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
|
/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Wayland module
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "window.h"
#include "compositor.h"
#include <QPainter>
#include <QMatrix4x4>
#include <QOpenGLFunctions>
#include <QOpenGLTexture>
Window::Window()
: m_compositor(0)
{
}
void Window::setCompositor(Compositor *comp) {
m_compositor = comp;
}
void Window::initializeGL()
{
m_textureBlitter.create();
}
static int sillyrandom(int range)
{
if (range <= 0)
range = 200;
return qrand() % range;
}
void Window::paintGL()
{
m_compositor->startRender();
QOpenGLFunctions *functions = context()->functions();
functions->glClearColor(.4f, .7f, .1f, 0.5f);
functions->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
m_textureBlitter.bind();
functions->glEnable(GL_BLEND);
functions->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
qsrand(31337);
Q_FOREACH (View *view, m_compositor->views()) {
if (view->isCursor())
continue;
auto texture = view->getTexture();
if (!texture)
continue;
GLuint textureId = texture->textureId();
QWaylandSurface *surface = view->surface();
if (surface && surface->hasContent()) {
QSize s = surface->size();
QPointF pos(sillyrandom(width() - s.width()), sillyrandom(height() - s.height()));
QRectF surfaceGeometry(pos, s);
QOpenGLTextureBlitter::Origin surfaceOrigin =
view->currentBuffer().origin() == QWaylandSurface::OriginTopLeft
? QOpenGLTextureBlitter::OriginTopLeft
: QOpenGLTextureBlitter::OriginBottomLeft;
QMatrix4x4 targetTransform = QOpenGLTextureBlitter::targetTransform(surfaceGeometry, QRect(QPoint(), size()));
m_textureBlitter.blit(textureId, targetTransform, surfaceOrigin);
}
}
m_textureBlitter.release();
m_compositor->endRender();
}
|
