1 | /**************************************************************************** |
2 | ** |
3 | ** Copyright (C) 2016 The Qt Company Ltd. |
4 | ** Contact: https://www.qt.io/licensing/ |
5 | ** |
6 | ** This file is part of the Qt Data Visualization module of the Qt Toolkit. |
7 | ** |
8 | ** $QT_BEGIN_LICENSE:GPL$ |
9 | ** Commercial License Usage |
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17 | ** GNU General Public License Usage |
18 | ** Alternatively, this file may be used under the terms of the GNU |
19 | ** General Public License version 3 or (at your option) any later version |
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28 | ****************************************************************************/ |
29 | |
30 | // |
31 | // W A R N I N G |
32 | // ------------- |
33 | // |
34 | // This file is not part of the QtDataVisualization API. It exists purely as an |
35 | // implementation detail. This header file may change from version to |
36 | // version without notice, or even be removed. |
37 | // |
38 | // We mean it. |
39 | |
40 | #ifndef TEXTUREHELPER_P_H |
41 | #define TEXTUREHELPER_P_H |
42 | |
43 | #include "datavisualizationglobal_p.h" |
44 | #include <QtGui/QRgb> |
45 | #include <QtGui/QLinearGradient> |
46 | #if !defined(QT_OPENGL_ES_2) |
47 | // 3D Textures are not supported by ES set |
48 | # include <QtGui/QOpenGLFunctions_2_1> |
49 | #endif |
50 | |
51 | QT_BEGIN_NAMESPACE_DATAVISUALIZATION |
52 | |
53 | class TextureHelper : protected QOpenGLFunctions |
54 | { |
55 | public: |
56 | TextureHelper(); |
57 | ~TextureHelper(); |
58 | |
59 | // Ownership of created texture is transferred to caller |
60 | GLuint create2DTexture(const QImage &image, bool useTrilinearFiltering = false, |
61 | bool convert = true, bool smoothScale = true, bool clampY = false); |
62 | GLuint create3DTexture(const QVector<uchar> *data, int width, int height, int depth, |
63 | QImage::Format dataFormat); |
64 | GLuint createCubeMapTexture(const QImage &image, bool useTrilinearFiltering = false); |
65 | // Returns selection texture and inserts generated framebuffers to framebuffer parameters |
66 | GLuint createSelectionTexture(const QSize &size, GLuint &frameBuffer, GLuint &depthBuffer); |
67 | GLuint createCursorPositionTexture(const QSize &size, GLuint &frameBuffer); |
68 | GLuint createUniformTexture(const QColor &color); |
69 | GLuint createGradientTexture(const QLinearGradient &gradient); |
70 | GLuint createDepthTexture(const QSize &size, GLuint textureSize); |
71 | // Returns depth texture and inserts generated framebuffer to parameter |
72 | GLuint createDepthTextureFrameBuffer(const QSize &size, GLuint &frameBuffer, GLuint textureSize); |
73 | void deleteTexture(GLuint *texture); |
74 | |
75 | private: |
76 | QImage convertToGLFormat(const QImage &srcImage); |
77 | void convertToGLFormatHelper(QImage &dstImage, const QImage &srcImage, GLenum texture_format); |
78 | QRgb qt_gl_convertToGLFormatHelper(QRgb src_pixel, GLenum texture_format); |
79 | |
80 | #if !defined(QT_OPENGL_ES_2) |
81 | QOpenGLFunctions_2_1 *m_openGlFunctions_2_1; // Not owned |
82 | #endif |
83 | friend class Bars3DRenderer; |
84 | friend class Surface3DRenderer; |
85 | friend class Scatter3DRenderer; |
86 | friend class Abstract3DRenderer; |
87 | }; |
88 | |
89 | QT_END_NAMESPACE_DATAVISUALIZATION |
90 | |
91 | #endif |
92 | |