wm_xr_intern.h

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/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
 
#pragma once
 
#include "CLG_log.h"
 
#include "wm_xr.h"
 
typedef struct wmXrSessionState {
  bool is_started;
 
  GHOST_XrPose viewer_pose;
  float viewer_viewmat[4][4];
  float focal_len;
 
  char prev_base_pose_type; /* eXRSessionBasePoseType */
  Object *prev_base_pose_object;
  int prev_settings_flag;
  float prev_eye_position_ofs[3];
 
  bool force_reset_to_base_pose;
  bool is_view_data_set;
} wmXrSessionState;
 
typedef struct wmXrRuntimeData {
  GHOST_XrContextHandle context;
 
  wmWindow *session_root_win;
 
  wmXrSessionState session_state;
  wmXrSessionExitFn exit_fn;
} wmXrRuntimeData;
 
typedef struct {
  struct GPUOffScreen *offscreen;
  struct GPUViewport *viewport;
} wmXrSurfaceData;
 
typedef struct wmXrDrawData {
  struct Scene *scene;
  struct Depsgraph *depsgraph;
 
  wmXrData *xr_data;
  wmXrSurfaceData *surface_data;
 
  GHOST_XrPose base_pose;
  float eye_position_ofs[3]; /* Local/view space. */
} wmXrDrawData;
 
wmXrRuntimeData *wm_xr_runtime_data_create(void);
void wm_xr_runtime_data_free(wmXrRuntimeData **runtime);
 
void wm_xr_session_draw_data_update(const wmXrSessionState *state,
                                    const XrSessionSettings *settings,
                                    const GHOST_XrDrawViewInfo *draw_view,
                                    wmXrDrawData *draw_data);
void wm_xr_session_state_update(const XrSessionSettings *settings,
                                const wmXrDrawData *draw_data,
                                const GHOST_XrDrawViewInfo *draw_view,
                                wmXrSessionState *state);
bool wm_xr_session_surface_offscreen_ensure(wmXrSurfaceData *surface_data,
                                            const GHOST_XrDrawViewInfo *draw_view);
void *wm_xr_session_gpu_binding_context_create(void);
void wm_xr_session_gpu_binding_context_destroy(GHOST_ContextHandle context);
 
void wm_xr_pose_to_viewmat(const GHOST_XrPose *pose, float r_viewmat[4][4]);
void wm_xr_draw_view(const GHOST_XrDrawViewInfo *draw_view, void *customdata);