197 lines
4.1 KiB
C++
197 lines
4.1 KiB
C++
/*
|
|
* 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
|
|
*
|
|
* Manage GL vertex array IDs in a thread-safe way
|
|
* Use these instead of glGenBuffers & its friends
|
|
* - alloc must be called from a thread that is bound
|
|
* to the context that will be used for drawing with
|
|
* this VAO.
|
|
* - free can be called from any thread
|
|
*/
|
|
|
|
/* TODO Create cmake option. */
|
|
#define WITH_OPENGL_BACKEND 1
|
|
|
|
#include "BLI_assert.h"
|
|
#include "BLI_utildefines.h"
|
|
|
|
#include "GPU_context.h"
|
|
#include "GPU_framebuffer.h"
|
|
|
|
#include "GHOST_C-api.h"
|
|
|
|
#include "gpu_backend.hh"
|
|
#include "gpu_batch_private.hh"
|
|
#include "gpu_context_private.hh"
|
|
#include "gpu_matrix_private.h"
|
|
|
|
#ifdef WITH_OPENGL_BACKEND
|
|
# include "gl_backend.hh"
|
|
# include "gl_context.hh"
|
|
#endif
|
|
|
|
#include <mutex>
|
|
#include <vector>
|
|
|
|
using namespace blender::gpu;
|
|
|
|
static thread_local Context *active_ctx = nullptr;
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name gpu::Context methods
|
|
* \{ */
|
|
|
|
namespace blender::gpu {
|
|
|
|
Context::Context()
|
|
{
|
|
thread_ = pthread_self();
|
|
is_active_ = false;
|
|
matrix_state = GPU_matrix_state_create();
|
|
}
|
|
|
|
Context::~Context()
|
|
{
|
|
GPU_matrix_state_discard(matrix_state);
|
|
delete state_manager;
|
|
delete front_left;
|
|
delete back_left;
|
|
delete front_right;
|
|
delete back_right;
|
|
delete imm;
|
|
}
|
|
|
|
bool Context::is_active_on_thread()
|
|
{
|
|
return (this == active_ctx) && pthread_equal(pthread_self(), thread_);
|
|
}
|
|
|
|
Context *Context::get()
|
|
{
|
|
return active_ctx;
|
|
}
|
|
|
|
} // namespace blender::gpu
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
|
|
GPUContext *GPU_context_create(void *ghost_window)
|
|
{
|
|
if (GPUBackend::get() == nullptr) {
|
|
/* TODO move where it make sense. */
|
|
GPU_backend_init(GPU_BACKEND_OPENGL);
|
|
}
|
|
|
|
Context *ctx = GPUBackend::get()->context_alloc(ghost_window);
|
|
|
|
GPU_context_active_set(wrap(ctx));
|
|
return wrap(ctx);
|
|
}
|
|
|
|
/* to be called after GPU_context_active_set(ctx_to_destroy) */
|
|
void GPU_context_discard(GPUContext *ctx_)
|
|
{
|
|
Context *ctx = unwrap(ctx_);
|
|
delete ctx;
|
|
active_ctx = nullptr;
|
|
}
|
|
|
|
/* ctx can be NULL */
|
|
void GPU_context_active_set(GPUContext *ctx_)
|
|
{
|
|
Context *ctx = unwrap(ctx_);
|
|
|
|
if (active_ctx) {
|
|
active_ctx->deactivate();
|
|
}
|
|
|
|
active_ctx = ctx;
|
|
|
|
if (ctx) {
|
|
ctx->activate();
|
|
}
|
|
}
|
|
|
|
GPUContext *GPU_context_active_get(void)
|
|
{
|
|
return wrap(Context::get());
|
|
}
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Main context global mutex
|
|
*
|
|
* Used to avoid crash on some old drivers.
|
|
* \{ */
|
|
|
|
static std::mutex main_context_mutex;
|
|
|
|
void GPU_context_main_lock(void)
|
|
{
|
|
main_context_mutex.lock();
|
|
}
|
|
|
|
void GPU_context_main_unlock(void)
|
|
{
|
|
main_context_mutex.unlock();
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Backend selection
|
|
* \{ */
|
|
|
|
static GPUBackend *g_backend;
|
|
|
|
void GPU_backend_init(eGPUBackendType backend_type)
|
|
{
|
|
BLI_assert(g_backend == nullptr);
|
|
|
|
switch (backend_type) {
|
|
#if WITH_OPENGL_BACKEND
|
|
case GPU_BACKEND_OPENGL:
|
|
g_backend = new GLBackend;
|
|
break;
|
|
#endif
|
|
default:
|
|
BLI_assert(0);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void GPU_backend_exit(void)
|
|
{
|
|
/* TODO assert no resource left. Currently UI textures are still not freed in their context
|
|
* correctly. */
|
|
delete g_backend;
|
|
g_backend = nullptr;
|
|
}
|
|
|
|
GPUBackend *GPUBackend::get()
|
|
{
|
|
return g_backend;
|
|
}
|
|
|
|
/** \} */
|