| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only |
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| 3 | |
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| 4 | // |
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| 5 | // W A R N I N G |
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| 6 | // ------------- |
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| 7 | // |
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| 8 | // This file is not part of the QtDataVisualization API. It exists purely as an |
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| 9 | // implementation detail. This header file may change from version to |
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| 10 | // version without notice, or even be removed. |
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| 11 | // |
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| 12 | // We mean it. |
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| 13 | |
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| 14 | #ifndef TEXTUREHELPER_P_H |
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| 15 | #define TEXTUREHELPER_P_H |
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| 16 | |
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| 17 | #include "datavisualizationglobal_p.h" |
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| 18 | #include <QtGui/QRgb> |
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| 19 | #include <QtGui/QLinearGradient> |
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| 20 | #if !QT_CONFIG(opengles2) |
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| 21 | // 3D Textures are not supported by ES set |
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| 22 | # include <QtOpenGL/QOpenGLFunctions_2_1> |
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| 23 | #endif |
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| 24 | |
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| 25 | QT_BEGIN_NAMESPACE |
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| 26 | |
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| 27 | class TextureHelper : protected QOpenGLFunctions |
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| 28 | { |
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| 29 | public: |
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| 30 | TextureHelper(); |
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| 31 | ~TextureHelper(); |
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| 32 | |
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| 33 | // Ownership of created texture is transferred to caller |
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| 34 | GLuint create2DTexture(const QImage &image, bool useTrilinearFiltering = false, |
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| 35 | bool convert = true, bool smoothScale = true, bool clampY = false); |
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| 36 | GLuint create3DTexture(const QList<uchar> *data, int width, int height, int depth, |
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| 37 | QImage::Format dataFormat); |
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| 38 | GLuint createCubeMapTexture(const QImage &image, bool useTrilinearFiltering = false); |
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| 39 | // Returns selection texture and inserts generated framebuffers to framebuffer parameters |
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| 40 | GLuint createSelectionTexture(const QSize &size, GLuint &frameBuffer, GLuint &depthBuffer); |
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| 41 | GLuint createCursorPositionTexture(const QSize &size, GLuint &frameBuffer); |
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| 42 | GLuint createUniformTexture(const QColor &color); |
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| 43 | GLuint createGradientTexture(const QLinearGradient &gradient); |
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| 44 | GLuint createDepthTexture(const QSize &size, GLuint textureSize); |
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| 45 | // Returns depth texture and inserts generated framebuffer to parameter |
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| 46 | GLuint createDepthTextureFrameBuffer(const QSize &size, GLuint &frameBuffer, GLuint textureSize); |
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| 47 | void deleteTexture(GLuint *texture); |
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| 48 | |
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| 49 | private: |
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| 50 | QImage convertToGLFormat(const QImage &srcImage); |
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| 51 | void convertToGLFormatHelper(QImage &dstImage, const QImage &srcImage, GLenum texture_format); |
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| 52 | QRgb qt_gl_convertToGLFormatHelper(QRgb src_pixel, GLenum texture_format); |
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| 53 | |
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| 54 | #if !QT_CONFIG(opengles2) |
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| 55 | QOpenGLFunctions_2_1 *m_openGlFunctions_2_1 = nullptr; |
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| 56 | #endif |
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| 57 | friend class Bars3DRenderer; |
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| 58 | friend class Surface3DRenderer; |
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| 59 | friend class Scatter3DRenderer; |
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| 60 | friend class Abstract3DRenderer; |
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| 61 | }; |
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| 62 | |
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| 63 | QT_END_NAMESPACE |
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| 64 | |
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| 65 | #endif |
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| 66 | |
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