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1 #ifndef GOAT3DGFX_VR_H_
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2 #define GOAT3DGFX_VR_H_
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3
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4 /* VR mode init options */
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5 enum vr_init_mode {
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6 VR_INIT_NONE,
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7 VR_INIT_OCULUS,
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8 VR_INIT_STEREO
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9 };
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10
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11 /* possible eye values */
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12 enum {
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13 VR_EYE_CENTER,
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14 VR_EYE_LEFT,
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15 VR_EYE_RIGHT
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16 };
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17
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18 #ifdef __cplusplus
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19 extern "C" {
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20 #endif
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21
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22 int vr_init(enum vr_init_mode mode);
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23 void vr_shutdown(void);
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24
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25 const char *vr_get_display_name(void);
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26 void vr_get_display_pos(int *xptr, int *yptr);
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27
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28 int vr_get_width(void);
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29 int vr_get_height(void);
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30
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31 float vr_get_fov(void);
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32 float vr_get_aspect(void);
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33
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34 void vr_set_eyedist(float ipd);
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35 float vr_get_eyedist(void);
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36
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37 /* expects an array of 4 barrel distortion coefficients:
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38 * polar scale: k_0 + k_1 r^2 + k_2 r^4 + k_3 r^6
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39 */
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40 void vr_set_distort(const float *coef);
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41 void vr_get_distort(float *coef);
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42
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43 void vr_set_prediction_sec(float dt);
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44 float vr_get_prediction_sec(void);
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45
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46 void vr_get_view_matrix(float *res, int eye);
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47 void vr_get_proj_matrix(float *res, int eye);
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48
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49 /* expects an array of at least 3 floats (x, y, z, offset). */
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50 void vr_get_translation(float *offs);
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51 /* expects an array of at least 4 floats (x, y, z, w, quaternion). */
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52 void vr_get_rotation(float *quat);
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53 /* expects an array of at least 3 floats (pitch, yaw, roll, angles). */
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54 void vr_get_rotation_euler(float *euler);
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55
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56 /* OpenGL stuff */
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57 void vr_draw_eye(int eye, unsigned int tex, float tex_scale_x, float tex_scale_y);
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58
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59 #ifdef __cplusplus
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60 }
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61 #endif
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62
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63 #endif /* GOAT3DGFX_VR_H_ */
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