libgoatvr
view src/vr.h @ 16:b2d902fff68d
renamed VR_EYE_RES_SCALE to VR_RENDER_RES_SCALE
added convenience options: VR_RENDER_XRES & VR_RENDER_YRES, which are derived
from VR_LEYE_XRES, VR_REYE_XRES, etc.
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Thu, 25 Sep 2014 09:06:57 +0300 |
| parents | 27fcd4c2969d |
| children | 3de7339841d0 |
line source
1 #ifndef VR_H_
2 #define VR_H_
4 /* unit: pixels */
5 #define VR_DISPLAY_WIDTH "display-xres"
6 #define VR_DISPLAY_HEIGHT "display-yres"
7 #define VR_LEYE_XRES "left-eye-xres"
8 #define VR_LEYE_YRES "left-eye-yres"
9 #define VR_REYE_XRES "right-eye-xres"
10 #define VR_REYE_YRES "right-eye-yres"
11 #define VR_RENDER_XRES "render-xres" /* VR_LEYE_XRES + VR_REYE_XRES */
12 #define VR_RENDER_YRES "render-yres" /* max(VR_LEYE_YRES, VR_REYE_YRES) */
13 #define VR_WIN_XOFFS "win-xoffset"
14 #define VR_WIN_YOFFS "win-yoffset"
15 #define VR_RENDER_RES_SCALE "render-res-scale" /* default 1 */
16 /* unit: meters */
17 #define VR_EYE_HEIGHT "eye-height"
18 #define VR_IPD "ipd"
20 enum {
21 VR_EYE_LEFT,
22 VR_EYE_RIGHT
23 };
25 #ifdef __cplusplus
26 extern "C" {
27 #endif
29 int vr_init(void);
30 void vr_shutdown(void);
32 int vr_module_count(void);
33 const char *vr_module_name(int idx);
35 int vr_use_module(int idx);
36 int vr_use_module_named(const char *name);
38 void vr_seti(const char *optname, int val);
39 void vr_setf(const char *optname, float val);
40 int vr_geti(const char *optname);
41 float vr_getf(const char *optname);
42 /* variants of the get functions, with an additional "default value"
43 * argument, which is returned if the requested option is missing
44 */
45 int vr_geti_def(const char *optname, int def_val);
46 float vr_getf_def(const char *optname, float def_val);
48 int vr_view_translation(int eye, float *vec);
49 int vr_view_rotation(int eye, float *quat);
51 /* returns non-zero if the active vr module provides this kind of matrix
52 * information, otherwise it returns zero, and sets mat to identity
53 */
54 int vr_view_matrix(int eye, float *mat);
55 int vr_proj_matrix(int eye, float znear, float zfar, float *mat);
57 void vr_begin(int eye);
58 void vr_end(void);
59 int vr_swap_buffers(void);
61 /* set the output texture or separate textures for each eye */
62 void vr_output_texture(unsigned int tex, float umin, float vmin, float umax, float vmax);
63 void vr_output_texture_eye(int eye, unsigned int tex, float umin, float vmin, float umax, float vmax);
65 void vr_recenter(void);
67 #ifdef __cplusplus
68 }
69 #endif
71 #endif /* VR_H_ */