blob: a9d32dcf297949da1a231559af715aba98107b40 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
/*
* 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;
}
/** \} */
|
