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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) 2016 by Mike Erwin.
* All rights reserved.
*/
/** \file
* \ingroup gpu
*
* This interface allow GPU to manage GL objects for multiple context and threads.
*/
#pragma once
#include "MEM_guardedalloc.h"
#include "GPU_context.h"
#include "gpu_framebuffer_private.hh"
#include "gpu_immediate_private.hh"
#include "gpu_shader_private.hh"
#include "gpu_state_private.hh"
#include <pthread.h>
struct GPUMatrixState;
namespace blender::gpu {
class Context {
public:
/** State management */
Shader *shader = NULL;
FrameBuffer *active_fb = NULL;
GPUMatrixState *matrix_state = NULL;
StateManager *state_manager = NULL;
Immediate *imm = NULL;
/**
* All 4 window frame-buffers.
* None of them are valid in an off-screen context.
* Right frame-buffers are only available if using stereo rendering.
* Front frame-buffers contains (in principle, but not always) the last frame color.
* Default frame-buffer is back_left.
*/
FrameBuffer *back_left = NULL;
FrameBuffer *front_left = NULL;
FrameBuffer *back_right = NULL;
FrameBuffer *front_right = NULL;
protected:
/** Thread on which this context is active. */
pthread_t thread_;
bool is_active_;
/** Avoid including GHOST headers. Can be NULL for off-screen contexts. */
void *ghost_window_;
public:
Context();
virtual ~Context();
static Context *get(void);
virtual void activate(void) = 0;
virtual void deactivate(void) = 0;
/* Will push all pending commands to the GPU. */
virtual void flush(void) = 0;
/* Will wait until the GPU has finished executing all command. */
virtual void finish(void) = 0;
virtual void memory_statistics_get(int *total_mem, int *free_mem) = 0;
bool is_active_on_thread(void);
};
/* Syntacting suggar. */
static inline GPUContext *wrap(Context *ctx)
{
return reinterpret_cast<GPUContext *>(ctx);
}
static inline Context *unwrap(GPUContext *ctx)
{
return reinterpret_cast<Context *>(ctx);
}
static inline const Context *unwrap(const GPUContext *ctx)
{
return reinterpret_cast<const Context *>(ctx);
}
} // namespace blender::gpu
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