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