| 1 | // Copyright (C) 2020 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Sean Harmer <sean.harmer@kdab.com> |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | |
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| 4 | #ifndef QOPENGLVERTEXARRAYOBJECT_P_H |
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| 5 | #define QOPENGLVERTEXARRAYOBJECT_P_H |
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| 6 | |
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| 7 | // |
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| 8 | // W A R N I N G |
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| 9 | // ------------- |
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| 10 | // |
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| 11 | // This file is not part of the Qt API. It exists for the convenience |
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| 12 | // of the Qt OpenGL classes. This header file may change from |
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| 13 | // version to version without notice, or even be removed. |
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| 14 | // |
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| 15 | // We mean it. |
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| 16 | // |
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| 17 | |
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| 18 | #include <QtOpenGL/qtopenglglobal.h> |
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| 19 | |
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| 20 | #include <QtGui/qopengl.h> |
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| 21 | #include <QtCore/private/qglobal_p.h> |
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| 22 | |
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| 23 | QT_BEGIN_NAMESPACE |
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| 24 | |
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| 25 | class QOpenGLContext; |
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| 26 | |
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| 27 | class QOpenGLVertexArrayObjectHelper |
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| 28 | { |
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| 29 | Q_DISABLE_COPY(QOpenGLVertexArrayObjectHelper) |
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| 30 | |
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| 31 | private: |
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| 32 | explicit inline QOpenGLVertexArrayObjectHelper(QOpenGLContext *context) |
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| 33 | : GenVertexArrays(nullptr) |
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| 34 | , DeleteVertexArrays(nullptr) |
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| 35 | , BindVertexArray(nullptr) |
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| 36 | , IsVertexArray(nullptr) |
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| 37 | { |
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| 38 | initializeFromContext(context); |
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| 39 | } |
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| 40 | |
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| 41 | void Q_OPENGL_EXPORT initializeFromContext(QOpenGLContext *context); |
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| 42 | |
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| 43 | public: |
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| 44 | static Q_OPENGL_EXPORT QOpenGLVertexArrayObjectHelper *vertexArrayObjectHelperForContext(QOpenGLContext *context); |
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| 45 | |
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| 46 | inline bool isValid() const |
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| 47 | { |
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| 48 | return GenVertexArrays && DeleteVertexArrays && BindVertexArray && IsVertexArray; |
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| 49 | } |
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| 50 | |
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| 51 | inline void glGenVertexArrays(GLsizei n, GLuint *arrays) const |
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| 52 | { |
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| 53 | GenVertexArrays(n, arrays); |
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| 54 | } |
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| 55 | |
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| 56 | inline void glDeleteVertexArrays(GLsizei n, const GLuint *arrays) const |
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| 57 | { |
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| 58 | DeleteVertexArrays(n, arrays); |
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| 59 | } |
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| 60 | |
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| 61 | inline void glBindVertexArray(GLuint array) const |
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| 62 | { |
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| 63 | BindVertexArray(array); |
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| 64 | } |
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| 65 | |
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| 66 | inline GLboolean glIsVertexArray(GLuint array) const |
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| 67 | { |
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| 68 | return IsVertexArray(array); |
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| 69 | } |
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| 70 | |
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| 71 | // Function signatures are equivalent between desktop core, ARB, APPLE, ES 3 and ES 2 extensions |
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| 72 | typedef void (QOPENGLF_APIENTRYP qt_GenVertexArrays_t)(GLsizei n, GLuint *arrays); |
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| 73 | typedef void (QOPENGLF_APIENTRYP qt_DeleteVertexArrays_t)(GLsizei n, const GLuint *arrays); |
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| 74 | typedef void (QOPENGLF_APIENTRYP qt_BindVertexArray_t)(GLuint array); |
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| 75 | typedef GLboolean (QOPENGLF_APIENTRYP qt_IsVertexArray_t)(GLuint array); |
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| 76 | |
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| 77 | qt_GenVertexArrays_t GenVertexArrays; |
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| 78 | qt_DeleteVertexArrays_t DeleteVertexArrays; |
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| 79 | qt_BindVertexArray_t BindVertexArray; |
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| 80 | qt_IsVertexArray_t IsVertexArray; |
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| 81 | }; |
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| 82 | |
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| 83 | QT_END_NAMESPACE |
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| 84 | |
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| 85 | #endif // QOPENGLVERTEXARRAYOBJECT_P_H |
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| 86 | |
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