144 lines
3.7 KiB
C++
144 lines
3.7 KiB
C++
/* SPDX-FileCopyrightText: 2013 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup GHOST
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*/
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#pragma once
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#ifndef WITH_OPENGL_BACKEND
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# error "ContextEGL requires WITH_OPENGL_BACKEND"
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#endif
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#include "GHOST_Context.hh"
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#include "GHOST_System.hh"
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#include <epoxy/egl.h>
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#include <epoxy/gl.h>
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#ifndef GHOST_OPENGL_EGL_CONTEXT_FLAGS
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# define GHOST_OPENGL_EGL_CONTEXT_FLAGS 0
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#endif
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#ifndef GHOST_OPENGL_EGL_RESET_NOTIFICATION_STRATEGY
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# define GHOST_OPENGL_EGL_RESET_NOTIFICATION_STRATEGY 0
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#endif
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class GHOST_ContextEGL : public GHOST_Context {
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/* XR code needs low level graphics data to send to OpenXR. */
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friend class GHOST_XrGraphicsBindingOpenGL;
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public:
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/**
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* Constructor.
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*/
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GHOST_ContextEGL(const GHOST_System *const system,
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const GHOST_ContextParams &context_params,
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EGLNativeWindowType nativeWindow,
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EGLNativeDisplayType nativeDisplay,
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EGLint contextProfileMask,
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EGLint contextMajorVersion,
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EGLint contextMinorVersion,
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EGLint contextFlags,
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EGLint contextResetNotificationStrategy,
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EGLenum api);
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/**
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* Destructor.
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*/
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~GHOST_ContextEGL() override;
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/**
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* Swaps front and back buffers of a window.
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* \return A boolean success indicator.
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*/
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GHOST_TSuccess swapBuffers() override;
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/**
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* Activates the drawing context of this window.
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* \return A boolean success indicator.
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*/
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GHOST_TSuccess activateDrawingContext() override;
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/**
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* Release the drawing context of the calling thread.
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* \return A boolean success indicator.
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*/
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GHOST_TSuccess releaseDrawingContext() override;
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/**
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* Call immediately after new to initialize. If this fails then immediately delete the object.
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* \return Indication as to whether initialization has succeeded.
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*/
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GHOST_TSuccess initializeDrawingContext() override;
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/**
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* Removes references to native handles from this context and then returns
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* \return GHOST_kSuccess if it is OK for the parent to release the handles and
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* GHOST_kFailure if releasing the handles will interfere with sharing
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*/
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GHOST_TSuccess releaseNativeHandles() override;
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/**
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* Sets the swap interval for #swapBuffers.
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* \param interval: The swap interval to use.
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* \return A boolean success indicator.
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*/
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GHOST_TSuccess setSwapInterval(int interval) override;
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/**
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* Gets the current swap interval for #swapBuffers.
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* \param interval_out: Variable to store the swap interval if it can be read.
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* \return Whether the swap interval can be read.
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*/
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GHOST_TSuccess getSwapInterval(int &interval_out) override;
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EGLDisplay getDisplay() const;
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EGLConfig getConfig() const;
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EGLContext getContext() const;
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private:
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bool bindAPI(EGLenum api);
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const GHOST_System *const system_;
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EGLNativeDisplayType native_display_;
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EGLNativeWindowType native_window_;
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const EGLint context_profile_mask_;
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const EGLint context_major_version_;
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const EGLint context_minor_version_;
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const EGLint context_flags_;
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const EGLint context_reset_notification_strategy_;
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const EGLenum api_;
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EGLContext context_;
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EGLSurface surface_;
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EGLDisplay display_;
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EGLConfig config_;
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EGLint swap_interval_;
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EGLContext &shared_context_;
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EGLint &shared_count_;
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/**
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* True when the surface is created from `native_window_`.
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*/
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bool surface_from_native_window_;
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static EGLContext s_gl_sharedContext;
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static EGLint s_gl_sharedCount;
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static EGLContext s_gles_sharedContext;
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static EGLint s_gles_sharedCount;
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static EGLContext s_vg_sharedContext;
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static EGLint s_vg_sharedCount;
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};
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