99de160340
On GPUs that support it, we now present OpenGL contents via CAMetalLayer. This fixes frame skipping issues found in T60043. If the system does not have a Metal capable GPU, NSOpenGLView will continue to be used. Patch by Tomoaki Kawada, with some changes by Brecht Van Lommel. Differential Revision: https://developer.blender.org/D4619
142 lines
3.8 KiB
Objective-C
142 lines
3.8 KiB
Objective-C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2014 Blender Foundation.
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* All rights reserved.
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*/
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/** \file
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* \ingroup GHOST
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*/
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#ifndef __GHOST_CONTEXTCGL_H__
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#define __GHOST_CONTEXTCGL_H__
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#include "GHOST_Context.h"
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@class CAMetalLayer;
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@class MTLCommandQueue;
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@class MTLRenderPipelineState;
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@class MTLTexture;
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@class NSOpenGLContext;
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@class NSOpenGLView;
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@class NSView;
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class GHOST_ContextCGL : public GHOST_Context {
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public:
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/**
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* Constructor.
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*/
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GHOST_ContextCGL(bool stereoVisual,
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NSView *metalView,
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CAMetalLayer *metalLayer,
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NSOpenGLView *openglView);
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/**
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* Destructor.
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*/
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~GHOST_ContextCGL();
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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();
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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();
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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();
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unsigned int getDefaultFramebuffer();
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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();
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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();
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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);
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/**
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* Gets the current swap interval for swapBuffers.
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* \param intervalOut 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 &);
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/**
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* Updates the drawing context of this window.
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* Needed whenever the window is changed.
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* \return Indication of success.
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*/
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GHOST_TSuccess updateDrawingContext();
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private:
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/** Metal state */
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NSView *m_metalView;
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CAMetalLayer *m_metalLayer;
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MTLCommandQueue *m_metalCmdQueue;
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MTLRenderPipelineState *m_metalRenderPipeline;
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/** OpenGL state, for GPUs that don't support Metal */
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NSOpenGLView *m_openGLView;
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/** The OpenGL drawing context */
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NSOpenGLContext *m_openGLContext;
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/** The virtualized default framebuffer */
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unsigned int m_defaultFramebuffer;
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/** The virtualized default framebuffer's texture */
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MTLTexture *m_defaultFramebufferMetalTexture;
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bool m_coreProfile;
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const bool m_debug;
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/** The first created OpenGL context (for sharing display lists) */
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static NSOpenGLContext *s_sharedOpenGLContext;
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static int s_sharedCount;
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/* Metal functions */
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void metalInit();
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void metalFree();
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void metalInitFramebuffer();
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void metalUpdateFramebuffer();
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void metalSwapBuffers();
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};
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#endif // __GHOST_CONTEXTCGL_H__
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