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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.
*
* The Original Code is Copyright (C) 2014 Blender Foundation.
* All rights reserved.
*/
/** \file
* \ingroup GHOST
*/
#pragma once
#include "GHOST_Context.h"
@class CAMetalLayer;
@class MTLCommandQueue;
@class MTLRenderPipelineState;
@class MTLTexture;
@class NSOpenGLContext;
@class NSOpenGLView;
@class NSView;
class GHOST_ContextCGL : public GHOST_Context {
public:
/**
* Constructor.
*/
GHOST_ContextCGL(bool stereoVisual,
NSView *metalView,
CAMetalLayer *metalLayer,
NSOpenGLView *openglView);
/**
* Destructor.
*/
~GHOST_ContextCGL();
/**
* Swaps front and back buffers of a window.
* \return A boolean success indicator.
*/
GHOST_TSuccess swapBuffers();
/**
* Activates the drawing context of this window.
* \return A boolean success indicator.
*/
GHOST_TSuccess activateDrawingContext();
/**
* Release the drawing context of the calling thread.
* \return A boolean success indicator.
*/
GHOST_TSuccess releaseDrawingContext();
unsigned int getDefaultFramebuffer();
/**
* Call immediately after new to initialize. If this fails then immediately delete the object.
* \return Indication as to whether initialization has succeeded.
*/
GHOST_TSuccess initializeDrawingContext();
/**
* Removes references to native handles from this context and then returns
* \return GHOST_kSuccess if it is OK for the parent to release the handles and
* GHOST_kFailure if releasing the handles will interfere with sharing
*/
GHOST_TSuccess releaseNativeHandles();
/**
* Sets the swap interval for swapBuffers.
* \param interval The swap interval to use.
* \return A boolean success indicator.
*/
GHOST_TSuccess setSwapInterval(int interval);
/**
* Gets the current swap interval for swapBuffers.
* \param intervalOut Variable to store the swap interval if it can be read.
* \return Whether the swap interval can be read.
*/
GHOST_TSuccess getSwapInterval(int &);
/**
* Updates the drawing context of this window.
* Needed whenever the window is changed.
* \return Indication of success.
*/
GHOST_TSuccess updateDrawingContext();
private:
/** Metal state */
NSView *m_metalView;
CAMetalLayer *m_metalLayer;
MTLCommandQueue *m_metalCmdQueue;
MTLRenderPipelineState *m_metalRenderPipeline;
/** OpenGL state, for GPUs that don't support Metal */
NSOpenGLView *m_openGLView;
/** The OpenGL drawing context */
NSOpenGLContext *m_openGLContext;
/** The virtualized default framebuffer */
unsigned int m_defaultFramebuffer;
/** The virtualized default framebuffer's texture */
MTLTexture *m_defaultFramebufferMetalTexture;
bool m_coreProfile;
const bool m_debug;
/** The first created OpenGL context (for sharing display lists) */
static NSOpenGLContext *s_sharedOpenGLContext;
static int s_sharedCount;
/* Metal functions */
void metalInit();
void metalFree();
void metalInitFramebuffer();
void metalUpdateFramebuffer();
void metalSwapBuffers();
};
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