1 // Created by: Kirill GAVRILOV
2 // Copyright (c) 2013-2014 OPEN CASCADE SAS
4 // This file is part of Open CASCADE Technology software library.
6 // This library is free software; you can redistribute it and/or modify it under
7 // the terms of the GNU Lesser General Public License version 2.1 as published
8 // by the Free Software Foundation, with special exception defined in the file
9 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
10 // distribution for complete text of the license and disclaimer of any warranty.
12 // Alternatively, this file may be used under the terms of Open CASCADE
13 // commercial license or contractual agreement.
15 #ifndef _OpenGl_PointSprite_H__
16 #define _OpenGl_PointSprite_H__
18 #include <OpenGl_Texture.hxx>
20 class OpenGl_PointSprite;
21 DEFINE_STANDARD_HANDLE(OpenGl_PointSprite, OpenGl_Texture)
23 //! Point sprite resource. On modern hardware it will be texture with extra parameters.
24 //! On ancient hardware sprites will be drawn using bitmaps.
25 class OpenGl_PointSprite : public OpenGl_Texture
27 DEFINE_STANDARD_RTTIEXT(OpenGl_PointSprite, OpenGl_Texture)
30 //! Create uninitialized resource.
31 Standard_EXPORT OpenGl_PointSprite (const TCollection_AsciiString& theResourceId);
34 Standard_EXPORT virtual ~OpenGl_PointSprite();
36 //! Destroy object - will release GPU memory if any.
37 Standard_EXPORT virtual void Release (OpenGl_Context* theCtx) Standard_OVERRIDE;
39 //! Returns TRUE for point sprite texture.
40 virtual bool IsPointSprite() const Standard_OVERRIDE { return true; }
42 //! @return true if current object was initialized
43 virtual bool IsValid() const Standard_OVERRIDE
45 return myBitmapList != 0
46 || myTextureId != NO_TEXTURE;
49 //! @return true if this is display list bitmap
50 inline Standard_Boolean IsDisplayList() const
52 return myBitmapList != 0;
55 //! Draw sprite using glBitmap.
56 //! Please call glRasterPos3fv() before to setup sprite position.
57 Standard_EXPORT void DrawBitmap (const Handle(OpenGl_Context)& theCtx) const;
59 //! Initialize point sprite as display list
60 Standard_EXPORT void SetDisplayList (const Handle(OpenGl_Context)& theCtx,
61 const GLuint theBitmapList);
65 GLuint myBitmapList; //!< if of display list to draw sprite using glBitmap (for backward compatibility)
69 #endif // _OpenGl_PointSprite_H__