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39
40#ifndef QOPENGLTEXTUREBLITTER_H
41#define QOPENGLTEXTUREBLITTER_H
42
43#include <QtGui/qtguiglobal.h>
44
45#ifndef QT_NO_OPENGL
46
47#include <QtGui/qopengl.h>
48#include <QtGui/QMatrix3x3>
49#include <QtGui/QMatrix4x4>
50
51QT_BEGIN_NAMESPACE
52
53class QOpenGLTextureBlitterPrivate;
54
55class Q_GUI_EXPORT QOpenGLTextureBlitter
56{
57public:
58 QOpenGLTextureBlitter();
59 ~QOpenGLTextureBlitter();
60
61 enum Origin {
62 OriginBottomLeft,
63 OriginTopLeft
64 };
65
66 bool create();
67 bool isCreated() const;
68 void destroy();
69
70 bool supportsExternalOESTarget() const;
71
72 void bind(GLenum target = GL_TEXTURE_2D);
73 void release();
74
75 void setRedBlueSwizzle(bool swizzle);
76 void setOpacity(float opacity);
77
78 void blit(GLuint texture, const QMatrix4x4 &targetTransform, Origin sourceOrigin);
79 void blit(GLuint texture, const QMatrix4x4 &targetTransform, const QMatrix3x3 &sourceTransform);
80
81 static QMatrix4x4 targetTransform(const QRectF &target, const QRect &viewport);
82 static QMatrix3x3 sourceTransform(const QRectF &subTexture, const QSize &textureSize, Origin origin);
83
84private:
85 Q_DISABLE_COPY(QOpenGLTextureBlitter)
86 Q_DECLARE_PRIVATE(QOpenGLTextureBlitter)
87 QScopedPointer<QOpenGLTextureBlitterPrivate> d_ptr;
88};
89
90QT_END_NAMESPACE
91
92#endif
93
94#endif //QOPENGLTEXTUREBLITTER_H
95