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39 
40 #ifndef QT3DRENDER_RENDER_OPENGL_IMAGESUBMISSIONCONTEXT_P_H
41 #define QT3DRENDER_RENDER_OPENGL_IMAGESUBMISSIONCONTEXT_P_H
42 
43 //
44 //  W A R N I N G
45 //  -------------
46 //
47 // This file is not part of the Qt API.  It exists for the convenience
48 // of other Qt classes.  This header file may change from version to
49 // version without notice, or even be removed.
50 //
51 // We mean it.
52 //
53 
54 #include <Qt3DCore/QNodeId>
55 
56 QT_BEGIN_NAMESPACE
57 
58 namespace Qt3DRender {
59 namespace Render {
60 
61 class ShaderImage;
62 
63 namespace OpenGL {
64 
65 class GraphicsContext;
66 class GLTexture;
67 
68 class Q_AUTOTEST_EXPORT ImageSubmissionContext
69 {
70 public:
71     ImageSubmissionContext();
72 
73     void initialize(GraphicsContext *context);
74     void endDrawing();
75     int activateImage(ShaderImage *image, GLTexture *tex);
76     void deactivateImages();
77 
78 private:
79     void decayImageScores();
80     int assignUnitForImage(Qt3DCore::QNodeId shaderImageId);
81 
82     struct ActiveImage
83     {
84         Qt3DCore::QNodeId shaderImageId;
85         GLTexture *texture = nullptr;
86         int score = 0;
87         bool pinned = false;
88     };
89     QVector<ActiveImage> m_activeImages;
90     GraphicsContext *m_ctx;
91 };
92 
93 } // namespace OpenGL
94 } // namespace Render
95 } // namespace Qt3DRender
96 
97 QT_END_NAMESPACE
98 
99 #endif // QT3DRENDER_RENDER_OPENGL_IMAGESUBMISSIONCONTEXT_P_H
100