1 #ifndef VR_H_

2 #define VR_H_

3

4 enum {

5 VR_EYE_LEFT,

6 VR_EYE_RIGHT

7 };

8

9 #ifdef __cplusplus

10 extern "C" {

11 #endif

12

13 int vr_init(void);

14 void vr_shutdown(void);

15

16 int vr_module_count(void);

17 const char *vr_module_name(int idx);

18

19 int vr_use_module(int idx);

20 int vr_use_module_named(const char *name);

21

22 /* if we're using a vr module which requires a specific output resolution, vr_display_size

23 * returns non-zero, and writes the size through the xsz/ysz pointers. Otherwise returns 0

24 */

25 int vr_display_size(int *xsz, int *ysz);

26 int vr_eye_texture_size(int eye, int *xsz, int *ysz);

27

28 /* returns non-zero if the active vr module provides this kind of matrix

29 * information, otherwise it returns zero, and sets mat to identity

30 */

31 int vr_view_matrix(int eye, float *mat);

32 int vr_proj_matrix(int eye, float *mat);

33

34 void vr_begin(int eye);

35 void vr_end(void);

36 void vr_present(void);

37

38 #ifdef __cplusplus

39 }

40 #endif

41

42 #endif /* VR_H_ */