GHOST_ContextEGL.hh

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

 
#pragma once
 
#ifndef WITH_OPENGL_BACKEND
#  error "ContextEGL requires WITH_OPENGL_BACKEND"
#endif
 
#include "GHOST_Context.hh"
#include "GHOST_System.hh"
 
#include <epoxy/egl.h>
#include <epoxy/gl.h>
 
#ifndef GHOST_OPENGL_EGL_CONTEXT_FLAGS
#  define GHOST_OPENGL_EGL_CONTEXT_FLAGS 0
#endif
 
#ifndef GHOST_OPENGL_EGL_RESET_NOTIFICATION_STRATEGY
#  define GHOST_OPENGL_EGL_RESET_NOTIFICATION_STRATEGY 0
#endif
 
class GHOST_ContextEGL : public GHOST_Context {
  /* XR code needs low level graphics data to send to OpenXR. */
  friend class GHOST_XrGraphicsBindingOpenGL;
 
 public:
  GHOST_ContextEGL(const GHOST_System *const system,
                   const GHOST_ContextParams &context_params,
                   EGLNativeWindowType nativeWindow,
                   EGLNativeDisplayType nativeDisplay,
                   EGLint contextProfileMask,
                   EGLint contextMajorVersion,
                   EGLint contextMinorVersion,
                   EGLint contextFlags,
                   EGLint contextResetNotificationStrategy,
                   EGLenum api);

  ~GHOST_ContextEGL() 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;
 
  EGLDisplay getDisplay() const;
 
  EGLConfig getConfig() const;
 
  EGLContext getContext() const;
 
 private:
  bool bindAPI(EGLenum api);
 
  const GHOST_System *const system_;
 
  EGLNativeDisplayType native_display_;
  EGLNativeWindowType native_window_;
 
  const EGLint context_profile_mask_;
  const EGLint context_major_version_;
  const EGLint context_minor_version_;
  const EGLint context_flags_;
  const EGLint context_reset_notification_strategy_;
 
  const EGLenum api_;
 
  EGLContext context_;
  EGLSurface surface_;
  EGLDisplay display_;
  EGLConfig config_;
 
  EGLint swap_interval_;
 
  EGLContext &shared_context_;
  EGLint &shared_count_;

  bool surface_from_native_window_;
 
  static EGLContext s_gl_sharedContext;
  static EGLint s_gl_sharedCount;
 
  static EGLContext s_gles_sharedContext;
  static EGLint s_gles_sharedCount;
 
  static EGLContext s_vg_sharedContext;
  static EGLint s_vg_sharedCount;
};