blob: c16ca64f5469660df242b2826399fb3b789d1dbc (
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
|
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd
** All rights reserved.
** For any questions to The Qt Company, please use contact form at http://qt.io
**
** This file is part of the Qt Data Visualization module.
**
** Licensees holding valid commercial license for Qt may use this file in
** accordance with the Qt License Agreement provided with the Software
** or, alternatively, in accordance with the terms contained in a written
** agreement between you and The Qt Company.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.io
**
****************************************************************************/
#ifndef QUTILS_H
#define QUTILS_H
#include <QtGui/QSurfaceFormat>
#include <QtGui/QOpenGLContext>
#include <QtGui/QOffscreenSurface>
#include <QtCore/QCoreApplication>
namespace QtDataVisualization {
inline static QSurfaceFormat qDefaultSurfaceFormat(bool antialias = true)
{
bool isES = false;
QSurfaceFormat surfaceFormat;
// Common attributes
surfaceFormat.setDepthBufferSize(24);
surfaceFormat.setStencilBufferSize(8);
surfaceFormat.setSwapBehavior(QSurfaceFormat::DoubleBuffer);
surfaceFormat.setRenderableType(QSurfaceFormat::DefaultRenderableType);
QOpenGLContext *ctx = QOpenGLContext::currentContext();
QOffscreenSurface *dummySurface = 0;
if (!ctx) {
dummySurface = new QOffscreenSurface();
dummySurface->setFormat(surfaceFormat);
dummySurface->create();
ctx = new QOpenGLContext;
ctx->setFormat(surfaceFormat);
ctx->create();
ctx->makeCurrent(dummySurface);
}
#if defined(QT_OPENGL_ES_2)
isES = true;
#elif (QT_VERSION < QT_VERSION_CHECK(5, 3, 0))
isES = false;
#else
isES = ctx->isOpenGLES();
#endif
if (dummySurface) {
ctx->doneCurrent();
delete ctx;
delete dummySurface;
}
#if (QT_VERSION >= QT_VERSION_CHECK(5, 4, 0))
// We support only ES2 emulation with software renderer for now
if (QCoreApplication::testAttribute(Qt::AA_UseSoftwareOpenGL)) {
qWarning("Only OpenGL ES2 emulation is available for software rendering.");
isES = true;
}
#endif
if (isES) {
// For ES2 only attributes
surfaceFormat.setRedBufferSize(8);
surfaceFormat.setBlueBufferSize(8);
surfaceFormat.setGreenBufferSize(8);
} else {
surfaceFormat.setVersion(2, 1);
surfaceFormat.setProfile(QSurfaceFormat::CoreProfile);
// For OpenGL only attributes
if (antialias)
surfaceFormat.setSamples(8);
else
surfaceFormat.setSamples(0);
}
return surfaceFormat;
}
}
#endif
|
