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
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
// Copyright (c) 2010-2026, Lawrence Livermore National Security, LLC. Produced
// at the Lawrence Livermore National Laboratory. All Rights reserved. See files
// LICENSE and NOTICE for details. LLNL-CODE-443271.
//
// This file is part of the GLVis visualization tool and library. For more
// information and source code availability see https://glvis.org.
//
// GLVis is free software; you can redistribute it and/or modify it under the
// terms of the BSD-3 license. We welcome feedback and contributions, see file
// CONTRIBUTING.md for details.
#if defined(GLVIS_USE_EGL) || defined(GLVIS_USE_CGL)
#include <cassert>
#include <iostream>
#include <vector>
#include "egl.hpp"
#include "egl_main.hpp"
#include "../aux_vis.hpp"
#ifdef GLVIS_DEBUG
#define PRINT_DEBUG(s) std::cerr << s
#else
#define PRINT_DEBUG(s) {}
#endif
using namespace std;
EglWindow::~EglWindow()
{
EglMainThread::Get().DeleteWindow(this, handle);
}
bool EglWindow::createWindow(const char *, int, int, int w, int h,
bool legacyGlOnly)
{
handle = EglMainThread::Get().CreateWindow(this, w, h, legacyGlOnly);
if (!handle.isInitialized())
{
return false;
}
#ifdef GLVIS_USE_CGL
return true; // CGL already called initGLEW() during CreateWindow()
#endif
#ifndef __EMSCRIPTEN__
glEnable(GL_DEBUG_OUTPUT);
#endif
PRINT_DEBUG("EGL context is ready" << endl);
return initGLEW(legacyGlOnly);
}
void EglWindow::queueEvents(vector<Event> events)
{
{
lock_guard<mutex> evt_guard{event_mutex};
waiting_events.insert(waiting_events.end(), events.begin(), events.end());
}
if (is_multithreaded)
{
events_available.notify_all();
}
}
void EglWindow::mainLoop()
{
running = true;
while (running)
{
mainIter();
}
}
void EglWindow::mainIter()
{
bool sleep = false;
bool events_pending = false;
{
lock_guard<mutex> evt_guard{event_mutex};
events_pending = !waiting_events.empty();
}
if (events_pending)
{
do
{
Event e;
// Fetch next event from the queue
{
lock_guard<mutex> evt_guard{event_mutex};
e = waiting_events.front();
waiting_events.pop_front();
events_pending = !waiting_events.empty();
}
switch (e.type)
{
case EventType::Keydown:
if (onKeyDown[e.event.keydown.k])
{
onKeyDown[e.event.keydown.k](e.event.keydown.m);
recordKey(e.event.keydown.k, e.event.keydown.m);
}
break;
case EventType::Screenshot:
if (isExposePending())
{
onExpose();
wnd_state = RenderState::Updated;
}
Screenshot(screenshot_filename.c_str(), e.event.screenshot.convert);
break;
case EventType::Quit:
running = false;
break;
}
}
while (events_pending);
}
else if (onIdle)
{
sleep = onIdle();
}
else
{
// No actions performed this iteration.
sleep = true;
}
if (isExposePending())
{
onExpose();
wnd_state = RenderState::Updated;
}
else if (sleep)
{
unique_lock<mutex> event_lock{event_mutex};
events_available.wait(event_lock, [this]()
{
// Sleep until events from WM or glvis_command can be handled
return !waiting_events.empty() || call_idle_func;
});
}
}
void EglWindow::signalLoop()
{
// Note: not executed from the main thread
{
lock_guard<mutex> evt_guard{event_mutex};
call_idle_func = true;
}
events_available.notify_all();
}
void EglWindow::getGLDrawSize(int& w, int& h) const
{
#ifdef GLVIS_USE_EGL
EGLint egl_w, egl_h;
EGLDisplay disp = EglMainThread::Get().GetDisplay();
eglQuerySurface(disp, handle.surf, EGL_WIDTH, &egl_w);
eglQuerySurface(disp, handle.surf, EGL_HEIGHT, &egl_h);
w = egl_w;
h = egl_h;
#endif
#ifdef GLVIS_USE_CGL
GLint cgl_w, cgl_h;
// Bind the color renderbuffer
glBindRenderbuffer(GL_RENDERBUFFER, handle.buf_color);
assert(glGetError() == GL_NO_ERROR);
// Query width and height
glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_WIDTH, &cgl_w);
glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_HEIGHT, &cgl_h);
assert(glGetError() == GL_NO_ERROR);
// Unbind to restore state
glBindRenderbuffer(GL_RENDERBUFFER, 0);
assert(glGetError() == GL_NO_ERROR);
w = cgl_w;
h = cgl_h;
#endif
}
bool EglWindow::isHighDpi() const
{
return GetUseHiDPI();
}
void EglWindow::setWindowSize(int w, int h)
{
EglMainThread::Get().ResizeWindow(handle, w, h);
}
void EglWindow::signalKeyDown(SDL_Keycode k, SDL_Keymod m)
{
Event::Events e;
e.keydown = {k, m};
queueEvents({{EventType::Keydown, e}});
}
void EglWindow::signalQuit()
{
queueEvents({{EventType::Quit, {}}});
}
void EglWindow::screenshot(string filename, bool convert)
{
screenshot_filename = filename;
Event::Events e;
e.screenshot = {convert};
queueEvents({{EventType::Screenshot, e}});
// Queue up an expose, so Screenshot() can pull image from updated buffer
signalExpose();
}
#endif // GLVIS_USE_EGL || GLVIS_USE_CGL
|
