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39
40#include "qopenglfunctions_es2.h"
41#include "qopenglcontext.h"
42
43QT_BEGIN_NAMESPACE
44
45/*!
46 \class QOpenGLFunctions_ES2
47 \inmodule QtGui
48 \since 5.1
49 \wrapper
50 \brief The QOpenGLFunctions_ES2 class provides all functions for OpenGL ES 2.
51
52 This class is a wrapper for OpenGL ES 2 functions. See reference pages on
53 \l {http://www.khronos.org/opengles/sdk/docs/man/}{khronos.org} for
54 function documentation.
55
56 \sa QAbstractOpenGLFunctions
57*/
58
59QOpenGLFunctions_ES2::QOpenGLFunctions_ES2()
60 : QAbstractOpenGLFunctions()
61 , d_es2(0)
62{
63}
64
65QOpenGLFunctions_ES2::~QOpenGLFunctions_ES2()
66{
67}
68
69bool QOpenGLFunctions_ES2::initializeOpenGLFunctions()
70{
71 if ( isInitialized() )
72 return true;
73
74 QOpenGLContext* context = QOpenGLContext::currentContext();
75
76 // If owned by a context object make sure it is current.
77 // Also check that current context is compatible
78 if (((owningContext() && owningContext() == context) || !owningContext())
79 && QOpenGLFunctions_ES2::isContextCompatible(context))
80 {
81 // Nothing to do, just flag that we are initialized
82 QAbstractOpenGLFunctions::initializeOpenGLFunctions();
83 }
84 return isInitialized();
85}
86
87bool QOpenGLFunctions_ES2::isContextCompatible(QOpenGLContext *context)
88{
89 Q_ASSERT(context);
90 QSurfaceFormat f = context->format();
91 const QPair<int, int> v = qMakePair(f.majorVersion(), f.minorVersion());
92 if (v < qMakePair(2, 0))
93 return false;
94 if (f.renderableType() != QSurfaceFormat::OpenGLES)
95 return false;
96
97 return true;
98}
99
100QOpenGLVersionProfile QOpenGLFunctions_ES2::versionProfile()
101{
102 QOpenGLVersionProfile v;
103 return v;
104}
105
106QT_END_NAMESPACE
107

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