1 #include <stdio.h>

2 #include <stdlib.h>

3 #include <assert.h>

4 #include <SDL2/SDL.h>

5 #include <GL/glew.h>

6 #include "app.h"

7

8 static bool handle_event(SDL_Event *ev);

9

10 static SDL_Window *win;

11 static SDL_GLContext ctx;

12 static bool quit;

13

14 int main(int argc, char **argv)

15 {

16 SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER);

17 int winx = SDL_WINDOWPOS_UNDEFINED;

18 int winy = SDL_WINDOWPOS_UNDEFINED;

19

20 if(!(win = SDL_CreateWindow("OpenVR test", winx, winy, 1024, 640, SDL_WINDOW_OPENGL))) {

21 fprintf(stderr, "failed to open window\n");

22 return 1;

23 }

24 if(!(ctx = SDL_GL_CreateContext(win))) {

25 fprintf(stderr, "failed to create OpenGL context\n");

26 return 1;

27 }

28 int xsz, ysz;

29 SDL_GetWindowSize(win, &xsz, &ysz);

30 app_reshape(xsz, ysz);

31

32 if(!app_init()) {

33 return 1;

34 }

35

36 for(;;) {

37 SDL_Event ev;

38 while(SDL_PollEvent(&ev)) {

39 if(!handle_event(&ev) || quit) {

40 goto done;

41 }

42 }

43

44 app_draw();

45 assert(glGetError() == GL_NO_ERROR);

46 }

47

48 done:

49 app_shutdown();

50 SDL_Quit();

51 return 0;

52 }

53

54 void app_swap_buffers()

55 {

56 SDL_GL_SwapWindow(win);

57 }

58

59 void app_quit()

60 {

61 quit = true;

62 }

63

64 static bool handle_event(SDL_Event *ev)

65 {

66 switch(ev->type) {

67 case SDL_QUIT:

68 return false;

69

70 case SDL_KEYDOWN:

71 case SDL_KEYUP:

72 app_keyboard(ev->key.keysym.sym, ev->key.state == SDL_PRESSED);

73 break;

74

75 case SDL_WINDOWEVENT:

76 if(ev->window.event == SDL_WINDOWEVENT_RESIZED) {

77 app_reshape(ev->window.data1, ev->window.data2);

78 }

79 break;

80

81 default:

82 break;

83 }

84 return true;

85 }