GHOST_ContextWGL.hh

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/* SPDX-FileCopyrightText: 2013 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */

 
#pragma once
 
#include "GHOST_Context.hh"
 
#include <epoxy/wgl.h>
 
#ifndef GHOST_OPENGL_WGL_RESET_NOTIFICATION_STRATEGY
#  define GHOST_OPENGL_WGL_RESET_NOTIFICATION_STRATEGY 0
#endif
 
class GHOST_ContextWGL : public GHOST_Context {
  /* XR code needs low level graphics data to send to OpenXR. */
  friend class GHOST_XrGraphicsBindingOpenGL;
 
 public:
  GHOST_ContextWGL(const GHOST_ContextParams &context_params,
                   bool alphaBackground,
                   HWND hWnd,
                   HDC hDC,
                   int contextProfileMask,
                   int contextMajorVersion,
                   int contextMinorVersion,
                   int contextFlags,
                   int contextResetNotificationStrategy);

  ~GHOST_ContextWGL() override;

  GHOST_TSuccess swapBufferAcquire() override
  {
    return GHOST_kSuccess;
  }

  GHOST_TSuccess swapBufferRelease() override;

  GHOST_TSuccess activateDrawingContext() override;

  GHOST_TSuccess releaseDrawingContext() override;

  GHOST_TSuccess initializeDrawingContext() override;

  GHOST_TSuccess releaseNativeHandles() override;

  GHOST_TSuccess setSwapInterval(int interval) override;

  GHOST_TSuccess getSwapInterval(int &interval_out) override;
 
 private:
  int choose_pixel_format_arb(bool stereoVisual, bool needAlpha);
  int _choose_pixel_format_arb_1(bool stereoVisual, bool needAlpha);
 
  HWND h_wnd_;
  HDC h_DC_;
 
  const int context_profile_mask_;
  const int context_major_version_;
  const int context_minor_version_;
  const int context_flags_;
  const bool alpha_background_;
  const int context_reset_notification_strategy_;
 
  HGLRC h_GLRC_;
 
#ifndef NDEBUG
  const char *dummy_vendor_;
  const char *dummy_renderer_;
  const char *dummy_version_;
#endif
 
  static HGLRC s_sharedHGLRC;
  static int s_sharedCount;
};