| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
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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 QOPENGLTEXTUREBLITTER_H |
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| 5 | #define QOPENGLTEXTUREBLITTER_H |
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| 6 | |
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| 7 | #include <QtOpenGL/qtopenglglobal.h> |
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| 8 | |
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| 9 | #include <QtGui/qopengl.h> |
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| 10 | #include <QtGui/QMatrix3x3> |
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| 11 | #include <QtGui/QMatrix4x4> |
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| 12 | |
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| 13 | QT_BEGIN_NAMESPACE |
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| 14 | |
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| 15 | class QOpenGLTextureBlitterPrivate; |
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| 16 | |
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| 17 | class Q_OPENGL_EXPORT QOpenGLTextureBlitter |
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| 18 | { |
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| 19 | public: |
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| 20 | QOpenGLTextureBlitter(); |
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| 21 | ~QOpenGLTextureBlitter(); |
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| 22 | |
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| 23 | enum Origin { |
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| 24 | OriginBottomLeft, |
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| 25 | OriginTopLeft |
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| 26 | }; |
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| 27 | |
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| 28 | bool create(); |
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| 29 | bool isCreated() const; |
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| 30 | void destroy(); |
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| 31 | |
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| 32 | bool supportsExternalOESTarget() const; |
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| 33 | bool supportsRectangleTarget() const; |
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| 34 | |
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| 35 | void bind(GLenum target = GL_TEXTURE_2D); |
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| 36 | void release(); |
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| 37 | |
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| 38 | void setRedBlueSwizzle(bool swizzle); |
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| 39 | void setOpacity(float opacity); |
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| 40 | |
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| 41 | void blit(GLuint texture, const QMatrix4x4 &targetTransform, Origin sourceOrigin); |
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| 42 | void blit(GLuint texture, const QMatrix4x4 &targetTransform, const QMatrix3x3 &sourceTransform); |
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| 43 | |
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| 44 | static QMatrix4x4 targetTransform(const QRectF &target, const QRect &viewport); |
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| 45 | static QMatrix3x3 sourceTransform(const QRectF &subTexture, const QSize &textureSize, Origin origin); |
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| 46 | |
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| 47 | private: |
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| 48 | Q_DISABLE_COPY(QOpenGLTextureBlitter) |
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| 49 | Q_DECLARE_PRIVATE(QOpenGLTextureBlitter) |
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| 50 | QScopedPointer<QOpenGLTextureBlitterPrivate> d_ptr; |
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| 51 | }; |
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| 52 | |
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| 53 | QT_END_NAMESPACE |
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| 54 | |
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| 55 | #endif //QOPENGLTEXTUREBLITTER_H |
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| 56 | |
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