include <GL/gl.h>
#include <stdbool.h>
static void die(char const *fmt, ...) {
char buf[256] = {0};
va_list args;
va_start(args, fmt);
vsnprintf(buf, sizeof buf - 1, fmt, args);
va_end(args);
// show a message box, and if that fails, print to stderr
if (SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Error", buf, NULL) < 0) {
fprintf(stderr, "%s\n", buf);
}
exit(EXIT_FAILURE);
}
int main(void) {
if (SDL_Init(SDL_INIT_VIDEO) < 0)
die("%s", SDL_GetError());
SDL_Window *window = SDL_CreateWindow("ted", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 1280, 720, SDL_WINDOW_SHOWN|SDL_WINDOW_OPENGL);
if (!window)
die("%s", SDL_GetError());
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
SDL_GLContext *glctx = SDL_GL_CreateContext(window);
if (!glctx) {
die("%s", SDL_GetError());
}
SDL_GL_SetSwapInterval(1); // vsync
bool quit = false;
while (!quit) {
SDL_Event event;
while (SDL_PollEvent(&event)) {
switch (event.type) {
case SDL_QUIT:
quit = true;
break;
}
}
glClearColor(0,0,0,1);
glClear(GL_COLOR_BUFFER_BIT);
SDL_GL_SwapWindow(window);
}
return 0;
}
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